root / target-i386 / helper.c @ 0211e5af
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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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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 "host-utils.h" |
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//#define DEBUG_PCALL
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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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if (logfile)\
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fprintf(logfile, "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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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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/* modulo 17 table */
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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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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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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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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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/* 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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#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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/* 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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type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
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#ifdef DEBUG_PCALL
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if (loglevel & CPU_LOG_PCALL)
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fprintf(logfile, "switch_tss: sel=0x%04x type=%d src=%d\n", tss_selector, type, source);
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#endif
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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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} |
285 |
|
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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) { |
306 |
/* 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++) |
311 |
new_regs[i] = ldl_kernel(tss_base + (0x28 + i * 4)); |
312 |
for(i = 0; i < 6; i++) |
313 |
new_segs[i] = lduw_kernel(tss_base + (0x48 + i * 4)); |
314 |
new_ldt = lduw_kernel(tss_base + 0x60);
|
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new_trap = ldl_kernel(tss_base + 0x64);
|
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} else {
|
317 |
/* 16 bit */
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new_cr3 = 0;
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new_eip = lduw_kernel(tss_base + 0x0e);
|
320 |
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; |
323 |
for(i = 0; i < 4; i++) |
324 |
new_segs[i] = lduw_kernel(tss_base + (0x22 + i * 4)); |
325 |
new_ldt = lduw_kernel(tss_base + 0x2a);
|
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new_segs[R_FS] = 0;
|
327 |
new_segs[R_GS] = 0;
|
328 |
new_trap = 0;
|
329 |
} |
330 |
|
331 |
/* NOTE: we must avoid memory exceptions during the task switch,
|
332 |
so we make dummy accesses before */
|
333 |
/* XXX: it can still fail in some cases, so a bigger hack is
|
334 |
necessary to valid the TLB after having done the accesses */
|
335 |
|
336 |
v1 = ldub_kernel(env->tr.base); |
337 |
v2 = ldub_kernel(env->tr.base + old_tss_limit_max); |
338 |
stb_kernel(env->tr.base, v1); |
339 |
stb_kernel(env->tr.base + old_tss_limit_max, v2); |
340 |
|
341 |
/* clear busy bit (it is restartable) */
|
342 |
if (source == SWITCH_TSS_JMP || source == SWITCH_TSS_IRET) {
|
343 |
target_ulong ptr; |
344 |
uint32_t e2; |
345 |
ptr = env->gdt.base + (env->tr.selector & ~7);
|
346 |
e2 = ldl_kernel(ptr + 4);
|
347 |
e2 &= ~DESC_TSS_BUSY_MASK; |
348 |
stl_kernel(ptr + 4, e2);
|
349 |
} |
350 |
old_eflags = compute_eflags(); |
351 |
if (source == SWITCH_TSS_IRET)
|
352 |
old_eflags &= ~NT_MASK; |
353 |
|
354 |
/* save the current state in the old TSS */
|
355 |
if (type & 8) { |
356 |
/* 32 bit */
|
357 |
stl_kernel(env->tr.base + 0x20, next_eip);
|
358 |
stl_kernel(env->tr.base + 0x24, old_eflags);
|
359 |
stl_kernel(env->tr.base + (0x28 + 0 * 4), EAX); |
360 |
stl_kernel(env->tr.base + (0x28 + 1 * 4), ECX); |
361 |
stl_kernel(env->tr.base + (0x28 + 2 * 4), EDX); |
362 |
stl_kernel(env->tr.base + (0x28 + 3 * 4), EBX); |
363 |
stl_kernel(env->tr.base + (0x28 + 4 * 4), ESP); |
364 |
stl_kernel(env->tr.base + (0x28 + 5 * 4), EBP); |
365 |
stl_kernel(env->tr.base + (0x28 + 6 * 4), ESI); |
366 |
stl_kernel(env->tr.base + (0x28 + 7 * 4), EDI); |
367 |
for(i = 0; i < 6; i++) |
368 |
stw_kernel(env->tr.base + (0x48 + i * 4), env->segs[i].selector); |
369 |
} else {
|
370 |
/* 16 bit */
|
371 |
stw_kernel(env->tr.base + 0x0e, next_eip);
|
372 |
stw_kernel(env->tr.base + 0x10, old_eflags);
|
373 |
stw_kernel(env->tr.base + (0x12 + 0 * 2), EAX); |
374 |
stw_kernel(env->tr.base + (0x12 + 1 * 2), ECX); |
375 |
stw_kernel(env->tr.base + (0x12 + 2 * 2), EDX); |
376 |
stw_kernel(env->tr.base + (0x12 + 3 * 2), EBX); |
377 |
stw_kernel(env->tr.base + (0x12 + 4 * 2), ESP); |
378 |
stw_kernel(env->tr.base + (0x12 + 5 * 2), EBP); |
379 |
stw_kernel(env->tr.base + (0x12 + 6 * 2), ESI); |
380 |
stw_kernel(env->tr.base + (0x12 + 7 * 2), EDI); |
381 |
for(i = 0; i < 4; i++) |
382 |
stw_kernel(env->tr.base + (0x22 + i * 4), env->segs[i].selector); |
383 |
} |
384 |
|
385 |
/* now if an exception occurs, it will occurs in the next task
|
386 |
context */
|
387 |
|
388 |
if (source == SWITCH_TSS_CALL) {
|
389 |
stw_kernel(tss_base, env->tr.selector); |
390 |
new_eflags |= NT_MASK; |
391 |
} |
392 |
|
393 |
/* set busy bit */
|
394 |
if (source == SWITCH_TSS_JMP || source == SWITCH_TSS_CALL) {
|
395 |
target_ulong ptr; |
396 |
uint32_t e2; |
397 |
ptr = env->gdt.base + (tss_selector & ~7);
|
398 |
e2 = ldl_kernel(ptr + 4);
|
399 |
e2 |= DESC_TSS_BUSY_MASK; |
400 |
stl_kernel(ptr + 4, e2);
|
401 |
} |
402 |
|
403 |
/* set the new CPU state */
|
404 |
/* from this point, any exception which occurs can give problems */
|
405 |
env->cr[0] |= CR0_TS_MASK;
|
406 |
env->hflags |= HF_TS_MASK; |
407 |
env->tr.selector = tss_selector; |
408 |
env->tr.base = tss_base; |
409 |
env->tr.limit = tss_limit; |
410 |
env->tr.flags = e2 & ~DESC_TSS_BUSY_MASK; |
411 |
|
412 |
if ((type & 8) && (env->cr[0] & CR0_PG_MASK)) { |
413 |
cpu_x86_update_cr3(env, new_cr3); |
414 |
} |
415 |
|
416 |
/* load all registers without an exception, then reload them with
|
417 |
possible exception */
|
418 |
env->eip = new_eip; |
419 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | |
420 |
IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK; |
421 |
if (!(type & 8)) |
422 |
eflags_mask &= 0xffff;
|
423 |
load_eflags(new_eflags, eflags_mask); |
424 |
/* XXX: what to do in 16 bit case ? */
|
425 |
EAX = new_regs[0];
|
426 |
ECX = new_regs[1];
|
427 |
EDX = new_regs[2];
|
428 |
EBX = new_regs[3];
|
429 |
ESP = new_regs[4];
|
430 |
EBP = new_regs[5];
|
431 |
ESI = new_regs[6];
|
432 |
EDI = new_regs[7];
|
433 |
if (new_eflags & VM_MASK) {
|
434 |
for(i = 0; i < 6; i++) |
435 |
load_seg_vm(i, new_segs[i]); |
436 |
/* in vm86, CPL is always 3 */
|
437 |
cpu_x86_set_cpl(env, 3);
|
438 |
} else {
|
439 |
/* CPL is set the RPL of CS */
|
440 |
cpu_x86_set_cpl(env, new_segs[R_CS] & 3);
|
441 |
/* first just selectors as the rest may trigger exceptions */
|
442 |
for(i = 0; i < 6; i++) |
443 |
cpu_x86_load_seg_cache(env, i, new_segs[i], 0, 0, 0); |
444 |
} |
445 |
|
446 |
env->ldt.selector = new_ldt & ~4;
|
447 |
env->ldt.base = 0;
|
448 |
env->ldt.limit = 0;
|
449 |
env->ldt.flags = 0;
|
450 |
|
451 |
/* load the LDT */
|
452 |
if (new_ldt & 4) |
453 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
454 |
|
455 |
if ((new_ldt & 0xfffc) != 0) { |
456 |
dt = &env->gdt; |
457 |
index = new_ldt & ~7;
|
458 |
if ((index + 7) > dt->limit) |
459 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
460 |
ptr = dt->base + index; |
461 |
e1 = ldl_kernel(ptr); |
462 |
e2 = ldl_kernel(ptr + 4);
|
463 |
if ((e2 & DESC_S_MASK) || ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2) |
464 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
465 |
if (!(e2 & DESC_P_MASK))
|
466 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
467 |
load_seg_cache_raw_dt(&env->ldt, e1, e2); |
468 |
} |
469 |
|
470 |
/* load the segments */
|
471 |
if (!(new_eflags & VM_MASK)) {
|
472 |
tss_load_seg(R_CS, new_segs[R_CS]); |
473 |
tss_load_seg(R_SS, new_segs[R_SS]); |
474 |
tss_load_seg(R_ES, new_segs[R_ES]); |
475 |
tss_load_seg(R_DS, new_segs[R_DS]); |
476 |
tss_load_seg(R_FS, new_segs[R_FS]); |
477 |
tss_load_seg(R_GS, new_segs[R_GS]); |
478 |
} |
479 |
|
480 |
/* check that EIP is in the CS segment limits */
|
481 |
if (new_eip > env->segs[R_CS].limit) {
|
482 |
/* XXX: different exception if CALL ? */
|
483 |
raise_exception_err(EXCP0D_GPF, 0);
|
484 |
} |
485 |
} |
486 |
|
487 |
/* check if Port I/O is allowed in TSS */
|
488 |
static inline void check_io(int addr, int size) |
489 |
{ |
490 |
int io_offset, val, mask;
|
491 |
|
492 |
/* TSS must be a valid 32 bit one */
|
493 |
if (!(env->tr.flags & DESC_P_MASK) ||
|
494 |
((env->tr.flags >> DESC_TYPE_SHIFT) & 0xf) != 9 || |
495 |
env->tr.limit < 103)
|
496 |
goto fail;
|
497 |
io_offset = lduw_kernel(env->tr.base + 0x66);
|
498 |
io_offset += (addr >> 3);
|
499 |
/* Note: the check needs two bytes */
|
500 |
if ((io_offset + 1) > env->tr.limit) |
501 |
goto fail;
|
502 |
val = lduw_kernel(env->tr.base + io_offset); |
503 |
val >>= (addr & 7);
|
504 |
mask = (1 << size) - 1; |
505 |
/* all bits must be zero to allow the I/O */
|
506 |
if ((val & mask) != 0) { |
507 |
fail:
|
508 |
raise_exception_err(EXCP0D_GPF, 0);
|
509 |
} |
510 |
} |
511 |
|
512 |
void helper_check_iob(uint32_t t0)
|
513 |
{ |
514 |
check_io(t0, 1);
|
515 |
} |
516 |
|
517 |
void helper_check_iow(uint32_t t0)
|
518 |
{ |
519 |
check_io(t0, 2);
|
520 |
} |
521 |
|
522 |
void helper_check_iol(uint32_t t0)
|
523 |
{ |
524 |
check_io(t0, 4);
|
525 |
} |
526 |
|
527 |
void helper_outb(uint32_t port, uint32_t data)
|
528 |
{ |
529 |
cpu_outb(env, port, data & 0xff);
|
530 |
} |
531 |
|
532 |
target_ulong helper_inb(uint32_t port) |
533 |
{ |
534 |
return cpu_inb(env, port);
|
535 |
} |
536 |
|
537 |
void helper_outw(uint32_t port, uint32_t data)
|
538 |
{ |
539 |
cpu_outw(env, port, data & 0xffff);
|
540 |
} |
541 |
|
542 |
target_ulong helper_inw(uint32_t port) |
543 |
{ |
544 |
return cpu_inw(env, port);
|
545 |
} |
546 |
|
547 |
void helper_outl(uint32_t port, uint32_t data)
|
548 |
{ |
549 |
cpu_outl(env, port, data); |
550 |
} |
551 |
|
552 |
target_ulong helper_inl(uint32_t port) |
553 |
{ |
554 |
return cpu_inl(env, port);
|
555 |
} |
556 |
|
557 |
static inline unsigned int get_sp_mask(unsigned int e2) |
558 |
{ |
559 |
if (e2 & DESC_B_MASK)
|
560 |
return 0xffffffff; |
561 |
else
|
562 |
return 0xffff; |
563 |
} |
564 |
|
565 |
#ifdef TARGET_X86_64
|
566 |
#define SET_ESP(val, sp_mask)\
|
567 |
do {\
|
568 |
if ((sp_mask) == 0xffff)\ |
569 |
ESP = (ESP & ~0xffff) | ((val) & 0xffff);\ |
570 |
else if ((sp_mask) == 0xffffffffLL)\ |
571 |
ESP = (uint32_t)(val);\ |
572 |
else\
|
573 |
ESP = (val);\ |
574 |
} while (0) |
575 |
#else
|
576 |
#define SET_ESP(val, sp_mask) ESP = (ESP & ~(sp_mask)) | ((val) & (sp_mask))
|
577 |
#endif
|
578 |
|
579 |
/* XXX: add a is_user flag to have proper security support */
|
580 |
#define PUSHW(ssp, sp, sp_mask, val)\
|
581 |
{\ |
582 |
sp -= 2;\
|
583 |
stw_kernel((ssp) + (sp & (sp_mask)), (val));\ |
584 |
} |
585 |
|
586 |
#define PUSHL(ssp, sp, sp_mask, val)\
|
587 |
{\ |
588 |
sp -= 4;\
|
589 |
stl_kernel((ssp) + (sp & (sp_mask)), (val));\ |
590 |
} |
591 |
|
592 |
#define POPW(ssp, sp, sp_mask, val)\
|
593 |
{\ |
594 |
val = lduw_kernel((ssp) + (sp & (sp_mask)));\ |
595 |
sp += 2;\
|
596 |
} |
597 |
|
598 |
#define POPL(ssp, sp, sp_mask, val)\
|
599 |
{\ |
600 |
val = (uint32_t)ldl_kernel((ssp) + (sp & (sp_mask)));\ |
601 |
sp += 4;\
|
602 |
} |
603 |
|
604 |
/* protected mode interrupt */
|
605 |
static void do_interrupt_protected(int intno, int is_int, int error_code, |
606 |
unsigned int next_eip, int is_hw) |
607 |
{ |
608 |
SegmentCache *dt; |
609 |
target_ulong ptr, ssp; |
610 |
int type, dpl, selector, ss_dpl, cpl;
|
611 |
int has_error_code, new_stack, shift;
|
612 |
uint32_t e1, e2, offset, ss, esp, ss_e1, ss_e2; |
613 |
uint32_t old_eip, sp_mask; |
614 |
int svm_should_check = 1; |
615 |
|
616 |
if ((env->intercept & INTERCEPT_SVM_MASK) && !is_int && next_eip==-1) { |
617 |
next_eip = EIP; |
618 |
svm_should_check = 0;
|
619 |
} |
620 |
|
621 |
if (svm_should_check
|
622 |
&& (INTERCEPTEDl(_exceptions, 1 << intno)
|
623 |
&& !is_int)) { |
624 |
raise_interrupt(intno, is_int, error_code, 0);
|
625 |
} |
626 |
has_error_code = 0;
|
627 |
if (!is_int && !is_hw) {
|
628 |
switch(intno) {
|
629 |
case 8: |
630 |
case 10: |
631 |
case 11: |
632 |
case 12: |
633 |
case 13: |
634 |
case 14: |
635 |
case 17: |
636 |
has_error_code = 1;
|
637 |
break;
|
638 |
} |
639 |
} |
640 |
if (is_int)
|
641 |
old_eip = next_eip; |
642 |
else
|
643 |
old_eip = env->eip; |
644 |
|
645 |
dt = &env->idt; |
646 |
if (intno * 8 + 7 > dt->limit) |
647 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
648 |
ptr = dt->base + intno * 8;
|
649 |
e1 = ldl_kernel(ptr); |
650 |
e2 = ldl_kernel(ptr + 4);
|
651 |
/* check gate type */
|
652 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
653 |
switch(type) {
|
654 |
case 5: /* task gate */ |
655 |
/* must do that check here to return the correct error code */
|
656 |
if (!(e2 & DESC_P_MASK))
|
657 |
raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2); |
658 |
switch_tss(intno * 8, e1, e2, SWITCH_TSS_CALL, old_eip);
|
659 |
if (has_error_code) {
|
660 |
int type;
|
661 |
uint32_t mask; |
662 |
/* push the error code */
|
663 |
type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
|
664 |
shift = type >> 3;
|
665 |
if (env->segs[R_SS].flags & DESC_B_MASK)
|
666 |
mask = 0xffffffff;
|
667 |
else
|
668 |
mask = 0xffff;
|
669 |
esp = (ESP - (2 << shift)) & mask;
|
670 |
ssp = env->segs[R_SS].base + esp; |
671 |
if (shift)
|
672 |
stl_kernel(ssp, error_code); |
673 |
else
|
674 |
stw_kernel(ssp, error_code); |
675 |
SET_ESP(esp, mask); |
676 |
} |
677 |
return;
|
678 |
case 6: /* 286 interrupt gate */ |
679 |
case 7: /* 286 trap gate */ |
680 |
case 14: /* 386 interrupt gate */ |
681 |
case 15: /* 386 trap gate */ |
682 |
break;
|
683 |
default:
|
684 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
685 |
break;
|
686 |
} |
687 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
688 |
cpl = env->hflags & HF_CPL_MASK; |
689 |
/* check privledge if software int */
|
690 |
if (is_int && dpl < cpl)
|
691 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
692 |
/* check valid bit */
|
693 |
if (!(e2 & DESC_P_MASK))
|
694 |
raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2); |
695 |
selector = e1 >> 16;
|
696 |
offset = (e2 & 0xffff0000) | (e1 & 0x0000ffff); |
697 |
if ((selector & 0xfffc) == 0) |
698 |
raise_exception_err(EXCP0D_GPF, 0);
|
699 |
|
700 |
if (load_segment(&e1, &e2, selector) != 0) |
701 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
702 |
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
703 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
704 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
705 |
if (dpl > cpl)
|
706 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
707 |
if (!(e2 & DESC_P_MASK))
|
708 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
709 |
if (!(e2 & DESC_C_MASK) && dpl < cpl) {
|
710 |
/* to inner privilege */
|
711 |
get_ss_esp_from_tss(&ss, &esp, dpl); |
712 |
if ((ss & 0xfffc) == 0) |
713 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
714 |
if ((ss & 3) != dpl) |
715 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
716 |
if (load_segment(&ss_e1, &ss_e2, ss) != 0) |
717 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
718 |
ss_dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
719 |
if (ss_dpl != dpl)
|
720 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
721 |
if (!(ss_e2 & DESC_S_MASK) ||
|
722 |
(ss_e2 & DESC_CS_MASK) || |
723 |
!(ss_e2 & DESC_W_MASK)) |
724 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
725 |
if (!(ss_e2 & DESC_P_MASK))
|
726 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
727 |
new_stack = 1;
|
728 |
sp_mask = get_sp_mask(ss_e2); |
729 |
ssp = get_seg_base(ss_e1, ss_e2); |
730 |
} else if ((e2 & DESC_C_MASK) || dpl == cpl) { |
731 |
/* to same privilege */
|
732 |
if (env->eflags & VM_MASK)
|
733 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
734 |
new_stack = 0;
|
735 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
736 |
ssp = env->segs[R_SS].base; |
737 |
esp = ESP; |
738 |
dpl = cpl; |
739 |
} else {
|
740 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
741 |
new_stack = 0; /* avoid warning */ |
742 |
sp_mask = 0; /* avoid warning */ |
743 |
ssp = 0; /* avoid warning */ |
744 |
esp = 0; /* avoid warning */ |
745 |
} |
746 |
|
747 |
shift = type >> 3;
|
748 |
|
749 |
#if 0
|
750 |
/* XXX: check that enough room is available */
|
751 |
push_size = 6 + (new_stack << 2) + (has_error_code << 1);
|
752 |
if (env->eflags & VM_MASK)
|
753 |
push_size += 8;
|
754 |
push_size <<= shift;
|
755 |
#endif
|
756 |
if (shift == 1) { |
757 |
if (new_stack) {
|
758 |
if (env->eflags & VM_MASK) {
|
759 |
PUSHL(ssp, esp, sp_mask, env->segs[R_GS].selector); |
760 |
PUSHL(ssp, esp, sp_mask, env->segs[R_FS].selector); |
761 |
PUSHL(ssp, esp, sp_mask, env->segs[R_DS].selector); |
762 |
PUSHL(ssp, esp, sp_mask, env->segs[R_ES].selector); |
763 |
} |
764 |
PUSHL(ssp, esp, sp_mask, env->segs[R_SS].selector); |
765 |
PUSHL(ssp, esp, sp_mask, ESP); |
766 |
} |
767 |
PUSHL(ssp, esp, sp_mask, compute_eflags()); |
768 |
PUSHL(ssp, esp, sp_mask, env->segs[R_CS].selector); |
769 |
PUSHL(ssp, esp, sp_mask, old_eip); |
770 |
if (has_error_code) {
|
771 |
PUSHL(ssp, esp, sp_mask, error_code); |
772 |
} |
773 |
} else {
|
774 |
if (new_stack) {
|
775 |
if (env->eflags & VM_MASK) {
|
776 |
PUSHW(ssp, esp, sp_mask, env->segs[R_GS].selector); |
777 |
PUSHW(ssp, esp, sp_mask, env->segs[R_FS].selector); |
778 |
PUSHW(ssp, esp, sp_mask, env->segs[R_DS].selector); |
779 |
PUSHW(ssp, esp, sp_mask, env->segs[R_ES].selector); |
780 |
} |
781 |
PUSHW(ssp, esp, sp_mask, env->segs[R_SS].selector); |
782 |
PUSHW(ssp, esp, sp_mask, ESP); |
783 |
} |
784 |
PUSHW(ssp, esp, sp_mask, compute_eflags()); |
785 |
PUSHW(ssp, esp, sp_mask, env->segs[R_CS].selector); |
786 |
PUSHW(ssp, esp, sp_mask, old_eip); |
787 |
if (has_error_code) {
|
788 |
PUSHW(ssp, esp, sp_mask, error_code); |
789 |
} |
790 |
} |
791 |
|
792 |
if (new_stack) {
|
793 |
if (env->eflags & VM_MASK) {
|
794 |
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0, 0); |
795 |
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0, 0); |
796 |
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0, 0); |
797 |
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0, 0); |
798 |
} |
799 |
ss = (ss & ~3) | dpl;
|
800 |
cpu_x86_load_seg_cache(env, R_SS, ss, |
801 |
ssp, get_seg_limit(ss_e1, ss_e2), ss_e2); |
802 |
} |
803 |
SET_ESP(esp, sp_mask); |
804 |
|
805 |
selector = (selector & ~3) | dpl;
|
806 |
cpu_x86_load_seg_cache(env, R_CS, selector, |
807 |
get_seg_base(e1, e2), |
808 |
get_seg_limit(e1, e2), |
809 |
e2); |
810 |
cpu_x86_set_cpl(env, dpl); |
811 |
env->eip = offset; |
812 |
|
813 |
/* interrupt gate clear IF mask */
|
814 |
if ((type & 1) == 0) { |
815 |
env->eflags &= ~IF_MASK; |
816 |
} |
817 |
env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK); |
818 |
} |
819 |
|
820 |
#ifdef TARGET_X86_64
|
821 |
|
822 |
#define PUSHQ(sp, val)\
|
823 |
{\ |
824 |
sp -= 8;\
|
825 |
stq_kernel(sp, (val));\ |
826 |
} |
827 |
|
828 |
#define POPQ(sp, val)\
|
829 |
{\ |
830 |
val = ldq_kernel(sp);\ |
