root / target-i386 / op_helper.c @ 35bed8ee
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/*
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* i386 helpers
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#define CPU_NO_GLOBAL_REGS
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#include "exec.h" |
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#include "exec-all.h" |
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#include "host-utils.h" |
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#include "ioport.h" |
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|
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//#define DEBUG_PCALL
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#ifdef DEBUG_PCALL
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# define LOG_PCALL(...) qemu_log_mask(CPU_LOG_PCALL, ## __VA_ARGS__) |
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# define LOG_PCALL_STATE(env) \
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log_cpu_state_mask(CPU_LOG_PCALL, (env), X86_DUMP_CCOP) |
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#else
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# define LOG_PCALL(...) do { } while (0) |
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# define LOG_PCALL_STATE(env) do { } while (0) |
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#endif
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#if 0
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#define raise_exception_err(a, b)\
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do {\
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qemu_log("raise_exception line=%d\n", __LINE__);\
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(raise_exception_err)(a, b);\
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} while (0)
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#endif
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static const uint8_t parity_table[256] = { |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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}; |
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|
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/* modulo 17 table */
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static const uint8_t rclw_table[32] = { |
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0, 1, 2, 3, 4, 5, 6, 7, |
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8, 9,10,11,12,13,14,15, |
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16, 0, 1, 2, 3, 4, 5, 6, |
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7, 8, 9,10,11,12,13,14, |
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}; |
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/* modulo 9 table */
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static const uint8_t rclb_table[32] = { |
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0, 1, 2, 3, 4, 5, 6, 7, |
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8, 0, 1, 2, 3, 4, 5, 6, |
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7, 8, 0, 1, 2, 3, 4, 5, |
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6, 7, 8, 0, 1, 2, 3, 4, |
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}; |
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static const CPU86_LDouble f15rk[7] = |
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{
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0.00000000000000000000L, |
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1.00000000000000000000L, |
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3.14159265358979323851L, /*pi*/ |
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0.30102999566398119523L, /*lg2*/ |
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0.69314718055994530943L, /*ln2*/ |
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1.44269504088896340739L, /*l2e*/ |
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3.32192809488736234781L, /*l2t*/ |
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}; |
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/* broken thread support */
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static spinlock_t global_cpu_lock = SPIN_LOCK_UNLOCKED;
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void helper_lock(void) |
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{
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spin_lock(&global_cpu_lock); |
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} |
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void helper_unlock(void) |
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{
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spin_unlock(&global_cpu_lock); |
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} |
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void helper_write_eflags(target_ulong t0, uint32_t update_mask)
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{
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load_eflags(t0, update_mask); |
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} |
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target_ulong helper_read_eflags(void)
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{
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uint32_t eflags; |
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eflags = helper_cc_compute_all(CC_OP); |
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eflags |= (DF & DF_MASK); |
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eflags |= env->eflags & ~(VM_MASK | RF_MASK); |
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return eflags;
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} |
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/* return non zero if error */
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static inline int load_segment(uint32_t *e1_ptr, uint32_t *e2_ptr, |
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int selector)
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{
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SegmentCache *dt; |
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int index;
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target_ulong ptr; |
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if (selector & 0x4) |
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dt = &env->ldt; |
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else
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dt = &env->gdt; |
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index = selector & ~7;
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if ((index + 7) > dt->limit) |
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return -1; |
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ptr = dt->base + index; |
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*e1_ptr = ldl_kernel(ptr); |
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*e2_ptr = ldl_kernel(ptr + 4);
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return 0; |
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} |
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static inline unsigned int get_seg_limit(uint32_t e1, uint32_t e2) |
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{
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unsigned int limit; |
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limit = (e1 & 0xffff) | (e2 & 0x000f0000); |
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if (e2 & DESC_G_MASK)
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limit = (limit << 12) | 0xfff; |
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return limit;
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} |
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static inline uint32_t get_seg_base(uint32_t e1, uint32_t e2) |
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{
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return ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000)); |
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} |
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static inline void load_seg_cache_raw_dt(SegmentCache *sc, uint32_t e1, uint32_t e2) |
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{
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sc->base = get_seg_base(e1, e2); |
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sc->limit = get_seg_limit(e1, e2); |
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sc->flags = e2; |
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} |
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/* init the segment cache in vm86 mode. */
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static inline void load_seg_vm(int seg, int selector) |
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{
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selector &= 0xffff;
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cpu_x86_load_seg_cache(env, seg, selector, |
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(selector << 4), 0xffff, 0); |
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} |
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static inline void get_ss_esp_from_tss(uint32_t *ss_ptr, |
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uint32_t *esp_ptr, int dpl)
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{
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int type, index, shift;
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#if 0
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{
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int i;
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printf("TR: base=%p limit=%x\n", env->tr.base, env->tr.limit);
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for(i=0;i<env->tr.limit;i++) {
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printf("%02x ", env->tr.base[i]);
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if ((i & 7) == 7) printf("\n");
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}
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printf("\n");
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}
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#endif
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if (!(env->tr.flags & DESC_P_MASK))
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cpu_abort(env, "invalid tss");
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type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
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if ((type & 7) != 1) |
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cpu_abort(env, "invalid tss type");
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shift = type >> 3;
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index = (dpl * 4 + 2) << shift; |
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if (index + (4 << shift) - 1 > env->tr.limit) |
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raise_exception_err(EXCP0A_TSS, env->tr.selector & 0xfffc);
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if (shift == 0) { |
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*esp_ptr = lduw_kernel(env->tr.base + index); |
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*ss_ptr = lduw_kernel(env->tr.base + index + 2);
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} else {
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*esp_ptr = ldl_kernel(env->tr.base + index); |
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*ss_ptr = lduw_kernel(env->tr.base + index + 4);
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} |
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} |
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/* XXX: merge with load_seg() */
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static void tss_load_seg(int seg_reg, int selector) |
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{
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uint32_t e1, e2; |
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int rpl, dpl, cpl;
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if ((selector & 0xfffc) != 0) { |
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if (load_segment(&e1, &e2, selector) != 0) |
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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if (!(e2 & DESC_S_MASK))
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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rpl = selector & 3;
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dpl = (e2 >> DESC_DPL_SHIFT) & 3;
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cpl = env->hflags & HF_CPL_MASK; |
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if (seg_reg == R_CS) {
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if (!(e2 & DESC_CS_MASK))
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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/* XXX: is it correct ? */
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if (dpl != rpl)
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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if ((e2 & DESC_C_MASK) && dpl > rpl)
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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} else if (seg_reg == R_SS) { |
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/* SS must be writable data */
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if ((e2 & DESC_CS_MASK) || !(e2 & DESC_W_MASK))
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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if (dpl != cpl || dpl != rpl)
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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} else {
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/* not readable code */
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if ((e2 & DESC_CS_MASK) && !(e2 & DESC_R_MASK))
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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/* if data or non conforming code, checks the rights */
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if (((e2 >> DESC_TYPE_SHIFT) & 0xf) < 12) { |
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if (dpl < cpl || dpl < rpl)
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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} |
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} |
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if (!(e2 & DESC_P_MASK))
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raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
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cpu_x86_load_seg_cache(env, seg_reg, selector, |
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get_seg_base(e1, e2), |
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get_seg_limit(e1, e2), |
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e2); |
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} else {
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if (seg_reg == R_SS || seg_reg == R_CS)
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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} |
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} |
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|
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#define SWITCH_TSS_JMP 0 |
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#define SWITCH_TSS_IRET 1 |
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#define SWITCH_TSS_CALL 2 |
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|
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/* XXX: restore CPU state in registers (PowerPC case) */
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static void switch_tss(int tss_selector, |
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uint32_t e1, uint32_t e2, int source,
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uint32_t next_eip) |
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{
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int tss_limit, tss_limit_max, type, old_tss_limit_max, old_type, v1, v2, i;
|
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target_ulong tss_base; |
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uint32_t new_regs[8], new_segs[6]; |
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uint32_t new_eflags, new_eip, new_cr3, new_ldt, new_trap; |
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uint32_t old_eflags, eflags_mask; |
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SegmentCache *dt; |
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int index;
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target_ulong ptr; |
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|
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type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
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LOG_PCALL("switch_tss: sel=0x%04x type=%d src=%d\n", tss_selector, type, source);
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|
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/* if task gate, we read the TSS segment and we load it */
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if (type == 5) { |
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if (!(e2 & DESC_P_MASK))
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raise_exception_err(EXCP0B_NOSEG, tss_selector & 0xfffc);
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tss_selector = e1 >> 16;
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if (tss_selector & 4) |
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raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
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if (load_segment(&e1, &e2, tss_selector) != 0) |
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raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
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if (e2 & DESC_S_MASK)
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raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
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type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
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if ((type & 7) != 1) |
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raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
|
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} |
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|
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if (!(e2 & DESC_P_MASK))
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raise_exception_err(EXCP0B_NOSEG, tss_selector & 0xfffc);
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|
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if (type & 8) |
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tss_limit_max = 103;
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else
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tss_limit_max = 43;
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tss_limit = get_seg_limit(e1, e2); |
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tss_base = get_seg_base(e1, e2); |
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if ((tss_selector & 4) != 0 || |
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tss_limit < tss_limit_max) |
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raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
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old_type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
|
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if (old_type & 8) |
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old_tss_limit_max = 103;
|
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else
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old_tss_limit_max = 43;
|
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|
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/* read all the registers from the new TSS */
|
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if (type & 8) { |
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/* 32 bit */
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new_cr3 = ldl_kernel(tss_base + 0x1c);
|
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new_eip = ldl_kernel(tss_base + 0x20);
|
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new_eflags = ldl_kernel(tss_base + 0x24);
|
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for(i = 0; i < 8; i++) |
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new_regs[i] = ldl_kernel(tss_base + (0x28 + i * 4)); |
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for(i = 0; i < 6; i++) |
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new_segs[i] = lduw_kernel(tss_base + (0x48 + i * 4)); |
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new_ldt = lduw_kernel(tss_base + 0x60);
|
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new_trap = ldl_kernel(tss_base + 0x64);
|
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} else {
|
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/* 16 bit */
|
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new_cr3 = 0;
|
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new_eip = lduw_kernel(tss_base + 0x0e);
|
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new_eflags = lduw_kernel(tss_base + 0x10);
|
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for(i = 0; i < 8; i++) |
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new_regs[i] = lduw_kernel(tss_base + (0x12 + i * 2)) | 0xffff0000; |
| 345 |
for(i = 0; i < 4; i++) |
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new_segs[i] = lduw_kernel(tss_base + (0x22 + i * 4)); |
| 347 |
new_ldt = lduw_kernel(tss_base + 0x2a);
|
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new_segs[R_FS] = 0;
|
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new_segs[R_GS] = 0;
|
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new_trap = 0;
|
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} |
| 352 |
|
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/* NOTE: we must avoid memory exceptions during the task switch,
|
| 354 |
so we make dummy accesses before */
|
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/* XXX: it can still fail in some cases, so a bigger hack is
|
| 356 |
necessary to valid the TLB after having done the accesses */
|
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|
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v1 = ldub_kernel(env->tr.base); |
| 359 |
v2 = ldub_kernel(env->tr.base + old_tss_limit_max); |
| 360 |
stb_kernel(env->tr.base, v1); |
| 361 |
stb_kernel(env->tr.base + old_tss_limit_max, v2); |
| 362 |
|
| 363 |
/* clear busy bit (it is restartable) */
|
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if (source == SWITCH_TSS_JMP || source == SWITCH_TSS_IRET) {
|
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target_ulong ptr; |
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uint32_t e2; |
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ptr = env->gdt.base + (env->tr.selector & ~7);
|
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e2 = ldl_kernel(ptr + 4);
|
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e2 &= ~DESC_TSS_BUSY_MASK; |
| 370 |
stl_kernel(ptr + 4, e2);
|
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} |
| 372 |
old_eflags = compute_eflags(); |
| 373 |
if (source == SWITCH_TSS_IRET)
|
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old_eflags &= ~NT_MASK; |
| 375 |
|
| 376 |
/* save the current state in the old TSS */
|
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if (type & 8) { |
| 378 |
/* 32 bit */
|
| 379 |
stl_kernel(env->tr.base + 0x20, next_eip);
|
| 380 |
stl_kernel(env->tr.base + 0x24, old_eflags);
|
| 381 |
stl_kernel(env->tr.base + (0x28 + 0 * 4), EAX); |
| 382 |
stl_kernel(env->tr.base + (0x28 + 1 * 4), ECX); |
| 383 |
stl_kernel(env->tr.base + (0x28 + 2 * 4), EDX); |
| 384 |
stl_kernel(env->tr.base + (0x28 + 3 * 4), EBX); |
| 385 |
stl_kernel(env->tr.base + (0x28 + 4 * 4), ESP); |
| 386 |
stl_kernel(env->tr.base + (0x28 + 5 * 4), EBP); |
| 387 |
stl_kernel(env->tr.base + (0x28 + 6 * 4), ESI); |
| 388 |
stl_kernel(env->tr.base + (0x28 + 7 * 4), EDI); |
| 389 |
for(i = 0; i < 6; i++) |
| 390 |
stw_kernel(env->tr.base + (0x48 + i * 4), env->segs[i].selector); |
| 391 |
} else {
|
| 392 |
/* 16 bit */
|
| 393 |
stw_kernel(env->tr.base + 0x0e, next_eip);
|
| 394 |
stw_kernel(env->tr.base + 0x10, old_eflags);
|
| 395 |
stw_kernel(env->tr.base + (0x12 + 0 * 2), EAX); |
| 396 |
stw_kernel(env->tr.base + (0x12 + 1 * 2), ECX); |
| 397 |
stw_kernel(env->tr.base + (0x12 + 2 * 2), EDX); |
| 398 |
stw_kernel(env->tr.base + (0x12 + 3 * 2), EBX); |
| 399 |
stw_kernel(env->tr.base + (0x12 + 4 * 2), ESP); |
| 400 |
stw_kernel(env->tr.base + (0x12 + 5 * 2), EBP); |
| 401 |
stw_kernel(env->tr.base + (0x12 + 6 * 2), ESI); |
| 402 |
stw_kernel(env->tr.base + (0x12 + 7 * 2), EDI); |
| 403 |
for(i = 0; i < 4; i++) |
| 404 |
stw_kernel(env->tr.base + (0x22 + i * 4), env->segs[i].selector); |
| 405 |
} |
| 406 |
|
| 407 |
/* now if an exception occurs, it will occurs in the next task
|
| 408 |
context */
|
| 409 |
|
| 410 |
if (source == SWITCH_TSS_CALL) {
|
| 411 |
stw_kernel(tss_base, env->tr.selector); |
| 412 |
new_eflags |= NT_MASK; |
| 413 |
} |
| 414 |
|
| 415 |
/* set busy bit */
|
| 416 |
if (source == SWITCH_TSS_JMP || source == SWITCH_TSS_CALL) {
|
| 417 |
target_ulong ptr; |
| 418 |
uint32_t e2; |
| 419 |
ptr = env->gdt.base + (tss_selector & ~7);
|
| 420 |
e2 = ldl_kernel(ptr + 4);
|
| 421 |
e2 |= DESC_TSS_BUSY_MASK; |
| 422 |
stl_kernel(ptr + 4, e2);
|
| 423 |
} |
| 424 |
|
| 425 |
/* set the new CPU state */
|
| 426 |
/* from this point, any exception which occurs can give problems */
|
| 427 |
env->cr[0] |= CR0_TS_MASK;
|
| 428 |
env->hflags |= HF_TS_MASK; |
| 429 |
env->tr.selector = tss_selector; |
| 430 |
env->tr.base = tss_base; |
| 431 |
env->tr.limit = tss_limit; |
| 432 |
env->tr.flags = e2 & ~DESC_TSS_BUSY_MASK; |
| 433 |
|
| 434 |
if ((type & 8) && (env->cr[0] & CR0_PG_MASK)) { |
| 435 |
cpu_x86_update_cr3(env, new_cr3); |
| 436 |
} |
| 437 |
|
| 438 |
/* load all registers without an exception, then reload them with
|
| 439 |
possible exception */
|
| 440 |
env->eip = new_eip; |
| 441 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | |
| 442 |
IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK; |
| 443 |
if (!(type & 8)) |
| 444 |
eflags_mask &= 0xffff;
|
| 445 |
load_eflags(new_eflags, eflags_mask); |
| 446 |
/* XXX: what to do in 16 bit case ? */
|
| 447 |
EAX = new_regs[0];
|
| 448 |
ECX = new_regs[1];
|
| 449 |
EDX = new_regs[2];
|
| 450 |
EBX = new_regs[3];
|
| 451 |
ESP = new_regs[4];
|
| 452 |
EBP = new_regs[5];
|
| 453 |
ESI = new_regs[6];
|
| 454 |
EDI = new_regs[7];
|
| 455 |
if (new_eflags & VM_MASK) {
|
| 456 |
for(i = 0; i < 6; i++) |
| 457 |
load_seg_vm(i, new_segs[i]); |
| 458 |
/* in vm86, CPL is always 3 */
|
| 459 |
cpu_x86_set_cpl(env, 3);
|
| 460 |
} else {
|
| 461 |
/* CPL is set the RPL of CS */
|
| 462 |
cpu_x86_set_cpl(env, new_segs[R_CS] & 3);
|
| 463 |
/* first just selectors as the rest may trigger exceptions */
|
| 464 |
for(i = 0; i < 6; i++) |
| 465 |
cpu_x86_load_seg_cache(env, i, new_segs[i], 0, 0, 0); |
| 466 |
} |
| 467 |
|
| 468 |
env->ldt.selector = new_ldt & ~4;
|
| 469 |
env->ldt.base = 0;
|
| 470 |
env->ldt.limit = 0;
|
| 471 |
env->ldt.flags = 0;
|
| 472 |
|
| 473 |
/* load the LDT */
|
| 474 |
if (new_ldt & 4) |
| 475 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
| 476 |
|
| 477 |
if ((new_ldt & 0xfffc) != 0) { |
| 478 |
dt = &env->gdt; |
| 479 |
index = new_ldt & ~7;
|
| 480 |
if ((index + 7) > dt->limit) |
| 481 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
| 482 |
ptr = dt->base + index; |
| 483 |
e1 = ldl_kernel(ptr); |
| 484 |
e2 = ldl_kernel(ptr + 4);
|
| 485 |
if ((e2 & DESC_S_MASK) || ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2) |
| 486 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
| 487 |
if (!(e2 & DESC_P_MASK))
|
| 488 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
| 489 |
load_seg_cache_raw_dt(&env->ldt, e1, e2); |
| 490 |
} |
| 491 |
|
| 492 |
/* load the segments */
|
| 493 |
if (!(new_eflags & VM_MASK)) {
|
| 494 |
tss_load_seg(R_CS, new_segs[R_CS]); |
| 495 |
tss_load_seg(R_SS, new_segs[R_SS]); |
| 496 |
tss_load_seg(R_ES, new_segs[R_ES]); |
| 497 |
tss_load_seg(R_DS, new_segs[R_DS]); |
| 498 |
tss_load_seg(R_FS, new_segs[R_FS]); |
| 499 |
tss_load_seg(R_GS, new_segs[R_GS]); |
| 500 |
} |
| 501 |
|
| 502 |
/* check that EIP is in the CS segment limits */
|
| 503 |
if (new_eip > env->segs[R_CS].limit) {
|
| 504 |
/* XXX: different exception if CALL ? */
|
| 505 |
raise_exception_err(EXCP0D_GPF, 0);
