root / target-i386 / helper.c @ d80c7d1c
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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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#include "exec.h" |
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|
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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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|
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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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|
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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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|
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/* thread support */
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spinlock_t global_cpu_lock = SPIN_LOCK_UNLOCKED; |
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void cpu_lock(void) |
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{ |
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spin_lock(&global_cpu_lock); |
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} |
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void cpu_unlock(void) |
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{ |
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spin_unlock(&global_cpu_lock); |
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} |
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void cpu_loop_exit(void) |
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{ |
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/* NOTE: the register at this point must be saved by hand because
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longjmp restore them */
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regs_to_env(); |
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longjmp(env->jmp_env, 1);
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} |
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/* return non zero if error */
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static inline int load_segment(uint32_t *e1_ptr, uint32_t *e2_ptr, |
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int selector)
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{ |
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SegmentCache *dt; |
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int index;
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target_ulong ptr; |
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if (selector & 0x4) |
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dt = &env->ldt; |
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else
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dt = &env->gdt; |
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index = selector & ~7;
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if ((index + 7) > dt->limit) |
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return -1; |
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ptr = dt->base + index; |
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*e1_ptr = ldl_kernel(ptr); |
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*e2_ptr = ldl_kernel(ptr + 4);
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return 0; |
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} |
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static inline unsigned int get_seg_limit(uint32_t e1, uint32_t e2) |
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{ |
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unsigned int limit; |
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limit = (e1 & 0xffff) | (e2 & 0x000f0000); |
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if (e2 & DESC_G_MASK)
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limit = (limit << 12) | 0xfff; |
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return limit;
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} |
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static inline uint32_t get_seg_base(uint32_t e1, uint32_t e2) |
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{ |
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return ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000)); |
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} |
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static inline void load_seg_cache_raw_dt(SegmentCache *sc, uint32_t e1, uint32_t e2) |
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{ |
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sc->base = get_seg_base(e1, e2); |
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sc->limit = get_seg_limit(e1, e2); |
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sc->flags = e2; |
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} |
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/* init the segment cache in vm86 mode. */
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static inline void load_seg_vm(int seg, int selector) |
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{ |
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selector &= 0xffff;
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cpu_x86_load_seg_cache(env, seg, selector, |
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(selector << 4), 0xffff, 0); |
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} |
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static inline void get_ss_esp_from_tss(uint32_t *ss_ptr, |
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uint32_t *esp_ptr, int dpl)
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{ |
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int type, index, shift;
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#if 0
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{
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int i;
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printf("TR: base=%p limit=%x\n", env->tr.base, env->tr.limit);
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for(i=0;i<env->tr.limit;i++) {
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printf("%02x ", env->tr.base[i]);
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if ((i & 7) == 7) printf("\n");
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}
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printf("\n");
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}
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#endif
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if (!(env->tr.flags & DESC_P_MASK))
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cpu_abort(env, "invalid tss");
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type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
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if ((type & 7) != 1) |
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cpu_abort(env, "invalid tss type");
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shift = type >> 3;
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index = (dpl * 4 + 2) << shift; |
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if (index + (4 << shift) - 1 > env->tr.limit) |
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raise_exception_err(EXCP0A_TSS, env->tr.selector & 0xfffc);
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if (shift == 0) { |
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*esp_ptr = lduw_kernel(env->tr.base + index); |
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*ss_ptr = lduw_kernel(env->tr.base + index + 2);
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} else {
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*esp_ptr = ldl_kernel(env->tr.base + index); |
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*ss_ptr = lduw_kernel(env->tr.base + index + 4);
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} |
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} |
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/* XXX: merge with load_seg() */
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static void tss_load_seg(int seg_reg, int selector) |
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{ |
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uint32_t e1, e2; |
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int rpl, dpl, cpl;
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if ((selector & 0xfffc) != 0) { |
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if (load_segment(&e1, &e2, selector) != 0) |
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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if (!(e2 & DESC_S_MASK))
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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rpl = selector & 3;
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dpl = (e2 >> DESC_DPL_SHIFT) & 3;
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cpl = env->hflags & HF_CPL_MASK; |
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if (seg_reg == R_CS) {
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if (!(e2 & DESC_CS_MASK))
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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/* XXX: is it correct ? */
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if (dpl != rpl)
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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if ((e2 & DESC_C_MASK) && dpl > rpl)
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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} else if (seg_reg == R_SS) { |
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/* SS must be writable data */
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if ((e2 & DESC_CS_MASK) || !(e2 & DESC_W_MASK))
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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if (dpl != cpl || dpl != rpl)
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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} else {
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/* not readable code */
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if ((e2 & DESC_CS_MASK) && !(e2 & DESC_R_MASK))
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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/* if data or non conforming code, checks the rights */
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if (((e2 >> DESC_TYPE_SHIFT) & 0xf) < 12) { |
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if (dpl < cpl || dpl < rpl)
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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} |
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} |
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if (!(e2 & DESC_P_MASK))
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raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
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cpu_x86_load_seg_cache(env, seg_reg, selector, |
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get_seg_base(e1, e2), |
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get_seg_limit(e1, e2), |
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e2); |
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} else {
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if (seg_reg == R_SS || seg_reg == R_CS)
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raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
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} |
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} |
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|
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#define SWITCH_TSS_JMP 0 |
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#define SWITCH_TSS_IRET 1 |
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#define SWITCH_TSS_CALL 2 |
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|
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/* XXX: restore CPU state in registers (PowerPC case) */
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static void switch_tss(int tss_selector, |
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uint32_t e1, uint32_t e2, int source,
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uint32_t next_eip) |
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{ |
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int tss_limit, tss_limit_max, type, old_tss_limit_max, old_type, v1, v2, i;
|
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target_ulong tss_base; |
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uint32_t new_regs[8], new_segs[6]; |
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uint32_t new_eflags, new_eip, new_cr3, new_ldt, new_trap; |
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uint32_t old_eflags, eflags_mask; |
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SegmentCache *dt; |
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int index;
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target_ulong ptr; |
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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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} |
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|
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if (!(e2 & DESC_P_MASK))
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raise_exception_err(EXCP0B_NOSEG, tss_selector & 0xfffc);
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|
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if (type & 8) |
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tss_limit_max = 103;
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else
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tss_limit_max = 43;
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tss_limit = get_seg_limit(e1, e2); |
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tss_base = get_seg_base(e1, e2); |
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if ((tss_selector & 4) != 0 || |
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tss_limit < tss_limit_max) |
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raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
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old_type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
|
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if (old_type & 8) |
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old_tss_limit_max = 103;
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else
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old_tss_limit_max = 43;
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|
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/* read all the registers from the new TSS */
|
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if (type & 8) { |
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/* 32 bit */
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new_cr3 = ldl_kernel(tss_base + 0x1c);
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new_eip = ldl_kernel(tss_base + 0x20);
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new_eflags = ldl_kernel(tss_base + 0x24);
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for(i = 0; i < 8; i++) |
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new_regs[i] = ldl_kernel(tss_base + (0x28 + i * 4)); |
318 |
for(i = 0; i < 6; i++) |
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new_segs[i] = lduw_kernel(tss_base + (0x48 + i * 4)); |
320 |
new_ldt = lduw_kernel(tss_base + 0x60);
|
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new_trap = ldl_kernel(tss_base + 0x64);
|
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} else {
|
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/* 16 bit */
|
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new_cr3 = 0;
|
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new_eip = lduw_kernel(tss_base + 0x0e);
|
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new_eflags = lduw_kernel(tss_base + 0x10);
|
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for(i = 0; i < 8; i++) |
328 |
new_regs[i] = lduw_kernel(tss_base + (0x12 + i * 2)) | 0xffff0000; |
329 |
for(i = 0; i < 4; i++) |
330 |
new_segs[i] = lduw_kernel(tss_base + (0x22 + i * 4)); |
331 |
new_ldt = lduw_kernel(tss_base + 0x2a);
|
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new_segs[R_FS] = 0;
|
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new_segs[R_GS] = 0;
|
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new_trap = 0;
|
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} |
336 |
|
337 |
/* NOTE: we must avoid memory exceptions during the task switch,
|
338 |
so we make dummy accesses before */
|
339 |
/* XXX: it can still fail in some cases, so a bigger hack is
|
340 |
necessary to valid the TLB after having done the accesses */
|
341 |
|
342 |
v1 = ldub_kernel(env->tr.base); |
343 |
v2 = ldub_kernel(env->tr.base + old_tss_limit_max); |
344 |
stb_kernel(env->tr.base, v1); |
345 |
stb_kernel(env->tr.base + old_tss_limit_max, v2); |
346 |
|
347 |
/* clear busy bit (it is restartable) */
|
348 |
if (source == SWITCH_TSS_JMP || source == SWITCH_TSS_IRET) {
|
349 |
target_ulong ptr; |
350 |
uint32_t e2; |
351 |
ptr = env->gdt.base + (env->tr.selector & ~7);
|
352 |
e2 = ldl_kernel(ptr + 4);
|
353 |
e2 &= ~DESC_TSS_BUSY_MASK; |
354 |
stl_kernel(ptr + 4, e2);
|
355 |
} |
356 |
old_eflags = compute_eflags(); |
357 |
if (source == SWITCH_TSS_IRET)
|
358 |
old_eflags &= ~NT_MASK; |
359 |
|
360 |
/* save the current state in the old TSS */
|
361 |
if (type & 8) { |
362 |
/* 32 bit */
|
363 |
stl_kernel(env->tr.base + 0x20, next_eip);
|
364 |
stl_kernel(env->tr.base + 0x24, old_eflags);
|
365 |
stl_kernel(env->tr.base + (0x28 + 0 * 4), EAX); |
366 |
stl_kernel(env->tr.base + (0x28 + 1 * 4), ECX); |
367 |
stl_kernel(env->tr.base + (0x28 + 2 * 4), EDX); |
368 |
stl_kernel(env->tr.base + (0x28 + 3 * 4), EBX); |
369 |
stl_kernel(env->tr.base + (0x28 + 4 * 4), ESP); |
370 |
stl_kernel(env->tr.base + (0x28 + 5 * 4), EBP); |
371 |
stl_kernel(env->tr.base + (0x28 + 6 * 4), ESI); |
372 |
stl_kernel(env->tr.base + (0x28 + 7 * 4), EDI); |
373 |
for(i = 0; i < 6; i++) |
374 |
stw_kernel(env->tr.base + (0x48 + i * 4), env->segs[i].selector); |
375 |
} else {
|
376 |
/* 16 bit */
|
377 |
stw_kernel(env->tr.base + 0x0e, next_eip);
|
378 |
stw_kernel(env->tr.base + 0x10, old_eflags);
|
379 |
stw_kernel(env->tr.base + (0x12 + 0 * 2), EAX); |
380 |
stw_kernel(env->tr.base + (0x12 + 1 * 2), ECX); |
381 |
stw_kernel(env->tr.base + (0x12 + 2 * 2), EDX); |
382 |
stw_kernel(env->tr.base + (0x12 + 3 * 2), EBX); |
383 |
stw_kernel(env->tr.base + (0x12 + 4 * 2), ESP); |
384 |
stw_kernel(env->tr.base + (0x12 + 5 * 2), EBP); |
385 |
stw_kernel(env->tr.base + (0x12 + 6 * 2), ESI); |
386 |
stw_kernel(env->tr.base + (0x12 + 7 * 2), EDI); |
387 |
for(i = 0; i < 4; i++) |
388 |
stw_kernel(env->tr.base + (0x22 + i * 4), env->segs[i].selector); |
389 |
} |
390 |
|
391 |
/* now if an exception occurs, it will occurs in the next task
|
392 |
context */
|
393 |
|
394 |
if (source == SWITCH_TSS_CALL) {
|
395 |
stw_kernel(tss_base, env->tr.selector); |
396 |
new_eflags |= NT_MASK; |
397 |
} |
398 |
|
399 |
/* set busy bit */
|
400 |
if (source == SWITCH_TSS_JMP || source == SWITCH_TSS_CALL) {
|
401 |
target_ulong ptr; |
402 |
uint32_t e2; |
403 |
ptr = env->gdt.base + (tss_selector & ~7);
|
404 |
e2 = ldl_kernel(ptr + 4);
|
405 |
e2 |= DESC_TSS_BUSY_MASK; |
406 |
stl_kernel(ptr + 4, e2);
|
407 |
} |
408 |
|
409 |
/* set the new CPU state */
|
410 |
/* from this point, any exception which occurs can give problems */
|
411 |
env->cr[0] |= CR0_TS_MASK;
|
412 |
env->hflags |= HF_TS_MASK; |
413 |
env->tr.selector = tss_selector; |
414 |
env->tr.base = tss_base; |
415 |
env->tr.limit = tss_limit; |
416 |
env->tr.flags = e2 & ~DESC_TSS_BUSY_MASK; |
417 |
|
418 |
if ((type & 8) && (env->cr[0] & CR0_PG_MASK)) { |
419 |
cpu_x86_update_cr3(env, new_cr3); |
420 |
} |
421 |
|
422 |
/* load all registers without an exception, then reload them with
|
423 |
possible exception */
|
424 |
env->eip = new_eip; |
425 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | |
426 |
IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK; |
427 |
if (!(type & 8)) |
428 |
eflags_mask &= 0xffff;
|
429 |
load_eflags(new_eflags, eflags_mask); |
430 |
/* XXX: what to do in 16 bit case ? */
|
431 |
EAX = new_regs[0];
|
432 |
ECX = new_regs[1];
|
433 |
EDX = new_regs[2];
|
434 |
EBX = new_regs[3];
|
435 |
ESP = new_regs[4];
|
436 |
EBP = new_regs[5];
|
437 |
ESI = new_regs[6];
|
438 |
EDI = new_regs[7];
|
439 |
if (new_eflags & VM_MASK) {
|
440 |
for(i = 0; i < 6; i++) |
441 |
load_seg_vm(i, new_segs[i]); |
442 |
/* in vm86, CPL is always 3 */
|
443 |
cpu_x86_set_cpl(env, 3);
|
444 |
} else {
|
445 |
/* CPL is set the RPL of CS */
|
446 |
cpu_x86_set_cpl(env, new_segs[R_CS] & 3);
|
447 |
/* first just selectors as the rest may trigger exceptions */
|
448 |
for(i = 0; i < 6; i++) |
449 |
cpu_x86_load_seg_cache(env, i, new_segs[i], 0, 0, 0); |
450 |
} |
451 |
|
452 |
env->ldt.selector = new_ldt & ~4;
|
453 |
env->ldt.base = 0;
|
454 |
env->ldt.limit = 0;
|
455 |
env->ldt.flags = 0;
|
456 |
|
457 |
/* load the LDT */
|
458 |
if (new_ldt & 4) |
459 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
460 |
|
461 |
if ((new_ldt & 0xfffc) != 0) { |
462 |
dt = &env->gdt; |
463 |
index = new_ldt & ~7;
|
464 |
if ((index + 7) > dt->limit) |
465 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
466 |
ptr = dt->base + index; |
467 |
e1 = ldl_kernel(ptr); |
468 |
e2 = ldl_kernel(ptr + 4);
|
469 |
if ((e2 & DESC_S_MASK) || ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2) |
470 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
471 |
if (!(e2 & DESC_P_MASK))
|