831 |
sp += 8;\
|
832 |
} |
833 |
|
834 |
static inline target_ulong get_rsp_from_tss(int level) |
835 |
{ |
836 |
int index;
|
837 |
|
838 |
#if 0
|
839 |
printf("TR: base=" TARGET_FMT_lx " limit=%x\n",
|
840 |
env->tr.base, env->tr.limit);
|
841 |
#endif
|
842 |
|
843 |
if (!(env->tr.flags & DESC_P_MASK))
|
844 |
cpu_abort(env, "invalid tss");
|
845 |
index = 8 * level + 4; |
846 |
if ((index + 7) > env->tr.limit) |
847 |
raise_exception_err(EXCP0A_TSS, env->tr.selector & 0xfffc);
|
848 |
return ldq_kernel(env->tr.base + index);
|
849 |
} |
850 |
|
851 |
/* 64 bit interrupt */
|
852 |
static void do_interrupt64(int intno, int is_int, int error_code, |
853 |
target_ulong next_eip, int is_hw)
|
854 |
{ |
855 |
SegmentCache *dt; |
856 |
target_ulong ptr; |
857 |
int type, dpl, selector, cpl, ist;
|
858 |
int has_error_code, new_stack;
|
859 |
uint32_t e1, e2, e3, ss; |
860 |
target_ulong old_eip, esp, offset; |
861 |
int svm_should_check = 1; |
862 |
|
863 |
if ((env->intercept & INTERCEPT_SVM_MASK) && !is_int && next_eip==-1) { |
864 |
next_eip = EIP; |
865 |
svm_should_check = 0;
|
866 |
} |
867 |
if (svm_should_check
|
868 |
&& INTERCEPTEDl(_exceptions, 1 << intno)
|
869 |
&& !is_int) { |
870 |
raise_interrupt(intno, is_int, error_code, 0);
|
871 |
} |
872 |
has_error_code = 0;
|
873 |
if (!is_int && !is_hw) {
|
874 |
switch(intno) {
|
875 |
case 8: |
876 |
case 10: |
877 |
case 11: |
878 |
case 12: |
879 |
case 13: |
880 |
case 14: |
881 |
case 17: |
882 |
has_error_code = 1;
|
883 |
break;
|
884 |
} |
885 |
} |
886 |
if (is_int)
|
887 |
old_eip = next_eip; |
888 |
else
|
889 |
old_eip = env->eip; |
890 |
|
891 |
dt = &env->idt; |
892 |
if (intno * 16 + 15 > dt->limit) |
893 |
raise_exception_err(EXCP0D_GPF, intno * 16 + 2); |
894 |
ptr = dt->base + intno * 16;
|
895 |
e1 = ldl_kernel(ptr); |
896 |
e2 = ldl_kernel(ptr + 4);
|
897 |
e3 = ldl_kernel(ptr + 8);
|
898 |
/* check gate type */
|
899 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
900 |
switch(type) {
|
901 |
case 14: /* 386 interrupt gate */ |
902 |
case 15: /* 386 trap gate */ |
903 |
break;
|
904 |
default:
|
905 |
raise_exception_err(EXCP0D_GPF, intno * 16 + 2); |
906 |
break;
|
907 |
} |
908 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
909 |
cpl = env->hflags & HF_CPL_MASK; |
910 |
/* check privledge if software int */
|
911 |
if (is_int && dpl < cpl)
|
912 |
raise_exception_err(EXCP0D_GPF, intno * 16 + 2); |
913 |
/* check valid bit */
|
914 |
if (!(e2 & DESC_P_MASK))
|
915 |
raise_exception_err(EXCP0B_NOSEG, intno * 16 + 2); |
916 |
selector = e1 >> 16;
|
917 |
offset = ((target_ulong)e3 << 32) | (e2 & 0xffff0000) | (e1 & 0x0000ffff); |
918 |
ist = e2 & 7;
|
919 |
if ((selector & 0xfffc) == 0) |
920 |
raise_exception_err(EXCP0D_GPF, 0);
|
921 |
|
922 |
if (load_segment(&e1, &e2, selector) != 0) |
923 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
924 |
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
925 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
926 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
927 |
if (dpl > cpl)
|
928 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
929 |
if (!(e2 & DESC_P_MASK))
|
930 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
931 |
if (!(e2 & DESC_L_MASK) || (e2 & DESC_B_MASK))
|
932 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
933 |
if ((!(e2 & DESC_C_MASK) && dpl < cpl) || ist != 0) { |
934 |
/* to inner privilege */
|
935 |
if (ist != 0) |
936 |
esp = get_rsp_from_tss(ist + 3);
|
937 |
else
|
938 |
esp = get_rsp_from_tss(dpl); |
939 |
esp &= ~0xfLL; /* align stack */ |
940 |
ss = 0;
|
941 |
new_stack = 1;
|
942 |
} else if ((e2 & DESC_C_MASK) || dpl == cpl) { |
943 |
/* to same privilege */
|
944 |
if (env->eflags & VM_MASK)
|
945 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
946 |
new_stack = 0;
|
947 |
if (ist != 0) |
948 |
esp = get_rsp_from_tss(ist + 3);
|
949 |
else
|
950 |
esp = ESP; |
951 |
esp &= ~0xfLL; /* align stack */ |
952 |
dpl = cpl; |
953 |
} else {
|
954 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
955 |
new_stack = 0; /* avoid warning */ |
956 |
esp = 0; /* avoid warning */ |
957 |
} |
958 |
|
959 |
PUSHQ(esp, env->segs[R_SS].selector); |
960 |
PUSHQ(esp, ESP); |
961 |
PUSHQ(esp, compute_eflags()); |
962 |
PUSHQ(esp, env->segs[R_CS].selector); |
963 |
PUSHQ(esp, old_eip); |
964 |
if (has_error_code) {
|
965 |
PUSHQ(esp, error_code); |
966 |
} |
967 |
|
968 |
if (new_stack) {
|
969 |
ss = 0 | dpl;
|
970 |
cpu_x86_load_seg_cache(env, R_SS, ss, 0, 0, 0); |
971 |
} |
972 |
ESP = esp; |
973 |
|
974 |
selector = (selector & ~3) | dpl;
|
975 |
cpu_x86_load_seg_cache(env, R_CS, selector, |
976 |
get_seg_base(e1, e2), |
977 |
get_seg_limit(e1, e2), |
978 |
e2); |
979 |
cpu_x86_set_cpl(env, dpl); |
980 |
env->eip = offset; |
981 |
|
982 |
/* interrupt gate clear IF mask */
|
983 |
if ((type & 1) == 0) { |
984 |
env->eflags &= ~IF_MASK; |
985 |
} |
986 |
env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK); |
987 |
} |
988 |
#endif
|
989 |
|
990 |
#if defined(CONFIG_USER_ONLY)
|
991 |
void helper_syscall(int next_eip_addend) |
992 |
{ |
993 |
env->exception_index = EXCP_SYSCALL; |
994 |
env->exception_next_eip = env->eip + next_eip_addend; |
995 |
cpu_loop_exit(); |
996 |
} |
997 |
#else
|
998 |
void helper_syscall(int next_eip_addend) |
999 |
{ |
1000 |
int selector;
|
1001 |
|
1002 |
if (!(env->efer & MSR_EFER_SCE)) {
|
1003 |
raise_exception_err(EXCP06_ILLOP, 0);
|
1004 |
} |
1005 |
selector = (env->star >> 32) & 0xffff; |
1006 |
#ifdef TARGET_X86_64
|
1007 |
if (env->hflags & HF_LMA_MASK) {
|
1008 |
int code64;
|
1009 |
|
1010 |
ECX = env->eip + next_eip_addend; |
1011 |
env->regs[11] = compute_eflags();
|
1012 |
|
1013 |
code64 = env->hflags & HF_CS64_MASK; |
1014 |
|
1015 |
cpu_x86_set_cpl(env, 0);
|
1016 |
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
|
1017 |
0, 0xffffffff, |
1018 |
DESC_G_MASK | DESC_P_MASK | |
1019 |
DESC_S_MASK | |
1020 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK); |
1021 |
cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc, |
1022 |
0, 0xffffffff, |
1023 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1024 |
DESC_S_MASK | |
1025 |
DESC_W_MASK | DESC_A_MASK); |
1026 |
env->eflags &= ~env->fmask; |
1027 |
load_eflags(env->eflags, 0);
|
1028 |
if (code64)
|
1029 |
env->eip = env->lstar; |
1030 |
else
|
1031 |
env->eip = env->cstar; |
1032 |
} else
|
1033 |
#endif
|
1034 |
{ |
1035 |
ECX = (uint32_t)(env->eip + next_eip_addend); |
1036 |
|
1037 |
cpu_x86_set_cpl(env, 0);
|
1038 |
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
|
1039 |
0, 0xffffffff, |
1040 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1041 |
DESC_S_MASK | |
1042 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
1043 |
cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc, |
1044 |
0, 0xffffffff, |
1045 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1046 |
DESC_S_MASK | |
1047 |
DESC_W_MASK | DESC_A_MASK); |
1048 |
env->eflags &= ~(IF_MASK | RF_MASK | VM_MASK); |
1049 |
env->eip = (uint32_t)env->star; |
1050 |
} |
1051 |
} |
1052 |
#endif
|
1053 |
|
1054 |
void helper_sysret(int dflag) |
1055 |
{ |
1056 |
int cpl, selector;
|
1057 |
|
1058 |
if (!(env->efer & MSR_EFER_SCE)) {
|
1059 |
raise_exception_err(EXCP06_ILLOP, 0);
|
1060 |
} |
1061 |
cpl = env->hflags & HF_CPL_MASK; |
1062 |
if (!(env->cr[0] & CR0_PE_MASK) || cpl != 0) { |
1063 |
raise_exception_err(EXCP0D_GPF, 0);
|
1064 |
} |
1065 |
selector = (env->star >> 48) & 0xffff; |
1066 |
#ifdef TARGET_X86_64
|
1067 |
if (env->hflags & HF_LMA_MASK) {
|
1068 |
if (dflag == 2) { |
1069 |
cpu_x86_load_seg_cache(env, R_CS, (selector + 16) | 3, |
1070 |
0, 0xffffffff, |
1071 |
DESC_G_MASK | DESC_P_MASK | |
1072 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1073 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | |
1074 |
DESC_L_MASK); |
1075 |
env->eip = ECX; |
1076 |
} else {
|
1077 |
cpu_x86_load_seg_cache(env, R_CS, selector | 3,
|
1078 |
0, 0xffffffff, |
1079 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1080 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1081 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
1082 |
env->eip = (uint32_t)ECX; |
1083 |
} |
1084 |
cpu_x86_load_seg_cache(env, R_SS, selector + 8,
|
1085 |
0, 0xffffffff, |
1086 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1087 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1088 |
DESC_W_MASK | DESC_A_MASK); |
1089 |
load_eflags((uint32_t)(env->regs[11]), TF_MASK | AC_MASK | ID_MASK |
|
1090 |
IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK); |
1091 |
cpu_x86_set_cpl(env, 3);
|
1092 |
} else
|
1093 |
#endif
|
1094 |
{ |
1095 |
cpu_x86_load_seg_cache(env, R_CS, selector | 3,
|
1096 |
0, 0xffffffff, |
1097 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1098 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1099 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
1100 |
env->eip = (uint32_t)ECX; |
1101 |
cpu_x86_load_seg_cache(env, R_SS, selector + 8,
|
1102 |
0, 0xffffffff, |
1103 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1104 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1105 |
DESC_W_MASK | DESC_A_MASK); |
1106 |
env->eflags |= IF_MASK; |
1107 |
cpu_x86_set_cpl(env, 3);
|
1108 |
} |
1109 |
#ifdef USE_KQEMU
|
1110 |
if (kqemu_is_ok(env)) {
|
1111 |
if (env->hflags & HF_LMA_MASK)
|
1112 |
CC_OP = CC_OP_EFLAGS; |
1113 |
env->exception_index = -1;
|
1114 |
cpu_loop_exit(); |
1115 |
} |
1116 |
#endif
|
1117 |
} |
1118 |
|
1119 |
/* real mode interrupt */
|
1120 |
static void do_interrupt_real(int intno, int is_int, int error_code, |
1121 |
unsigned int next_eip) |
1122 |
{ |
1123 |
SegmentCache *dt; |
1124 |
target_ulong ptr, ssp; |
1125 |
int selector;
|
1126 |
uint32_t offset, esp; |
1127 |
uint32_t old_cs, old_eip; |
1128 |
int svm_should_check = 1; |
1129 |
|
1130 |
if ((env->intercept & INTERCEPT_SVM_MASK) && !is_int && next_eip==-1) { |
1131 |
next_eip = EIP; |
1132 |
svm_should_check = 0;
|
1133 |
} |
1134 |
if (svm_should_check
|
1135 |
&& INTERCEPTEDl(_exceptions, 1 << intno)
|
1136 |
&& !is_int) { |
1137 |
raise_interrupt(intno, is_int, error_code, 0);
|
1138 |
} |
1139 |
/* real mode (simpler !) */
|
1140 |
dt = &env->idt; |
1141 |
if (intno * 4 + 3 > dt->limit) |
1142 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
1143 |
ptr = dt->base + intno * 4;
|
1144 |
offset = lduw_kernel(ptr); |
1145 |
selector = lduw_kernel(ptr + 2);
|
1146 |
esp = ESP; |
1147 |
ssp = env->segs[R_SS].base; |
1148 |
if (is_int)
|
1149 |
old_eip = next_eip; |
1150 |
else
|
1151 |
old_eip = env->eip; |
1152 |
old_cs = env->segs[R_CS].selector; |
1153 |
/* XXX: use SS segment size ? */
|
1154 |
PUSHW(ssp, esp, 0xffff, compute_eflags());
|
1155 |
PUSHW(ssp, esp, 0xffff, old_cs);
|
1156 |
PUSHW(ssp, esp, 0xffff, old_eip);
|
1157 |
|
1158 |
/* update processor state */
|
1159 |
ESP = (ESP & ~0xffff) | (esp & 0xffff); |
1160 |
env->eip = offset; |
1161 |
env->segs[R_CS].selector = selector; |
1162 |
env->segs[R_CS].base = (selector << 4);
|
1163 |
env->eflags &= ~(IF_MASK | TF_MASK | AC_MASK | RF_MASK); |
1164 |
} |
1165 |
|
1166 |
/* fake user mode interrupt */
|
1167 |
void do_interrupt_user(int intno, int is_int, int error_code, |
1168 |
target_ulong next_eip) |
1169 |
{ |
1170 |
SegmentCache *dt; |
1171 |
target_ulong ptr; |
1172 |
int dpl, cpl, shift;
|
1173 |
uint32_t e2; |
1174 |
|
1175 |
dt = &env->idt; |
1176 |
if (env->hflags & HF_LMA_MASK) {
|
1177 |
shift = 4;
|
1178 |
} else {
|
1179 |
shift = 3;
|
1180 |
} |
1181 |
ptr = dt->base + (intno << shift); |
1182 |
e2 = ldl_kernel(ptr + 4);
|
1183 |
|
1184 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
1185 |
cpl = env->hflags & HF_CPL_MASK; |
1186 |
/* check privledge if software int */
|
1187 |
if (is_int && dpl < cpl)
|
1188 |
raise_exception_err(EXCP0D_GPF, (intno << shift) + 2);
|
1189 |
|
1190 |
/* Since we emulate only user space, we cannot do more than
|
1191 |
exiting the emulation with the suitable exception and error
|
1192 |
code */
|
1193 |
if (is_int)
|
1194 |
EIP = next_eip; |
1195 |
} |
1196 |
|
1197 |
/*
|
1198 |
* Begin execution of an interruption. is_int is TRUE if coming from
|
1199 |
* the int instruction. next_eip is the EIP value AFTER the interrupt
|
1200 |
* instruction. It is only relevant if is_int is TRUE.
|
1201 |
*/
|
1202 |
void do_interrupt(int intno, int is_int, int error_code, |
1203 |
target_ulong next_eip, int is_hw)
|
1204 |
{ |
1205 |
if (loglevel & CPU_LOG_INT) {
|
1206 |
if ((env->cr[0] & CR0_PE_MASK)) { |
1207 |
static int count; |
1208 |
fprintf(logfile, "%6d: v=%02x e=%04x i=%d cpl=%d IP=%04x:" TARGET_FMT_lx " pc=" TARGET_FMT_lx " SP=%04x:" TARGET_FMT_lx, |
1209 |
count, intno, error_code, is_int, |
1210 |
env->hflags & HF_CPL_MASK, |
1211 |
env->segs[R_CS].selector, EIP, |
1212 |
(int)env->segs[R_CS].base + EIP,
|
1213 |
env->segs[R_SS].selector, ESP); |
1214 |
if (intno == 0x0e) { |
1215 |
fprintf(logfile, " CR2=" TARGET_FMT_lx, env->cr[2]); |
1216 |
} else {
|
1217 |
fprintf(logfile, " EAX=" TARGET_FMT_lx, EAX);
|
1218 |
} |
1219 |
fprintf(logfile, "\n");
|
1220 |
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP); |
1221 |
#if 0
|
1222 |
{
|
1223 |
int i;
|
1224 |
uint8_t *ptr;
|
1225 |
fprintf(logfile, " code=");
|
1226 |
ptr = env->segs[R_CS].base + env->eip;
|
1227 |
for(i = 0; i < 16; i++) {
|
1228 |
fprintf(logfile, " %02x", ldub(ptr + i));
|
1229 |
}
|
1230 |
fprintf(logfile, "\n");
|
1231 |
}
|
1232 |
#endif
|
1233 |
count++; |
1234 |
} |
1235 |
} |
1236 |
if (env->cr[0] & CR0_PE_MASK) { |
1237 |
#if TARGET_X86_64
|
1238 |
if (env->hflags & HF_LMA_MASK) {
|
1239 |
do_interrupt64(intno, is_int, error_code, next_eip, is_hw); |
1240 |
} else
|
1241 |
#endif
|
1242 |
{ |
1243 |
do_interrupt_protected(intno, is_int, error_code, next_eip, is_hw); |
1244 |
} |
1245 |
} else {
|
1246 |
do_interrupt_real(intno, is_int, error_code, next_eip); |
1247 |
} |
1248 |
} |
1249 |
|
1250 |
/*
|
1251 |
* Check nested exceptions and change to double or triple fault if
|
1252 |
* needed. It should only be called, if this is not an interrupt.
|
1253 |
* Returns the new exception number.
|
1254 |
*/
|
1255 |
static int check_exception(int intno, int *error_code) |
1256 |
{ |
1257 |
int first_contributory = env->old_exception == 0 || |
1258 |
(env->old_exception >= 10 &&
|
1259 |
env->old_exception <= 13);
|
1260 |
int second_contributory = intno == 0 || |
1261 |
(intno >= 10 && intno <= 13); |
1262 |
|
1263 |
if (loglevel & CPU_LOG_INT)
|
1264 |
fprintf(logfile, "check_exception old: 0x%x new 0x%x\n",
|
1265 |
env->old_exception, intno); |
1266 |
|
1267 |
if (env->old_exception == EXCP08_DBLE)
|
1268 |
cpu_abort(env, "triple fault");
|
1269 |
|
1270 |
if ((first_contributory && second_contributory)
|
1271 |
|| (env->old_exception == EXCP0E_PAGE && |
1272 |
(second_contributory || (intno == EXCP0E_PAGE)))) { |
1273 |
intno = EXCP08_DBLE; |
1274 |
*error_code = 0;
|
1275 |
} |
1276 |
|
1277 |
if (second_contributory || (intno == EXCP0E_PAGE) ||
|
1278 |
(intno == EXCP08_DBLE)) |
1279 |
env->old_exception = intno; |
1280 |
|
1281 |
return intno;
|
1282 |
} |
1283 |
|
1284 |
/*
|
1285 |
* Signal an interruption. It is executed in the main CPU loop.
|
1286 |
* is_int is TRUE if coming from the int instruction. next_eip is the
|
1287 |
* EIP value AFTER the interrupt instruction. It is only relevant if
|
1288 |
* is_int is TRUE.
|
1289 |
*/
|
1290 |
void raise_interrupt(int intno, int is_int, int error_code, |
1291 |
int next_eip_addend)
|
1292 |
{ |
1293 |
if (!is_int) {
|
1294 |
helper_svm_check_intercept_param(SVM_EXIT_EXCP_BASE + intno, error_code); |
1295 |
intno = check_exception(intno, &error_code); |
1296 |
} |
1297 |
|
1298 |
env->exception_index = intno; |
1299 |
env->error_code = error_code; |
1300 |
env->exception_is_int = is_int; |
1301 |
env->exception_next_eip = env->eip + next_eip_addend; |
1302 |
cpu_loop_exit(); |
1303 |
} |
1304 |
|
1305 |
/* same as raise_exception_err, but do not restore global registers */
|
1306 |
static void raise_exception_err_norestore(int exception_index, int error_code) |
1307 |
{ |
1308 |
exception_index = check_exception(exception_index, &error_code); |
1309 |
|
1310 |
env->exception_index = exception_index; |
1311 |
env->error_code = error_code; |
1312 |
env->exception_is_int = 0;
|
1313 |
env->exception_next_eip = 0;
|
1314 |
longjmp(env->jmp_env, 1);
|
1315 |
} |
1316 |
|
1317 |
/* shortcuts to generate exceptions */
|
1318 |
|
1319 |
void (raise_exception_err)(int exception_index, int error_code) |
1320 |
{ |
1321 |
raise_interrupt(exception_index, 0, error_code, 0); |
1322 |
} |
1323 |
|
1324 |
void raise_exception(int exception_index) |
1325 |
{ |
1326 |
raise_interrupt(exception_index, 0, 0, 0); |
1327 |
} |
1328 |
|
1329 |
/* SMM support */
|
1330 |
|
1331 |
#if defined(CONFIG_USER_ONLY)
|
1332 |
|
1333 |
void do_smm_enter(void) |
1334 |
{ |
1335 |
} |
1336 |
|
1337 |
void helper_rsm(void) |
1338 |
{ |
1339 |
} |
1340 |
|
1341 |
#else
|
1342 |
|
1343 |
#ifdef TARGET_X86_64
|
1344 |
#define SMM_REVISION_ID 0x00020064 |
1345 |
#else
|
1346 |
#define SMM_REVISION_ID 0x00020000 |
1347 |
#endif
|
1348 |
|
1349 |
void do_smm_enter(void) |
1350 |
{ |
1351 |
target_ulong sm_state; |
1352 |
SegmentCache *dt; |
1353 |
int i, offset;
|
1354 |
|
1355 |
if (loglevel & CPU_LOG_INT) {
|
1356 |
fprintf(logfile, "SMM: enter\n");
|
1357 |
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP); |
1358 |
} |
1359 |
|
1360 |
env->hflags |= HF_SMM_MASK; |
1361 |
cpu_smm_update(env); |
1362 |
|
1363 |
sm_state = env->smbase + 0x8000;
|
1364 |
|
1365 |
#ifdef TARGET_X86_64
|
1366 |
for(i = 0; i < 6; i++) { |
1367 |
dt = &env->segs[i]; |
1368 |
offset = 0x7e00 + i * 16; |
1369 |
stw_phys(sm_state + offset, dt->selector); |
1370 |
stw_phys(sm_state + offset + 2, (dt->flags >> 8) & 0xf0ff); |
1371 |
stl_phys(sm_state + offset + 4, dt->limit);
|
1372 |
stq_phys(sm_state + offset + 8, dt->base);
|
1373 |
} |
1374 |
|
1375 |
stq_phys(sm_state + 0x7e68, env->gdt.base);
|
1376 |
stl_phys(sm_state + 0x7e64, env->gdt.limit);
|
1377 |
|
1378 |
stw_phys(sm_state + 0x7e70, env->ldt.selector);
|
1379 |
stq_phys(sm_state + 0x7e78, env->ldt.base);
|
1380 |
stl_phys(sm_state + 0x7e74, env->ldt.limit);
|
1381 |
stw_phys(sm_state + 0x7e72, (env->ldt.flags >> 8) & 0xf0ff); |
1382 |
|
1383 |
stq_phys(sm_state + 0x7e88, env->idt.base);
|
1384 |
stl_phys(sm_state + 0x7e84, env->idt.limit);
|
1385 |
|
1386 |
stw_phys(sm_state + 0x7e90, env->tr.selector);
|
1387 |
stq_phys(sm_state + 0x7e98, env->tr.base);
|
1388 |
stl_phys(sm_state + 0x7e94, env->tr.limit);
|
1389 |
stw_phys(sm_state + 0x7e92, (env->tr.flags >> 8) & 0xf0ff); |
1390 |
|
1391 |
stq_phys(sm_state + 0x7ed0, env->efer);
|
1392 |
|
1393 |
stq_phys(sm_state + 0x7ff8, EAX);
|
1394 |
stq_phys(sm_state + 0x7ff0, ECX);
|
1395 |
stq_phys(sm_state + 0x7fe8, EDX);
|
1396 |
stq_phys(sm_state + 0x7fe0, EBX);
|
1397 |
stq_phys(sm_state + 0x7fd8, ESP);
|
1398 |
stq_phys(sm_state + 0x7fd0, EBP);
|
1399 |
stq_phys(sm_state + 0x7fc8, ESI);
|
1400 |
stq_phys(sm_state + 0x7fc0, EDI);
|
1401 |
for(i = 8; i < 16; i++) |
1402 |
stq_phys(sm_state + 0x7ff8 - i * 8, env->regs[i]); |
1403 |
stq_phys(sm_state + 0x7f78, env->eip);
|
1404 |
stl_phys(sm_state + 0x7f70, compute_eflags());
|
1405 |
stl_phys(sm_state + 0x7f68, env->dr[6]); |
1406 |
stl_phys(sm_state + 0x7f60, env->dr[7]); |
1407 |
|
1408 |
stl_phys(sm_state + 0x7f48, env->cr[4]); |
1409 |
stl_phys(sm_state + 0x7f50, env->cr[3]); |
1410 |
stl_phys(sm_state + 0x7f58, env->cr[0]); |
1411 |
|
1412 |
stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
|
1413 |
stl_phys(sm_state + 0x7f00, env->smbase);
|
1414 |
#else
|
1415 |
stl_phys(sm_state + 0x7ffc, env->cr[0]); |
1416 |
stl_phys(sm_state + 0x7ff8, env->cr[3]); |
1417 |
stl_phys(sm_state + 0x7ff4, compute_eflags());
|
1418 |
stl_phys(sm_state + 0x7ff0, env->eip);
|
1419 |
stl_phys(sm_state + 0x7fec, EDI);
|
1420 |
stl_phys(sm_state + 0x7fe8, ESI);
|
1421 |
stl_phys(sm_state + 0x7fe4, EBP);
|
1422 |
stl_phys(sm_state + 0x7fe0, ESP);
|
1423 |
stl_phys(sm_state + 0x7fdc, EBX);
|
1424 |
stl_phys(sm_state + 0x7fd8, EDX);
|
1425 |