|
| 506 |
} |
| 507 |
|
| 508 |
#ifndef CONFIG_USER_ONLY
|
| 509 |
/* reset local breakpoints */
|
| 510 |
if (env->dr[7] & 0x55) { |
| 511 |
for (i = 0; i < 4; i++) { |
| 512 |
if (hw_breakpoint_enabled(env->dr[7], i) == 0x1) |
| 513 |
hw_breakpoint_remove(env, i); |
| 514 |
} |
| 515 |
env->dr[7] &= ~0x55; |
| 516 |
} |
| 517 |
#endif
|
| 518 |
} |
| 519 |
|
| 520 |
/* check if Port I/O is allowed in TSS */
|
| 521 |
static inline void check_io(int addr, int size) |
| 522 |
{
|
| 523 |
int io_offset, val, mask;
|
| 524 |
|
| 525 |
/* TSS must be a valid 32 bit one */
|
| 526 |
if (!(env->tr.flags & DESC_P_MASK) ||
|
| 527 |
((env->tr.flags >> DESC_TYPE_SHIFT) & 0xf) != 9 || |
| 528 |
env->tr.limit < 103)
|
| 529 |
goto fail;
|
| 530 |
io_offset = lduw_kernel(env->tr.base + 0x66);
|
| 531 |
io_offset += (addr >> 3);
|
| 532 |
/* Note: the check needs two bytes */
|
| 533 |
if ((io_offset + 1) > env->tr.limit) |
| 534 |
goto fail;
|
| 535 |
val = lduw_kernel(env->tr.base + io_offset); |
| 536 |
val >>= (addr & 7);
|
| 537 |
mask = (1 << size) - 1; |
| 538 |
/* all bits must be zero to allow the I/O */
|
| 539 |
if ((val & mask) != 0) { |
| 540 |
fail:
|
| 541 |
raise_exception_err(EXCP0D_GPF, 0);
|
| 542 |
} |
| 543 |
} |
| 544 |
|
| 545 |
void helper_check_iob(uint32_t t0)
|
| 546 |
{
|
| 547 |
check_io(t0, 1);
|
| 548 |
} |
| 549 |
|
| 550 |
void helper_check_iow(uint32_t t0)
|
| 551 |
{
|
| 552 |
check_io(t0, 2);
|
| 553 |
} |
| 554 |
|
| 555 |
void helper_check_iol(uint32_t t0)
|
| 556 |
{
|
| 557 |
check_io(t0, 4);
|
| 558 |
} |
| 559 |
|
| 560 |
void helper_outb(uint32_t port, uint32_t data)
|
| 561 |
{
|
| 562 |
cpu_outb(port, data & 0xff);
|
| 563 |
} |
| 564 |
|
| 565 |
target_ulong helper_inb(uint32_t port) |
| 566 |
{
|
| 567 |
return cpu_inb(port);
|
| 568 |
} |
| 569 |
|
| 570 |
void helper_outw(uint32_t port, uint32_t data)
|
| 571 |
{
|
| 572 |
cpu_outw(port, data & 0xffff);
|
| 573 |
} |
| 574 |
|
| 575 |
target_ulong helper_inw(uint32_t port) |
| 576 |
{
|
| 577 |
return cpu_inw(port);
|
| 578 |
} |
| 579 |
|
| 580 |
void helper_outl(uint32_t port, uint32_t data)
|
| 581 |
{
|
| 582 |
cpu_outl(port, data); |
| 583 |
} |
| 584 |
|
| 585 |
target_ulong helper_inl(uint32_t port) |
| 586 |
{
|
| 587 |
return cpu_inl(port);
|
| 588 |
} |
| 589 |
|
| 590 |
static inline unsigned int get_sp_mask(unsigned int e2) |
| 591 |
{
|
| 592 |
if (e2 & DESC_B_MASK)
|
| 593 |
return 0xffffffff; |
| 594 |
else
|
| 595 |
return 0xffff; |
| 596 |
} |
| 597 |
|
| 598 |
static int exeption_has_error_code(int intno) |
| 599 |
{
|
| 600 |
switch(intno) {
|
| 601 |
case 8: |
| 602 |
case 10: |
| 603 |
case 11: |
| 604 |
case 12: |
| 605 |
case 13: |
| 606 |
case 14: |
| 607 |
case 17: |
| 608 |
return 1; |
| 609 |
} |
| 610 |
return 0; |
| 611 |
} |
| 612 |
|
| 613 |
#ifdef TARGET_X86_64
|
| 614 |
#define SET_ESP(val, sp_mask)\
|
| 615 |
do {\
|
| 616 |
if ((sp_mask) == 0xffff)\ |
| 617 |
ESP = (ESP & ~0xffff) | ((val) & 0xffff);\ |
| 618 |
else if ((sp_mask) == 0xffffffffLL)\ |
| 619 |
ESP = (uint32_t)(val);\ |
| 620 |
else\
|
| 621 |
ESP = (val);\ |
| 622 |
} while (0) |
| 623 |
#else
|
| 624 |
#define SET_ESP(val, sp_mask) ESP = (ESP & ~(sp_mask)) | ((val) & (sp_mask))
|
| 625 |
#endif
|
| 626 |
|
| 627 |
/* in 64-bit machines, this can overflow. So this segment addition macro
|
| 628 |
* can be used to trim the value to 32-bit whenever needed */
|
| 629 |
#define SEG_ADDL(ssp, sp, sp_mask) ((uint32_t)((ssp) + (sp & (sp_mask))))
|
| 630 |
|
| 631 |
/* XXX: add a is_user flag to have proper security support */
|
| 632 |
#define PUSHW(ssp, sp, sp_mask, val)\
|
| 633 |
{\
|
| 634 |
sp -= 2;\
|
| 635 |
stw_kernel((ssp) + (sp & (sp_mask)), (val));\ |
| 636 |
} |
| 637 |
|
| 638 |
#define PUSHL(ssp, sp, sp_mask, val)\
|
| 639 |
{\
|
| 640 |
sp -= 4;\
|
| 641 |
stl_kernel(SEG_ADDL(ssp, sp, sp_mask), (uint32_t)(val));\ |
| 642 |
} |
| 643 |
|
| 644 |
#define POPW(ssp, sp, sp_mask, val)\
|
| 645 |
{\
|
| 646 |
val = lduw_kernel((ssp) + (sp & (sp_mask)));\ |
| 647 |
sp += 2;\
|
| 648 |
} |
| 649 |
|
| 650 |
#define POPL(ssp, sp, sp_mask, val)\
|
| 651 |
{\
|
| 652 |
val = (uint32_t)ldl_kernel(SEG_ADDL(ssp, sp, sp_mask));\ |
| 653 |
sp += 4;\
|
| 654 |
} |
| 655 |
|
| 656 |
/* protected mode interrupt */
|
| 657 |
static void do_interrupt_protected(int intno, int is_int, int error_code, |
| 658 |
unsigned int next_eip, int is_hw) |
| 659 |
{
|
| 660 |
SegmentCache *dt; |
| 661 |
target_ulong ptr, ssp; |
| 662 |
int type, dpl, selector, ss_dpl, cpl;
|
| 663 |
int has_error_code, new_stack, shift;
|
| 664 |
uint32_t e1, e2, offset, ss = 0, esp, ss_e1 = 0, ss_e2 = 0; |
| 665 |
uint32_t old_eip, sp_mask; |
| 666 |
|
| 667 |
has_error_code = 0;
|
| 668 |
if (!is_int && !is_hw)
|
| 669 |
has_error_code = exeption_has_error_code(intno); |
| 670 |
if (is_int)
|
| 671 |
old_eip = next_eip; |
| 672 |
else
|
| 673 |
old_eip = env->eip; |
| 674 |
|
| 675 |
dt = &env->idt; |
| 676 |
if (intno * 8 + 7 > dt->limit) |
| 677 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
| 678 |
ptr = dt->base + intno * 8;
|
| 679 |
e1 = ldl_kernel(ptr); |
| 680 |
e2 = ldl_kernel(ptr + 4);
|
| 681 |
/* check gate type */
|
| 682 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
| 683 |
switch(type) {
|
| 684 |
case 5: /* task gate */ |
| 685 |
/* must do that check here to return the correct error code */
|
| 686 |
if (!(e2 & DESC_P_MASK))
|
| 687 |
raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2); |
| 688 |
switch_tss(intno * 8, e1, e2, SWITCH_TSS_CALL, old_eip);
|
| 689 |
if (has_error_code) {
|
| 690 |
int type;
|
| 691 |
uint32_t mask; |
| 692 |
/* push the error code */
|
| 693 |
type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
|
| 694 |
shift = type >> 3;
|
| 695 |
if (env->segs[R_SS].flags & DESC_B_MASK)
|
| 696 |
mask = 0xffffffff;
|
| 697 |
else
|
| 698 |
mask = 0xffff;
|
| 699 |
esp = (ESP - (2 << shift)) & mask;
|
| 700 |
ssp = env->segs[R_SS].base + esp; |
| 701 |
if (shift)
|
| 702 |
stl_kernel(ssp, error_code); |
| 703 |
else
|
| 704 |
stw_kernel(ssp, error_code); |
| 705 |
SET_ESP(esp, mask); |
| 706 |
} |
| 707 |
return;
|
| 708 |
case 6: /* 286 interrupt gate */ |
| 709 |
case 7: /* 286 trap gate */ |
| 710 |
case 14: /* 386 interrupt gate */ |
| 711 |
case 15: /* 386 trap gate */ |
| 712 |
break;
|
| 713 |
default:
|
| 714 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
| 715 |
break;
|
| 716 |
} |
| 717 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 718 |
cpl = env->hflags & HF_CPL_MASK; |
| 719 |
/* check privilege if software int */
|
| 720 |
if (is_int && dpl < cpl)
|
| 721 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
| 722 |
/* check valid bit */
|
| 723 |
if (!(e2 & DESC_P_MASK))
|
| 724 |
raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2); |
| 725 |
selector = e1 >> 16;
|
| 726 |
offset = (e2 & 0xffff0000) | (e1 & 0x0000ffff); |
| 727 |
if ((selector & 0xfffc) == 0) |
| 728 |
raise_exception_err(EXCP0D_GPF, 0);
|
| 729 |
|
| 730 |
if (load_segment(&e1, &e2, selector) != 0) |
| 731 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 732 |
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
| 733 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 734 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 735 |
if (dpl > cpl)
|
| 736 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 737 |
if (!(e2 & DESC_P_MASK))
|
| 738 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
| 739 |
if (!(e2 & DESC_C_MASK) && dpl < cpl) {
|
| 740 |
/* to inner privilege */
|
| 741 |
get_ss_esp_from_tss(&ss, &esp, dpl); |
| 742 |
if ((ss & 0xfffc) == 0) |
| 743 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
| 744 |
if ((ss & 3) != dpl) |
| 745 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
| 746 |
if (load_segment(&ss_e1, &ss_e2, ss) != 0) |
| 747 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
| 748 |
ss_dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
| 749 |
if (ss_dpl != dpl)
|
| 750 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
| 751 |
if (!(ss_e2 & DESC_S_MASK) ||
|
| 752 |
(ss_e2 & DESC_CS_MASK) || |
| 753 |
!(ss_e2 & DESC_W_MASK)) |
| 754 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
| 755 |
if (!(ss_e2 & DESC_P_MASK))
|
| 756 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
| 757 |
new_stack = 1;
|
| 758 |
sp_mask = get_sp_mask(ss_e2); |
| 759 |
ssp = get_seg_base(ss_e1, ss_e2); |
| 760 |
} else if ((e2 & DESC_C_MASK) || dpl == cpl) { |
| 761 |
/* to same privilege */
|
| 762 |
if (env->eflags & VM_MASK)
|
| 763 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 764 |
new_stack = 0;
|
| 765 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
| 766 |
ssp = env->segs[R_SS].base; |
| 767 |
esp = ESP; |
| 768 |
dpl = cpl; |
| 769 |
} else {
|
| 770 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 771 |
new_stack = 0; /* avoid warning */ |
| 772 |
sp_mask = 0; /* avoid warning */ |
| 773 |
ssp = 0; /* avoid warning */ |
| 774 |
esp = 0; /* avoid warning */ |
| 775 |
} |
| 776 |
|
| 777 |
shift = type >> 3;
|
| 778 |
|
| 779 |
#if 0
|
| 780 |
/* XXX: check that enough room is available */
|
| 781 |
push_size = 6 + (new_stack << 2) + (has_error_code << 1);
|
| 782 |
if (env->eflags & VM_MASK)
|
| 783 |
push_size += 8;
|
| 784 |
push_size <<= shift;
|
| 785 |
#endif
|
| 786 |
if (shift == 1) { |
| 787 |
if (new_stack) {
|
| 788 |
if (env->eflags & VM_MASK) {
|
| 789 |
PUSHL(ssp, esp, sp_mask, env->segs[R_GS].selector); |
| 790 |
PUSHL(ssp, esp, sp_mask, env->segs[R_FS].selector); |
| 791 |
PUSHL(ssp, esp, sp_mask, env->segs[R_DS].selector); |
| 792 |
PUSHL(ssp, esp, sp_mask, env->segs[R_ES].selector); |
| 793 |
} |
| 794 |
PUSHL(ssp, esp, sp_mask, env->segs[R_SS].selector); |
| 795 |
PUSHL(ssp, esp, sp_mask, ESP); |
| 796 |
} |
| 797 |
PUSHL(ssp, esp, sp_mask, compute_eflags()); |
| 798 |
PUSHL(ssp, esp, sp_mask, env->segs[R_CS].selector); |
| 799 |
PUSHL(ssp, esp, sp_mask, old_eip); |
| 800 |
if (has_error_code) {
|
| 801 |
PUSHL(ssp, esp, sp_mask, error_code); |
| 802 |
} |
| 803 |
} else {
|
| 804 |
if (new_stack) {
|
| 805 |
if (env->eflags & VM_MASK) {
|
| 806 |
PUSHW(ssp, esp, sp_mask, env->segs[R_GS].selector); |
| 807 |
PUSHW(ssp, esp, sp_mask, env->segs[R_FS].selector); |
| 808 |
PUSHW(ssp, esp, sp_mask, env->segs[R_DS].selector); |
| 809 |
PUSHW(ssp, esp, sp_mask, env->segs[R_ES].selector); |
| 810 |
} |
| 811 |
PUSHW(ssp, esp, sp_mask, env->segs[R_SS].selector); |
| 812 |
PUSHW(ssp, esp, sp_mask, ESP); |
| 813 |
} |
| 814 |
PUSHW(ssp, esp, sp_mask, compute_eflags()); |
| 815 |
PUSHW(ssp, esp, sp_mask, env->segs[R_CS].selector); |
| 816 |
PUSHW(ssp, esp, sp_mask, old_eip); |
| 817 |
if (has_error_code) {
|
| 818 |
PUSHW(ssp, esp, sp_mask, error_code); |
| 819 |
} |
| 820 |
} |
| 821 |
|
| 822 |
if (new_stack) {
|
| 823 |
if (env->eflags & VM_MASK) {
|
| 824 |
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0, 0); |
| 825 |
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0, 0); |
| 826 |
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0, 0); |
| 827 |
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0, 0); |
| 828 |
} |
| 829 |
ss = (ss & ~3) | dpl;
|
| 830 |
cpu_x86_load_seg_cache(env, R_SS, ss, |
| 831 |
ssp, get_seg_limit(ss_e1, ss_e2), ss_e2); |
| 832 |
} |
| 833 |
SET_ESP(esp, sp_mask); |
| 834 |
|
| 835 |
selector = (selector & ~3) | dpl;
|
| 836 |
cpu_x86_load_seg_cache(env, R_CS, selector, |
| 837 |
get_seg_base(e1, e2), |
| 838 |
get_seg_limit(e1, e2), |
| 839 |
e2); |
| 840 |
cpu_x86_set_cpl(env, dpl); |
| 841 |
env->eip = offset; |
| 842 |
|
| 843 |
/* interrupt gate clear IF mask */
|
| 844 |
if ((type & 1) == 0) { |
| 845 |
env->eflags &= ~IF_MASK; |
| 846 |
} |
| 847 |
env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK); |
| 848 |
} |
| 849 |
|
| 850 |
#ifdef TARGET_X86_64
|
| 851 |
|
| 852 |
#define PUSHQ(sp, val)\
|
| 853 |
{\
|
| 854 |
sp -= 8;\
|
| 855 |
stq_kernel(sp, (val));\ |
| 856 |
} |
| 857 |
|
| 858 |
#define POPQ(sp, val)\
|
| 859 |
{\
|
| 860 |
val = ldq_kernel(sp);\ |
| 861 |
sp += 8;\
|
| 862 |
} |
| 863 |
|
| 864 |
static inline target_ulong get_rsp_from_tss(int level) |
| 865 |
{
|
| 866 |
int index;
|
| 867 |
|
| 868 |
#if 0
|
| 869 |
printf("TR: base=" TARGET_FMT_lx " limit=%x\n",
|
| 870 |
env->tr.base, env->tr.limit);
|
| 871 |
#endif
|
| 872 |
|
| 873 |
if (!(env->tr.flags & DESC_P_MASK))
|
| 874 |
cpu_abort(env, "invalid tss");
|
| 875 |
index = 8 * level + 4; |
| 876 |
if ((index + 7) > env->tr.limit) |
| 877 |
raise_exception_err(EXCP0A_TSS, env->tr.selector & 0xfffc);
|
| 878 |
return ldq_kernel(env->tr.base + index);
|
| 879 |
} |
| 880 |
|
| 881 |
/* 64 bit interrupt */
|
| 882 |
static void do_interrupt64(int intno, int is_int, int error_code, |
| 883 |
target_ulong next_eip, int is_hw)
|
| 884 |
{
|
| 885 |
SegmentCache *dt; |
| 886 |
target_ulong ptr; |
| 887 |
int type, dpl, selector, cpl, ist;
|
| 888 |
int has_error_code, new_stack;
|
| 889 |
uint32_t e1, e2, e3, ss; |
| 890 |
target_ulong old_eip, esp, offset; |
| 891 |
|
| 892 |
has_error_code = 0;
|
| 893 |
if (!is_int && !is_hw)
|
| 894 |
has_error_code = exeption_has_error_code(intno); |
| 895 |
if (is_int)
|
| 896 |
old_eip = next_eip; |
| 897 |
else
|
| 898 |
old_eip = env->eip; |
| 899 |
|
| 900 |
dt = &env->idt; |
| 901 |
if (intno * 16 + 15 > dt->limit) |
| 902 |
raise_exception_err(EXCP0D_GPF, intno * 16 + 2); |
| 903 |
ptr = dt->base + intno * 16;
|
| 904 |
e1 = ldl_kernel(ptr); |
| 905 |
e2 = ldl_kernel(ptr + 4);
|
| 906 |
e3 = ldl_kernel(ptr + 8);
|
| 907 |
/* check gate type */
|
| 908 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
| 909 |
switch(type) {
|
| 910 |
case 14: /* 386 interrupt gate */ |
| 911 |
case 15: /* 386 trap gate */ |
| 912 |
break;
|
| 913 |
default:
|
| 914 |
raise_exception_err(EXCP0D_GPF, intno * 16 + 2); |
| 915 |
break;
|
| 916 |
} |
| 917 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 918 |
cpl = env->hflags & HF_CPL_MASK; |
| 919 |
/* check privilege if software int */
|
| 920 |
if (is_int && dpl < cpl)
|
| 921 |
raise_exception_err(EXCP0D_GPF, intno * 16 + 2); |
| 922 |
/* check valid bit */
|
| 923 |
if (!(e2 & DESC_P_MASK))
|
| 924 |
raise_exception_err(EXCP0B_NOSEG, intno * 16 + 2); |
| 925 |
selector = e1 >> 16;
|
| 926 |
offset = ((target_ulong)e3 << 32) | (e2 & 0xffff0000) | (e1 & 0x0000ffff); |
| 927 |
ist = e2 & 7;
|
| 928 |
if ((selector & 0xfffc) == 0) |
| 929 |
raise_exception_err(EXCP0D_GPF, 0);
|
| 930 |
|
| 931 |
if (load_segment(&e1, &e2, selector) != 0) |
| 932 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 933 |
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
| 934 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 935 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 936 |
if (dpl > cpl)
|
| 937 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 938 |
if (!(e2 & DESC_P_MASK))
|
| 939 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
| 940 |
if (!(e2 & DESC_L_MASK) || (e2 & DESC_B_MASK))
|
| 941 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 942 |
if ((!(e2 & DESC_C_MASK) && dpl < cpl) || ist != 0) { |
| 943 |
/* to inner privilege */
|
| 944 |
if (ist != 0) |
| 945 |
esp = get_rsp_from_tss(ist + 3);
|
| 946 |
else
|
| 947 |
esp = get_rsp_from_tss(dpl); |
| 948 |
esp &= ~0xfLL; /* align stack */ |
| 949 |
ss = 0;
|
| 950 |
new_stack = 1;
|
| 951 |
} else if ((e2 & DESC_C_MASK) || dpl == cpl) { |
| 952 |
/* to same privilege */
|
| 953 |
if (env->eflags & VM_MASK)
|
| 954 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 955 |
new_stack = 0;
|
| 956 |
if (ist != 0) |
| 957 |
esp = get_rsp_from_tss(ist + 3);
|
| 958 |
else
|
| 959 |
esp = ESP; |
| 960 |
esp &= ~0xfLL; /* align stack */ |
| 961 |
dpl = cpl; |
| 962 |
} else {
|
| 963 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 964 |
new_stack = 0; /* avoid warning */ |
| 965 |
esp = 0; /* avoid warning */ |
| 966 |
} |
| 967 |
|
| 968 |
PUSHQ(esp, env->segs[R_SS].selector); |
| 969 |
PUSHQ(esp, ESP); |
| 970 |
PUSHQ(esp, compute_eflags()); |
| 971 |
PUSHQ(esp, env->segs[R_CS].selector); |
| 972 |
PUSHQ(esp, old_eip); |
| 973 |
if (has_error_code) {
|
| 974 |
PUSHQ(esp, error_code); |
| 975 |
} |
| 976 |
|
| 977 |
if (new_stack) {
|
| 978 |
ss = 0 | dpl;
|
| 979 |
cpu_x86_load_seg_cache(env, R_SS, ss, 0, 0, 0); |
| 980 |
} |
| 981 |
ESP = esp; |
| 982 |
|
| 983 |
selector = (selector & ~3) | dpl;
|
| 984 |
cpu_x86_load_seg_cache(env, R_CS, selector, |
| 985 |
get_seg_base(e1, e2), |
| 986 |
get_seg_limit(e1, e2), |
| 987 |
e2); |
| 988 |
cpu_x86_set_cpl(env, dpl); |
| 989 |
env->eip = offset; |
| 990 |
|
| 991 |
/* interrupt gate clear IF mask */
|
| 992 |
if ((type & 1) == 0) { |
| 993 |
env->eflags &= ~IF_MASK; |
| 994 |
} |
| 995 |
env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK); |
| 996 |
} |
| 997 |
#endif
|
| 998 |
|
| 999 |
#ifdef TARGET_X86_64
|
| 1000 |
#if defined(CONFIG_USER_ONLY)
|
| 1001 |
void helper_syscall(int next_eip_addend) |
| 1002 |
{
|
| 1003 |
env->exception_index = EXCP_SYSCALL; |
| 1004 |
env->exception_next_eip = env->eip + next_eip_addend; |
| 1005 |
cpu_loop_exit(); |
| 1006 |
} |
| 1007 |
#else
|
| 1008 |
void helper_syscall(int next_eip_addend) |
| 1009 |
{
|
| 1010 |
int selector;
|
| 1011 |
|
| 1012 |
if (!(env->efer & MSR_EFER_SCE)) {
|
| 1013 |
raise_exception_err(EXCP06_ILLOP, 0);
|
| 1014 |
} |
| 1015 |
selector = (env->star >> 32) & 0xffff; |
| 1016 |
if (env->hflags & HF_LMA_MASK) {
|
| 1017 |
int code64;
|
| 1018 |
|
| 1019 |
ECX = env->eip + next_eip_addend; |
| 1020 |
env->regs[11] = compute_eflags();
|
| 1021 |
|
| 1022 |
code64 = env->hflags & HF_CS64_MASK; |
| 1023 |
|
| 1024 |
cpu_x86_set_cpl(env, 0);
|
| 1025 |
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
|
| 1026 |
0, 0xffffffff, |
| 1027 |
DESC_G_MASK | DESC_P_MASK | |
| 1028 |
DESC_S_MASK | |
| 1029 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK); |
| 1030 |
cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc, |
| 1031 |
0, 0xffffffff, |
| 1032 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 1033 |
DESC_S_MASK | |
| 1034 |
DESC_W_MASK | DESC_A_MASK); |
| 1035 |
env->eflags &= ~env->fmask; |
| 1036 |
load_eflags(env->eflags, 0);
|
| 1037 |
if (code64)
|
| 1038 |
env->eip = env->lstar; |
| 1039 |
else
|
| 1040 |
env->eip = env->cstar; |
| 1041 |
} else {
|
| 1042 |
ECX = (uint32_t)(env->eip + next_eip_addend); |
| 1043 |
|
| 1044 |
cpu_x86_set_cpl(env, 0);
|
| 1045 |
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
|
| 1046 |
0, 0xffffffff, |
| 1047 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 1048 |
DESC_S_MASK | |
| 1049 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
| 1050 |
cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc, |
| 1051 |
0, 0xffffffff, |
| 1052 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 1053 |
DESC_S_MASK | |
| 1054 |
DESC_W_MASK | DESC_A_MASK); |
| 1055 |
env->eflags &= ~(IF_MASK | RF_MASK | VM_MASK); |
| 1056 |
env->eip = (uint32_t)env->star; |
| 1057 |
} |
| 1058 |
} |
| 1059 |
#endif
|
| 1060 |
#endif
|
| 1061 |
|
| 1062 |
#ifdef TARGET_X86_64
|
| 1063 |
void helper_sysret(int dflag) |
| 1064 |
{
|
| 1065 |
int cpl, selector;
|
| 1066 |
|
| 1067 |
if (!(env->efer & MSR_EFER_SCE)) {
|
| 1068 |
raise_exception_err(EXCP06_ILLOP, 0);
|
| 1069 |
} |
| 1070 |
cpl = env->hflags & HF_CPL_MASK; |
| 1071 |
if (!(env->cr[0] & CR0_PE_MASK) || cpl != 0) { |
| 1072 |
raise_exception_err(EXCP0D_GPF, 0);
|
| 1073 |
} |
| 1074 |
selector = (env->star >> 48) & 0xffff; |
| 1075 |
if (env->hflags & HF_LMA_MASK) {
|
| 1076 |
if (dflag == 2) { |
| 1077 |
cpu_x86_load_seg_cache(env, R_CS, (selector + 16) | 3, |
| 1078 |
0, 0xffffffff, |
| 1079 |
DESC_G_MASK | DESC_P_MASK | |
| 1080 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
| 1081 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | |
| 1082 |
DESC_L_MASK); |
| 1083 |
env->eip = ECX; |
| 1084 |
} else {
|
| 1085 |
cpu_x86_load_seg_cache(env, R_CS, selector | 3,
|
| 1086 |
0, 0xffffffff, |
| 1087 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 1088 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
| 1089 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
| 1090 |
env->eip = (uint32_t)ECX; |
| 1091 |
} |
| 1092 |
cpu_x86_load_seg_cache(env, R_SS, selector + 8,
|
| 1093 |
0, 0xffffffff, |
| 1094 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 1095 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
| 1096 |
DESC_W_MASK | DESC_A_MASK); |
| 1097 |
load_eflags((uint32_t)(env->regs[11]), TF_MASK | AC_MASK | ID_MASK |
|
| 1098 |
IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK); |
| 1099 |
cpu_x86_set_cpl(env, 3);
|
| 1100 |
} else {
|
| 1101 |
cpu_x86_load_seg_cache(env, R_CS, selector | 3,
|
| 1102 |
0, 0xffffffff, |
| 1103 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 1104 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
| 1105 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
| 1106 |
env->eip = (uint32_t)ECX; |
| 1107 |
cpu_x86_load_seg_cache(env, R_SS, selector + 8,
|
| 1108 |
0, 0xffffffff, |
| 1109 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 1110 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
| 1111 |
DESC_W_MASK | DESC_A_MASK); |
| 1112 |
env->eflags |= IF_MASK; |
| 1113 |
cpu_x86_set_cpl(env, 3);
|
| 1114 |
} |
| 1115 |
} |
| 1116 |
#endif
|
| 1117 |
|
| 1118 |
/* real mode interrupt */
|
| 1119 |
static void do_interrupt_real(int intno, int is_int, int error_code, |
| 1120 |
unsigned int next_eip) |
| 1121 |
{
|
| 1122 |
SegmentCache *dt; |
| 1123 |
target_ulong ptr, ssp; |
| 1124 |
int selector;
|
| 1125 |
uint32_t offset, esp; |
| 1126 |
uint32_t old_cs, old_eip; |
| 1127 |
|
| 1128 |
/* real mode (simpler !) */
|
| 1129 |
dt = &env->idt; |
| 1130 |
if (intno * 4 + 3 > dt->limit) |
| 1131 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
| 1132 |
ptr = dt->base + intno * 4;
|
| 1133 |
offset = lduw_kernel(ptr); |
| 1134 |
selector = lduw_kernel(ptr + 2);
|
| 1135 |
esp = ESP; |
| 1136 |
ssp = env->segs[R_SS].base; |
| 1137 |
if (is_int)
|
| 1138 |
old_eip = next_eip; |
| 1139 |
else
|
| 1140 |
old_eip = env->eip; |
| 1141 |
old_cs = env->segs[R_CS].selector; |
| 1142 |
/* XXX: use SS segment size ? */
|
| 1143 |
PUSHW(ssp, esp, 0xffff, compute_eflags());
|
| 1144 |
PUSHW(ssp, esp, 0xffff, old_cs);
|
| 1145 |
PUSHW(ssp, esp, 0xffff, old_eip);
|
| 1146 |
|
| 1147 |
/* update processor state */
|
| 1148 |
ESP = (ESP & ~0xffff) | (esp & 0xffff); |
| 1149 |
env->eip = offset; |
| 1150 |
env->segs[R_CS].selector = selector; |
| 1151 |
env->segs[R_CS].base = (selector << 4);
|
| 1152 |
env->eflags &= ~(IF_MASK | TF_MASK | AC_MASK | RF_MASK); |
| 1153 |
} |
| 1154 |
|
| 1155 |
/* fake user mode interrupt */
|
| 1156 |
void do_interrupt_user(int intno, int is_int, int error_code, |
| 1157 |
target_ulong next_eip) |
| 1158 |
{
|
| 1159 |
SegmentCache *dt; |
| 1160 |
target_ulong ptr; |
| 1161 |
int dpl, cpl, shift;
|
| 1162 |
uint32_t e2; |
| 1163 |
|
| 1164 |
dt = &env->idt; |
| 1165 |
if (env->hflags & HF_LMA_MASK) {
|
| 1166 |
shift = 4;
|
| 1167 |
} else {
|
| 1168 |
shift = 3;
|
| 1169 |
} |
| 1170 |
ptr = dt->base + (intno << shift); |
| 1171 |
e2 = ldl_kernel(ptr + 4);
|
| 1172 |
|
| 1173 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 1174 |
cpl = env->hflags & HF_CPL_MASK; |
| 1175 |
/* check privilege if software int */
|
| 1176 |
if (is_int && dpl < cpl)
|
| 1177 |
raise_exception_err(EXCP0D_GPF, (intno << shift) + 2);
|
| 1178 |
|
| 1179 |
/* Since we emulate only user space, we cannot do more than
|
| 1180 |
exiting the emulation with the suitable exception and error
|
| 1181 |
code */
|
| 1182 |
if (is_int)
|
| 1183 |
EIP = next_eip; |
| 1184 |
} |
| 1185 |
|
| 1186 |
#if !defined(CONFIG_USER_ONLY)
|
| 1187 |
static void handle_even_inj(int intno, int is_int, int error_code, |
| 1188 |
int is_hw, int rm) |
| 1189 |
{
|
| 1190 |
uint32_t event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
|
| 1191 |
if (!(event_inj & SVM_EVTINJ_VALID)) {
|
| 1192 |
int type;
|
| 1193 |
if (is_int)
|
| 1194 |
type = SVM_EVTINJ_TYPE_SOFT; |
| 1195 |
else
|
| 1196 |
type = SVM_EVTINJ_TYPE_EXEPT; |
| 1197 |
event_inj = intno | type | SVM_EVTINJ_VALID; |
| 1198 |
if (!rm && exeption_has_error_code(intno)) {
|
| 1199 |
event_inj |= SVM_EVTINJ_VALID_ERR; |
| 1200 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj_err), error_code);
|
| 1201 |
} |
| 1202 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj), event_inj);
|
| 1203 |
} |
| 1204 |
} |
| 1205 |
#endif
|
| 1206 |
|
| 1207 |
/*
|
| 1208 |
* Begin execution of an interruption. is_int is TRUE if coming from
|
| 1209 |
* the int instruction. next_eip is the EIP value AFTER the interrupt
|
| 1210 |
* instruction. It is only relevant if is_int is TRUE.
|
| 1211 |
*/
|
| 1212 |
void do_interrupt(int intno, int is_int, int error_code, |
| 1213 |
target_ulong next_eip, int is_hw)
|
| 1214 |
{
|
| 1215 |
if (qemu_loglevel_mask(CPU_LOG_INT)) {
|
| 1216 |
if ((env->cr[0] & CR0_PE_MASK)) { |
| 1217 |
static int count; |
| 1218 |
qemu_log("%6d: v=%02x e=%04x i=%d cpl=%d IP=%04x:" TARGET_FMT_lx " pc=" TARGET_FMT_lx " SP=%04x:" TARGET_FMT_lx, |
| 1219 |
count, intno, error_code, is_int, |
| 1220 |
env->hflags & HF_CPL_MASK, |
| 1221 |
env->segs[R_CS].selector, EIP, |
| 1222 |
(int)env->segs[R_CS].base + EIP,
|
| 1223 |
env->segs[R_SS].selector, ESP); |
| 1224 |
if (intno == 0x0e) { |
| 1225 |
qemu_log(" CR2=" TARGET_FMT_lx, env->cr[2]); |
| 1226 |
} else {
|
| 1227 |
qemu_log(" EAX=" TARGET_FMT_lx, EAX);
|
| 1228 |
} |
| 1229 |
qemu_log("\n");
|
| 1230 |
log_cpu_state(env, X86_DUMP_CCOP); |
| 1231 |
#if 0
|
| 1232 |
{
|
| 1233 |
int i;
|
| 1234 |
uint8_t *ptr;
|
| 1235 |
qemu_log(" code=");
|
| 1236 |
ptr = env->segs[R_CS].base + env->eip;
|
| 1237 |
for(i = 0; i < 16; i++) {
|
| 1238 |
qemu_log(" %02x", ldub(ptr + i));
|
| 1239 |
}
|
| 1240 |
qemu_log("\n");
|
| 1241 |
}
|
| 1242 |
#endif
|
| 1243 |
count++; |
| 1244 |
} |
| 1245 |
} |
| 1246 |
if (env->cr[0] & CR0_PE_MASK) { |
| 1247 |
#if !defined(CONFIG_USER_ONLY)
|
| 1248 |
if (env->hflags & HF_SVMI_MASK)
|
| 1249 |
handle_even_inj(intno, is_int, error_code, is_hw, 0);
|
| 1250 |
#endif
|
| 1251 |
#ifdef TARGET_X86_64
|
| 1252 |
if (env->hflags & HF_LMA_MASK) {
|
| 1253 |
do_interrupt64(intno, is_int, error_code, next_eip, is_hw); |
| 1254 |
} else
|
| 1255 |
#endif
|
| 1256 |
{
|
| 1257 |
do_interrupt_protected(intno, is_int, error_code, next_eip, is_hw); |
| 1258 |
} |
| 1259 |
} else {
|
| 1260 |
#if !defined(CONFIG_USER_ONLY)
|
| 1261 |
if (env->hflags & HF_SVMI_MASK)
|
| 1262 |
handle_even_inj(intno, is_int, error_code, is_hw, 1);
|
| 1263 |
#endif
|
| 1264 |
do_interrupt_real(intno, is_int, error_code, next_eip); |
| 1265 |
} |
| 1266 |
|
| 1267 |
#if !defined(CONFIG_USER_ONLY)
|
| 1268 |
if (env->hflags & HF_SVMI_MASK) {
|
| 1269 |
uint32_t event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
|
| 1270 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj), event_inj & ~SVM_EVTINJ_VALID);
|
| 1271 |
} |
| 1272 |
#endif
|
| 1273 |
} |
| 1274 |
|
| 1275 |
/* This should come from sysemu.h - if we could include it here... */
|
| 1276 |
void qemu_system_reset_request(void); |
| 1277 |
|
| 1278 |
/*
|
| 1279 |
* Check nested exceptions and change to double or triple fault if
|
| 1280 |
* needed. It should only be called, if this is not an interrupt.
|
| 1281 |
* Returns the new exception number.
|
| 1282 |
*/
|
| 1283 |
static int check_exception(int intno, int *error_code) |
| 1284 |
{
|
| 1285 |
int first_contributory = env->old_exception == 0 || |
| 1286 |
(env->old_exception >= 10 &&
|
| 1287 |
env->old_exception <= 13);
|
| 1288 |
int second_contributory = intno == 0 || |
| 1289 |
(intno >= 10 && intno <= 13); |
| 1290 |
|
| 1291 |
qemu_log_mask(CPU_LOG_INT, "check_exception old: 0x%x new 0x%x\n",
|
| 1292 |
env->old_exception, intno); |
| 1293 |
|
| 1294 |
#if !defined(CONFIG_USER_ONLY)
|
| 1295 |
if (env->old_exception == EXCP08_DBLE) {
|
| 1296 |
if (env->hflags & HF_SVMI_MASK)
|
| 1297 |
helper_vmexit(SVM_EXIT_SHUTDOWN, 0); /* does not return */ |
| 1298 |
|
| 1299 |
qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
|
| 1300 |
|
| 1301 |
qemu_system_reset_request(); |
| 1302 |
return EXCP_HLT;
|
| 1303 |
} |
| 1304 |
#endif
|
| 1305 |
|
| 1306 |
if ((first_contributory && second_contributory)
|
| 1307 |
|| (env->old_exception == EXCP0E_PAGE && |
| 1308 |
(second_contributory || (intno == EXCP0E_PAGE)))) {
|
| 1309 |
intno = EXCP08_DBLE; |
| 1310 |
*error_code = 0;
|
| 1311 |
} |
| 1312 |
|
| 1313 |
if (second_contributory || (intno == EXCP0E_PAGE) ||
|
| 1314 |
(intno == EXCP08_DBLE)) |
| 1315 |
env->old_exception = intno; |
| 1316 |
|
| 1317 |
return intno;
|
| 1318 |
} |
| 1319 |
|
| 1320 |
/*
|
| 1321 |
* Signal an interruption. It is executed in the main CPU loop.
|
| 1322 |
* is_int is TRUE if coming from the int instruction. next_eip is the
|
| 1323 |
* EIP value AFTER the interrupt instruction. It is only relevant if
|
| 1324 |
* is_int is TRUE.
