d80c7d1c47
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2374 c046a42c-6fe2-441c-8c8c-71466251a162
3841 lines
108 KiB
C
3841 lines
108 KiB
C
/*
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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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//#define DEBUG_PCALL
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#if 0
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#define raise_exception_err(a, b)\
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do {\
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if (logfile)\
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fprintf(logfile, "raise_exception line=%d\n", __LINE__);\
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(raise_exception_err)(a, b);\
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} while (0)
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#endif
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const uint8_t parity_table[256] = {
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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};
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/* modulo 17 table */
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const uint8_t rclw_table[32] = {
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0, 1, 2, 3, 4, 5, 6, 7,
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8, 9,10,11,12,13,14,15,
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16, 0, 1, 2, 3, 4, 5, 6,
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7, 8, 9,10,11,12,13,14,
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};
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/* modulo 9 table */
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const uint8_t rclb_table[32] = {
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0, 1, 2, 3, 4, 5, 6, 7,
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8, 0, 1, 2, 3, 4, 5, 6,
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7, 8, 0, 1, 2, 3, 4, 5,
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6, 7, 8, 0, 1, 2, 3, 4,
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};
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const CPU86_LDouble f15rk[7] =
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{
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0.00000000000000000000L,
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1.00000000000000000000L,
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3.14159265358979323851L, /*pi*/
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0.30102999566398119523L, /*lg2*/
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0.69314718055994530943L, /*ln2*/
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1.44269504088896340739L, /*l2e*/
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3.32192809488736234781L, /*l2t*/
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};
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/* 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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#define SWITCH_TSS_JMP 0
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#define SWITCH_TSS_IRET 1
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#define SWITCH_TSS_CALL 2
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/* XXX: restore CPU state in registers (PowerPC case) */
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static void switch_tss(int tss_selector,
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uint32_t e1, uint32_t e2, int source,
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uint32_t next_eip)
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{
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int tss_limit, tss_limit_max, type, old_tss_limit_max, old_type, v1, v2, i;
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target_ulong tss_base;
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uint32_t new_regs[8], new_segs[6];
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uint32_t new_eflags, new_eip, new_cr3, new_ldt, new_trap;
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uint32_t old_eflags, eflags_mask;
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SegmentCache *dt;
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int index;
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target_ulong ptr;
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type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
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#ifdef DEBUG_PCALL
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if (loglevel & CPU_LOG_PCALL)