stl_phys(sm_state + 0x7fd4, ECX);
|
1426 |
stl_phys(sm_state + 0x7fd0, EAX);
|
1427 |
stl_phys(sm_state + 0x7fcc, env->dr[6]); |
1428 |
stl_phys(sm_state + 0x7fc8, env->dr[7]); |
1429 |
|
1430 |
stl_phys(sm_state + 0x7fc4, env->tr.selector);
|
1431 |
stl_phys(sm_state + 0x7f64, env->tr.base);
|
1432 |
stl_phys(sm_state + 0x7f60, env->tr.limit);
|
1433 |
stl_phys(sm_state + 0x7f5c, (env->tr.flags >> 8) & 0xf0ff); |
1434 |
|
1435 |
stl_phys(sm_state + 0x7fc0, env->ldt.selector);
|
1436 |
stl_phys(sm_state + 0x7f80, env->ldt.base);
|
1437 |
stl_phys(sm_state + 0x7f7c, env->ldt.limit);
|
1438 |
stl_phys(sm_state + 0x7f78, (env->ldt.flags >> 8) & 0xf0ff); |
1439 |
|
1440 |
stl_phys(sm_state + 0x7f74, env->gdt.base);
|
1441 |
stl_phys(sm_state + 0x7f70, env->gdt.limit);
|
1442 |
|
1443 |
stl_phys(sm_state + 0x7f58, env->idt.base);
|
1444 |
stl_phys(sm_state + 0x7f54, env->idt.limit);
|
1445 |
|
1446 |
for(i = 0; i < 6; i++) { |
1447 |
dt = &env->segs[i]; |
1448 |
if (i < 3) |
1449 |
offset = 0x7f84 + i * 12; |
1450 |
else
|
1451 |
offset = 0x7f2c + (i - 3) * 12; |
1452 |
stl_phys(sm_state + 0x7fa8 + i * 4, dt->selector); |
1453 |
stl_phys(sm_state + offset + 8, dt->base);
|
1454 |
stl_phys(sm_state + offset + 4, dt->limit);
|
1455 |
stl_phys(sm_state + offset, (dt->flags >> 8) & 0xf0ff); |
1456 |
} |
1457 |
stl_phys(sm_state + 0x7f14, env->cr[4]); |
1458 |
|
1459 |
stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
|
1460 |
stl_phys(sm_state + 0x7ef8, env->smbase);
|
1461 |
#endif
|
1462 |
/* init SMM cpu state */
|
1463 |
|
1464 |
#ifdef TARGET_X86_64
|
1465 |
env->efer = 0;
|
1466 |
env->hflags &= ~HF_LMA_MASK; |
1467 |
#endif
|
1468 |
load_eflags(0, ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
|
1469 |
env->eip = 0x00008000;
|
1470 |
cpu_x86_load_seg_cache(env, R_CS, (env->smbase >> 4) & 0xffff, env->smbase, |
1471 |
0xffffffff, 0); |
1472 |
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffffffff, 0); |
1473 |
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffffffff, 0); |
1474 |
cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffffffff, 0); |
1475 |
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffffffff, 0); |
1476 |
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffffffff, 0); |
1477 |
|
1478 |
cpu_x86_update_cr0(env, |
1479 |
env->cr[0] & ~(CR0_PE_MASK | CR0_EM_MASK | CR0_TS_MASK | CR0_PG_MASK));
|
1480 |
cpu_x86_update_cr4(env, 0);
|
1481 |
env->dr[7] = 0x00000400; |
1482 |
CC_OP = CC_OP_EFLAGS; |
1483 |
} |
1484 |
|
1485 |
void helper_rsm(void) |
1486 |
{ |
1487 |
target_ulong sm_state; |
1488 |
int i, offset;
|
1489 |
uint32_t val; |
1490 |
|
1491 |
sm_state = env->smbase + 0x8000;
|
1492 |
#ifdef TARGET_X86_64
|
1493 |
env->efer = ldq_phys(sm_state + 0x7ed0);
|
1494 |
if (env->efer & MSR_EFER_LMA)
|
1495 |
env->hflags |= HF_LMA_MASK; |
1496 |
else
|
1497 |
env->hflags &= ~HF_LMA_MASK; |
1498 |
|
1499 |
for(i = 0; i < 6; i++) { |
1500 |
offset = 0x7e00 + i * 16; |
1501 |
cpu_x86_load_seg_cache(env, i, |
1502 |
lduw_phys(sm_state + offset), |
1503 |
ldq_phys(sm_state + offset + 8),
|
1504 |
ldl_phys(sm_state + offset + 4),
|
1505 |
(lduw_phys(sm_state + offset + 2) & 0xf0ff) << 8); |
1506 |
} |
1507 |
|
1508 |
env->gdt.base = ldq_phys(sm_state + 0x7e68);
|
1509 |
env->gdt.limit = ldl_phys(sm_state + 0x7e64);
|
1510 |
|
1511 |
env->ldt.selector = lduw_phys(sm_state + 0x7e70);
|
1512 |
env->ldt.base = ldq_phys(sm_state + 0x7e78);
|
1513 |
env->ldt.limit = ldl_phys(sm_state + 0x7e74);
|
1514 |
env->ldt.flags = (lduw_phys(sm_state + 0x7e72) & 0xf0ff) << 8; |
1515 |
|
1516 |
env->idt.base = ldq_phys(sm_state + 0x7e88);
|
1517 |
env->idt.limit = ldl_phys(sm_state + 0x7e84);
|
1518 |
|
1519 |
env->tr.selector = lduw_phys(sm_state + 0x7e90);
|
1520 |
env->tr.base = ldq_phys(sm_state + 0x7e98);
|
1521 |
env->tr.limit = ldl_phys(sm_state + 0x7e94);
|
1522 |
env->tr.flags = (lduw_phys(sm_state + 0x7e92) & 0xf0ff) << 8; |
1523 |
|
1524 |
EAX = ldq_phys(sm_state + 0x7ff8);
|
1525 |
ECX = ldq_phys(sm_state + 0x7ff0);
|
1526 |
EDX = ldq_phys(sm_state + 0x7fe8);
|
1527 |
EBX = ldq_phys(sm_state + 0x7fe0);
|
1528 |
ESP = ldq_phys(sm_state + 0x7fd8);
|
1529 |
EBP = ldq_phys(sm_state + 0x7fd0);
|
1530 |
ESI = ldq_phys(sm_state + 0x7fc8);
|
1531 |
EDI = ldq_phys(sm_state + 0x7fc0);
|
1532 |
for(i = 8; i < 16; i++) |
1533 |
env->regs[i] = ldq_phys(sm_state + 0x7ff8 - i * 8); |
1534 |
env->eip = ldq_phys(sm_state + 0x7f78);
|
1535 |
load_eflags(ldl_phys(sm_state + 0x7f70),
|
1536 |
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)); |
1537 |
env->dr[6] = ldl_phys(sm_state + 0x7f68); |
1538 |
env->dr[7] = ldl_phys(sm_state + 0x7f60); |
1539 |
|
1540 |
cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f48));
|
1541 |
cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7f50));
|
1542 |
cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7f58));
|
1543 |
|
1544 |
val = ldl_phys(sm_state + 0x7efc); /* revision ID */ |
1545 |
if (val & 0x20000) { |
1546 |
env->smbase = ldl_phys(sm_state + 0x7f00) & ~0x7fff; |
1547 |
} |
1548 |
#else
|
1549 |
cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7ffc));
|
1550 |
cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7ff8));
|
1551 |
load_eflags(ldl_phys(sm_state + 0x7ff4),
|
1552 |
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)); |
1553 |
env->eip = ldl_phys(sm_state + 0x7ff0);
|
1554 |
EDI = ldl_phys(sm_state + 0x7fec);
|
1555 |
ESI = ldl_phys(sm_state + 0x7fe8);
|
1556 |
EBP = ldl_phys(sm_state + 0x7fe4);
|
1557 |
ESP = ldl_phys(sm_state + 0x7fe0);
|
1558 |
EBX = ldl_phys(sm_state + 0x7fdc);
|
1559 |
EDX = ldl_phys(sm_state + 0x7fd8);
|
1560 |
ECX = ldl_phys(sm_state + 0x7fd4);
|
1561 |
EAX = ldl_phys(sm_state + 0x7fd0);
|
1562 |
env->dr[6] = ldl_phys(sm_state + 0x7fcc); |
1563 |
env->dr[7] = ldl_phys(sm_state + 0x7fc8); |
1564 |
|
1565 |
env->tr.selector = ldl_phys(sm_state + 0x7fc4) & 0xffff; |
1566 |
env->tr.base = ldl_phys(sm_state + 0x7f64);
|
1567 |
env->tr.limit = ldl_phys(sm_state + 0x7f60);
|
1568 |
env->tr.flags = (ldl_phys(sm_state + 0x7f5c) & 0xf0ff) << 8; |
1569 |
|
1570 |
env->ldt.selector = ldl_phys(sm_state + 0x7fc0) & 0xffff; |
1571 |
env->ldt.base = ldl_phys(sm_state + 0x7f80);
|
1572 |
env->ldt.limit = ldl_phys(sm_state + 0x7f7c);
|
1573 |
env->ldt.flags = (ldl_phys(sm_state + 0x7f78) & 0xf0ff) << 8; |
1574 |
|
1575 |
env->gdt.base = ldl_phys(sm_state + 0x7f74);
|
1576 |
env->gdt.limit = ldl_phys(sm_state + 0x7f70);
|
1577 |
|
1578 |
env->idt.base = ldl_phys(sm_state + 0x7f58);
|
1579 |
env->idt.limit = ldl_phys(sm_state + 0x7f54);
|
1580 |
|
1581 |
for(i = 0; i < 6; i++) { |
1582 |
if (i < 3) |
1583 |
offset = 0x7f84 + i * 12; |
1584 |
else
|
1585 |
offset = 0x7f2c + (i - 3) * 12; |
1586 |
cpu_x86_load_seg_cache(env, i, |
1587 |
ldl_phys(sm_state + 0x7fa8 + i * 4) & 0xffff, |
1588 |
ldl_phys(sm_state + offset + 8),
|
1589 |
ldl_phys(sm_state + offset + 4),
|
1590 |
(ldl_phys(sm_state + offset) & 0xf0ff) << 8); |
1591 |
} |
1592 |
cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f14));
|
1593 |
|
1594 |
val = ldl_phys(sm_state + 0x7efc); /* revision ID */ |
1595 |
if (val & 0x20000) { |
1596 |
env->smbase = ldl_phys(sm_state + 0x7ef8) & ~0x7fff; |
1597 |
} |
1598 |
#endif
|
1599 |
CC_OP = CC_OP_EFLAGS; |
1600 |
env->hflags &= ~HF_SMM_MASK; |
1601 |
cpu_smm_update(env); |
1602 |
|
1603 |
if (loglevel & CPU_LOG_INT) {
|
1604 |
fprintf(logfile, "SMM: after RSM\n");
|
1605 |
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP); |
1606 |
} |
1607 |
} |
1608 |
|
1609 |
#endif /* !CONFIG_USER_ONLY */ |
1610 |
|
1611 |
|
1612 |
/* division, flags are undefined */
|
1613 |
|
1614 |
void helper_divb_AL(target_ulong t0)
|
1615 |
{ |
1616 |
unsigned int num, den, q, r; |
1617 |
|
1618 |
num = (EAX & 0xffff);
|
1619 |
den = (t0 & 0xff);
|
1620 |
if (den == 0) { |
1621 |
raise_exception(EXCP00_DIVZ); |
1622 |
} |
1623 |
q = (num / den); |
1624 |
if (q > 0xff) |
1625 |
raise_exception(EXCP00_DIVZ); |
1626 |
q &= 0xff;
|
1627 |
r = (num % den) & 0xff;
|
1628 |
EAX = (EAX & ~0xffff) | (r << 8) | q; |
1629 |
} |
1630 |
|
1631 |
void helper_idivb_AL(target_ulong t0)
|
1632 |
{ |
1633 |
int num, den, q, r;
|
1634 |
|
1635 |
num = (int16_t)EAX; |
1636 |
den = (int8_t)t0; |
1637 |
if (den == 0) { |
1638 |
raise_exception(EXCP00_DIVZ); |
1639 |
} |
1640 |
q = (num / den); |
1641 |
if (q != (int8_t)q)
|
1642 |
raise_exception(EXCP00_DIVZ); |
1643 |
q &= 0xff;
|
1644 |
r = (num % den) & 0xff;
|
1645 |
EAX = (EAX & ~0xffff) | (r << 8) | q; |
1646 |
} |
1647 |
|
1648 |
void helper_divw_AX(target_ulong t0)
|
1649 |
{ |
1650 |
unsigned int num, den, q, r; |
1651 |
|
1652 |
num = (EAX & 0xffff) | ((EDX & 0xffff) << 16); |
1653 |
den = (t0 & 0xffff);
|
1654 |
if (den == 0) { |
1655 |
raise_exception(EXCP00_DIVZ); |
1656 |
} |
1657 |
q = (num / den); |
1658 |
if (q > 0xffff) |
1659 |
raise_exception(EXCP00_DIVZ); |
1660 |
q &= 0xffff;
|
1661 |
r = (num % den) & 0xffff;
|
1662 |
EAX = (EAX & ~0xffff) | q;
|
1663 |
EDX = (EDX & ~0xffff) | r;
|
1664 |
} |
1665 |
|
1666 |
void helper_idivw_AX(target_ulong t0)
|
1667 |
{ |
1668 |
int num, den, q, r;
|
1669 |
|
1670 |
num = (EAX & 0xffff) | ((EDX & 0xffff) << 16); |
1671 |
den = (int16_t)t0; |
1672 |
if (den == 0) { |
1673 |
raise_exception(EXCP00_DIVZ); |
1674 |
} |
1675 |
q = (num / den); |
1676 |
if (q != (int16_t)q)
|
1677 |
raise_exception(EXCP00_DIVZ); |
1678 |
q &= 0xffff;
|
1679 |
r = (num % den) & 0xffff;
|
1680 |
EAX = (EAX & ~0xffff) | q;
|
1681 |
EDX = (EDX & ~0xffff) | r;
|
1682 |
} |
1683 |
|
1684 |
void helper_divl_EAX(target_ulong t0)
|
1685 |
{ |
1686 |
unsigned int den, r; |
1687 |
uint64_t num, q; |
1688 |
|
1689 |
num = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
1690 |
den = t0; |
1691 |
if (den == 0) { |
1692 |
raise_exception(EXCP00_DIVZ); |
1693 |
} |
1694 |
q = (num / den); |
1695 |
r = (num % den); |
1696 |
if (q > 0xffffffff) |
1697 |
raise_exception(EXCP00_DIVZ); |
1698 |
EAX = (uint32_t)q; |
1699 |
EDX = (uint32_t)r; |
1700 |
} |
1701 |
|
1702 |
void helper_idivl_EAX(target_ulong t0)
|
1703 |
{ |
1704 |
int den, r;
|
1705 |
int64_t num, q; |
1706 |
|
1707 |
num = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
1708 |
den = t0; |
1709 |
if (den == 0) { |
1710 |
raise_exception(EXCP00_DIVZ); |
1711 |
} |
1712 |
q = (num / den); |
1713 |
r = (num % den); |
1714 |
if (q != (int32_t)q)
|
1715 |
raise_exception(EXCP00_DIVZ); |
1716 |
EAX = (uint32_t)q; |
1717 |
EDX = (uint32_t)r; |
1718 |
} |
1719 |
|
1720 |
/* bcd */
|
1721 |
|
1722 |
/* XXX: exception */
|
1723 |
void helper_aam(int base) |
1724 |
{ |
1725 |
int al, ah;
|
1726 |
al = EAX & 0xff;
|
1727 |
ah = al / base; |
1728 |
al = al % base; |
1729 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
1730 |
CC_DST = al; |
1731 |
} |
1732 |
|
1733 |
void helper_aad(int base) |
1734 |
{ |
1735 |
int al, ah;
|
1736 |
al = EAX & 0xff;
|
1737 |
ah = (EAX >> 8) & 0xff; |
1738 |
al = ((ah * base) + al) & 0xff;
|
1739 |
EAX = (EAX & ~0xffff) | al;
|
1740 |
CC_DST = al; |
1741 |
} |
1742 |
|
1743 |
void helper_aaa(void) |
1744 |
{ |
1745 |
int icarry;
|
1746 |
int al, ah, af;
|
1747 |
int eflags;
|
1748 |
|
1749 |
eflags = cc_table[CC_OP].compute_all(); |
1750 |
af = eflags & CC_A; |
1751 |
al = EAX & 0xff;
|
1752 |
ah = (EAX >> 8) & 0xff; |
1753 |
|
1754 |
icarry = (al > 0xf9);
|
1755 |
if (((al & 0x0f) > 9 ) || af) { |
1756 |
al = (al + 6) & 0x0f; |
1757 |
ah = (ah + 1 + icarry) & 0xff; |
1758 |
eflags |= CC_C | CC_A; |
1759 |
} else {
|
1760 |
eflags &= ~(CC_C | CC_A); |
1761 |
al &= 0x0f;
|
1762 |
} |
1763 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
1764 |
CC_SRC = eflags; |
1765 |
FORCE_RET(); |
1766 |
} |
1767 |
|
1768 |
void helper_aas(void) |
1769 |
{ |
1770 |
int icarry;
|
1771 |
int al, ah, af;
|
1772 |
int eflags;
|
1773 |
|
1774 |
eflags = cc_table[CC_OP].compute_all(); |
1775 |
af = eflags & CC_A; |
1776 |
al = EAX & 0xff;
|
1777 |
ah = (EAX >> 8) & 0xff; |
1778 |
|
1779 |
icarry = (al < 6);
|
1780 |
if (((al & 0x0f) > 9 ) || af) { |
1781 |
al = (al - 6) & 0x0f; |
1782 |
ah = (ah - 1 - icarry) & 0xff; |
1783 |
eflags |= CC_C | CC_A; |
1784 |
} else {
|
1785 |
eflags &= ~(CC_C | CC_A); |
1786 |
al &= 0x0f;
|
1787 |
} |
1788 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
1789 |
CC_SRC = eflags; |
1790 |
FORCE_RET(); |
1791 |
} |
1792 |
|
1793 |
void helper_daa(void) |
1794 |
{ |
1795 |
int al, af, cf;
|
1796 |
int eflags;
|
1797 |
|
1798 |
eflags = cc_table[CC_OP].compute_all(); |
1799 |
cf = eflags & CC_C; |
1800 |
af = eflags & CC_A; |
1801 |
al = EAX & 0xff;
|
1802 |
|
1803 |
eflags = 0;
|
1804 |
if (((al & 0x0f) > 9 ) || af) { |
1805 |
al = (al + 6) & 0xff; |
1806 |
eflags |= CC_A; |
1807 |
} |
1808 |
if ((al > 0x9f) || cf) { |
1809 |
al = (al + 0x60) & 0xff; |
1810 |
eflags |= CC_C; |
1811 |
} |
1812 |
EAX = (EAX & ~0xff) | al;
|
1813 |
/* well, speed is not an issue here, so we compute the flags by hand */
|
1814 |
eflags |= (al == 0) << 6; /* zf */ |
1815 |
eflags |= parity_table[al]; /* pf */
|
1816 |
eflags |= (al & 0x80); /* sf */ |
1817 |
CC_SRC = eflags; |
1818 |
FORCE_RET(); |
1819 |
} |
1820 |
|
1821 |
void helper_das(void) |
1822 |
{ |
1823 |
int al, al1, af, cf;
|
1824 |
int eflags;
|
1825 |
|
1826 |
eflags = cc_table[CC_OP].compute_all(); |
1827 |
cf = eflags & CC_C; |
1828 |
af = eflags & CC_A; |
1829 |
al = EAX & 0xff;
|
1830 |
|
1831 |
eflags = 0;
|
1832 |
al1 = al; |
1833 |
if (((al & 0x0f) > 9 ) || af) { |
1834 |
eflags |= CC_A; |
1835 |
if (al < 6 || cf) |
1836 |
eflags |= CC_C; |
1837 |
al = (al - 6) & 0xff; |
1838 |
} |
1839 |
if ((al1 > 0x99) || cf) { |
1840 |
al = (al - 0x60) & 0xff; |
1841 |
eflags |= CC_C; |
1842 |
} |
1843 |
EAX = (EAX & ~0xff) | al;
|
1844 |
/* well, speed is not an issue here, so we compute the flags by hand */
|
1845 |
eflags |= (al == 0) << 6; /* zf */ |
1846 |
eflags |= parity_table[al]; /* pf */
|
1847 |
eflags |= (al & 0x80); /* sf */ |
1848 |
CC_SRC = eflags; |
1849 |
FORCE_RET(); |
1850 |
} |
1851 |
|
1852 |
void helper_cmpxchg8b(target_ulong a0)
|
1853 |
{ |
1854 |
uint64_t d; |
1855 |
int eflags;
|
1856 |
|
1857 |
eflags = cc_table[CC_OP].compute_all(); |
1858 |
d = ldq(a0); |
1859 |
if (d == (((uint64_t)EDX << 32) | EAX)) { |
1860 |
stq(a0, ((uint64_t)ECX << 32) | EBX);
|
1861 |
eflags |= CC_Z; |
1862 |
} else {
|
1863 |
EDX = (uint32_t)(d >> 32);
|
1864 |
EAX = (uint32_t)d; |
1865 |
eflags &= ~CC_Z; |
1866 |
} |
1867 |
CC_SRC = eflags; |
1868 |
} |
1869 |
|
1870 |
void helper_single_step(void) |
1871 |
{ |
1872 |
env->dr[6] |= 0x4000; |
1873 |
raise_exception(EXCP01_SSTP); |
1874 |
} |
1875 |
|
1876 |
void helper_cpuid(void) |
1877 |
{ |
1878 |
uint32_t index; |
1879 |
index = (uint32_t)EAX; |
1880 |
|
1881 |
/* test if maximum index reached */
|
1882 |
if (index & 0x80000000) { |
1883 |
if (index > env->cpuid_xlevel)
|
1884 |
index = env->cpuid_level; |
1885 |
} else {
|
1886 |
if (index > env->cpuid_level)
|
1887 |
index = env->cpuid_level; |
1888 |
} |
1889 |
|
1890 |
switch(index) {
|
1891 |
case 0: |
1892 |
EAX = env->cpuid_level; |
1893 |
EBX = env->cpuid_vendor1; |
1894 |
EDX = env->cpuid_vendor2; |
1895 |
ECX = env->cpuid_vendor3; |
1896 |
break;
|
1897 |
case 1: |
1898 |
EAX = env->cpuid_version; |
1899 |
EBX = (env->cpuid_apic_id << 24) | 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */ |
1900 |
ECX = env->cpuid_ext_features; |
1901 |
EDX = env->cpuid_features; |
1902 |
break;
|
1903 |
case 2: |
1904 |
/* cache info: needed for Pentium Pro compatibility */
|
1905 |
EAX = 1;
|
1906 |
EBX = 0;
|
1907 |
ECX = 0;
|
1908 |
EDX = 0x2c307d;
|
1909 |
break;
|
1910 |
case 0x80000000: |
1911 |
EAX = env->cpuid_xlevel; |
1912 |
EBX = env->cpuid_vendor1; |
1913 |
EDX = env->cpuid_vendor2; |
1914 |
ECX = env->cpuid_vendor3; |
1915 |
break;
|
1916 |
case 0x80000001: |
1917 |
EAX = env->cpuid_features; |
1918 |
EBX = 0;
|
1919 |
ECX = env->cpuid_ext3_features; |
1920 |
EDX = env->cpuid_ext2_features; |
1921 |
break;
|
1922 |
case 0x80000002: |
1923 |
case 0x80000003: |
1924 |
case 0x80000004: |
1925 |
EAX = env->cpuid_model[(index - 0x80000002) * 4 + 0]; |
1926 |
EBX = env->cpuid_model[(index - 0x80000002) * 4 + 1]; |
1927 |
ECX = env->cpuid_model[(index - 0x80000002) * 4 + 2]; |
1928 |
EDX = env->cpuid_model[(index - 0x80000002) * 4 + 3]; |
1929 |
break;
|
1930 |
case 0x80000005: |
1931 |
/* cache info (L1 cache) */
|
1932 |
EAX = 0x01ff01ff;
|
1933 |
EBX = 0x01ff01ff;
|
1934 |
ECX = 0x40020140;
|
1935 |
EDX = 0x40020140;
|
1936 |
break;
|
1937 |
case 0x80000006: |
1938 |
/* cache info (L2 cache) */
|
1939 |
EAX = 0;
|
1940 |
EBX = 0x42004200;
|
1941 |
ECX = 0x02008140;
|
1942 |
EDX = 0;
|
1943 |
break;
|
1944 |
case 0x80000008: |
1945 |
/* virtual & phys address size in low 2 bytes. */
|
1946 |
/* XXX: This value must match the one used in the MMU code. */
|
1947 |
#if defined(TARGET_X86_64)
|
1948 |
# if defined(USE_KQEMU)
|
1949 |
EAX = 0x00003020; /* 48 bits virtual, 32 bits physical */ |
1950 |
# else
|
1951 |
/* XXX: The physical address space is limited to 42 bits in exec.c. */
|
1952 |
EAX = 0x00003028; /* 48 bits virtual, 40 bits physical */ |
1953 |
# endif
|
1954 |
#else
|
1955 |
# if defined(USE_KQEMU)
|
1956 |
EAX = 0x00000020; /* 32 bits physical */ |
1957 |
# else
|
1958 |
EAX = 0x00000024; /* 36 bits physical */ |
1959 |
# endif
|
1960 |
#endif
|
1961 |
EBX = 0;
|
1962 |
ECX = 0;
|
1963 |
EDX = 0;
|
1964 |
break;
|
1965 |
case 0x8000000A: |
1966 |
EAX = 0x00000001;
|
1967 |
EBX = 0;
|
1968 |
ECX = 0;
|
1969 |
EDX = 0;
|
1970 |
break;
|
1971 |
default:
|
1972 |
/* reserved values: zero */
|
1973 |
EAX = 0;
|
1974 |
EBX = 0;
|
1975 |
ECX = 0;
|
1976 |
EDX = 0;
|
1977 |
break;
|
1978 |
} |
1979 |
} |
1980 |
|
1981 |
void helper_enter_level(int level, int data32, target_ulong t1) |
1982 |
{ |
1983 |
target_ulong ssp; |
1984 |
uint32_t esp_mask, esp, ebp; |
1985 |
|
1986 |
esp_mask = get_sp_mask(env->segs[R_SS].flags); |
1987 |
ssp = env->segs[R_SS].base; |
1988 |
ebp = EBP; |
1989 |
esp = ESP; |
1990 |
if (data32) {
|
1991 |
/* 32 bit */
|
1992 |
esp -= 4;
|
1993 |
while (--level) {
|
1994 |
esp -= 4;
|
1995 |
ebp -= 4;
|
1996 |
stl(ssp + (esp & esp_mask), ldl(ssp + (ebp & esp_mask))); |
1997 |
} |
1998 |
esp -= 4;
|
1999 |
stl(ssp + (esp & esp_mask), t1); |
2000 |
} else {
|
2001 |
/* 16 bit */
|
2002 |
esp -= 2;
|
2003 |
while (--level) {
|
2004 |
esp -= 2;
|
2005 |
ebp -= 2;
|
2006 |
stw(ssp + (esp & esp_mask), lduw(ssp + (ebp & esp_mask))); |
2007 |
} |
2008 |
esp -= 2;
|
2009 |
stw(ssp + (esp & esp_mask), t1); |
2010 |
} |
2011 |
} |
2012 |
|
2013 |
#ifdef TARGET_X86_64
|
2014 |
void helper_enter64_level(int level, int data64, target_ulong t1) |
2015 |
{ |
2016 |
target_ulong esp, ebp; |
2017 |
ebp = EBP; |
2018 |
esp = ESP; |
2019 |
|
2020 |
if (data64) {
|
2021 |
/* 64 bit */
|
2022 |
esp -= 8;
|
2023 |
while (--level) {
|
2024 |
esp -= 8;
|
2025 |
ebp -= 8;
|
2026 |
stq(esp, ldq(ebp)); |
2027 |
} |
2028 |
esp -= 8;
|
2029 |
stq(esp, t1); |
2030 |
} else {
|
2031 |
/* 16 bit */
|
2032 |
esp -= 2;
|
2033 |
while (--level) {
|
2034 |
esp -= 2;
|
2035 |
ebp -= 2;
|
2036 |
stw(esp, lduw(ebp)); |
2037 |
} |
2038 |
esp -= 2;
|
2039 |
stw(esp, t1); |
2040 |
} |
2041 |
} |
2042 |
#endif
|
2043 |
|
2044 |
void helper_lldt(int selector) |
2045 |
{ |
2046 |
SegmentCache *dt; |
2047 |
uint32_t e1, e2; |
2048 |
int index, entry_limit;
|
2049 |
target_ulong ptr; |
2050 |
|
2051 |
selector &= 0xffff;
|
2052 |
if ((selector & 0xfffc) == 0) { |
2053 |
/* XXX: NULL selector case: invalid LDT */
|
2054 |
env->ldt.base = 0;
|
2055 |
env->ldt.limit = 0;
|
2056 |
} else {
|
2057 |
if (selector & 0x4) |
2058 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2059 |
dt = &env->gdt; |
2060 |
index = selector & ~7;
|
2061 |
#ifdef TARGET_X86_64
|
2062 |
if (env->hflags & HF_LMA_MASK)
|
2063 |
entry_limit = 15;
|
2064 |
else
|
2065 |
#endif
|
2066 |
entry_limit = 7;
|
2067 |
if ((index + entry_limit) > dt->limit)
|
2068 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2069 |
ptr = dt->base + index; |
2070 |
e1 = ldl_kernel(ptr); |
2071 |
e2 = ldl_kernel(ptr + 4);
|
2072 |
if ((e2 & DESC_S_MASK) || ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2) |
2073 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2074 |