|
| 1325 |
*/
|
| 1326 |
static void QEMU_NORETURN raise_interrupt(int intno, int is_int, int error_code, |
| 1327 |
int next_eip_addend)
|
| 1328 |
{
|
| 1329 |
if (!is_int) {
|
| 1330 |
helper_svm_check_intercept_param(SVM_EXIT_EXCP_BASE + intno, error_code); |
| 1331 |
intno = check_exception(intno, &error_code); |
| 1332 |
} else {
|
| 1333 |
helper_svm_check_intercept_param(SVM_EXIT_SWINT, 0);
|
| 1334 |
} |
| 1335 |
|
| 1336 |
env->exception_index = intno; |
| 1337 |
env->error_code = error_code; |
| 1338 |
env->exception_is_int = is_int; |
| 1339 |
env->exception_next_eip = env->eip + next_eip_addend; |
| 1340 |
cpu_loop_exit(); |
| 1341 |
} |
| 1342 |
|
| 1343 |
/* shortcuts to generate exceptions */
|
| 1344 |
|
| 1345 |
void raise_exception_err(int exception_index, int error_code) |
| 1346 |
{
|
| 1347 |
raise_interrupt(exception_index, 0, error_code, 0); |
| 1348 |
} |
| 1349 |
|
| 1350 |
void raise_exception(int exception_index) |
| 1351 |
{
|
| 1352 |
raise_interrupt(exception_index, 0, 0, 0); |
| 1353 |
} |
| 1354 |
|
| 1355 |
void raise_exception_env(int exception_index, CPUState *nenv) |
| 1356 |
{
|
| 1357 |
env = nenv; |
| 1358 |
raise_exception(exception_index); |
| 1359 |
} |
| 1360 |
/* SMM support */
|
| 1361 |
|
| 1362 |
#if defined(CONFIG_USER_ONLY)
|
| 1363 |
|
| 1364 |
void do_smm_enter(void) |
| 1365 |
{
|
| 1366 |
} |
| 1367 |
|
| 1368 |
void helper_rsm(void) |
| 1369 |
{
|
| 1370 |
} |
| 1371 |
|
| 1372 |
#else
|
| 1373 |
|
| 1374 |
#ifdef TARGET_X86_64
|
| 1375 |
#define SMM_REVISION_ID 0x00020064 |
| 1376 |
#else
|
| 1377 |
#define SMM_REVISION_ID 0x00020000 |
| 1378 |
#endif
|
| 1379 |
|
| 1380 |
void do_smm_enter(void) |
| 1381 |
{
|
| 1382 |
target_ulong sm_state; |
| 1383 |
SegmentCache *dt; |
| 1384 |
int i, offset;
|
| 1385 |
|
| 1386 |
qemu_log_mask(CPU_LOG_INT, "SMM: enter\n");
|
| 1387 |
log_cpu_state_mask(CPU_LOG_INT, env, X86_DUMP_CCOP); |
| 1388 |
|
| 1389 |
env->hflags |= HF_SMM_MASK; |
| 1390 |
cpu_smm_update(env); |
| 1391 |
|
| 1392 |
sm_state = env->smbase + 0x8000;
|
| 1393 |
|
| 1394 |
#ifdef TARGET_X86_64
|
| 1395 |
for(i = 0; i < 6; i++) { |
| 1396 |
dt = &env->segs[i]; |
| 1397 |
offset = 0x7e00 + i * 16; |
| 1398 |
stw_phys(sm_state + offset, dt->selector); |
| 1399 |
stw_phys(sm_state + offset + 2, (dt->flags >> 8) & 0xf0ff); |
| 1400 |
stl_phys(sm_state + offset + 4, dt->limit);
|
| 1401 |
stq_phys(sm_state + offset + 8, dt->base);
|
| 1402 |
} |
| 1403 |
|
| 1404 |
stq_phys(sm_state + 0x7e68, env->gdt.base);
|
| 1405 |
stl_phys(sm_state + 0x7e64, env->gdt.limit);
|
| 1406 |
|
| 1407 |
stw_phys(sm_state + 0x7e70, env->ldt.selector);
|
| 1408 |
stq_phys(sm_state + 0x7e78, env->ldt.base);
|
| 1409 |
stl_phys(sm_state + 0x7e74, env->ldt.limit);
|
| 1410 |
stw_phys(sm_state + 0x7e72, (env->ldt.flags >> 8) & 0xf0ff); |
| 1411 |
|
| 1412 |
stq_phys(sm_state + 0x7e88, env->idt.base);
|
| 1413 |
stl_phys(sm_state + 0x7e84, env->idt.limit);
|
| 1414 |
|
| 1415 |
stw_phys(sm_state + 0x7e90, env->tr.selector);
|
| 1416 |
stq_phys(sm_state + 0x7e98, env->tr.base);
|
| 1417 |
stl_phys(sm_state + 0x7e94, env->tr.limit);
|
| 1418 |
stw_phys(sm_state + 0x7e92, (env->tr.flags >> 8) & 0xf0ff); |
| 1419 |
|
| 1420 |
stq_phys(sm_state + 0x7ed0, env->efer);
|
| 1421 |
|
| 1422 |
stq_phys(sm_state + 0x7ff8, EAX);
|
| 1423 |
stq_phys(sm_state + 0x7ff0, ECX);
|
| 1424 |
stq_phys(sm_state + 0x7fe8, EDX);
|
| 1425 |
stq_phys(sm_state + 0x7fe0, EBX);
|
| 1426 |
stq_phys(sm_state + 0x7fd8, ESP);
|
| 1427 |
stq_phys(sm_state + 0x7fd0, EBP);
|
| 1428 |
stq_phys(sm_state + 0x7fc8, ESI);
|
| 1429 |
stq_phys(sm_state + 0x7fc0, EDI);
|
| 1430 |
for(i = 8; i < 16; i++) |
| 1431 |
stq_phys(sm_state + 0x7ff8 - i * 8, env->regs[i]); |
| 1432 |
stq_phys(sm_state + 0x7f78, env->eip);
|
| 1433 |
stl_phys(sm_state + 0x7f70, compute_eflags());
|
| 1434 |
stl_phys(sm_state + 0x7f68, env->dr[6]); |
| 1435 |
stl_phys(sm_state + 0x7f60, env->dr[7]); |
| 1436 |
|
| 1437 |
stl_phys(sm_state + 0x7f48, env->cr[4]); |
| 1438 |
stl_phys(sm_state + 0x7f50, env->cr[3]); |
| 1439 |
stl_phys(sm_state + 0x7f58, env->cr[0]); |
| 1440 |
|
| 1441 |
stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
|
| 1442 |
stl_phys(sm_state + 0x7f00, env->smbase);
|
| 1443 |
#else
|
| 1444 |
stl_phys(sm_state + 0x7ffc, env->cr[0]); |
| 1445 |
stl_phys(sm_state + 0x7ff8, env->cr[3]); |
| 1446 |
stl_phys(sm_state + 0x7ff4, compute_eflags());
|
| 1447 |
stl_phys(sm_state + 0x7ff0, env->eip);
|
| 1448 |
stl_phys(sm_state + 0x7fec, EDI);
|
| 1449 |
stl_phys(sm_state + 0x7fe8, ESI);
|
| 1450 |
stl_phys(sm_state + 0x7fe4, EBP);
|
| 1451 |
stl_phys(sm_state + 0x7fe0, ESP);
|
| 1452 |
stl_phys(sm_state + 0x7fdc, EBX);
|
| 1453 |
stl_phys(sm_state + 0x7fd8, EDX);
|
| 1454 |
stl_phys(sm_state + 0x7fd4, ECX);
|
| 1455 |
stl_phys(sm_state + 0x7fd0, EAX);
|
| 1456 |
stl_phys(sm_state + 0x7fcc, env->dr[6]); |
| 1457 |
stl_phys(sm_state + 0x7fc8, env->dr[7]); |
| 1458 |
|
| 1459 |
stl_phys(sm_state + 0x7fc4, env->tr.selector);
|
| 1460 |
stl_phys(sm_state + 0x7f64, env->tr.base);
|
| 1461 |
stl_phys(sm_state + 0x7f60, env->tr.limit);
|
| 1462 |
stl_phys(sm_state + 0x7f5c, (env->tr.flags >> 8) & 0xf0ff); |
| 1463 |
|
| 1464 |
stl_phys(sm_state + 0x7fc0, env->ldt.selector);
|
| 1465 |
stl_phys(sm_state + 0x7f80, env->ldt.base);
|
| 1466 |
stl_phys(sm_state + 0x7f7c, env->ldt.limit);
|
| 1467 |
stl_phys(sm_state + 0x7f78, (env->ldt.flags >> 8) & 0xf0ff); |
| 1468 |
|
| 1469 |
stl_phys(sm_state + 0x7f74, env->gdt.base);
|
| 1470 |
stl_phys(sm_state + 0x7f70, env->gdt.limit);
|
| 1471 |
|
| 1472 |
stl_phys(sm_state + 0x7f58, env->idt.base);
|
| 1473 |
stl_phys(sm_state + 0x7f54, env->idt.limit);
|
| 1474 |
|
| 1475 |
for(i = 0; i < 6; i++) { |
| 1476 |
dt = &env->segs[i]; |
| 1477 |
if (i < 3) |
| 1478 |
offset = 0x7f84 + i * 12; |
| 1479 |
else
|
| 1480 |
offset = 0x7f2c + (i - 3) * 12; |
| 1481 |
stl_phys(sm_state + 0x7fa8 + i * 4, dt->selector); |
| 1482 |
stl_phys(sm_state + offset + 8, dt->base);
|
| 1483 |
stl_phys(sm_state + offset + 4, dt->limit);
|
| 1484 |
stl_phys(sm_state + offset, (dt->flags >> 8) & 0xf0ff); |
| 1485 |
} |
| 1486 |
stl_phys(sm_state + 0x7f14, env->cr[4]); |
| 1487 |
|
| 1488 |
stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
|
| 1489 |
stl_phys(sm_state + 0x7ef8, env->smbase);
|
| 1490 |
#endif
|
| 1491 |
/* init SMM cpu state */
|
| 1492 |
|
| 1493 |
#ifdef TARGET_X86_64
|
| 1494 |
cpu_load_efer(env, 0);
|
| 1495 |
#endif
|
| 1496 |
load_eflags(0, ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
|
| 1497 |
env->eip = 0x00008000;
|
| 1498 |
cpu_x86_load_seg_cache(env, R_CS, (env->smbase >> 4) & 0xffff, env->smbase, |
| 1499 |
0xffffffff, 0); |
| 1500 |
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffffffff, 0); |
| 1501 |
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffffffff, 0); |
| 1502 |
cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffffffff, 0); |
| 1503 |
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffffffff, 0); |
| 1504 |
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffffffff, 0); |
| 1505 |
|
| 1506 |
cpu_x86_update_cr0(env, |
| 1507 |
env->cr[0] & ~(CR0_PE_MASK | CR0_EM_MASK | CR0_TS_MASK | CR0_PG_MASK));
|
| 1508 |
cpu_x86_update_cr4(env, 0);
|
| 1509 |
env->dr[7] = 0x00000400; |
| 1510 |
CC_OP = CC_OP_EFLAGS; |
| 1511 |
} |
| 1512 |
|
| 1513 |
void helper_rsm(void) |
| 1514 |
{
|
| 1515 |
target_ulong sm_state; |
| 1516 |
int i, offset;
|
| 1517 |
uint32_t val; |
| 1518 |
|
| 1519 |
sm_state = env->smbase + 0x8000;
|
| 1520 |
#ifdef TARGET_X86_64
|
| 1521 |
cpu_load_efer(env, ldq_phys(sm_state + 0x7ed0));
|
| 1522 |
|
| 1523 |
for(i = 0; i < 6; i++) { |
| 1524 |
offset = 0x7e00 + i * 16; |
| 1525 |
cpu_x86_load_seg_cache(env, i, |
| 1526 |
lduw_phys(sm_state + offset), |
| 1527 |
ldq_phys(sm_state + offset + 8),
|
| 1528 |
ldl_phys(sm_state + offset + 4),
|
| 1529 |
(lduw_phys(sm_state + offset + 2) & 0xf0ff) << 8); |
| 1530 |
} |
| 1531 |
|
| 1532 |
env->gdt.base = ldq_phys(sm_state + 0x7e68);
|
| 1533 |
env->gdt.limit = ldl_phys(sm_state + 0x7e64);
|
| 1534 |
|
| 1535 |
env->ldt.selector = lduw_phys(sm_state + 0x7e70);
|
| 1536 |
env->ldt.base = ldq_phys(sm_state + 0x7e78);
|
| 1537 |
env->ldt.limit = ldl_phys(sm_state + 0x7e74);
|
| 1538 |
env->ldt.flags = (lduw_phys(sm_state + 0x7e72) & 0xf0ff) << 8; |
| 1539 |
|
| 1540 |
env->idt.base = ldq_phys(sm_state + 0x7e88);
|
| 1541 |
env->idt.limit = ldl_phys(sm_state + 0x7e84);
|
| 1542 |
|
| 1543 |
env->tr.selector = lduw_phys(sm_state + 0x7e90);
|
| 1544 |
env->tr.base = ldq_phys(sm_state + 0x7e98);
|
| 1545 |
env->tr.limit = ldl_phys(sm_state + 0x7e94);
|
| 1546 |
env->tr.flags = (lduw_phys(sm_state + 0x7e92) & 0xf0ff) << 8; |
| 1547 |
|
| 1548 |
EAX = ldq_phys(sm_state + 0x7ff8);
|
| 1549 |
ECX = ldq_phys(sm_state + 0x7ff0);
|
| 1550 |
EDX = ldq_phys(sm_state + 0x7fe8);
|
| 1551 |
EBX = ldq_phys(sm_state + 0x7fe0);
|
| 1552 |
ESP = ldq_phys(sm_state + 0x7fd8);
|
| 1553 |
EBP = ldq_phys(sm_state + 0x7fd0);
|
| 1554 |
ESI = ldq_phys(sm_state + 0x7fc8);
|
| 1555 |
EDI = ldq_phys(sm_state + 0x7fc0);
|
| 1556 |
for(i = 8; i < 16; i++) |
| 1557 |
env->regs[i] = ldq_phys(sm_state + 0x7ff8 - i * 8); |
| 1558 |
env->eip = ldq_phys(sm_state + 0x7f78);
|
| 1559 |
load_eflags(ldl_phys(sm_state + 0x7f70),
|
| 1560 |
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)); |
| 1561 |
env->dr[6] = ldl_phys(sm_state + 0x7f68); |
| 1562 |
env->dr[7] = ldl_phys(sm_state + 0x7f60); |
| 1563 |
|
| 1564 |
cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f48));
|
| 1565 |
cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7f50));
|
| 1566 |
cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7f58));
|
| 1567 |
|
| 1568 |
val = ldl_phys(sm_state + 0x7efc); /* revision ID */ |
| 1569 |
if (val & 0x20000) { |
| 1570 |
env->smbase = ldl_phys(sm_state + 0x7f00) & ~0x7fff; |
| 1571 |
} |
| 1572 |
#else
|
| 1573 |
cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7ffc));
|
| 1574 |
cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7ff8));
|
| 1575 |
load_eflags(ldl_phys(sm_state + 0x7ff4),
|
| 1576 |
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)); |
| 1577 |
env->eip = ldl_phys(sm_state + 0x7ff0);
|
| 1578 |
EDI = ldl_phys(sm_state + 0x7fec);
|
| 1579 |
ESI = ldl_phys(sm_state + 0x7fe8);
|
| 1580 |
EBP = ldl_phys(sm_state + 0x7fe4);
|
| 1581 |
ESP = ldl_phys(sm_state + 0x7fe0);
|
| 1582 |
EBX = ldl_phys(sm_state + 0x7fdc);
|
| 1583 |
EDX = ldl_phys(sm_state + 0x7fd8);
|
| 1584 |
ECX = ldl_phys(sm_state + 0x7fd4);
|
| 1585 |
EAX = ldl_phys(sm_state + 0x7fd0);
|
| 1586 |
env->dr[6] = ldl_phys(sm_state + 0x7fcc); |
| 1587 |
env->dr[7] = ldl_phys(sm_state + 0x7fc8); |
| 1588 |
|
| 1589 |
env->tr.selector = ldl_phys(sm_state + 0x7fc4) & 0xffff; |
| 1590 |
env->tr.base = ldl_phys(sm_state + 0x7f64);
|
| 1591 |
env->tr.limit = ldl_phys(sm_state + 0x7f60);
|
| 1592 |
env->tr.flags = (ldl_phys(sm_state + 0x7f5c) & 0xf0ff) << 8; |
| 1593 |
|
| 1594 |
env->ldt.selector = ldl_phys(sm_state + 0x7fc0) & 0xffff; |
| 1595 |
env->ldt.base = ldl_phys(sm_state + 0x7f80);
|
| 1596 |
env->ldt.limit = ldl_phys(sm_state + 0x7f7c);
|
| 1597 |
env->ldt.flags = (ldl_phys(sm_state + 0x7f78) & 0xf0ff) << 8; |
| 1598 |
|
| 1599 |
env->gdt.base = ldl_phys(sm_state + 0x7f74);
|
| 1600 |
env->gdt.limit = ldl_phys(sm_state + 0x7f70);
|
| 1601 |
|
| 1602 |
env->idt.base = ldl_phys(sm_state + 0x7f58);
|
| 1603 |
env->idt.limit = ldl_phys(sm_state + 0x7f54);
|
| 1604 |
|
| 1605 |
for(i = 0; i < 6; i++) { |
| 1606 |
if (i < 3) |
| 1607 |
offset = 0x7f84 + i * 12; |
| 1608 |
else
|
| 1609 |
offset = 0x7f2c + (i - 3) * 12; |
| 1610 |
cpu_x86_load_seg_cache(env, i, |
| 1611 |
ldl_phys(sm_state + 0x7fa8 + i * 4) & 0xffff, |
| 1612 |
ldl_phys(sm_state + offset + 8),
|
| 1613 |
ldl_phys(sm_state + offset + 4),
|
| 1614 |
(ldl_phys(sm_state + offset) & 0xf0ff) << 8); |
| 1615 |
} |
| 1616 |
cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f14));
|
| 1617 |
|
| 1618 |
val = ldl_phys(sm_state + 0x7efc); /* revision ID */ |
| 1619 |
if (val & 0x20000) { |
| 1620 |
env->smbase = ldl_phys(sm_state + 0x7ef8) & ~0x7fff; |
| 1621 |
} |
| 1622 |
#endif
|
| 1623 |
CC_OP = CC_OP_EFLAGS; |
| 1624 |
env->hflags &= ~HF_SMM_MASK; |
| 1625 |
cpu_smm_update(env); |
| 1626 |
|
| 1627 |
qemu_log_mask(CPU_LOG_INT, "SMM: after RSM\n");
|
| 1628 |
log_cpu_state_mask(CPU_LOG_INT, env, X86_DUMP_CCOP); |
| 1629 |
} |
| 1630 |
|
| 1631 |
#endif /* !CONFIG_USER_ONLY */ |
| 1632 |
|
| 1633 |
|
| 1634 |
/* division, flags are undefined */
|
| 1635 |
|
| 1636 |
void helper_divb_AL(target_ulong t0)
|
| 1637 |
{
|
| 1638 |
unsigned int num, den, q, r; |
| 1639 |
|
| 1640 |
num = (EAX & 0xffff);
|
| 1641 |
den = (t0 & 0xff);
|
| 1642 |
if (den == 0) { |
| 1643 |
raise_exception(EXCP00_DIVZ); |
| 1644 |
} |
| 1645 |
q = (num / den); |
| 1646 |
if (q > 0xff) |
| 1647 |
raise_exception(EXCP00_DIVZ); |
| 1648 |
q &= 0xff;
|
| 1649 |
r = (num % den) & 0xff;
|
| 1650 |
EAX = (EAX & ~0xffff) | (r << 8) | q; |
| 1651 |
} |
| 1652 |
|
| 1653 |
void helper_idivb_AL(target_ulong t0)
|
| 1654 |
{
|
| 1655 |
int num, den, q, r;
|
| 1656 |
|
| 1657 |
num = (int16_t)EAX; |
| 1658 |
den = (int8_t)t0; |
| 1659 |
if (den == 0) { |
| 1660 |
raise_exception(EXCP00_DIVZ); |
| 1661 |
} |
| 1662 |
q = (num / den); |
| 1663 |
if (q != (int8_t)q)
|
| 1664 |
raise_exception(EXCP00_DIVZ); |
| 1665 |
q &= 0xff;
|
| 1666 |
r = (num % den) & 0xff;
|
| 1667 |
EAX = (EAX & ~0xffff) | (r << 8) | q; |
| 1668 |
} |
| 1669 |
|
| 1670 |
void helper_divw_AX(target_ulong t0)
|
| 1671 |
{
|
| 1672 |
unsigned int num, den, q, r; |
| 1673 |
|
| 1674 |
num = (EAX & 0xffff) | ((EDX & 0xffff) << 16); |
| 1675 |
den = (t0 & 0xffff);
|
| 1676 |
if (den == 0) { |
| 1677 |
raise_exception(EXCP00_DIVZ); |
| 1678 |
} |
| 1679 |
q = (num / den); |
| 1680 |
if (q > 0xffff) |
| 1681 |
raise_exception(EXCP00_DIVZ); |
| 1682 |
q &= 0xffff;
|
| 1683 |
r = (num % den) & 0xffff;
|
| 1684 |
EAX = (EAX & ~0xffff) | q;
|
| 1685 |
EDX = (EDX & ~0xffff) | r;
|
| 1686 |
} |
| 1687 |
|
| 1688 |
void helper_idivw_AX(target_ulong t0)
|
| 1689 |
{
|
| 1690 |
int num, den, q, r;
|
| 1691 |
|
| 1692 |
num = (EAX & 0xffff) | ((EDX & 0xffff) << 16); |
| 1693 |
den = (int16_t)t0; |
| 1694 |
if (den == 0) { |
| 1695 |
raise_exception(EXCP00_DIVZ); |
| 1696 |
} |
| 1697 |
q = (num / den); |
| 1698 |
if (q != (int16_t)q)
|
| 1699 |
raise_exception(EXCP00_DIVZ); |
| 1700 |
q &= 0xffff;
|
| 1701 |
r = (num % den) & 0xffff;
|
| 1702 |
EAX = (EAX & ~0xffff) | q;
|
| 1703 |
EDX = (EDX & ~0xffff) | r;
|
| 1704 |
} |
| 1705 |
|
| 1706 |
void helper_divl_EAX(target_ulong t0)
|
| 1707 |
{
|
| 1708 |
unsigned int den, r; |
| 1709 |
uint64_t num, q; |
| 1710 |
|
| 1711 |
num = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
| 1712 |
den = t0; |
| 1713 |
if (den == 0) { |
| 1714 |
raise_exception(EXCP00_DIVZ); |
| 1715 |
} |
| 1716 |
q = (num / den); |
| 1717 |
r = (num % den); |
| 1718 |
if (q > 0xffffffff) |
| 1719 |
raise_exception(EXCP00_DIVZ); |
| 1720 |
EAX = (uint32_t)q; |
| 1721 |
EDX = (uint32_t)r; |
| 1722 |
} |
| 1723 |
|
| 1724 |
void helper_idivl_EAX(target_ulong t0)
|
| 1725 |
{
|
| 1726 |
int den, r;
|
| 1727 |
int64_t num, q; |
| 1728 |
|
| 1729 |
num = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
| 1730 |
den = t0; |
| 1731 |
if (den == 0) { |
| 1732 |
raise_exception(EXCP00_DIVZ); |
| 1733 |
} |
| 1734 |
q = (num / den); |
| 1735 |
r = (num % den); |
| 1736 |
if (q != (int32_t)q)
|
| 1737 |
raise_exception(EXCP00_DIVZ); |
| 1738 |
EAX = (uint32_t)q; |
| 1739 |
EDX = (uint32_t)r; |
| 1740 |
} |
| 1741 |
|
| 1742 |
/* bcd */
|
| 1743 |
|
| 1744 |
/* XXX: exception */
|
| 1745 |
void helper_aam(int base) |
| 1746 |
{
|
| 1747 |
int al, ah;
|
| 1748 |
al = EAX & 0xff;
|
| 1749 |
ah = al / base; |
| 1750 |
al = al % base; |
| 1751 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
| 1752 |
CC_DST = al; |
| 1753 |
} |
| 1754 |
|
| 1755 |
void helper_aad(int base) |
| 1756 |
{
|
| 1757 |
int al, ah;
|
| 1758 |
al = EAX & 0xff;
|
| 1759 |
ah = (EAX >> 8) & 0xff; |
| 1760 |
al = ((ah * base) + al) & 0xff;
|
| 1761 |
EAX = (EAX & ~0xffff) | al;
|
| 1762 |
CC_DST = al; |
| 1763 |
} |
| 1764 |
|
| 1765 |
void helper_aaa(void) |
| 1766 |
{
|
| 1767 |
int icarry;
|
| 1768 |
int al, ah, af;
|
| 1769 |
int eflags;
|
| 1770 |
|
| 1771 |
eflags = helper_cc_compute_all(CC_OP); |
| 1772 |
af = eflags & CC_A; |
| 1773 |
al = EAX & 0xff;
|
| 1774 |
ah = (EAX >> 8) & 0xff; |
| 1775 |
|
| 1776 |
icarry = (al > 0xf9);
|
| 1777 |
if (((al & 0x0f) > 9 ) || af) { |
| 1778 |
al = (al + 6) & 0x0f; |
| 1779 |
ah = (ah + 1 + icarry) & 0xff; |
| 1780 |
eflags |= CC_C | CC_A; |
| 1781 |
} else {
|
| 1782 |
eflags &= ~(CC_C | CC_A); |
| 1783 |
al &= 0x0f;
|
| 1784 |
} |
| 1785 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
| 1786 |
CC_SRC = eflags; |
| 1787 |
} |
| 1788 |
|
| 1789 |
void helper_aas(void) |
| 1790 |
{
|
| 1791 |
int icarry;
|
| 1792 |
int al, ah, af;
|
| 1793 |
int eflags;
|
| 1794 |
|
| 1795 |
eflags = helper_cc_compute_all(CC_OP); |
| 1796 |
af = eflags & CC_A; |
| 1797 |
al = EAX & 0xff;
|
| 1798 |
ah = (EAX >> 8) & 0xff; |
| 1799 |
|
| 1800 |
icarry = (al < 6);
|
| 1801 |
if (((al & 0x0f) > 9 ) || af) { |
| 1802 |
al = (al - 6) & 0x0f; |
| 1803 |
ah = (ah - 1 - icarry) & 0xff; |
| 1804 |
eflags |= CC_C | CC_A; |
| 1805 |
} else {
|
| 1806 |
eflags &= ~(CC_C | CC_A); |
| 1807 |
al &= 0x0f;
|
| 1808 |
} |
| 1809 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
| 1810 |
CC_SRC = eflags; |
| 1811 |
} |
| 1812 |
|
| 1813 |
void helper_daa(void) |
| 1814 |
{
|
| 1815 |
int al, af, cf;
|
| 1816 |
int eflags;
|
| 1817 |
|
| 1818 |
eflags = helper_cc_compute_all(CC_OP); |
| 1819 |
cf = eflags & CC_C; |
| 1820 |
af = eflags & CC_A; |
| 1821 |
al = EAX & 0xff;
|
| 1822 |
|
| 1823 |
eflags = 0;
|
| 1824 |
if (((al & 0x0f) > 9 ) || af) { |
| 1825 |
al = (al + 6) & 0xff; |
| 1826 |
eflags |= CC_A; |
| 1827 |
} |
| 1828 |
if ((al > 0x9f) || cf) { |
| 1829 |
al = (al + 0x60) & 0xff; |
| 1830 |
eflags |= CC_C; |
| 1831 |
} |
| 1832 |
EAX = (EAX & ~0xff) | al;
|
| 1833 |
/* well, speed is not an issue here, so we compute the flags by hand */
|
| 1834 |
eflags |= (al == 0) << 6; /* zf */ |
| 1835 |
eflags |= parity_table[al]; /* pf */
|
| 1836 |
eflags |= (al & 0x80); /* sf */ |
| 1837 |
CC_SRC = eflags; |
| 1838 |
} |
| 1839 |
|
| 1840 |
void helper_das(void) |
| 1841 |
{
|
| 1842 |
int al, al1, af, cf;
|
| 1843 |
int eflags;
|
| 1844 |
|
| 1845 |
eflags = helper_cc_compute_all(CC_OP); |
| 1846 |
cf = eflags & CC_C; |
| 1847 |
af = eflags & CC_A; |
| 1848 |
al = EAX & 0xff;
|
| 1849 |
|
| 1850 |
eflags = 0;
|
| 1851 |
al1 = al; |
| 1852 |
if (((al & 0x0f) > 9 ) || af) { |
| 1853 |
eflags |= CC_A; |
| 1854 |
if (al < 6 || cf) |
| 1855 |
eflags |= CC_C; |
| 1856 |
al = (al - 6) & 0xff; |
| 1857 |
} |
| 1858 |
if ((al1 > 0x99) || cf) { |
| 1859 |
al = (al - 0x60) & 0xff; |
| 1860 |
eflags |= CC_C; |
| 1861 |
} |
| 1862 |
EAX = (EAX & ~0xff) | al;
|
| 1863 |
/* well, speed is not an issue here, so we compute the flags by hand */
|
| 1864 |
eflags |= (al == 0) << 6; /* zf */ |
| 1865 |
eflags |= parity_table[al]; /* pf */
|
| 1866 |
eflags |= (al & 0x80); /* sf */ |
| 1867 |
CC_SRC = eflags; |
| 1868 |
} |
| 1869 |
|
| 1870 |
void helper_into(int next_eip_addend) |
| 1871 |
{
|
| 1872 |
int eflags;
|
| 1873 |
eflags = helper_cc_compute_all(CC_OP); |
| 1874 |
if (eflags & CC_O) {
|
| 1875 |
raise_interrupt(EXCP04_INTO, 1, 0, next_eip_addend); |
| 1876 |
} |
| 1877 |
} |
| 1878 |
|
| 1879 |
void helper_cmpxchg8b(target_ulong a0)
|
| 1880 |
{
|
| 1881 |
uint64_t d; |
| 1882 |
int eflags;
|
| 1883 |
|
| 1884 |
eflags = helper_cc_compute_all(CC_OP); |
| 1885 |
d = ldq(a0); |
| 1886 |
if (d == (((uint64_t)EDX << 32) | (uint32_t)EAX)) { |
| 1887 |
stq(a0, ((uint64_t)ECX << 32) | (uint32_t)EBX);
|
| 1888 |
eflags |= CC_Z; |
| 1889 |
} else {
|
| 1890 |
/* always do the store */
|
| 1891 |
stq(a0, d); |
| 1892 |
EDX = (uint32_t)(d >> 32);
|
| 1893 |
EAX = (uint32_t)d; |
| 1894 |
eflags &= ~CC_Z; |
| 1895 |
} |
| 1896 |
CC_SRC = eflags; |
| 1897 |
} |
| 1898 |
|
| 1899 |
#ifdef TARGET_X86_64
|
| 1900 |
void helper_cmpxchg16b(target_ulong a0)
|
| 1901 |
{
|
| 1902 |
uint64_t d0, d1; |
| 1903 |
int eflags;