472 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
473 |
load_seg_cache_raw_dt(&env->ldt, e1, e2); |
474 |
} |
475 |
|
476 |
/* load the segments */
|
477 |
if (!(new_eflags & VM_MASK)) {
|
478 |
tss_load_seg(R_CS, new_segs[R_CS]); |
479 |
tss_load_seg(R_SS, new_segs[R_SS]); |
480 |
tss_load_seg(R_ES, new_segs[R_ES]); |
481 |
tss_load_seg(R_DS, new_segs[R_DS]); |
482 |
tss_load_seg(R_FS, new_segs[R_FS]); |
483 |
tss_load_seg(R_GS, new_segs[R_GS]); |
484 |
} |
485 |
|
486 |
/* check that EIP is in the CS segment limits */
|
487 |
if (new_eip > env->segs[R_CS].limit) {
|
488 |
/* XXX: different exception if CALL ? */
|
489 |
raise_exception_err(EXCP0D_GPF, 0);
|
490 |
} |
491 |
} |
492 |
|
493 |
/* check if Port I/O is allowed in TSS */
|
494 |
static inline void check_io(int addr, int size) |
495 |
{ |
496 |
int io_offset, val, mask;
|
497 |
|
498 |
/* TSS must be a valid 32 bit one */
|
499 |
if (!(env->tr.flags & DESC_P_MASK) ||
|
500 |
((env->tr.flags >> DESC_TYPE_SHIFT) & 0xf) != 9 || |
501 |
env->tr.limit < 103)
|
502 |
goto fail;
|
503 |
io_offset = lduw_kernel(env->tr.base + 0x66);
|
504 |
io_offset += (addr >> 3);
|
505 |
/* Note: the check needs two bytes */
|
506 |
if ((io_offset + 1) > env->tr.limit) |
507 |
goto fail;
|
508 |
val = lduw_kernel(env->tr.base + io_offset); |
509 |
val >>= (addr & 7);
|
510 |
mask = (1 << size) - 1; |
511 |
/* all bits must be zero to allow the I/O */
|
512 |
if ((val & mask) != 0) { |
513 |
fail:
|
514 |
raise_exception_err(EXCP0D_GPF, 0);
|
515 |
} |
516 |
} |
517 |
|
518 |
void check_iob_T0(void) |
519 |
{ |
520 |
check_io(T0, 1);
|
521 |
} |
522 |
|
523 |
void check_iow_T0(void) |
524 |
{ |
525 |
check_io(T0, 2);
|
526 |
} |
527 |
|
528 |
void check_iol_T0(void) |
529 |
{ |
530 |
check_io(T0, 4);
|
531 |
} |
532 |
|
533 |
void check_iob_DX(void) |
534 |
{ |
535 |
check_io(EDX & 0xffff, 1); |
536 |
} |
537 |
|
538 |
void check_iow_DX(void) |
539 |
{ |
540 |
check_io(EDX & 0xffff, 2); |
541 |
} |
542 |
|
543 |
void check_iol_DX(void) |
544 |
{ |
545 |
check_io(EDX & 0xffff, 4); |
546 |
} |
547 |
|
548 |
static inline unsigned int get_sp_mask(unsigned int e2) |
549 |
{ |
550 |
if (e2 & DESC_B_MASK)
|
551 |
return 0xffffffff; |
552 |
else
|
553 |
return 0xffff; |
554 |
} |
555 |
|
556 |
#ifdef TARGET_X86_64
|
557 |
#define SET_ESP(val, sp_mask)\
|
558 |
do {\
|
559 |
if ((sp_mask) == 0xffff)\ |
560 |
ESP = (ESP & ~0xffff) | ((val) & 0xffff);\ |
561 |
else if ((sp_mask) == 0xffffffffLL)\ |
562 |
ESP = (uint32_t)(val);\ |
563 |
else\
|
564 |
ESP = (val);\ |
565 |
} while (0) |
566 |
#else
|
567 |
#define SET_ESP(val, sp_mask) ESP = (ESP & ~(sp_mask)) | ((val) & (sp_mask))
|
568 |
#endif
|
569 |
|
570 |
/* XXX: add a is_user flag to have proper security support */
|
571 |
#define PUSHW(ssp, sp, sp_mask, val)\
|
572 |
{\ |
573 |
sp -= 2;\
|
574 |
stw_kernel((ssp) + (sp & (sp_mask)), (val));\ |
575 |
} |
576 |
|
577 |
#define PUSHL(ssp, sp, sp_mask, val)\
|
578 |
{\ |
579 |
sp -= 4;\
|
580 |
stl_kernel((ssp) + (sp & (sp_mask)), (val));\ |
581 |
} |
582 |
|
583 |
#define POPW(ssp, sp, sp_mask, val)\
|
584 |
{\ |
585 |
val = lduw_kernel((ssp) + (sp & (sp_mask)));\ |
586 |
sp += 2;\
|
587 |
} |
588 |
|
589 |
#define POPL(ssp, sp, sp_mask, val)\
|
590 |
{\ |
591 |
val = (uint32_t)ldl_kernel((ssp) + (sp & (sp_mask)));\ |
592 |
sp += 4;\
|
593 |
} |
594 |
|
595 |
/* protected mode interrupt */
|
596 |
static void do_interrupt_protected(int intno, int is_int, int error_code, |
597 |
unsigned int next_eip, int is_hw) |
598 |
{ |
599 |
SegmentCache *dt; |
600 |
target_ulong ptr, ssp; |
601 |
int type, dpl, selector, ss_dpl, cpl;
|
602 |
int has_error_code, new_stack, shift;
|
603 |
uint32_t e1, e2, offset, ss, esp, ss_e1, ss_e2; |
604 |
uint32_t old_eip, sp_mask; |
605 |
|
606 |
has_error_code = 0;
|
607 |
if (!is_int && !is_hw) {
|
608 |
switch(intno) {
|
609 |
case 8: |
610 |
case 10: |
611 |
case 11: |
612 |
case 12: |
613 |
case 13: |
614 |
case 14: |
615 |
case 17: |
616 |
has_error_code = 1;
|
617 |
break;
|
618 |
} |
619 |
} |
620 |
if (is_int)
|
621 |
old_eip = next_eip; |
622 |
else
|
623 |
old_eip = env->eip; |
624 |
|
625 |
dt = &env->idt; |
626 |
if (intno * 8 + 7 > dt->limit) |
627 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
628 |
ptr = dt->base + intno * 8;
|
629 |
e1 = ldl_kernel(ptr); |
630 |
e2 = ldl_kernel(ptr + 4);
|
631 |
/* check gate type */
|
632 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
633 |
switch(type) {
|
634 |
case 5: /* task gate */ |
635 |
/* must do that check here to return the correct error code */
|
636 |
if (!(e2 & DESC_P_MASK))
|
637 |
raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2); |
638 |
switch_tss(intno * 8, e1, e2, SWITCH_TSS_CALL, old_eip);
|
639 |
if (has_error_code) {
|
640 |
int type;
|
641 |
uint32_t mask; |
642 |
/* push the error code */
|
643 |
type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
|
644 |
shift = type >> 3;
|
645 |
if (env->segs[R_SS].flags & DESC_B_MASK)
|
646 |
mask = 0xffffffff;
|
647 |
else
|
648 |
mask = 0xffff;
|
649 |
esp = (ESP - (2 << shift)) & mask;
|
650 |
ssp = env->segs[R_SS].base + esp; |
651 |
if (shift)
|
652 |
stl_kernel(ssp, error_code); |
653 |
else
|
654 |
stw_kernel(ssp, error_code); |
655 |
SET_ESP(esp, mask); |
656 |
} |
657 |
return;
|
658 |
case 6: /* 286 interrupt gate */ |
659 |
case 7: /* 286 trap gate */ |
660 |
case 14: /* 386 interrupt gate */ |
661 |
case 15: /* 386 trap gate */ |
662 |
break;
|
663 |
default:
|
664 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
665 |
break;
|
666 |
} |
667 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
668 |
cpl = env->hflags & HF_CPL_MASK; |
669 |
/* check privledge if software int */
|
670 |
if (is_int && dpl < cpl)
|
671 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
672 |
/* check valid bit */
|
673 |
if (!(e2 & DESC_P_MASK))
|
674 |
raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2); |
675 |
selector = e1 >> 16;
|
676 |
offset = (e2 & 0xffff0000) | (e1 & 0x0000ffff); |
677 |
if ((selector & 0xfffc) == 0) |
678 |
raise_exception_err(EXCP0D_GPF, 0);
|
679 |
|
680 |
if (load_segment(&e1, &e2, selector) != 0) |
681 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
682 |
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
683 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
684 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
685 |
if (dpl > cpl)
|
686 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
687 |
if (!(e2 & DESC_P_MASK))
|
688 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
689 |
if (!(e2 & DESC_C_MASK) && dpl < cpl) {
|
690 |
/* to inner priviledge */
|
691 |
get_ss_esp_from_tss(&ss, &esp, dpl); |
692 |
if ((ss & 0xfffc) == 0) |
693 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
694 |
if ((ss & 3) != dpl) |
695 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
696 |
if (load_segment(&ss_e1, &ss_e2, ss) != 0) |
697 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
698 |
ss_dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
699 |
if (ss_dpl != dpl)
|
700 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
701 |
if (!(ss_e2 & DESC_S_MASK) ||
|
702 |
(ss_e2 & DESC_CS_MASK) || |
703 |
!(ss_e2 & DESC_W_MASK)) |
704 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
705 |
if (!(ss_e2 & DESC_P_MASK))
|
706 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
707 |
new_stack = 1;
|
708 |
sp_mask = get_sp_mask(ss_e2); |
709 |
ssp = get_seg_base(ss_e1, ss_e2); |
710 |
} else if ((e2 & DESC_C_MASK) || dpl == cpl) { |
711 |
/* to same priviledge */
|
712 |
if (env->eflags & VM_MASK)
|
713 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
714 |
new_stack = 0;
|
715 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
716 |
ssp = env->segs[R_SS].base; |
717 |
esp = ESP; |
718 |
dpl = cpl; |
719 |
} else {
|
720 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
721 |
new_stack = 0; /* avoid warning */ |
722 |
sp_mask = 0; /* avoid warning */ |
723 |
ssp = 0; /* avoid warning */ |
724 |
esp = 0; /* avoid warning */ |
725 |
} |
726 |
|
727 |
shift = type >> 3;
|
728 |
|
729 |
#if 0
|
730 |
/* XXX: check that enough room is available */
|
731 |
push_size = 6 + (new_stack << 2) + (has_error_code << 1);
|
732 |
if (env->eflags & VM_MASK)
|
733 |
push_size += 8;
|
734 |
push_size <<= shift;
|
735 |
#endif
|
736 |
if (shift == 1) { |
737 |
if (new_stack) {
|
738 |
if (env->eflags & VM_MASK) {
|
739 |
PUSHL(ssp, esp, sp_mask, env->segs[R_GS].selector); |
740 |
PUSHL(ssp, esp, sp_mask, env->segs[R_FS].selector); |
741 |
PUSHL(ssp, esp, sp_mask, env->segs[R_DS].selector); |
742 |
PUSHL(ssp, esp, sp_mask, env->segs[R_ES].selector); |
743 |
} |
744 |
PUSHL(ssp, esp, sp_mask, env->segs[R_SS].selector); |
745 |
PUSHL(ssp, esp, sp_mask, ESP); |
746 |
} |
747 |
PUSHL(ssp, esp, sp_mask, compute_eflags()); |
748 |
PUSHL(ssp, esp, sp_mask, env->segs[R_CS].selector); |
749 |
PUSHL(ssp, esp, sp_mask, old_eip); |
750 |
if (has_error_code) {
|
751 |
PUSHL(ssp, esp, sp_mask, error_code); |
752 |
} |
753 |
} else {
|
754 |
if (new_stack) {
|
755 |
if (env->eflags & VM_MASK) {
|
756 |
PUSHW(ssp, esp, sp_mask, env->segs[R_GS].selector); |
757 |
PUSHW(ssp, esp, sp_mask, env->segs[R_FS].selector); |
758 |
PUSHW(ssp, esp, sp_mask, env->segs[R_DS].selector); |
759 |
PUSHW(ssp, esp, sp_mask, env->segs[R_ES].selector); |
760 |
} |
761 |
PUSHW(ssp, esp, sp_mask, env->segs[R_SS].selector); |
762 |
PUSHW(ssp, esp, sp_mask, ESP); |
763 |
} |
764 |
PUSHW(ssp, esp, sp_mask, compute_eflags()); |
765 |
PUSHW(ssp, esp, sp_mask, env->segs[R_CS].selector); |
766 |
PUSHW(ssp, esp, sp_mask, old_eip); |
767 |
if (has_error_code) {
|
768 |
PUSHW(ssp, esp, sp_mask, error_code); |
769 |
} |
770 |
} |
771 |
|
772 |
if (new_stack) {
|
773 |
if (env->eflags & VM_MASK) {
|
774 |
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0, 0); |
775 |
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0, 0); |
776 |
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0, 0); |
777 |
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0, 0); |
778 |
} |
779 |
ss = (ss & ~3) | dpl;
|
780 |
cpu_x86_load_seg_cache(env, R_SS, ss, |
781 |
ssp, get_seg_limit(ss_e1, ss_e2), ss_e2); |
782 |
} |
783 |
SET_ESP(esp, sp_mask); |
784 |
|
785 |
selector = (selector & ~3) | dpl;
|
786 |
cpu_x86_load_seg_cache(env, R_CS, selector, |
787 |
get_seg_base(e1, e2), |
788 |
get_seg_limit(e1, e2), |
789 |
e2); |
790 |
cpu_x86_set_cpl(env, dpl); |
791 |
env->eip = offset; |
792 |
|
793 |
/* interrupt gate clear IF mask */
|
794 |
if ((type & 1) == 0) { |
795 |
env->eflags &= ~IF_MASK; |
796 |
} |
797 |
env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK); |
798 |
} |
799 |
|
800 |
#ifdef TARGET_X86_64
|
801 |
|
802 |
#define PUSHQ(sp, val)\
|
803 |
{\ |
804 |
sp -= 8;\
|
805 |
stq_kernel(sp, (val));\ |
806 |
} |
807 |
|
808 |
#define POPQ(sp, val)\
|
809 |
{\ |
810 |
val = ldq_kernel(sp);\ |
811 |
sp += 8;\
|
812 |
} |
813 |
|
814 |
static inline target_ulong get_rsp_from_tss(int level) |
815 |
{ |
816 |
int index;
|
817 |
|
818 |
#if 0
|
819 |
printf("TR: base=" TARGET_FMT_lx " limit=%x\n",
|
820 |
env->tr.base, env->tr.limit);
|
821 |
#endif
|
822 |
|
823 |
if (!(env->tr.flags & DESC_P_MASK))
|
824 |
cpu_abort(env, "invalid tss");
|
825 |
index = 8 * level + 4; |
826 |
if ((index + 7) > env->tr.limit) |
827 |
raise_exception_err(EXCP0A_TSS, env->tr.selector & 0xfffc);
|
828 |
return ldq_kernel(env->tr.base + index);
|
829 |
} |
830 |
|
831 |
/* 64 bit interrupt */
|
832 |
static void do_interrupt64(int intno, int is_int, int error_code, |
833 |
target_ulong next_eip, int is_hw)
|
834 |
{ |
835 |
SegmentCache *dt; |
836 |
target_ulong ptr; |
837 |
int type, dpl, selector, cpl, ist;
|
838 |
int has_error_code, new_stack;
|
839 |
uint32_t e1, e2, e3, ss; |
840 |
target_ulong old_eip, esp, offset; |
841 |
|
842 |
has_error_code = 0;
|
843 |
if (!is_int && !is_hw) {
|
844 |
switch(intno) {
|
845 |
case 8: |
846 |
case 10: |
847 |
case 11: |
848 |
case 12: |
849 |
case 13: |
850 |
case 14: |
851 |
case 17: |
852 |
has_error_code = 1;
|
853 |
break;
|
854 |
} |
855 |
} |
856 |
if (is_int)
|
857 |
old_eip = next_eip; |
858 |
else
|
859 |
old_eip = env->eip; |
860 |
|
861 |
dt = &env->idt; |
862 |
if (intno * 16 + 15 > dt->limit) |
863 |
raise_exception_err(EXCP0D_GPF, intno * 16 + 2); |
864 |
ptr = dt->base + intno * 16;
|
865 |
e1 = ldl_kernel(ptr); |
866 |
e2 = ldl_kernel(ptr + 4);
|
867 |
e3 = ldl_kernel(ptr + 8);
|
868 |
/* check gate type */
|
869 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
870 |
switch(type) {
|
871 |
case 14: /* 386 interrupt gate */ |
872 |
case 15: /* 386 trap gate */ |
873 |
break;
|
874 |
default:
|
875 |
raise_exception_err(EXCP0D_GPF, intno * 16 + 2); |
876 |
break;
|
877 |
} |
878 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
879 |
cpl = env->hflags & HF_CPL_MASK; |
880 |
/* check privledge if software int */
|
881 |
if (is_int && dpl < cpl)
|
882 |
raise_exception_err(EXCP0D_GPF, intno * 16 + 2); |
883 |
/* check valid bit */
|
884 |
if (!(e2 & DESC_P_MASK))
|
885 |
raise_exception_err(EXCP0B_NOSEG, intno * 16 + 2); |
886 |
selector = e1 >> 16;
|
887 |
offset = ((target_ulong)e3 << 32) | (e2 & 0xffff0000) | (e1 & 0x0000ffff); |
888 |
ist = e2 & 7;
|
889 |
if ((selector & 0xfffc) == 0) |
890 |
raise_exception_err(EXCP0D_GPF, 0);
|
891 |
|
892 |
if (load_segment(&e1, &e2, selector) != 0) |
893 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
894 |
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
895 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
896 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
897 |
if (dpl > cpl)
|
898 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
899 |
if (!(e2 & DESC_P_MASK))
|
900 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
901 |
if (!(e2 & DESC_L_MASK) || (e2 & DESC_B_MASK))
|
902 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
903 |
if ((!(e2 & DESC_C_MASK) && dpl < cpl) || ist != 0) { |
904 |
/* to inner priviledge */
|
905 |
if (ist != 0) |
906 |
esp = get_rsp_from_tss(ist + 3);
|
907 |
else
|
908 |
esp = get_rsp_from_tss(dpl); |
909 |
esp &= ~0xfLL; /* align stack */ |
910 |
ss = 0;
|
911 |
new_stack = 1;
|
912 |
} else if ((e2 & DESC_C_MASK) || dpl == cpl) { |
913 |
/* to same priviledge */
|
914 |
if (env->eflags & VM_MASK)
|
915 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
916 |
new_stack = 0;
|
917 |
if (ist != 0) |
918 |
esp = get_rsp_from_tss(ist + 3);
|
919 |
else
|
920 |
esp = ESP; |
921 |
esp &= ~0xfLL; /* align stack */ |
922 |
dpl = cpl; |
923 |
} else {
|
924 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
925 |
new_stack = 0; /* avoid warning */ |
926 |
esp = 0; /* avoid warning */ |
927 |
} |
928 |
|
929 |
PUSHQ(esp, env->segs[R_SS].selector); |
930 |
PUSHQ(esp, ESP); |
931 |
PUSHQ(esp, compute_eflags()); |
932 |
PUSHQ(esp, env->segs[R_CS].selector); |
933 |
PUSHQ(esp, old_eip); |
934 |
if (has_error_code) {
|
935 |
PUSHQ(esp, error_code); |
936 |
} |
937 |
|
938 |
if (new_stack) {
|
939 |
ss = 0 | dpl;
|
940 |
cpu_x86_load_seg_cache(env, R_SS, ss, 0, 0, 0); |
941 |
} |
942 |
ESP = esp; |
943 |
|
944 |
selector = (selector & ~3) | dpl;
|
945 |
cpu_x86_load_seg_cache(env, R_CS, selector, |
946 |
get_seg_base(e1, e2), |
947 |
get_seg_limit(e1, e2), |
948 |
e2); |
949 |
cpu_x86_set_cpl(env, dpl); |
950 |
env->eip = offset; |
951 |
|
952 |
/* interrupt gate clear IF mask */
|
953 |
if ((type & 1) == 0) { |
954 |
env->eflags &= ~IF_MASK; |
955 |
} |
956 |
env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK); |
957 |
} |
958 |
#endif
|
959 |
|
960 |
void helper_syscall(int next_eip_addend) |
961 |
{ |
962 |
int selector;
|
963 |
|
964 |
if (!(env->efer & MSR_EFER_SCE)) {
|
965 |
raise_exception_err(EXCP06_ILLOP, 0);
|
966 |
} |
967 |
selector = (env->star >> 32) & 0xffff; |
968 |
#ifdef TARGET_X86_64
|
969 |
if (env->hflags & HF_LMA_MASK) {
|
970 |
int code64;
|
971 |
|
972 |
ECX = env->eip + next_eip_addend; |
973 |
env->regs[11] = compute_eflags();
|
974 |
|
975 |
code64 = env->hflags & HF_CS64_MASK; |
976 |
|
977 |
cpu_x86_set_cpl(env, 0);
|
978 |
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
|
979 |
0, 0xffffffff, |
980 |
DESC_G_MASK | DESC_P_MASK | |
981 |
DESC_S_MASK | |
982 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK); |
983 |
cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc, |
984 |
0, 0xffffffff, |
985 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
986 |
DESC_S_MASK | |
987 |
DESC_W_MASK | DESC_A_MASK); |
988 |
env->eflags &= ~env->fmask; |
989 |
if (code64)
|
990 |
env->eip = env->lstar; |
991 |
else
|
992 |
env->eip = env->cstar; |
993 |
} else
|
994 |
#endif
|
995 |
{ |
996 |
ECX = (uint32_t)(env->eip + next_eip_addend); |
997 |
|
998 |
cpu_x86_set_cpl(env, 0);
|
999 |
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
|
1000 |
0, 0xffffffff, |
1001 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1002 |
DESC_S_MASK | |
1003 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
1004 |
cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc, |
1005 |
0, 0xffffffff, |
1006 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1007 |
DESC_S_MASK | |
1008 |
DESC_W_MASK | DESC_A_MASK); |
1009 |
env->eflags &= ~(IF_MASK | RF_MASK | VM_MASK); |
1010 |
env->eip = (uint32_t)env->star; |
1011 |
} |
1012 |
} |
1013 |
|
1014 |
void helper_sysret(int dflag) |
1015 |
{ |
1016 |
int cpl, selector;
|
1017 |
|
1018 |
if (!(env->efer & MSR_EFER_SCE)) {
|
1019 |
raise_exception_err(EXCP06_ILLOP, 0);
|
1020 |
} |
1021 |
cpl = env->hflags & HF_CPL_MASK; |
1022 |
if (!(env->cr[0] & CR0_PE_MASK) || cpl != 0) { |
1023 |
raise_exception_err(EXCP0D_GPF, 0);
|
1024 |
} |
1025 |
selector = (env->star >> 48) & 0xffff; |
1026 |
#ifdef TARGET_X86_64
|
1027 |
if (env->hflags & HF_LMA_MASK) {
|
1028 |
if (dflag == 2) { |
1029 |
cpu_x86_load_seg_cache(env, R_CS, (selector + 16) | 3, |
1030 |
0, 0xffffffff, |
1031 |
DESC_G_MASK | DESC_P_MASK | |
1032 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1033 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | |
1034 |
DESC_L_MASK); |
1035 |
env->eip = ECX; |
1036 |
} else {
|
1037 |
cpu_x86_load_seg_cache(env, R_CS, selector | 3,
|
1038 |
0, 0xffffffff, |
1039 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1040 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1041 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
1042 |
env->eip = (uint32_t)ECX; |
1043 |
} |
1044 |
cpu_x86_load_seg_cache(env, R_SS, selector + 8,
|
1045 |
0, 0xffffffff, |
1046 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1047 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1048 |
DESC_W_MASK | DESC_A_MASK); |
1049 |
load_eflags((uint32_t)(env->regs[11]), TF_MASK | AC_MASK | ID_MASK |
|
1050 |
IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK); |
1051 |
cpu_x86_set_cpl(env, 3);
|
1052 |
} else
|
1053 |
#endif
|
1054 |
{ |
1055 |
cpu_x86_load_seg_cache(env, R_CS, selector | 3,
|
1056 |
0, 0xffffffff, |
1057 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1058 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1059 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
1060 |
env->eip = (uint32_t)ECX; |
1061 |
cpu_x86_load_seg_cache(env, R_SS, selector + 8,
|
1062 |
0, 0xffffffff, |
1063 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1064 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1065 |
DESC_W_MASK | DESC_A_MASK); |
1066 |
env->eflags |= IF_MASK; |
1067 |
cpu_x86_set_cpl(env, 3);
|
1068 |
} |
1069 |
#ifdef USE_KQEMU
|
1070 |
if (kqemu_is_ok(env)) {
|
1071 |
if (env->hflags & HF_LMA_MASK)
|
1072 |
CC_OP = CC_OP_EFLAGS; |
1073 |
env->exception_index = -1;
|
1074 |
cpu_loop_exit(); |
1075 |
} |
1076 |
#endif
|
1077 |
} |
1078 |
|
1079 |
/* real mode interrupt */
|
1080 |
static void do_interrupt_real(int intno, int is_int, int error_code, |
1081 |
unsigned int next_eip) |
1082 |
{ |
1083 |
SegmentCache *dt; |
1084 |
target_ulong ptr, ssp; |
1085 |
int selector;
|
1086 |
uint32_t offset, esp; |
1087 |
uint32_t old_cs, old_eip; |
1088 |
|
1089 |
/* real mode (simpler !) */
|
1090 |
dt = &env->idt; |
1091 |
if (intno * 4 + 3 > dt->limit) |
1092 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
1093 |
ptr = dt->base + intno * 4;
|
1094 |
offset = lduw_kernel(ptr); |
1095 |
selector = lduw_kernel(ptr + 2);
|
1096 |
esp = ESP; |
1097 |
ssp = env->segs[R_SS].base; |
1098 |
if (is_int)
|
1099 |
old_eip = next_eip; |
1100 |
else
|
1101 |
old_eip = env->eip; |
1102 |
old_cs = env->segs[R_CS].selector; |
1103 |
/* XXX: use SS segment size ? */
|
1104 |
PUSHW(ssp, esp, 0xffff, compute_eflags());
|
1105 |
PUSHW(ssp, esp, 0xffff, old_cs);
|
1106 |
PUSHW(ssp, esp, 0xffff, old_eip);
|
1107 |
|
1108 |
/* update processor state */
|
1109 |
ESP = (ESP & ~0xffff) | (esp & 0xffff); |
1110 |
env->eip = offset; |
1111 |
env->segs[R_CS].selector = selector; |
1112 |
env->segs[R_CS].base = (selector << 4);
|
1113 |
env->eflags &= ~(IF_MASK | TF_MASK | AC_MASK | RF_MASK); |
1114 |
} |
1115 |
|
1116 |
/* fake user mode interrupt */
|
1117 |
void do_interrupt_user(int intno, int is_int, int error_code, |
1118 |
target_ulong next_eip) |
1119 |
{ |
1120 |
SegmentCache *dt; |
1121 |
target_ulong ptr; |
1122 |
int dpl, cpl;
|
1123 |
uint32_t e2; |
1124 |
|
1125 |
dt = &env->idt; |
1126 |
ptr = dt->base + (intno * 8);
|
1127 |
e2 = ldl_kernel(ptr + 4);
|
1128 |
|
1129 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
1130 |
cpl = env->hflags & HF_CPL_MASK; |
1131 |
/* check privledge if software int */
|
1132 |
if (is_int && dpl < cpl)
|
1133 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
1134 |
|
1135 |
/* Since we emulate only user space, we cannot do more than
|
1136 |
exiting the emulation with the suitable exception and error
|
1137 |
code */
|
1138 |
if (is_int)
|
1139 |
EIP = next_eip; |
1140 |
} |
1141 |
|
1142 |
/*
|
1143 |
* Begin execution of an interruption. is_int is TRUE if coming from
|
1144 |
* the int instruction. next_eip is the EIP value AFTER the interrupt
|
1145 |
* instruction. It is only relevant if is_int is TRUE.