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fprintf(logfile, "switch_tss: sel=0x%04x type=%d src=%d\n", tss_selector, type, source);
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#endif
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/* if task gate, we read the TSS segment and we load it */
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if (type == 5) {
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if (!(e2 & DESC_P_MASK))
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raise_exception_err(EXCP0B_NOSEG, tss_selector & 0xfffc);
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tss_selector = e1 >> 16;
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if (tss_selector & 4)
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raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
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if (load_segment(&e1, &e2, tss_selector) != 0)
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raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
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if (e2 & DESC_S_MASK)
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raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
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type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
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if ((type & 7) != 1)
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raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
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}
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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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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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/* read all the registers from the new TSS */
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if (type & 8) {
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/* 32 bit */
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new_cr3 = ldl_kernel(tss_base + 0x1c);
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new_eip = ldl_kernel(tss_base + 0x20);
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new_eflags = ldl_kernel(tss_base + 0x24);
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for(i = 0; i < 8; i++)
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new_regs[i] = ldl_kernel(tss_base + (0x28 + i * 4));
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for(i = 0; i < 6; i++)
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new_segs[i] = lduw_kernel(tss_base + (0x48 + i * 4));
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new_ldt = lduw_kernel(tss_base + 0x60);
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new_trap = ldl_kernel(tss_base + 0x64);
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} else {
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/* 16 bit */
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new_cr3 = 0;
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new_eip = lduw_kernel(tss_base + 0x0e);
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new_eflags = lduw_kernel(tss_base + 0x10);
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for(i = 0; i < 8; i++)
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new_regs[i] = lduw_kernel(tss_base + (0x12 + i * 2)) | 0xffff0000;
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for(i = 0; i < 4; i++)
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new_segs[i] = lduw_kernel(tss_base + (0x22 + i * 4));
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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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}
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/* NOTE: we must avoid memory exceptions during the task switch,
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so we make dummy accesses before */
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/* XXX: it can still fail in some cases, so a bigger hack is
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necessary to valid the TLB after having done the accesses */
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v1 = ldub_kernel(env->tr.base);
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v2 = ldub_kernel(env->tr.base + old_tss_limit_max);
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stb_kernel(env->tr.base, v1);
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stb_kernel(env->tr.base + old_tss_limit_max, v2);
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/* clear busy bit (it is restartable) */
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if (source == SWITCH_TSS_JMP || source == SWITCH_TSS_IRET) {