|
| 1904 |
|
| 1905 |
if ((a0 & 0xf) != 0) |
| 1906 |
raise_exception(EXCP0D_GPF); |
| 1907 |
eflags = helper_cc_compute_all(CC_OP); |
| 1908 |
d0 = ldq(a0); |
| 1909 |
d1 = ldq(a0 + 8);
|
| 1910 |
if (d0 == EAX && d1 == EDX) {
|
| 1911 |
stq(a0, EBX); |
| 1912 |
stq(a0 + 8, ECX);
|
| 1913 |
eflags |= CC_Z; |
| 1914 |
} else {
|
| 1915 |
/* always do the store */
|
| 1916 |
stq(a0, d0); |
| 1917 |
stq(a0 + 8, d1);
|
| 1918 |
EDX = d1; |
| 1919 |
EAX = d0; |
| 1920 |
eflags &= ~CC_Z; |
| 1921 |
} |
| 1922 |
CC_SRC = eflags; |
| 1923 |
} |
| 1924 |
#endif
|
| 1925 |
|
| 1926 |
void helper_single_step(void) |
| 1927 |
{
|
| 1928 |
#ifndef CONFIG_USER_ONLY
|
| 1929 |
check_hw_breakpoints(env, 1);
|
| 1930 |
env->dr[6] |= DR6_BS;
|
| 1931 |
#endif
|
| 1932 |
raise_exception(EXCP01_DB); |
| 1933 |
} |
| 1934 |
|
| 1935 |
void helper_cpuid(void) |
| 1936 |
{
|
| 1937 |
uint32_t eax, ebx, ecx, edx; |
| 1938 |
|
| 1939 |
helper_svm_check_intercept_param(SVM_EXIT_CPUID, 0);
|
| 1940 |
|
| 1941 |
cpu_x86_cpuid(env, (uint32_t)EAX, (uint32_t)ECX, &eax, &ebx, &ecx, &edx); |
| 1942 |
EAX = eax; |
| 1943 |
EBX = ebx; |
| 1944 |
ECX = ecx; |
| 1945 |
EDX = edx; |
| 1946 |
} |
| 1947 |
|
| 1948 |
void helper_enter_level(int level, int data32, target_ulong t1) |
| 1949 |
{
|
| 1950 |
target_ulong ssp; |
| 1951 |
uint32_t esp_mask, esp, ebp; |
| 1952 |
|
| 1953 |
esp_mask = get_sp_mask(env->segs[R_SS].flags); |
| 1954 |
ssp = env->segs[R_SS].base; |
| 1955 |
ebp = EBP; |
| 1956 |
esp = ESP; |
| 1957 |
if (data32) {
|
| 1958 |
/* 32 bit */
|
| 1959 |
esp -= 4;
|
| 1960 |
while (--level) {
|
| 1961 |
esp -= 4;
|
| 1962 |
ebp -= 4;
|
| 1963 |
stl(ssp + (esp & esp_mask), ldl(ssp + (ebp & esp_mask))); |
| 1964 |
} |
| 1965 |
esp -= 4;
|
| 1966 |
stl(ssp + (esp & esp_mask), t1); |
| 1967 |
} else {
|
| 1968 |
/* 16 bit */
|
| 1969 |
esp -= 2;
|
| 1970 |
while (--level) {
|
| 1971 |
esp -= 2;
|
| 1972 |
ebp -= 2;
|
| 1973 |
stw(ssp + (esp & esp_mask), lduw(ssp + (ebp & esp_mask))); |
| 1974 |
} |
| 1975 |
esp -= 2;
|
| 1976 |
stw(ssp + (esp & esp_mask), t1); |
| 1977 |
} |
| 1978 |
} |
| 1979 |
|
| 1980 |
#ifdef TARGET_X86_64
|
| 1981 |
void helper_enter64_level(int level, int data64, target_ulong t1) |
| 1982 |
{
|
| 1983 |
target_ulong esp, ebp; |
| 1984 |
ebp = EBP; |
| 1985 |
esp = ESP; |
| 1986 |
|
| 1987 |
if (data64) {
|
| 1988 |
/* 64 bit */
|
| 1989 |
esp -= 8;
|
| 1990 |
while (--level) {
|
| 1991 |
esp -= 8;
|
| 1992 |
ebp -= 8;
|
| 1993 |
stq(esp, ldq(ebp)); |
| 1994 |
} |
| 1995 |
esp -= 8;
|
| 1996 |
stq(esp, t1); |
| 1997 |
} else {
|
| 1998 |
/* 16 bit */
|
| 1999 |
esp -= 2;
|
| 2000 |
while (--level) {
|
| 2001 |
esp -= 2;
|
| 2002 |
ebp -= 2;
|
| 2003 |
stw(esp, lduw(ebp)); |
| 2004 |
} |
| 2005 |
esp -= 2;
|
| 2006 |
stw(esp, t1); |
| 2007 |
} |
| 2008 |
} |
| 2009 |
#endif
|
| 2010 |
|
| 2011 |
void helper_lldt(int selector) |
| 2012 |
{
|
| 2013 |
SegmentCache *dt; |
| 2014 |
uint32_t e1, e2; |
| 2015 |
int index, entry_limit;
|
| 2016 |
target_ulong ptr; |
| 2017 |
|
| 2018 |
selector &= 0xffff;
|
| 2019 |
if ((selector & 0xfffc) == 0) { |
| 2020 |
/* XXX: NULL selector case: invalid LDT */
|
| 2021 |
env->ldt.base = 0;
|
| 2022 |
env->ldt.limit = 0;
|
| 2023 |
} else {
|
| 2024 |
if (selector & 0x4) |
| 2025 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2026 |
dt = &env->gdt; |
| 2027 |
index = selector & ~7;
|
| 2028 |
#ifdef TARGET_X86_64
|
| 2029 |
if (env->hflags & HF_LMA_MASK)
|
| 2030 |
entry_limit = 15;
|
| 2031 |
else
|
| 2032 |
#endif
|
| 2033 |
entry_limit = 7;
|
| 2034 |
if ((index + entry_limit) > dt->limit)
|
| 2035 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2036 |
ptr = dt->base + index; |
| 2037 |
e1 = ldl_kernel(ptr); |
| 2038 |
e2 = ldl_kernel(ptr + 4);
|
| 2039 |
if ((e2 & DESC_S_MASK) || ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2) |
| 2040 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2041 |
if (!(e2 & DESC_P_MASK))
|
| 2042 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
| 2043 |
#ifdef TARGET_X86_64
|
| 2044 |
if (env->hflags & HF_LMA_MASK) {
|
| 2045 |
uint32_t e3; |
| 2046 |
e3 = ldl_kernel(ptr + 8);
|
| 2047 |
load_seg_cache_raw_dt(&env->ldt, e1, e2); |
| 2048 |
env->ldt.base |= (target_ulong)e3 << 32;
|
| 2049 |
} else
|
| 2050 |
#endif
|
| 2051 |
{
|
| 2052 |
load_seg_cache_raw_dt(&env->ldt, e1, e2); |
| 2053 |
} |
| 2054 |
} |
| 2055 |
env->ldt.selector = selector; |
| 2056 |
} |
| 2057 |
|
| 2058 |
void helper_ltr(int selector) |
| 2059 |
{
|
| 2060 |
SegmentCache *dt; |
| 2061 |
uint32_t e1, e2; |
| 2062 |
int index, type, entry_limit;
|
| 2063 |
target_ulong ptr; |
| 2064 |
|
| 2065 |
selector &= 0xffff;
|
| 2066 |
if ((selector & 0xfffc) == 0) { |
| 2067 |
/* NULL selector case: invalid TR */
|
| 2068 |
env->tr.base = 0;
|
| 2069 |
env->tr.limit = 0;
|
| 2070 |
env->tr.flags = 0;
|
| 2071 |
} else {
|
| 2072 |
if (selector & 0x4) |
| 2073 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2074 |
dt = &env->gdt; |
| 2075 |
index = selector & ~7;
|
| 2076 |
#ifdef TARGET_X86_64
|
| 2077 |
if (env->hflags & HF_LMA_MASK)
|
| 2078 |
entry_limit = 15;
|
| 2079 |
else
|
| 2080 |
#endif
|
| 2081 |
entry_limit = 7;
|
| 2082 |
if ((index + entry_limit) > dt->limit)
|
| 2083 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2084 |
ptr = dt->base + index; |
| 2085 |
e1 = ldl_kernel(ptr); |
| 2086 |
e2 = ldl_kernel(ptr + 4);
|
| 2087 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
| 2088 |
if ((e2 & DESC_S_MASK) ||
|
| 2089 |
(type != 1 && type != 9)) |
| 2090 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2091 |
if (!(e2 & DESC_P_MASK))
|
| 2092 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
| 2093 |
#ifdef TARGET_X86_64
|
| 2094 |
if (env->hflags & HF_LMA_MASK) {
|
| 2095 |
uint32_t e3, e4; |
| 2096 |
e3 = ldl_kernel(ptr + 8);
|
| 2097 |
e4 = ldl_kernel(ptr + 12);
|
| 2098 |
if ((e4 >> DESC_TYPE_SHIFT) & 0xf) |
| 2099 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2100 |
load_seg_cache_raw_dt(&env->tr, e1, e2); |
| 2101 |
env->tr.base |= (target_ulong)e3 << 32;
|
| 2102 |
} else
|
| 2103 |
#endif
|
| 2104 |
{
|
| 2105 |
load_seg_cache_raw_dt(&env->tr, e1, e2); |
| 2106 |
} |
| 2107 |
e2 |= DESC_TSS_BUSY_MASK; |
| 2108 |
stl_kernel(ptr + 4, e2);
|
| 2109 |
} |
| 2110 |
env->tr.selector = selector; |
| 2111 |
} |
| 2112 |
|
| 2113 |
/* only works if protected mode and not VM86. seg_reg must be != R_CS */
|
| 2114 |
void helper_load_seg(int seg_reg, int selector) |
| 2115 |
{
|
| 2116 |
uint32_t e1, e2; |
| 2117 |
int cpl, dpl, rpl;
|
| 2118 |
SegmentCache *dt; |
| 2119 |
int index;
|
| 2120 |
target_ulong ptr; |
| 2121 |
|
| 2122 |
selector &= 0xffff;
|
| 2123 |
cpl = env->hflags & HF_CPL_MASK; |
| 2124 |
if ((selector & 0xfffc) == 0) { |
| 2125 |
/* null selector case */
|
| 2126 |
if (seg_reg == R_SS
|
| 2127 |
#ifdef TARGET_X86_64
|
| 2128 |
&& (!(env->hflags & HF_CS64_MASK) || cpl == 3)
|
| 2129 |
#endif
|
| 2130 |
) |
| 2131 |
raise_exception_err(EXCP0D_GPF, 0);
|
| 2132 |
cpu_x86_load_seg_cache(env, seg_reg, selector, 0, 0, 0); |
| 2133 |
} else {
|
| 2134 |
|
| 2135 |
if (selector & 0x4) |
| 2136 |
dt = &env->ldt; |
| 2137 |
else
|
| 2138 |
dt = &env->gdt; |
| 2139 |
index = selector & ~7;
|
| 2140 |
if ((index + 7) > dt->limit) |
| 2141 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2142 |
ptr = dt->base + index; |
| 2143 |
e1 = ldl_kernel(ptr); |
| 2144 |
e2 = ldl_kernel(ptr + 4);
|
| 2145 |
|
| 2146 |
if (!(e2 & DESC_S_MASK))
|
| 2147 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2148 |
rpl = selector & 3;
|
| 2149 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 2150 |
if (seg_reg == R_SS) {
|
| 2151 |
/* must be writable segment */
|
| 2152 |
if ((e2 & DESC_CS_MASK) || !(e2 & DESC_W_MASK))
|
| 2153 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2154 |
if (rpl != cpl || dpl != cpl)
|
| 2155 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2156 |
} else {
|
| 2157 |
/* must be readable segment */
|
| 2158 |
if ((e2 & (DESC_CS_MASK | DESC_R_MASK)) == DESC_CS_MASK)
|
| 2159 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2160 |
|
| 2161 |
if (!(e2 & DESC_CS_MASK) || !(e2 & DESC_C_MASK)) {
|
| 2162 |
/* if not conforming code, test rights */
|
| 2163 |
if (dpl < cpl || dpl < rpl)
|
| 2164 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2165 |
} |
| 2166 |
} |
| 2167 |
|
| 2168 |
if (!(e2 & DESC_P_MASK)) {
|
| 2169 |
if (seg_reg == R_SS)
|
| 2170 |
raise_exception_err(EXCP0C_STACK, selector & 0xfffc);
|
| 2171 |
else
|
| 2172 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
| 2173 |
} |
| 2174 |
|
| 2175 |
/* set the access bit if not already set */
|
| 2176 |
if (!(e2 & DESC_A_MASK)) {
|
| 2177 |
e2 |= DESC_A_MASK; |
| 2178 |
stl_kernel(ptr + 4, e2);
|
| 2179 |
} |
| 2180 |
|
| 2181 |
cpu_x86_load_seg_cache(env, seg_reg, selector, |
| 2182 |
get_seg_base(e1, e2), |
| 2183 |
get_seg_limit(e1, e2), |
| 2184 |
e2); |
| 2185 |
#if 0
|
| 2186 |
qemu_log("load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx flags=%08x\n",
|
| 2187 |
selector, (unsigned long)sc->base, sc->limit, sc->flags);
|
| 2188 |
#endif
|
| 2189 |
} |
| 2190 |
} |
| 2191 |
|
| 2192 |
/* protected mode jump */
|
| 2193 |
void helper_ljmp_protected(int new_cs, target_ulong new_eip, |
| 2194 |
int next_eip_addend)
|
| 2195 |
{
|
| 2196 |
int gate_cs, type;
|
| 2197 |
uint32_t e1, e2, cpl, dpl, rpl, limit; |
| 2198 |
target_ulong next_eip; |
| 2199 |
|
| 2200 |
if ((new_cs & 0xfffc) == 0) |
| 2201 |
raise_exception_err(EXCP0D_GPF, 0);
|
| 2202 |
if (load_segment(&e1, &e2, new_cs) != 0) |
| 2203 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2204 |
cpl = env->hflags & HF_CPL_MASK; |
| 2205 |
if (e2 & DESC_S_MASK) {
|
| 2206 |
if (!(e2 & DESC_CS_MASK))
|
| 2207 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2208 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 2209 |
if (e2 & DESC_C_MASK) {
|
| 2210 |
/* conforming code segment */
|
| 2211 |
if (dpl > cpl)
|
| 2212 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2213 |
} else {
|
| 2214 |
/* non conforming code segment */
|
| 2215 |
rpl = new_cs & 3;
|
| 2216 |
if (rpl > cpl)
|
| 2217 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2218 |
if (dpl != cpl)
|
| 2219 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2220 |
} |
| 2221 |
if (!(e2 & DESC_P_MASK))
|
| 2222 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
| 2223 |
limit = get_seg_limit(e1, e2); |
| 2224 |
if (new_eip > limit &&
|
| 2225 |
!(env->hflags & HF_LMA_MASK) && !(e2 & DESC_L_MASK)) |
| 2226 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2227 |
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
| 2228 |
get_seg_base(e1, e2), limit, e2); |
| 2229 |
EIP = new_eip; |
| 2230 |
} else {
|
| 2231 |
/* jump to call or task gate */
|
| 2232 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 2233 |
rpl = new_cs & 3;
|
| 2234 |
cpl = env->hflags & HF_CPL_MASK; |
| 2235 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
| 2236 |
switch(type) {
|
| 2237 |
case 1: /* 286 TSS */ |
| 2238 |
case 9: /* 386 TSS */ |
| 2239 |
case 5: /* task gate */ |
| 2240 |
if (dpl < cpl || dpl < rpl)
|
| 2241 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2242 |
next_eip = env->eip + next_eip_addend; |
| 2243 |
switch_tss(new_cs, e1, e2, SWITCH_TSS_JMP, next_eip); |
| 2244 |
CC_OP = CC_OP_EFLAGS; |
| 2245 |
break;
|
| 2246 |
case 4: /* 286 call gate */ |
| 2247 |
case 12: /* 386 call gate */ |
| 2248 |
if ((dpl < cpl) || (dpl < rpl))
|
| 2249 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2250 |
if (!(e2 & DESC_P_MASK))
|
| 2251 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
| 2252 |
gate_cs = e1 >> 16;
|
| 2253 |
new_eip = (e1 & 0xffff);
|
| 2254 |
if (type == 12) |
| 2255 |
new_eip |= (e2 & 0xffff0000);
|
| 2256 |
if (load_segment(&e1, &e2, gate_cs) != 0) |
| 2257 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
| 2258 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 2259 |
/* must be code segment */
|
| 2260 |
if (((e2 & (DESC_S_MASK | DESC_CS_MASK)) !=
|
| 2261 |
(DESC_S_MASK | DESC_CS_MASK))) |
| 2262 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
| 2263 |
if (((e2 & DESC_C_MASK) && (dpl > cpl)) ||
|
| 2264 |
(!(e2 & DESC_C_MASK) && (dpl != cpl))) |
| 2265 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
| 2266 |
if (!(e2 & DESC_P_MASK))
|
| 2267 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
| 2268 |
limit = get_seg_limit(e1, e2); |
| 2269 |
if (new_eip > limit)
|
| 2270 |
raise_exception_err(EXCP0D_GPF, 0);
|
| 2271 |
cpu_x86_load_seg_cache(env, R_CS, (gate_cs & 0xfffc) | cpl,
|
| 2272 |
get_seg_base(e1, e2), limit, e2); |
| 2273 |
EIP = new_eip; |
| 2274 |
break;
|
| 2275 |
default:
|
| 2276 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2277 |
break;
|
| 2278 |
} |
| 2279 |
} |
| 2280 |
} |
| 2281 |
|
| 2282 |
/* real mode call */
|
| 2283 |
void helper_lcall_real(int new_cs, target_ulong new_eip1, |
| 2284 |
int shift, int next_eip) |
| 2285 |
{
|
| 2286 |
int new_eip;
|
| 2287 |
uint32_t esp, esp_mask; |
| 2288 |
target_ulong ssp; |
| 2289 |
|
| 2290 |
new_eip = new_eip1; |
| 2291 |
esp = ESP; |
| 2292 |
esp_mask = get_sp_mask(env->segs[R_SS].flags); |
| 2293 |
ssp = env->segs[R_SS].base; |
| 2294 |
if (shift) {
|
| 2295 |
PUSHL(ssp, esp, esp_mask, env->segs[R_CS].selector); |
| 2296 |
PUSHL(ssp, esp, esp_mask, next_eip); |
| 2297 |
} else {
|
| 2298 |
PUSHW(ssp, esp, esp_mask, env->segs[R_CS].selector); |
| 2299 |
PUSHW(ssp, esp, esp_mask, next_eip); |
| 2300 |
} |
| 2301 |
|
| 2302 |
SET_ESP(esp, esp_mask); |
| 2303 |
env->eip = new_eip; |
| 2304 |
env->segs[R_CS].selector = new_cs; |
| 2305 |
env->segs[R_CS].base = (new_cs << 4);
|
| 2306 |
} |
| 2307 |
|
| 2308 |
/* protected mode call */
|
| 2309 |
void helper_lcall_protected(int new_cs, target_ulong new_eip, |
| 2310 |
int shift, int next_eip_addend) |
| 2311 |
{
|
| 2312 |
int new_stack, i;
|
| 2313 |
uint32_t e1, e2, cpl, dpl, rpl, selector, offset, param_count; |
| 2314 |
uint32_t ss = 0, ss_e1 = 0, ss_e2 = 0, sp, type, ss_dpl, sp_mask; |
| 2315 |
uint32_t val, limit, old_sp_mask; |
| 2316 |
target_ulong ssp, old_ssp, next_eip; |
| 2317 |
|
| 2318 |
next_eip = env->eip + next_eip_addend; |
| 2319 |
LOG_PCALL("lcall %04x:%08x s=%d\n", new_cs, (uint32_t)new_eip, shift);
|
| 2320 |
LOG_PCALL_STATE(env); |
| 2321 |
if ((new_cs & 0xfffc) == 0) |
| 2322 |
raise_exception_err(EXCP0D_GPF, 0);
|
| 2323 |
if (load_segment(&e1, &e2, new_cs) != 0) |
| 2324 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2325 |
cpl = env->hflags & HF_CPL_MASK; |
| 2326 |
LOG_PCALL("desc=%08x:%08x\n", e1, e2);
|
| 2327 |
if (e2 & DESC_S_MASK) {
|
| 2328 |
if (!(e2 & DESC_CS_MASK))
|
| 2329 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2330 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 2331 |
if (e2 & DESC_C_MASK) {
|
| 2332 |
/* conforming code segment */
|
| 2333 |
if (dpl > cpl)
|
| 2334 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2335 |
} else {
|
| 2336 |
/* non conforming code segment */
|
| 2337 |
rpl = new_cs & 3;
|
| 2338 |
if (rpl > cpl)
|
| 2339 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2340 |
if (dpl != cpl)
|
| 2341 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2342 |
} |
| 2343 |
if (!(e2 & DESC_P_MASK))
|
| 2344 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
| 2345 |
|
| 2346 |
#ifdef TARGET_X86_64
|
| 2347 |
/* XXX: check 16/32 bit cases in long mode */
|
| 2348 |
if (shift == 2) { |
| 2349 |
target_ulong rsp; |
| 2350 |
/* 64 bit case */
|
| 2351 |
rsp = ESP; |
| 2352 |
PUSHQ(rsp, env->segs[R_CS].selector); |
| 2353 |
PUSHQ(rsp, next_eip); |
| 2354 |
/* from this point, not restartable */
|
| 2355 |
ESP = rsp; |
| 2356 |
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
| 2357 |
get_seg_base(e1, e2), |
| 2358 |
get_seg_limit(e1, e2), e2); |
| 2359 |
EIP = new_eip; |
| 2360 |
} else
|
| 2361 |
#endif
|
| 2362 |
{
|
| 2363 |
sp = ESP; |
| 2364 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
| 2365 |
ssp = env->segs[R_SS].base; |
| 2366 |
if (shift) {
|
| 2367 |
PUSHL(ssp, sp, sp_mask, env->segs[R_CS].selector); |
| 2368 |
PUSHL(ssp, sp, sp_mask, next_eip); |
| 2369 |
} else {
|
| 2370 |
PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector); |
| 2371 |
PUSHW(ssp, sp, sp_mask, next_eip); |
| 2372 |
} |
| 2373 |
|
| 2374 |
limit = get_seg_limit(e1, e2); |
| 2375 |
if (new_eip > limit)
|
| 2376 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2377 |
/* from this point, not restartable */
|
| 2378 |
SET_ESP(sp, sp_mask); |
| 2379 |
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
| 2380 |
get_seg_base(e1, e2), limit, e2); |
| 2381 |
EIP = new_eip; |
| 2382 |
} |
| 2383 |
} else {
|
| 2384 |
/* check gate type */
|
| 2385 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
| 2386 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 2387 |
rpl = new_cs & 3;
|
| 2388 |
switch(type) {
|
| 2389 |
case 1: /* available 286 TSS */ |
| 2390 |
case 9: /* available 386 TSS */ |
| 2391 |
case 5: /* task gate */ |
| 2392 |
if (dpl < cpl || dpl < rpl)
|
| 2393 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2394 |
switch_tss(new_cs, e1, e2, SWITCH_TSS_CALL, next_eip); |
| 2395 |
CC_OP = CC_OP_EFLAGS; |
| 2396 |
return;
|
| 2397 |
case 4: /* 286 call gate */ |
| 2398 |
case 12: /* 386 call gate */ |
| 2399 |
break;
|
| 2400 |
default:
|
| 2401 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2402 |
break;
|
| 2403 |
} |
| 2404 |
shift = type >> 3;
|
| 2405 |
|
| 2406 |
if (dpl < cpl || dpl < rpl)
|
| 2407 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2408 |
/* check valid bit */
|
| 2409 |
if (!(e2 & DESC_P_MASK))
|
| 2410 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
| 2411 |
selector = e1 >> 16;
|
| 2412 |
offset = (e2 & 0xffff0000) | (e1 & 0x0000ffff); |
| 2413 |
param_count = e2 & 0x1f;
|
| 2414 |
if ((selector & 0xfffc) == 0) |
| 2415 |
raise_exception_err(EXCP0D_GPF, 0);
|
| 2416 |
|
| 2417 |
if (load_segment(&e1, &e2, selector) != 0) |
| 2418 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2419 |
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
| 2420 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2421 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 2422 |
if (dpl > cpl)
|
| 2423 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 2424 |
if (!(e2 & DESC_P_MASK))
|
| 2425 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
| 2426 |
|
| 2427 |
if (!(e2 & DESC_C_MASK) && dpl < cpl) {
|
| 2428 |
/* to inner privilege */
|
| 2429 |
get_ss_esp_from_tss(&ss, &sp, dpl); |
| 2430 |
LOG_PCALL("new ss:esp=%04x:%08x param_count=%d ESP=" TARGET_FMT_lx "\n", |
| 2431 |
ss, sp, param_count, ESP); |
| 2432 |
if ((ss & 0xfffc) == 0) |
| 2433 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
| 2434 |
if ((ss & 3) != dpl) |
| 2435 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
| 2436 |
if (load_segment(&ss_e1, &ss_e2, ss) != 0) |
| 2437 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
| 2438 |
ss_dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
| 2439 |
if (ss_dpl != dpl)
|
| 2440 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
| 2441 |
if (!(ss_e2 & DESC_S_MASK) ||
|
| 2442 |
(ss_e2 & DESC_CS_MASK) || |
| 2443 |
!(ss_e2 & DESC_W_MASK)) |
| 2444 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
| 2445 |
if (!(ss_e2 & DESC_P_MASK))
|
| 2446 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
| 2447 |
|
| 2448 |
// push_size = ((param_count * 2) + 8) << shift;
|
| 2449 |
|
| 2450 |
old_sp_mask = get_sp_mask(env->segs[R_SS].flags); |
| 2451 |
old_ssp = env->segs[R_SS].base; |
| 2452 |
|
| 2453 |
sp_mask = get_sp_mask(ss_e2); |
| 2454 |
ssp = get_seg_base(ss_e1, ss_e2); |
| 2455 |
if (shift) {
|
| 2456 |
PUSHL(ssp, sp, sp_mask, env->segs[R_SS].selector); |
| 2457 |
PUSHL(ssp, sp, sp_mask, ESP); |
| 2458 |
for(i = param_count - 1; i >= 0; i--) { |
| 2459 |
val = ldl_kernel(old_ssp + ((ESP + i * 4) & old_sp_mask));
|
| 2460 |
PUSHL(ssp, sp, sp_mask, val); |
| 2461 |
} |
| 2462 |
} else {
|
| 2463 |
PUSHW(ssp, sp, sp_mask, env->segs[R_SS].selector); |
| 2464 |
PUSHW(ssp, sp, sp_mask, ESP); |
| 2465 |
for(i = param_count - 1; i >= 0; i--) { |
| 2466 |