|
1146 |
*/
|
1147 |
void do_interrupt(int intno, int is_int, int error_code, |
1148 |
target_ulong next_eip, int is_hw)
|
1149 |
{ |
1150 |
if (loglevel & CPU_LOG_INT) {
|
1151 |
if ((env->cr[0] & CR0_PE_MASK)) { |
1152 |
static int count; |
1153 |
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, |
1154 |
count, intno, error_code, is_int, |
1155 |
env->hflags & HF_CPL_MASK, |
1156 |
env->segs[R_CS].selector, EIP, |
1157 |
(int)env->segs[R_CS].base + EIP,
|
1158 |
env->segs[R_SS].selector, ESP); |
1159 |
if (intno == 0x0e) { |
1160 |
fprintf(logfile, " CR2=" TARGET_FMT_lx, env->cr[2]); |
1161 |
} else {
|
1162 |
fprintf(logfile, " EAX=" TARGET_FMT_lx, EAX);
|
1163 |
} |
1164 |
fprintf(logfile, "\n");
|
1165 |
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP); |
1166 |
#if 0
|
1167 |
{
|
1168 |
int i;
|
1169 |
uint8_t *ptr;
|
1170 |
fprintf(logfile, " code=");
|
1171 |
ptr = env->segs[R_CS].base + env->eip;
|
1172 |
for(i = 0; i < 16; i++) {
|
1173 |
fprintf(logfile, " %02x", ldub(ptr + i));
|
1174 |
}
|
1175 |
fprintf(logfile, "\n");
|
1176 |
}
|
1177 |
#endif
|
1178 |
count++; |
1179 |
} |
1180 |
} |
1181 |
if (env->cr[0] & CR0_PE_MASK) { |
1182 |
#if TARGET_X86_64
|
1183 |
if (env->hflags & HF_LMA_MASK) {
|
1184 |
do_interrupt64(intno, is_int, error_code, next_eip, is_hw); |
1185 |
} else
|
1186 |
#endif
|
1187 |
{ |
1188 |
do_interrupt_protected(intno, is_int, error_code, next_eip, is_hw); |
1189 |
} |
1190 |
} else {
|
1191 |
do_interrupt_real(intno, is_int, error_code, next_eip); |
1192 |
} |
1193 |
} |
1194 |
|
1195 |
/*
|
1196 |
* Signal an interruption. It is executed in the main CPU loop.
|
1197 |
* is_int is TRUE if coming from the int instruction. next_eip is the
|
1198 |
* EIP value AFTER the interrupt instruction. It is only relevant if
|
1199 |
* is_int is TRUE.
|
1200 |
*/
|
1201 |
void raise_interrupt(int intno, int is_int, int error_code, |
1202 |
int next_eip_addend)
|
1203 |
{ |
1204 |
env->exception_index = intno; |
1205 |
env->error_code = error_code; |
1206 |
env->exception_is_int = is_int; |
1207 |
env->exception_next_eip = env->eip + next_eip_addend; |
1208 |
cpu_loop_exit(); |
1209 |
} |
1210 |
|
1211 |
/* same as raise_exception_err, but do not restore global registers */
|
1212 |
static void raise_exception_err_norestore(int exception_index, int error_code) |
1213 |
{ |
1214 |
env->exception_index = exception_index; |
1215 |
env->error_code = error_code; |
1216 |
env->exception_is_int = 0;
|
1217 |
env->exception_next_eip = 0;
|
1218 |
longjmp(env->jmp_env, 1);
|
1219 |
} |
1220 |
|
1221 |
/* shortcuts to generate exceptions */
|
1222 |
|
1223 |
void (raise_exception_err)(int exception_index, int error_code) |
1224 |
{ |
1225 |
raise_interrupt(exception_index, 0, error_code, 0); |
1226 |
} |
1227 |
|
1228 |
void raise_exception(int exception_index) |
1229 |
{ |
1230 |
raise_interrupt(exception_index, 0, 0, 0); |
1231 |
} |
1232 |
|
1233 |
/* SMM support */
|
1234 |
|
1235 |
#if defined(CONFIG_USER_ONLY)
|
1236 |
|
1237 |
void do_smm_enter(void) |
1238 |
{ |
1239 |
} |
1240 |
|
1241 |
void helper_rsm(void) |
1242 |
{ |
1243 |
} |
1244 |
|
1245 |
#else
|
1246 |
|
1247 |
#ifdef TARGET_X86_64
|
1248 |
#define SMM_REVISION_ID 0x00020064 |
1249 |
#else
|
1250 |
#define SMM_REVISION_ID 0x00020000 |
1251 |
#endif
|
1252 |
|
1253 |
void do_smm_enter(void) |
1254 |
{ |
1255 |
target_ulong sm_state; |
1256 |
SegmentCache *dt; |
1257 |
int i, offset;
|
1258 |
|
1259 |
if (loglevel & CPU_LOG_INT) {
|
1260 |
fprintf(logfile, "SMM: enter\n");
|
1261 |
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP); |
1262 |
} |
1263 |
|
1264 |
env->hflags |= HF_SMM_MASK; |
1265 |
cpu_smm_update(env); |
1266 |
|
1267 |
sm_state = env->smbase + 0x8000;
|
1268 |
|
1269 |
#ifdef TARGET_X86_64
|
1270 |
for(i = 0; i < 6; i++) { |
1271 |
dt = &env->segs[i]; |
1272 |
offset = 0x7e00 + i * 16; |
1273 |
stw_phys(sm_state + offset, dt->selector); |
1274 |
stw_phys(sm_state + offset + 2, (dt->flags >> 8) & 0xf0ff); |
1275 |
stl_phys(sm_state + offset + 4, dt->limit);
|
1276 |
stq_phys(sm_state + offset + 8, dt->base);
|
1277 |
} |
1278 |
|
1279 |
stq_phys(sm_state + 0x7e68, env->gdt.base);
|
1280 |
stl_phys(sm_state + 0x7e64, env->gdt.limit);
|
1281 |
|
1282 |
stw_phys(sm_state + 0x7e70, env->ldt.selector);
|
1283 |
stq_phys(sm_state + 0x7e78, env->ldt.base);
|
1284 |
stl_phys(sm_state + 0x7e74, env->ldt.limit);
|
1285 |
stw_phys(sm_state + 0x7e72, (env->ldt.flags >> 8) & 0xf0ff); |
1286 |
|
1287 |
stq_phys(sm_state + 0x7e88, env->idt.base);
|
1288 |
stl_phys(sm_state + 0x7e84, env->idt.limit);
|
1289 |
|
1290 |
stw_phys(sm_state + 0x7e90, env->tr.selector);
|
1291 |
stq_phys(sm_state + 0x7e98, env->tr.base);
|
1292 |
stl_phys(sm_state + 0x7e94, env->tr.limit);
|
1293 |
stw_phys(sm_state + 0x7e92, (env->tr.flags >> 8) & 0xf0ff); |
1294 |
|
1295 |
stq_phys(sm_state + 0x7ed0, env->efer);
|
1296 |
|
1297 |
stq_phys(sm_state + 0x7ff8, EAX);
|
1298 |
stq_phys(sm_state + 0x7ff0, ECX);
|
1299 |
stq_phys(sm_state + 0x7fe8, EDX);
|
1300 |
stq_phys(sm_state + 0x7fe0, EBX);
|
1301 |
stq_phys(sm_state + 0x7fd8, ESP);
|
1302 |
stq_phys(sm_state + 0x7fd0, EBP);
|
1303 |
stq_phys(sm_state + 0x7fc8, ESI);
|
1304 |
stq_phys(sm_state + 0x7fc0, EDI);
|
1305 |
for(i = 8; i < 16; i++) |
1306 |
stq_phys(sm_state + 0x7ff8 - i * 8, env->regs[i]); |
1307 |
stq_phys(sm_state + 0x7f78, env->eip);
|
1308 |
stl_phys(sm_state + 0x7f70, compute_eflags());
|
1309 |
stl_phys(sm_state + 0x7f68, env->dr[6]); |
1310 |
stl_phys(sm_state + 0x7f60, env->dr[7]); |
1311 |
|
1312 |
stl_phys(sm_state + 0x7f48, env->cr[4]); |
1313 |
stl_phys(sm_state + 0x7f50, env->cr[3]); |
1314 |
stl_phys(sm_state + 0x7f58, env->cr[0]); |
1315 |
|
1316 |
stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
|
1317 |
stl_phys(sm_state + 0x7f00, env->smbase);
|
1318 |
#else
|
1319 |
stl_phys(sm_state + 0x7ffc, env->cr[0]); |
1320 |
stl_phys(sm_state + 0x7ff8, env->cr[3]); |
1321 |
stl_phys(sm_state + 0x7ff4, compute_eflags());
|
1322 |
stl_phys(sm_state + 0x7ff0, env->eip);
|
1323 |
stl_phys(sm_state + 0x7fec, EDI);
|
1324 |
stl_phys(sm_state + 0x7fe8, ESI);
|
1325 |
stl_phys(sm_state + 0x7fe4, EBP);
|
1326 |
stl_phys(sm_state + 0x7fe0, ESP);
|
1327 |
stl_phys(sm_state + 0x7fdc, EBX);
|
1328 |
stl_phys(sm_state + 0x7fd8, EDX);
|
1329 |
stl_phys(sm_state + 0x7fd4, ECX);
|
1330 |
stl_phys(sm_state + 0x7fd0, EAX);
|
1331 |
stl_phys(sm_state + 0x7fcc, env->dr[6]); |
1332 |
stl_phys(sm_state + 0x7fc8, env->dr[7]); |
1333 |
|
1334 |
stl_phys(sm_state + 0x7fc4, env->tr.selector);
|
1335 |
stl_phys(sm_state + 0x7f64, env->tr.base);
|
1336 |
stl_phys(sm_state + 0x7f60, env->tr.limit);
|
1337 |
stl_phys(sm_state + 0x7f5c, (env->tr.flags >> 8) & 0xf0ff); |
1338 |
|
1339 |
stl_phys(sm_state + 0x7fc0, env->ldt.selector);
|
1340 |
stl_phys(sm_state + 0x7f80, env->ldt.base);
|
1341 |
stl_phys(sm_state + 0x7f7c, env->ldt.limit);
|
1342 |
stl_phys(sm_state + 0x7f78, (env->ldt.flags >> 8) & 0xf0ff); |
1343 |
|
1344 |
stl_phys(sm_state + 0x7f74, env->gdt.base);
|
1345 |
stl_phys(sm_state + 0x7f70, env->gdt.limit);
|
1346 |
|
1347 |
stl_phys(sm_state + 0x7f58, env->idt.base);
|
1348 |
stl_phys(sm_state + 0x7f54, env->idt.limit);
|
1349 |
|
1350 |
for(i = 0; i < 6; i++) { |
1351 |
dt = &env->segs[i]; |
1352 |
if (i < 3) |
1353 |
offset = 0x7f84 + i * 12; |
1354 |
else
|
1355 |
offset = 0x7f2c + (i - 3) * 12; |
1356 |
stl_phys(sm_state + 0x7fa8 + i * 4, dt->selector); |
1357 |
stl_phys(sm_state + offset + 8, dt->base);
|
1358 |
stl_phys(sm_state + offset + 4, dt->limit);
|
1359 |
stl_phys(sm_state + offset, (dt->flags >> 8) & 0xf0ff); |
1360 |
} |
1361 |
stl_phys(sm_state + 0x7f14, env->cr[4]); |
1362 |
|
1363 |
stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
|
1364 |
stl_phys(sm_state + 0x7ef8, env->smbase);
|
1365 |
#endif
|
1366 |
/* init SMM cpu state */
|
1367 |
|
1368 |
#ifdef TARGET_X86_64
|
1369 |
env->efer = 0;
|
1370 |
env->hflags &= ~HF_LMA_MASK; |
1371 |
#endif
|
1372 |
load_eflags(0, ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
|
1373 |
env->eip = 0x00008000;
|
1374 |
cpu_x86_load_seg_cache(env, R_CS, (env->smbase >> 4) & 0xffff, env->smbase, |
1375 |
0xffffffff, 0); |
1376 |
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffffffff, 0); |
1377 |
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffffffff, 0); |
1378 |
cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffffffff, 0); |
1379 |
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffffffff, 0); |
1380 |
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffffffff, 0); |
1381 |
|
1382 |
cpu_x86_update_cr0(env, |
1383 |
env->cr[0] & ~(CR0_PE_MASK | CR0_EM_MASK | CR0_TS_MASK | CR0_PG_MASK));
|
1384 |
cpu_x86_update_cr4(env, 0);
|
1385 |
env->dr[7] = 0x00000400; |
1386 |
CC_OP = CC_OP_EFLAGS; |
1387 |
} |
1388 |
|
1389 |
void helper_rsm(void) |
1390 |
{ |
1391 |
target_ulong sm_state; |
1392 |
int i, offset;
|
1393 |
uint32_t val; |
1394 |
|
1395 |
sm_state = env->smbase + 0x8000;
|
1396 |
#ifdef TARGET_X86_64
|
1397 |
env->efer = ldq_phys(sm_state + 0x7ed0);
|
1398 |
if (env->efer & MSR_EFER_LMA)
|
1399 |
env->hflags |= HF_LMA_MASK; |
1400 |
else
|
1401 |
env->hflags &= ~HF_LMA_MASK; |
1402 |
|
1403 |
for(i = 0; i < 6; i++) { |
1404 |
offset = 0x7e00 + i * 16; |
1405 |
cpu_x86_load_seg_cache(env, i, |
1406 |
lduw_phys(sm_state + offset), |
1407 |
ldq_phys(sm_state + offset + 8),
|
1408 |
ldl_phys(sm_state + offset + 4),
|
1409 |
(lduw_phys(sm_state + offset + 2) & 0xf0ff) << 8); |
1410 |
} |
1411 |
|
1412 |
env->gdt.base = ldq_phys(sm_state + 0x7e68);
|
1413 |
env->gdt.limit = ldl_phys(sm_state + 0x7e64);
|
1414 |
|
1415 |
env->ldt.selector = lduw_phys(sm_state + 0x7e70);
|
1416 |
env->ldt.base = ldq_phys(sm_state + 0x7e78);
|
1417 |
env->ldt.limit = ldl_phys(sm_state + 0x7e74);
|
1418 |
env->ldt.flags = (lduw_phys(sm_state + 0x7e72) & 0xf0ff) << 8; |
1419 |
|
1420 |
env->idt.base = ldq_phys(sm_state + 0x7e88);
|
1421 |
env->idt.limit = ldl_phys(sm_state + 0x7e84);
|
1422 |
|
1423 |
env->tr.selector = lduw_phys(sm_state + 0x7e90);
|
1424 |
env->tr.base = ldq_phys(sm_state + 0x7e98);
|
1425 |
env->tr.limit = ldl_phys(sm_state + 0x7e94);
|
1426 |
env->tr.flags = (lduw_phys(sm_state + 0x7e92) & 0xf0ff) << 8; |
1427 |
|
1428 |
EAX = ldq_phys(sm_state + 0x7ff8);
|
1429 |
ECX = ldq_phys(sm_state + 0x7ff0);
|
1430 |
EDX = ldq_phys(sm_state + 0x7fe8);
|
1431 |
EBX = ldq_phys(sm_state + 0x7fe0);
|
1432 |
ESP = ldq_phys(sm_state + 0x7fd8);
|
1433 |
EBP = ldq_phys(sm_state + 0x7fd0);
|
1434 |
ESI = ldq_phys(sm_state + 0x7fc8);
|
1435 |
EDI = ldq_phys(sm_state + 0x7fc0);
|
1436 |
for(i = 8; i < 16; i++) |
1437 |
env->regs[i] = ldq_phys(sm_state + 0x7ff8 - i * 8); |
1438 |
env->eip = ldq_phys(sm_state + 0x7f78);
|
1439 |
load_eflags(ldl_phys(sm_state + 0x7f70),
|
1440 |
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)); |
1441 |
env->dr[6] = ldl_phys(sm_state + 0x7f68); |
1442 |
env->dr[7] = ldl_phys(sm_state + 0x7f60); |
1443 |
|
1444 |
cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f48));
|
1445 |
cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7f50));
|
1446 |
cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7f58));
|
1447 |
|
1448 |
val = ldl_phys(sm_state + 0x7efc); /* revision ID */ |
1449 |
if (val & 0x20000) { |
1450 |
env->smbase = ldl_phys(sm_state + 0x7f00) & ~0x7fff; |
1451 |
} |
1452 |
#else
|
1453 |
cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7ffc));
|
1454 |
cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7ff8));
|
1455 |
load_eflags(ldl_phys(sm_state + 0x7ff4),
|
1456 |
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)); |
1457 |
env->eip = ldl_phys(sm_state + 0x7ff0);
|
1458 |
EDI = ldl_phys(sm_state + 0x7fec);
|
1459 |
ESI = ldl_phys(sm_state + 0x7fe8);
|
1460 |
EBP = ldl_phys(sm_state + 0x7fe4);
|
1461 |
ESP = ldl_phys(sm_state + 0x7fe0);
|
1462 |
EBX = ldl_phys(sm_state + 0x7fdc);
|
1463 |
EDX = ldl_phys(sm_state + 0x7fd8);
|
1464 |
ECX = ldl_phys(sm_state + 0x7fd4);
|
1465 |
EAX = ldl_phys(sm_state + 0x7fd0);
|
1466 |
env->dr[6] = ldl_phys(sm_state + 0x7fcc); |
1467 |
env->dr[7] = ldl_phys(sm_state + 0x7fc8); |
1468 |
|
1469 |
env->tr.selector = ldl_phys(sm_state + 0x7fc4) & 0xffff; |
1470 |
env->tr.base = ldl_phys(sm_state + 0x7f64);
|
1471 |
env->tr.limit = ldl_phys(sm_state + 0x7f60);
|
1472 |
env->tr.flags = (ldl_phys(sm_state + 0x7f5c) & 0xf0ff) << 8; |
1473 |
|
1474 |
env->ldt.selector = ldl_phys(sm_state + 0x7fc0) & 0xffff; |
1475 |
env->ldt.base = ldl_phys(sm_state + 0x7f80);
|
1476 |
env->ldt.limit = ldl_phys(sm_state + 0x7f7c);
|
1477 |
env->ldt.flags = (ldl_phys(sm_state + 0x7f78) & 0xf0ff) << 8; |
1478 |
|
1479 |
env->gdt.base = ldl_phys(sm_state + 0x7f74);
|
1480 |
env->gdt.limit = ldl_phys(sm_state + 0x7f70);
|
1481 |
|
1482 |
env->idt.base = ldl_phys(sm_state + 0x7f58);
|
1483 |
env->idt.limit = ldl_phys(sm_state + 0x7f54);
|
1484 |
|
1485 |
for(i = 0; i < 6; i++) { |
1486 |
if (i < 3) |
1487 |
offset = 0x7f84 + i * 12; |
1488 |
else
|
1489 |
offset = 0x7f2c + (i - 3) * 12; |
1490 |
cpu_x86_load_seg_cache(env, i, |
1491 |
ldl_phys(sm_state + 0x7fa8 + i * 4) & 0xffff, |
1492 |
ldl_phys(sm_state + offset + 8),
|
1493 |
ldl_phys(sm_state + offset + 4),
|
1494 |
(ldl_phys(sm_state + offset) & 0xf0ff) << 8); |
1495 |
} |
1496 |
cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f14));
|
1497 |
|
1498 |
val = ldl_phys(sm_state + 0x7efc); /* revision ID */ |
1499 |
if (val & 0x20000) { |
1500 |
env->smbase = ldl_phys(sm_state + 0x7ef8) & ~0x7fff; |
1501 |
} |
1502 |
#endif
|
1503 |
CC_OP = CC_OP_EFLAGS; |
1504 |
env->hflags &= ~HF_SMM_MASK; |
1505 |
cpu_smm_update(env); |
1506 |
|
1507 |
if (loglevel & CPU_LOG_INT) {
|
1508 |
fprintf(logfile, "SMM: after RSM\n");
|
1509 |