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target_ulong ptr;
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uint32_t e2;
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ptr = env->gdt.base + (env->tr.selector & ~7);
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e2 = ldl_kernel(ptr + 4);
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e2 &= ~DESC_TSS_BUSY_MASK;
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stl_kernel(ptr + 4, e2);
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}
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old_eflags = compute_eflags();
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if (source == SWITCH_TSS_IRET)
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old_eflags &= ~NT_MASK;
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/* save the current state in the old TSS */
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if (type & 8) {
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/* 32 bit */
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stl_kernel(env->tr.base + 0x20, next_eip);
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stl_kernel(env->tr.base + 0x24, old_eflags);
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stl_kernel(env->tr.base + (0x28 + 0 * 4), EAX);
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stl_kernel(env->tr.base + (0x28 + 1 * 4), ECX);
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stl_kernel(env->tr.base + (0x28 + 2 * 4), EDX);
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stl_kernel(env->tr.base + (0x28 + 3 * 4), EBX);
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stl_kernel(env->tr.base + (0x28 + 4 * 4), ESP);
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stl_kernel(env->tr.base + (0x28 + 5 * 4), EBP);
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stl_kernel(env->tr.base + (0x28 + 6 * 4), ESI);
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stl_kernel(env->tr.base + (0x28 + 7 * 4), EDI);
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for(i = 0; i < 6; i++)
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stw_kernel(env->tr.base + (0x48 + i * 4), env->segs[i].selector);
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} else {
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/* 16 bit */
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stw_kernel(env->tr.base + 0x0e, next_eip);
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stw_kernel(env->tr.base + 0x10, old_eflags);
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stw_kernel(env->tr.base + (0x12 + 0 * 2), EAX);
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stw_kernel(env->tr.base + (0x12 + 1 * 2), ECX);
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stw_kernel(env->tr.base + (0x12 + 2 * 2), EDX);
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stw_kernel(env->tr.base + (0x12 + 3 * 2), EBX);
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stw_kernel(env->tr.base + (0x12 + 4 * 2), ESP);
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stw_kernel(env->tr.base + (0x12 + 5 * 2), EBP);
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stw_kernel(env->tr.base + (0x12 + 6 * 2), ESI);
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stw_kernel(env->tr.base + (0x12 + 7 * 2), EDI);
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for(i = 0; i < 4; i++)
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stw_kernel(env->tr.base + (0x22 + i * 4), env->segs[i].selector);
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}
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/* now if an exception occurs, it will occurs in the next task
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context */
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if (source == SWITCH_TSS_CALL) {
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stw_kernel(tss_base, env->tr.selector);
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new_eflags |= NT_MASK;
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}
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/* set busy bit */
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if (source == SWITCH_TSS_JMP || source == SWITCH_TSS_CALL) {
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target_ulong ptr;
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uint32_t e2;
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ptr = env->gdt.base + (tss_selector & ~7);
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e2 = ldl_kernel(ptr + 4);
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e2 |= DESC_TSS_BUSY_MASK;