if (!(e2 & DESC_P_MASK))
|
2075 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
2076 |
#ifdef TARGET_X86_64
|
2077 |
if (env->hflags & HF_LMA_MASK) {
|
2078 |
uint32_t e3; |
2079 |
e3 = ldl_kernel(ptr + 8);
|
2080 |
load_seg_cache_raw_dt(&env->ldt, e1, e2); |
2081 |
env->ldt.base |= (target_ulong)e3 << 32;
|
2082 |
} else
|
2083 |
#endif
|
2084 |
{ |
2085 |
load_seg_cache_raw_dt(&env->ldt, e1, e2); |
2086 |
} |
2087 |
} |
2088 |
env->ldt.selector = selector; |
2089 |
} |
2090 |
|
2091 |
void helper_ltr(int selector) |
2092 |
{ |
2093 |
SegmentCache *dt; |
2094 |
uint32_t e1, e2; |
2095 |
int index, type, entry_limit;
|
2096 |
target_ulong ptr; |
2097 |
|
2098 |
selector &= 0xffff;
|
2099 |
if ((selector & 0xfffc) == 0) { |
2100 |
/* NULL selector case: invalid TR */
|
2101 |
env->tr.base = 0;
|
2102 |
env->tr.limit = 0;
|
2103 |
env->tr.flags = 0;
|
2104 |
} else {
|
2105 |
if (selector & 0x4) |
2106 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2107 |
dt = &env->gdt; |
2108 |
index = selector & ~7;
|
2109 |
#ifdef TARGET_X86_64
|
2110 |
if (env->hflags & HF_LMA_MASK)
|
2111 |
entry_limit = 15;
|
2112 |
else
|
2113 |
#endif
|
2114 |
entry_limit = 7;
|
2115 |
if ((index + entry_limit) > dt->limit)
|
2116 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2117 |
ptr = dt->base + index; |
2118 |
e1 = ldl_kernel(ptr); |
2119 |
e2 = ldl_kernel(ptr + 4);
|
2120 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
2121 |
if ((e2 & DESC_S_MASK) ||
|
2122 |
(type != 1 && type != 9)) |
2123 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2124 |
if (!(e2 & DESC_P_MASK))
|
2125 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
2126 |
#ifdef TARGET_X86_64
|
2127 |
if (env->hflags & HF_LMA_MASK) {
|
2128 |
uint32_t e3, e4; |
2129 |
e3 = ldl_kernel(ptr + 8);
|
2130 |
e4 = ldl_kernel(ptr + 12);
|
2131 |
if ((e4 >> DESC_TYPE_SHIFT) & 0xf) |
2132 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2133 |
load_seg_cache_raw_dt(&env->tr, e1, e2); |
2134 |
env->tr.base |= (target_ulong)e3 << 32;
|
2135 |
} else
|
2136 |
#endif
|
2137 |
{ |
2138 |
load_seg_cache_raw_dt(&env->tr, e1, e2); |
2139 |
} |
2140 |
e2 |= DESC_TSS_BUSY_MASK; |
2141 |
stl_kernel(ptr + 4, e2);
|
2142 |
} |
2143 |
env->tr.selector = selector; |
2144 |
} |
2145 |
|
2146 |
/* only works if protected mode and not VM86. seg_reg must be != R_CS */
|
2147 |
void helper_load_seg(int seg_reg, int selector) |
2148 |
{ |
2149 |
uint32_t e1, e2; |
2150 |
int cpl, dpl, rpl;
|
2151 |
SegmentCache *dt; |
2152 |
int index;
|
2153 |
target_ulong ptr; |
2154 |
|
2155 |
selector &= 0xffff;
|
2156 |
cpl = env->hflags & HF_CPL_MASK; |
2157 |
if ((selector & 0xfffc) == 0) { |
2158 |
/* null selector case */
|
2159 |
if (seg_reg == R_SS
|
2160 |
#ifdef TARGET_X86_64
|
2161 |
&& (!(env->hflags & HF_CS64_MASK) || cpl == 3)
|
2162 |
#endif
|
2163 |
) |
2164 |
raise_exception_err(EXCP0D_GPF, 0);
|
2165 |
cpu_x86_load_seg_cache(env, seg_reg, selector, 0, 0, 0); |
2166 |
} else {
|
2167 |
|
2168 |
if (selector & 0x4) |
2169 |
dt = &env->ldt; |
2170 |
else
|
2171 |
dt = &env->gdt; |
2172 |
index = selector & ~7;
|
2173 |
if ((index + 7) > dt->limit) |
2174 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2175 |
ptr = dt->base + index; |
2176 |
e1 = ldl_kernel(ptr); |
2177 |
e2 = ldl_kernel(ptr + 4);
|
2178 |
|
2179 |
if (!(e2 & DESC_S_MASK))
|
2180 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2181 |
rpl = selector & 3;
|
2182 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2183 |
if (seg_reg == R_SS) {
|
2184 |
/* must be writable segment */
|
2185 |
if ((e2 & DESC_CS_MASK) || !(e2 & DESC_W_MASK))
|
2186 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2187 |
if (rpl != cpl || dpl != cpl)
|
2188 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2189 |
} else {
|
2190 |
/* must be readable segment */
|
2191 |
if ((e2 & (DESC_CS_MASK | DESC_R_MASK)) == DESC_CS_MASK)
|
2192 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2193 |
|
2194 |
if (!(e2 & DESC_CS_MASK) || !(e2 & DESC_C_MASK)) {
|
2195 |
/* if not conforming code, test rights */
|
2196 |
if (dpl < cpl || dpl < rpl)
|
2197 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2198 |
} |
2199 |
} |
2200 |
|
2201 |
if (!(e2 & DESC_P_MASK)) {
|
2202 |
if (seg_reg == R_SS)
|
2203 |
raise_exception_err(EXCP0C_STACK, selector & 0xfffc);
|
2204 |
else
|
2205 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
2206 |
} |
2207 |
|
2208 |
/* set the access bit if not already set */
|
2209 |
if (!(e2 & DESC_A_MASK)) {
|
2210 |
e2 |= DESC_A_MASK; |
2211 |
stl_kernel(ptr + 4, e2);
|
2212 |
} |
2213 |
|
2214 |
cpu_x86_load_seg_cache(env, seg_reg, selector, |
2215 |
get_seg_base(e1, e2), |
2216 |
get_seg_limit(e1, e2), |
2217 |
e2); |
2218 |
#if 0
|
2219 |
fprintf(logfile, "load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx flags=%08x\n",
|
2220 |
selector, (unsigned long)sc->base, sc->limit, sc->flags);
|
2221 |
#endif
|
2222 |
} |
2223 |
} |
2224 |
|
2225 |
/* protected mode jump */
|
2226 |
void helper_ljmp_protected(int new_cs, target_ulong new_eip, |
2227 |
int next_eip_addend)
|
2228 |
{ |
2229 |
int gate_cs, type;
|
2230 |
uint32_t e1, e2, cpl, dpl, rpl, limit; |
2231 |
target_ulong next_eip; |
2232 |
|
2233 |
if ((new_cs & 0xfffc) == 0) |
2234 |
raise_exception_err(EXCP0D_GPF, 0);
|
2235 |
if (load_segment(&e1, &e2, new_cs) != 0) |
2236 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2237 |
cpl = env->hflags & HF_CPL_MASK; |
2238 |
if (e2 & DESC_S_MASK) {
|
2239 |
if (!(e2 & DESC_CS_MASK))
|
2240 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2241 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2242 |
if (e2 & DESC_C_MASK) {
|
2243 |
/* conforming code segment */
|
2244 |
if (dpl > cpl)
|
2245 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2246 |
} else {
|
2247 |
/* non conforming code segment */
|
2248 |
rpl = new_cs & 3;
|
2249 |
if (rpl > cpl)
|
2250 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2251 |
if (dpl != cpl)
|
2252 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2253 |
} |
2254 |
if (!(e2 & DESC_P_MASK))
|
2255 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
2256 |
limit = get_seg_limit(e1, e2); |
2257 |
if (new_eip > limit &&
|
2258 |
!(env->hflags & HF_LMA_MASK) && !(e2 & DESC_L_MASK)) |
2259 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2260 |
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
2261 |
get_seg_base(e1, e2), limit, e2); |
2262 |
EIP = new_eip; |
2263 |
} else {
|
2264 |
/* jump to call or task gate */
|
2265 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2266 |
rpl = new_cs & 3;
|
2267 |
cpl = env->hflags & HF_CPL_MASK; |
2268 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
2269 |
switch(type) {
|
2270 |
case 1: /* 286 TSS */ |
2271 |
case 9: /* 386 TSS */ |
2272 |
case 5: /* task gate */ |
2273 |
if (dpl < cpl || dpl < rpl)
|
2274 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2275 |
next_eip = env->eip + next_eip_addend; |
2276 |
switch_tss(new_cs, e1, e2, SWITCH_TSS_JMP, next_eip); |
2277 |
CC_OP = CC_OP_EFLAGS; |
2278 |
break;
|
2279 |
case 4: /* 286 call gate */ |
2280 |
case 12: /* 386 call gate */ |
2281 |
if ((dpl < cpl) || (dpl < rpl))
|
2282 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2283 |
if (!(e2 & DESC_P_MASK))
|
2284 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
2285 |
gate_cs = e1 >> 16;
|
2286 |
new_eip = (e1 & 0xffff);
|
2287 |
if (type == 12) |
2288 |
new_eip |= (e2 & 0xffff0000);
|
2289 |
if (load_segment(&e1, &e2, gate_cs) != 0) |
2290 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
2291 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2292 |
/* must be code segment */
|
2293 |
if (((e2 & (DESC_S_MASK | DESC_CS_MASK)) !=
|
2294 |
(DESC_S_MASK | DESC_CS_MASK))) |
2295 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
2296 |
if (((e2 & DESC_C_MASK) && (dpl > cpl)) ||
|
2297 |
(!(e2 & DESC_C_MASK) && (dpl != cpl))) |
2298 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
2299 |
if (!(e2 & DESC_P_MASK))
|
2300 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
2301 |
limit = get_seg_limit(e1, e2); |
2302 |
if (new_eip > limit)
|
2303 |
raise_exception_err(EXCP0D_GPF, 0);
|
2304 |
cpu_x86_load_seg_cache(env, R_CS, (gate_cs & 0xfffc) | cpl,
|
2305 |
get_seg_base(e1, e2), limit, e2); |
2306 |
EIP = new_eip; |
2307 |
break;
|
2308 |
default:
|
2309 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2310 |
break;
|
2311 |
} |
2312 |
} |
2313 |
} |
2314 |
|
2315 |
/* real mode call */
|
2316 |
void helper_lcall_real(int new_cs, target_ulong new_eip1, |
2317 |
int shift, int next_eip) |
2318 |
{ |
2319 |
int new_eip;
|
2320 |
uint32_t esp, esp_mask; |
2321 |
target_ulong ssp; |
2322 |
|
2323 |
new_eip = new_eip1; |
2324 |
esp = ESP; |
2325 |
esp_mask = get_sp_mask(env->segs[R_SS].flags); |
2326 |
ssp = env->segs[R_SS].base; |
2327 |
if (shift) {
|
2328 |
PUSHL(ssp, esp, esp_mask, env->segs[R_CS].selector); |
2329 |
PUSHL(ssp, esp, esp_mask, next_eip); |
2330 |
} else {
|
2331 |
PUSHW(ssp, esp, esp_mask, env->segs[R_CS].selector); |
2332 |
PUSHW(ssp, esp, esp_mask, next_eip); |
2333 |
} |
2334 |
|
2335 |
SET_ESP(esp, esp_mask); |
2336 |
env->eip = new_eip; |
2337 |
env->segs[R_CS].selector = new_cs; |
2338 |
env->segs[R_CS].base = (new_cs << 4);
|
2339 |
} |
2340 |
|
2341 |
/* protected mode call */
|
2342 |
void helper_lcall_protected(int new_cs, target_ulong new_eip, |
2343 |
int shift, int next_eip_addend) |
2344 |
{ |
2345 |
int new_stack, i;
|
2346 |
uint32_t e1, e2, cpl, dpl, rpl, selector, offset, param_count; |
2347 |
uint32_t ss, ss_e1, ss_e2, sp, type, ss_dpl, sp_mask; |
2348 |
uint32_t val, limit, old_sp_mask; |
2349 |
target_ulong ssp, old_ssp, next_eip; |
2350 |
|
2351 |
next_eip = env->eip + next_eip_addend; |
2352 |
#ifdef DEBUG_PCALL
|
2353 |
if (loglevel & CPU_LOG_PCALL) {
|
2354 |
fprintf(logfile, "lcall %04x:%08x s=%d\n",
|
2355 |
new_cs, (uint32_t)new_eip, shift); |
2356 |
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP); |
2357 |
} |
2358 |
#endif
|
2359 |
if ((new_cs & 0xfffc) == 0) |
2360 |
raise_exception_err(EXCP0D_GPF, 0);
|
2361 |
if (load_segment(&e1, &e2, new_cs) != 0) |
2362 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2363 |
cpl = env->hflags & HF_CPL_MASK; |
2364 |
#ifdef DEBUG_PCALL
|
2365 |
if (loglevel & CPU_LOG_PCALL) {
|
2366 |
fprintf(logfile, "desc=%08x:%08x\n", e1, e2);
|
2367 |
} |
2368 |
#endif
|
2369 |
if (e2 & DESC_S_MASK) {
|
2370 |
if (!(e2 & DESC_CS_MASK))
|
2371 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2372 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2373 |
if (e2 & DESC_C_MASK) {
|
2374 |
/* conforming code segment */
|
2375 |
if (dpl > cpl)
|
2376 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2377 |
} else {
|
2378 |
/* non conforming code segment */
|
2379 |
rpl = new_cs & 3;
|
2380 |
if (rpl > cpl)
|
2381 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2382 |
if (dpl != cpl)
|
2383 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2384 |
} |
2385 |
if (!(e2 & DESC_P_MASK))
|
2386 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
2387 |
|
2388 |
#ifdef TARGET_X86_64
|
2389 |
/* XXX: check 16/32 bit cases in long mode */
|
2390 |
if (shift == 2) { |
2391 |
target_ulong rsp; |
2392 |
/* 64 bit case */
|
2393 |
rsp = ESP; |
2394 |
PUSHQ(rsp, env->segs[R_CS].selector); |
2395 |
PUSHQ(rsp, next_eip); |
2396 |
/* from this point, not restartable */
|
2397 |
ESP = rsp; |
2398 |
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
2399 |
get_seg_base(e1, e2), |
2400 |
get_seg_limit(e1, e2), e2); |
2401 |
EIP = new_eip; |
2402 |
} else
|
2403 |
#endif
|
2404 |
{ |
2405 |
sp = ESP; |
2406 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
2407 |
ssp = env->segs[R_SS].base; |
2408 |
if (shift) {
|
2409 |
PUSHL(ssp, sp, sp_mask, env->segs[R_CS].selector); |
2410 |
PUSHL(ssp, sp, sp_mask, next_eip); |
2411 |
} else {
|
2412 |
PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector); |
2413 |
PUSHW(ssp, sp, sp_mask, next_eip); |
2414 |
} |
2415 |
|
2416 |
limit = get_seg_limit(e1, e2); |
2417 |
if (new_eip > limit)
|
2418 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2419 |
/* from this point, not restartable */
|
2420 |
SET_ESP(sp, sp_mask); |
2421 |
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
2422 |
get_seg_base(e1, e2), limit, e2); |
2423 |
EIP = new_eip; |
2424 |
} |
2425 |
} else {
|
2426 |
/* check gate type */
|
2427 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
2428 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2429 |
rpl = new_cs & 3;
|
2430 |
switch(type) {
|
2431 |
case 1: /* available 286 TSS */ |
2432 |
case 9: /* available 386 TSS */ |
2433 |
case 5: /* task gate */ |
2434 |
if (dpl < cpl || dpl < rpl)
|
2435 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2436 |
switch_tss(new_cs, e1, e2, SWITCH_TSS_CALL, next_eip); |
2437 |
CC_OP = CC_OP_EFLAGS; |
2438 |
return;
|
2439 |
case 4: /* 286 call gate */ |
2440 |
case 12: /* 386 call gate */ |
2441 |
break;
|
2442 |
default:
|
2443 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2444 |
break;
|
2445 |
} |
2446 |
shift = type >> 3;
|
2447 |
|
2448 |
if (dpl < cpl || dpl < rpl)
|
2449 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2450 |
/* check valid bit */
|
2451 |
if (!(e2 & DESC_P_MASK))
|
2452 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
2453 |
selector = e1 >> 16;
|
2454 |
offset = (e2 & 0xffff0000) | (e1 & 0x0000ffff); |
2455 |
param_count = e2 & 0x1f;
|
2456 |
if ((selector & 0xfffc) == 0) |
2457 |
raise_exception_err(EXCP0D_GPF, 0);
|
2458 |
|
2459 |
if (load_segment(&e1, &e2, selector) != 0) |
2460 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2461 |
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
2462 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2463 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2464 |
if (dpl > cpl)
|
2465 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2466 |
if (!(e2 & DESC_P_MASK))
|
2467 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
2468 |
|
2469 |
if (!(e2 & DESC_C_MASK) && dpl < cpl) {
|
2470 |
/* to inner privilege */
|
2471 |
get_ss_esp_from_tss(&ss, &sp, dpl); |
2472 |
#ifdef DEBUG_PCALL
|
2473 |
if (loglevel & CPU_LOG_PCALL)
|
2474 |
fprintf(logfile, "new ss:esp=%04x:%08x param_count=%d ESP=" TARGET_FMT_lx "\n", |
2475 |
ss, sp, param_count, ESP); |
2476 |
#endif
|
2477 |
if ((ss & 0xfffc) == 0) |
2478 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2479 |
if ((ss & 3) != dpl) |
2480 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2481 |
if (load_segment(&ss_e1, &ss_e2, ss) != 0) |
2482 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2483 |
ss_dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
2484 |
if (ss_dpl != dpl)
|
2485 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2486 |
if (!(ss_e2 & DESC_S_MASK) ||
|
2487 |
(ss_e2 & DESC_CS_MASK) || |
2488 |
!(ss_e2 & DESC_W_MASK)) |
2489 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2490 |
if (!(ss_e2 & DESC_P_MASK))
|
2491 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2492 |
|
2493 |
// push_size = ((param_count * 2) + 8) << shift;
|
2494 |
|
2495 |
old_sp_mask = get_sp_mask(env->segs[R_SS].flags); |
2496 |
old_ssp = env->segs[R_SS].base; |
2497 |
|
2498 |
sp_mask = get_sp_mask(ss_e2); |
2499 |
ssp = get_seg_base(ss_e1, ss_e2); |
2500 |
if (shift) {
|
2501 |
PUSHL(ssp, sp, sp_mask, env->segs[R_SS].selector); |
2502 |
PUSHL(ssp, sp, sp_mask, ESP); |
2503 |
for(i = param_count - 1; i >= 0; i--) { |
2504 |
val = ldl_kernel(old_ssp + ((ESP + i * 4) & old_sp_mask));
|
2505 |
PUSHL(ssp, sp, sp_mask, val); |
2506 |
} |
2507 |
} else {
|
2508 |
PUSHW(ssp, sp, sp_mask, env->segs[R_SS].selector); |
2509 |
PUSHW(ssp, sp, sp_mask, ESP); |
2510 |
for(i = param_count - 1; i >= 0; i--) { |
2511 |
val = lduw_kernel(old_ssp + ((ESP + i * 2) & old_sp_mask));
|
2512 |
PUSHW(ssp, sp, sp_mask, val); |
2513 |
} |
2514 |
} |
2515 |
new_stack = 1;
|
2516 |
} else {
|
2517 |
/* to same privilege */
|
2518 |
sp = ESP; |
2519 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
2520 |
ssp = env->segs[R_SS].base; |
2521 |
// push_size = (4 << shift);
|
2522 |
new_stack = 0;
|
2523 |
} |
2524 |
|
2525 |
if (shift) {
|
2526 |
PUSHL(ssp, sp, sp_mask, env->segs[R_CS].selector); |
2527 |
PUSHL(ssp, sp, sp_mask, next_eip); |
2528 |
} else {
|
2529 |
PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector); |
2530 |
PUSHW(ssp, sp, sp_mask, next_eip); |
2531 |
} |
2532 |
|
2533 |
/* from this point, not restartable */
|
2534 |
|
2535 |
if (new_stack) {
|
2536 |
ss = (ss & ~3) | dpl;
|
2537 |
cpu_x86_load_seg_cache(env, R_SS, ss, |
2538 |
ssp, |
2539 |
get_seg_limit(ss_e1, ss_e2), |
2540 |
ss_e2); |
2541 |
} |
2542 |
|
2543 |
selector = (selector & ~3) | dpl;
|
2544 |
cpu_x86_load_seg_cache(env, R_CS, selector, |
2545 |
get_seg_base(e1, e2), |
2546 |
get_seg_limit(e1, e2), |
2547 |
e2); |
2548 |
cpu_x86_set_cpl(env, dpl); |
2549 |
SET_ESP(sp, sp_mask); |
2550 |
EIP = offset; |
2551 |
} |
2552 |
#ifdef USE_KQEMU
|
2553 |
if (kqemu_is_ok(env)) {
|
2554 |
env->exception_index = -1;
|
2555 |
cpu_loop_exit(); |
2556 |
} |
2557 |
#endif
|
2558 |
} |
2559 |
|
2560 |
/* real and vm86 mode iret */
|
2561 |
void helper_iret_real(int shift) |
2562 |
{ |
2563 |
uint32_t sp, new_cs, new_eip, new_eflags, sp_mask; |
2564 |
target_ulong ssp; |
2565 |
int eflags_mask;
|
2566 |
|
2567 |
sp_mask = 0xffff; /* XXXX: use SS segment size ? */ |
2568 |
sp = ESP; |
2569 |
ssp = env->segs[R_SS].base; |
2570 |
if (shift == 1) { |
2571 |
/* 32 bits */
|
2572 |
POPL(ssp, sp, sp_mask, new_eip); |
2573 |
POPL(ssp, sp, sp_mask, new_cs); |
2574 |
new_cs &= 0xffff;
|
2575 |
POPL(ssp, sp, sp_mask, new_eflags); |
2576 |
} else {
|
2577 |
/* 16 bits */
|
2578 |
POPW(ssp, sp, sp_mask, new_eip); |
2579 |
POPW(ssp, sp, sp_mask, new_cs); |
2580 |
POPW(ssp, sp, sp_mask, new_eflags); |
2581 |
} |
2582 |
ESP = (ESP & ~sp_mask) | (sp & sp_mask); |
2583 |
load_seg_vm(R_CS, new_cs); |
2584 |
env->eip = new_eip; |
2585 |
if (env->eflags & VM_MASK)
|
2586 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | RF_MASK | NT_MASK; |
2587 |
else
|
2588 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | IOPL_MASK | RF_MASK | NT_MASK; |
2589 |
if (shift == 0) |
2590 |
eflags_mask &= 0xffff;
|
2591 |
load_eflags(new_eflags, eflags_mask); |
2592 |
env->hflags &= ~HF_NMI_MASK; |
2593 |
} |
2594 |
|
2595 |
static inline void validate_seg(int seg_reg, int cpl) |
2596 |
{ |
2597 |
int dpl;
|
2598 |
uint32_t e2; |
2599 |
|
2600 |
/* XXX: on x86_64, we do not want to nullify FS and GS because
|
2601 |
they may still contain a valid base. I would be interested to
|
2602 |
know how a real x86_64 CPU behaves */
|
2603 |
if ((seg_reg == R_FS || seg_reg == R_GS) &&
|
2604 |
(env->segs[seg_reg].selector & 0xfffc) == 0) |
2605 |
return;
|
2606 |
|
2607 |
e2 = env->segs[seg_reg].flags; |
2608 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2609 |
if (!(e2 & DESC_CS_MASK) || !(e2 & DESC_C_MASK)) {
|
2610 |
/* data or non conforming code segment */
|
2611 |
if (dpl < cpl) {
|
2612 |
cpu_x86_load_seg_cache(env, seg_reg, 0, 0, 0, 0); |
2613 |
} |
2614 |
} |
2615 |
} |
2616 |
|
2617 |
/* protected mode iret */
|
2618 |
static inline void helper_ret_protected(int shift, int is_iret, int addend) |
2619 |
{ |
2620 |
uint32_t new_cs, new_eflags, new_ss; |
2621 |
uint32_t new_es, new_ds, new_fs, new_gs; |
2622 |
uint32_t e1, e2, ss_e1, ss_e2; |
2623 |
int cpl, dpl, rpl, eflags_mask, iopl;
|
2624 |
target_ulong ssp, sp, new_eip, new_esp, sp_mask; |
2625 |
|
2626 |
#ifdef TARGET_X86_64
|
2627 |
if (shift == 2) |
2628 |
sp_mask = -1;
|
2629 |
else
|
2630 |
#endif
|
2631 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
2632 |
sp = ESP; |
2633 |
ssp = env->segs[R_SS].base; |
2634 |
new_eflags = 0; /* avoid warning */ |
2635 |
#ifdef TARGET_X86_64
|
2636 |
if (shift == 2) { |
2637 |
POPQ(sp, new_eip); |
2638 |
POPQ(sp, new_cs); |
2639 |
new_cs &= 0xffff;
|
2640 |
if (is_iret) {
|
2641 |
POPQ(sp, new_eflags); |
2642 |
} |
2643 |
} else
|
2644 |
#endif
|
2645 |
if (shift == 1) { |
2646 |
/* 32 bits */
|
2647 |