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP); |
1510 |
} |
1511 |
} |
1512 |
|
1513 |
#endif /* !CONFIG_USER_ONLY */ |
1514 |
|
1515 |
|
1516 |
#ifdef BUGGY_GCC_DIV64
|
1517 |
/* gcc 2.95.4 on PowerPC does not seem to like using __udivdi3, so we
|
1518 |
call it from another function */
|
1519 |
uint32_t div32(uint64_t *q_ptr, uint64_t num, uint32_t den) |
1520 |
{ |
1521 |
*q_ptr = num / den; |
1522 |
return num % den;
|
1523 |
} |
1524 |
|
1525 |
int32_t idiv32(int64_t *q_ptr, int64_t num, int32_t den) |
1526 |
{ |
1527 |
*q_ptr = num / den; |
1528 |
return num % den;
|
1529 |
} |
1530 |
#endif
|
1531 |
|
1532 |
void helper_divl_EAX_T0(void) |
1533 |
{ |
1534 |
unsigned int den, r; |
1535 |
uint64_t num, q; |
1536 |
|
1537 |
num = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
1538 |
den = T0; |
1539 |
if (den == 0) { |
1540 |
raise_exception(EXCP00_DIVZ); |
1541 |
} |
1542 |
#ifdef BUGGY_GCC_DIV64
|
1543 |
r = div32(&q, num, den); |
1544 |
#else
|
1545 |
q = (num / den); |
1546 |
r = (num % den); |
1547 |
#endif
|
1548 |
if (q > 0xffffffff) |
1549 |
raise_exception(EXCP00_DIVZ); |
1550 |
EAX = (uint32_t)q; |
1551 |
EDX = (uint32_t)r; |
1552 |
} |
1553 |
|
1554 |
void helper_idivl_EAX_T0(void) |
1555 |
{ |
1556 |
int den, r;
|
1557 |
int64_t num, q; |
1558 |
|
1559 |
num = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
1560 |
den = T0; |
1561 |
if (den == 0) { |
1562 |
raise_exception(EXCP00_DIVZ); |
1563 |
} |
1564 |
#ifdef BUGGY_GCC_DIV64
|
1565 |
r = idiv32(&q, num, den); |
1566 |
#else
|
1567 |
q = (num / den); |
1568 |
r = (num % den); |
1569 |
#endif
|
1570 |
if (q != (int32_t)q)
|
1571 |
raise_exception(EXCP00_DIVZ); |
1572 |
EAX = (uint32_t)q; |
1573 |
EDX = (uint32_t)r; |
1574 |
} |
1575 |
|
1576 |
void helper_cmpxchg8b(void) |
1577 |
{ |
1578 |
uint64_t d; |
1579 |
int eflags;
|
1580 |
|
1581 |
eflags = cc_table[CC_OP].compute_all(); |
1582 |
d = ldq(A0); |
1583 |
if (d == (((uint64_t)EDX << 32) | EAX)) { |
1584 |
stq(A0, ((uint64_t)ECX << 32) | EBX);
|
1585 |
eflags |= CC_Z; |
1586 |
} else {
|
1587 |
EDX = d >> 32;
|
1588 |
EAX = d; |
1589 |
eflags &= ~CC_Z; |
1590 |
} |
1591 |
CC_SRC = eflags; |
1592 |
} |
1593 |
|
1594 |
void helper_cpuid(void) |
1595 |
{ |
1596 |
uint32_t index; |
1597 |
index = (uint32_t)EAX; |
1598 |
|
1599 |
/* test if maximum index reached */
|
1600 |
if (index & 0x80000000) { |
1601 |
if (index > env->cpuid_xlevel)
|
1602 |
index = env->cpuid_level; |
1603 |
} else {
|
1604 |
if (index > env->cpuid_level)
|
1605 |
index = env->cpuid_level; |
1606 |
} |
1607 |
|
1608 |
switch(index) {
|
1609 |
case 0: |
1610 |
EAX = env->cpuid_level; |
1611 |
EBX = env->cpuid_vendor1; |
1612 |
EDX = env->cpuid_vendor2; |
1613 |
ECX = env->cpuid_vendor3; |
1614 |
break;
|
1615 |
case 1: |
1616 |
EAX = env->cpuid_version; |
1617 |
EBX = 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */ |
1618 |
ECX = env->cpuid_ext_features; |
1619 |
EDX = env->cpuid_features; |
1620 |
break;
|
1621 |
case 2: |
1622 |
/* cache info: needed for Pentium Pro compatibility */
|
1623 |
EAX = 0x410601;
|
1624 |
EBX = 0;
|
1625 |
ECX = 0;
|
1626 |
EDX = 0;
|
1627 |
break;
|
1628 |
case 0x80000000: |
1629 |
EAX = env->cpuid_xlevel; |
1630 |
EBX = env->cpuid_vendor1; |
1631 |
EDX = env->cpuid_vendor2; |
1632 |
ECX = env->cpuid_vendor3; |
1633 |
break;
|
1634 |
case 0x80000001: |
1635 |
EAX = env->cpuid_features; |
1636 |
EBX = 0;
|
1637 |
ECX = 0;
|
1638 |
EDX = env->cpuid_ext2_features; |
1639 |
break;
|
1640 |
case 0x80000002: |
1641 |
case 0x80000003: |
1642 |
case 0x80000004: |
1643 |
EAX = env->cpuid_model[(index - 0x80000002) * 4 + 0]; |
1644 |
EBX = env->cpuid_model[(index - 0x80000002) * 4 + 1]; |
1645 |
ECX = env->cpuid_model[(index - 0x80000002) * 4 + 2]; |
1646 |
EDX = env->cpuid_model[(index - 0x80000002) * 4 + 3]; |
1647 |
break;
|
1648 |
case 0x80000005: |
1649 |
/* cache info (L1 cache) */
|
1650 |
EAX = 0x01ff01ff;
|
1651 |
EBX = 0x01ff01ff;
|
1652 |
ECX = 0x40020140;
|
1653 |
EDX = 0x40020140;
|
1654 |
break;
|
1655 |
case 0x80000006: |
1656 |
/* cache info (L2 cache) */
|
1657 |
EAX = 0;
|
1658 |
EBX = 0x42004200;
|
1659 |
ECX = 0x02008140;
|
1660 |
EDX = 0;
|
1661 |
break;
|
1662 |
case 0x80000008: |
1663 |
/* virtual & phys address size in low 2 bytes. */
|
1664 |
EAX = 0x00003028;
|
1665 |
EBX = 0;
|
1666 |
ECX = 0;
|
1667 |
EDX = 0;
|
1668 |
break;
|
1669 |
default:
|
1670 |
/* reserved values: zero */
|
1671 |
EAX = 0;
|
1672 |
EBX = 0;
|
1673 |
ECX = 0;
|
1674 |
EDX = 0;
|
1675 |
break;
|
1676 |
} |
1677 |
} |
1678 |
|
1679 |
void helper_enter_level(int level, int data32) |
1680 |
{ |
1681 |
target_ulong ssp; |
1682 |
uint32_t esp_mask, esp, ebp; |
1683 |
|
1684 |
esp_mask = get_sp_mask(env->segs[R_SS].flags); |
1685 |
ssp = env->segs[R_SS].base; |
1686 |
ebp = EBP; |
1687 |
esp = ESP; |
1688 |
if (data32) {
|
1689 |
/* 32 bit */
|
1690 |
esp -= 4;
|
1691 |
while (--level) {
|
1692 |
esp -= 4;
|
1693 |
ebp -= 4;
|
1694 |
stl(ssp + (esp & esp_mask), ldl(ssp + (ebp & esp_mask))); |
1695 |
} |
1696 |
esp -= 4;
|
1697 |
stl(ssp + (esp & esp_mask), T1); |
1698 |
} else {
|
1699 |
/* 16 bit */
|
1700 |
esp -= 2;
|
1701 |
while (--level) {
|
1702 |
esp -= 2;
|
1703 |
ebp -= 2;
|
1704 |
stw(ssp + (esp & esp_mask), lduw(ssp + (ebp & esp_mask))); |
1705 |
} |
1706 |
esp -= 2;
|
1707 |
stw(ssp + (esp & esp_mask), T1); |
1708 |
} |
1709 |
} |
1710 |
|
1711 |
#ifdef TARGET_X86_64
|
1712 |
void helper_enter64_level(int level, int data64) |
1713 |
{ |
1714 |
target_ulong esp, ebp; |
1715 |
ebp = EBP; |
1716 |
esp = ESP; |
1717 |
|
1718 |
if (data64) {
|
1719 |
/* 64 bit */
|
1720 |
esp -= 8;
|
1721 |
while (--level) {
|
1722 |
esp -= 8;
|
1723 |
ebp -= 8;
|
1724 |
stq(esp, ldq(ebp)); |
1725 |
} |
1726 |
esp -= 8;
|
1727 |
stq(esp, T1); |
1728 |
} else {
|
1729 |
/* 16 bit */
|
1730 |
esp -= 2;
|
1731 |
while (--level) {
|
1732 |
esp -= 2;
|
1733 |
ebp -= 2;
|
1734 |
stw(esp, lduw(ebp)); |
1735 |
} |
1736 |
esp -= 2;
|
1737 |
stw(esp, T1); |
1738 |
} |
1739 |
} |
1740 |
#endif
|
1741 |
|
1742 |
void helper_lldt_T0(void) |
1743 |
{ |
1744 |
int selector;
|
1745 |
SegmentCache *dt; |
1746 |
uint32_t e1, e2; |
1747 |
int index, entry_limit;
|
1748 |
target_ulong ptr; |
1749 |
|
1750 |
selector = T0 & 0xffff;
|
1751 |
if ((selector & 0xfffc) == 0) { |
1752 |
/* XXX: NULL selector case: invalid LDT */
|
1753 |
env->ldt.base = 0;
|
1754 |
env->ldt.limit = 0;
|
1755 |
} else {
|
1756 |
if (selector & 0x4) |
1757 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
1758 |
dt = &env->gdt; |
1759 |
index = selector & ~7;
|
1760 |
#ifdef TARGET_X86_64
|
1761 |
if (env->hflags & HF_LMA_MASK)
|
1762 |
entry_limit = 15;
|
1763 |
else
|
1764 |
#endif
|
1765 |
entry_limit = 7;
|
1766 |
if ((index + entry_limit) > dt->limit)
|
1767 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
1768 |
ptr = dt->base + index; |
1769 |
e1 = ldl_kernel(ptr); |
1770 |
e2 = ldl_kernel(ptr + 4);
|
1771 |
if ((e2 & DESC_S_MASK) || ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2) |
1772 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
1773 |
if (!(e2 & DESC_P_MASK))
|
1774 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
1775 |
#ifdef TARGET_X86_64
|
1776 |
if (env->hflags & HF_LMA_MASK) {
|
1777 |
uint32_t e3; |
1778 |
e3 = ldl_kernel(ptr + 8);
|
1779 |
load_seg_cache_raw_dt(&env->ldt, e1, e2); |
1780 |
env->ldt.base |= (target_ulong)e3 << 32;
|
1781 |
} else
|
1782 |
#endif
|
1783 |
{ |
1784 |
load_seg_cache_raw_dt(&env->ldt, e1, e2); |
1785 |
} |
1786 |
} |
1787 |
env->ldt.selector = selector; |
1788 |
} |
1789 |
|
1790 |
void helper_ltr_T0(void) |
1791 |
{ |
1792 |
int selector;
|
1793 |
SegmentCache *dt; |
1794 |
uint32_t e1, e2; |
1795 |
int index, type, entry_limit;
|
1796 |
target_ulong ptr; |
1797 |
|
1798 |
selector = T0 & 0xffff;
|
1799 |
if ((selector & 0xfffc) == 0) { |
1800 |
/* NULL selector case: invalid TR */
|
1801 |
env->tr.base = 0;
|
1802 |
env->tr.limit = 0;
|
1803 |
env->tr.flags = 0;
|
1804 |
} else {
|
1805 |
if (selector & 0x4) |
1806 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
1807 |
dt = &env->gdt; |
1808 |
index = selector & ~7;
|
1809 |
#ifdef TARGET_X86_64
|
1810 |
if (env->hflags & HF_LMA_MASK)
|
1811 |
entry_limit = 15;
|
1812 |
else
|
1813 |
#endif
|
1814 |
entry_limit = 7;
|
1815 |
if ((index + entry_limit) > dt->limit)
|
1816 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
1817 |
ptr = dt->base + index; |
1818 |
e1 = ldl_kernel(ptr); |
1819 |
e2 = ldl_kernel(ptr + 4);
|
1820 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
1821 |
if ((e2 & DESC_S_MASK) ||
|
1822 |
(type != 1 && type != 9)) |
1823 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
1824 |
if (!(e2 & DESC_P_MASK))
|
1825 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
1826 |
#ifdef TARGET_X86_64
|
1827 |
if (env->hflags & HF_LMA_MASK) {
|
1828 |
uint32_t e3; |
1829 |
e3 = ldl_kernel(ptr + 8);
|
1830 |
load_seg_cache_raw_dt(&env->tr, e1, e2); |
1831 |
env->tr.base |= (target_ulong)e3 << 32;
|
1832 |
} else
|
1833 |
#endif
|
1834 |
{ |
1835 |
load_seg_cache_raw_dt(&env->tr, e1, e2); |
1836 |
} |
1837 |
e2 |= DESC_TSS_BUSY_MASK; |
1838 |
stl_kernel(ptr + 4, e2);
|
1839 |
} |
1840 |
env->tr.selector = selector; |
1841 |
} |
1842 |
|
1843 |
/* only works if protected mode and not VM86. seg_reg must be != R_CS */
|
1844 |
void load_seg(int seg_reg, int selector) |
1845 |
{ |
1846 |
uint32_t e1, e2; |
1847 |
int cpl, dpl, rpl;
|
1848 |
SegmentCache *dt; |
1849 |
int index;
|
1850 |
target_ulong ptr; |
1851 |
|
1852 |
selector &= 0xffff;
|
1853 |
cpl = env->hflags & HF_CPL_MASK; |
1854 |
if ((selector & 0xfffc) == 0) { |
1855 |
/* null selector case */
|
1856 |
if (seg_reg == R_SS
|
1857 |
#ifdef TARGET_X86_64
|
1858 |
&& (!(env->hflags & HF_CS64_MASK) || cpl == 3)
|
1859 |
#endif
|
1860 |
) |
1861 |
raise_exception_err(EXCP0D_GPF, 0);
|
1862 |
cpu_x86_load_seg_cache(env, seg_reg, selector, 0, 0, 0); |
1863 |
} else {
|
1864 |
|
1865 |
if (selector & 0x4) |
1866 |
dt = &env->ldt; |
1867 |
else
|
1868 |
dt = &env->gdt; |
1869 |
index = selector & ~7;
|
1870 |
if ((index + 7) > dt->limit) |
1871 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
1872 |
ptr = dt->base + index; |
1873 |
e1 = ldl_kernel(ptr); |
1874 |
e2 = ldl_kernel(ptr + 4);
|
1875 |
|
1876 |
if (!(e2 & DESC_S_MASK))
|
1877 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
1878 |
rpl = selector & 3;
|
1879 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
1880 |
if (seg_reg == R_SS) {
|
1881 |
/* must be writable segment */
|
1882 |
if ((e2 & DESC_CS_MASK) || !(e2 & DESC_W_MASK))
|
1883 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
1884 |
if (rpl != cpl || dpl != cpl)
|
1885 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
1886 |
} else {
|
1887 |
/* must be readable segment */
|
1888 |
if ((e2 & (DESC_CS_MASK | DESC_R_MASK)) == DESC_CS_MASK)
|
1889 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
1890 |
|
1891 |
if (!(e2 & DESC_CS_MASK) || !(e2 & DESC_C_MASK)) {
|
1892 |
/* if not conforming code, test rights */
|
1893 |
if (dpl < cpl || dpl < rpl)
|
1894 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
1895 |
} |
1896 |
} |
1897 |
|
1898 |
if (!(e2 & DESC_P_MASK)) {
|
1899 |
if (seg_reg == R_SS)
|
1900 |
raise_exception_err(EXCP0C_STACK, selector & 0xfffc);
|
1901 |
else
|
1902 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
1903 |
} |
1904 |
|
1905 |
/* set the access bit if not already set */
|
1906 |
if (!(e2 & DESC_A_MASK)) {
|
1907 |
e2 |= DESC_A_MASK; |
1908 |
stl_kernel(ptr + 4, e2);
|
1909 |
} |
1910 |
|
1911 |
cpu_x86_load_seg_cache(env, seg_reg, selector, |
1912 |
get_seg_base(e1, e2), |
1913 |
get_seg_limit(e1, e2), |
1914 |
e2); |
1915 |
#if 0
|
1916 |
fprintf(logfile, "load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx flags=%08x\n",
|
1917 |
selector, (unsigned long)sc->base, sc->limit, sc->flags);
|
1918 |
#endif
|
1919 |
} |
1920 |
} |
1921 |
|
1922 |
/* protected mode jump */
|
1923 |
void helper_ljmp_protected_T0_T1(int next_eip_addend) |
1924 |
{ |
1925 |
int new_cs, gate_cs, type;
|
1926 |
uint32_t e1, e2, cpl, dpl, rpl, limit; |
1927 |
target_ulong new_eip, next_eip; |
1928 |
|
1929 |
new_cs = T0; |
1930 |
new_eip = T1; |
1931 |
if ((new_cs & 0xfffc) == 0) |
1932 |
raise_exception_err(EXCP0D_GPF, 0);
|
1933 |
if (load_segment(&e1, &e2, new_cs) != 0) |
1934 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
1935 |
cpl = env->hflags & HF_CPL_MASK; |
1936 |
if (e2 & DESC_S_MASK) {
|
1937 |
if (!(e2 & DESC_CS_MASK))
|
1938 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
1939 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
1940 |
if (e2 & DESC_C_MASK) {
|
1941 |
/* conforming code segment */
|
1942 |
if (dpl > cpl)
|
1943 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
1944 |
} else {
|
1945 |
/* non conforming code segment */
|
1946 |
rpl = new_cs & 3;
|
1947 |
if (rpl > cpl)
|
1948 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
1949 |
if (dpl != cpl)
|
1950 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
1951 |
} |
1952 |
if (!(e2 & DESC_P_MASK))
|
1953 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
1954 |
limit = get_seg_limit(e1, e2); |
1955 |
if (new_eip > limit &&
|
1956 |
!(env->hflags & HF_LMA_MASK) && !(e2 & DESC_L_MASK)) |
1957 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
1958 |
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
1959 |
get_seg_base(e1, e2), limit, e2); |
1960 |
EIP = new_eip; |
1961 |
} else {
|
1962 |
/* jump to call or task gate */
|
1963 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
1964 |
rpl = new_cs & 3;
|
1965 |
cpl = env->hflags & HF_CPL_MASK; |
1966 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
1967 |
switch(type) {
|
1968 |