val = lduw_kernel(old_ssp + ((ESP + i * 2) & old_sp_mask));
|
| 2467 |
PUSHW(ssp, sp, sp_mask, val); |
| 2468 |
} |
| 2469 |
} |
| 2470 |
new_stack = 1;
|
| 2471 |
} else {
|
| 2472 |
/* to same privilege */
|
| 2473 |
sp = ESP; |
| 2474 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
| 2475 |
ssp = env->segs[R_SS].base; |
| 2476 |
// push_size = (4 << shift);
|
| 2477 |
new_stack = 0;
|
| 2478 |
} |
| 2479 |
|
| 2480 |
if (shift) {
|
| 2481 |
PUSHL(ssp, sp, sp_mask, env->segs[R_CS].selector); |
| 2482 |
PUSHL(ssp, sp, sp_mask, next_eip); |
| 2483 |
} else {
|
| 2484 |
PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector); |
| 2485 |
PUSHW(ssp, sp, sp_mask, next_eip); |
| 2486 |
} |
| 2487 |
|
| 2488 |
/* from this point, not restartable */
|
| 2489 |
|
| 2490 |
if (new_stack) {
|
| 2491 |
ss = (ss & ~3) | dpl;
|
| 2492 |
cpu_x86_load_seg_cache(env, R_SS, ss, |
| 2493 |
ssp, |
| 2494 |
get_seg_limit(ss_e1, ss_e2), |
| 2495 |
ss_e2); |
| 2496 |
} |
| 2497 |
|
| 2498 |
selector = (selector & ~3) | dpl;
|
| 2499 |
cpu_x86_load_seg_cache(env, R_CS, selector, |
| 2500 |
get_seg_base(e1, e2), |
| 2501 |
get_seg_limit(e1, e2), |
| 2502 |
e2); |
| 2503 |
cpu_x86_set_cpl(env, dpl); |
| 2504 |
SET_ESP(sp, sp_mask); |
| 2505 |
EIP = offset; |
| 2506 |
} |
| 2507 |
} |
| 2508 |
|
| 2509 |
/* real and vm86 mode iret */
|
| 2510 |
void helper_iret_real(int shift) |
| 2511 |
{
|
| 2512 |
uint32_t sp, new_cs, new_eip, new_eflags, sp_mask; |
| 2513 |
target_ulong ssp; |
| 2514 |
int eflags_mask;
|
| 2515 |
|
| 2516 |
sp_mask = 0xffff; /* XXXX: use SS segment size ? */ |
| 2517 |
sp = ESP; |
| 2518 |
ssp = env->segs[R_SS].base; |
| 2519 |
if (shift == 1) { |
| 2520 |
/* 32 bits */
|
| 2521 |
POPL(ssp, sp, sp_mask, new_eip); |
| 2522 |
POPL(ssp, sp, sp_mask, new_cs); |
| 2523 |
new_cs &= 0xffff;
|
| 2524 |
POPL(ssp, sp, sp_mask, new_eflags); |
| 2525 |
} else {
|
| 2526 |
/* 16 bits */
|
| 2527 |
POPW(ssp, sp, sp_mask, new_eip); |
| 2528 |
POPW(ssp, sp, sp_mask, new_cs); |
| 2529 |
POPW(ssp, sp, sp_mask, new_eflags); |
| 2530 |
} |
| 2531 |
ESP = (ESP & ~sp_mask) | (sp & sp_mask); |
| 2532 |
env->segs[R_CS].selector = new_cs; |
| 2533 |
env->segs[R_CS].base = (new_cs << 4);
|
| 2534 |
env->eip = new_eip; |
| 2535 |
if (env->eflags & VM_MASK)
|
| 2536 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | RF_MASK | NT_MASK; |
| 2537 |
else
|
| 2538 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | IOPL_MASK | RF_MASK | NT_MASK; |
| 2539 |
if (shift == 0) |
| 2540 |
eflags_mask &= 0xffff;
|
| 2541 |
load_eflags(new_eflags, eflags_mask); |
| 2542 |
env->hflags2 &= ~HF2_NMI_MASK; |
| 2543 |
} |
| 2544 |
|
| 2545 |
static inline void validate_seg(int seg_reg, int cpl) |
| 2546 |
{
|
| 2547 |
int dpl;
|
| 2548 |
uint32_t e2; |
| 2549 |
|
| 2550 |
/* XXX: on x86_64, we do not want to nullify FS and GS because
|
| 2551 |
they may still contain a valid base. I would be interested to
|
| 2552 |
know how a real x86_64 CPU behaves */
|
| 2553 |
if ((seg_reg == R_FS || seg_reg == R_GS) &&
|
| 2554 |
(env->segs[seg_reg].selector & 0xfffc) == 0) |
| 2555 |
return;
|
| 2556 |
|
| 2557 |
e2 = env->segs[seg_reg].flags; |
| 2558 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 2559 |
if (!(e2 & DESC_CS_MASK) || !(e2 & DESC_C_MASK)) {
|
| 2560 |
/* data or non conforming code segment */
|
| 2561 |
if (dpl < cpl) {
|
| 2562 |
cpu_x86_load_seg_cache(env, seg_reg, 0, 0, 0, 0); |
| 2563 |
} |
| 2564 |
} |
| 2565 |
} |
| 2566 |
|
| 2567 |
/* protected mode iret */
|
| 2568 |
static inline void helper_ret_protected(int shift, int is_iret, int addend) |
| 2569 |
{
|
| 2570 |
uint32_t new_cs, new_eflags, new_ss; |
| 2571 |
uint32_t new_es, new_ds, new_fs, new_gs; |
| 2572 |
uint32_t e1, e2, ss_e1, ss_e2; |
| 2573 |
int cpl, dpl, rpl, eflags_mask, iopl;
|
| 2574 |
target_ulong ssp, sp, new_eip, new_esp, sp_mask; |
| 2575 |
|
| 2576 |
#ifdef TARGET_X86_64
|
| 2577 |
if (shift == 2) |
| 2578 |
sp_mask = -1;
|
| 2579 |
else
|
| 2580 |
#endif
|
| 2581 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
| 2582 |
sp = ESP; |
| 2583 |
ssp = env->segs[R_SS].base; |
| 2584 |
new_eflags = 0; /* avoid warning */ |
| 2585 |
#ifdef TARGET_X86_64
|
| 2586 |
if (shift == 2) { |
| 2587 |
POPQ(sp, new_eip); |
| 2588 |
POPQ(sp, new_cs); |
| 2589 |
new_cs &= 0xffff;
|
| 2590 |
if (is_iret) {
|
| 2591 |
POPQ(sp, new_eflags); |
| 2592 |
} |
| 2593 |
} else
|
| 2594 |
#endif
|
| 2595 |
if (shift == 1) { |
| 2596 |
/* 32 bits */
|
| 2597 |
POPL(ssp, sp, sp_mask, new_eip); |
| 2598 |
POPL(ssp, sp, sp_mask, new_cs); |
| 2599 |
new_cs &= 0xffff;
|
| 2600 |
if (is_iret) {
|
| 2601 |
POPL(ssp, sp, sp_mask, new_eflags); |
| 2602 |
if (new_eflags & VM_MASK)
|
| 2603 |
goto return_to_vm86;
|
| 2604 |
} |
| 2605 |
} else {
|
| 2606 |
/* 16 bits */
|
| 2607 |
POPW(ssp, sp, sp_mask, new_eip); |
| 2608 |
POPW(ssp, sp, sp_mask, new_cs); |
| 2609 |
if (is_iret)
|
| 2610 |
POPW(ssp, sp, sp_mask, new_eflags); |
| 2611 |
} |
| 2612 |
LOG_PCALL("lret new %04x:" TARGET_FMT_lx " s=%d addend=0x%x\n", |
| 2613 |
new_cs, new_eip, shift, addend); |
| 2614 |
LOG_PCALL_STATE(env); |
| 2615 |
if ((new_cs & 0xfffc) == 0) |
| 2616 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2617 |
if (load_segment(&e1, &e2, new_cs) != 0) |
| 2618 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2619 |
if (!(e2 & DESC_S_MASK) ||
|
| 2620 |
!(e2 & DESC_CS_MASK)) |
| 2621 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2622 |
cpl = env->hflags & HF_CPL_MASK; |
| 2623 |
rpl = new_cs & 3;
|
| 2624 |
if (rpl < cpl)
|
| 2625 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2626 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 2627 |
if (e2 & DESC_C_MASK) {
|
| 2628 |
if (dpl > rpl)
|
| 2629 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2630 |
} else {
|
| 2631 |
if (dpl != rpl)
|
| 2632 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
| 2633 |
} |
| 2634 |
if (!(e2 & DESC_P_MASK))
|
| 2635 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
| 2636 |
|
| 2637 |
sp += addend; |
| 2638 |
if (rpl == cpl && (!(env->hflags & HF_CS64_MASK) ||
|
| 2639 |
((env->hflags & HF_CS64_MASK) && !is_iret))) {
|
| 2640 |
/* return to same privilege level */
|
| 2641 |
cpu_x86_load_seg_cache(env, R_CS, new_cs, |
| 2642 |
get_seg_base(e1, e2), |
| 2643 |
get_seg_limit(e1, e2), |
| 2644 |
e2); |
| 2645 |
} else {
|
| 2646 |
/* return to different privilege level */
|
| 2647 |
#ifdef TARGET_X86_64
|
| 2648 |
if (shift == 2) { |
| 2649 |
POPQ(sp, new_esp); |
| 2650 |
POPQ(sp, new_ss); |
| 2651 |
new_ss &= 0xffff;
|
| 2652 |
} else
|
| 2653 |
#endif
|
| 2654 |
if (shift == 1) { |
| 2655 |
/* 32 bits */
|
| 2656 |
POPL(ssp, sp, sp_mask, new_esp); |
| 2657 |
POPL(ssp, sp, sp_mask, new_ss); |
| 2658 |
new_ss &= 0xffff;
|
| 2659 |
} else {
|
| 2660 |
/* 16 bits */
|
| 2661 |
POPW(ssp, sp, sp_mask, new_esp); |
| 2662 |
POPW(ssp, sp, sp_mask, new_ss); |
| 2663 |
} |
| 2664 |
LOG_PCALL("new ss:esp=%04x:" TARGET_FMT_lx "\n", |
| 2665 |
new_ss, new_esp); |
| 2666 |
if ((new_ss & 0xfffc) == 0) { |
| 2667 |
#ifdef TARGET_X86_64
|
| 2668 |
/* NULL ss is allowed in long mode if cpl != 3*/
|
| 2669 |
/* XXX: test CS64 ? */
|
| 2670 |
if ((env->hflags & HF_LMA_MASK) && rpl != 3) { |
| 2671 |
cpu_x86_load_seg_cache(env, R_SS, new_ss, |
| 2672 |
0, 0xffffffff, |
| 2673 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 2674 |
DESC_S_MASK | (rpl << DESC_DPL_SHIFT) | |
| 2675 |
DESC_W_MASK | DESC_A_MASK); |
| 2676 |
ss_e2 = DESC_B_MASK; /* XXX: should not be needed ? */
|
| 2677 |
} else
|
| 2678 |
#endif
|
| 2679 |
{
|
| 2680 |
raise_exception_err(EXCP0D_GPF, 0);
|
| 2681 |
} |
| 2682 |
} else {
|
| 2683 |
if ((new_ss & 3) != rpl) |
| 2684 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
| 2685 |
if (load_segment(&ss_e1, &ss_e2, new_ss) != 0) |
| 2686 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
| 2687 |
if (!(ss_e2 & DESC_S_MASK) ||
|
| 2688 |
(ss_e2 & DESC_CS_MASK) || |
| 2689 |
!(ss_e2 & DESC_W_MASK)) |
| 2690 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
| 2691 |
dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
| 2692 |
if (dpl != rpl)
|
| 2693 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
| 2694 |
if (!(ss_e2 & DESC_P_MASK))
|
| 2695 |
raise_exception_err(EXCP0B_NOSEG, new_ss & 0xfffc);
|
| 2696 |
cpu_x86_load_seg_cache(env, R_SS, new_ss, |
| 2697 |
get_seg_base(ss_e1, ss_e2), |
| 2698 |
get_seg_limit(ss_e1, ss_e2), |
| 2699 |
ss_e2); |
| 2700 |
} |
| 2701 |
|
| 2702 |
cpu_x86_load_seg_cache(env, R_CS, new_cs, |
| 2703 |
get_seg_base(e1, e2), |
| 2704 |
get_seg_limit(e1, e2), |
| 2705 |
e2); |
| 2706 |
cpu_x86_set_cpl(env, rpl); |
| 2707 |
sp = new_esp; |
| 2708 |
#ifdef TARGET_X86_64
|
| 2709 |
if (env->hflags & HF_CS64_MASK)
|
| 2710 |
sp_mask = -1;
|
| 2711 |
else
|
| 2712 |
#endif
|
| 2713 |
sp_mask = get_sp_mask(ss_e2); |
| 2714 |
|
| 2715 |
/* validate data segments */
|
| 2716 |
validate_seg(R_ES, rpl); |
| 2717 |
validate_seg(R_DS, rpl); |
| 2718 |
validate_seg(R_FS, rpl); |
| 2719 |
validate_seg(R_GS, rpl); |
| 2720 |
|
| 2721 |
sp += addend; |
| 2722 |
} |
| 2723 |
SET_ESP(sp, sp_mask); |
| 2724 |
env->eip = new_eip; |
| 2725 |
if (is_iret) {
|
| 2726 |
/* NOTE: 'cpl' is the _old_ CPL */
|
| 2727 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | RF_MASK | NT_MASK; |
| 2728 |
if (cpl == 0) |
| 2729 |
eflags_mask |= IOPL_MASK; |
| 2730 |
iopl = (env->eflags >> IOPL_SHIFT) & 3;
|
| 2731 |
if (cpl <= iopl)
|
| 2732 |
eflags_mask |= IF_MASK; |
| 2733 |
if (shift == 0) |
| 2734 |
eflags_mask &= 0xffff;
|
| 2735 |
load_eflags(new_eflags, eflags_mask); |
| 2736 |
} |
| 2737 |
return;
|
| 2738 |
|
| 2739 |
return_to_vm86:
|
| 2740 |
POPL(ssp, sp, sp_mask, new_esp); |
| 2741 |
POPL(ssp, sp, sp_mask, new_ss); |
| 2742 |
POPL(ssp, sp, sp_mask, new_es); |
| 2743 |
POPL(ssp, sp, sp_mask, new_ds); |
| 2744 |
POPL(ssp, sp, sp_mask, new_fs); |
| 2745 |
POPL(ssp, sp, sp_mask, new_gs); |
| 2746 |
|
| 2747 |
/* modify processor state */
|
| 2748 |
load_eflags(new_eflags, TF_MASK | AC_MASK | ID_MASK | |
| 2749 |
IF_MASK | IOPL_MASK | VM_MASK | NT_MASK | VIF_MASK | VIP_MASK); |
| 2750 |
load_seg_vm(R_CS, new_cs & 0xffff);
|
| 2751 |
cpu_x86_set_cpl(env, 3);
|
| 2752 |
load_seg_vm(R_SS, new_ss & 0xffff);
|
| 2753 |
load_seg_vm(R_ES, new_es & 0xffff);
|
| 2754 |
load_seg_vm(R_DS, new_ds & 0xffff);
|
| 2755 |
load_seg_vm(R_FS, new_fs & 0xffff);
|
| 2756 |
load_seg_vm(R_GS, new_gs & 0xffff);
|
| 2757 |
|
| 2758 |
env->eip = new_eip & 0xffff;
|
| 2759 |
ESP = new_esp; |
| 2760 |
} |
| 2761 |
|
| 2762 |
void helper_iret_protected(int shift, int next_eip) |
| 2763 |
{
|
| 2764 |
int tss_selector, type;
|
| 2765 |
uint32_t e1, e2; |
| 2766 |
|
| 2767 |
/* specific case for TSS */
|
| 2768 |
if (env->eflags & NT_MASK) {
|
| 2769 |
#ifdef TARGET_X86_64
|
| 2770 |
if (env->hflags & HF_LMA_MASK)
|
| 2771 |
raise_exception_err(EXCP0D_GPF, 0);
|
| 2772 |
#endif
|
| 2773 |
tss_selector = lduw_kernel(env->tr.base + 0);
|
| 2774 |
if (tss_selector & 4) |
| 2775 |
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
| 2776 |
if (load_segment(&e1, &e2, tss_selector) != 0) |
| 2777 |
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
| 2778 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x17;
|
| 2779 |
/* NOTE: we check both segment and busy TSS */
|
| 2780 |
if (type != 3) |
| 2781 |
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
| 2782 |
switch_tss(tss_selector, e1, e2, SWITCH_TSS_IRET, next_eip); |
| 2783 |
} else {
|
| 2784 |
helper_ret_protected(shift, 1, 0); |
| 2785 |
} |
| 2786 |
env->hflags2 &= ~HF2_NMI_MASK; |
| 2787 |
} |
| 2788 |
|
| 2789 |
void helper_lret_protected(int shift, int addend) |
| 2790 |
{
|
| 2791 |
helper_ret_protected(shift, 0, addend);
|
| 2792 |
} |
| 2793 |
|
| 2794 |
void helper_sysenter(void) |
| 2795 |
{
|
| 2796 |
if (env->sysenter_cs == 0) { |
| 2797 |
raise_exception_err(EXCP0D_GPF, 0);
|
| 2798 |
} |
| 2799 |
env->eflags &= ~(VM_MASK | IF_MASK | RF_MASK); |
| 2800 |
cpu_x86_set_cpl(env, 0);
|
| 2801 |
|
| 2802 |
#ifdef TARGET_X86_64
|
| 2803 |
if (env->hflags & HF_LMA_MASK) {
|
| 2804 |
cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 0xfffc,
|
| 2805 |
0, 0xffffffff, |
| 2806 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 2807 |
DESC_S_MASK | |
| 2808 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK); |
| 2809 |
} else
|
| 2810 |
#endif
|
| 2811 |
{
|
| 2812 |
cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 0xfffc,
|
| 2813 |
0, 0xffffffff, |
| 2814 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 2815 |
DESC_S_MASK | |
| 2816 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
| 2817 |
} |
| 2818 |
cpu_x86_load_seg_cache(env, R_SS, (env->sysenter_cs + 8) & 0xfffc, |
| 2819 |
0, 0xffffffff, |
| 2820 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 2821 |
DESC_S_MASK | |
| 2822 |
DESC_W_MASK | DESC_A_MASK); |
| 2823 |
ESP = env->sysenter_esp; |
| 2824 |
EIP = env->sysenter_eip; |
| 2825 |
} |
| 2826 |
|
| 2827 |
void helper_sysexit(int dflag) |
| 2828 |
{
|
| 2829 |
int cpl;
|
| 2830 |
|
| 2831 |
cpl = env->hflags & HF_CPL_MASK; |
| 2832 |
if (env->sysenter_cs == 0 || cpl != 0) { |
| 2833 |
raise_exception_err(EXCP0D_GPF, 0);
|
| 2834 |
} |
| 2835 |
cpu_x86_set_cpl(env, 3);
|
| 2836 |
#ifdef TARGET_X86_64
|
| 2837 |
if (dflag == 2) { |
| 2838 |
cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 32) & 0xfffc) | 3, |
| 2839 |
0, 0xffffffff, |
| 2840 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 2841 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
| 2842 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK); |
| 2843 |
cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 40) & 0xfffc) | 3, |
| 2844 |
0, 0xffffffff, |
| 2845 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 2846 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
| 2847 |
DESC_W_MASK | DESC_A_MASK); |
| 2848 |
} else
|
| 2849 |
#endif
|
| 2850 |
{
|
| 2851 |
cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 16) & 0xfffc) | 3, |
| 2852 |
0, 0xffffffff, |
| 2853 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 2854 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
| 2855 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
| 2856 |
cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 24) & 0xfffc) | 3, |
| 2857 |
0, 0xffffffff, |
| 2858 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
| 2859 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
| 2860 |
DESC_W_MASK | DESC_A_MASK); |
| 2861 |
} |
| 2862 |
ESP = ECX; |
| 2863 |
EIP = EDX; |
| 2864 |
} |
| 2865 |
|
| 2866 |
#if defined(CONFIG_USER_ONLY)
|
| 2867 |
target_ulong helper_read_crN(int reg)
|
| 2868 |
{
|
| 2869 |
return 0; |
| 2870 |
} |
| 2871 |
|
| 2872 |
void helper_write_crN(int reg, target_ulong t0) |
| 2873 |
{
|
| 2874 |
} |
| 2875 |
|
| 2876 |
void helper_movl_drN_T0(int reg, target_ulong t0) |
| 2877 |
{
|
| 2878 |
} |
| 2879 |
#else
|
| 2880 |
target_ulong helper_read_crN(int reg)
|
| 2881 |
{
|
| 2882 |
target_ulong val; |
| 2883 |
|
| 2884 |
helper_svm_check_intercept_param(SVM_EXIT_READ_CR0 + reg, 0);
|
| 2885 |
switch(reg) {
|
| 2886 |
default:
|
| 2887 |
val = env->cr[reg]; |
| 2888 |
break;
|
| 2889 |
case 8: |
| 2890 |
if (!(env->hflags2 & HF2_VINTR_MASK)) {
|
| 2891 |
val = cpu_get_apic_tpr(env); |
| 2892 |
} else {
|
| 2893 |
val = env->v_tpr; |
| 2894 |
} |
| 2895 |
break;
|
| 2896 |
} |
| 2897 |
return val;
|
| 2898 |
} |
| 2899 |
|
| 2900 |
void helper_write_crN(int reg, target_ulong t0) |
| 2901 |
{
|
| 2902 |
helper_svm_check_intercept_param(SVM_EXIT_WRITE_CR0 + reg, 0);
|
| 2903 |
switch(reg) {
|
| 2904 |
case 0: |
| 2905 |
cpu_x86_update_cr0(env, t0); |
| 2906 |
break;
|
| 2907 |
case 3: |
| 2908 |
cpu_x86_update_cr3(env, t0); |
| 2909 |
break;
|
| 2910 |
case 4: |
| 2911 |
cpu_x86_update_cr4(env, t0); |
| 2912 |
break;
|
| 2913 |
case 8: |
| 2914 |
if (!(env->hflags2 & HF2_VINTR_MASK)) {
|
| 2915 |
cpu_set_apic_tpr(env, t0); |
| 2916 |
} |
| 2917 |
env->v_tpr = t0 & 0x0f;
|
| 2918 |
break;
|
| 2919 |
default:
|
| 2920 |
env->cr[reg] = t0; |
| 2921 |
break;
|
| 2922 |
} |
| 2923 |
} |
| 2924 |
|
| 2925 |
void helper_movl_drN_T0(int reg, target_ulong t0) |
| 2926 |
{
|
| 2927 |
int i;
|
| 2928 |
|
| 2929 |
if (reg < 4) { |
| 2930 |
hw_breakpoint_remove(env, reg); |
| 2931 |
env->dr[reg] = t0; |
| 2932 |
hw_breakpoint_insert(env, reg); |
| 2933 |
} else if (reg == 7) { |
| 2934 |
for (i = 0; i < 4; i++) |
| 2935 |
hw_breakpoint_remove(env, i); |
| 2936 |
env->dr[7] = t0;
|
| 2937 |
for (i = 0; i < 4; i++) |
| 2938 |
hw_breakpoint_insert(env, i); |
| 2939 |
} else
|
| 2940 |
env->dr[reg] = t0; |
| 2941 |
} |
| 2942 |
#endif
|
| 2943 |
|
| 2944 |
void helper_lmsw(target_ulong t0)
|
| 2945 |
{
|
| 2946 |
/* only 4 lower bits of CR0 are modified. PE cannot be set to zero
|
| 2947 |
if already set to one. */
|
| 2948 |
t0 = (env->cr[0] & ~0xe) | (t0 & 0xf); |
| 2949 |
helper_write_crN(0, t0);
|
| 2950 |
} |
| 2951 |
|
| 2952 |
void helper_clts(void) |
| 2953 |
{
|
| 2954 |
env->cr[0] &= ~CR0_TS_MASK;
|
| 2955 |
env->hflags &= ~HF_TS_MASK; |
| 2956 |
} |
| 2957 |
|
| 2958 |
void helper_invlpg(target_ulong addr)
|
| 2959 |
{
|
| 2960 |
helper_svm_check_intercept_param(SVM_EXIT_INVLPG, 0);
|
| 2961 |
tlb_flush_page(env, addr); |
| 2962 |
} |
| 2963 |
|
| 2964 |
void helper_rdtsc(void) |
| 2965 |
{
|
| 2966 |
uint64_t val; |
| 2967 |
|
| 2968 |
if ((env->cr[4] & CR4_TSD_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) { |
| 2969 |
raise_exception(EXCP0D_GPF); |
| 2970 |
} |
| 2971 |
helper_svm_check_intercept_param(SVM_EXIT_RDTSC, 0);
|
| 2972 |
|
| 2973 |
val = cpu_get_tsc(env) + env->tsc_offset; |
| 2974 |
EAX = (uint32_t)(val); |
| 2975 |
EDX = (uint32_t)(val >> 32);
|
| 2976 |
} |
| 2977 |
|
| 2978 |
void helper_rdtscp(void) |
| 2979 |
{
|
| 2980 |
helper_rdtsc(); |
| 2981 |
ECX = (uint32_t)(env->tsc_aux); |
| 2982 |
} |
| 2983 |
|
| 2984 |
void helper_rdpmc(void) |
| 2985 |
{
|
| 2986 |
if ((env->cr[4] & CR4_PCE_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) { |
| 2987 |
raise_exception(EXCP0D_GPF); |
| 2988 |
} |
| 2989 |
helper_svm_check_intercept_param(SVM_EXIT_RDPMC, 0);
|
| 2990 |
|
| 2991 |
/* currently unimplemented */
|
| 2992 |
raise_exception_err(EXCP06_ILLOP, 0);
|
| 2993 |
} |
| 2994 |
|
| 2995 |
#if defined(CONFIG_USER_ONLY)
|
| 2996 |
void helper_wrmsr(void) |
| 2997 |
{
|
| 2998 |
} |
| 2999 |
|
| 3000 |
void helper_rdmsr(void) |
| 3001 |
{
|
| 3002 |
} |
| 3003 |
#else
|
| 3004 |
void helper_wrmsr(void) |
| 3005 |
{
|
| 3006 |
uint64_t val; |
| 3007 |
|
| 3008 |
helper_svm_check_intercept_param(SVM_EXIT_MSR, 1);
|
| 3009 |
|
| 3010 |
val = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
| 3011 |
|
| 3012 |
switch((uint32_t)ECX) {
|
| 3013 |
case MSR_IA32_SYSENTER_CS:
|
| 3014 |
env->sysenter_cs = val & 0xffff;
|
| 3015 |
break;
|
| 3016 |
case MSR_IA32_SYSENTER_ESP:
|
| 3017 |
env->sysenter_esp = val; |
| 3018 |
break;
|
| 3019 |
case MSR_IA32_SYSENTER_EIP:
|
| 3020 |
env->sysenter_eip = val; |
| 3021 |
break;
|
| 3022 |
case MSR_IA32_APICBASE:
|
| 3023 |
cpu_set_apic_base(env, val); |
| 3024 |
break;
|
| 3025 |
case MSR_EFER:
|
| 3026 |
{
|
| 3027 |
uint64_t update_mask; |
| 3028 |
update_mask = 0;
|
| 3029 |
if (env->cpuid_ext2_features & CPUID_EXT2_SYSCALL)
|
| 3030 |
update_mask |= MSR_EFER_SCE; |
| 3031 |
if (env->cpuid_ext2_features & CPUID_EXT2_LM)
|
| 3032 |
update_mask |= MSR_EFER_LME; |
| 3033 |
if (env->cpuid_ext2_features & CPUID_EXT2_FFXSR)
|
| 3034 |
update_mask |= MSR_EFER_FFXSR; |
| 3035 |
if (env->cpuid_ext2_features & CPUID_EXT2_NX)
|
| 3036 |
update_mask |= MSR_EFER_NXE; |
| 3037 |
if (env->cpuid_ext3_features & CPUID_EXT3_SVM)
|
| 3038 |
update_mask |= MSR_EFER_SVME; |
| 3039 |
if (env->cpuid_ext2_features & CPUID_EXT2_FFXSR)
|
| 3040 |
update_mask |= MSR_EFER_FFXSR; |
| 3041 |
cpu_load_efer(env, (env->efer & ~update_mask) | |
| 3042 |
(val & update_mask)); |
| 3043 |
} |
| 3044 |
break;
|
| 3045 |
case MSR_STAR:
|
| 3046 |
env->star = val; |
| 3047 |
break;
|
| 3048 |
case MSR_PAT:
|
| 3049 |
env->pat = val; |
| 3050 |
break;
|
| 3051 |
case MSR_VM_HSAVE_PA:
|
| 3052 |
env->vm_hsave = val; |
| 3053 |
break;
|
| 3054 |
#ifdef TARGET_X86_64
|
| 3055 |
case MSR_LSTAR:
|
| 3056 |
env->lstar = val; |
| 3057 |
break;
|
| 3058 |