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stl_kernel(ptr + 4, e2);
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}
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/* set the new CPU state */
|
|
/* from this point, any exception which occurs can give problems */
|
|
env->cr[0] |= CR0_TS_MASK;
|
|
env->hflags |= HF_TS_MASK;
|
|
env->tr.selector = tss_selector;
|
|
env->tr.base = tss_base;
|
|
env->tr.limit = tss_limit;
|
|
env->tr.flags = e2 & ~DESC_TSS_BUSY_MASK;
|
|
|
|
if ((type & 8) && (env->cr[0] & CR0_PG_MASK)) {
|
|
cpu_x86_update_cr3(env, new_cr3);
|
|
}
|
|
|
|
/* load all registers without an exception, then reload them with
|
|
possible exception */
|
|
env->eip = new_eip;
|
|
eflags_mask = TF_MASK | AC_MASK | ID_MASK |
|
|
IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK;
|
|
if (!(type & 8))
|
|
eflags_mask &= 0xffff;
|
|
load_eflags(new_eflags, eflags_mask);
|
|
/* XXX: what to do in 16 bit case ? */
|
|
EAX = new_regs[0];
|
|
ECX = new_regs[1];
|
|
EDX = new_regs[2];
|
|
EBX = new_regs[3];
|
|
ESP = new_regs[4];
|
|
EBP = new_regs[5];
|
|
ESI = new_regs[6];
|
|
EDI = new_regs[7];
|
|
if (new_eflags & VM_MASK) {
|
|
for(i = 0; i < 6; i++)
|
|
load_seg_vm(i, new_segs[i]);
|
|
/* in vm86, CPL is always 3 */
|
|
cpu_x86_set_cpl(env, 3);
|
|
} else {
|
|
/* CPL is set the RPL of CS */
|
|
cpu_x86_set_cpl(env, new_segs[R_CS] & 3);
|
|
/* first just selectors as the rest may trigger exceptions */
|
|
for(i = 0; i < 6; i++)
|
|
cpu_x86_load_seg_cache(env, i, new_segs[i], 0, 0, 0);
|
|
}
|
|
|
|
env->ldt.selector = new_ldt & ~4;
|
|
env->ldt.base = 0;
|
|
env->ldt.limit = 0;
|
|
env->ldt.flags = 0;
|
|
|
|
/* load the LDT */
|
|
if (new_ldt & 4)
|
|
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
|
|
|
if ((new_ldt & 0xfffc) != 0) {
|
|
dt = &env->gdt;
|
|
index = new_ldt & ~7;
|
|
if ((index + 7) > dt->limit)
|
|
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
|
ptr = dt->base + index;
|
|
e1 = ldl_kernel(ptr);
|
|
e2 = ldl_kernel(ptr + 4);
|
|
if ((e2 & DESC_S_MASK) || ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2)
|
|
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
|
load_seg_cache_raw_dt(&env->ldt, e1, e2);
|
|
}
|
|
|
|
/* load the segments */
|
|
if (!(new_eflags & VM_MASK)) {
|
|
tss_load_seg(R_CS, new_segs[R_CS]);
|
|
tss_load_seg(R_SS, new_segs[R_SS]);
|
|
tss_load_seg(R_ES, new_segs[R_ES]);
|
|
tss_load_seg(R_DS, new_segs[R_DS]);
|
|
tss_load_seg(R_FS, new_segs[R_FS]);
|
|
tss_load_seg(R_GS, new_segs[R_GS]);
|
|
}
|
|
|
|
/* check that EIP is in the CS segment limits */
|
|
if (new_eip > env->segs[R_CS].limit) {
|
|
/* XXX: different exception if CALL ? */
|
|
raise_exception_err(EXCP0D_GPF, 0);
|
|
}
|
|
}
|
|
|
|
/* check if Port I/O is allowed in TSS */
|
|
static inline void check_io(int addr, int size)
|
|
{
|
|
int io_offset, val, mask;
|
|
|
|
/* TSS must be a valid 32 bit one */
|
|
if (!(env->tr.flags & DESC_P_MASK) ||
|
|
((env->tr.flags >> DESC_TYPE_SHIFT) & 0xf) != 9 ||
|
|
env->tr.limit < 103)
|
|
goto fail;
|
|
io_offset = lduw_kernel(env->tr.base + 0x66);
|
|
io_offset += (addr >> 3);
|
|
/* Note: the check needs two bytes */
|
|
if ((io_offset + 1) > env->tr.limit)
|
|
goto fail;
|
|
val = lduw_kernel(env->tr.base + io_offset);
|
|
val >>= (addr & 7);
|
|
mask = (1 << size) - 1;
|
|
/* all bits must be zero to allow the I/O */
|
|
if ((val & mask) != 0) {
|
|
fail:
|
|
raise_exception_err(EXCP0D_GPF, 0);
|
|
}
|
|
}
|
|
|
|
void check_iob_T0(void)
|
|
{
|
|
check_io(T0, 1);
|
|
}
|
|
|
|
void check_iow_T0(void)
|
|
{
|
|
check_io(T0, 2);
|
|
}
|
|
|
|
void check_iol_T0(void)
|
|
{
|
|
check_io(T0, 4);
|
|
}
|
|
|
|
void check_iob_DX(void)
|
|
{
|
|
check_io(EDX & 0xffff, 1);
|
|
}
|
|
|
|
void check_iow_DX(void)
|
|
{
|
|
check_io(EDX & 0xffff, 2);
|
|
}
|
|
|
|
void check_iol_DX(void)
|
|
{
|
|
check_io(EDX & 0xffff, 4);
|
|
}
|
|
|
|
static inline unsigned int get_sp_mask(unsigned int e2)
|
|
{
|
|
if (e2 & DESC_B_MASK)
|
|
return 0xffffffff;
|
|
else
|
|
return 0xffff;
|
|
}
|
|
|
|
#ifdef TARGET_X86_64
|
|
#define SET_ESP(val, sp_mask)\
|
|
do {\
|
|
if ((sp_mask) == 0xffff)\
|
|
ESP = (ESP & ~0xffff) | ((val) & 0xffff);\
|
|
else if ((sp_mask) == 0xffffffffLL)\
|
|
ESP = (uint32_t)(val);\
|
|
else\
|
|
ESP = (val);\
|
|
} while (0)
|
|
#else
|
|
#define SET_ESP(val, sp_mask) ESP = (ESP & ~(sp_mask)) | ((val) & (sp_mask))
|
|
#endif
|
|
|
|
/* XXX: add a is_user flag to have proper security support */
|
|
#define PUSHW(ssp, sp, sp_mask, val)\
|
|
{\
|
|
sp -= 2;\
|
|
stw_kernel((ssp) + (sp & (sp_mask)), (val));\
|
|
}
|
|
|
|
#define PUSHL(ssp, sp, sp_mask, val)\
|
|
{\
|
|
sp -= 4;\
|
|
stl_kernel((ssp) + (sp & (sp_mask)), (val));\
|
|
}
|
|
|
|