case 1: /* 286 TSS */ |
1969 |
case 9: /* 386 TSS */ |
1970 |
case 5: /* task gate */ |
1971 |
if (dpl < cpl || dpl < rpl)
|
1972 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
1973 |
next_eip = env->eip + next_eip_addend; |
1974 |
switch_tss(new_cs, e1, e2, SWITCH_TSS_JMP, next_eip); |
1975 |
CC_OP = CC_OP_EFLAGS; |
1976 |
break;
|
1977 |
case 4: /* 286 call gate */ |
1978 |
case 12: /* 386 call gate */ |
1979 |
if ((dpl < cpl) || (dpl < rpl))
|
1980 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
1981 |
if (!(e2 & DESC_P_MASK))
|
1982 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
1983 |
gate_cs = e1 >> 16;
|
1984 |
new_eip = (e1 & 0xffff);
|
1985 |
if (type == 12) |
1986 |
new_eip |= (e2 & 0xffff0000);
|
1987 |
if (load_segment(&e1, &e2, gate_cs) != 0) |
1988 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
1989 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
1990 |
/* must be code segment */
|
1991 |
if (((e2 & (DESC_S_MASK | DESC_CS_MASK)) !=
|
1992 |
(DESC_S_MASK | DESC_CS_MASK))) |
1993 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
1994 |
if (((e2 & DESC_C_MASK) && (dpl > cpl)) ||
|
1995 |
(!(e2 & DESC_C_MASK) && (dpl != cpl))) |
1996 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
1997 |
if (!(e2 & DESC_P_MASK))
|
1998 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
1999 |
limit = get_seg_limit(e1, e2); |
2000 |
if (new_eip > limit)
|
2001 |
raise_exception_err(EXCP0D_GPF, 0);
|
2002 |
cpu_x86_load_seg_cache(env, R_CS, (gate_cs & 0xfffc) | cpl,
|
2003 |
get_seg_base(e1, e2), limit, e2); |
2004 |
EIP = new_eip; |
2005 |
break;
|
2006 |
default:
|
2007 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2008 |
break;
|
2009 |
} |
2010 |
} |
2011 |
} |
2012 |
|
2013 |
/* real mode call */
|
2014 |
void helper_lcall_real_T0_T1(int shift, int next_eip) |
2015 |
{ |
2016 |
int new_cs, new_eip;
|
2017 |
uint32_t esp, esp_mask; |
2018 |
target_ulong ssp; |
2019 |
|
2020 |
new_cs = T0; |
2021 |
new_eip = T1; |
2022 |
esp = ESP; |
2023 |
esp_mask = get_sp_mask(env->segs[R_SS].flags); |
2024 |
ssp = env->segs[R_SS].base; |
2025 |
if (shift) {
|
2026 |
PUSHL(ssp, esp, esp_mask, env->segs[R_CS].selector); |
2027 |
PUSHL(ssp, esp, esp_mask, next_eip); |
2028 |
} else {
|
2029 |
PUSHW(ssp, esp, esp_mask, env->segs[R_CS].selector); |
2030 |
PUSHW(ssp, esp, esp_mask, next_eip); |
2031 |
} |
2032 |
|
2033 |
SET_ESP(esp, esp_mask); |
2034 |
env->eip = new_eip; |
2035 |
env->segs[R_CS].selector = new_cs; |
2036 |
env->segs[R_CS].base = (new_cs << 4);
|
2037 |
} |
2038 |
|
2039 |
/* protected mode call */
|
2040 |
void helper_lcall_protected_T0_T1(int shift, int next_eip_addend) |
2041 |
{ |
2042 |
int new_cs, new_stack, i;
|
2043 |
uint32_t e1, e2, cpl, dpl, rpl, selector, offset, param_count; |
2044 |
uint32_t ss, ss_e1, ss_e2, sp, type, ss_dpl, sp_mask; |
2045 |
uint32_t val, limit, old_sp_mask; |
2046 |
target_ulong ssp, old_ssp, next_eip, new_eip; |
2047 |
|
2048 |
new_cs = T0; |
2049 |
new_eip = T1; |
2050 |
next_eip = env->eip + next_eip_addend; |
2051 |
#ifdef DEBUG_PCALL
|
2052 |
if (loglevel & CPU_LOG_PCALL) {
|
2053 |
fprintf(logfile, "lcall %04x:%08x s=%d\n",
|
2054 |
new_cs, (uint32_t)new_eip, shift); |
2055 |
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP); |
2056 |
} |
2057 |
#endif
|
2058 |
if ((new_cs & 0xfffc) == 0) |
2059 |
raise_exception_err(EXCP0D_GPF, 0);
|
2060 |
if (load_segment(&e1, &e2, new_cs) != 0) |
2061 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2062 |
cpl = env->hflags & HF_CPL_MASK; |
2063 |
#ifdef DEBUG_PCALL
|
2064 |
if (loglevel & CPU_LOG_PCALL) {
|
2065 |
fprintf(logfile, "desc=%08x:%08x\n", e1, e2);
|
2066 |
} |
2067 |
#endif
|
2068 |
if (e2 & DESC_S_MASK) {
|
2069 |
if (!(e2 & DESC_CS_MASK))
|
2070 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2071 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2072 |
if (e2 & DESC_C_MASK) {
|
2073 |
/* conforming code segment */
|
2074 |
if (dpl > cpl)
|
2075 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2076 |
} else {
|
2077 |
/* non conforming code segment */
|
2078 |
rpl = new_cs & 3;
|
2079 |
if (rpl > cpl)
|
2080 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2081 |
if (dpl != cpl)
|
2082 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2083 |
} |
2084 |
if (!(e2 & DESC_P_MASK))
|
2085 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
2086 |
|
2087 |
#ifdef TARGET_X86_64
|
2088 |
/* XXX: check 16/32 bit cases in long mode */
|
2089 |
if (shift == 2) { |
2090 |
target_ulong rsp; |
2091 |
/* 64 bit case */
|
2092 |
rsp = ESP; |
2093 |
PUSHQ(rsp, env->segs[R_CS].selector); |
2094 |
PUSHQ(rsp, next_eip); |
2095 |
/* from this point, not restartable */
|
2096 |
ESP = rsp; |
2097 |
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
2098 |
get_seg_base(e1, e2), |
2099 |
get_seg_limit(e1, e2), e2); |
2100 |
EIP = new_eip; |
2101 |
} else
|
2102 |
#endif
|
2103 |
{ |
2104 |
sp = ESP; |
2105 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
2106 |
ssp = env->segs[R_SS].base; |
2107 |
if (shift) {
|
2108 |
PUSHL(ssp, sp, sp_mask, env->segs[R_CS].selector); |
2109 |
PUSHL(ssp, sp, sp_mask, next_eip); |
2110 |
} else {
|
2111 |
PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector); |
2112 |
PUSHW(ssp, sp, sp_mask, next_eip); |
2113 |
} |
2114 |
|
2115 |
limit = get_seg_limit(e1, e2); |
2116 |
if (new_eip > limit)
|
2117 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2118 |
/* from this point, not restartable */
|
2119 |
SET_ESP(sp, sp_mask); |
2120 |
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
2121 |
get_seg_base(e1, e2), limit, e2); |
2122 |
EIP = new_eip; |
2123 |
} |
2124 |
} else {
|
2125 |
/* check gate type */
|
2126 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
2127 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2128 |
rpl = new_cs & 3;
|
2129 |
switch(type) {
|
2130 |
case 1: /* available 286 TSS */ |
2131 |
case 9: /* available 386 TSS */ |
2132 |
case 5: /* task gate */ |
2133 |
if (dpl < cpl || dpl < rpl)
|
2134 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2135 |
switch_tss(new_cs, e1, e2, SWITCH_TSS_CALL, next_eip); |
2136 |
CC_OP = CC_OP_EFLAGS; |
2137 |
return;
|
2138 |
case 4: /* 286 call gate */ |
2139 |
case 12: /* 386 call gate */ |
2140 |
break;
|
2141 |
default:
|
2142 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2143 |
break;
|
2144 |
} |
2145 |
shift = type >> 3;
|
2146 |
|
2147 |
if (dpl < cpl || dpl < rpl)
|
2148 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2149 |
/* check valid bit */
|
2150 |
if (!(e2 & DESC_P_MASK))
|
2151 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
2152 |
selector = e1 >> 16;
|
2153 |
offset = (e2 & 0xffff0000) | (e1 & 0x0000ffff); |
2154 |
param_count = e2 & 0x1f;
|
2155 |
if ((selector & 0xfffc) == 0) |
2156 |
raise_exception_err(EXCP0D_GPF, 0);
|
2157 |
|
2158 |
if (load_segment(&e1, &e2, selector) != 0) |
2159 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2160 |
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
2161 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2162 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2163 |
if (dpl > cpl)
|
2164 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2165 |
if (!(e2 & DESC_P_MASK))
|
2166 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
2167 |
|
2168 |
if (!(e2 & DESC_C_MASK) && dpl < cpl) {
|
2169 |
/* to inner priviledge */
|
2170 |
get_ss_esp_from_tss(&ss, &sp, dpl); |
2171 |
#ifdef DEBUG_PCALL
|
2172 |
if (loglevel & CPU_LOG_PCALL)
|
2173 |
fprintf(logfile, "new ss:esp=%04x:%08x param_count=%d ESP=" TARGET_FMT_lx "\n", |
2174 |
ss, sp, param_count, ESP); |
2175 |
#endif
|
2176 |
if ((ss & 0xfffc) == 0) |
2177 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2178 |
if ((ss & 3) != dpl) |
2179 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2180 |
if (load_segment(&ss_e1, &ss_e2, ss) != 0) |
2181 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2182 |
ss_dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
2183 |
if (ss_dpl != dpl)
|
2184 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2185 |
if (!(ss_e2 & DESC_S_MASK) ||
|
2186 |
(ss_e2 & DESC_CS_MASK) || |
2187 |
!(ss_e2 & DESC_W_MASK)) |
2188 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2189 |
if (!(ss_e2 & DESC_P_MASK))
|
2190 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2191 |
|
2192 |
// push_size = ((param_count * 2) + 8) << shift;
|
2193 |
|
2194 |
old_sp_mask = get_sp_mask(env->segs[R_SS].flags); |
2195 |
old_ssp = env->segs[R_SS].base; |
2196 |
|
2197 |
sp_mask = get_sp_mask(ss_e2); |
2198 |
ssp = get_seg_base(ss_e1, ss_e2); |
2199 |
if (shift) {
|
2200 |
PUSHL(ssp, sp, sp_mask, env->segs[R_SS].selector); |
2201 |
PUSHL(ssp, sp, sp_mask, ESP); |
2202 |
for(i = param_count - 1; i >= 0; i--) { |
2203 |
val = ldl_kernel(old_ssp + ((ESP + i * 4) & old_sp_mask));
|
2204 |
PUSHL(ssp, sp, sp_mask, val); |
2205 |
} |
2206 |
} else {
|
2207 |
PUSHW(ssp, sp, sp_mask, env->segs[R_SS].selector); |
2208 |
PUSHW(ssp, sp, sp_mask, ESP); |
2209 |
for(i = param_count - 1; i >= 0; i--) { |
2210 |
val = lduw_kernel(old_ssp + ((ESP + i * 2) & old_sp_mask));
|
2211 |
PUSHW(ssp, sp, sp_mask, val); |
2212 |
} |
2213 |
} |
2214 |
new_stack = 1;
|
2215 |
} else {
|
2216 |
/* to same priviledge */
|
2217 |
sp = ESP; |
2218 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
2219 |
ssp = env->segs[R_SS].base; |
2220 |
// push_size = (4 << shift);
|
2221 |
new_stack = 0;
|
2222 |
} |
2223 |
|
2224 |
if (shift) {
|
2225 |
PUSHL(ssp, sp, sp_mask, env->segs[R_CS].selector); |
2226 |
PUSHL(ssp, sp, sp_mask, next_eip); |
2227 |
} else {
|
2228 |
PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector); |
2229 |
PUSHW(ssp, sp, sp_mask, next_eip); |
2230 |
} |
2231 |
|
2232 |
/* from this point, not restartable */
|
2233 |
|
2234 |
if (new_stack) {
|
2235 |
ss = (ss & ~3) | dpl;
|
2236 |
cpu_x86_load_seg_cache(env, R_SS, ss, |
2237 |
ssp, |
2238 |
get_seg_limit(ss_e1, ss_e2), |
2239 |
ss_e2); |
2240 |
} |
2241 |
|
2242 |
selector = (selector & ~3) | dpl;
|
2243 |
cpu_x86_load_seg_cache(env, R_CS, selector, |
2244 |
get_seg_base(e1, e2), |
2245 |
get_seg_limit(e1, e2), |
2246 |
e2); |
2247 |
cpu_x86_set_cpl(env, dpl); |
2248 |
SET_ESP(sp, sp_mask); |
2249 |
EIP = offset; |
2250 |
} |
2251 |
#ifdef USE_KQEMU
|
2252 |
if (kqemu_is_ok(env)) {
|
2253 |
env->exception_index = -1;
|
2254 |
cpu_loop_exit(); |
2255 |
} |
2256 |
#endif
|
2257 |
} |
2258 |
|
2259 |
/* real and vm86 mode iret */
|
2260 |
void helper_iret_real(int shift) |
2261 |
{ |
2262 |
uint32_t sp, new_cs, new_eip, new_eflags, sp_mask; |
2263 |
target_ulong ssp; |
2264 |
int eflags_mask;
|
2265 |
|
2266 |
sp_mask = 0xffff; /* XXXX: use SS segment size ? */ |
2267 |
sp = ESP; |
2268 |
ssp = env->segs[R_SS].base; |
2269 |
if (shift == 1) { |
2270 |
/* 32 bits */
|
2271 |
POPL(ssp, sp, sp_mask, new_eip); |
2272 |
POPL(ssp, sp, sp_mask, new_cs); |
2273 |
new_cs &= 0xffff;
|
2274 |
POPL(ssp, sp, sp_mask, new_eflags); |
2275 |
} else {
|
2276 |
/* 16 bits */
|
2277 |
POPW(ssp, sp, sp_mask, new_eip); |
2278 |
POPW(ssp, sp, sp_mask, new_cs); |
2279 |
POPW(ssp, sp, sp_mask, new_eflags); |
2280 |
} |
2281 |
ESP = (ESP & ~sp_mask) | (sp & sp_mask); |
2282 |
load_seg_vm(R_CS, new_cs); |
2283 |
env->eip = new_eip; |
2284 |
if (env->eflags & VM_MASK)
|
2285 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | RF_MASK | NT_MASK; |
2286 |
else
|
2287 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | IOPL_MASK | RF_MASK | NT_MASK; |
2288 |
if (shift == 0) |
2289 |
eflags_mask &= 0xffff;
|
2290 |
load_eflags(new_eflags, eflags_mask); |
2291 |
} |
2292 |
|
2293 |
static inline void validate_seg(int seg_reg, int cpl) |
2294 |
{ |
2295 |
int dpl;
|
2296 |
uint32_t e2; |
2297 |
|
2298 |
/* XXX: on x86_64, we do not want to nullify FS and GS because
|
2299 |
they may still contain a valid base. I would be interested to
|
2300 |
know how a real x86_64 CPU behaves */
|
2301 |
if ((seg_reg == R_FS || seg_reg == R_GS) &&
|
2302 |
(env->segs[seg_reg].selector & 0xfffc) == 0) |
2303 |
return;
|
2304 |
|
2305 |
e2 = env->segs[seg_reg].flags; |
2306 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2307 |
if (!(e2 & DESC_CS_MASK) || !(e2 & DESC_C_MASK)) {
|
2308 |
/* data or non conforming code segment */
|
2309 |
if (dpl < cpl) {
|
2310 |
cpu_x86_load_seg_cache(env, seg_reg, 0, 0, 0, 0); |
2311 |
} |
2312 |
} |
2313 |
} |
2314 |
|
2315 |
/* protected mode iret */
|
2316 |
static inline void helper_ret_protected(int shift, int is_iret, int addend) |
2317 |
{ |
2318 |
uint32_t new_cs, new_eflags, new_ss; |
2319 |
uint32_t new_es, new_ds, new_fs, new_gs; |
2320 |
uint32_t e1, e2, ss_e1, ss_e2; |
2321 |
int cpl, dpl, rpl, eflags_mask, iopl;
|
2322 |
target_ulong ssp, sp, new_eip, new_esp, sp_mask; |
2323 |
|
2324 |
#ifdef TARGET_X86_64
|
2325 |
if (shift == 2) |
2326 |
sp_mask = -1;
|
2327 |
else
|
2328 |
#endif
|
2329 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
2330 |
sp = ESP; |
2331 |
ssp = env->segs[R_SS].base; |
2332 |
new_eflags = 0; /* avoid warning */ |
2333 |
#ifdef TARGET_X86_64
|
2334 |
if (shift == 2) { |
2335 |
POPQ(sp, new_eip); |
2336 |
POPQ(sp, new_cs); |
2337 |
new_cs &= 0xffff;
|
2338 |
if (is_iret) {
|
2339 |
POPQ(sp, new_eflags); |
2340 |
} |
2341 |
} else
|
2342 |
#endif
|
2343 |
if (shift == 1) { |
2344 |
/* 32 bits */
|
2345 |
POPL(ssp, sp, sp_mask, new_eip); |
2346 |
POPL(ssp, sp, sp_mask, new_cs); |
2347 |
new_cs &= 0xffff;
|
2348 |
if (is_iret) {
|
2349 |
POPL(ssp, sp, sp_mask, new_eflags); |
2350 |
if (new_eflags & VM_MASK)
|
2351 |
goto return_to_vm86;
|
2352 |
} |
2353 |
} else {
|
2354 |
/* 16 bits */
|
2355 |
POPW(ssp, sp, sp_mask, new_eip); |
2356 |
POPW(ssp, sp, sp_mask, new_cs); |
2357 |