case MSR_CSTAR:
|
| 3059 |
env->cstar = val; |
| 3060 |
break;
|
| 3061 |
case MSR_FMASK:
|
| 3062 |
env->fmask = val; |
| 3063 |
break;
|
| 3064 |
case MSR_FSBASE:
|
| 3065 |
env->segs[R_FS].base = val; |
| 3066 |
break;
|
| 3067 |
case MSR_GSBASE:
|
| 3068 |
env->segs[R_GS].base = val; |
| 3069 |
break;
|
| 3070 |
case MSR_KERNELGSBASE:
|
| 3071 |
env->kernelgsbase = val; |
| 3072 |
break;
|
| 3073 |
#endif
|
| 3074 |
case MSR_MTRRphysBase(0): |
| 3075 |
case MSR_MTRRphysBase(1): |
| 3076 |
case MSR_MTRRphysBase(2): |
| 3077 |
case MSR_MTRRphysBase(3): |
| 3078 |
case MSR_MTRRphysBase(4): |
| 3079 |
case MSR_MTRRphysBase(5): |
| 3080 |
case MSR_MTRRphysBase(6): |
| 3081 |
case MSR_MTRRphysBase(7): |
| 3082 |
env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysBase(0)) / 2].base = val; |
| 3083 |
break;
|
| 3084 |
case MSR_MTRRphysMask(0): |
| 3085 |
case MSR_MTRRphysMask(1): |
| 3086 |
case MSR_MTRRphysMask(2): |
| 3087 |
case MSR_MTRRphysMask(3): |
| 3088 |
case MSR_MTRRphysMask(4): |
| 3089 |
case MSR_MTRRphysMask(5): |
| 3090 |
case MSR_MTRRphysMask(6): |
| 3091 |
case MSR_MTRRphysMask(7): |
| 3092 |
env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysMask(0)) / 2].mask = val; |
| 3093 |
break;
|
| 3094 |
case MSR_MTRRfix64K_00000:
|
| 3095 |
env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix64K_00000] = val; |
| 3096 |
break;
|
| 3097 |
case MSR_MTRRfix16K_80000:
|
| 3098 |
case MSR_MTRRfix16K_A0000:
|
| 3099 |
env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix16K_80000 + 1] = val;
|
| 3100 |
break;
|
| 3101 |
case MSR_MTRRfix4K_C0000:
|
| 3102 |
case MSR_MTRRfix4K_C8000:
|
| 3103 |
case MSR_MTRRfix4K_D0000:
|
| 3104 |
case MSR_MTRRfix4K_D8000:
|
| 3105 |
case MSR_MTRRfix4K_E0000:
|
| 3106 |
case MSR_MTRRfix4K_E8000:
|
| 3107 |
case MSR_MTRRfix4K_F0000:
|
| 3108 |
case MSR_MTRRfix4K_F8000:
|
| 3109 |
env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix4K_C0000 + 3] = val;
|
| 3110 |
break;
|
| 3111 |
case MSR_MTRRdefType:
|
| 3112 |
env->mtrr_deftype = val; |
| 3113 |
break;
|
| 3114 |
case MSR_MCG_STATUS:
|
| 3115 |
env->mcg_status = val; |
| 3116 |
break;
|
| 3117 |
case MSR_MCG_CTL:
|
| 3118 |
if ((env->mcg_cap & MCG_CTL_P)
|
| 3119 |
&& (val == 0 || val == ~(uint64_t)0)) |
| 3120 |
env->mcg_ctl = val; |
| 3121 |
break;
|
| 3122 |
case MSR_TSC_AUX:
|
| 3123 |
env->tsc_aux = val; |
| 3124 |
break;
|
| 3125 |
default:
|
| 3126 |
if ((uint32_t)ECX >= MSR_MC0_CTL
|
| 3127 |
&& (uint32_t)ECX < MSR_MC0_CTL + (4 * env->mcg_cap & 0xff)) { |
| 3128 |
uint32_t offset = (uint32_t)ECX - MSR_MC0_CTL; |
| 3129 |
if ((offset & 0x3) != 0 |
| 3130 |
|| (val == 0 || val == ~(uint64_t)0)) |
| 3131 |
env->mce_banks[offset] = val; |
| 3132 |
break;
|
| 3133 |
} |
| 3134 |
/* XXX: exception ? */
|
| 3135 |
break;
|
| 3136 |
} |
| 3137 |
} |
| 3138 |
|
| 3139 |
void helper_rdmsr(void) |
| 3140 |
{
|
| 3141 |
uint64_t val; |
| 3142 |
|
| 3143 |
helper_svm_check_intercept_param(SVM_EXIT_MSR, 0);
|
| 3144 |
|
| 3145 |
switch((uint32_t)ECX) {
|
| 3146 |
case MSR_IA32_SYSENTER_CS:
|
| 3147 |
val = env->sysenter_cs; |
| 3148 |
break;
|
| 3149 |
case MSR_IA32_SYSENTER_ESP:
|
| 3150 |
val = env->sysenter_esp; |
| 3151 |
break;
|
| 3152 |
case MSR_IA32_SYSENTER_EIP:
|
| 3153 |
val = env->sysenter_eip; |
| 3154 |
break;
|
| 3155 |
case MSR_IA32_APICBASE:
|
| 3156 |
val = cpu_get_apic_base(env); |
| 3157 |
break;
|
| 3158 |
case MSR_EFER:
|
| 3159 |
val = env->efer; |
| 3160 |
break;
|
| 3161 |
case MSR_STAR:
|
| 3162 |
val = env->star; |
| 3163 |
break;
|
| 3164 |
case MSR_PAT:
|
| 3165 |
val = env->pat; |
| 3166 |
break;
|
| 3167 |
case MSR_VM_HSAVE_PA:
|
| 3168 |
val = env->vm_hsave; |
| 3169 |
break;
|
| 3170 |
case MSR_IA32_PERF_STATUS:
|
| 3171 |
/* tsc_increment_by_tick */
|
| 3172 |
val = 1000ULL;
|
| 3173 |
/* CPU multiplier */
|
| 3174 |
val |= (((uint64_t)4ULL) << 40); |
| 3175 |
break;
|
| 3176 |
#ifdef TARGET_X86_64
|
| 3177 |
case MSR_LSTAR:
|
| 3178 |
val = env->lstar; |
| 3179 |
break;
|
| 3180 |
case MSR_CSTAR:
|
| 3181 |
val = env->cstar; |
| 3182 |
break;
|
| 3183 |
case MSR_FMASK:
|
| 3184 |
val = env->fmask; |
| 3185 |
break;
|
| 3186 |
case MSR_FSBASE:
|
| 3187 |
val = env->segs[R_FS].base; |
| 3188 |
break;
|
| 3189 |
case MSR_GSBASE:
|
| 3190 |
val = env->segs[R_GS].base; |
| 3191 |
break;
|
| 3192 |
case MSR_KERNELGSBASE:
|
| 3193 |
val = env->kernelgsbase; |
| 3194 |
break;
|
| 3195 |
case MSR_TSC_AUX:
|
| 3196 |
val = env->tsc_aux; |
| 3197 |
break;
|
| 3198 |
#endif
|
| 3199 |
case MSR_MTRRphysBase(0): |
| 3200 |
case MSR_MTRRphysBase(1): |
| 3201 |
case MSR_MTRRphysBase(2): |
| 3202 |
case MSR_MTRRphysBase(3): |
| 3203 |
case MSR_MTRRphysBase(4): |
| 3204 |
case MSR_MTRRphysBase(5): |
| 3205 |
case MSR_MTRRphysBase(6): |
| 3206 |
case MSR_MTRRphysBase(7): |
| 3207 |
val = env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysBase(0)) / 2].base; |
| 3208 |
break;
|
| 3209 |
case MSR_MTRRphysMask(0): |
| 3210 |
case MSR_MTRRphysMask(1): |
| 3211 |
case MSR_MTRRphysMask(2): |
| 3212 |
case MSR_MTRRphysMask(3): |
| 3213 |
case MSR_MTRRphysMask(4): |
| 3214 |
case MSR_MTRRphysMask(5): |
| 3215 |
case MSR_MTRRphysMask(6): |
| 3216 |
case MSR_MTRRphysMask(7): |
| 3217 |
val = env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysMask(0)) / 2].mask; |
| 3218 |
break;
|
| 3219 |
case MSR_MTRRfix64K_00000:
|
| 3220 |
val = env->mtrr_fixed[0];
|
| 3221 |
break;
|
| 3222 |
case MSR_MTRRfix16K_80000:
|
| 3223 |
case MSR_MTRRfix16K_A0000:
|
| 3224 |
val = env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix16K_80000 + 1];
|
| 3225 |
break;
|
| 3226 |
case MSR_MTRRfix4K_C0000:
|
| 3227 |
case MSR_MTRRfix4K_C8000:
|
| 3228 |
case MSR_MTRRfix4K_D0000:
|
| 3229 |
case MSR_MTRRfix4K_D8000:
|
| 3230 |
case MSR_MTRRfix4K_E0000:
|
| 3231 |
case MSR_MTRRfix4K_E8000:
|
| 3232 |
case MSR_MTRRfix4K_F0000:
|
| 3233 |
case MSR_MTRRfix4K_F8000:
|
| 3234 |
val = env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix4K_C0000 + 3];
|
| 3235 |
break;
|
| 3236 |
case MSR_MTRRdefType:
|
| 3237 |
val = env->mtrr_deftype; |
| 3238 |
break;
|
| 3239 |
case MSR_MTRRcap:
|
| 3240 |
if (env->cpuid_features & CPUID_MTRR)
|
| 3241 |
val = MSR_MTRRcap_VCNT | MSR_MTRRcap_FIXRANGE_SUPPORT | MSR_MTRRcap_WC_SUPPORTED; |
| 3242 |
else
|
| 3243 |
/* XXX: exception ? */
|
| 3244 |
val = 0;
|
| 3245 |
break;
|
| 3246 |
case MSR_MCG_CAP:
|
| 3247 |
val = env->mcg_cap; |
| 3248 |
break;
|
| 3249 |
case MSR_MCG_CTL:
|
| 3250 |
if (env->mcg_cap & MCG_CTL_P)
|
| 3251 |
val = env->mcg_ctl; |
| 3252 |
else
|
| 3253 |
val = 0;
|
| 3254 |
break;
|
| 3255 |
case MSR_MCG_STATUS:
|
| 3256 |
val = env->mcg_status; |
| 3257 |
break;
|
| 3258 |
default:
|
| 3259 |
if ((uint32_t)ECX >= MSR_MC0_CTL
|
| 3260 |
&& (uint32_t)ECX < MSR_MC0_CTL + (4 * env->mcg_cap & 0xff)) { |
| 3261 |
uint32_t offset = (uint32_t)ECX - MSR_MC0_CTL; |
| 3262 |
val = env->mce_banks[offset]; |
| 3263 |
break;
|
| 3264 |
} |
| 3265 |
/* XXX: exception ? */
|
| 3266 |
val = 0;
|
| 3267 |
break;
|
| 3268 |
} |
| 3269 |
EAX = (uint32_t)(val); |
| 3270 |
EDX = (uint32_t)(val >> 32);
|
| 3271 |
} |
| 3272 |
#endif
|
| 3273 |
|
| 3274 |
target_ulong helper_lsl(target_ulong selector1) |
| 3275 |
{
|
| 3276 |
unsigned int limit; |
| 3277 |
uint32_t e1, e2, eflags, selector; |
| 3278 |
int rpl, dpl, cpl, type;
|
| 3279 |
|
| 3280 |
selector = selector1 & 0xffff;
|
| 3281 |
eflags = helper_cc_compute_all(CC_OP); |
| 3282 |
if ((selector & 0xfffc) == 0) |
| 3283 |
goto fail;
|
| 3284 |
if (load_segment(&e1, &e2, selector) != 0) |
| 3285 |
goto fail;
|
| 3286 |
rpl = selector & 3;
|
| 3287 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 3288 |
cpl = env->hflags & HF_CPL_MASK; |
| 3289 |
if (e2 & DESC_S_MASK) {
|
| 3290 |
if ((e2 & DESC_CS_MASK) && (e2 & DESC_C_MASK)) {
|
| 3291 |
/* conforming */
|
| 3292 |
} else {
|
| 3293 |
if (dpl < cpl || dpl < rpl)
|
| 3294 |
goto fail;
|
| 3295 |
} |
| 3296 |
} else {
|
| 3297 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
| 3298 |
switch(type) {
|
| 3299 |
case 1: |
| 3300 |
case 2: |
| 3301 |
case 3: |
| 3302 |
case 9: |
| 3303 |
case 11: |
| 3304 |
break;
|
| 3305 |
default:
|
| 3306 |
goto fail;
|
| 3307 |
} |
| 3308 |
if (dpl < cpl || dpl < rpl) {
|
| 3309 |
fail:
|
| 3310 |
CC_SRC = eflags & ~CC_Z; |
| 3311 |
return 0; |
| 3312 |
} |
| 3313 |
} |
| 3314 |
limit = get_seg_limit(e1, e2); |
| 3315 |
CC_SRC = eflags | CC_Z; |
| 3316 |
return limit;
|
| 3317 |
} |
| 3318 |
|
| 3319 |
target_ulong helper_lar(target_ulong selector1) |
| 3320 |
{
|
| 3321 |
uint32_t e1, e2, eflags, selector; |
| 3322 |
int rpl, dpl, cpl, type;
|
| 3323 |
|
| 3324 |
selector = selector1 & 0xffff;
|
| 3325 |
eflags = helper_cc_compute_all(CC_OP); |
| 3326 |
if ((selector & 0xfffc) == 0) |
| 3327 |
goto fail;
|
| 3328 |
if (load_segment(&e1, &e2, selector) != 0) |
| 3329 |
goto fail;
|
| 3330 |
rpl = selector & 3;
|
| 3331 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 3332 |
cpl = env->hflags & HF_CPL_MASK; |
| 3333 |
if (e2 & DESC_S_MASK) {
|
| 3334 |
if ((e2 & DESC_CS_MASK) && (e2 & DESC_C_MASK)) {
|
| 3335 |
/* conforming */
|
| 3336 |
} else {
|
| 3337 |
if (dpl < cpl || dpl < rpl)
|
| 3338 |
goto fail;
|
| 3339 |
} |
| 3340 |
} else {
|
| 3341 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
| 3342 |
switch(type) {
|
| 3343 |
case 1: |
| 3344 |
case 2: |
| 3345 |
case 3: |
| 3346 |
case 4: |
| 3347 |
case 5: |
| 3348 |
case 9: |
| 3349 |
case 11: |
| 3350 |
case 12: |
| 3351 |
break;
|
| 3352 |
default:
|
| 3353 |
goto fail;
|
| 3354 |
} |
| 3355 |
if (dpl < cpl || dpl < rpl) {
|
| 3356 |
fail:
|
| 3357 |
CC_SRC = eflags & ~CC_Z; |
| 3358 |
return 0; |
| 3359 |
} |
| 3360 |
} |
| 3361 |
CC_SRC = eflags | CC_Z; |
| 3362 |
return e2 & 0x00f0ff00; |
| 3363 |
} |
| 3364 |
|
| 3365 |
void helper_verr(target_ulong selector1)
|
| 3366 |
{
|
| 3367 |
uint32_t e1, e2, eflags, selector; |
| 3368 |
int rpl, dpl, cpl;
|
| 3369 |
|
| 3370 |
selector = selector1 & 0xffff;
|
| 3371 |
eflags = helper_cc_compute_all(CC_OP); |
| 3372 |
if ((selector & 0xfffc) == 0) |
| 3373 |
goto fail;
|
| 3374 |
if (load_segment(&e1, &e2, selector) != 0) |
| 3375 |
goto fail;
|
| 3376 |
if (!(e2 & DESC_S_MASK))
|
| 3377 |
goto fail;
|
| 3378 |
rpl = selector & 3;
|
| 3379 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 3380 |
cpl = env->hflags & HF_CPL_MASK; |
| 3381 |
if (e2 & DESC_CS_MASK) {
|
| 3382 |
if (!(e2 & DESC_R_MASK))
|
| 3383 |
goto fail;
|
| 3384 |
if (!(e2 & DESC_C_MASK)) {
|
| 3385 |
if (dpl < cpl || dpl < rpl)
|
| 3386 |
goto fail;
|
| 3387 |
} |
| 3388 |
} else {
|
| 3389 |
if (dpl < cpl || dpl < rpl) {
|
| 3390 |
fail:
|
| 3391 |
CC_SRC = eflags & ~CC_Z; |
| 3392 |
return;
|
| 3393 |
} |
| 3394 |
} |
| 3395 |
CC_SRC = eflags | CC_Z; |
| 3396 |
} |
| 3397 |
|
| 3398 |
void helper_verw(target_ulong selector1)
|
| 3399 |
{
|
| 3400 |
uint32_t e1, e2, eflags, selector; |
| 3401 |
int rpl, dpl, cpl;
|
| 3402 |
|
| 3403 |
selector = selector1 & 0xffff;
|
| 3404 |
eflags = helper_cc_compute_all(CC_OP); |
| 3405 |
if ((selector & 0xfffc) == 0) |
| 3406 |
goto fail;
|
| 3407 |
if (load_segment(&e1, &e2, selector) != 0) |
| 3408 |
goto fail;
|
| 3409 |
if (!(e2 & DESC_S_MASK))
|
| 3410 |
goto fail;
|
| 3411 |
rpl = selector & 3;
|
| 3412 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 3413 |
cpl = env->hflags & HF_CPL_MASK; |
| 3414 |
if (e2 & DESC_CS_MASK) {
|
| 3415 |
goto fail;
|
| 3416 |
} else {
|
| 3417 |
if (dpl < cpl || dpl < rpl)
|
| 3418 |
goto fail;
|
| 3419 |
if (!(e2 & DESC_W_MASK)) {
|
| 3420 |
fail:
|
| 3421 |
CC_SRC = eflags & ~CC_Z; |
| 3422 |
return;
|
| 3423 |
} |
| 3424 |
} |
| 3425 |
CC_SRC = eflags | CC_Z; |
| 3426 |
} |
| 3427 |
|
| 3428 |
/* x87 FPU helpers */
|
| 3429 |
|
| 3430 |
static void fpu_set_exception(int mask) |
| 3431 |
{
|
| 3432 |
env->fpus |= mask; |
| 3433 |
if (env->fpus & (~env->fpuc & FPUC_EM))
|
| 3434 |
env->fpus |= FPUS_SE | FPUS_B; |
| 3435 |
} |
| 3436 |
|
| 3437 |
static inline CPU86_LDouble helper_fdiv(CPU86_LDouble a, CPU86_LDouble b) |
| 3438 |
{
|
| 3439 |
if (b == 0.0) |
| 3440 |
fpu_set_exception(FPUS_ZE); |
| 3441 |
return a / b;
|
| 3442 |
} |
| 3443 |
|
| 3444 |
static void fpu_raise_exception(void) |
| 3445 |
{
|
| 3446 |
if (env->cr[0] & CR0_NE_MASK) { |
| 3447 |
raise_exception(EXCP10_COPR); |
| 3448 |
} |
| 3449 |
#if !defined(CONFIG_USER_ONLY)
|
| 3450 |
else {
|
| 3451 |
cpu_set_ferr(env); |
| 3452 |
} |
| 3453 |
#endif
|
| 3454 |
} |
| 3455 |
|
| 3456 |
void helper_flds_FT0(uint32_t val)
|
| 3457 |
{
|
| 3458 |
union {
|
| 3459 |
float32 f; |
| 3460 |
uint32_t i; |
| 3461 |
} u; |
| 3462 |
u.i = val; |
| 3463 |
FT0 = float32_to_floatx(u.f, &env->fp_status); |
| 3464 |
} |
| 3465 |
|
| 3466 |
void helper_fldl_FT0(uint64_t val)
|
| 3467 |
{
|
| 3468 |
union {
|
| 3469 |
float64 f; |
| 3470 |
uint64_t i; |
| 3471 |
} u; |
| 3472 |
u.i = val; |
| 3473 |
FT0 = float64_to_floatx(u.f, &env->fp_status); |
| 3474 |
} |
| 3475 |
|
| 3476 |
void helper_fildl_FT0(int32_t val)
|
| 3477 |
{
|
| 3478 |
FT0 = int32_to_floatx(val, &env->fp_status); |
| 3479 |
} |
| 3480 |
|
| 3481 |
void helper_flds_ST0(uint32_t val)
|
| 3482 |
{
|
| 3483 |
int new_fpstt;
|
| 3484 |
union {
|
| 3485 |
float32 f; |
| 3486 |
uint32_t i; |
| 3487 |
} u; |
| 3488 |
new_fpstt = (env->fpstt - 1) & 7; |
| 3489 |
u.i = val; |
| 3490 |
env->fpregs[new_fpstt].d = float32_to_floatx(u.f, &env->fp_status); |
| 3491 |
env->fpstt = new_fpstt; |
| 3492 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
| 3493 |
} |
| 3494 |
|
| 3495 |
void helper_fldl_ST0(uint64_t val)
|
| 3496 |
{
|
| 3497 |
int new_fpstt;
|
| 3498 |
union {
|
| 3499 |
float64 f; |
| 3500 |
uint64_t i; |
| 3501 |
} u; |
| 3502 |
new_fpstt = (env->fpstt - 1) & 7; |
| 3503 |
u.i = val; |
| 3504 |
env->fpregs[new_fpstt].d = float64_to_floatx(u.f, &env->fp_status); |
| 3505 |
env->fpstt = new_fpstt; |
| 3506 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
| 3507 |
} |
| 3508 |
|
| 3509 |
void helper_fildl_ST0(int32_t val)
|
| 3510 |
{
|
| 3511 |
int new_fpstt;
|
| 3512 |
new_fpstt = (env->fpstt - 1) & 7; |
| 3513 |
env->fpregs[new_fpstt].d = int32_to_floatx(val, &env->fp_status); |
| 3514 |
env->fpstt = new_fpstt; |
| 3515 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
| 3516 |
} |
| 3517 |
|
| 3518 |
void helper_fildll_ST0(int64_t val)
|
| 3519 |
{
|
| 3520 |
int new_fpstt;
|
| 3521 |
new_fpstt = (env->fpstt - 1) & 7; |
| 3522 |
env->fpregs[new_fpstt].d = int64_to_floatx(val, &env->fp_status); |
| 3523 |
env->fpstt = new_fpstt; |
| 3524 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
| 3525 |
} |
| 3526 |
|
| 3527 |
uint32_t helper_fsts_ST0(void)
|
| 3528 |
{
|
| 3529 |
union {
|
| 3530 |
float32 f; |
| 3531 |
uint32_t i; |
| 3532 |
} u; |
| 3533 |
u.f = floatx_to_float32(ST0, &env->fp_status); |
| 3534 |
return u.i;
|
| 3535 |
} |
| 3536 |
|
| 3537 |
uint64_t helper_fstl_ST0(void)
|
| 3538 |
{
|
| 3539 |
union {
|
| 3540 |
float64 f; |
| 3541 |
uint64_t i; |
| 3542 |
} u; |
| 3543 |
u.f = floatx_to_float64(ST0, &env->fp_status); |
| 3544 |
return u.i;
|
| 3545 |
} |
| 3546 |
|
| 3547 |
int32_t helper_fist_ST0(void)
|
| 3548 |
{
|
| 3549 |
int32_t val; |
| 3550 |
val = floatx_to_int32(ST0, &env->fp_status); |
| 3551 |
if (val != (int16_t)val)
|
| 3552 |
val = -32768;
|
| 3553 |
return val;
|
| 3554 |
} |
| 3555 |
|
| 3556 |
int32_t helper_fistl_ST0(void)
|
| 3557 |
{
|
| 3558 |
int32_t val; |
| 3559 |
val = floatx_to_int32(ST0, &env->fp_status); |
| 3560 |
return val;
|
| 3561 |
} |
| 3562 |
|
| 3563 |
int64_t helper_fistll_ST0(void)
|
| 3564 |
{
|
| 3565 |
int64_t val; |
| 3566 |
val = floatx_to_int64(ST0, &env->fp_status); |
| 3567 |
return val;
|
| 3568 |
} |
| 3569 |
|
| 3570 |
int32_t helper_fistt_ST0(void)
|
| 3571 |
{
|
| 3572 |
int32_t val; |
| 3573 |
val = floatx_to_int32_round_to_zero(ST0, &env->fp_status); |
| 3574 |
if (val != (int16_t)val)
|
| 3575 |
val = -32768;
|
| 3576 |
return val;
|
| 3577 |
} |
| 3578 |
|
| 3579 |
int32_t helper_fisttl_ST0(void)
|
| 3580 |
{
|
| 3581 |
int32_t val; |
| 3582 |
val = floatx_to_int32_round_to_zero(ST0, &env->fp_status); |
| 3583 |
return val;
|
| 3584 |
} |
| 3585 |
|
| 3586 |
int64_t helper_fisttll_ST0(void)
|
| 3587 |
{
|
| 3588 |
int64_t val; |
| 3589 |
val = floatx_to_int64_round_to_zero(ST0, &env->fp_status); |
| 3590 |
return val;
|
| 3591 |
} |
| 3592 |
|
| 3593 |
void helper_fldt_ST0(target_ulong ptr)
|
| 3594 |
{
|
| 3595 |
int new_fpstt;
|
| 3596 |
new_fpstt = (env->fpstt - 1) & 7; |
| 3597 |
env->fpregs[new_fpstt].d = helper_fldt(ptr); |
| 3598 |
env->fpstt = new_fpstt; |
| 3599 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
| 3600 |
} |
| 3601 |
|
| 3602 |
void helper_fstt_ST0(target_ulong ptr)
|
| 3603 |
{
|
| 3604 |
helper_fstt(ST0, ptr); |
| 3605 |
} |
| 3606 |
|
| 3607 |
void helper_fpush(void) |
| 3608 |
{
|
| 3609 |
fpush(); |
| 3610 |
} |
| 3611 |
|
| 3612 |
void helper_fpop(void) |
| 3613 |
{
|
| 3614 |
fpop(); |
| 3615 |
} |
| 3616 |
|
| 3617 |
void helper_fdecstp(void) |
| 3618 |
{
|
| 3619 |
env->fpstt = (env->fpstt - 1) & 7; |
| 3620 |
env->fpus &= (~0x4700);
|
| 3621 |
} |
| 3622 |
|
| 3623 |
void helper_fincstp(void) |
| 3624 |
{
|
| 3625 |
env->fpstt = (env->fpstt + 1) & 7; |
| 3626 |
env->fpus &= (~0x4700);
|
| 3627 |
} |
| 3628 |
|
| 3629 |
/* FPU move */
|
| 3630 |
|
| 3631 |
void helper_ffree_STN(int st_index) |
| 3632 |
{
|
| 3633 |
env->fptags[(env->fpstt + st_index) & 7] = 1; |
| 3634 |
} |
| 3635 |
|
| 3636 |
void helper_fmov_ST0_FT0(void) |
| 3637 |
{
|
| 3638 |
ST0 = FT0; |
| 3639 |
} |
| 3640 |
|
| 3641 |
void helper_fmov_FT0_STN(int st_index) |
| 3642 |
{
|
| 3643 |
FT0 = ST(st_index); |
| 3644 |
} |
| 3645 |
|
| 3646 |
void helper_fmov_ST0_STN(int st_index) |
| 3647 |
{
|
| 3648 |
ST0 = ST(st_index); |
| 3649 |
} |
| 3650 |
|
| 3651 |
void helper_fmov_STN_ST0(int st_index) |
| 3652 |
{
|
| 3653 |
ST(st_index) = ST0; |
| 3654 |
} |
| 3655 |
|
| 3656 |
void helper_fxchg_ST0_STN(int st_index) |
| 3657 |
{
|
| 3658 |
CPU86_LDouble tmp; |
| 3659 |
tmp = ST(st_index); |
| 3660 |
ST(st_index) = ST0; |
| 3661 |
ST0 = tmp; |
| 3662 |
} |
| 3663 |
|
| 3664 |
/* FPU operations */
|
| 3665 |
|
| 3666 |
static const int fcom_ccval[4] = {0x0100, 0x4000, 0x0000, 0x4500}; |
| 3667 |
|
| 3668 |
void helper_fcom_ST0_FT0(void) |
| 3669 |
{
|
| 3670 |
int ret;
|
| 3671 |
|
| 3672 |
ret = floatx_compare(ST0, FT0, &env->fp_status); |
| 3673 |
env->fpus = (env->fpus & ~0x4500) | fcom_ccval[ret + 1]; |
| 3674 |
} |
| 3675 |
|
| 3676 |
void helper_fucom_ST0_FT0(void) |
| 3677 |
{
|
| 3678 |
int ret;
|
| 3679 |
|
| 3680 |
ret = floatx_compare_quiet(ST0, FT0, &env->fp_status); |
| 3681 |
env->fpus = (env->fpus & ~0x4500) | fcom_ccval[ret+ 1]; |
| 3682 |
} |
| 3683 |
|
| 3684 |
static const int fcomi_ccval[4] = {CC_C, CC_Z, 0, CC_Z | CC_P | CC_C}; |
| 3685 |
|
| 3686 |
void helper_fcomi_ST0_FT0(void) |
| 3687 |
{
|
| 3688 |
int eflags;
|
| 3689 |
int ret;
|
| 3690 |
|
| 3691 |
ret = floatx_compare(ST0, FT0, &env->fp_status); |
| 3692 |
eflags = helper_cc_compute_all(CC_OP); |
| 3693 |
eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | fcomi_ccval[ret + 1];
|
| 3694 |
CC_SRC = eflags; |
| 3695 |
} |
| 3696 |
|
| 3697 |
void helper_fucomi_ST0_FT0(void) |
| 3698 |
{
|
| 3699 |
int eflags;
|
| 3700 |
int ret;
|
| 3701 |
|
| 3702 |
ret = floatx_compare_quiet(ST0, FT0, &env->fp_status); |
| 3703 |
eflags = helper_cc_compute_all(CC_OP); |
| 3704 |
eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | fcomi_ccval[ret + 1];
|
| 3705 |
CC_SRC = eflags; |
| 3706 |
} |
| 3707 |
|
| 3708 |
void helper_fadd_ST0_FT0(void) |
| 3709 |
{
|
| 3710 |
ST0 += FT0; |
| 3711 |
} |
| 3712 |
|
| 3713 |
void helper_fmul_ST0_FT0(void) |
| 3714 |
{
|
| 3715 |
ST0 *= FT0; |
| 3716 |
} |
| 3717 |
|
| 3718 |
void helper_fsub_ST0_FT0(void) |
| 3719 |
{
|
| 3720 |
ST0 -= FT0; |
| 3721 |
} |
| 3722 |
|
| 3723 |
void helper_fsubr_ST0_FT0(void) |
| 3724 |
{
|
| 3725 |
ST0 = FT0 - ST0; |
| 3726 |
} |
| 3727 |
|
| 3728 |
void helper_fdiv_ST0_FT0(void) |
| 3729 |
{
|
| 3730 |
ST0 = helper_fdiv(ST0, FT0); |
| 3731 |
} |
| 3732 |
|
| 3733 |
void helper_fdivr_ST0_FT0(void) |
| 3734 |
{
|
| 3735 |
ST0 = helper_fdiv(FT0, ST0); |
| 3736 |
} |
| 3737 |
|
| 3738 |
/* fp operations between STN and ST0 */
|
| 3739 |
|
| 3740 |