POPL(ssp, sp, sp_mask, new_eip); |
2648 |
POPL(ssp, sp, sp_mask, new_cs); |
2649 |
new_cs &= 0xffff;
|
2650 |
if (is_iret) {
|
2651 |
POPL(ssp, sp, sp_mask, new_eflags); |
2652 |
if (new_eflags & VM_MASK)
|
2653 |
goto return_to_vm86;
|
2654 |
} |
2655 |
} else {
|
2656 |
/* 16 bits */
|
2657 |
POPW(ssp, sp, sp_mask, new_eip); |
2658 |
POPW(ssp, sp, sp_mask, new_cs); |
2659 |
if (is_iret)
|
2660 |
POPW(ssp, sp, sp_mask, new_eflags); |
2661 |
} |
2662 |
#ifdef DEBUG_PCALL
|
2663 |
if (loglevel & CPU_LOG_PCALL) {
|
2664 |
fprintf(logfile, "lret new %04x:" TARGET_FMT_lx " s=%d addend=0x%x\n", |
2665 |
new_cs, new_eip, shift, addend); |
2666 |
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP); |
2667 |
} |
2668 |
#endif
|
2669 |
if ((new_cs & 0xfffc) == 0) |
2670 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2671 |
if (load_segment(&e1, &e2, new_cs) != 0) |
2672 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2673 |
if (!(e2 & DESC_S_MASK) ||
|
2674 |
!(e2 & DESC_CS_MASK)) |
2675 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2676 |
cpl = env->hflags & HF_CPL_MASK; |
2677 |
rpl = new_cs & 3;
|
2678 |
if (rpl < cpl)
|
2679 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2680 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2681 |
if (e2 & DESC_C_MASK) {
|
2682 |
if (dpl > rpl)
|
2683 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2684 |
} else {
|
2685 |
if (dpl != rpl)
|
2686 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2687 |
} |
2688 |
if (!(e2 & DESC_P_MASK))
|
2689 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
2690 |
|
2691 |
sp += addend; |
2692 |
if (rpl == cpl && (!(env->hflags & HF_CS64_MASK) ||
|
2693 |
((env->hflags & HF_CS64_MASK) && !is_iret))) { |
2694 |
/* return to same priledge level */
|
2695 |
cpu_x86_load_seg_cache(env, R_CS, new_cs, |
2696 |
get_seg_base(e1, e2), |
2697 |
get_seg_limit(e1, e2), |
2698 |
e2); |
2699 |
} else {
|
2700 |
/* return to different privilege level */
|
2701 |
#ifdef TARGET_X86_64
|
2702 |
if (shift == 2) { |
2703 |
POPQ(sp, new_esp); |
2704 |
POPQ(sp, new_ss); |
2705 |
new_ss &= 0xffff;
|
2706 |
} else
|
2707 |
#endif
|
2708 |
if (shift == 1) { |
2709 |
/* 32 bits */
|
2710 |
POPL(ssp, sp, sp_mask, new_esp); |
2711 |
POPL(ssp, sp, sp_mask, new_ss); |
2712 |
new_ss &= 0xffff;
|
2713 |
} else {
|
2714 |
/* 16 bits */
|
2715 |
POPW(ssp, sp, sp_mask, new_esp); |
2716 |
POPW(ssp, sp, sp_mask, new_ss); |
2717 |
} |
2718 |
#ifdef DEBUG_PCALL
|
2719 |
if (loglevel & CPU_LOG_PCALL) {
|
2720 |
fprintf(logfile, "new ss:esp=%04x:" TARGET_FMT_lx "\n", |
2721 |
new_ss, new_esp); |
2722 |
} |
2723 |
#endif
|
2724 |
if ((new_ss & 0xfffc) == 0) { |
2725 |
#ifdef TARGET_X86_64
|
2726 |
/* NULL ss is allowed in long mode if cpl != 3*/
|
2727 |
/* XXX: test CS64 ? */
|
2728 |
if ((env->hflags & HF_LMA_MASK) && rpl != 3) { |
2729 |
cpu_x86_load_seg_cache(env, R_SS, new_ss, |
2730 |
0, 0xffffffff, |
2731 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2732 |
DESC_S_MASK | (rpl << DESC_DPL_SHIFT) | |
2733 |
DESC_W_MASK | DESC_A_MASK); |
2734 |
ss_e2 = DESC_B_MASK; /* XXX: should not be needed ? */
|
2735 |
} else
|
2736 |
#endif
|
2737 |
{ |
2738 |
raise_exception_err(EXCP0D_GPF, 0);
|
2739 |
} |
2740 |
} else {
|
2741 |
if ((new_ss & 3) != rpl) |
2742 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
2743 |
if (load_segment(&ss_e1, &ss_e2, new_ss) != 0) |
2744 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
2745 |
if (!(ss_e2 & DESC_S_MASK) ||
|
2746 |
(ss_e2 & DESC_CS_MASK) || |
2747 |
!(ss_e2 & DESC_W_MASK)) |
2748 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
2749 |
dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
2750 |
if (dpl != rpl)
|
2751 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
2752 |
if (!(ss_e2 & DESC_P_MASK))
|
2753 |
raise_exception_err(EXCP0B_NOSEG, new_ss & 0xfffc);
|
2754 |
cpu_x86_load_seg_cache(env, R_SS, new_ss, |
2755 |
get_seg_base(ss_e1, ss_e2), |
2756 |
get_seg_limit(ss_e1, ss_e2), |
2757 |
ss_e2); |
2758 |
} |
2759 |
|
2760 |
cpu_x86_load_seg_cache(env, R_CS, new_cs, |
2761 |
get_seg_base(e1, e2), |
2762 |
get_seg_limit(e1, e2), |
2763 |
e2); |
2764 |
cpu_x86_set_cpl(env, rpl); |
2765 |
sp = new_esp; |
2766 |
#ifdef TARGET_X86_64
|
2767 |
if (env->hflags & HF_CS64_MASK)
|
2768 |
sp_mask = -1;
|
2769 |
else
|
2770 |
#endif
|
2771 |
sp_mask = get_sp_mask(ss_e2); |
2772 |
|
2773 |
/* validate data segments */
|
2774 |
validate_seg(R_ES, rpl); |
2775 |
validate_seg(R_DS, rpl); |
2776 |
validate_seg(R_FS, rpl); |
2777 |
validate_seg(R_GS, rpl); |
2778 |
|
2779 |
sp += addend; |
2780 |
} |
2781 |
SET_ESP(sp, sp_mask); |
2782 |
env->eip = new_eip; |
2783 |
if (is_iret) {
|
2784 |
/* NOTE: 'cpl' is the _old_ CPL */
|
2785 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | RF_MASK | NT_MASK; |
2786 |
if (cpl == 0) |
2787 |
eflags_mask |= IOPL_MASK; |
2788 |
iopl = (env->eflags >> IOPL_SHIFT) & 3;
|
2789 |
if (cpl <= iopl)
|
2790 |
eflags_mask |= IF_MASK; |
2791 |
if (shift == 0) |
2792 |
eflags_mask &= 0xffff;
|
2793 |
load_eflags(new_eflags, eflags_mask); |
2794 |
} |
2795 |
return;
|
2796 |
|
2797 |
return_to_vm86:
|
2798 |
POPL(ssp, sp, sp_mask, new_esp); |
2799 |
POPL(ssp, sp, sp_mask, new_ss); |
2800 |
POPL(ssp, sp, sp_mask, new_es); |
2801 |
POPL(ssp, sp, sp_mask, new_ds); |
2802 |
POPL(ssp, sp, sp_mask, new_fs); |
2803 |
POPL(ssp, sp, sp_mask, new_gs); |
2804 |
|
2805 |
/* modify processor state */
|
2806 |
load_eflags(new_eflags, TF_MASK | AC_MASK | ID_MASK | |
2807 |
IF_MASK | IOPL_MASK | VM_MASK | NT_MASK | VIF_MASK | VIP_MASK); |
2808 |
load_seg_vm(R_CS, new_cs & 0xffff);
|
2809 |
cpu_x86_set_cpl(env, 3);
|
2810 |
load_seg_vm(R_SS, new_ss & 0xffff);
|
2811 |
load_seg_vm(R_ES, new_es & 0xffff);
|
2812 |
load_seg_vm(R_DS, new_ds & 0xffff);
|
2813 |
load_seg_vm(R_FS, new_fs & 0xffff);
|
2814 |
load_seg_vm(R_GS, new_gs & 0xffff);
|
2815 |
|
2816 |
env->eip = new_eip & 0xffff;
|
2817 |
ESP = new_esp; |
2818 |
} |
2819 |
|
2820 |
void helper_iret_protected(int shift, int next_eip) |
2821 |
{ |
2822 |
int tss_selector, type;
|
2823 |
uint32_t e1, e2; |
2824 |
|
2825 |
/* specific case for TSS */
|
2826 |
if (env->eflags & NT_MASK) {
|
2827 |
#ifdef TARGET_X86_64
|
2828 |
if (env->hflags & HF_LMA_MASK)
|
2829 |
raise_exception_err(EXCP0D_GPF, 0);
|
2830 |
#endif
|
2831 |
tss_selector = lduw_kernel(env->tr.base + 0);
|
2832 |
if (tss_selector & 4) |
2833 |
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
2834 |
if (load_segment(&e1, &e2, tss_selector) != 0) |
2835 |
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
2836 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x17;
|
2837 |
/* NOTE: we check both segment and busy TSS */
|
2838 |
if (type != 3) |
2839 |
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
2840 |
switch_tss(tss_selector, e1, e2, SWITCH_TSS_IRET, next_eip); |
2841 |
} else {
|
2842 |
helper_ret_protected(shift, 1, 0); |
2843 |
} |
2844 |
env->hflags &= ~HF_NMI_MASK; |
2845 |
#ifdef USE_KQEMU
|
2846 |
if (kqemu_is_ok(env)) {
|
2847 |
CC_OP = CC_OP_EFLAGS; |
2848 |
env->exception_index = -1;
|
2849 |
cpu_loop_exit(); |
2850 |
} |
2851 |
#endif
|
2852 |
} |
2853 |
|
2854 |
void helper_lret_protected(int shift, int addend) |
2855 |
{ |
2856 |
helper_ret_protected(shift, 0, addend);
|
2857 |
#ifdef USE_KQEMU
|
2858 |
if (kqemu_is_ok(env)) {
|
2859 |
env->exception_index = -1;
|
2860 |
cpu_loop_exit(); |
2861 |
} |
2862 |
#endif
|
2863 |
} |
2864 |
|
2865 |
void helper_sysenter(void) |
2866 |
{ |
2867 |
if (env->sysenter_cs == 0) { |
2868 |
raise_exception_err(EXCP0D_GPF, 0);
|
2869 |
} |
2870 |
env->eflags &= ~(VM_MASK | IF_MASK | RF_MASK); |
2871 |
cpu_x86_set_cpl(env, 0);
|
2872 |
cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 0xfffc,
|
2873 |
0, 0xffffffff, |
2874 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2875 |
DESC_S_MASK | |
2876 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
2877 |
cpu_x86_load_seg_cache(env, R_SS, (env->sysenter_cs + 8) & 0xfffc, |
2878 |
0, 0xffffffff, |
2879 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2880 |
DESC_S_MASK | |
2881 |
DESC_W_MASK | DESC_A_MASK); |
2882 |
ESP = env->sysenter_esp; |
2883 |
EIP = env->sysenter_eip; |
2884 |
} |
2885 |
|
2886 |
void helper_sysexit(void) |
2887 |
{ |
2888 |
int cpl;
|
2889 |
|
2890 |
cpl = env->hflags & HF_CPL_MASK; |
2891 |
if (env->sysenter_cs == 0 || cpl != 0) { |
2892 |
raise_exception_err(EXCP0D_GPF, 0);
|
2893 |
} |
2894 |
cpu_x86_set_cpl(env, 3);
|
2895 |
cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 16) & 0xfffc) | 3, |
2896 |
0, 0xffffffff, |
2897 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2898 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
2899 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
2900 |
cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 24) & 0xfffc) | 3, |
2901 |
0, 0xffffffff, |
2902 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2903 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
2904 |
DESC_W_MASK | DESC_A_MASK); |
2905 |
ESP = ECX; |
2906 |
EIP = EDX; |
2907 |
#ifdef USE_KQEMU
|
2908 |
if (kqemu_is_ok(env)) {
|
2909 |
env->exception_index = -1;
|
2910 |
cpu_loop_exit(); |
2911 |
} |
2912 |
#endif
|
2913 |
} |
2914 |
|
2915 |
void helper_movl_crN_T0(int reg, target_ulong t0) |
2916 |
{ |
2917 |
#if !defined(CONFIG_USER_ONLY)
|
2918 |
switch(reg) {
|
2919 |
case 0: |
2920 |
cpu_x86_update_cr0(env, t0); |
2921 |
break;
|
2922 |
case 3: |
2923 |
cpu_x86_update_cr3(env, t0); |
2924 |
break;
|
2925 |
case 4: |
2926 |
cpu_x86_update_cr4(env, t0); |
2927 |
break;
|
2928 |
case 8: |
2929 |
cpu_set_apic_tpr(env, t0); |
2930 |
env->cr[8] = t0;
|
2931 |
break;
|
2932 |
default:
|
2933 |
env->cr[reg] = t0; |
2934 |
break;
|
2935 |
} |
2936 |
#endif
|
2937 |
} |
2938 |
|
2939 |
void helper_lmsw(target_ulong t0)
|
2940 |
{ |
2941 |
/* only 4 lower bits of CR0 are modified. PE cannot be set to zero
|
2942 |
if already set to one. */
|
2943 |
t0 = (env->cr[0] & ~0xe) | (t0 & 0xf); |
2944 |
helper_movl_crN_T0(0, t0);
|
2945 |
} |
2946 |
|
2947 |
void helper_clts(void) |
2948 |
{ |
2949 |
env->cr[0] &= ~CR0_TS_MASK;
|
2950 |
env->hflags &= ~HF_TS_MASK; |
2951 |
} |
2952 |
|
2953 |
#if !defined(CONFIG_USER_ONLY)
|
2954 |
target_ulong helper_movtl_T0_cr8(void)
|
2955 |
{ |
2956 |
return cpu_get_apic_tpr(env);
|
2957 |
} |
2958 |
#endif
|
2959 |
|
2960 |
/* XXX: do more */
|
2961 |
void helper_movl_drN_T0(int reg, target_ulong t0) |
2962 |
{ |
2963 |
env->dr[reg] = t0; |
2964 |
} |
2965 |
|
2966 |
void helper_invlpg(target_ulong addr)
|
2967 |
{ |
2968 |
cpu_x86_flush_tlb(env, addr); |
2969 |
} |
2970 |
|
2971 |
void helper_rdtsc(void) |
2972 |
{ |
2973 |
uint64_t val; |
2974 |
|
2975 |
if ((env->cr[4] & CR4_TSD_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) { |
2976 |
raise_exception(EXCP0D_GPF); |
2977 |
} |
2978 |
val = cpu_get_tsc(env); |
2979 |
EAX = (uint32_t)(val); |
2980 |
EDX = (uint32_t)(val >> 32);
|
2981 |
} |
2982 |
|
2983 |
void helper_rdpmc(void) |
2984 |
{ |
2985 |
if ((env->cr[4] & CR4_PCE_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) { |
2986 |
raise_exception(EXCP0D_GPF); |
2987 |
} |
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 |
val = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
3009 |
|
3010 |
switch((uint32_t)ECX) {
|
3011 |
case MSR_IA32_SYSENTER_CS:
|
3012 |
env->sysenter_cs = val & 0xffff;
|
3013 |
break;
|
3014 |
case MSR_IA32_SYSENTER_ESP:
|
3015 |
env->sysenter_esp = val; |
3016 |
break;
|
3017 |
case MSR_IA32_SYSENTER_EIP:
|
3018 |
env->sysenter_eip = val; |
3019 |
break;
|
3020 |
case MSR_IA32_APICBASE:
|
3021 |
cpu_set_apic_base(env, val); |
3022 |
break;
|
3023 |
case MSR_EFER:
|
3024 |
{ |
3025 |
uint64_t update_mask; |
3026 |
update_mask = 0;
|
3027 |
if (env->cpuid_ext2_features & CPUID_EXT2_SYSCALL)
|
3028 |
update_mask |= MSR_EFER_SCE; |
3029 |
if (env->cpuid_ext2_features & CPUID_EXT2_LM)
|
3030 |
update_mask |= MSR_EFER_LME; |
3031 |
if (env->cpuid_ext2_features & CPUID_EXT2_FFXSR)
|
3032 |
update_mask |= MSR_EFER_FFXSR; |
3033 |
if (env->cpuid_ext2_features & CPUID_EXT2_NX)
|
3034 |
update_mask |= MSR_EFER_NXE; |
3035 |
env->efer = (env->efer & ~update_mask) | |
3036 |
(val & update_mask); |
3037 |
} |
3038 |
break;
|
3039 |
case MSR_STAR:
|
3040 |
env->star = val; |
3041 |
break;
|
3042 |
case MSR_PAT:
|
3043 |
env->pat = val; |
3044 |
break;
|
3045 |
case MSR_VM_HSAVE_PA:
|
3046 |
env->vm_hsave = val; |
3047 |
break;
|
3048 |
#ifdef TARGET_X86_64
|
3049 |
case MSR_LSTAR:
|
3050 |
env->lstar = val; |
3051 |
break;
|
3052 |
case MSR_CSTAR:
|
3053 |
env->cstar = val; |
3054 |
break;
|
3055 |
case MSR_FMASK:
|
3056 |
env->fmask = val; |
3057 |
break;
|
3058 |
case MSR_FSBASE:
|
3059 |
env->segs[R_FS].base = val; |
3060 |
break;
|
3061 |
case MSR_GSBASE:
|
3062 |
env->segs[R_GS].base = val; |
3063 |
break;
|
3064 |
case MSR_KERNELGSBASE:
|
3065 |
env->kernelgsbase = val; |
3066 |
break;
|
3067 |
#endif
|
3068 |
default:
|
3069 |
/* XXX: exception ? */
|
3070 |
break;
|
3071 |
} |
3072 |
} |
3073 |
|
3074 |
void helper_rdmsr(void) |
3075 |
{ |
3076 |
uint64_t val; |
3077 |
switch((uint32_t)ECX) {
|
3078 |
case MSR_IA32_SYSENTER_CS:
|
3079 |
val = env->sysenter_cs; |
3080 |
break;
|
3081 |
case MSR_IA32_SYSENTER_ESP:
|
3082 |
val = env->sysenter_esp; |
3083 |
break;
|
3084 |
case MSR_IA32_SYSENTER_EIP:
|
3085 |
val = env->sysenter_eip; |
3086 |
break;
|
3087 |
case MSR_IA32_APICBASE:
|
3088 |
val = cpu_get_apic_base(env); |
3089 |
break;
|
3090 |
case MSR_EFER:
|
3091 |
val = env->efer; |
3092 |
break;
|
3093 |
case MSR_STAR:
|
3094 |
val = env->star; |
3095 |
break;
|
3096 |
case MSR_PAT:
|
3097 |
val = env->pat; |
3098 |
break;
|
3099 |
case MSR_VM_HSAVE_PA:
|
3100 |
val = env->vm_hsave; |
3101 |
break;
|
3102 |
#ifdef TARGET_X86_64
|
3103 |
case MSR_LSTAR:
|
3104 |
val = env->lstar; |
3105 |
break;
|
3106 |
case MSR_CSTAR:
|
3107 |
val = env->cstar; |
3108 |
break;
|
3109 |
case MSR_FMASK:
|
3110 |
val = env->fmask; |
3111 |
break;
|
3112 |
case MSR_FSBASE:
|
3113 |
val = env->segs[R_FS].base; |
3114 |
break;
|
3115 |
case MSR_GSBASE:
|
3116 |
val = env->segs[R_GS].base; |
3117 |
break;
|
3118 |
case MSR_KERNELGSBASE:
|
3119 |
val = env->kernelgsbase; |
3120 |
break;
|
3121 |
#endif
|
3122 |
default:
|
3123 |
/* XXX: exception ? */
|
3124 |
val = 0;
|
3125 |
break;
|
3126 |
} |
3127 |
EAX = (uint32_t)(val); |
3128 |
EDX = (uint32_t)(val >> 32);
|
3129 |
} |
3130 |
#endif
|
3131 |
|
3132 |
uint32_t helper_lsl(uint32_t selector) |
3133 |
{ |
3134 |
unsigned int limit; |
3135 |
uint32_t e1, e2, eflags; |
3136 |
int rpl, dpl, cpl, type;
|
3137 |
|
3138 |
selector &= 0xffff;
|
3139 |
eflags = cc_table[CC_OP].compute_all(); |
3140 |
if (load_segment(&e1, &e2, selector) != 0) |
3141 |
goto fail;
|
3142 |
rpl = selector & 3;
|
3143 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
3144 |
cpl = env->hflags & HF_CPL_MASK; |
3145 |
if (e2 & DESC_S_MASK) {
|
3146 |
if ((e2 & DESC_CS_MASK) && (e2 & DESC_C_MASK)) {
|
3147 |
/* conforming */
|
3148 |
} else {
|
3149 |
if (dpl < cpl || dpl < rpl)
|
3150 |
goto fail;
|
3151 |
} |
3152 |
} else {
|
3153 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
3154 |
switch(type) {
|
3155 |
case 1: |
3156 |
case 2: |
3157 |
case 3: |
3158 |
case 9: |
3159 |
case 11: |
3160 |
break;
|
3161 |
default:
|
3162 |
goto fail;
|
3163 |
} |
3164 |
if (dpl < cpl || dpl < rpl) {
|
3165 |
fail:
|
3166 |
CC_SRC = eflags & ~CC_Z; |
3167 |
return 0; |
3168 |
} |
3169 |
} |
3170 |
limit = get_seg_limit(e1, e2); |
3171 |
CC_SRC = eflags | CC_Z; |
3172 |
return limit;
|
3173 |
} |
3174 |
|
3175 |
uint32_t helper_lar(uint32_t selector) |
3176 |
{ |
3177 |
uint32_t e1, e2, eflags; |
3178 |
int rpl, dpl, cpl, type;
|
3179 |
|
3180 |
selector &= 0xffff;
|
3181 |
eflags = cc_table[CC_OP].compute_all(); |
3182 |
if ((selector & 0xfffc) == 0) |
3183 |
goto fail;
|
3184 |
if (load_segment(&e1, &e2, selector) != 0) |
3185 |
goto fail;
|
3186 |
rpl = selector & 3;
|
3187 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
3188 |
cpl = env->hflags & HF_CPL_MASK; |
3189 |
if (e2 & DESC_S_MASK) {
|
3190 |
if ((e2 & DESC_CS_MASK) && (e2 & DESC_C_MASK)) {
|
3191 |
/* conforming */
|
3192 |
} else {
|
3193 |
if (dpl < cpl || dpl < rpl)
|
3194 |
goto fail;
|
3195 |
} |
3196 |
} else {
|
3197 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
3198 |
switch(type) {
|
3199 |
case 1: |
3200 |
case 2: |
3201 |
case 3: |
3202 |
case 4: |
3203 |
case 5: |
3204 |
case 9: |
3205 |
case 11: |
3206 |
case 12: |
3207 |
break;
|
3208 |
default:
|
3209 |
goto fail;
|
3210 |
} |
3211 |
if (dpl < cpl || dpl < rpl) {
|
3212 |
fail:
|
3213 |
CC_SRC = eflags & ~CC_Z; |
3214 |
return 0; |
3215 |
} |
3216 |
} |
3217 |
CC_SRC = eflags | CC_Z; |
3218 |
return e2 & 0x00f0ff00; |
3219 |
} |
3220 |
|
3221 |
void helper_verr(uint32_t selector)
|
3222 |
{ |
3223 |
uint32_t e1, e2, eflags; |
3224 |
int rpl, dpl, cpl;
|
3225 |
|
3226 |
selector &= 0xffff;
|
3227 |
eflags = cc_table[CC_OP].compute_all(); |
3228 |
if ((selector & 0xfffc) == 0) |
3229 |
goto fail;
|
3230 |
if (load_segment(&e1, &e2, selector) != 0) |
3231 |
goto fail;
|
3232 |
if (!(e2 & DESC_S_MASK))
|
3233 |
goto fail;
|
3234 |
rpl = selector & 3;
|
3235 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
3236 |
cpl = env->hflags & HF_CPL_MASK; |
3237 |
if (e2 & DESC_CS_MASK) {
|
3238 |
if (!(e2 & DESC_R_MASK))
|
3239 |
goto fail;
|
3240 |
if (!(e2 & DESC_C_MASK)) {
|
3241 |
if (dpl < cpl || dpl < rpl)
|
3242 |
goto fail;
|
3243 |
} |
3244 |
} else {
|
3245 |
if (dpl < cpl || dpl < rpl) {
|
3246 |
fail:
|
3247 |
CC_SRC = eflags & ~CC_Z; |
3248 |
return;
|
3249 |
} |
3250 |
} |
3251 |
CC_SRC = eflags | CC_Z; |
3252 |
} |
3253 |
|
3254 |
void helper_verw(uint32_t selector)
|
3255 |
{ |
3256 |
uint32_t e1, e2, eflags; |
3257 |
int rpl, dpl, cpl;
|
3258 |
|
3259 |
selector &= 0xffff;
|
3260 |
eflags = cc_table[CC_OP].compute_all(); |
3261 |
if ((selector & 0xfffc) == 0) |
3262 |
goto fail;
|
3263 |
if (load_segment(&e1, &e2, selector) != 0) |
3264 |
goto fail;
|
3265 |
if (!(e2 & DESC_S_MASK))
|
3266 |
goto fail;
|
3267 |
rpl = selector & 3;
|
3268 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
3269 |
cpl = env->hflags & HF_CPL_MASK; |
3270 |
if (e2 & DESC_CS_MASK) {
|
3271 |
goto fail;
|
3272 |
} else {
|
3273 |
if (dpl < cpl || dpl < rpl)
|
3274 |
goto fail;
|
3275 |
if (!(e2 & DESC_W_MASK)) {
|
3276 |
fail:
|
3277 |
CC_SRC = eflags & ~CC_Z; |
3278 |
return;
|
3279 |
} |
3280 |
} |
3281 |
CC_SRC = eflags | CC_Z; |
3282 |
} |
3283 |
|
3284 |
/* x87 FPU helpers */
|
3285 |
|
3286 |
static void fpu_set_exception(int mask) |
3287 |
{ |
3288 |
env->fpus |= mask; |
3289 |
if (env->fpus & (~env->fpuc & FPUC_EM))
|
3290 |
env->fpus |= FPUS_SE | FPUS_B; |
3291 |
} |
3292 |
|
3293 |
static inline CPU86_LDouble helper_fdiv(CPU86_LDouble a, CPU86_LDouble b) |
3294 |
{ |
3295 |
if (b == 0.0) |
3296 |
fpu_set_exception(FPUS_ZE); |
3297 |
return a / b;
|
3298 |
} |
3299 |
|
3300 |
void fpu_raise_exception(void) |
3301 |
{ |
3302 |
if (env->cr[0] & CR0_NE_MASK) { |
3303 |
raise_exception(EXCP10_COPR); |
3304 |
} |
3305 |
#if !defined(CONFIG_USER_ONLY)
|
3306 |
else {
|
3307 |
cpu_set_ferr(env); |
3308 |
} |
3309 |
#endif
|
3310 |
} |
3311 |
|
3312 |
void helper_flds_FT0(uint32_t val)
|
3313 |
{ |
3314 |
union {
|
3315 |
float32 f; |
3316 |
uint32_t i; |
3317 |
} u; |
3318 |
u.i = val; |
3319 |
FT0 = float32_to_floatx(u.f, &env->fp_status); |
3320 |
} |
3321 |
|
3322 |
void helper_fldl_FT0(uint64_t val)
|
3323 |
{ |
3324 |
union {
|
3325 |
float64 f; |
3326 |
uint64_t i; |
3327 |
} u; |
3328 |
u.i = val; |
3329 |
FT0 = float64_to_floatx(u.f, &env->fp_status); |
3330 |
} |
3331 |
|
3332 |
void helper_fildl_FT0(int32_t val)
|
3333 |
{ |
3334 |
FT0 = int32_to_floatx(val, &env->fp_status); |
3335 |
} |
3336 |
|
3337 |
void helper_flds_ST0(uint32_t val)
|
3338 |
{ |
3339 |
int new_fpstt;
|
3340 |
union {
|
3341 |
float32 f; |
3342 |
uint32_t i; |
3343 |
} u; |
3344 |
new_fpstt = (env->fpstt - 1) & 7; |
3345 |
u.i = val; |
3346 |
env->fpregs[new_fpstt].d = float32_to_floatx(u.f, &env->fp_status); |
3347 |
env->fpstt = new_fpstt; |
3348 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
3349 |