if (is_iret)
|
2358 |
POPW(ssp, sp, sp_mask, new_eflags); |
2359 |
} |
2360 |
#ifdef DEBUG_PCALL
|
2361 |
if (loglevel & CPU_LOG_PCALL) {
|
2362 |
fprintf(logfile, "lret new %04x:" TARGET_FMT_lx " s=%d addend=0x%x\n", |
2363 |
new_cs, new_eip, shift, addend); |
2364 |
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP); |
2365 |
} |
2366 |
#endif
|
2367 |
if ((new_cs & 0xfffc) == 0) |
2368 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2369 |
if (load_segment(&e1, &e2, new_cs) != 0) |
2370 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2371 |
if (!(e2 & DESC_S_MASK) ||
|
2372 |
!(e2 & DESC_CS_MASK)) |
2373 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2374 |
cpl = env->hflags & HF_CPL_MASK; |
2375 |
rpl = new_cs & 3;
|
2376 |
if (rpl < cpl)
|
2377 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2378 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2379 |
if (e2 & DESC_C_MASK) {
|
2380 |
if (dpl > rpl)
|
2381 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2382 |
} else {
|
2383 |
if (dpl != rpl)
|
2384 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2385 |
} |
2386 |
if (!(e2 & DESC_P_MASK))
|
2387 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
2388 |
|
2389 |
sp += addend; |
2390 |
if (rpl == cpl && (!(env->hflags & HF_CS64_MASK) ||
|
2391 |
((env->hflags & HF_CS64_MASK) && !is_iret))) { |
2392 |
/* return to same priledge level */
|
2393 |
cpu_x86_load_seg_cache(env, R_CS, new_cs, |
2394 |
get_seg_base(e1, e2), |
2395 |
get_seg_limit(e1, e2), |
2396 |
e2); |
2397 |
} else {
|
2398 |
/* return to different priviledge level */
|
2399 |
#ifdef TARGET_X86_64
|
2400 |
if (shift == 2) { |
2401 |
POPQ(sp, new_esp); |
2402 |
POPQ(sp, new_ss); |
2403 |
new_ss &= 0xffff;
|
2404 |
} else
|
2405 |
#endif
|
2406 |
if (shift == 1) { |
2407 |
/* 32 bits */
|
2408 |
POPL(ssp, sp, sp_mask, new_esp); |
2409 |
POPL(ssp, sp, sp_mask, new_ss); |
2410 |
new_ss &= 0xffff;
|
2411 |
} else {
|
2412 |
/* 16 bits */
|
2413 |
POPW(ssp, sp, sp_mask, new_esp); |
2414 |
POPW(ssp, sp, sp_mask, new_ss); |
2415 |
} |
2416 |
#ifdef DEBUG_PCALL
|
2417 |
if (loglevel & CPU_LOG_PCALL) {
|
2418 |
fprintf(logfile, "new ss:esp=%04x:" TARGET_FMT_lx "\n", |
2419 |
new_ss, new_esp); |
2420 |
} |
2421 |
#endif
|
2422 |
if ((new_ss & 0xfffc) == 0) { |
2423 |
#ifdef TARGET_X86_64
|
2424 |
/* NULL ss is allowed in long mode if cpl != 3*/
|
2425 |
/* XXX: test CS64 ? */
|
2426 |
if ((env->hflags & HF_LMA_MASK) && rpl != 3) { |
2427 |
cpu_x86_load_seg_cache(env, R_SS, new_ss, |
2428 |
0, 0xffffffff, |
2429 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2430 |
DESC_S_MASK | (rpl << DESC_DPL_SHIFT) | |
2431 |
DESC_W_MASK | DESC_A_MASK); |
2432 |
ss_e2 = DESC_B_MASK; /* XXX: should not be needed ? */
|
2433 |
} else
|
2434 |
#endif
|
2435 |
{ |
2436 |
raise_exception_err(EXCP0D_GPF, 0);
|
2437 |
} |
2438 |
} else {
|
2439 |
if ((new_ss & 3) != rpl) |
2440 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
2441 |
if (load_segment(&ss_e1, &ss_e2, new_ss) != 0) |
2442 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
2443 |
if (!(ss_e2 & DESC_S_MASK) ||
|
2444 |
(ss_e2 & DESC_CS_MASK) || |
2445 |
!(ss_e2 & DESC_W_MASK)) |
2446 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
2447 |
dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
2448 |
if (dpl != rpl)
|
2449 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
2450 |
if (!(ss_e2 & DESC_P_MASK))
|
2451 |
raise_exception_err(EXCP0B_NOSEG, new_ss & 0xfffc);
|
2452 |
cpu_x86_load_seg_cache(env, R_SS, new_ss, |
2453 |
get_seg_base(ss_e1, ss_e2), |
2454 |
get_seg_limit(ss_e1, ss_e2), |
2455 |
ss_e2); |
2456 |
} |
2457 |
|
2458 |
cpu_x86_load_seg_cache(env, R_CS, new_cs, |
2459 |
get_seg_base(e1, e2), |
2460 |
get_seg_limit(e1, e2), |
2461 |
e2); |
2462 |
cpu_x86_set_cpl(env, rpl); |
2463 |
sp = new_esp; |
2464 |
#ifdef TARGET_X86_64
|
2465 |
if (env->hflags & HF_CS64_MASK)
|
2466 |
sp_mask = -1;
|
2467 |
else
|
2468 |
#endif
|
2469 |
sp_mask = get_sp_mask(ss_e2); |
2470 |
|
2471 |
/* validate data segments */
|
2472 |
validate_seg(R_ES, rpl); |
2473 |
validate_seg(R_DS, rpl); |
2474 |
validate_seg(R_FS, rpl); |
2475 |
validate_seg(R_GS, rpl); |
2476 |
|
2477 |
sp += addend; |
2478 |
} |
2479 |
SET_ESP(sp, sp_mask); |
2480 |
env->eip = new_eip; |
2481 |
if (is_iret) {
|
2482 |
/* NOTE: 'cpl' is the _old_ CPL */
|
2483 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | RF_MASK | NT_MASK; |
2484 |
if (cpl == 0) |
2485 |
eflags_mask |= IOPL_MASK; |
2486 |
iopl = (env->eflags >> IOPL_SHIFT) & 3;
|
2487 |
if (cpl <= iopl)
|
2488 |
eflags_mask |= IF_MASK; |
2489 |
if (shift == 0) |
2490 |
eflags_mask &= 0xffff;
|
2491 |
load_eflags(new_eflags, eflags_mask); |
2492 |
} |
2493 |
return;
|
2494 |
|
2495 |
return_to_vm86:
|
2496 |
POPL(ssp, sp, sp_mask, new_esp); |
2497 |
POPL(ssp, sp, sp_mask, new_ss); |
2498 |
POPL(ssp, sp, sp_mask, new_es); |
2499 |
POPL(ssp, sp, sp_mask, new_ds); |
2500 |
POPL(ssp, sp, sp_mask, new_fs); |
2501 |
POPL(ssp, sp, sp_mask, new_gs); |
2502 |
|
2503 |
/* modify processor state */
|
2504 |
load_eflags(new_eflags, TF_MASK | AC_MASK | ID_MASK | |
2505 |
IF_MASK | IOPL_MASK | VM_MASK | NT_MASK | VIF_MASK | VIP_MASK); |
2506 |
load_seg_vm(R_CS, new_cs & 0xffff);
|
2507 |
cpu_x86_set_cpl(env, 3);
|
2508 |
load_seg_vm(R_SS, new_ss & 0xffff);
|
2509 |
load_seg_vm(R_ES, new_es & 0xffff);
|
2510 |
load_seg_vm(R_DS, new_ds & 0xffff);
|
2511 |
load_seg_vm(R_FS, new_fs & 0xffff);
|
2512 |
load_seg_vm(R_GS, new_gs & 0xffff);
|
2513 |
|
2514 |
env->eip = new_eip & 0xffff;
|
2515 |
ESP = new_esp; |
2516 |
} |
2517 |
|
2518 |
void helper_iret_protected(int shift, int next_eip) |
2519 |
{ |
2520 |
int tss_selector, type;
|
2521 |
uint32_t e1, e2; |
2522 |
|
2523 |
/* specific case for TSS */
|
2524 |
if (env->eflags & NT_MASK) {
|
2525 |
#ifdef TARGET_X86_64
|
2526 |
if (env->hflags & HF_LMA_MASK)
|
2527 |
raise_exception_err(EXCP0D_GPF, 0);
|
2528 |
#endif
|
2529 |
tss_selector = lduw_kernel(env->tr.base + 0);
|
2530 |
if (tss_selector & 4) |
2531 |
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
2532 |
if (load_segment(&e1, &e2, tss_selector) != 0) |
2533 |
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
2534 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x17;
|
2535 |
/* NOTE: we check both segment and busy TSS */
|
2536 |
if (type != 3) |
2537 |
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
2538 |
switch_tss(tss_selector, e1, e2, SWITCH_TSS_IRET, next_eip); |
2539 |
} else {
|
2540 |
helper_ret_protected(shift, 1, 0); |
2541 |
} |
2542 |
#ifdef USE_KQEMU
|
2543 |
if (kqemu_is_ok(env)) {
|
2544 |
CC_OP = CC_OP_EFLAGS; |
2545 |
env->exception_index = -1;
|
2546 |
cpu_loop_exit(); |
2547 |
} |
2548 |
#endif
|
2549 |
} |
2550 |
|
2551 |
void helper_lret_protected(int shift, int addend) |
2552 |
{ |
2553 |
helper_ret_protected(shift, 0, addend);
|
2554 |
#ifdef USE_KQEMU
|
2555 |
if (kqemu_is_ok(env)) {
|
2556 |
env->exception_index = -1;
|
2557 |
cpu_loop_exit(); |
2558 |
} |
2559 |
#endif
|
2560 |
} |
2561 |
|
2562 |
void helper_sysenter(void) |
2563 |
{ |
2564 |
if (env->sysenter_cs == 0) { |
2565 |
raise_exception_err(EXCP0D_GPF, 0);
|
2566 |
} |
2567 |
env->eflags &= ~(VM_MASK | IF_MASK | RF_MASK); |
2568 |
cpu_x86_set_cpl(env, 0);
|
2569 |
cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 0xfffc,
|
2570 |
0, 0xffffffff, |
2571 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2572 |
DESC_S_MASK | |
2573 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
2574 |
cpu_x86_load_seg_cache(env, R_SS, (env->sysenter_cs + 8) & 0xfffc, |
2575 |
0, 0xffffffff, |
2576 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2577 |
DESC_S_MASK | |
2578 |
DESC_W_MASK | DESC_A_MASK); |
2579 |
ESP = env->sysenter_esp; |
2580 |
EIP = env->sysenter_eip; |
2581 |
} |
2582 |
|
2583 |
void helper_sysexit(void) |
2584 |
{ |
2585 |
int cpl;
|
2586 |
|
2587 |
cpl = env->hflags & HF_CPL_MASK; |
2588 |
if (env->sysenter_cs == 0 || cpl != 0) { |
2589 |
raise_exception_err(EXCP0D_GPF, 0);
|
2590 |
} |
2591 |
cpu_x86_set_cpl(env, 3);
|
2592 |
cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 16) & 0xfffc) | 3, |
2593 |
0, 0xffffffff, |
2594 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2595 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
2596 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
2597 |
cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 24) & 0xfffc) | 3, |
2598 |
0, 0xffffffff, |
2599 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2600 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
2601 |
DESC_W_MASK | DESC_A_MASK); |
2602 |
ESP = ECX; |
2603 |
EIP = EDX; |
2604 |
#ifdef USE_KQEMU
|
2605 |
if (kqemu_is_ok(env)) {
|
2606 |
env->exception_index = -1;
|
2607 |
cpu_loop_exit(); |
2608 |
} |
2609 |
#endif
|
2610 |
} |
2611 |
|
2612 |
void helper_movl_crN_T0(int reg) |
2613 |
{ |
2614 |
#if !defined(CONFIG_USER_ONLY)
|
2615 |
switch(reg) {
|
2616 |
case 0: |
2617 |
cpu_x86_update_cr0(env, T0); |
2618 |
break;
|
2619 |
case 3: |
2620 |
cpu_x86_update_cr3(env, T0); |
2621 |
break;
|
2622 |
case 4: |
2623 |
cpu_x86_update_cr4(env, T0); |
2624 |
break;
|
2625 |
case 8: |
2626 |
cpu_set_apic_tpr(env, T0); |
2627 |
break;
|
2628 |
default:
|
2629 |
env->cr[reg] = T0; |
2630 |
break;
|
2631 |
} |
2632 |
#endif
|
2633 |
} |
2634 |
|
2635 |
/* XXX: do more */
|
2636 |
void helper_movl_drN_T0(int reg) |
2637 |
{ |
2638 |
env->dr[reg] = T0; |
2639 |
} |
2640 |
|
2641 |
void helper_invlpg(target_ulong addr)
|
2642 |
{ |
2643 |
cpu_x86_flush_tlb(env, addr); |
2644 |
} |
2645 |
|
2646 |
void helper_rdtsc(void) |
2647 |
{ |
2648 |
uint64_t val; |
2649 |
|
2650 |
if ((env->cr[4] & CR4_TSD_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) { |
2651 |
raise_exception(EXCP0D_GPF); |
2652 |
} |
2653 |
val = cpu_get_tsc(env); |
2654 |
EAX = (uint32_t)(val); |
2655 |
EDX = (uint32_t)(val >> 32);
|
2656 |
} |
2657 |
|
2658 |
#if defined(CONFIG_USER_ONLY)
|
2659 |
void helper_wrmsr(void) |
2660 |
{ |
2661 |
} |
2662 |
|
2663 |
void helper_rdmsr(void) |
2664 |
{ |
2665 |
} |
2666 |
#else
|
2667 |
void helper_wrmsr(void) |
2668 |
{ |
2669 |
uint64_t val; |
2670 |
|
2671 |
val = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
2672 |
|
2673 |
switch((uint32_t)ECX) {
|
2674 |
case MSR_IA32_SYSENTER_CS:
|
2675 |
env->sysenter_cs = val & 0xffff;
|
2676 |
break;
|
2677 |
case MSR_IA32_SYSENTER_ESP:
|
2678 |
env->sysenter_esp = val; |
2679 |
break;
|
2680 |
case MSR_IA32_SYSENTER_EIP:
|
2681 |
env->sysenter_eip = val; |
2682 |
break;
|
2683 |
case MSR_IA32_APICBASE:
|
2684 |
cpu_set_apic_base(env, val); |
2685 |
break;
|
2686 |
case MSR_EFER:
|
2687 |
{ |
2688 |
uint64_t update_mask; |
2689 |
update_mask = 0;
|
2690 |
if (env->cpuid_ext2_features & CPUID_EXT2_SYSCALL)
|
2691 |
update_mask |= MSR_EFER_SCE; |
2692 |
if (env->cpuid_ext2_features & CPUID_EXT2_LM)
|
2693 |
update_mask |= MSR_EFER_LME; |
2694 |
if (env->cpuid_ext2_features & CPUID_EXT2_FFXSR)
|
2695 |
update_mask |= MSR_EFER_FFXSR; |
2696 |
if (env->cpuid_ext2_features & CPUID_EXT2_NX)
|
2697 |
update_mask |= MSR_EFER_NXE; |
2698 |
env->efer = (env->efer & ~update_mask) | |
2699 |
(val & update_mask); |
2700 |
} |
2701 |
break;
|
2702 |
case MSR_STAR:
|
2703 |
env->star = val; |
2704 |
break;
|
2705 |
case MSR_PAT:
|
2706 |
env->pat = val; |
2707 |
break;
|
2708 |
#ifdef TARGET_X86_64
|
2709 |
case MSR_LSTAR:
|
2710 |
env->lstar = val; |
2711 |
break;
|
2712 |
case MSR_CSTAR:
|
2713 |
env->cstar = val; |
2714 |
break;
|
2715 |
case MSR_FMASK:
|
2716 |
env->fmask = val; |
2717 |
break;
|
2718 |
case MSR_FSBASE:
|
2719 |
env->segs[R_FS].base = val; |
2720 |
break;
|
2721 |
case MSR_GSBASE:
|
2722 |
env->segs[R_GS].base = val; |
2723 |
break;
|
2724 |
case MSR_KERNELGSBASE:
|
2725 |
env->kernelgsbase = val; |
2726 |
break;
|
2727 |
#endif
|
2728 |
default:
|
2729 |
/* XXX: exception ? */
|
2730 |
break;
|
2731 |
} |
2732 |
} |
2733 |
|
2734 |
void helper_rdmsr(void) |
2735 |
{ |
2736 |
uint64_t val; |
2737 |
switch((uint32_t)ECX) {
|
2738 |
case MSR_IA32_SYSENTER_CS:
|
2739 |
val = env->sysenter_cs; |
2740 |
break;
|
2741 |
case MSR_IA32_SYSENTER_ESP:
|
2742 |
val = env->sysenter_esp; |
2743 |
break;
|
2744 |
case MSR_IA32_SYSENTER_EIP:
|
2745 |
val = env->sysenter_eip; |
2746 |
break;
|
2747 |
case MSR_IA32_APICBASE:
|
2748 |
val = cpu_get_apic_base(env); |
2749 |
break;
|
2750 |
case MSR_EFER:
|
2751 |
val = env->efer; |
2752 |
break;
|
2753 |
case MSR_STAR:
|
2754 |
val = env->star; |
2755 |
break;
|
2756 |
case MSR_PAT:
|
2757 |
val = env->pat; |
2758 |
break;
|
2759 |
#ifdef TARGET_X86_64
|
2760 |
case MSR_LSTAR:
|
2761 |
val = env->lstar; |
2762 |
break;
|
2763 |
case MSR_CSTAR:
|
2764 |
val = env->cstar; |
2765 |
break;
|
2766 |
case MSR_FMASK:
|
2767 |
val = env->fmask; |
2768 |
break;
|
2769 |
case MSR_FSBASE:
|
2770 |
val = env->segs[R_FS].base; |
2771 |
break;
|
2772 |
case MSR_GSBASE:
|
2773 |
val = env->segs[R_GS].base; |
2774 |
break;
|
2775 |
case MSR_KERNELGSBASE:
|
2776 |
val = env->kernelgsbase; |
2777 |
break;
|
2778 |
#endif
|
2779 |
default:
|
2780 |
/* XXX: exception ? */
|
2781 |
val = 0;
|
2782 |
break;
|
2783 |
} |
2784 |
EAX = (uint32_t)(val); |
2785 |
EDX = (uint32_t)(val >> 32);
|
2786 |
} |
2787 |
#endif
|
2788 |
|
2789 |
void helper_lsl(void) |
2790 |
{ |
2791 |
unsigned int selector, limit; |
2792 |
uint32_t e1, e2, eflags; |
2793 |
int rpl, dpl, cpl, type;
|
2794 |
|
2795 |
eflags = cc_table[CC_OP].compute_all(); |
2796 |
selector = T0 & 0xffff;
|
2797 |
if (load_segment(&e1, &e2, selector) != 0) |
2798 |
goto fail;
|
2799 |
rpl = selector & 3;
|
2800 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2801 |
cpl = env->hflags & HF_CPL_MASK; |
2802 |
if (e2 & DESC_S_MASK) {
|
2803 |