void helper_fadd_STN_ST0(int st_index) |
| 3741 |
{
|
| 3742 |
ST(st_index) += ST0; |
| 3743 |
} |
| 3744 |
|
| 3745 |
void helper_fmul_STN_ST0(int st_index) |
| 3746 |
{
|
| 3747 |
ST(st_index) *= ST0; |
| 3748 |
} |
| 3749 |
|
| 3750 |
void helper_fsub_STN_ST0(int st_index) |
| 3751 |
{
|
| 3752 |
ST(st_index) -= ST0; |
| 3753 |
} |
| 3754 |
|
| 3755 |
void helper_fsubr_STN_ST0(int st_index) |
| 3756 |
{
|
| 3757 |
CPU86_LDouble *p; |
| 3758 |
p = &ST(st_index); |
| 3759 |
*p = ST0 - *p; |
| 3760 |
} |
| 3761 |
|
| 3762 |
void helper_fdiv_STN_ST0(int st_index) |
| 3763 |
{
|
| 3764 |
CPU86_LDouble *p; |
| 3765 |
p = &ST(st_index); |
| 3766 |
*p = helper_fdiv(*p, ST0); |
| 3767 |
} |
| 3768 |
|
| 3769 |
void helper_fdivr_STN_ST0(int st_index) |
| 3770 |
{
|
| 3771 |
CPU86_LDouble *p; |
| 3772 |
p = &ST(st_index); |
| 3773 |
*p = helper_fdiv(ST0, *p); |
| 3774 |
} |
| 3775 |
|
| 3776 |
/* misc FPU operations */
|
| 3777 |
void helper_fchs_ST0(void) |
| 3778 |
{
|
| 3779 |
ST0 = floatx_chs(ST0); |
| 3780 |
} |
| 3781 |
|
| 3782 |
void helper_fabs_ST0(void) |
| 3783 |
{
|
| 3784 |
ST0 = floatx_abs(ST0); |
| 3785 |
} |
| 3786 |
|
| 3787 |
void helper_fld1_ST0(void) |
| 3788 |
{
|
| 3789 |
ST0 = f15rk[1];
|
| 3790 |
} |
| 3791 |
|
| 3792 |
void helper_fldl2t_ST0(void) |
| 3793 |
{
|
| 3794 |
ST0 = f15rk[6];
|
| 3795 |
} |
| 3796 |
|
| 3797 |
void helper_fldl2e_ST0(void) |
| 3798 |
{
|
| 3799 |
ST0 = f15rk[5];
|
| 3800 |
} |
| 3801 |
|
| 3802 |
void helper_fldpi_ST0(void) |
| 3803 |
{
|
| 3804 |
ST0 = f15rk[2];
|
| 3805 |
} |
| 3806 |
|
| 3807 |
void helper_fldlg2_ST0(void) |
| 3808 |
{
|
| 3809 |
ST0 = f15rk[3];
|
| 3810 |
} |
| 3811 |
|
| 3812 |
void helper_fldln2_ST0(void) |
| 3813 |
{
|
| 3814 |
ST0 = f15rk[4];
|
| 3815 |
} |
| 3816 |
|
| 3817 |
void helper_fldz_ST0(void) |
| 3818 |
{
|
| 3819 |
ST0 = f15rk[0];
|
| 3820 |
} |
| 3821 |
|
| 3822 |
void helper_fldz_FT0(void) |
| 3823 |
{
|
| 3824 |
FT0 = f15rk[0];
|
| 3825 |
} |
| 3826 |
|
| 3827 |
uint32_t helper_fnstsw(void)
|
| 3828 |
{
|
| 3829 |
return (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
| 3830 |
} |
| 3831 |
|
| 3832 |
uint32_t helper_fnstcw(void)
|
| 3833 |
{
|
| 3834 |
return env->fpuc;
|
| 3835 |
} |
| 3836 |
|
| 3837 |
static void update_fp_status(void) |
| 3838 |
{
|
| 3839 |
int rnd_type;
|
| 3840 |
|
| 3841 |
/* set rounding mode */
|
| 3842 |
switch(env->fpuc & RC_MASK) {
|
| 3843 |
default:
|
| 3844 |
case RC_NEAR:
|
| 3845 |
rnd_type = float_round_nearest_even; |
| 3846 |
break;
|
| 3847 |
case RC_DOWN:
|
| 3848 |
rnd_type = float_round_down; |
| 3849 |
break;
|
| 3850 |
case RC_UP:
|
| 3851 |
rnd_type = float_round_up; |
| 3852 |
break;
|
| 3853 |
case RC_CHOP:
|
| 3854 |
rnd_type = float_round_to_zero; |
| 3855 |
break;
|
| 3856 |
} |
| 3857 |
set_float_rounding_mode(rnd_type, &env->fp_status); |
| 3858 |
#ifdef FLOATX80
|
| 3859 |
switch((env->fpuc >> 8) & 3) { |
| 3860 |
case 0: |
| 3861 |
rnd_type = 32;
|
| 3862 |
break;
|
| 3863 |
case 2: |
| 3864 |
rnd_type = 64;
|
| 3865 |
break;
|
| 3866 |
case 3: |
| 3867 |
default:
|
| 3868 |
rnd_type = 80;
|
| 3869 |
break;
|
| 3870 |
} |
| 3871 |
set_floatx80_rounding_precision(rnd_type, &env->fp_status); |
| 3872 |
#endif
|
| 3873 |
} |
| 3874 |
|
| 3875 |
void helper_fldcw(uint32_t val)
|
| 3876 |
{
|
| 3877 |
env->fpuc = val; |
| 3878 |
update_fp_status(); |
| 3879 |
} |
| 3880 |
|
| 3881 |
void helper_fclex(void) |
| 3882 |
{
|
| 3883 |
env->fpus &= 0x7f00;
|
| 3884 |
} |
| 3885 |
|
| 3886 |
void helper_fwait(void) |
| 3887 |
{
|
| 3888 |
if (env->fpus & FPUS_SE)
|
| 3889 |
fpu_raise_exception(); |
| 3890 |
} |
| 3891 |
|
| 3892 |
void helper_fninit(void) |
| 3893 |
{
|
| 3894 |
env->fpus = 0;
|
| 3895 |
env->fpstt = 0;
|
| 3896 |
env->fpuc = 0x37f;
|
| 3897 |
env->fptags[0] = 1; |
| 3898 |
env->fptags[1] = 1; |
| 3899 |
env->fptags[2] = 1; |
| 3900 |
env->fptags[3] = 1; |
| 3901 |
env->fptags[4] = 1; |
| 3902 |
env->fptags[5] = 1; |
| 3903 |
env->fptags[6] = 1; |
| 3904 |
env->fptags[7] = 1; |
| 3905 |
} |
| 3906 |
|
| 3907 |
/* BCD ops */
|
| 3908 |
|
| 3909 |
void helper_fbld_ST0(target_ulong ptr)
|
| 3910 |
{
|
| 3911 |
CPU86_LDouble tmp; |
| 3912 |
uint64_t val; |
| 3913 |
unsigned int v; |
| 3914 |
int i;
|
| 3915 |
|
| 3916 |
val = 0;
|
| 3917 |
for(i = 8; i >= 0; i--) { |
| 3918 |
v = ldub(ptr + i); |
| 3919 |
val = (val * 100) + ((v >> 4) * 10) + (v & 0xf); |
| 3920 |
} |
| 3921 |
tmp = val; |
| 3922 |
if (ldub(ptr + 9) & 0x80) |
| 3923 |
tmp = -tmp; |
| 3924 |
fpush(); |
| 3925 |
ST0 = tmp; |
| 3926 |
} |
| 3927 |
|
| 3928 |
void helper_fbst_ST0(target_ulong ptr)
|
| 3929 |
{
|
| 3930 |
int v;
|
| 3931 |
target_ulong mem_ref, mem_end; |
| 3932 |
int64_t val; |
| 3933 |
|
| 3934 |
val = floatx_to_int64(ST0, &env->fp_status); |
| 3935 |
mem_ref = ptr; |
| 3936 |
mem_end = mem_ref + 9;
|
| 3937 |
if (val < 0) { |
| 3938 |
stb(mem_end, 0x80);
|
| 3939 |
val = -val; |
| 3940 |
} else {
|
| 3941 |
stb(mem_end, 0x00);
|
| 3942 |
} |
| 3943 |
while (mem_ref < mem_end) {
|
| 3944 |
if (val == 0) |
| 3945 |
break;
|
| 3946 |
v = val % 100;
|
| 3947 |
val = val / 100;
|
| 3948 |
v = ((v / 10) << 4) | (v % 10); |
| 3949 |
stb(mem_ref++, v); |
| 3950 |
} |
| 3951 |
while (mem_ref < mem_end) {
|
| 3952 |
stb(mem_ref++, 0);
|
| 3953 |
} |
| 3954 |
} |
| 3955 |
|
| 3956 |
void helper_f2xm1(void) |
| 3957 |
{
|
| 3958 |
ST0 = pow(2.0,ST0) - 1.0; |
| 3959 |
} |
| 3960 |
|
| 3961 |
void helper_fyl2x(void) |
| 3962 |
{
|
| 3963 |
CPU86_LDouble fptemp; |
| 3964 |
|
| 3965 |
fptemp = ST0; |
| 3966 |
if (fptemp>0.0){ |
| 3967 |
fptemp = log(fptemp)/log(2.0); /* log2(ST) */ |
| 3968 |
ST1 *= fptemp; |
| 3969 |
fpop(); |
| 3970 |
} else {
|
| 3971 |
env->fpus &= (~0x4700);
|
| 3972 |
env->fpus |= 0x400;
|
| 3973 |
} |
| 3974 |
} |
| 3975 |
|
| 3976 |
void helper_fptan(void) |
| 3977 |
{
|
| 3978 |
CPU86_LDouble fptemp; |
| 3979 |
|
| 3980 |
fptemp = ST0; |
| 3981 |
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
| 3982 |
env->fpus |= 0x400;
|
| 3983 |
} else {
|
| 3984 |
ST0 = tan(fptemp); |
| 3985 |
fpush(); |
| 3986 |
ST0 = 1.0; |
| 3987 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
| 3988 |
/* the above code is for |arg| < 2**52 only */
|
| 3989 |
} |
| 3990 |
} |
| 3991 |
|
| 3992 |
void helper_fpatan(void) |
| 3993 |
{
|
| 3994 |
CPU86_LDouble fptemp, fpsrcop; |
| 3995 |
|
| 3996 |
fpsrcop = ST1; |
| 3997 |
fptemp = ST0; |
| 3998 |
ST1 = atan2(fpsrcop,fptemp); |
| 3999 |
fpop(); |
| 4000 |
} |
| 4001 |
|
| 4002 |
void helper_fxtract(void) |
| 4003 |
{
|
| 4004 |
CPU86_LDoubleU temp; |
| 4005 |
unsigned int expdif; |
| 4006 |
|
| 4007 |
temp.d = ST0; |
| 4008 |
expdif = EXPD(temp) - EXPBIAS; |
| 4009 |
/*DP exponent bias*/
|
| 4010 |
ST0 = expdif; |
| 4011 |
fpush(); |
| 4012 |
BIASEXPONENT(temp); |
| 4013 |
ST0 = temp.d; |
| 4014 |
} |
| 4015 |
|
| 4016 |
void helper_fprem1(void) |
| 4017 |
{
|
| 4018 |
CPU86_LDouble dblq, fpsrcop, fptemp; |
| 4019 |
CPU86_LDoubleU fpsrcop1, fptemp1; |
| 4020 |
int expdif;
|
| 4021 |
signed long long int q; |
| 4022 |
|
| 4023 |
if (isinf(ST0) || isnan(ST0) || isnan(ST1) || (ST1 == 0.0)) { |
| 4024 |
ST0 = 0.0 / 0.0; /* NaN */ |
| 4025 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
| 4026 |
return;
|
| 4027 |
} |
| 4028 |
|
| 4029 |
fpsrcop = ST0; |
| 4030 |
fptemp = ST1; |
| 4031 |
fpsrcop1.d = fpsrcop; |
| 4032 |
fptemp1.d = fptemp; |
| 4033 |
expdif = EXPD(fpsrcop1) - EXPD(fptemp1); |
| 4034 |
|
| 4035 |
if (expdif < 0) { |
| 4036 |
/* optimisation? taken from the AMD docs */
|
| 4037 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
| 4038 |
/* ST0 is unchanged */
|
| 4039 |
return;
|
| 4040 |
} |
| 4041 |
|
| 4042 |
if (expdif < 53) { |
| 4043 |
dblq = fpsrcop / fptemp; |
| 4044 |
/* round dblq towards nearest integer */
|
| 4045 |
dblq = rint(dblq); |
| 4046 |
ST0 = fpsrcop - fptemp * dblq; |
| 4047 |
|
| 4048 |
/* convert dblq to q by truncating towards zero */
|
| 4049 |
if (dblq < 0.0) |
| 4050 |
q = (signed long long int)(-dblq); |
| 4051 |
else
|
| 4052 |
q = (signed long long int)dblq; |
| 4053 |
|
| 4054 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
| 4055 |
/* (C0,C3,C1) <-- (q2,q1,q0) */
|
| 4056 |
env->fpus |= (q & 0x4) << (8 - 2); /* (C0) <-- q2 */ |
| 4057 |
env->fpus |= (q & 0x2) << (14 - 1); /* (C3) <-- q1 */ |
| 4058 |
env->fpus |= (q & 0x1) << (9 - 0); /* (C1) <-- q0 */ |
| 4059 |
} else {
|
| 4060 |
env->fpus |= 0x400; /* C2 <-- 1 */ |
| 4061 |
fptemp = pow(2.0, expdif - 50); |
| 4062 |
fpsrcop = (ST0 / ST1) / fptemp; |
| 4063 |
/* fpsrcop = integer obtained by chopping */
|
| 4064 |
fpsrcop = (fpsrcop < 0.0) ? |
| 4065 |
-(floor(fabs(fpsrcop))) : floor(fpsrcop); |
| 4066 |
ST0 -= (ST1 * fpsrcop * fptemp); |
| 4067 |
} |
| 4068 |
} |
| 4069 |
|
| 4070 |
void helper_fprem(void) |
| 4071 |
{
|
| 4072 |
CPU86_LDouble dblq, fpsrcop, fptemp; |
| 4073 |
CPU86_LDoubleU fpsrcop1, fptemp1; |
| 4074 |
int expdif;
|
| 4075 |
signed long long int q; |
| 4076 |
|
| 4077 |
if (isinf(ST0) || isnan(ST0) || isnan(ST1) || (ST1 == 0.0)) { |
| 4078 |
ST0 = 0.0 / 0.0; /* NaN */ |
| 4079 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
| 4080 |
return;
|
| 4081 |
} |
| 4082 |
|
| 4083 |
fpsrcop = (CPU86_LDouble)ST0; |
| 4084 |
fptemp = (CPU86_LDouble)ST1; |
| 4085 |
fpsrcop1.d = fpsrcop; |
| 4086 |
fptemp1.d = fptemp; |
| 4087 |
expdif = EXPD(fpsrcop1) - EXPD(fptemp1); |
| 4088 |
|
| 4089 |
if (expdif < 0) { |
| 4090 |
/* optimisation? taken from the AMD docs */
|
| 4091 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
| 4092 |
/* ST0 is unchanged */
|
| 4093 |
return;
|
| 4094 |
} |
| 4095 |
|
| 4096 |
if ( expdif < 53 ) { |
| 4097 |
dblq = fpsrcop/*ST0*/ / fptemp/*ST1*/; |
| 4098 |
/* round dblq towards zero */
|
| 4099 |
dblq = (dblq < 0.0) ? ceil(dblq) : floor(dblq); |
| 4100 |
ST0 = fpsrcop/*ST0*/ - fptemp * dblq;
|
| 4101 |
|
| 4102 |
/* convert dblq to q by truncating towards zero */
|
| 4103 |
if (dblq < 0.0) |
| 4104 |
q = (signed long long int)(-dblq); |
| 4105 |
else
|
| 4106 |
q = (signed long long int)dblq; |
| 4107 |
|
| 4108 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
| 4109 |
/* (C0,C3,C1) <-- (q2,q1,q0) */
|
| 4110 |
env->fpus |= (q & 0x4) << (8 - 2); /* (C0) <-- q2 */ |
| 4111 |
env->fpus |= (q & 0x2) << (14 - 1); /* (C3) <-- q1 */ |
| 4112 |
env->fpus |= (q & 0x1) << (9 - 0); /* (C1) <-- q0 */ |
| 4113 |
} else {
|
| 4114 |
int N = 32 + (expdif % 32); /* as per AMD docs */ |
| 4115 |
env->fpus |= 0x400; /* C2 <-- 1 */ |
| 4116 |
fptemp = pow(2.0, (double)(expdif - N)); |
| 4117 |
fpsrcop = (ST0 / ST1) / fptemp; |
| 4118 |
/* fpsrcop = integer obtained by chopping */
|
| 4119 |
fpsrcop = (fpsrcop < 0.0) ? |
| 4120 |
-(floor(fabs(fpsrcop))) : floor(fpsrcop); |
| 4121 |
ST0 -= (ST1 * fpsrcop * fptemp); |
| 4122 |
} |
| 4123 |
} |
| 4124 |
|
| 4125 |
void helper_fyl2xp1(void) |
| 4126 |
{
|
| 4127 |
CPU86_LDouble fptemp; |
| 4128 |
|
| 4129 |
fptemp = ST0; |
| 4130 |
if ((fptemp+1.0)>0.0) { |
| 4131 |
fptemp = log(fptemp+1.0) / log(2.0); /* log2(ST+1.0) */ |
| 4132 |
ST1 *= fptemp; |
| 4133 |
fpop(); |
| 4134 |
} else {
|
| 4135 |
env->fpus &= (~0x4700);
|
| 4136 |
env->fpus |= 0x400;
|
| 4137 |
} |
| 4138 |
} |
| 4139 |
|
| 4140 |
void helper_fsqrt(void) |
| 4141 |
{
|
| 4142 |
CPU86_LDouble fptemp; |
| 4143 |
|
| 4144 |
fptemp = ST0; |
| 4145 |
if (fptemp<0.0) { |
| 4146 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
| 4147 |
env->fpus |= 0x400;
|
| 4148 |
} |
| 4149 |
ST0 = sqrt(fptemp); |
| 4150 |
} |
| 4151 |
|
| 4152 |
void helper_fsincos(void) |
| 4153 |
{
|
| 4154 |
CPU86_LDouble fptemp; |
| 4155 |
|
| 4156 |
fptemp = ST0; |
| 4157 |
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
| 4158 |
env->fpus |= 0x400;
|
| 4159 |
} else {
|
| 4160 |
ST0 = sin(fptemp); |
| 4161 |
fpush(); |
| 4162 |
ST0 = cos(fptemp); |
| 4163 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
| 4164 |
/* the above code is for |arg| < 2**63 only */
|
| 4165 |
} |
| 4166 |
} |
| 4167 |
|
| 4168 |
void helper_frndint(void) |
| 4169 |
{
|
| 4170 |
ST0 = floatx_round_to_int(ST0, &env->fp_status); |
| 4171 |
} |
| 4172 |
|
| 4173 |
void helper_fscale(void) |
| 4174 |
{
|
| 4175 |
ST0 = ldexp (ST0, (int)(ST1));
|
| 4176 |
} |
| 4177 |
|
| 4178 |
void helper_fsin(void) |
| 4179 |
{
|
| 4180 |
CPU86_LDouble fptemp; |
| 4181 |
|
| 4182 |
fptemp = ST0; |
| 4183 |
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
| 4184 |
env->fpus |= 0x400;
|
| 4185 |
} else {
|
| 4186 |
ST0 = sin(fptemp); |
| 4187 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
| 4188 |
/* the above code is for |arg| < 2**53 only */
|
| 4189 |
} |
| 4190 |
} |
| 4191 |
|
| 4192 |
void helper_fcos(void) |
| 4193 |
{
|
| 4194 |
CPU86_LDouble fptemp; |
| 4195 |
|
| 4196 |
fptemp = ST0; |
| 4197 |
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
| 4198 |
env->fpus |= 0x400;
|
| 4199 |
} else {
|
| 4200 |
ST0 = cos(fptemp); |
| 4201 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
| 4202 |
/* the above code is for |arg5 < 2**63 only */
|
| 4203 |
} |
| 4204 |
} |
| 4205 |
|
| 4206 |
void helper_fxam_ST0(void) |
| 4207 |
{
|
| 4208 |
CPU86_LDoubleU temp; |
| 4209 |
int expdif;
|
| 4210 |
|
| 4211 |
temp.d = ST0; |
| 4212 |
|
| 4213 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
| 4214 |
if (SIGND(temp))
|
| 4215 |
env->fpus |= 0x200; /* C1 <-- 1 */ |
| 4216 |
|
| 4217 |
/* XXX: test fptags too */
|
| 4218 |
expdif = EXPD(temp); |
| 4219 |
if (expdif == MAXEXPD) {
|
| 4220 |
#ifdef USE_X86LDOUBLE
|
| 4221 |
if (MANTD(temp) == 0x8000000000000000ULL) |
| 4222 |
#else
|
| 4223 |
if (MANTD(temp) == 0) |
| 4224 |
#endif
|
| 4225 |
env->fpus |= 0x500 /*Infinity*/; |
| 4226 |
else
|
| 4227 |
env->fpus |= 0x100 /*NaN*/; |
| 4228 |
} else if (expdif == 0) { |
| 4229 |
if (MANTD(temp) == 0) |
| 4230 |
env->fpus |= 0x4000 /*Zero*/; |
| 4231 |
else
|
| 4232 |
env->fpus |= 0x4400 /*Denormal*/; |
| 4233 |
} else {
|
| 4234 |
env->fpus |= 0x400;
|
| 4235 |
} |
| 4236 |
} |
| 4237 |
|
| 4238 |
void helper_fstenv(target_ulong ptr, int data32) |
| 4239 |
{
|
| 4240 |
int fpus, fptag, exp, i;
|
| 4241 |
uint64_t mant; |
| 4242 |
CPU86_LDoubleU tmp; |
| 4243 |
|
| 4244 |
fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
| 4245 |
fptag = 0;
|
| 4246 |
for (i=7; i>=0; i--) { |
| 4247 |
fptag <<= 2;
|
| 4248 |
if (env->fptags[i]) {
|
| 4249 |
fptag |= 3;
|
| 4250 |
} else {
|
| 4251 |
tmp.d = env->fpregs[i].d; |
| 4252 |
exp = EXPD(tmp); |
| 4253 |
mant = MANTD(tmp); |
| 4254 |
if (exp == 0 && mant == 0) { |
| 4255 |
/* zero */
|
| 4256 |
fptag |= 1;
|
| 4257 |
} else if (exp == 0 || exp == MAXEXPD |
| 4258 |
#ifdef USE_X86LDOUBLE
|
| 4259 |
|| (mant & (1LL << 63)) == 0 |
| 4260 |
#endif
|
| 4261 |
) {
|
| 4262 |
/* NaNs, infinity, denormal */
|
| 4263 |
fptag |= 2;
|
| 4264 |
} |
| 4265 |
} |
| 4266 |
} |
| 4267 |
if (data32) {
|
| 4268 |
/* 32 bit */
|
| 4269 |
stl(ptr, env->fpuc); |
| 4270 |
stl(ptr + 4, fpus);
|
| 4271 |
stl(ptr + 8, fptag);
|
| 4272 |
stl(ptr + 12, 0); /* fpip */ |
| 4273 |
stl(ptr + 16, 0); /* fpcs */ |
| 4274 |
stl(ptr + 20, 0); /* fpoo */ |
| 4275 |
stl(ptr + 24, 0); /* fpos */ |
| 4276 |
} else {
|
| 4277 |
/* 16 bit */
|
| 4278 |
stw(ptr, env->fpuc); |
| 4279 |
stw(ptr + 2, fpus);
|
| 4280 |
stw(ptr + 4, fptag);
|
| 4281 |
stw(ptr + 6, 0); |
| 4282 |
stw(ptr + 8, 0); |
| 4283 |
stw(ptr + 10, 0); |
| 4284 |
stw(ptr + 12, 0); |
| 4285 |
} |
| 4286 |
} |
| 4287 |
|
| 4288 |
void helper_fldenv(target_ulong ptr, int data32) |
| 4289 |
{
|
| 4290 |
int i, fpus, fptag;
|
| 4291 |
|
| 4292 |
if (data32) {
|
| 4293 |
env->fpuc = lduw(ptr); |
| 4294 |
fpus = lduw(ptr + 4);
|
| 4295 |
fptag = lduw(ptr + 8);
|
| 4296 |
} |
| 4297 |
else {
|
| 4298 |
env->fpuc = lduw(ptr); |
| 4299 |
fpus = lduw(ptr + 2);
|
| 4300 |
fptag = lduw(ptr + 4);
|
| 4301 |
} |
| 4302 |
env->fpstt = (fpus >> 11) & 7; |
| 4303 |
env->fpus = fpus & ~0x3800;
|
| 4304 |
for(i = 0;i < 8; i++) { |
| 4305 |
env->fptags[i] = ((fptag & 3) == 3); |
| 4306 |
fptag >>= 2;
|
| 4307 |
} |
| 4308 |
} |
| 4309 |
|
| 4310 |
void helper_fsave(target_ulong ptr, int data32) |
| 4311 |
{
|
| 4312 |
CPU86_LDouble tmp; |
| 4313 |
int i;
|
| 4314 |
|
| 4315 |
helper_fstenv(ptr, data32); |
| 4316 |
|
| 4317 |
ptr += (14 << data32);
|
| 4318 |
for(i = 0;i < 8; i++) { |
| 4319 |
tmp = ST(i); |
| 4320 |
helper_fstt(tmp, ptr); |
| 4321 |
ptr += 10;
|
| 4322 |
} |
| 4323 |
|
| 4324 |
/* fninit */
|
| 4325 |
env->fpus = 0;
|
| 4326 |
env->fpstt = 0;
|
| 4327 |
env->fpuc = 0x37f;
|
| 4328 |
env->fptags[0] = 1; |
| 4329 |
env->fptags[1] = 1; |
| 4330 |
env->fptags[2] = 1; |
| 4331 |
env->fptags[3] = 1; |
| 4332 |
env->fptags[4] = 1; |
| 4333 |
env->fptags[5] = 1; |
| 4334 |
env->fptags[6] = 1; |
| 4335 |
env->fptags[7] = 1; |
| 4336 |
} |
| 4337 |
|
| 4338 |
void helper_frstor(target_ulong ptr, int data32) |
| 4339 |
{
|
| 4340 |
CPU86_LDouble tmp; |
| 4341 |
int i;
|
| 4342 |
|
| 4343 |
helper_fldenv(ptr, data32); |
| 4344 |
ptr += (14 << data32);
|
| 4345 |
|
| 4346 |
for(i = 0;i < 8; i++) { |
| 4347 |
tmp = helper_fldt(ptr); |
| 4348 |
ST(i) = tmp; |
| 4349 |
ptr += 10;
|
| 4350 |
} |
| 4351 |
} |
| 4352 |
|
| 4353 |
void helper_fxsave(target_ulong ptr, int data64) |
| 4354 |
{
|
| 4355 |
int fpus, fptag, i, nb_xmm_regs;
|
| 4356 |
CPU86_LDouble tmp; |
| 4357 |
target_ulong addr; |
| 4358 |
|
| 4359 |
/* The operand must be 16 byte aligned */
|
| 4360 |
if (ptr & 0xf) { |
| 4361 |
raise_exception(EXCP0D_GPF); |
| 4362 |
} |
| 4363 |
|
| 4364 |
fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
| 4365 |
fptag = 0;
|
| 4366 |
for(i = 0; i < 8; i++) { |
| 4367 |
fptag |= (env->fptags[i] << i); |
| 4368 |
} |
| 4369 |
stw(ptr, env->fpuc); |
| 4370 |
stw(ptr + 2, fpus);
|
| 4371 |
stw(ptr + 4, fptag ^ 0xff); |
| 4372 |
#ifdef TARGET_X86_64
|
| 4373 |
if (data64) {
|
| 4374 |
stq(ptr + 0x08, 0); /* rip */ |
| 4375 |
stq(ptr + 0x10, 0); /* rdp */ |
| 4376 |
} else
|
| 4377 |
#endif
|
| 4378 |
{
|
| 4379 |
stl(ptr + 0x08, 0); /* eip */ |
| 4380 |
stl(ptr + 0x0c, 0); /* sel */ |
| 4381 |
stl(ptr + 0x10, 0); /* dp */ |
| 4382 |
stl(ptr + 0x14, 0); /* sel */ |
| 4383 |
} |
| 4384 |
|
| 4385 |
addr = ptr + 0x20;
|
| 4386 |
for(i = 0;i < 8; i++) { |
| 4387 |
tmp = ST(i); |
| 4388 |
helper_fstt(tmp, addr); |
| 4389 |
addr += 16;
|
| 4390 |
} |
| 4391 |
|
| 4392 |
if (env->cr[4] & CR4_OSFXSR_MASK) { |
| 4393 |
/* XXX: finish it */
|
| 4394 |
stl(ptr + 0x18, env->mxcsr); /* mxcsr */ |
| 4395 |
stl(ptr + 0x1c, 0x0000ffff); /* mxcsr_mask */ |
| 4396 |
if (env->hflags & HF_CS64_MASK)
|
| 4397 |
nb_xmm_regs = 16;
|
| 4398 |
else
|
| 4399 |
nb_xmm_regs = 8;
|
| 4400 |
addr = ptr + 0xa0;
|
| 4401 |
/* Fast FXSAVE leaves out the XMM registers */
|
| 4402 |
if (!(env->efer & MSR_EFER_FFXSR)
|
| 4403 |
|| (env->hflags & HF_CPL_MASK) |
| 4404 |
|| !(env->hflags & HF_LMA_MASK)) {
|
| 4405 |
for(i = 0; i < nb_xmm_regs; i++) { |
| 4406 |
stq(addr, env->xmm_regs[i].XMM_Q(0));
|
| 4407 |
stq(addr + 8, env->xmm_regs[i].XMM_Q(1)); |
| 4408 |
addr += 16;
|
| 4409 |
} |
| 4410 |
} |
| 4411 |
} |
| 4412 |
} |
| 4413 |
|
| 4414 |
void helper_fxrstor(target_ulong ptr, int data64) |
| 4415 |
{
|
| 4416 |
int i, fpus, fptag, nb_xmm_regs;
|
| 4417 |
CPU86_LDouble tmp; |
| 4418 |
target_ulong addr; |
| 4419 |
|
| 4420 |
/* The operand must be 16 byte aligned */
|
| 4421 |
if (ptr & 0xf) { |
| 4422 |
raise_exception(EXCP0D_GPF); |
| 4423 |
} |
| 4424 |
|
| 4425 |
env->fpuc = lduw(ptr); |
| 4426 |
fpus = lduw(ptr + 2);
|
| 4427 |
fptag = lduw(ptr + 4);
|
| 4428 |
env->fpstt = (fpus >> 11) & 7; |
| 4429 |
env->fpus = fpus & ~0x3800;
|
| 4430 |
fptag ^= 0xff;
|
| 4431 |
for(i = 0;i < 8; i++) { |
| 4432 |
env->fptags[i] = ((fptag >> i) & 1);
|
| 4433 |
} |
| 4434 |
|
| 4435 |
addr = ptr + 0x20;
|
| 4436 |
for(i = 0;i < 8; i++) { |
| 4437 |
tmp = helper_fldt(addr); |
| 4438 |
ST(i) = tmp; |
| 4439 |
addr += 16;
|
| 4440 |
} |
| 4441 |
|
| 4442 |
if (env->cr[4] & CR4_OSFXSR_MASK) { |
| 4443 |
/* XXX: finish it */
|
| 4444 |
env->mxcsr = ldl(ptr + 0x18);
|
| 4445 |
//ldl(ptr + 0x1c);
|
| 4446 |
if (env->hflags & HF_CS64_MASK)
|
| 4447 |
nb_xmm_regs = 16;
|
| 4448 |
else
|
| 4449 |
nb_xmm_regs = 8;
|
| 4450 |
addr = ptr + 0xa0;
|
| 4451 |
/* Fast FXRESTORE leaves out the XMM registers */
|
| 4452 |
if (!(env->efer & MSR_EFER_FFXSR)
|
| 4453 |