} |
3350 |
|
3351 |
void helper_fldl_ST0(uint64_t val)
|
3352 |
{ |
3353 |
int new_fpstt;
|
3354 |
union {
|
3355 |
float64 f; |
3356 |
uint64_t i; |
3357 |
} u; |
3358 |
new_fpstt = (env->fpstt - 1) & 7; |
3359 |
u.i = val; |
3360 |
env->fpregs[new_fpstt].d = float64_to_floatx(u.f, &env->fp_status); |
3361 |
env->fpstt = new_fpstt; |
3362 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
3363 |
} |
3364 |
|
3365 |
void helper_fildl_ST0(int32_t val)
|
3366 |
{ |
3367 |
int new_fpstt;
|
3368 |
new_fpstt = (env->fpstt - 1) & 7; |
3369 |
env->fpregs[new_fpstt].d = int32_to_floatx(val, &env->fp_status); |
3370 |
env->fpstt = new_fpstt; |
3371 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
3372 |
} |
3373 |
|
3374 |
void helper_fildll_ST0(int64_t val)
|
3375 |
{ |
3376 |
int new_fpstt;
|
3377 |
new_fpstt = (env->fpstt - 1) & 7; |
3378 |
env->fpregs[new_fpstt].d = int64_to_floatx(val, &env->fp_status); |
3379 |
env->fpstt = new_fpstt; |
3380 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
3381 |
} |
3382 |
|
3383 |
uint32_t helper_fsts_ST0(void)
|
3384 |
{ |
3385 |
union {
|
3386 |
float32 f; |
3387 |
uint32_t i; |
3388 |
} u; |
3389 |
u.f = floatx_to_float32(ST0, &env->fp_status); |
3390 |
return u.i;
|
3391 |
} |
3392 |
|
3393 |
uint64_t helper_fstl_ST0(void)
|
3394 |
{ |
3395 |
union {
|
3396 |
float64 f; |
3397 |
uint64_t i; |
3398 |
} u; |
3399 |
u.f = floatx_to_float64(ST0, &env->fp_status); |
3400 |
return u.i;
|
3401 |
} |
3402 |
|
3403 |
int32_t helper_fist_ST0(void)
|
3404 |
{ |
3405 |
int32_t val; |
3406 |
val = floatx_to_int32(ST0, &env->fp_status); |
3407 |
if (val != (int16_t)val)
|
3408 |
val = -32768;
|
3409 |
return val;
|
3410 |
} |
3411 |
|
3412 |
int32_t helper_fistl_ST0(void)
|
3413 |
{ |
3414 |
int32_t val; |
3415 |
val = floatx_to_int32(ST0, &env->fp_status); |
3416 |
return val;
|
3417 |
} |
3418 |
|
3419 |
int64_t helper_fistll_ST0(void)
|
3420 |
{ |
3421 |
int64_t val; |
3422 |
val = floatx_to_int64(ST0, &env->fp_status); |
3423 |
return val;
|
3424 |
} |
3425 |
|
3426 |
int32_t helper_fistt_ST0(void)
|
3427 |
{ |
3428 |
int32_t val; |
3429 |
val = floatx_to_int32_round_to_zero(ST0, &env->fp_status); |
3430 |
if (val != (int16_t)val)
|
3431 |
val = -32768;
|
3432 |
return val;
|
3433 |
} |
3434 |
|
3435 |
int32_t helper_fisttl_ST0(void)
|
3436 |
{ |
3437 |
int32_t val; |
3438 |
val = floatx_to_int32_round_to_zero(ST0, &env->fp_status); |
3439 |
return val;
|
3440 |
} |
3441 |
|
3442 |
int64_t helper_fisttll_ST0(void)
|
3443 |
{ |
3444 |
int64_t val; |
3445 |
val = floatx_to_int64_round_to_zero(ST0, &env->fp_status); |
3446 |
return val;
|
3447 |
} |
3448 |
|
3449 |
void helper_fldt_ST0(target_ulong ptr)
|
3450 |
{ |
3451 |
int new_fpstt;
|
3452 |
new_fpstt = (env->fpstt - 1) & 7; |
3453 |
env->fpregs[new_fpstt].d = helper_fldt(ptr); |
3454 |
env->fpstt = new_fpstt; |
3455 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
3456 |
} |
3457 |
|
3458 |
void helper_fstt_ST0(target_ulong ptr)
|
3459 |
{ |
3460 |
helper_fstt(ST0, ptr); |
3461 |
} |
3462 |
|
3463 |
void helper_fpush(void) |
3464 |
{ |
3465 |
fpush(); |
3466 |
} |
3467 |
|
3468 |
void helper_fpop(void) |
3469 |
{ |
3470 |
fpop(); |
3471 |
} |
3472 |
|
3473 |
void helper_fdecstp(void) |
3474 |
{ |
3475 |
env->fpstt = (env->fpstt - 1) & 7; |
3476 |
env->fpus &= (~0x4700);
|
3477 |
} |
3478 |
|
3479 |
void helper_fincstp(void) |
3480 |
{ |
3481 |
env->fpstt = (env->fpstt + 1) & 7; |
3482 |
env->fpus &= (~0x4700);
|
3483 |
} |
3484 |
|
3485 |
/* FPU move */
|
3486 |
|
3487 |
void helper_ffree_STN(int st_index) |
3488 |
{ |
3489 |
env->fptags[(env->fpstt + st_index) & 7] = 1; |
3490 |
} |
3491 |
|
3492 |
void helper_fmov_ST0_FT0(void) |
3493 |
{ |
3494 |
ST0 = FT0; |
3495 |
} |
3496 |
|
3497 |
void helper_fmov_FT0_STN(int st_index) |
3498 |
{ |
3499 |
FT0 = ST(st_index); |
3500 |
} |
3501 |
|
3502 |
void helper_fmov_ST0_STN(int st_index) |
3503 |
{ |
3504 |
ST0 = ST(st_index); |
3505 |
} |
3506 |
|
3507 |
void helper_fmov_STN_ST0(int st_index) |
3508 |
{ |
3509 |
ST(st_index) = ST0; |
3510 |
} |
3511 |
|
3512 |
void helper_fxchg_ST0_STN(int st_index) |
3513 |
{ |
3514 |
CPU86_LDouble tmp; |
3515 |
tmp = ST(st_index); |
3516 |
ST(st_index) = ST0; |
3517 |
ST0 = tmp; |
3518 |
} |
3519 |
|
3520 |
/* FPU operations */
|
3521 |
|
3522 |
static const int fcom_ccval[4] = {0x0100, 0x4000, 0x0000, 0x4500}; |
3523 |
|
3524 |
void helper_fcom_ST0_FT0(void) |
3525 |
{ |
3526 |
int ret;
|
3527 |
|
3528 |
ret = floatx_compare(ST0, FT0, &env->fp_status); |
3529 |
env->fpus = (env->fpus & ~0x4500) | fcom_ccval[ret + 1]; |
3530 |
FORCE_RET(); |
3531 |
} |
3532 |
|
3533 |
void helper_fucom_ST0_FT0(void) |
3534 |
{ |
3535 |
int ret;
|
3536 |
|
3537 |
ret = floatx_compare_quiet(ST0, FT0, &env->fp_status); |
3538 |
env->fpus = (env->fpus & ~0x4500) | fcom_ccval[ret+ 1]; |
3539 |
FORCE_RET(); |
3540 |
} |
3541 |
|
3542 |
static const int fcomi_ccval[4] = {CC_C, CC_Z, 0, CC_Z | CC_P | CC_C}; |
3543 |
|
3544 |
void helper_fcomi_ST0_FT0(void) |
3545 |
{ |
3546 |
int eflags;
|
3547 |
int ret;
|
3548 |
|
3549 |
ret = floatx_compare(ST0, FT0, &env->fp_status); |
3550 |
eflags = cc_table[CC_OP].compute_all(); |
3551 |
eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | fcomi_ccval[ret + 1];
|
3552 |
CC_SRC = eflags; |
3553 |
FORCE_RET(); |
3554 |
} |
3555 |
|
3556 |
void helper_fucomi_ST0_FT0(void) |
3557 |
{ |
3558 |
int eflags;
|
3559 |
int ret;
|
3560 |
|
3561 |
ret = floatx_compare_quiet(ST0, FT0, &env->fp_status); |
3562 |
eflags = cc_table[CC_OP].compute_all(); |
3563 |
eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | fcomi_ccval[ret + 1];
|
3564 |
CC_SRC = eflags; |
3565 |
FORCE_RET(); |
3566 |
} |
3567 |
|
3568 |
void helper_fadd_ST0_FT0(void) |
3569 |
{ |
3570 |
ST0 += FT0; |
3571 |
} |
3572 |
|
3573 |
void helper_fmul_ST0_FT0(void) |
3574 |
{ |
3575 |
ST0 *= FT0; |
3576 |
} |
3577 |
|
3578 |
void helper_fsub_ST0_FT0(void) |
3579 |
{ |
3580 |
ST0 -= FT0; |
3581 |
} |
3582 |
|
3583 |
void helper_fsubr_ST0_FT0(void) |
3584 |
{ |
3585 |
ST0 = FT0 - ST0; |
3586 |
} |
3587 |
|
3588 |
void helper_fdiv_ST0_FT0(void) |
3589 |
{ |
3590 |
ST0 = helper_fdiv(ST0, FT0); |
3591 |
} |
3592 |
|
3593 |
void helper_fdivr_ST0_FT0(void) |
3594 |
{ |
3595 |
ST0 = helper_fdiv(FT0, ST0); |
3596 |
} |
3597 |
|
3598 |
/* fp operations between STN and ST0 */
|
3599 |
|
3600 |
void helper_fadd_STN_ST0(int st_index) |
3601 |
{ |
3602 |
ST(st_index) += ST0; |
3603 |
} |
3604 |
|
3605 |
void helper_fmul_STN_ST0(int st_index) |
3606 |
{ |
3607 |
ST(st_index) *= ST0; |
3608 |
} |
3609 |
|
3610 |
void helper_fsub_STN_ST0(int st_index) |
3611 |
{ |
3612 |
ST(st_index) -= ST0; |
3613 |
} |
3614 |
|
3615 |
void helper_fsubr_STN_ST0(int st_index) |
3616 |
{ |
3617 |
CPU86_LDouble *p; |
3618 |
p = &ST(st_index); |
3619 |
*p = ST0 - *p; |
3620 |
} |
3621 |
|
3622 |
void helper_fdiv_STN_ST0(int st_index) |
3623 |
{ |
3624 |
CPU86_LDouble *p; |
3625 |
p = &ST(st_index); |
3626 |
*p = helper_fdiv(*p, ST0); |
3627 |
} |
3628 |
|
3629 |
void helper_fdivr_STN_ST0(int st_index) |
3630 |
{ |
3631 |
CPU86_LDouble *p; |
3632 |
p = &ST(st_index); |
3633 |
*p = helper_fdiv(ST0, *p); |
3634 |
} |
3635 |
|
3636 |
/* misc FPU operations */
|
3637 |
void helper_fchs_ST0(void) |
3638 |
{ |
3639 |
ST0 = floatx_chs(ST0); |
3640 |
} |
3641 |
|
3642 |
void helper_fabs_ST0(void) |
3643 |
{ |
3644 |
ST0 = floatx_abs(ST0); |
3645 |
} |
3646 |
|
3647 |
void helper_fld1_ST0(void) |
3648 |
{ |
3649 |
ST0 = f15rk[1];
|
3650 |
} |
3651 |
|
3652 |
void helper_fldl2t_ST0(void) |
3653 |
{ |
3654 |
ST0 = f15rk[6];
|
3655 |
} |
3656 |
|
3657 |
void helper_fldl2e_ST0(void) |
3658 |
{ |
3659 |
ST0 = f15rk[5];
|
3660 |
} |
3661 |
|
3662 |
void helper_fldpi_ST0(void) |
3663 |
{ |
3664 |
ST0 = f15rk[2];
|
3665 |
} |
3666 |
|
3667 |
void helper_fldlg2_ST0(void) |
3668 |
{ |
3669 |
ST0 = f15rk[3];
|
3670 |
} |
3671 |
|
3672 |
void helper_fldln2_ST0(void) |
3673 |
{ |
3674 |
ST0 = f15rk[4];
|
3675 |
} |
3676 |
|
3677 |
void helper_fldz_ST0(void) |
3678 |
{ |
3679 |
ST0 = f15rk[0];
|
3680 |
} |
3681 |
|
3682 |
void helper_fldz_FT0(void) |
3683 |
{ |
3684 |
FT0 = f15rk[0];
|
3685 |
} |
3686 |
|
3687 |
uint32_t helper_fnstsw(void)
|
3688 |
{ |
3689 |
return (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
3690 |
} |
3691 |
|
3692 |
uint32_t helper_fnstcw(void)
|
3693 |
{ |
3694 |
return env->fpuc;
|
3695 |
} |
3696 |
|
3697 |
static void update_fp_status(void) |
3698 |
{ |
3699 |
int rnd_type;
|
3700 |
|
3701 |
/* set rounding mode */
|
3702 |
switch(env->fpuc & RC_MASK) {
|
3703 |
default:
|
3704 |
case RC_NEAR:
|
3705 |
rnd_type = float_round_nearest_even; |
3706 |
break;
|
3707 |
case RC_DOWN:
|
3708 |
rnd_type = float_round_down; |
3709 |
break;
|
3710 |
case RC_UP:
|
3711 |
rnd_type = float_round_up; |
3712 |
break;
|
3713 |
case RC_CHOP:
|
3714 |
rnd_type = float_round_to_zero; |
3715 |
break;
|
3716 |
} |
3717 |
set_float_rounding_mode(rnd_type, &env->fp_status); |
3718 |
#ifdef FLOATX80
|
3719 |
switch((env->fpuc >> 8) & 3) { |
3720 |
case 0: |
3721 |
rnd_type = 32;
|
3722 |
break;
|
3723 |
case 2: |
3724 |
rnd_type = 64;
|
3725 |
break;
|
3726 |
case 3: |
3727 |
default:
|
3728 |
rnd_type = 80;
|
3729 |
break;
|
3730 |
} |
3731 |
set_floatx80_rounding_precision(rnd_type, &env->fp_status); |
3732 |
#endif
|
3733 |
} |
3734 |
|
3735 |
void helper_fldcw(uint32_t val)
|
3736 |
{ |
3737 |
env->fpuc = val; |
3738 |
update_fp_status(); |
3739 |
} |
3740 |
|
3741 |
void helper_fclex(void) |
3742 |
{ |
3743 |
env->fpus &= 0x7f00;
|
3744 |
} |
3745 |
|
3746 |
void helper_fwait(void) |
3747 |
{ |
3748 |
if (env->fpus & FPUS_SE)
|
3749 |
fpu_raise_exception(); |
3750 |
FORCE_RET(); |
3751 |
} |
3752 |
|
3753 |
void helper_fninit(void) |
3754 |
{ |
3755 |
env->fpus = 0;
|
3756 |
env->fpstt = 0;
|
3757 |
env->fpuc = 0x37f;
|
3758 |
env->fptags[0] = 1; |
3759 |
env->fptags[1] = 1; |
3760 |
env->fptags[2] = 1; |
3761 |
env->fptags[3] = 1; |
3762 |
env->fptags[4] = 1; |
3763 |
env->fptags[5] = 1; |
3764 |
env->fptags[6] = 1; |
3765 |
env->fptags[7] = 1; |
3766 |
} |
3767 |
|
3768 |
/* BCD ops */
|
3769 |
|
3770 |
void helper_fbld_ST0(target_ulong ptr)
|
3771 |
{ |
3772 |
CPU86_LDouble tmp; |
3773 |
uint64_t val; |
3774 |
unsigned int v; |
3775 |
int i;
|
3776 |
|
3777 |
val = 0;
|
3778 |
for(i = 8; i >= 0; i--) { |
3779 |
v = ldub(ptr + i); |
3780 |
val = (val * 100) + ((v >> 4) * 10) + (v & 0xf); |
3781 |
} |
3782 |
tmp = val; |
3783 |
if (ldub(ptr + 9) & 0x80) |
3784 |
tmp = -tmp; |
3785 |
fpush(); |
3786 |
ST0 = tmp; |
3787 |
} |
3788 |
|
3789 |
void helper_fbst_ST0(target_ulong ptr)
|
3790 |
{ |
3791 |
int v;
|
3792 |
target_ulong mem_ref, mem_end; |
3793 |
int64_t val; |
3794 |
|
3795 |
val = floatx_to_int64(ST0, &env->fp_status); |
3796 |
mem_ref = ptr; |
3797 |
mem_end = mem_ref + 9;
|
3798 |
if (val < 0) { |
3799 |
stb(mem_end, 0x80);
|
3800 |
val = -val; |
3801 |
} else {
|
3802 |
stb(mem_end, 0x00);
|
3803 |
} |
3804 |
while (mem_ref < mem_end) {
|
3805 |
if (val == 0) |
3806 |
break;
|
3807 |
v = val % 100;
|
3808 |
val = val / 100;
|
3809 |
v = ((v / 10) << 4) | (v % 10); |
3810 |
stb(mem_ref++, v); |
3811 |
} |
3812 |
while (mem_ref < mem_end) {
|
3813 |
stb(mem_ref++, 0);
|
3814 |
} |
3815 |
} |
3816 |
|
3817 |
void helper_f2xm1(void) |
3818 |
{ |
3819 |
ST0 = pow(2.0,ST0) - 1.0; |
3820 |
} |
3821 |
|
3822 |
void helper_fyl2x(void) |
3823 |
{ |
3824 |
CPU86_LDouble fptemp; |
3825 |
|
3826 |
fptemp = ST0; |
3827 |
if (fptemp>0.0){ |
3828 |
fptemp = log(fptemp)/log(2.0); /* log2(ST) */ |
3829 |
ST1 *= fptemp; |
3830 |
fpop(); |
3831 |
} else {
|
3832 |
env->fpus &= (~0x4700);
|
3833 |
env->fpus |= 0x400;
|
3834 |
} |
3835 |
} |
3836 |
|
3837 |
void helper_fptan(void) |
3838 |
{ |
3839 |
CPU86_LDouble fptemp; |
3840 |
|
3841 |
fptemp = ST0; |
3842 |
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
3843 |
env->fpus |= 0x400;
|
3844 |
} else {
|
3845 |
ST0 = tan(fptemp); |
3846 |
fpush(); |
3847 |
ST0 = 1.0; |
3848 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
3849 |
/* the above code is for |arg| < 2**52 only */
|
3850 |
} |
3851 |
} |
3852 |
|
3853 |
void helper_fpatan(void) |
3854 |
{ |
3855 |
CPU86_LDouble fptemp, fpsrcop; |
3856 |
|
3857 |
fpsrcop = ST1; |
3858 |
fptemp = ST0; |
3859 |
ST1 = atan2(fpsrcop,fptemp); |
3860 |
fpop(); |
3861 |
} |
3862 |
|
3863 |
void helper_fxtract(void) |
3864 |
{ |
3865 |
CPU86_LDoubleU temp; |
3866 |
unsigned int expdif; |
3867 |
|
3868 |
temp.d = ST0; |
3869 |
expdif = EXPD(temp) - EXPBIAS; |
3870 |
/*DP exponent bias*/
|
3871 |
ST0 = expdif; |
3872 |
fpush(); |
3873 |
BIASEXPONENT(temp); |
3874 |
ST0 = temp.d; |
3875 |
} |
3876 |
|
3877 |
void helper_fprem1(void) |
3878 |
{ |
3879 |
CPU86_LDouble dblq, fpsrcop, fptemp; |
3880 |
CPU86_LDoubleU fpsrcop1, fptemp1; |
3881 |
int expdif;
|
3882 |
signed long long int q; |
3883 |
|
3884 |
if (isinf(ST0) || isnan(ST0) || isnan(ST1) || (ST1 == 0.0)) { |
3885 |
ST0 = 0.0 / 0.0; /* NaN */ |
3886 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
3887 |
return;
|
3888 |
} |
3889 |
|
3890 |
fpsrcop = ST0; |
3891 |
fptemp = ST1; |
3892 |
fpsrcop1.d = fpsrcop; |
3893 |
fptemp1.d = fptemp; |
3894 |
expdif = EXPD(fpsrcop1) - EXPD(fptemp1); |
3895 |
|
3896 |
if (expdif < 0) { |
3897 |
/* optimisation? taken from the AMD docs */
|
3898 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
3899 |
/* ST0 is unchanged */
|
3900 |
return;
|
3901 |
} |
3902 |
|
3903 |
if (expdif < 53) { |
3904 |
dblq = fpsrcop / fptemp; |
3905 |
/* round dblq towards nearest integer */
|
3906 |
dblq = rint(dblq); |
3907 |
ST0 = fpsrcop - fptemp * dblq; |
3908 |
|
3909 |
/* convert dblq to q by truncating towards zero */
|
3910 |
if (dblq < 0.0) |
3911 |
q = (signed long long int)(-dblq); |
3912 |
else
|
3913 |
q = (signed long long int)dblq; |
3914 |
|
3915 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
3916 |
/* (C0,C3,C1) <-- (q2,q1,q0) */
|
3917 |
env->fpus |= (q & 0x4) << (8 - 2); /* (C0) <-- q2 */ |
3918 |
env->fpus |= (q & 0x2) << (14 - 1); /* (C3) <-- q1 */ |
3919 |
env->fpus |= (q & 0x1) << (9 - 0); /* (C1) <-- q0 */ |
3920 |
} else {
|
3921 |
env->fpus |= 0x400; /* C2 <-- 1 */ |
3922 |
fptemp = pow(2.0, expdif - 50); |
3923 |
fpsrcop = (ST0 / ST1) / fptemp; |
3924 |
/* fpsrcop = integer obtained by chopping */
|
3925 |
fpsrcop = (fpsrcop < 0.0) ? |
3926 |
-(floor(fabs(fpsrcop))) : floor(fpsrcop); |
3927 |
ST0 -= (ST1 * fpsrcop * fptemp); |
3928 |
} |
3929 |
} |
3930 |
|
3931 |
void helper_fprem(void) |
3932 |
{ |
3933 |
CPU86_LDouble dblq, fpsrcop, fptemp; |
3934 |
CPU86_LDoubleU fpsrcop1, fptemp1; |
3935 |
int expdif;
|
3936 |
signed long long int q; |
3937 |
|
3938 |
if (isinf(ST0) || isnan(ST0) || isnan(ST1) || (ST1 == 0.0)) { |
3939 |
ST0 = 0.0 / 0.0; /* NaN */ |
3940 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
3941 |
return;
|
3942 |
} |
3943 |
|
3944 |
fpsrcop = (CPU86_LDouble)ST0; |
3945 |
fptemp = (CPU86_LDouble)ST1; |
3946 |
fpsrcop1.d = fpsrcop; |
3947 |
fptemp1.d = fptemp; |
3948 |
expdif = EXPD(fpsrcop1) - EXPD(fptemp1); |
3949 |
|
3950 |
if (expdif < 0) { |
3951 |
/* optimisation? taken from the AMD docs */
|
3952 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
3953 |
/* ST0 is unchanged */
|
3954 |
return;
|
3955 |
} |
3956 |
|
3957 |
if ( expdif < 53 ) { |
3958 |
dblq = fpsrcop/*ST0*/ / fptemp/*ST1*/; |
3959 |
/* round dblq towards zero */
|
3960 |
dblq = (dblq < 0.0) ? ceil(dblq) : floor(dblq); |
3961 |
ST0 = fpsrcop/*ST0*/ - fptemp * dblq;
|
3962 |
|
3963 |
/* convert dblq to q by truncating towards zero */
|
3964 |
if (dblq < 0.0) |
3965 |
q = (signed long long int)(-dblq); |
3966 |
else
|
3967 |
q = (signed long long int)dblq; |
3968 |
|
3969 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
3970 |
/* (C0,C3,C1) <-- (q2,q1,q0) */
|
3971 |
env->fpus |= (q & 0x4) << (8 - 2); /* (C0) <-- q2 */ |
3972 |
env->fpus |= (q & 0x2) << (14 - 1); /* (C3) <-- q1 */ |
3973 |
env->fpus |= (q & 0x1) << (9 - 0); /* (C1) <-- q0 */ |
3974 |
} else {
|
3975 |
int N = 32 + (expdif % 32); /* as per AMD docs */ |
3976 |
env->fpus |= 0x400; /* C2 <-- 1 */ |
3977 |
fptemp = pow(2.0, (double)(expdif - N)); |
3978 |
fpsrcop = (ST0 / ST1) / fptemp; |
3979 |
/* fpsrcop = integer obtained by chopping */
|
3980 |
fpsrcop = (fpsrcop < 0.0) ? |
3981 |
-(floor(fabs(fpsrcop))) : floor(fpsrcop); |
3982 |
ST0 -= (ST1 * fpsrcop * fptemp); |
3983 |
} |
3984 |
} |
3985 |
|
3986 |
void helper_fyl2xp1(void) |
3987 |
{ |
3988 |
CPU86_LDouble fptemp; |
3989 |
|
3990 |
fptemp = ST0; |
3991 |
if ((fptemp+1.0)>0.0) { |
3992 |
fptemp = log(fptemp+1.0) / log(2.0); /* log2(ST+1.0) */ |
3993 |
ST1 *= fptemp; |
3994 |
fpop(); |
3995 |
} else {
|
3996 |
env->fpus &= (~0x4700);
|
3997 |
env->fpus |= 0x400;
|
3998 |
} |
3999 |
} |
4000 |
|
4001 |
void helper_fsqrt(void) |
4002 |
{ |
4003 |
CPU86_LDouble fptemp; |
4004 |
|
4005 |
fptemp = ST0; |
4006 |
if (fptemp<0.0) { |
4007 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
4008 |
env->fpus |= 0x400;
|
4009 |
} |
4010 |
ST0 = sqrt(fptemp); |
4011 |
} |
4012 |
|
4013 |
void helper_fsincos(void) |
4014 |
{ |
4015 |
CPU86_LDouble fptemp; |
4016 |
|
4017 |
fptemp = ST0; |
4018 |
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
4019 |
env->fpus |= 0x400;
|
4020 |
} else {
|
4021 |
ST0 = sin(fptemp); |
4022 |
fpush(); |
4023 |
ST0 = cos(fptemp); |
4024 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
4025 |
/* the above code is for |arg| < 2**63 only */
|
4026 |
} |
4027 |
} |
4028 |
|
4029 |
void helper_frndint(void) |
4030 |
{ |
4031 |
ST0 = floatx_round_to_int(ST0, &env->fp_status); |
4032 |
} |
4033 |
|
4034 |
void helper_fscale(void) |
4035 |
{ |
4036 |
ST0 = ldexp (ST0, (int)(ST1));
|
4037 |
} |
4038 |
|
4039 |
void helper_fsin(void) |
4040 |
{ |
4041 |
CPU86_LDouble fptemp; |
4042 |
|
4043 |
fptemp = ST0; |
4044 |
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
4045 |
env->fpus |= 0x400;
|
4046 |
} else {
|
4047 |
ST0 = sin(fptemp); |
4048 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
4049 |
/* the above code is for |arg| < 2**53 only */
|
4050 |
} |
4051 |
} |
4052 |
|
4053 |
void helper_fcos(void) |
4054 |
{ |
4055 |
CPU86_LDouble fptemp; |
4056 |
|
4057 |
fptemp = ST0; |
4058 |
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
4059 |
env->fpus |= 0x400;
|
4060 |
} else {
|
4061 |
ST0 = cos(fptemp); |
4062 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
4063 |
/* the above code is for |arg5 < 2**63 only */
|
4064 |
} |
4065 |
} |
4066 |
|
4067 |
void helper_fxam_ST0(void) |
4068 |
{ |
4069 |
CPU86_LDoubleU temp; |
4070 |
int expdif;
|
4071 |
|
4072 |
temp.d = ST0; |
4073 |
|
4074 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
4075 |
if (SIGND(temp))
|
4076 |
env->fpus |= 0x200; /* C1 <-- 1 */ |
4077 |
|
4078 |
/* XXX: test fptags too */
|
4079 |
expdif = EXPD(temp); |
4080 |
if (expdif == MAXEXPD) {
|
4081 |
#ifdef USE_X86LDOUBLE
|
4082 |
if (MANTD(temp) == 0x8000000000000000ULL) |
4083 |
#else
|
4084 |
if (MANTD(temp) == 0) |
4085 |
#endif
|
4086 |
env->fpus |= 0x500 /*Infinity*/; |
4087 |
else
|
4088 |
env->fpus |= 0x100 /*NaN*/; |
4089 |
} else if (expdif == 0) { |
4090 |
if (MANTD(temp) == 0) |
4091 |
env->fpus |= 0x4000 /*Zero*/; |
4092 |
else
|
4093 |
env->fpus |= 0x4400 /*Denormal*/; |
4094 |
} else {
|
4095 |
env->fpus |= 0x400;
|
4096 |
} |
4097 |
} |
4098 |
|
4099 |
void helper_fstenv(target_ulong ptr, int data32) |
4100 |
{ |
4101 |
int fpus, fptag, exp, i;
|
4102 |
uint64_t mant; |
4103 |
CPU86_LDoubleU tmp; |
4104 |
|
4105 |
fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
4106 |
fptag = 0;
|
4107 |
for (i=7; i>=0; i--) { |
4108 |
fptag <<= 2;
|
4109 |
if (env->fptags[i]) {
|
4110 |
fptag |= 3;
|
4111 |
} else {
|
4112 |
tmp.d = env->fpregs[i].d; |
4113 |
exp = EXPD(tmp); |
4114 |
mant = MANTD(tmp); |
4115 |
if (exp == 0 && mant == 0) { |
4116 |
/* zero */
|
4117 |
fptag |= 1;
|
4118 |
} else if (exp == 0 || exp == MAXEXPD |
4119 |
#ifdef USE_X86LDOUBLE
|
4120 |
|| (mant & (1LL << 63)) == 0 |
4121 |
#endif
|
4122 |
) { |
4123 |
/* NaNs, infinity, denormal */
|
4124 |
fptag |= 2;
|
4125 |
} |
4126 |
} |
4127 |
} |
4128 |
if (data32) {
|
4129 |
/* 32 bit */
|
4130 |
stl(ptr, env->fpuc); |
4131 |