if ((e2 & DESC_CS_MASK) && (e2 & DESC_C_MASK)) {
|
2804 |
/* conforming */
|
2805 |
} else {
|
2806 |
if (dpl < cpl || dpl < rpl)
|
2807 |
goto fail;
|
2808 |
} |
2809 |
} else {
|
2810 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
2811 |
switch(type) {
|
2812 |
case 1: |
2813 |
case 2: |
2814 |
case 3: |
2815 |
case 9: |
2816 |
case 11: |
2817 |
break;
|
2818 |
default:
|
2819 |
goto fail;
|
2820 |
} |
2821 |
if (dpl < cpl || dpl < rpl) {
|
2822 |
fail:
|
2823 |
CC_SRC = eflags & ~CC_Z; |
2824 |
return;
|
2825 |
} |
2826 |
} |
2827 |
limit = get_seg_limit(e1, e2); |
2828 |
T1 = limit; |
2829 |
CC_SRC = eflags | CC_Z; |
2830 |
} |
2831 |
|
2832 |
void helper_lar(void) |
2833 |
{ |
2834 |
unsigned int selector; |
2835 |
uint32_t e1, e2, eflags; |
2836 |
int rpl, dpl, cpl, type;
|
2837 |
|
2838 |
eflags = cc_table[CC_OP].compute_all(); |
2839 |
selector = T0 & 0xffff;
|
2840 |
if ((selector & 0xfffc) == 0) |
2841 |
goto fail;
|
2842 |
if (load_segment(&e1, &e2, selector) != 0) |
2843 |
goto fail;
|
2844 |
rpl = selector & 3;
|
2845 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2846 |
cpl = env->hflags & HF_CPL_MASK; |
2847 |
if (e2 & DESC_S_MASK) {
|
2848 |
if ((e2 & DESC_CS_MASK) && (e2 & DESC_C_MASK)) {
|
2849 |
/* conforming */
|
2850 |
} else {
|
2851 |
if (dpl < cpl || dpl < rpl)
|
2852 |
goto fail;
|
2853 |
} |
2854 |
} else {
|
2855 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
2856 |
switch(type) {
|
2857 |
case 1: |
2858 |
case 2: |
2859 |
case 3: |
2860 |
case 4: |
2861 |
case 5: |
2862 |
case 9: |
2863 |
case 11: |
2864 |
case 12: |
2865 |
break;
|
2866 |
default:
|
2867 |
goto fail;
|
2868 |
} |
2869 |
if (dpl < cpl || dpl < rpl) {
|
2870 |
fail:
|
2871 |
CC_SRC = eflags & ~CC_Z; |
2872 |
return;
|
2873 |
} |
2874 |
} |
2875 |
T1 = e2 & 0x00f0ff00;
|
2876 |
CC_SRC = eflags | CC_Z; |
2877 |
} |
2878 |
|
2879 |
void helper_verr(void) |
2880 |
{ |
2881 |
unsigned int selector; |
2882 |
uint32_t e1, e2, eflags; |
2883 |
int rpl, dpl, cpl;
|
2884 |
|
2885 |
eflags = cc_table[CC_OP].compute_all(); |
2886 |
selector = T0 & 0xffff;
|
2887 |
if ((selector & 0xfffc) == 0) |
2888 |
goto fail;
|
2889 |
if (load_segment(&e1, &e2, selector) != 0) |
2890 |
goto fail;
|
2891 |
if (!(e2 & DESC_S_MASK))
|
2892 |
goto fail;
|
2893 |
rpl = selector & 3;
|
2894 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2895 |
cpl = env->hflags & HF_CPL_MASK; |
2896 |
if (e2 & DESC_CS_MASK) {
|
2897 |
if (!(e2 & DESC_R_MASK))
|
2898 |
goto fail;
|
2899 |
if (!(e2 & DESC_C_MASK)) {
|
2900 |
if (dpl < cpl || dpl < rpl)
|
2901 |
goto fail;
|
2902 |
} |
2903 |
} else {
|
2904 |
if (dpl < cpl || dpl < rpl) {
|
2905 |
fail:
|
2906 |
CC_SRC = eflags & ~CC_Z; |
2907 |
return;
|
2908 |
} |
2909 |
} |
2910 |
CC_SRC = eflags | CC_Z; |
2911 |
} |
2912 |
|
2913 |
void helper_verw(void) |
2914 |
{ |
2915 |
unsigned int selector; |
2916 |
uint32_t e1, e2, eflags; |
2917 |
int rpl, dpl, cpl;
|
2918 |
|
2919 |
eflags = cc_table[CC_OP].compute_all(); |
2920 |
selector = T0 & 0xffff;
|
2921 |
if ((selector & 0xfffc) == 0) |
2922 |
goto fail;
|
2923 |
if (load_segment(&e1, &e2, selector) != 0) |
2924 |
goto fail;
|
2925 |
if (!(e2 & DESC_S_MASK))
|
2926 |
goto fail;
|
2927 |
rpl = selector & 3;
|
2928 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2929 |
cpl = env->hflags & HF_CPL_MASK; |
2930 |
if (e2 & DESC_CS_MASK) {
|
2931 |
goto fail;
|
2932 |
} else {
|
2933 |
if (dpl < cpl || dpl < rpl)
|
2934 |
goto fail;
|
2935 |
if (!(e2 & DESC_W_MASK)) {
|
2936 |
fail:
|
2937 |
CC_SRC = eflags & ~CC_Z; |
2938 |
return;
|
2939 |
} |
2940 |
} |
2941 |
CC_SRC = eflags | CC_Z; |
2942 |
} |
2943 |
|
2944 |
/* FPU helpers */
|
2945 |
|
2946 |
void helper_fldt_ST0_A0(void) |
2947 |
{ |
2948 |
int new_fpstt;
|
2949 |
new_fpstt = (env->fpstt - 1) & 7; |
2950 |
env->fpregs[new_fpstt].d = helper_fldt(A0); |
2951 |
env->fpstt = new_fpstt; |
2952 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
2953 |
} |
2954 |
|
2955 |
void helper_fstt_ST0_A0(void) |
2956 |
{ |
2957 |
helper_fstt(ST0, A0); |
2958 |
} |
2959 |
|
2960 |
void fpu_set_exception(int mask) |
2961 |
{ |
2962 |
env->fpus |= mask; |
2963 |
if (env->fpus & (~env->fpuc & FPUC_EM))
|
2964 |
env->fpus |= FPUS_SE | FPUS_B; |
2965 |
} |
2966 |
|
2967 |
CPU86_LDouble helper_fdiv(CPU86_LDouble a, CPU86_LDouble b) |
2968 |
{ |
2969 |
if (b == 0.0) |
2970 |
fpu_set_exception(FPUS_ZE); |
2971 |
return a / b;
|
2972 |
} |
2973 |
|
2974 |
void fpu_raise_exception(void) |
2975 |
{ |
2976 |
if (env->cr[0] & CR0_NE_MASK) { |
2977 |
raise_exception(EXCP10_COPR); |
2978 |
} |
2979 |
#if !defined(CONFIG_USER_ONLY)
|
2980 |
else {
|
2981 |
cpu_set_ferr(env); |
2982 |
} |
2983 |
#endif
|
2984 |
} |
2985 |
|
2986 |
/* BCD ops */
|
2987 |
|
2988 |
void helper_fbld_ST0_A0(void) |
2989 |
{ |
2990 |
CPU86_LDouble tmp; |
2991 |
uint64_t val; |
2992 |
unsigned int v; |
2993 |
int i;
|
2994 |
|
2995 |
val = 0;
|
2996 |
for(i = 8; i >= 0; i--) { |
2997 |
v = ldub(A0 + i); |
2998 |
val = (val * 100) + ((v >> 4) * 10) + (v & 0xf); |
2999 |
} |
3000 |
tmp = val; |
3001 |
if (ldub(A0 + 9) & 0x80) |
3002 |
tmp = -tmp; |
3003 |
fpush(); |
3004 |
ST0 = tmp; |
3005 |
} |
3006 |
|
3007 |
void helper_fbst_ST0_A0(void) |
3008 |
{ |
3009 |
int v;
|
3010 |
target_ulong mem_ref, mem_end; |
3011 |
int64_t val; |
3012 |
|
3013 |
val = floatx_to_int64(ST0, &env->fp_status); |
3014 |
mem_ref = A0; |
3015 |
mem_end = mem_ref + 9;
|
3016 |
if (val < 0) { |
3017 |
stb(mem_end, 0x80);
|
3018 |
val = -val; |
3019 |
} else {
|
3020 |
stb(mem_end, 0x00);
|
3021 |
} |
3022 |
while (mem_ref < mem_end) {
|
3023 |
if (val == 0) |
3024 |
break;
|
3025 |
v = val % 100;
|
3026 |
val = val / 100;
|
3027 |
v = ((v / 10) << 4) | (v % 10); |
3028 |
stb(mem_ref++, v); |
3029 |
} |
3030 |
while (mem_ref < mem_end) {
|
3031 |
stb(mem_ref++, 0);
|
3032 |
} |
3033 |
} |
3034 |
|
3035 |
void helper_f2xm1(void) |
3036 |
{ |
3037 |
ST0 = pow(2.0,ST0) - 1.0; |
3038 |
} |
3039 |
|
3040 |
void helper_fyl2x(void) |
3041 |
{ |
3042 |
CPU86_LDouble fptemp; |
3043 |
|
3044 |
fptemp = ST0; |
3045 |
if (fptemp>0.0){ |
3046 |
fptemp = log(fptemp)/log(2.0); /* log2(ST) */ |
3047 |
ST1 *= fptemp; |
3048 |
fpop(); |
3049 |
} else {
|
3050 |
env->fpus &= (~0x4700);
|
3051 |
env->fpus |= 0x400;
|
3052 |
} |
3053 |
} |
3054 |
|
3055 |
void helper_fptan(void) |
3056 |
{ |
3057 |
CPU86_LDouble fptemp; |
3058 |
|
3059 |
fptemp = ST0; |
3060 |
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
3061 |
env->fpus |= 0x400;
|
3062 |
} else {
|
3063 |
ST0 = tan(fptemp); |
3064 |
fpush(); |
3065 |
ST0 = 1.0; |
3066 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
3067 |
/* the above code is for |arg| < 2**52 only */
|
3068 |
} |
3069 |
} |
3070 |
|
3071 |
void helper_fpatan(void) |
3072 |
{ |
3073 |
CPU86_LDouble fptemp, fpsrcop; |
3074 |
|
3075 |
fpsrcop = ST1; |
3076 |
fptemp = ST0; |
3077 |
ST1 = atan2(fpsrcop,fptemp); |
3078 |
fpop(); |
3079 |
} |
3080 |
|
3081 |
void helper_fxtract(void) |
3082 |
{ |
3083 |
CPU86_LDoubleU temp; |
3084 |
unsigned int expdif; |
3085 |
|
3086 |
temp.d = ST0; |
3087 |
expdif = EXPD(temp) - EXPBIAS; |
3088 |
/*DP exponent bias*/
|
3089 |
ST0 = expdif; |
3090 |
fpush(); |
3091 |
BIASEXPONENT(temp); |
3092 |
ST0 = temp.d; |
3093 |
} |
3094 |
|
3095 |
void helper_fprem1(void) |
3096 |
{ |
3097 |
CPU86_LDouble dblq, fpsrcop, fptemp; |
3098 |
CPU86_LDoubleU fpsrcop1, fptemp1; |
3099 |
int expdif;
|
3100 |
int q;
|
3101 |
|
3102 |
fpsrcop = ST0; |
3103 |
fptemp = ST1; |
3104 |
fpsrcop1.d = fpsrcop; |
3105 |
fptemp1.d = fptemp; |
3106 |
expdif = EXPD(fpsrcop1) - EXPD(fptemp1); |
3107 |
if (expdif < 53) { |
3108 |
dblq = fpsrcop / fptemp; |
3109 |
dblq = (dblq < 0.0)? ceil(dblq): floor(dblq); |
3110 |
ST0 = fpsrcop - fptemp*dblq; |
3111 |
q = (int)dblq; /* cutting off top bits is assumed here */ |
3112 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
3113 |
/* (C0,C1,C3) <-- (q2,q1,q0) */
|
3114 |
env->fpus |= (q&0x4) << 6; /* (C0) <-- q2 */ |
3115 |
env->fpus |= (q&0x2) << 8; /* (C1) <-- q1 */ |
3116 |
env->fpus |= (q&0x1) << 14; /* (C3) <-- q0 */ |
3117 |
} else {
|
3118 |
env->fpus |= 0x400; /* C2 <-- 1 */ |
3119 |
fptemp = pow(2.0, expdif-50); |
3120 |
fpsrcop = (ST0 / ST1) / fptemp; |
3121 |
/* fpsrcop = integer obtained by rounding to the nearest */
|
3122 |
fpsrcop = (fpsrcop-floor(fpsrcop) < ceil(fpsrcop)-fpsrcop)? |
3123 |
floor(fpsrcop): ceil(fpsrcop); |
3124 |
ST0 -= (ST1 * fpsrcop * fptemp); |
3125 |
} |
3126 |
} |
3127 |
|
3128 |
void helper_fprem(void) |
3129 |
{ |
3130 |
CPU86_LDouble dblq, fpsrcop, fptemp; |
3131 |
CPU86_LDoubleU fpsrcop1, fptemp1; |
3132 |
int expdif;
|
3133 |
int q;
|
3134 |
|
3135 |
fpsrcop = ST0; |
3136 |
fptemp = ST1; |
3137 |
fpsrcop1.d = fpsrcop; |
3138 |
fptemp1.d = fptemp; |
3139 |
expdif = EXPD(fpsrcop1) - EXPD(fptemp1); |
3140 |
if ( expdif < 53 ) { |
3141 |
dblq = fpsrcop / fptemp; |
3142 |
dblq = (dblq < 0.0)? ceil(dblq): floor(dblq); |
3143 |
ST0 = fpsrcop - fptemp*dblq; |
3144 |
q = (int)dblq; /* cutting off top bits is assumed here */ |
3145 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
3146 |
/* (C0,C1,C3) <-- (q2,q1,q0) */
|
3147 |
env->fpus |= (q&0x4) << 6; /* (C0) <-- q2 */ |
3148 |
env->fpus |= (q&0x2) << 8; /* (C1) <-- q1 */ |
3149 |
env->fpus |= (q&0x1) << 14; /* (C3) <-- q0 */ |
3150 |
} else {
|
3151 |
env->fpus |= 0x400; /* C2 <-- 1 */ |
3152 |
fptemp = pow(2.0, expdif-50); |
3153 |
fpsrcop = (ST0 / ST1) / fptemp; |
3154 |
/* fpsrcop = integer obtained by chopping */
|
3155 |
fpsrcop = (fpsrcop < 0.0)? |
3156 |
-(floor(fabs(fpsrcop))): floor(fpsrcop); |
3157 |
ST0 -= (ST1 * fpsrcop * fptemp); |
3158 |
} |
3159 |
} |
3160 |
|
3161 |
void helper_fyl2xp1(void) |
3162 |
{ |
3163 |
CPU86_LDouble fptemp; |
3164 |
|
3165 |
fptemp = ST0; |
3166 |
if ((fptemp+1.0)>0.0) { |
3167 |
fptemp = log(fptemp+1.0) / log(2.0); /* log2(ST+1.0) */ |
3168 |
ST1 *= fptemp; |
3169 |
fpop(); |
3170 |
} else {
|
3171 |
env->fpus &= (~0x4700);
|
3172 |
env->fpus |= 0x400;
|
3173 |
} |
3174 |
} |
3175 |
|
3176 |
void helper_fsqrt(void) |
3177 |
{ |
3178 |
CPU86_LDouble fptemp; |
3179 |
|
3180 |
fptemp = ST0; |
3181 |
if (fptemp<0.0) { |
3182 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
3183 |
env->fpus |= 0x400;
|
3184 |
} |
3185 |
ST0 = sqrt(fptemp); |
3186 |
} |
3187 |
|
3188 |
void helper_fsincos(void) |
3189 |
{ |
3190 |
CPU86_LDouble fptemp; |
3191 |
|
3192 |
fptemp = ST0; |
3193 |
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
3194 |
env->fpus |= 0x400;
|
3195 |
} else {
|
3196 |
ST0 = sin(fptemp); |
3197 |
fpush(); |
3198 |
ST0 = cos(fptemp); |
3199 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
3200 |
/* the above code is for |arg| < 2**63 only */
|
3201 |
} |
3202 |
} |
3203 |
|
3204 |
void helper_frndint(void) |
3205 |
{ |
3206 |
ST0 = floatx_round_to_int(ST0, &env->fp_status); |
3207 |
} |
3208 |
|
3209 |
void helper_fscale(void) |
3210 |
{ |
3211 |
ST0 = ldexp (ST0, (int)(ST1));
|
3212 |
} |
3213 |
|
3214 |
void helper_fsin(void) |
3215 |
{ |
3216 |
CPU86_LDouble fptemp; |
3217 |
|
3218 |
fptemp = ST0; |
3219 |
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
3220 |
env->fpus |= 0x400;
|
3221 |
} else {
|
3222 |
ST0 = sin(fptemp); |
3223 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
3224 |
/* the above code is for |arg| < 2**53 only */
|
3225 |
} |
3226 |
} |
3227 |
|
3228 |
void helper_fcos(void) |
3229 |
{ |
3230 |
CPU86_LDouble fptemp; |
3231 |
|
3232 |
fptemp = ST0; |
3233 |
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
3234 |
env->fpus |= 0x400;
|
3235 |
} else {
|
3236 |
ST0 = cos(fptemp); |
3237 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
3238 |
/* the above code is for |arg5 < 2**63 only */
|
3239 |
} |
3240 |
} |
3241 |
|
3242 |
void helper_fxam_ST0(void) |
3243 |
{ |
3244 |
CPU86_LDoubleU temp; |
3245 |
int expdif;
|
3246 |
|
3247 |
temp.d = ST0; |
3248 |
|
3249 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
3250 |
if (SIGND(temp))
|
3251 |
env->fpus |= 0x200; /* C1 <-- 1 */ |
3252 |
|
3253 |
/* XXX: test fptags too */
|
3254 |
expdif = EXPD(temp); |
3255 |
if (expdif == MAXEXPD) {
|
3256 |
#ifdef USE_X86LDOUBLE
|
3257 |
if (MANTD(temp) == 0x8000000000000000ULL) |
3258 |
#else
|
3259 |
if (MANTD(temp) == 0) |
3260 |
#endif
|
3261 |
env->fpus |= 0x500 /*Infinity*/; |
3262 |
else
|
3263 |
env->fpus |= 0x100 /*NaN*/; |
3264 |
} else if (expdif == 0) { |
3265 |
if (MANTD(temp) == 0) |
3266 |
env->fpus |= 0x4000 /*Zero*/; |
3267 |
else
|
3268 |
env->fpus |= 0x4400 /*Denormal*/; |
3269 |
} else {
|
3270 |
env->fpus |= 0x400;
|
3271 |
} |
3272 |
} |
3273 |
|
3274 |
void helper_fstenv(target_ulong ptr, int data32) |
3275 |
{ |
3276 |
int fpus, fptag, exp, i;
|
3277 |
uint64_t mant; |
3278 |
CPU86_LDoubleU tmp; |
3279 |
|
3280 |
fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
3281 |
fptag = 0;
|
3282 |
for (i=7; i>=0; i--) { |
3283 |
fptag <<= 2;
|
3284 |
if (env->fptags[i]) {
|
3285 |
fptag |= 3;
|
3286 |
} else {
|
3287 |
tmp.d = env->fpregs[i].d; |
3288 |
exp = EXPD(tmp); |
3289 |
mant = MANTD(tmp); |
3290 |
if (exp == 0 && mant == 0) { |
3291 |
/* zero */
|
3292 |
fptag |= 1;
|
3293 |
} else if (exp == 0 || exp == MAXEXPD |
3294 |
#ifdef USE_X86LDOUBLE
|
3295 |
|| (mant & (1LL << 63)) == 0 |
3296 |
#endif
|
3297 |
) { |
3298 |
/* NaNs, infinity, denormal */
|
3299 |
fptag |= 2;
|
3300 |
} |
3301 |
} |
3302 |
} |
3303 |
if (data32) {
|
3304 |
/* 32 bit */
|
3305 |
stl(ptr, env->fpuc); |
3306 |
stl(ptr + 4, fpus);
|
3307 |
stl(ptr + 8, fptag);
|
3308 |
stl(ptr + 12, 0); /* fpip */ |
3309 |
stl(ptr + 16, 0); /* fpcs */ |
3310 |
stl(ptr + 20, 0); /* fpoo */ |
3311 |
stl(ptr + 24, 0); /* fpos */ |
3312 |
} else {
|
3313 |
/* 16 bit */
|
3314 |
stw(ptr, env->fpuc); |
3315 |
stw(ptr + 2, fpus);
|
3316 |