|| (env->hflags & HF_CPL_MASK) |
| 4454 |
|| !(env->hflags & HF_LMA_MASK)) {
|
| 4455 |
for(i = 0; i < nb_xmm_regs; i++) { |
| 4456 |
env->xmm_regs[i].XMM_Q(0) = ldq(addr);
|
| 4457 |
env->xmm_regs[i].XMM_Q(1) = ldq(addr + 8); |
| 4458 |
addr += 16;
|
| 4459 |
} |
| 4460 |
} |
| 4461 |
} |
| 4462 |
} |
| 4463 |
|
| 4464 |
#ifndef USE_X86LDOUBLE
|
| 4465 |
|
| 4466 |
void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f)
|
| 4467 |
{
|
| 4468 |
CPU86_LDoubleU temp; |
| 4469 |
int e;
|
| 4470 |
|
| 4471 |
temp.d = f; |
| 4472 |
/* mantissa */
|
| 4473 |
*pmant = (MANTD(temp) << 11) | (1LL << 63); |
| 4474 |
/* exponent + sign */
|
| 4475 |
e = EXPD(temp) - EXPBIAS + 16383;
|
| 4476 |
e |= SIGND(temp) >> 16;
|
| 4477 |
*pexp = e; |
| 4478 |
} |
| 4479 |
|
| 4480 |
CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper) |
| 4481 |
{
|
| 4482 |
CPU86_LDoubleU temp; |
| 4483 |
int e;
|
| 4484 |
uint64_t ll; |
| 4485 |
|
| 4486 |
/* XXX: handle overflow ? */
|
| 4487 |
e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */ |
| 4488 |
e |= (upper >> 4) & 0x800; /* sign */ |
| 4489 |
ll = (mant >> 11) & ((1LL << 52) - 1); |
| 4490 |
#ifdef __arm__
|
| 4491 |
temp.l.upper = (e << 20) | (ll >> 32); |
| 4492 |
temp.l.lower = ll; |
| 4493 |
#else
|
| 4494 |
temp.ll = ll | ((uint64_t)e << 52);
|
| 4495 |
#endif
|
| 4496 |
return temp.d;
|
| 4497 |
} |
| 4498 |
|
| 4499 |
#else
|
| 4500 |
|
| 4501 |
void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f)
|
| 4502 |
{
|
| 4503 |
CPU86_LDoubleU temp; |
| 4504 |
|
| 4505 |
temp.d = f; |
| 4506 |
*pmant = temp.l.lower; |
| 4507 |
*pexp = temp.l.upper; |
| 4508 |
} |
| 4509 |
|
| 4510 |
CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper) |
| 4511 |
{
|
| 4512 |
CPU86_LDoubleU temp; |
| 4513 |
|
| 4514 |
temp.l.upper = upper; |
| 4515 |
temp.l.lower = mant; |
| 4516 |
return temp.d;
|
| 4517 |
} |
| 4518 |
#endif
|
| 4519 |
|
| 4520 |
#ifdef TARGET_X86_64
|
| 4521 |
|
| 4522 |
//#define DEBUG_MULDIV
|
| 4523 |
|
| 4524 |
static void add128(uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b) |
| 4525 |
{
|
| 4526 |
*plow += a; |
| 4527 |
/* carry test */
|
| 4528 |
if (*plow < a)
|
| 4529 |
(*phigh)++; |
| 4530 |
*phigh += b; |
| 4531 |
} |
| 4532 |
|
| 4533 |
static void neg128(uint64_t *plow, uint64_t *phigh) |
| 4534 |
{
|
| 4535 |
*plow = ~ *plow; |
| 4536 |
*phigh = ~ *phigh; |
| 4537 |
add128(plow, phigh, 1, 0); |
| 4538 |
} |
| 4539 |
|
| 4540 |
/* return TRUE if overflow */
|
| 4541 |
static int div64(uint64_t *plow, uint64_t *phigh, uint64_t b) |
| 4542 |
{
|
| 4543 |
uint64_t q, r, a1, a0; |
| 4544 |
int i, qb, ab;
|
| 4545 |
|
| 4546 |
a0 = *plow; |
| 4547 |
a1 = *phigh; |
| 4548 |
if (a1 == 0) { |
| 4549 |
q = a0 / b; |
| 4550 |
r = a0 % b; |
| 4551 |
*plow = q; |
| 4552 |
*phigh = r; |
| 4553 |
} else {
|
| 4554 |
if (a1 >= b)
|
| 4555 |
return 1; |
| 4556 |
/* XXX: use a better algorithm */
|
| 4557 |
for(i = 0; i < 64; i++) { |
| 4558 |
ab = a1 >> 63;
|
| 4559 |
a1 = (a1 << 1) | (a0 >> 63); |
| 4560 |
if (ab || a1 >= b) {
|
| 4561 |
a1 -= b; |
| 4562 |
qb = 1;
|
| 4563 |
} else {
|
| 4564 |
qb = 0;
|
| 4565 |
} |
| 4566 |
a0 = (a0 << 1) | qb;
|
| 4567 |
} |
| 4568 |
#if defined(DEBUG_MULDIV)
|
| 4569 |
printf("div: 0x%016" PRIx64 "%016" PRIx64 " / 0x%016" PRIx64 ": q=0x%016" PRIx64 " r=0x%016" PRIx64 "\n", |
| 4570 |
*phigh, *plow, b, a0, a1); |
| 4571 |
#endif
|
| 4572 |
*plow = a0; |
| 4573 |
*phigh = a1; |
| 4574 |
} |
| 4575 |
return 0; |
| 4576 |
} |
| 4577 |
|
| 4578 |
/* return TRUE if overflow */
|
| 4579 |
static int idiv64(uint64_t *plow, uint64_t *phigh, int64_t b) |
| 4580 |
{
|
| 4581 |
int sa, sb;
|
| 4582 |
sa = ((int64_t)*phigh < 0);
|
| 4583 |
if (sa)
|
| 4584 |
neg128(plow, phigh); |
| 4585 |
sb = (b < 0);
|
| 4586 |
if (sb)
|
| 4587 |
b = -b; |
| 4588 |
if (div64(plow, phigh, b) != 0) |
| 4589 |
return 1; |
| 4590 |
if (sa ^ sb) {
|
| 4591 |
if (*plow > (1ULL << 63)) |
| 4592 |
return 1; |
| 4593 |
*plow = - *plow; |
| 4594 |
} else {
|
| 4595 |
if (*plow >= (1ULL << 63)) |
| 4596 |
return 1; |
| 4597 |
} |
| 4598 |
if (sa)
|
| 4599 |
*phigh = - *phigh; |
| 4600 |
return 0; |
| 4601 |
} |
| 4602 |
|
| 4603 |
void helper_mulq_EAX_T0(target_ulong t0)
|
| 4604 |
{
|
| 4605 |
uint64_t r0, r1; |
| 4606 |
|
| 4607 |
mulu64(&r0, &r1, EAX, t0); |
| 4608 |
EAX = r0; |
| 4609 |
EDX = r1; |
| 4610 |
CC_DST = r0; |
| 4611 |
CC_SRC = r1; |
| 4612 |
} |
| 4613 |
|
| 4614 |
void helper_imulq_EAX_T0(target_ulong t0)
|
| 4615 |
{
|
| 4616 |
uint64_t r0, r1; |
| 4617 |
|
| 4618 |
muls64(&r0, &r1, EAX, t0); |
| 4619 |
EAX = r0; |
| 4620 |
EDX = r1; |
| 4621 |
CC_DST = r0; |
| 4622 |
CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
|
| 4623 |
} |
| 4624 |
|
| 4625 |
target_ulong helper_imulq_T0_T1(target_ulong t0, target_ulong t1) |
| 4626 |
{
|
| 4627 |
uint64_t r0, r1; |
| 4628 |
|
| 4629 |
muls64(&r0, &r1, t0, t1); |
| 4630 |
CC_DST = r0; |
| 4631 |
CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
|
| 4632 |
return r0;
|
| 4633 |
} |
| 4634 |
|
| 4635 |
void helper_divq_EAX(target_ulong t0)
|
| 4636 |
{
|
| 4637 |
uint64_t r0, r1; |
| 4638 |
if (t0 == 0) { |
| 4639 |
raise_exception(EXCP00_DIVZ); |
| 4640 |
} |
| 4641 |
r0 = EAX; |
| 4642 |
r1 = EDX; |
| 4643 |
if (div64(&r0, &r1, t0))
|
| 4644 |
raise_exception(EXCP00_DIVZ); |
| 4645 |
EAX = r0; |
| 4646 |
EDX = r1; |
| 4647 |
} |
| 4648 |
|
| 4649 |
void helper_idivq_EAX(target_ulong t0)
|
| 4650 |
{
|
| 4651 |
uint64_t r0, r1; |
| 4652 |
if (t0 == 0) { |
| 4653 |
raise_exception(EXCP00_DIVZ); |
| 4654 |
} |
| 4655 |
r0 = EAX; |
| 4656 |
r1 = EDX; |
| 4657 |
if (idiv64(&r0, &r1, t0))
|
| 4658 |
raise_exception(EXCP00_DIVZ); |
| 4659 |
EAX = r0; |
| 4660 |
EDX = r1; |
| 4661 |
} |
| 4662 |
#endif
|
| 4663 |
|
| 4664 |
static void do_hlt(void) |
| 4665 |
{
|
| 4666 |
env->hflags &= ~HF_INHIBIT_IRQ_MASK; /* needed if sti is just before */
|
| 4667 |
env->halted = 1;
|
| 4668 |
env->exception_index = EXCP_HLT; |
| 4669 |
cpu_loop_exit(); |
| 4670 |
} |
| 4671 |
|
| 4672 |
void helper_hlt(int next_eip_addend) |
| 4673 |
{
|
| 4674 |
helper_svm_check_intercept_param(SVM_EXIT_HLT, 0);
|
| 4675 |
EIP += next_eip_addend; |
| 4676 |
|
| 4677 |
do_hlt(); |
| 4678 |
} |
| 4679 |
|
| 4680 |
void helper_monitor(target_ulong ptr)
|
| 4681 |
{
|
| 4682 |
if ((uint32_t)ECX != 0) |
| 4683 |
raise_exception(EXCP0D_GPF); |
| 4684 |
/* XXX: store address ? */
|
| 4685 |
helper_svm_check_intercept_param(SVM_EXIT_MONITOR, 0);
|
| 4686 |
} |
| 4687 |
|
| 4688 |
void helper_mwait(int next_eip_addend) |
| 4689 |
{
|
| 4690 |
if ((uint32_t)ECX != 0) |
| 4691 |
raise_exception(EXCP0D_GPF); |
| 4692 |
helper_svm_check_intercept_param(SVM_EXIT_MWAIT, 0);
|
| 4693 |
EIP += next_eip_addend; |
| 4694 |
|
| 4695 |
/* XXX: not complete but not completely erroneous */
|
| 4696 |
if (env->cpu_index != 0 || env->next_cpu != NULL) { |
| 4697 |
/* more than one CPU: do not sleep because another CPU may
|
| 4698 |
wake this one */
|
| 4699 |
} else {
|
| 4700 |
do_hlt(); |
| 4701 |
} |
| 4702 |
} |
| 4703 |
|
| 4704 |
void helper_debug(void) |
| 4705 |
{
|
| 4706 |
env->exception_index = EXCP_DEBUG; |
| 4707 |
cpu_loop_exit(); |
| 4708 |
} |
| 4709 |
|
| 4710 |
void helper_reset_rf(void) |
| 4711 |
{
|
| 4712 |
env->eflags &= ~RF_MASK; |
| 4713 |
} |
| 4714 |
|
| 4715 |
void helper_raise_interrupt(int intno, int next_eip_addend) |
| 4716 |
{
|
| 4717 |
raise_interrupt(intno, 1, 0, next_eip_addend); |
| 4718 |
} |
| 4719 |
|
| 4720 |
void helper_raise_exception(int exception_index) |
| 4721 |
{
|
| 4722 |
raise_exception(exception_index); |
| 4723 |
} |
| 4724 |
|
| 4725 |
void helper_cli(void) |
| 4726 |
{
|
| 4727 |
env->eflags &= ~IF_MASK; |
| 4728 |
} |
| 4729 |
|
| 4730 |
void helper_sti(void) |
| 4731 |
{
|
| 4732 |
env->eflags |= IF_MASK; |
| 4733 |
} |
| 4734 |
|
| 4735 |
#if 0
|
| 4736 |
/* vm86plus instructions */
|
| 4737 |
void helper_cli_vm(void)
|
| 4738 |
{
|
| 4739 |
env->eflags &= ~VIF_MASK;
|
| 4740 |
}
|
| 4741 |
|
| 4742 |
void helper_sti_vm(void)
|
| 4743 |
{
|
| 4744 |
env->eflags |= VIF_MASK;
|
| 4745 |
if (env->eflags & VIP_MASK) {
|
| 4746 |
raise_exception(EXCP0D_GPF);
|
| 4747 |
}
|
| 4748 |
}
|
| 4749 |
#endif
|
| 4750 |
|
| 4751 |
void helper_set_inhibit_irq(void) |
| 4752 |
{
|
| 4753 |
env->hflags |= HF_INHIBIT_IRQ_MASK; |
| 4754 |
} |
| 4755 |
|
| 4756 |
void helper_reset_inhibit_irq(void) |
| 4757 |
{
|
| 4758 |
env->hflags &= ~HF_INHIBIT_IRQ_MASK; |
| 4759 |
} |
| 4760 |
|
| 4761 |
void helper_boundw(target_ulong a0, int v) |
| 4762 |
{
|
| 4763 |
int low, high;
|
| 4764 |
low = ldsw(a0); |
| 4765 |
high = ldsw(a0 + 2);
|
| 4766 |
v = (int16_t)v; |
| 4767 |
if (v < low || v > high) {
|
| 4768 |
raise_exception(EXCP05_BOUND); |
| 4769 |
} |
| 4770 |
} |
| 4771 |
|
| 4772 |
void helper_boundl(target_ulong a0, int v) |
| 4773 |
{
|
| 4774 |
int low, high;
|
| 4775 |
low = ldl(a0); |
| 4776 |
high = ldl(a0 + 4);
|
| 4777 |
if (v < low || v > high) {
|
| 4778 |
raise_exception(EXCP05_BOUND); |
| 4779 |
} |
| 4780 |
} |
| 4781 |
|
| 4782 |
static float approx_rsqrt(float a) |
| 4783 |
{
|
| 4784 |
return 1.0 / sqrt(a); |
| 4785 |
} |
| 4786 |
|
| 4787 |
static float approx_rcp(float a) |
| 4788 |
{
|
| 4789 |
return 1.0 / a; |
| 4790 |
} |
| 4791 |
|
| 4792 |
#if !defined(CONFIG_USER_ONLY)
|
| 4793 |
|
| 4794 |
#define MMUSUFFIX _mmu
|
| 4795 |
|
| 4796 |
#define SHIFT 0 |
| 4797 |
#include "softmmu_template.h" |
| 4798 |
|
| 4799 |
#define SHIFT 1 |
| 4800 |
#include "softmmu_template.h" |
| 4801 |
|
| 4802 |
#define SHIFT 2 |
| 4803 |
#include "softmmu_template.h" |
| 4804 |
|
| 4805 |
#define SHIFT 3 |
| 4806 |
#include "softmmu_template.h" |
| 4807 |
|
| 4808 |
#endif
|
| 4809 |
|
| 4810 |
#if !defined(CONFIG_USER_ONLY)
|
| 4811 |
/* try to fill the TLB and return an exception if error. If retaddr is
|
| 4812 |
NULL, it means that the function was called in C code (i.e. not
|
| 4813 |
from generated code or from helper.c) */
|
| 4814 |
/* XXX: fix it to restore all registers */
|
| 4815 |
void tlb_fill(target_ulong addr, int is_write, int mmu_idx, void *retaddr) |
| 4816 |
{
|
| 4817 |
TranslationBlock *tb; |
| 4818 |
int ret;
|
| 4819 |
unsigned long pc; |
| 4820 |
CPUX86State *saved_env; |
| 4821 |
|
| 4822 |
/* XXX: hack to restore env in all cases, even if not called from
|
| 4823 |
generated code */
|
| 4824 |
saved_env = env; |
| 4825 |
env = cpu_single_env; |
| 4826 |
|
| 4827 |
ret = cpu_x86_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
|
| 4828 |
if (ret) {
|
| 4829 |
if (retaddr) {
|
| 4830 |
/* now we have a real cpu fault */
|
| 4831 |
pc = (unsigned long)retaddr; |
| 4832 |
tb = tb_find_pc(pc); |
| 4833 |
if (tb) {
|
| 4834 |
/* the PC is inside the translated code. It means that we have
|
| 4835 |
a virtual CPU fault */
|
| 4836 |
cpu_restore_state(tb, env, pc, NULL);
|
| 4837 |
} |
| 4838 |
} |
| 4839 |
raise_exception_err(env->exception_index, env->error_code); |
| 4840 |
} |
| 4841 |
env = saved_env; |
| 4842 |
} |
| 4843 |
#endif
|
| 4844 |
|
| 4845 |
/* Secure Virtual Machine helpers */
|
| 4846 |
|
| 4847 |
#if defined(CONFIG_USER_ONLY)
|
| 4848 |
|
| 4849 |
void helper_vmrun(int aflag, int next_eip_addend) |
| 4850 |
{
|
| 4851 |
} |
| 4852 |
void helper_vmmcall(void) |
| 4853 |
{
|
| 4854 |
} |
| 4855 |
void helper_vmload(int aflag) |
| 4856 |
{
|
| 4857 |
} |
| 4858 |
void helper_vmsave(int aflag) |
| 4859 |
{
|
| 4860 |
} |
| 4861 |
void helper_stgi(void) |
| 4862 |
{
|
| 4863 |
} |
| 4864 |
void helper_clgi(void) |
| 4865 |
{
|
| 4866 |
} |
| 4867 |
void helper_skinit(void) |
| 4868 |
{
|
| 4869 |
} |
| 4870 |
void helper_invlpga(int aflag) |
| 4871 |
{
|
| 4872 |
} |
| 4873 |
void helper_vmexit(uint32_t exit_code, uint64_t exit_info_1)
|
| 4874 |
{
|
| 4875 |
} |
| 4876 |
void helper_svm_check_intercept_param(uint32_t type, uint64_t param)
|
| 4877 |
{
|
| 4878 |
} |
| 4879 |
|
| 4880 |
void helper_svm_check_io(uint32_t port, uint32_t param,
|
| 4881 |
uint32_t next_eip_addend) |
| 4882 |
{
|
| 4883 |
} |
| 4884 |
#else
|
| 4885 |
|
| 4886 |
static inline void svm_save_seg(target_phys_addr_t addr, |
| 4887 |
const SegmentCache *sc)
|
| 4888 |
{
|
| 4889 |
stw_phys(addr + offsetof(struct vmcb_seg, selector),
|
| 4890 |
sc->selector); |
| 4891 |
stq_phys(addr + offsetof(struct vmcb_seg, base),
|
| 4892 |
sc->base); |
| 4893 |
stl_phys(addr + offsetof(struct vmcb_seg, limit),
|
| 4894 |
sc->limit); |
| 4895 |
stw_phys(addr + offsetof(struct vmcb_seg, attrib),
|
| 4896 |
((sc->flags >> 8) & 0xff) | ((sc->flags >> 12) & 0x0f00)); |
| 4897 |
} |
| 4898 |
|
| 4899 |
static inline void svm_load_seg(target_phys_addr_t addr, SegmentCache *sc) |
| 4900 |
{
|
| 4901 |
unsigned int flags; |
| 4902 |
|
| 4903 |
sc->selector = lduw_phys(addr + offsetof(struct vmcb_seg, selector));
|
| 4904 |
sc->base = ldq_phys(addr + offsetof(struct vmcb_seg, base));
|
| 4905 |
sc->limit = ldl_phys(addr + offsetof(struct vmcb_seg, limit));
|
| 4906 |
flags = lduw_phys(addr + offsetof(struct vmcb_seg, attrib));
|
| 4907 |
sc->flags = ((flags & 0xff) << 8) | ((flags & 0x0f00) << 12); |
| 4908 |
} |
| 4909 |
|
| 4910 |
static inline void svm_load_seg_cache(target_phys_addr_t addr, |
| 4911 |
CPUState *env, int seg_reg)
|
| 4912 |
{
|
| 4913 |
SegmentCache sc1, *sc = &sc1; |
| 4914 |
svm_load_seg(addr, sc); |
| 4915 |
cpu_x86_load_seg_cache(env, seg_reg, sc->selector, |
| 4916 |
sc->base, sc->limit, sc->flags); |
| 4917 |
} |
| 4918 |
|
| 4919 |
void helper_vmrun(int aflag, int next_eip_addend) |
| 4920 |
{
|
| 4921 |
target_ulong addr; |
| 4922 |
uint32_t event_inj; |
| 4923 |
uint32_t int_ctl; |
| 4924 |
|
| 4925 |
helper_svm_check_intercept_param(SVM_EXIT_VMRUN, 0);
|
| 4926 |
|
| 4927 |
if (aflag == 2) |
| 4928 |
addr = EAX; |
| 4929 |
else
|
| 4930 |
addr = (uint32_t)EAX; |
| 4931 |
|
| 4932 |
qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmrun! " TARGET_FMT_lx "\n", addr); |
| 4933 |
|
| 4934 |
env->vm_vmcb = addr; |
| 4935 |
|
| 4936 |
/* save the current CPU state in the hsave page */
|
| 4937 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.base), env->gdt.base);
|
| 4938 |
stl_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.limit), env->gdt.limit);
|
| 4939 |
|
| 4940 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.base), env->idt.base);
|
| 4941 |
stl_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.limit), env->idt.limit);
|
| 4942 |
|
| 4943 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr0), env->cr[0]); |
| 4944 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr2), env->cr[2]); |
| 4945 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr3), env->cr[3]); |
| 4946 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr4), env->cr[4]); |
| 4947 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr6), env->dr[6]); |
| 4948 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr7), env->dr[7]); |
| 4949 |
|
| 4950 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.efer), env->efer);
|
| 4951 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rflags), compute_eflags());
|
| 4952 |
|
| 4953 |
svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.es),
|
| 4954 |
&env->segs[R_ES]); |
| 4955 |
svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.cs),
|
| 4956 |
&env->segs[R_CS]); |
| 4957 |
svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.ss),
|
| 4958 |
&env->segs[R_SS]); |
| 4959 |
svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.ds),
|
| 4960 |
&env->segs[R_DS]); |
| 4961 |
|
| 4962 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rip),
|
| 4963 |
EIP + next_eip_addend); |
| 4964 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rsp), ESP);
|
| 4965 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rax), EAX);
|
| 4966 |
|
| 4967 |
/* load the interception bitmaps so we do not need to access the
|
| 4968 |
vmcb in svm mode */
|
| 4969 |
env->intercept = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept));
|
| 4970 |
env->intercept_cr_read = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_cr_read));
|
| 4971 |
env->intercept_cr_write = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_cr_write));
|
| 4972 |
env->intercept_dr_read = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_dr_read));
|
| 4973 |
env->intercept_dr_write = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_dr_write));
|
| 4974 |
env->intercept_exceptions = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_exceptions));
|
| 4975 |
|
| 4976 |
/* enable intercepts */
|
| 4977 |
env->hflags |= HF_SVMI_MASK; |
| 4978 |
|
| 4979 |
env->tsc_offset = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.tsc_offset));
|
| 4980 |
|
| 4981 |
env->gdt.base = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.base));
|
| 4982 |
env->gdt.limit = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.limit));
|
| 4983 |
|
| 4984 |
env->idt.base = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.base));
|
| 4985 |
env->idt.limit = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.limit));
|
| 4986 |
|
| 4987 |
/* clear exit_info_2 so we behave like the real hardware */
|
| 4988 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2), 0); |
| 4989 |
|
| 4990 |
cpu_x86_update_cr0(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr0)));
|
| 4991 |
cpu_x86_update_cr4(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr4)));
|
| 4992 |
cpu_x86_update_cr3(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr3)));
|
| 4993 |
env->cr[2] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr2)); |
| 4994 |
int_ctl = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl));
|
| 4995 |
env->hflags2 &= ~(HF2_HIF_MASK | HF2_VINTR_MASK); |
| 4996 |
if (int_ctl & V_INTR_MASKING_MASK) {
|
| 4997 |
env->v_tpr = int_ctl & V_TPR_MASK; |
| 4998 |
env->hflags2 |= HF2_VINTR_MASK; |
| 4999 |
if (env->eflags & IF_MASK)
|
| 5000 |
env->hflags2 |= HF2_HIF_MASK; |
| 5001 |
} |
| 5002 |
|
| 5003 |
cpu_load_efer(env, |
| 5004 |
ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.efer)));
|
| 5005 |
env->eflags = 0;
|
| 5006 |
load_eflags(ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rflags)),
|
| 5007 |
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)); |
| 5008 |
CC_OP = CC_OP_EFLAGS; |
| 5009 |
|
| 5010 |
svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.es),
|
| 5011 |
env, R_ES); |
| 5012 |
svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.cs),
|
| 5013 |
env, R_CS); |
| 5014 |
svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.ss),
|
| 5015 |
env, R_SS); |
| 5016 |
svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.ds),
|
| 5017 |
env, R_DS); |
| 5018 |
|
| 5019 |
EIP = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rip));
|
| 5020 |
env->eip = EIP; |
| 5021 |
ESP = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rsp));
|
| 5022 |
EAX = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rax));
|
| 5023 |
env->dr[7] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr7)); |
| 5024 |
env->dr[6] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr6)); |
| 5025 |
cpu_x86_set_cpl(env, ldub_phys(env->vm_vmcb + offsetof(struct vmcb, save.cpl)));
|
| 5026 |
|
| 5027 |
/* FIXME: guest state consistency checks */
|
| 5028 |
|
| 5029 |
switch(ldub_phys(env->vm_vmcb + offsetof(struct vmcb, control.tlb_ctl))) { |
| 5030 |
case TLB_CONTROL_DO_NOTHING:
|
| 5031 |
break;
|
| 5032 |
case TLB_CONTROL_FLUSH_ALL_ASID:
|
| 5033 |
/* FIXME: this is not 100% correct but should work for now */
|
| 5034 |
tlb_flush(env, 1);
|
| 5035 |
break;
|
| 5036 |
} |
| 5037 |
|
| 5038 |
env->hflags2 |= HF2_GIF_MASK; |
| 5039 |
|
| 5040 |
if (int_ctl & V_IRQ_MASK) {
|
| 5041 |
env->interrupt_request |= CPU_INTERRUPT_VIRQ; |
| 5042 |
} |
| 5043 |
|
| 5044 |
/* maybe we need to inject an event */
|
| 5045 |
event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
|
| 5046 |
if (event_inj & SVM_EVTINJ_VALID) {
|
| 5047 |
uint8_t vector = event_inj & SVM_EVTINJ_VEC_MASK; |
| 5048 |
uint16_t valid_err = event_inj & SVM_EVTINJ_VALID_ERR; |
| 5049 |
uint32_t event_inj_err = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj_err));
|
| 5050 |
|
| 5051 |
qemu_log_mask(CPU_LOG_TB_IN_ASM, "Injecting(%#hx): ", valid_err);
|
| 5052 |
/* FIXME: need to implement valid_err */
|
| 5053 |
|