stl(ptr + 4, fpus);
|
4132 |
stl(ptr + 8, fptag);
|
4133 |
stl(ptr + 12, 0); /* fpip */ |
4134 |
stl(ptr + 16, 0); /* fpcs */ |
4135 |
stl(ptr + 20, 0); /* fpoo */ |
4136 |
stl(ptr + 24, 0); /* fpos */ |
4137 |
} else {
|
4138 |
/* 16 bit */
|
4139 |
stw(ptr, env->fpuc); |
4140 |
stw(ptr + 2, fpus);
|
4141 |
stw(ptr + 4, fptag);
|
4142 |
stw(ptr + 6, 0); |
4143 |
stw(ptr + 8, 0); |
4144 |
stw(ptr + 10, 0); |
4145 |
stw(ptr + 12, 0); |
4146 |
} |
4147 |
} |
4148 |
|
4149 |
void helper_fldenv(target_ulong ptr, int data32) |
4150 |
{ |
4151 |
int i, fpus, fptag;
|
4152 |
|
4153 |
if (data32) {
|
4154 |
env->fpuc = lduw(ptr); |
4155 |
fpus = lduw(ptr + 4);
|
4156 |
fptag = lduw(ptr + 8);
|
4157 |
} |
4158 |
else {
|
4159 |
env->fpuc = lduw(ptr); |
4160 |
fpus = lduw(ptr + 2);
|
4161 |
fptag = lduw(ptr + 4);
|
4162 |
} |
4163 |
env->fpstt = (fpus >> 11) & 7; |
4164 |
env->fpus = fpus & ~0x3800;
|
4165 |
for(i = 0;i < 8; i++) { |
4166 |
env->fptags[i] = ((fptag & 3) == 3); |
4167 |
fptag >>= 2;
|
4168 |
} |
4169 |
} |
4170 |
|
4171 |
void helper_fsave(target_ulong ptr, int data32) |
4172 |
{ |
4173 |
CPU86_LDouble tmp; |
4174 |
int i;
|
4175 |
|
4176 |
helper_fstenv(ptr, data32); |
4177 |
|
4178 |
ptr += (14 << data32);
|
4179 |
for(i = 0;i < 8; i++) { |
4180 |
tmp = ST(i); |
4181 |
helper_fstt(tmp, ptr); |
4182 |
ptr += 10;
|
4183 |
} |
4184 |
|
4185 |
/* fninit */
|
4186 |
env->fpus = 0;
|
4187 |
env->fpstt = 0;
|
4188 |
env->fpuc = 0x37f;
|
4189 |
env->fptags[0] = 1; |
4190 |
env->fptags[1] = 1; |
4191 |
env->fptags[2] = 1; |
4192 |
env->fptags[3] = 1; |
4193 |
env->fptags[4] = 1; |
4194 |
env->fptags[5] = 1; |
4195 |
env->fptags[6] = 1; |
4196 |
env->fptags[7] = 1; |
4197 |
} |
4198 |
|
4199 |
void helper_frstor(target_ulong ptr, int data32) |
4200 |
{ |
4201 |
CPU86_LDouble tmp; |
4202 |
int i;
|
4203 |
|
4204 |
helper_fldenv(ptr, data32); |
4205 |
ptr += (14 << data32);
|
4206 |
|
4207 |
for(i = 0;i < 8; i++) { |
4208 |
tmp = helper_fldt(ptr); |
4209 |
ST(i) = tmp; |
4210 |
ptr += 10;
|
4211 |
} |
4212 |
} |
4213 |
|
4214 |
void helper_fxsave(target_ulong ptr, int data64) |
4215 |
{ |
4216 |
int fpus, fptag, i, nb_xmm_regs;
|
4217 |
CPU86_LDouble tmp; |
4218 |
target_ulong addr; |
4219 |
|
4220 |
fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
4221 |
fptag = 0;
|
4222 |
for(i = 0; i < 8; i++) { |
4223 |
fptag |= (env->fptags[i] << i); |
4224 |
} |
4225 |
stw(ptr, env->fpuc); |
4226 |
stw(ptr + 2, fpus);
|
4227 |
stw(ptr + 4, fptag ^ 0xff); |
4228 |
|
4229 |
addr = ptr + 0x20;
|
4230 |
for(i = 0;i < 8; i++) { |
4231 |
tmp = ST(i); |
4232 |
helper_fstt(tmp, addr); |
4233 |
addr += 16;
|
4234 |
} |
4235 |
|
4236 |
if (env->cr[4] & CR4_OSFXSR_MASK) { |
4237 |
/* XXX: finish it */
|
4238 |
stl(ptr + 0x18, env->mxcsr); /* mxcsr */ |
4239 |
stl(ptr + 0x1c, 0x0000ffff); /* mxcsr_mask */ |
4240 |
nb_xmm_regs = 8 << data64;
|
4241 |
addr = ptr + 0xa0;
|
4242 |
for(i = 0; i < nb_xmm_regs; i++) { |
4243 |
stq(addr, env->xmm_regs[i].XMM_Q(0));
|
4244 |
stq(addr + 8, env->xmm_regs[i].XMM_Q(1)); |
4245 |
addr += 16;
|
4246 |
} |
4247 |
} |
4248 |
} |
4249 |
|
4250 |
void helper_fxrstor(target_ulong ptr, int data64) |
4251 |
{ |
4252 |
int i, fpus, fptag, nb_xmm_regs;
|
4253 |
CPU86_LDouble tmp; |
4254 |
target_ulong addr; |
4255 |
|
4256 |
env->fpuc = lduw(ptr); |
4257 |
fpus = lduw(ptr + 2);
|
4258 |
fptag = lduw(ptr + 4);
|
4259 |
env->fpstt = (fpus >> 11) & 7; |
4260 |
env->fpus = fpus & ~0x3800;
|
4261 |
fptag ^= 0xff;
|
4262 |
for(i = 0;i < 8; i++) { |
4263 |
env->fptags[i] = ((fptag >> i) & 1);
|
4264 |
} |
4265 |
|
4266 |
addr = ptr + 0x20;
|
4267 |
for(i = 0;i < 8; i++) { |
4268 |
tmp = helper_fldt(addr); |
4269 |
ST(i) = tmp; |
4270 |
addr += 16;
|
4271 |
} |
4272 |
|
4273 |
if (env->cr[4] & CR4_OSFXSR_MASK) { |
4274 |
/* XXX: finish it */
|
4275 |
env->mxcsr = ldl(ptr + 0x18);
|
4276 |
//ldl(ptr + 0x1c);
|
4277 |
nb_xmm_regs = 8 << data64;
|
4278 |
addr = ptr + 0xa0;
|
4279 |
for(i = 0; i < nb_xmm_regs; i++) { |
4280 |
env->xmm_regs[i].XMM_Q(0) = ldq(addr);
|
4281 |
env->xmm_regs[i].XMM_Q(1) = ldq(addr + 8); |
4282 |
addr += 16;
|
4283 |
} |
4284 |
} |
4285 |
} |
4286 |
|
4287 |
#ifndef USE_X86LDOUBLE
|
4288 |
|
4289 |
void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f)
|
4290 |
{ |
4291 |
CPU86_LDoubleU temp; |
4292 |
int e;
|
4293 |
|
4294 |
temp.d = f; |
4295 |
/* mantissa */
|
4296 |
*pmant = (MANTD(temp) << 11) | (1LL << 63); |
4297 |
/* exponent + sign */
|
4298 |
e = EXPD(temp) - EXPBIAS + 16383;
|
4299 |
e |= SIGND(temp) >> 16;
|
4300 |
*pexp = e; |
4301 |
} |
4302 |
|
4303 |
CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper) |
4304 |
{ |
4305 |
CPU86_LDoubleU temp; |
4306 |
int e;
|
4307 |
uint64_t ll; |
4308 |
|
4309 |
/* XXX: handle overflow ? */
|
4310 |
e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */ |
4311 |
e |= (upper >> 4) & 0x800; /* sign */ |
4312 |
ll = (mant >> 11) & ((1LL << 52) - 1); |
4313 |
#ifdef __arm__
|
4314 |
temp.l.upper = (e << 20) | (ll >> 32); |
4315 |
temp.l.lower = ll; |
4316 |
#else
|
4317 |
temp.ll = ll | ((uint64_t)e << 52);
|
4318 |
#endif
|
4319 |
return temp.d;
|
4320 |
} |
4321 |
|
4322 |
#else
|
4323 |
|
4324 |
void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f)
|
4325 |
{ |
4326 |
CPU86_LDoubleU temp; |
4327 |
|
4328 |
temp.d = f; |
4329 |
*pmant = temp.l.lower; |
4330 |
*pexp = temp.l.upper; |
4331 |
} |
4332 |
|
4333 |
CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper) |
4334 |
{ |
4335 |
CPU86_LDoubleU temp; |
4336 |
|
4337 |
temp.l.upper = upper; |
4338 |
temp.l.lower = mant; |
4339 |
return temp.d;
|
4340 |
} |
4341 |
#endif
|
4342 |
|
4343 |
#ifdef TARGET_X86_64
|
4344 |
|
4345 |
//#define DEBUG_MULDIV
|
4346 |
|
4347 |
static void add128(uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b) |
4348 |
{ |
4349 |
*plow += a; |
4350 |
/* carry test */
|
4351 |
if (*plow < a)
|
4352 |
(*phigh)++; |
4353 |
*phigh += b; |
4354 |
} |
4355 |
|
4356 |
static void neg128(uint64_t *plow, uint64_t *phigh) |
4357 |
{ |
4358 |
*plow = ~ *plow; |
4359 |
*phigh = ~ *phigh; |
4360 |
add128(plow, phigh, 1, 0); |
4361 |
} |
4362 |
|
4363 |
/* return TRUE if overflow */
|
4364 |
static int div64(uint64_t *plow, uint64_t *phigh, uint64_t b) |
4365 |
{ |
4366 |
uint64_t q, r, a1, a0; |
4367 |
int i, qb, ab;
|
4368 |
|
4369 |
a0 = *plow; |
4370 |
a1 = *phigh; |
4371 |
if (a1 == 0) { |
4372 |
q = a0 / b; |
4373 |
r = a0 % b; |
4374 |
*plow = q; |
4375 |
*phigh = r; |
4376 |
} else {
|
4377 |
if (a1 >= b)
|
4378 |
return 1; |
4379 |
/* XXX: use a better algorithm */
|
4380 |
for(i = 0; i < 64; i++) { |
4381 |
ab = a1 >> 63;
|
4382 |
a1 = (a1 << 1) | (a0 >> 63); |
4383 |
if (ab || a1 >= b) {
|
4384 |
a1 -= b; |
4385 |
qb = 1;
|
4386 |
} else {
|
4387 |
qb = 0;
|
4388 |
} |
4389 |
a0 = (a0 << 1) | qb;
|
4390 |
} |
4391 |
#if defined(DEBUG_MULDIV)
|
4392 |
printf("div: 0x%016" PRIx64 "%016" PRIx64 " / 0x%016" PRIx64 ": q=0x%016" PRIx64 " r=0x%016" PRIx64 "\n", |
4393 |
*phigh, *plow, b, a0, a1); |
4394 |
#endif
|
4395 |
*plow = a0; |
4396 |
*phigh = a1; |
4397 |
} |
4398 |
return 0; |
4399 |
} |
4400 |
|
4401 |
/* return TRUE if overflow */
|
4402 |
static int idiv64(uint64_t *plow, uint64_t *phigh, int64_t b) |
4403 |
{ |
4404 |
int sa, sb;
|
4405 |
sa = ((int64_t)*phigh < 0);
|
4406 |
if (sa)
|
4407 |
neg128(plow, phigh); |
4408 |
sb = (b < 0);
|
4409 |
if (sb)
|
4410 |
b = -b; |
4411 |
if (div64(plow, phigh, b) != 0) |
4412 |
return 1; |
4413 |
if (sa ^ sb) {
|
4414 |
if (*plow > (1ULL << 63)) |
4415 |
return 1; |
4416 |
*plow = - *plow; |
4417 |
} else {
|
4418 |
if (*plow >= (1ULL << 63)) |
4419 |
return 1; |
4420 |
} |
4421 |
if (sa)
|
4422 |
*phigh = - *phigh; |
4423 |
return 0; |
4424 |
} |
4425 |
|
4426 |
void helper_mulq_EAX_T0(target_ulong t0)
|
4427 |
{ |
4428 |
uint64_t r0, r1; |
4429 |
|
4430 |
mulu64(&r0, &r1, EAX, t0); |
4431 |
EAX = r0; |
4432 |
EDX = r1; |
4433 |
CC_DST = r0; |
4434 |
CC_SRC = r1; |
4435 |
} |
4436 |
|
4437 |
void helper_imulq_EAX_T0(target_ulong t0)
|
4438 |
{ |
4439 |
uint64_t r0, r1; |
4440 |
|
4441 |
muls64(&r0, &r1, EAX, t0); |
4442 |
EAX = r0; |
4443 |
EDX = r1; |
4444 |
CC_DST = r0; |
4445 |
CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
|
4446 |
} |
4447 |
|
4448 |
target_ulong helper_imulq_T0_T1(target_ulong t0, target_ulong t1) |
4449 |
{ |
4450 |
uint64_t r0, r1; |
4451 |
|
4452 |
muls64(&r0, &r1, t0, t1); |
4453 |
CC_DST = r0; |
4454 |
CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
|
4455 |
return r0;
|
4456 |
} |
4457 |
|
4458 |
void helper_divq_EAX(target_ulong t0)
|
4459 |
{ |
4460 |
uint64_t r0, r1; |
4461 |
if (t0 == 0) { |
4462 |
raise_exception(EXCP00_DIVZ); |
4463 |
} |
4464 |
r0 = EAX; |
4465 |
r1 = EDX; |
4466 |
if (div64(&r0, &r1, t0))
|
4467 |
raise_exception(EXCP00_DIVZ); |
4468 |
EAX = r0; |
4469 |
EDX = r1; |
4470 |
} |
4471 |
|
4472 |
void helper_idivq_EAX(target_ulong t0)
|
4473 |
{ |
4474 |
uint64_t r0, r1; |
4475 |
if (t0 == 0) { |
4476 |
raise_exception(EXCP00_DIVZ); |
4477 |
} |
4478 |
r0 = EAX; |
4479 |
r1 = EDX; |
4480 |
if (idiv64(&r0, &r1, t0))
|
4481 |
raise_exception(EXCP00_DIVZ); |
4482 |
EAX = r0; |
4483 |
EDX = r1; |
4484 |
} |
4485 |
#endif
|
4486 |
|
4487 |
void helper_hlt(void) |
4488 |
{ |
4489 |
env->hflags &= ~HF_INHIBIT_IRQ_MASK; /* needed if sti is just before */
|
4490 |
env->hflags |= HF_HALTED_MASK; |
4491 |
env->exception_index = EXCP_HLT; |
4492 |
cpu_loop_exit(); |
4493 |
} |
4494 |
|
4495 |
void helper_monitor(target_ulong ptr)
|
4496 |
{ |
4497 |
if ((uint32_t)ECX != 0) |
4498 |
raise_exception(EXCP0D_GPF); |
4499 |
/* XXX: store address ? */
|
4500 |
} |
4501 |
|
4502 |
void helper_mwait(void) |
4503 |
{ |
4504 |
if ((uint32_t)ECX != 0) |
4505 |
raise_exception(EXCP0D_GPF); |
4506 |
/* XXX: not complete but not completely erroneous */
|
4507 |
if (env->cpu_index != 0 || env->next_cpu != NULL) { |
4508 |
/* more than one CPU: do not sleep because another CPU may
|
4509 |
wake this one */
|
4510 |
} else {
|
4511 |
helper_hlt(); |
4512 |
} |
4513 |
} |
4514 |
|
4515 |
void helper_debug(void) |
4516 |
{ |
4517 |
env->exception_index = EXCP_DEBUG; |
4518 |
cpu_loop_exit(); |
4519 |
} |
4520 |
|
4521 |
void helper_raise_interrupt(int intno, int next_eip_addend) |
4522 |
{ |
4523 |
raise_interrupt(intno, 1, 0, next_eip_addend); |
4524 |
} |
4525 |
|
4526 |
void helper_raise_exception(int exception_index) |
4527 |
{ |
4528 |
raise_exception(exception_index); |
4529 |
} |
4530 |
|
4531 |
void helper_cli(void) |
4532 |
{ |
4533 |
env->eflags &= ~IF_MASK; |
4534 |
} |
4535 |
|
4536 |
void helper_sti(void) |
4537 |
{ |
4538 |
env->eflags |= IF_MASK; |
4539 |
} |
4540 |
|
4541 |
#if 0
|
4542 |
/* vm86plus instructions */
|
4543 |
void helper_cli_vm(void)
|
4544 |
{
|
4545 |
env->eflags &= ~VIF_MASK;
|
4546 |
}
|
4547 |
|
4548 |
void helper_sti_vm(void)
|
4549 |
{
|
4550 |
env->eflags |= VIF_MASK;
|
4551 |
if (env->eflags & VIP_MASK) {
|
4552 |
raise_exception(EXCP0D_GPF);
|
4553 |
}
|
4554 |
}
|
4555 |
#endif
|
4556 |
|
4557 |
void helper_set_inhibit_irq(void) |
4558 |
{ |
4559 |
env->hflags |= HF_INHIBIT_IRQ_MASK; |
4560 |
} |
4561 |
|
4562 |
void helper_reset_inhibit_irq(void) |
4563 |
{ |
4564 |
env->hflags &= ~HF_INHIBIT_IRQ_MASK; |
4565 |
} |
4566 |
|
4567 |
void helper_boundw(target_ulong a0, int v) |
4568 |
{ |
4569 |
int low, high;
|
4570 |
low = ldsw(a0); |
4571 |
high = ldsw(a0 + 2);
|
4572 |
v = (int16_t)v; |
4573 |
if (v < low || v > high) {
|
4574 |
raise_exception(EXCP05_BOUND); |
4575 |
} |
4576 |
FORCE_RET(); |
4577 |
} |
4578 |
|
4579 |
void helper_boundl(target_ulong a0, int v) |
4580 |
{ |
4581 |
int low, high;
|
4582 |
low = ldl(a0); |
4583 |
high = ldl(a0 + 4);
|
4584 |
if (v < low || v > high) {
|
4585 |
raise_exception(EXCP05_BOUND); |
4586 |
} |
4587 |
FORCE_RET(); |
4588 |
} |
4589 |
|
4590 |
static float approx_rsqrt(float a) |
4591 |
{ |
4592 |
return 1.0 / sqrt(a); |
4593 |
} |
4594 |
|
4595 |
static float approx_rcp(float a) |
4596 |
{ |
4597 |
return 1.0 / a; |
4598 |
} |
4599 |
|
4600 |
#if !defined(CONFIG_USER_ONLY)
|
4601 |
|
4602 |
#define MMUSUFFIX _mmu
|
4603 |
#ifdef __s390__
|
4604 |
# define GETPC() ((void*)((unsigned long)__builtin_return_address(0) & 0x7fffffffUL)) |
4605 |
#else
|
4606 |
# define GETPC() (__builtin_return_address(0)) |
4607 |
#endif
|
4608 |
|
4609 |
#define SHIFT 0 |
4610 |
#include "softmmu_template.h" |
4611 |
|
4612 |
#define SHIFT 1 |
4613 |
#include "softmmu_template.h" |
4614 |
|
4615 |
#define SHIFT 2 |
4616 |
#include "softmmu_template.h" |
4617 |
|
4618 |
#define SHIFT 3 |
4619 |
#include "softmmu_template.h" |
4620 |
|
4621 |
#endif
|
4622 |
|
4623 |
/* try to fill the TLB and return an exception if error. If retaddr is
|
4624 |
NULL, it means that the function was called in C code (i.e. not
|
4625 |
from generated code or from helper.c) */
|
4626 |
/* XXX: fix it to restore all registers */
|
4627 |
void tlb_fill(target_ulong addr, int is_write, int mmu_idx, void *retaddr) |
4628 |
{ |
4629 |
TranslationBlock *tb; |
4630 |
int ret;
|
4631 |
unsigned long pc; |
4632 |
CPUX86State *saved_env; |
4633 |
|
4634 |
/* XXX: hack to restore env in all cases, even if not called from
|
4635 |
generated code */
|
4636 |
saved_env = env; |
4637 |
env = cpu_single_env; |
4638 |
|
4639 |
ret = cpu_x86_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
|
4640 |
if (ret) {
|
4641 |
if (retaddr) {
|
4642 |
/* now we have a real cpu fault */
|
4643 |
pc = (unsigned long)retaddr; |
4644 |
tb = tb_find_pc(pc); |
4645 |
if (tb) {
|
4646 |
/* the PC is inside the translated code. It means that we have
|
4647 |
a virtual CPU fault */
|
4648 |
cpu_restore_state(tb, env, pc, NULL);
|
4649 |
} |
4650 |
} |
4651 |
if (retaddr)
|
4652 |
raise_exception_err(env->exception_index, env->error_code); |
4653 |
else
|
4654 |
raise_exception_err_norestore(env->exception_index, env->error_code); |
4655 |
} |
4656 |
env = saved_env; |
4657 |
} |
4658 |
|
4659 |
|
4660 |
/* Secure Virtual Machine helpers */
|
4661 |
|
4662 |
void helper_stgi(void) |
4663 |
{ |
4664 |
env->hflags |= HF_GIF_MASK; |
4665 |
} |
4666 |
|
4667 |
void helper_clgi(void) |
4668 |
{ |
4669 |
env->hflags &= ~HF_GIF_MASK; |
4670 |
} |
4671 |
|
4672 |
#if defined(CONFIG_USER_ONLY)
|
4673 |
|
4674 |
void helper_vmrun(void) |
4675 |
{ |
4676 |
} |
4677 |
void helper_vmmcall(void) |
4678 |
{ |
4679 |
} |
4680 |
void helper_vmload(void) |
4681 |
{ |
4682 |
} |
4683 |
void helper_vmsave(void) |
4684 |
{ |
4685 |
} |
4686 |
void helper_skinit(void) |
4687 |
{ |
4688 |
} |
4689 |
void helper_invlpga(void) |
4690 |
{ |
4691 |
} |
4692 |
void helper_vmexit(uint32_t exit_code, uint64_t exit_info_1)
|
4693 |
{ |
4694 |
} |
4695 |
void helper_svm_check_intercept_param(uint32_t type, uint64_t param)
|
4696 |
{ |
4697 |
} |
4698 |
|
4699 |
void helper_svm_check_io(uint32_t port, uint32_t param,
|
4700 |
uint32_t next_eip_addend) |
4701 |
{ |
4702 |
} |
4703 |
#else
|
4704 |
|
4705 |
static inline uint32_t |
4706 |
vmcb2cpu_attrib(uint16_t vmcb_attrib, uint32_t vmcb_base, uint32_t vmcb_limit) |
4707 |
{ |
4708 |
return ((vmcb_attrib & 0x00ff) << 8) /* Type, S, DPL, P */ |
4709 |
| ((vmcb_attrib & 0x0f00) << 12) /* AVL, L, DB, G */ |
4710 |
| ((vmcb_base >> 16) & 0xff) /* Base 23-16 */ |
4711 |
| (vmcb_base & 0xff000000) /* Base 31-24 */ |
4712 |
| (vmcb_limit & 0xf0000); /* Limit 19-16 */ |
4713 |
} |
4714 |
|
4715 |
static inline uint16_t cpu2vmcb_attrib(uint32_t cpu_attrib) |
4716 |
{ |
4717 |
return ((cpu_attrib >> 8) & 0xff) /* Type, S, DPL, P */ |
4718 |
| ((cpu_attrib & 0xf00000) >> 12); /* AVL, L, DB, G */ |
4719 |
} |
4720 |
|
4721 |
void helper_vmrun(void) |
4722 |
{ |
4723 |
target_ulong addr; |
4724 |
uint32_t event_inj; |
4725 |
uint32_t int_ctl; |
4726 |
|
4727 |
addr = EAX; |
4728 |
if (loglevel & CPU_LOG_TB_IN_ASM)
|
4729 |
fprintf(logfile,"vmrun! " TARGET_FMT_lx "\n", addr); |
4730 |
|
4731 |
env->vm_vmcb = addr; |
4732 |
|
4733 |
/* save the current CPU state in the hsave page */
|
4734 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.base), env->gdt.base);
|
4735 |
stl_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.limit), env->gdt.limit);
|
4736 |
|
4737 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.base), env->idt.base);
|
4738 |
stl_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.limit), env->idt.limit);
|
4739 |
|
4740 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr0), env->cr[0]); |
4741 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr2), env->cr[2]); |
4742 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr3), env->cr[3]); |
4743 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr4), env->cr[4]); |
4744 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr8), env->cr[8]); |
4745 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr6), env->dr[6]); |
4746 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr7), env->dr[7]); |
4747 |
|
4748 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.efer), env->efer);
|
4749 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rflags), compute_eflags());
|
4750 |
|
4751 |
SVM_SAVE_SEG(env->vm_hsave, segs[R_ES], es); |
4752 |
SVM_SAVE_SEG(env->vm_hsave, segs[R_CS], cs); |
4753 |
SVM_SAVE_SEG(env->vm_hsave, segs[R_SS], ss); |
4754 |
SVM_SAVE_SEG(env->vm_hsave, segs[R_DS], ds); |
4755 |
|
4756 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rip), EIP);
|
4757 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rsp), ESP);
|
4758 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rax), EAX);
|
4759 |
|
4760 |
/* load the interception bitmaps so we do not need to access the
|
4761 |
vmcb in svm mode */
|
4762 |
/* We shift all the intercept bits so we can OR them with the TB
|
4763 |
flags later on */
|
4764 |
env->intercept = (ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept)) << INTERCEPT_INTR) | INTERCEPT_SVM_MASK;
|
4765 |
env->intercept_cr_read = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_cr_read));
|
4766 |
env->intercept_cr_write = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_cr_write));
|
4767 |
env->intercept_dr_read = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_dr_read));
|
4768 |
env->intercept_dr_write = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_dr_write));
|
4769 |
env->intercept_exceptions = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_exceptions));
|
4770 |
|
4771 |
env->gdt.base = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.base));
|
4772 |
env->gdt.limit = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.limit));
|
4773 |
|
4774 |
env->idt.base = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.base));
|
4775 |
env->idt.limit = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.limit));
|
4776 |
|
4777 |
/* clear exit_info_2 so we behave like the real hardware */
|
4778 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2), 0); |
4779 |
|
4780 |
cpu_x86_update_cr0(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr0)));
|
4781 |
cpu_x86_update_cr4(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr4)));
|
4782 |
cpu_x86_update_cr3(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr3)));
|
4783 |
env->cr[2] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr2)); |
4784 |
int_ctl = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl));
|
4785 |
if (int_ctl & V_INTR_MASKING_MASK) {
|
4786 |
env->cr[8] = int_ctl & V_TPR_MASK;
|
4787 |
cpu_set_apic_tpr(env, env->cr[8]);
|
4788 |
if (env->eflags & IF_MASK)
|
4789 |
env->hflags |= HF_HIF_MASK; |
4790 |
} |
4791 |
|
4792 |
#ifdef TARGET_X86_64
|
4793 |
env->efer = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.efer));
|
4794 |
env->hflags &= ~HF_LMA_MASK; |
4795 |
if (env->efer & MSR_EFER_LMA)
|
4796 |
env->hflags |= HF_LMA_MASK; |
4797 |
#endif
|
4798 |
env->eflags = 0;
|
4799 |
load_eflags(ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rflags)),
|
4800 |
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)); |
4801 |
CC_OP = CC_OP_EFLAGS; |
4802 |
CC_DST = 0xffffffff;
|
4803 |
|
4804 |
SVM_LOAD_SEG(env->vm_vmcb, ES, es); |
4805 |
SVM_LOAD_SEG(env->vm_vmcb, CS, cs); |
4806 |
SVM_LOAD_SEG(env->vm_vmcb, SS, ss); |
4807 |
SVM_LOAD_SEG(env->vm_vmcb, DS, ds); |
4808 |
|