stw(ptr + 4, fptag);
|
3317 |
stw(ptr + 6, 0); |
3318 |
stw(ptr + 8, 0); |
3319 |
stw(ptr + 10, 0); |
3320 |
stw(ptr + 12, 0); |
3321 |
} |
3322 |
} |
3323 |
|
3324 |
void helper_fldenv(target_ulong ptr, int data32) |
3325 |
{ |
3326 |
int i, fpus, fptag;
|
3327 |
|
3328 |
if (data32) {
|
3329 |
env->fpuc = lduw(ptr); |
3330 |
fpus = lduw(ptr + 4);
|
3331 |
fptag = lduw(ptr + 8);
|
3332 |
} |
3333 |
else {
|
3334 |
env->fpuc = lduw(ptr); |
3335 |
fpus = lduw(ptr + 2);
|
3336 |
fptag = lduw(ptr + 4);
|
3337 |
} |
3338 |
env->fpstt = (fpus >> 11) & 7; |
3339 |
env->fpus = fpus & ~0x3800;
|
3340 |
for(i = 0;i < 8; i++) { |
3341 |
env->fptags[i] = ((fptag & 3) == 3); |
3342 |
fptag >>= 2;
|
3343 |
} |
3344 |
} |
3345 |
|
3346 |
void helper_fsave(target_ulong ptr, int data32) |
3347 |
{ |
3348 |
CPU86_LDouble tmp; |
3349 |
int i;
|
3350 |
|
3351 |
helper_fstenv(ptr, data32); |
3352 |
|
3353 |
ptr += (14 << data32);
|
3354 |
for(i = 0;i < 8; i++) { |
3355 |
tmp = ST(i); |
3356 |
helper_fstt(tmp, ptr); |
3357 |
ptr += 10;
|
3358 |
} |
3359 |
|
3360 |
/* fninit */
|
3361 |
env->fpus = 0;
|
3362 |
env->fpstt = 0;
|
3363 |
env->fpuc = 0x37f;
|
3364 |
env->fptags[0] = 1; |
3365 |
env->fptags[1] = 1; |
3366 |
env->fptags[2] = 1; |
3367 |
env->fptags[3] = 1; |
3368 |
env->fptags[4] = 1; |
3369 |
env->fptags[5] = 1; |
3370 |
env->fptags[6] = 1; |
3371 |
env->fptags[7] = 1; |
3372 |
} |
3373 |
|
3374 |
void helper_frstor(target_ulong ptr, int data32) |
3375 |
{ |
3376 |
CPU86_LDouble tmp; |
3377 |
int i;
|
3378 |
|
3379 |
helper_fldenv(ptr, data32); |
3380 |
ptr += (14 << data32);
|
3381 |
|
3382 |
for(i = 0;i < 8; i++) { |
3383 |
tmp = helper_fldt(ptr); |
3384 |
ST(i) = tmp; |
3385 |
ptr += 10;
|
3386 |
} |
3387 |
} |
3388 |
|
3389 |
void helper_fxsave(target_ulong ptr, int data64) |
3390 |
{ |
3391 |
int fpus, fptag, i, nb_xmm_regs;
|
3392 |
CPU86_LDouble tmp; |
3393 |
target_ulong addr; |
3394 |
|
3395 |
fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
3396 |
fptag = 0;
|
3397 |
for(i = 0; i < 8; i++) { |
3398 |
fptag |= (env->fptags[i] << i); |
3399 |
} |
3400 |
stw(ptr, env->fpuc); |
3401 |
stw(ptr + 2, fpus);
|
3402 |
stw(ptr + 4, fptag ^ 0xff); |
3403 |
|
3404 |
addr = ptr + 0x20;
|
3405 |
for(i = 0;i < 8; i++) { |
3406 |
tmp = ST(i); |
3407 |
helper_fstt(tmp, addr); |
3408 |
addr += 16;
|
3409 |
} |
3410 |
|
3411 |
if (env->cr[4] & CR4_OSFXSR_MASK) { |
3412 |
/* XXX: finish it */
|
3413 |
stl(ptr + 0x18, env->mxcsr); /* mxcsr */ |
3414 |
stl(ptr + 0x1c, 0x0000ffff); /* mxcsr_mask */ |
3415 |
nb_xmm_regs = 8 << data64;
|
3416 |
addr = ptr + 0xa0;
|
3417 |
for(i = 0; i < nb_xmm_regs; i++) { |
3418 |
stq(addr, env->xmm_regs[i].XMM_Q(0));
|
3419 |
stq(addr + 8, env->xmm_regs[i].XMM_Q(1)); |
3420 |
addr += 16;
|
3421 |
} |
3422 |
} |
3423 |
} |
3424 |
|
3425 |
void helper_fxrstor(target_ulong ptr, int data64) |
3426 |
{ |
3427 |
int i, fpus, fptag, nb_xmm_regs;
|
3428 |
CPU86_LDouble tmp; |
3429 |
target_ulong addr; |
3430 |
|
3431 |
env->fpuc = lduw(ptr); |
3432 |
fpus = lduw(ptr + 2);
|
3433 |
fptag = lduw(ptr + 4);
|
3434 |
env->fpstt = (fpus >> 11) & 7; |
3435 |
env->fpus = fpus & ~0x3800;
|
3436 |
fptag ^= 0xff;
|
3437 |
for(i = 0;i < 8; i++) { |
3438 |
env->fptags[i] = ((fptag >> i) & 1);
|
3439 |
} |
3440 |
|
3441 |
addr = ptr + 0x20;
|
3442 |
for(i = 0;i < 8; i++) { |
3443 |
tmp = helper_fldt(addr); |
3444 |
ST(i) = tmp; |
3445 |
addr += 16;
|
3446 |
} |
3447 |
|
3448 |
if (env->cr[4] & CR4_OSFXSR_MASK) { |
3449 |
/* XXX: finish it */
|
3450 |
env->mxcsr = ldl(ptr + 0x18);
|
3451 |
//ldl(ptr + 0x1c);
|
3452 |
nb_xmm_regs = 8 << data64;
|
3453 |
addr = ptr + 0xa0;
|
3454 |
for(i = 0; i < nb_xmm_regs; i++) { |
3455 |
env->xmm_regs[i].XMM_Q(0) = ldq(addr);
|
3456 |
env->xmm_regs[i].XMM_Q(1) = ldq(addr + 8); |
3457 |
addr += 16;
|
3458 |
} |
3459 |
} |
3460 |
} |
3461 |
|
3462 |
#ifndef USE_X86LDOUBLE
|
3463 |
|
3464 |
void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f)
|
3465 |
{ |
3466 |
CPU86_LDoubleU temp; |
3467 |
int e;
|
3468 |
|
3469 |
temp.d = f; |
3470 |
/* mantissa */
|
3471 |
*pmant = (MANTD(temp) << 11) | (1LL << 63); |
3472 |
/* exponent + sign */
|
3473 |
e = EXPD(temp) - EXPBIAS + 16383;
|
3474 |
e |= SIGND(temp) >> 16;
|
3475 |
*pexp = e; |
3476 |
} |
3477 |
|
3478 |
CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper) |
3479 |
{ |
3480 |
CPU86_LDoubleU temp; |
3481 |
int e;
|
3482 |
uint64_t ll; |
3483 |
|
3484 |
/* XXX: handle overflow ? */
|
3485 |
e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */ |
3486 |
e |= (upper >> 4) & 0x800; /* sign */ |
3487 |
ll = (mant >> 11) & ((1LL << 52) - 1); |
3488 |
#ifdef __arm__
|
3489 |
temp.l.upper = (e << 20) | (ll >> 32); |
3490 |
temp.l.lower = ll; |
3491 |
#else
|
3492 |
temp.ll = ll | ((uint64_t)e << 52);
|
3493 |
#endif
|
3494 |
return temp.d;
|
3495 |
} |
3496 |
|
3497 |
#else
|
3498 |
|
3499 |
void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f)
|
3500 |
{ |
3501 |
CPU86_LDoubleU temp; |
3502 |
|
3503 |
temp.d = f; |
3504 |
*pmant = temp.l.lower; |
3505 |
*pexp = temp.l.upper; |
3506 |
} |
3507 |
|
3508 |
CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper) |
3509 |
{ |
3510 |
CPU86_LDoubleU temp; |
3511 |
|
3512 |
temp.l.upper = upper; |
3513 |
temp.l.lower = mant; |
3514 |
return temp.d;
|
3515 |
} |
3516 |
#endif
|
3517 |
|
3518 |
#ifdef TARGET_X86_64
|
3519 |
|
3520 |
//#define DEBUG_MULDIV
|
3521 |
|
3522 |
static void add128(uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b) |
3523 |
{ |
3524 |
*plow += a; |
3525 |
/* carry test */
|
3526 |
if (*plow < a)
|
3527 |
(*phigh)++; |
3528 |
*phigh += b; |
3529 |
} |
3530 |
|
3531 |
static void neg128(uint64_t *plow, uint64_t *phigh) |
3532 |
{ |
3533 |
*plow = ~ *plow; |
3534 |
*phigh = ~ *phigh; |
3535 |
add128(plow, phigh, 1, 0); |
3536 |
} |
3537 |
|
3538 |
static void mul64(uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b) |
3539 |
{ |
3540 |
uint32_t a0, a1, b0, b1; |
3541 |
uint64_t v; |
3542 |
|
3543 |
a0 = a; |
3544 |
a1 = a >> 32;
|
3545 |
|
3546 |
b0 = b; |
3547 |
b1 = b >> 32;
|
3548 |
|
3549 |
v = (uint64_t)a0 * (uint64_t)b0; |
3550 |
*plow = v; |
3551 |
*phigh = 0;
|
3552 |
|
3553 |
v = (uint64_t)a0 * (uint64_t)b1; |
3554 |
add128(plow, phigh, v << 32, v >> 32); |
3555 |
|
3556 |
v = (uint64_t)a1 * (uint64_t)b0; |
3557 |
add128(plow, phigh, v << 32, v >> 32); |
3558 |
|
3559 |
v = (uint64_t)a1 * (uint64_t)b1; |
3560 |
*phigh += v; |
3561 |
#ifdef DEBUG_MULDIV
|
3562 |
printf("mul: 0x%016" PRIx64 " * 0x%016" PRIx64 " = 0x%016" PRIx64 "%016" PRIx64 "\n", |
3563 |
a, b, *phigh, *plow); |
3564 |
#endif
|
3565 |
} |
3566 |
|
3567 |
static void imul64(uint64_t *plow, uint64_t *phigh, int64_t a, int64_t b) |
3568 |
{ |
3569 |
int sa, sb;
|
3570 |
sa = (a < 0);
|
3571 |
if (sa)
|
3572 |
a = -a; |
3573 |
sb = (b < 0);
|
3574 |
if (sb)
|
3575 |
b = -b; |
3576 |
mul64(plow, phigh, a, b); |
3577 |
if (sa ^ sb) {
|
3578 |
neg128(plow, phigh); |
3579 |
} |
3580 |
} |
3581 |
|
3582 |
/* return TRUE if overflow */
|
3583 |
static int div64(uint64_t *plow, uint64_t *phigh, uint64_t b) |
3584 |
{ |
3585 |
uint64_t q, r, a1, a0; |
3586 |
int i, qb, ab;
|
3587 |
|
3588 |
a0 = *plow; |
3589 |
a1 = *phigh; |
3590 |
if (a1 == 0) { |
3591 |
q = a0 / b; |
3592 |
r = a0 % b; |
3593 |
*plow = q; |
3594 |
*phigh = r; |
3595 |
} else {
|
3596 |
if (a1 >= b)
|
3597 |
return 1; |
3598 |
/* XXX: use a better algorithm */
|
3599 |
for(i = 0; i < 64; i++) { |
3600 |
ab = a1 >> 63;
|
3601 |
a1 = (a1 << 1) | (a0 >> 63); |
3602 |
if (ab || a1 >= b) {
|
3603 |
a1 -= b; |
3604 |
qb = 1;
|
3605 |
} else {
|
3606 |
qb = 0;
|
3607 |
} |
3608 |
a0 = (a0 << 1) | qb;
|
3609 |
} |
3610 |
#if defined(DEBUG_MULDIV)
|
3611 |
printf("div: 0x%016" PRIx64 "%016" PRIx64 " / 0x%016" PRIx64 ": q=0x%016" PRIx64 " r=0x%016" PRIx64 "\n", |
3612 |
*phigh, *plow, b, a0, a1); |
3613 |
#endif
|
3614 |
*plow = a0; |
3615 |
*phigh = a1; |
3616 |
} |
3617 |
return 0; |
3618 |
} |
3619 |
|
3620 |
/* return TRUE if overflow */
|
3621 |
static int idiv64(uint64_t *plow, uint64_t *phigh, int64_t b) |
3622 |
{ |
3623 |
int sa, sb;
|
3624 |
sa = ((int64_t)*phigh < 0);
|
3625 |
if (sa)
|
3626 |
neg128(plow, phigh); |
3627 |
sb = (b < 0);
|
3628 |
if (sb)
|
3629 |
b = -b; |
3630 |
if (div64(plow, phigh, b) != 0) |
3631 |
return 1; |
3632 |
if (sa ^ sb) {
|
3633 |
if (*plow > (1ULL << 63)) |
3634 |
return 1; |
3635 |
*plow = - *plow; |
3636 |
} else {
|
3637 |
if (*plow >= (1ULL << 63)) |
3638 |
return 1; |
3639 |
} |
3640 |
if (sa)
|
3641 |
*phigh = - *phigh; |
3642 |
return 0; |
3643 |
} |
3644 |
|
3645 |
void helper_mulq_EAX_T0(void) |
3646 |
{ |
3647 |
uint64_t r0, r1; |
3648 |
|
3649 |
mul64(&r0, &r1, EAX, T0); |
3650 |
EAX = r0; |
3651 |
EDX = r1; |
3652 |
CC_DST = r0; |
3653 |
CC_SRC = r1; |
3654 |
} |
3655 |
|
3656 |
void helper_imulq_EAX_T0(void) |
3657 |
{ |
3658 |
uint64_t r0, r1; |
3659 |
|
3660 |
imul64(&r0, &r1, EAX, T0); |
3661 |
EAX = r0; |
3662 |
EDX = r1; |
3663 |
CC_DST = r0; |
3664 |
CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
|
3665 |
} |
3666 |
|
3667 |
void helper_imulq_T0_T1(void) |
3668 |
{ |
3669 |
uint64_t r0, r1; |
3670 |
|
3671 |
imul64(&r0, &r1, T0, T1); |
3672 |
T0 = r0; |
3673 |
CC_DST = r0; |
3674 |
CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
|
3675 |
} |
3676 |
|
3677 |
void helper_divq_EAX_T0(void) |
3678 |
{ |
3679 |
uint64_t r0, r1; |
3680 |
if (T0 == 0) { |
3681 |
raise_exception(EXCP00_DIVZ); |
3682 |
} |
3683 |
r0 = EAX; |
3684 |
r1 = EDX; |
3685 |
if (div64(&r0, &r1, T0))
|
3686 |
raise_exception(EXCP00_DIVZ); |
3687 |
EAX = r0; |
3688 |
EDX = r1; |
3689 |
} |
3690 |
|
3691 |
void helper_idivq_EAX_T0(void) |
3692 |
{ |
3693 |
uint64_t r0, r1; |
3694 |
if (T0 == 0) { |
3695 |
raise_exception(EXCP00_DIVZ); |
3696 |
} |
3697 |
r0 = EAX; |
3698 |
r1 = EDX; |
3699 |
if (idiv64(&r0, &r1, T0))
|
3700 |
raise_exception(EXCP00_DIVZ); |
3701 |
EAX = r0; |
3702 |
EDX = r1; |
3703 |
} |
3704 |
|
3705 |
void helper_bswapq_T0(void) |
3706 |
{ |
3707 |
T0 = bswap64(T0); |
3708 |
} |
3709 |
#endif
|
3710 |
|
3711 |
void helper_hlt(void) |
3712 |
{ |
3713 |
env->hflags &= ~HF_INHIBIT_IRQ_MASK; /* needed if sti is just before */
|
3714 |
env->hflags |= HF_HALTED_MASK; |
3715 |
env->exception_index = EXCP_HLT; |
3716 |
cpu_loop_exit(); |
3717 |
} |
3718 |
|
3719 |
void helper_monitor(void) |
3720 |
{ |
3721 |
if ((uint32_t)ECX != 0) |
3722 |
raise_exception(EXCP0D_GPF); |
3723 |
/* XXX: store address ? */
|
3724 |
} |
3725 |
|
3726 |
void helper_mwait(void) |
3727 |
{ |
3728 |
if ((uint32_t)ECX != 0) |
3729 |
raise_exception(EXCP0D_GPF); |
3730 |
/* XXX: not complete but not completely erroneous */
|
3731 |
if (env->cpu_index != 0 || env->next_cpu != NULL) { |
3732 |
/* more than one CPU: do not sleep because another CPU may
|
3733 |
wake this one */
|
3734 |
} else {
|
3735 |
helper_hlt(); |
3736 |
} |
3737 |
} |
3738 |
|
3739 |
float approx_rsqrt(float a) |
3740 |
{ |
3741 |
return 1.0 / sqrt(a); |
3742 |
} |
3743 |
|
3744 |
float approx_rcp(float a) |
3745 |
{ |
3746 |
return 1.0 / a; |
3747 |
} |
3748 |
|
3749 |
void update_fp_status(void) |
3750 |
{ |
3751 |
int rnd_type;
|
3752 |
|
3753 |
/* set rounding mode */
|
3754 |
switch(env->fpuc & RC_MASK) {
|
3755 |
default:
|
3756 |
case RC_NEAR:
|
3757 |
rnd_type = float_round_nearest_even; |
3758 |
break;
|
3759 |
case RC_DOWN:
|
3760 |
rnd_type = float_round_down; |
3761 |
break;
|
3762 |
case RC_UP:
|
3763 |
rnd_type = float_round_up; |
3764 |
break;
|
3765 |
case RC_CHOP:
|
3766 |
rnd_type = float_round_to_zero; |
3767 |
break;
|
3768 |
} |
3769 |
set_float_rounding_mode(rnd_type, &env->fp_status); |
3770 |
#ifdef FLOATX80
|
3771 |
switch((env->fpuc >> 8) & 3) { |
3772 |
case 0: |
3773 |
rnd_type = 32;
|
3774 |
break;
|
3775 |
case 2: |
3776 |
rnd_type = 64;
|
3777 |
break;
|
3778 |
case 3: |
3779 |
default:
|
3780 |
rnd_type = 80;
|
3781 |
break;
|
3782 |
} |
3783 |
set_floatx80_rounding_precision(rnd_type, &env->fp_status); |
3784 |
#endif
|
3785 |
} |
3786 |
|
3787 |
#if !defined(CONFIG_USER_ONLY)
|
3788 |
|
3789 |
#define MMUSUFFIX _mmu
|
3790 |
#define GETPC() (__builtin_return_address(0)) |
3791 |
|
3792 |
#define SHIFT 0 |
3793 |
#include "softmmu_template.h" |
3794 |
|
3795 |
#define SHIFT 1 |
3796 |
#include "softmmu_template.h" |
3797 |
|
3798 |
#define SHIFT 2 |
3799 |
#include "softmmu_template.h" |
3800 |
|
3801 |
#define SHIFT 3 |
3802 |
#include "softmmu_template.h" |
3803 |
|
3804 |
#endif
|
3805 |
|
3806 |
/* try to fill the TLB and return an exception if error. If retaddr is
|
3807 |
NULL, it means that the function was called in C code (i.e. not
|
3808 |
from generated code or from helper.c) */
|
3809 |
/* XXX: fix it to restore all registers */
|
3810 |
void tlb_fill(target_ulong addr, int is_write, int is_user, void *retaddr) |
3811 |
{ |
3812 |
TranslationBlock *tb; |
3813 |
int ret;
|
3814 |
unsigned long pc; |
3815 |
CPUX86State *saved_env; |
3816 |
|
3817 |
/* XXX: hack to restore env in all cases, even if not called from
|
3818 |
generated code */
|
3819 |
saved_env = env; |
3820 |
env = cpu_single_env; |
3821 |
|
3822 |
ret = cpu_x86_handle_mmu_fault(env, addr, is_write, is_user, 1);
|
3823 |
if (ret) {
|
3824 |
if (retaddr) {
|
3825 |
/* now we have a real cpu fault */
|
3826 |
pc = (unsigned long)retaddr; |
3827 |
tb = tb_find_pc(pc); |
3828 |
if (tb) {
|
3829 |
/* the PC is inside the translated code. It means that we have
|
3830 |
a virtual CPU fault */
|
3831 |
cpu_restore_state(tb, env, pc, NULL);
|
3832 |
} |
3833 |
} |
3834 |
if (retaddr)
|
3835 |
raise_exception_err(env->exception_index, env->error_code); |
3836 |
else
|
3837 |
raise_exception_err_norestore(env->exception_index, env->error_code); |
3838 |
} |
3839 |
env = saved_env; |
3840 |
} |