4809 |
EIP = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rip));
|
4810 |
env->eip = EIP; |
4811 |
ESP = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rsp));
|
4812 |
EAX = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rax));
|
4813 |
env->dr[7] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr7)); |
4814 |
env->dr[6] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr6)); |
4815 |
cpu_x86_set_cpl(env, ldub_phys(env->vm_vmcb + offsetof(struct vmcb, save.cpl)));
|
4816 |
|
4817 |
/* FIXME: guest state consistency checks */
|
4818 |
|
4819 |
switch(ldub_phys(env->vm_vmcb + offsetof(struct vmcb, control.tlb_ctl))) { |
4820 |
case TLB_CONTROL_DO_NOTHING:
|
4821 |
break;
|
4822 |
case TLB_CONTROL_FLUSH_ALL_ASID:
|
4823 |
/* FIXME: this is not 100% correct but should work for now */
|
4824 |
tlb_flush(env, 1);
|
4825 |
break;
|
4826 |
} |
4827 |
|
4828 |
helper_stgi(); |
4829 |
|
4830 |
/* maybe we need to inject an event */
|
4831 |
event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
|
4832 |
if (event_inj & SVM_EVTINJ_VALID) {
|
4833 |
uint8_t vector = event_inj & SVM_EVTINJ_VEC_MASK; |
4834 |
uint16_t valid_err = event_inj & SVM_EVTINJ_VALID_ERR; |
4835 |
uint32_t event_inj_err = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj_err));
|
4836 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj), event_inj & ~SVM_EVTINJ_VALID);
|
4837 |
|
4838 |
if (loglevel & CPU_LOG_TB_IN_ASM)
|
4839 |
fprintf(logfile, "Injecting(%#hx): ", valid_err);
|
4840 |
/* FIXME: need to implement valid_err */
|
4841 |
switch (event_inj & SVM_EVTINJ_TYPE_MASK) {
|
4842 |
case SVM_EVTINJ_TYPE_INTR:
|
4843 |
env->exception_index = vector; |
4844 |
env->error_code = event_inj_err; |
4845 |
env->exception_is_int = 0;
|
4846 |
env->exception_next_eip = -1;
|
4847 |
if (loglevel & CPU_LOG_TB_IN_ASM)
|
4848 |
fprintf(logfile, "INTR");
|
4849 |
break;
|
4850 |
case SVM_EVTINJ_TYPE_NMI:
|
4851 |
env->exception_index = vector; |
4852 |
env->error_code = event_inj_err; |
4853 |
env->exception_is_int = 0;
|
4854 |
env->exception_next_eip = EIP; |
4855 |
if (loglevel & CPU_LOG_TB_IN_ASM)
|
4856 |
fprintf(logfile, "NMI");
|
4857 |
break;
|
4858 |
case SVM_EVTINJ_TYPE_EXEPT:
|
4859 |
env->exception_index = vector; |
4860 |
env->error_code = event_inj_err; |
4861 |
env->exception_is_int = 0;
|
4862 |
env->exception_next_eip = -1;
|
4863 |
if (loglevel & CPU_LOG_TB_IN_ASM)
|
4864 |
fprintf(logfile, "EXEPT");
|
4865 |
break;
|
4866 |
case SVM_EVTINJ_TYPE_SOFT:
|
4867 |
env->exception_index = vector; |
4868 |
env->error_code = event_inj_err; |
4869 |
env->exception_is_int = 1;
|
4870 |
env->exception_next_eip = EIP; |
4871 |
if (loglevel & CPU_LOG_TB_IN_ASM)
|
4872 |
fprintf(logfile, "SOFT");
|
4873 |
break;
|
4874 |
} |
4875 |
if (loglevel & CPU_LOG_TB_IN_ASM)
|
4876 |
fprintf(logfile, " %#x %#x\n", env->exception_index, env->error_code);
|
4877 |
} |
4878 |
if ((int_ctl & V_IRQ_MASK) || (env->intercept & INTERCEPT_VINTR)) {
|
4879 |
env->interrupt_request |= CPU_INTERRUPT_VIRQ; |
4880 |
} |
4881 |
|
4882 |
cpu_loop_exit(); |
4883 |
} |
4884 |
|
4885 |
void helper_vmmcall(void) |
4886 |
{ |
4887 |
if (loglevel & CPU_LOG_TB_IN_ASM)
|
4888 |
fprintf(logfile,"vmmcall!\n");
|
4889 |
} |
4890 |
|
4891 |
void helper_vmload(void) |
4892 |
{ |
4893 |
target_ulong addr; |
4894 |
addr = EAX; |
4895 |
if (loglevel & CPU_LOG_TB_IN_ASM)
|
4896 |
fprintf(logfile,"vmload! " TARGET_FMT_lx "\nFS: %016" PRIx64 " | " TARGET_FMT_lx "\n", |
4897 |
addr, ldq_phys(addr + offsetof(struct vmcb, save.fs.base)),
|
4898 |
env->segs[R_FS].base); |
4899 |
|
4900 |
SVM_LOAD_SEG2(addr, segs[R_FS], fs); |
4901 |
SVM_LOAD_SEG2(addr, segs[R_GS], gs); |
4902 |
SVM_LOAD_SEG2(addr, tr, tr); |
4903 |
SVM_LOAD_SEG2(addr, ldt, ldtr); |
4904 |
|
4905 |
#ifdef TARGET_X86_64
|
4906 |
env->kernelgsbase = ldq_phys(addr + offsetof(struct vmcb, save.kernel_gs_base));
|
4907 |
env->lstar = ldq_phys(addr + offsetof(struct vmcb, save.lstar));
|
4908 |
env->cstar = ldq_phys(addr + offsetof(struct vmcb, save.cstar));
|
4909 |
env->fmask = ldq_phys(addr + offsetof(struct vmcb, save.sfmask));
|
4910 |
#endif
|
4911 |
env->star = ldq_phys(addr + offsetof(struct vmcb, save.star));
|
4912 |
env->sysenter_cs = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_cs));
|
4913 |
env->sysenter_esp = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_esp));
|
4914 |
env->sysenter_eip = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_eip));
|
4915 |
} |
4916 |
|
4917 |
void helper_vmsave(void) |
4918 |
{ |
4919 |
target_ulong addr; |
4920 |
addr = EAX; |
4921 |
if (loglevel & CPU_LOG_TB_IN_ASM)
|
4922 |
fprintf(logfile,"vmsave! " TARGET_FMT_lx "\nFS: %016" PRIx64 " | " TARGET_FMT_lx "\n", |
4923 |
addr, ldq_phys(addr + offsetof(struct vmcb, save.fs.base)),
|
4924 |
env->segs[R_FS].base); |
4925 |
|
4926 |
SVM_SAVE_SEG(addr, segs[R_FS], fs); |
4927 |
SVM_SAVE_SEG(addr, segs[R_GS], gs); |
4928 |
SVM_SAVE_SEG(addr, tr, tr); |
4929 |
SVM_SAVE_SEG(addr, ldt, ldtr); |
4930 |
|
4931 |
#ifdef TARGET_X86_64
|
4932 |
stq_phys(addr + offsetof(struct vmcb, save.kernel_gs_base), env->kernelgsbase);
|
4933 |
stq_phys(addr + offsetof(struct vmcb, save.lstar), env->lstar);
|
4934 |
stq_phys(addr + offsetof(struct vmcb, save.cstar), env->cstar);
|
4935 |
stq_phys(addr + offsetof(struct vmcb, save.sfmask), env->fmask);
|
4936 |
#endif
|
4937 |
stq_phys(addr + offsetof(struct vmcb, save.star), env->star);
|
4938 |
stq_phys(addr + offsetof(struct vmcb, save.sysenter_cs), env->sysenter_cs);
|
4939 |
stq_phys(addr + offsetof(struct vmcb, save.sysenter_esp), env->sysenter_esp);
|
4940 |
stq_phys(addr + offsetof(struct vmcb, save.sysenter_eip), env->sysenter_eip);
|
4941 |
} |
4942 |
|
4943 |
void helper_skinit(void) |
4944 |
{ |
4945 |
if (loglevel & CPU_LOG_TB_IN_ASM)
|
4946 |
fprintf(logfile,"skinit!\n");
|
4947 |
} |
4948 |
|
4949 |
void helper_invlpga(void) |
4950 |
{ |
4951 |
tlb_flush(env, 0);
|
4952 |
} |
4953 |
|
4954 |
void helper_svm_check_intercept_param(uint32_t type, uint64_t param)
|
4955 |
{ |
4956 |
switch(type) {
|
4957 |
case SVM_EXIT_READ_CR0 ... SVM_EXIT_READ_CR0 + 8: |
4958 |
if (INTERCEPTEDw(_cr_read, (1 << (type - SVM_EXIT_READ_CR0)))) { |
4959 |
helper_vmexit(type, param); |
4960 |
} |
4961 |
break;
|
4962 |
case SVM_EXIT_READ_DR0 ... SVM_EXIT_READ_DR0 + 8: |
4963 |
if (INTERCEPTEDw(_dr_read, (1 << (type - SVM_EXIT_READ_DR0)))) { |
4964 |
helper_vmexit(type, param); |
4965 |
} |
4966 |
break;
|
4967 |
case SVM_EXIT_WRITE_CR0 ... SVM_EXIT_WRITE_CR0 + 8: |
4968 |
if (INTERCEPTEDw(_cr_write, (1 << (type - SVM_EXIT_WRITE_CR0)))) { |
4969 |
helper_vmexit(type, param); |
4970 |
} |
4971 |
break;
|
4972 |
case SVM_EXIT_WRITE_DR0 ... SVM_EXIT_WRITE_DR0 + 8: |
4973 |
if (INTERCEPTEDw(_dr_write, (1 << (type - SVM_EXIT_WRITE_DR0)))) { |
4974 |
helper_vmexit(type, param); |
4975 |
} |
4976 |
break;
|
4977 |
case SVM_EXIT_EXCP_BASE ... SVM_EXIT_EXCP_BASE + 16: |
4978 |
if (INTERCEPTEDl(_exceptions, (1 << (type - SVM_EXIT_EXCP_BASE)))) { |
4979 |
helper_vmexit(type, param); |
4980 |
} |
4981 |
break;
|
4982 |
case SVM_EXIT_IOIO:
|
4983 |
break;
|
4984 |
|
4985 |
case SVM_EXIT_MSR:
|
4986 |
if (INTERCEPTED(1ULL << INTERCEPT_MSR_PROT)) { |
4987 |
/* FIXME: this should be read in at vmrun (faster this way?) */
|
4988 |
uint64_t addr = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.msrpm_base_pa));
|
4989 |
uint32_t t0, t1; |
4990 |
switch((uint32_t)ECX) {
|
4991 |
case 0 ... 0x1fff: |
4992 |
t0 = (ECX * 2) % 8; |
4993 |
t1 = ECX / 8;
|
4994 |
break;
|
4995 |
case 0xc0000000 ... 0xc0001fff: |
4996 |
t0 = (8192 + ECX - 0xc0000000) * 2; |
4997 |
t1 = (t0 / 8);
|
4998 |
t0 %= 8;
|
4999 |
break;
|
5000 |
case 0xc0010000 ... 0xc0011fff: |
5001 |
t0 = (16384 + ECX - 0xc0010000) * 2; |
5002 |
t1 = (t0 / 8);
|
5003 |
t0 %= 8;
|
5004 |
break;
|
5005 |
default:
|
5006 |
helper_vmexit(type, param); |
5007 |
t0 = 0;
|
5008 |
t1 = 0;
|
5009 |
break;
|
5010 |
} |
5011 |
if (ldub_phys(addr + t1) & ((1 << param) << t0)) |
5012 |
helper_vmexit(type, param); |
5013 |
} |
5014 |
break;
|
5015 |
default:
|
5016 |
if (INTERCEPTED((1ULL << ((type - SVM_EXIT_INTR) + INTERCEPT_INTR)))) { |
5017 |
helper_vmexit(type, param); |
5018 |
} |
5019 |
break;
|
5020 |
} |
5021 |
} |
5022 |
|
5023 |
void helper_svm_check_io(uint32_t port, uint32_t param,
|
5024 |
uint32_t next_eip_addend) |
5025 |
{ |
5026 |
if (INTERCEPTED(1ULL << INTERCEPT_IOIO_PROT)) { |
5027 |
/* FIXME: this should be read in at vmrun (faster this way?) */
|
5028 |
uint64_t addr = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.iopm_base_pa));
|
5029 |
uint16_t mask = (1 << ((param >> 4) & 7)) - 1; |
5030 |
if(lduw_phys(addr + port / 8) & (mask << (port & 7))) { |
5031 |
/* next EIP */
|
5032 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
|
5033 |
env->eip + next_eip_addend); |
5034 |
helper_vmexit(SVM_EXIT_IOIO, param | (port << 16));
|
5035 |
} |
5036 |
} |
5037 |
} |
5038 |
|
5039 |
/* Note: currently only 32 bits of exit_code are used */
|
5040 |
void helper_vmexit(uint32_t exit_code, uint64_t exit_info_1)
|
5041 |
{ |
5042 |
uint32_t int_ctl; |
5043 |
|
5044 |
if (loglevel & CPU_LOG_TB_IN_ASM)
|
5045 |
fprintf(logfile,"vmexit(%08x, %016" PRIx64 ", %016" PRIx64 ", " TARGET_FMT_lx ")!\n", |
5046 |
exit_code, exit_info_1, |
5047 |
ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2)),
|
5048 |
EIP); |
5049 |
|
5050 |
if(env->hflags & HF_INHIBIT_IRQ_MASK) {
|
5051 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_state), SVM_INTERRUPT_SHADOW_MASK);
|
5052 |
env->hflags &= ~HF_INHIBIT_IRQ_MASK; |
5053 |
} else {
|
5054 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_state), 0); |
5055 |
} |
5056 |
|
5057 |
/* Save the VM state in the vmcb */
|
5058 |
SVM_SAVE_SEG(env->vm_vmcb, segs[R_ES], es); |
5059 |
SVM_SAVE_SEG(env->vm_vmcb, segs[R_CS], cs); |
5060 |
SVM_SAVE_SEG(env->vm_vmcb, segs[R_SS], ss); |
5061 |
SVM_SAVE_SEG(env->vm_vmcb, segs[R_DS], ds); |
5062 |
|
5063 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.base), env->gdt.base);
|
5064 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.limit), env->gdt.limit);
|
5065 |
|
5066 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.base), env->idt.base);
|
5067 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.limit), env->idt.limit);
|
5068 |
|
5069 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.efer), env->efer);
|
5070 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr0), env->cr[0]); |
5071 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr2), env->cr[2]); |
5072 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr3), env->cr[3]); |
5073 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr4), env->cr[4]); |
5074 |
|
5075 |
if ((int_ctl = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl))) & V_INTR_MASKING_MASK) { |
5076 |
int_ctl &= ~V_TPR_MASK; |
5077 |
int_ctl |= env->cr[8] & V_TPR_MASK;
|
5078 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl), int_ctl);
|
5079 |
} |
5080 |
|
5081 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rflags), compute_eflags());
|
5082 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rip), env->eip);
|
5083 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rsp), ESP);
|
5084 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rax), EAX);
|
5085 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr7), env->dr[7]); |
5086 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr6), env->dr[6]); |
5087 |
stb_phys(env->vm_vmcb + offsetof(struct vmcb, save.cpl), env->hflags & HF_CPL_MASK);
|
5088 |
|
5089 |
/* Reload the host state from vm_hsave */
|
5090 |
env->hflags &= ~HF_HIF_MASK; |
5091 |
env->intercept = 0;
|
5092 |
env->intercept_exceptions = 0;
|
5093 |
env->interrupt_request &= ~CPU_INTERRUPT_VIRQ; |
5094 |
|
5095 |
env->gdt.base = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.base));
|
5096 |
env->gdt.limit = ldl_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.limit));
|
5097 |
|
5098 |
env->idt.base = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.base));
|
5099 |
env->idt.limit = ldl_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.limit));
|
5100 |
|
5101 |
cpu_x86_update_cr0(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr0)) | CR0_PE_MASK);
|
5102 |
cpu_x86_update_cr4(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr4)));
|
5103 |
cpu_x86_update_cr3(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr3)));
|
5104 |
if (int_ctl & V_INTR_MASKING_MASK) {
|
5105 |
env->cr[8] = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr8)); |
5106 |
cpu_set_apic_tpr(env, env->cr[8]);
|
5107 |
} |
5108 |
/* we need to set the efer after the crs so the hidden flags get set properly */
|
5109 |
#ifdef TARGET_X86_64
|
5110 |
env->efer = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.efer));
|
5111 |
env->hflags &= ~HF_LMA_MASK; |
5112 |
if (env->efer & MSR_EFER_LMA)
|
5113 |
env->hflags |= HF_LMA_MASK; |
5114 |
#endif
|
5115 |
|
5116 |
env->eflags = 0;
|
5117 |
load_eflags(ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rflags)),
|
5118 |
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)); |
5119 |
CC_OP = CC_OP_EFLAGS; |
5120 |
|
5121 |
SVM_LOAD_SEG(env->vm_hsave, ES, es); |
5122 |
SVM_LOAD_SEG(env->vm_hsave, CS, cs); |
5123 |
SVM_LOAD_SEG(env->vm_hsave, SS, ss); |
5124 |
SVM_LOAD_SEG(env->vm_hsave, DS, ds); |
5125 |
|
5126 |
EIP = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rip));
|
5127 |
ESP = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rsp));
|
5128 |
EAX = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rax));
|
5129 |
|
5130 |
env->dr[6] = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr6)); |
5131 |
env->dr[7] = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr7)); |
5132 |
|
5133 |
/* other setups */
|
5134 |
cpu_x86_set_cpl(env, 0);
|
5135 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_code), exit_code);
|
5136 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_1), exit_info_1);
|
5137 |
|
5138 |
helper_clgi(); |
5139 |
/* FIXME: Resets the current ASID register to zero (host ASID). */
|
5140 |
|
5141 |
/* Clears the V_IRQ and V_INTR_MASKING bits inside the processor. */
|
5142 |
|
5143 |
/* Clears the TSC_OFFSET inside the processor. */
|
5144 |
|
5145 |
/* If the host is in PAE mode, the processor reloads the host's PDPEs
|
5146 |
from the page table indicated the host's CR3. If the PDPEs contain
|
5147 |
illegal state, the processor causes a shutdown. */
|
5148 |
|
5149 |
/* Forces CR0.PE = 1, RFLAGS.VM = 0. */
|
5150 |
env->cr[0] |= CR0_PE_MASK;
|
5151 |
env->eflags &= ~VM_MASK; |
5152 |
|
5153 |
/* Disables all breakpoints in the host DR7 register. */
|
5154 |
|
5155 |
/* Checks the reloaded host state for consistency. */
|
5156 |
|
5157 |
/* If the host's rIP reloaded by #VMEXIT is outside the limit of the
|
5158 |
host's code segment or non-canonical (in the case of long mode), a
|
5159 |
#GP fault is delivered inside the host.) */
|
5160 |
|
5161 |
/* remove any pending exception */
|
5162 |
env->exception_index = -1;
|
5163 |
env->error_code = 0;
|
5164 |
env->old_exception = -1;
|
5165 |
|
5166 |
cpu_loop_exit(); |
5167 |
} |
5168 |
|
5169 |
#endif
|
5170 |
|
5171 |
/* MMX/SSE */
|
5172 |
/* XXX: optimize by storing fptt and fptags in the static cpu state */
|
5173 |
void helper_enter_mmx(void) |
5174 |
{ |
5175 |
env->fpstt = 0;
|
5176 |
*(uint32_t *)(env->fptags) = 0;
|
5177 |
*(uint32_t *)(env->fptags + 4) = 0; |
5178 |
} |
5179 |
|
5180 |
void helper_emms(void) |
5181 |
{ |
5182 |
/* set to empty state */
|
5183 |
*(uint32_t *)(env->fptags) = 0x01010101;
|
5184 |
*(uint32_t *)(env->fptags + 4) = 0x01010101; |
5185 |
} |
5186 |
|
5187 |
/* XXX: suppress */
|
5188 |
void helper_movq(uint64_t *d, uint64_t *s)
|
5189 |
{ |
5190 |
*d = *s; |
5191 |
} |
5192 |
|
5193 |
#define SHIFT 0 |
5194 |
#include "ops_sse.h" |
5195 |
|
5196 |
#define SHIFT 1 |
5197 |
#include "ops_sse.h" |
5198 |
|
5199 |
#define SHIFT 0 |
5200 |
#include "helper_template.h" |
5201 |
#undef SHIFT
|
5202 |
|
5203 |
#define SHIFT 1 |
5204 |
#include "helper_template.h" |
5205 |
#undef SHIFT
|
5206 |
|
5207 |
#define SHIFT 2 |
5208 |
#include "helper_template.h" |
5209 |
#undef SHIFT
|
5210 |
|
5211 |
#ifdef TARGET_X86_64
|
5212 |
|
5213 |
#define SHIFT 3 |
5214 |
#include "helper_template.h" |
5215 |
#undef SHIFT
|
5216 |
|
5217 |
#endif
|
5218 |
|
5219 |
/* bit operations */
|
5220 |
target_ulong helper_bsf(target_ulong t0) |
5221 |
{ |
5222 |
int count;
|
5223 |
target_ulong res; |
5224 |
|
5225 |
res = t0; |
5226 |
count = 0;
|
5227 |
while ((res & 1) == 0) { |
5228 |
count++; |
5229 |
res >>= 1;
|
5230 |
} |
5231 |
return count;
|
5232 |
} |
5233 |
|
5234 |
target_ulong helper_bsr(target_ulong t0) |
5235 |
{ |
5236 |
int count;
|
5237 |
target_ulong res, mask; |
5238 |
|
5239 |
res = t0; |
5240 |
count = TARGET_LONG_BITS - 1;
|
5241 |
mask = (target_ulong)1 << (TARGET_LONG_BITS - 1); |
5242 |
while ((res & mask) == 0) { |
5243 |
count--; |
5244 |
res <<= 1;
|
5245 |
} |
5246 |
return count;
|
5247 |
} |
5248 |
|
5249 |
|
5250 |
static int compute_all_eflags(void) |
5251 |
{ |
5252 |
return CC_SRC;
|
5253 |
} |
5254 |
|
5255 |
static int compute_c_eflags(void) |
5256 |
{ |
5257 |
return CC_SRC & CC_C;
|
5258 |
} |
5259 |
|
5260 |
CCTable cc_table[CC_OP_NB] = { |
5261 |
[CC_OP_DYNAMIC] = { /* should never happen */ },
|
5262 |
|
5263 |
[CC_OP_EFLAGS] = { compute_all_eflags, compute_c_eflags }, |
5264 |
|
5265 |
[CC_OP_MULB] = { compute_all_mulb, compute_c_mull }, |
5266 |
[CC_OP_MULW] = { compute_all_mulw, compute_c_mull }, |
5267 |
[CC_OP_MULL] = { compute_all_mull, compute_c_mull }, |
5268 |
|
5269 |
[CC_OP_ADDB] = { compute_all_addb, compute_c_addb }, |
5270 |
[CC_OP_ADDW] = { compute_all_addw, compute_c_addw }, |
5271 |
[CC_OP_ADDL] = { compute_all_addl, compute_c_addl }, |
5272 |
|
5273 |
[CC_OP_ADCB] = { compute_all_adcb, compute_c_adcb }, |
5274 |
[CC_OP_ADCW] = { compute_all_adcw, compute_c_adcw }, |
5275 |
[CC_OP_ADCL] = { compute_all_adcl, compute_c_adcl }, |
5276 |
|
5277 |
[CC_OP_SUBB] = { compute_all_subb, compute_c_subb }, |
5278 |
[CC_OP_SUBW] = { compute_all_subw, compute_c_subw }, |
5279 |
[CC_OP_SUBL] = { compute_all_subl, compute_c_subl }, |
5280 |
|
5281 |
[CC_OP_SBBB] = { compute_all_sbbb, compute_c_sbbb }, |
5282 |
[CC_OP_SBBW] = { compute_all_sbbw, compute_c_sbbw }, |
5283 |
[CC_OP_SBBL] = { compute_all_sbbl, compute_c_sbbl }, |
5284 |
|
5285 |
[CC_OP_LOGICB] = { compute_all_logicb, compute_c_logicb }, |
5286 |
[CC_OP_LOGICW] = { compute_all_logicw, compute_c_logicw }, |
5287 |
[CC_OP_LOGICL] = { compute_all_logicl, compute_c_logicl }, |
5288 |
|
5289 |
[CC_OP_INCB] = { compute_all_incb, compute_c_incl }, |
5290 |
[CC_OP_INCW] = { compute_all_incw, compute_c_incl }, |
5291 |
[CC_OP_INCL] = { compute_all_incl, compute_c_incl }, |
5292 |
|
5293 |
[CC_OP_DECB] = { compute_all_decb, compute_c_incl }, |
5294 |
[CC_OP_DECW] = { compute_all_decw, compute_c_incl }, |
5295 |
[CC_OP_DECL] = { compute_all_decl, compute_c_incl }, |
5296 |
|
5297 |
[CC_OP_SHLB] = { compute_all_shlb, compute_c_shlb }, |
5298 |
[CC_OP_SHLW] = { compute_all_shlw, compute_c_shlw }, |
5299 |
[CC_OP_SHLL] = { compute_all_shll, compute_c_shll }, |
5300 |
|
5301 |
[CC_OP_SARB] = { compute_all_sarb, compute_c_sarl }, |
5302 |
[CC_OP_SARW] = { compute_all_sarw, compute_c_sarl }, |
5303 |
[CC_OP_SARL] = { compute_all_sarl, compute_c_sarl }, |
5304 |
|
5305 |
#ifdef TARGET_X86_64
|
5306 |
[CC_OP_MULQ] = { compute_all_mulq, compute_c_mull }, |
5307 |
|
5308 |
[CC_OP_ADDQ] = { compute_all_addq, compute_c_addq }, |
5309 |
|
5310 |
[CC_OP_ADCQ] = { compute_all_adcq, compute_c_adcq }, |
5311 |
|
5312 |
[CC_OP_SUBQ] = { compute_all_subq, compute_c_subq }, |
5313 |
|
5314 |
[CC_OP_SBBQ] = { compute_all_sbbq, compute_c_sbbq }, |
5315 |
|
5316 |
[CC_OP_LOGICQ] = { compute_all_logicq, compute_c_logicq }, |
5317 |
|
5318 |
[CC_OP_INCQ] = { compute_all_incq, compute_c_incl }, |
5319 |
|
5320 |
[CC_OP_DECQ] = { compute_all_decq, compute_c_incl }, |
5321 |
|
5322 |
[CC_OP_SHLQ] = { compute_all_shlq, compute_c_shlq }, |
5323 |
|
5324 |
[CC_OP_SARQ] = { compute_all_sarq, compute_c_sarl }, |
5325 |
#endif
|
5326 |
}; |
5327 |
|