#define POPW(ssp, sp, sp_mask, val)\
|
|
{\
|
|
val = lduw_kernel((ssp) + (sp & (sp_mask)));\
|
|
sp += 2;\
|
|
}
|
|
|
|
#define POPL(ssp, sp, sp_mask, val)\
|
|
{\
|
|
val = (uint32_t)ldl_kernel((ssp) + (sp & (sp_mask)));\
|
|
sp += 4;\
|
|
}
|
|
|
|
/* protected mode interrupt */
|
|
static void do_interrupt_protected(int intno, int is_int, int error_code,
|
|
unsigned int next_eip, int is_hw)
|
|
{
|
|
SegmentCache *dt;
|
|
target_ulong ptr, ssp;
|
|
int type, dpl, selector, ss_dpl, cpl;
|
|
int has_error_code, new_stack, shift;
|
|
uint32_t e1, e2, offset, ss, esp, ss_e1, ss_e2;
|
|
uint32_t old_eip, sp_mask;
|
|
|
|
has_error_code = 0;
|
|
if (!is_int && !is_hw) {
|
|
switch(intno) {
|
|
case 8:
|
|
case 10:
|
|
case 11:
|
|
case 12:
|
|
case 13:
|
|
case 14:
|
|
case 17:
|
|
has_error_code = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (is_int)
|
|
old_eip = next_eip;
|
|
else
|
|
old_eip = env->eip;
|
|
|
|
dt = &env->idt;
|
|
if (intno * 8 + 7 > dt->limit)
|
|
raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
|
|
ptr = dt->base + intno * 8;
|
|
e1 = ldl_kernel(ptr);
|
|
e2 = ldl_kernel(ptr + 4);
|
|
/* check gate type */
|
|
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
|
switch(type) {
|
|
case 5: /* task gate */
|
|
/* must do that check here to return the correct error code */
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2);
|
|
switch_tss(intno * 8, e1, e2, SWITCH_TSS_CALL, old_eip);
|
|
if (has_error_code) {
|
|
int type;
|
|
uint32_t mask;
|
|
/* push the error code */
|
|
type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
|
|
shift = type >> 3;
|
|
if (env->segs[R_SS].flags & DESC_B_MASK)
|
|
mask = 0xffffffff;
|
|
else
|
|
mask = 0xffff;
|
|
esp = (ESP - (2 << shift)) & mask;
|
|
ssp = env->segs[R_SS].base + esp;
|
|
if (shift)
|
|
stl_kernel(ssp, error_code);
|
|
else
|
|
stw_kernel(ssp, error_code);
|
|
SET_ESP(esp, mask);
|
|
}
|
|
return;
|
|
case 6: /* 286 interrupt gate */
|
|
case 7: /* 286 trap gate */
|
|
case 14: /* 386 interrupt gate */
|
|
case 15: /* 386 trap gate */
|
|
break;
|
|
default:
|
|
raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
|
|
break;
|
|
}
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
cpl = env->hflags & HF_CPL_MASK;
|
|
/* check privledge if software int */
|
|
if (is_int && dpl < cpl)
|
|
raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
|
|
/* check valid bit */
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2);
|
|
selector = e1 >> 16;
|
|
offset = (e2 & 0xffff0000) | (e1 & 0x0000ffff);
|
|
if ((selector & 0xfffc) == 0)
|
|
raise_exception_err(EXCP0D_GPF, 0);
|
|
|
|
if (load_segment(&e1, &e2, selector) != 0)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
if (dpl > cpl)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
|
if (!(e2 & DESC_C_MASK) && dpl < cpl) {
|
|
/* to inner priviledge */
|
|
get_ss_esp_from_tss(&ss, &esp, dpl);
|
|
if ((ss & 0xfffc) == 0)
|
|
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
|
if ((ss & 3) != dpl)
|
|
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
|
if (load_segment(&ss_e1, &ss_e2, ss) != 0)
|
|
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
|
ss_dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
|
if (ss_dpl != dpl)
|
|
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
|
if (!(ss_e2 & DESC_S_MASK) ||
|
|
(ss_e2 & DESC_CS_MASK) ||
|
|
!(ss_e2 & DESC_W_MASK))
|
|
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
|
if (!(ss_e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
|
new_stack = 1;
|
|
sp_mask = get_sp_mask(ss_e2);
|
|
ssp = get_seg_base(ss_e1, ss_e2);
|
|
} else if ((e2 & DESC_C_MASK) || dpl == cpl) {
|
|
/* to same priviledge */
|
|
if (env->eflags & VM_MASK)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
new_stack = 0;
|
|
sp_mask = get_sp_mask(env->segs[R_SS].flags);
|
|
ssp = env->segs[R_SS].base;
|
|
esp = ESP;
|
|
dpl = cpl;
|
|
} else {
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
new_stack = 0; /* avoid warning */
|
|
sp_mask = 0; /* avoid warning */
|
|
ssp = 0; /* avoid warning */
|
|
esp = 0; /* avoid warning */
|
|
}
|
|
|
|
shift = type >> 3;
|
|
|
|
#if 0
|
|
/* XXX: check that enough room is available */
|
|
push_size = 6 + (new_stack << 2) + (has_error_code << 1);
|
|
if (env->eflags & VM_MASK)
|
|
push_size += 8;
|
|
push_size <<= shift;
|
|
#endif
|
|
if (shift == 1) {
|
|
if (new_stack) {
|
|
if (env->eflags & VM_MASK) {
|
|
PUSHL(ssp, esp, sp_mask, env->segs[R_GS].selector);
|
|
PUSHL(ssp, esp, sp_mask, env->segs[R_FS].selector);
|
|
PUSHL(ssp, esp, sp_mask, env->segs[R_DS].selector);
|
|
PUSHL(ssp, esp, sp_mask, env->segs[R_ES].selector);
|
|
}
|
|
PUSHL(ssp, esp, sp_mask, env->segs[R_SS].selector);
|
|
PUSHL(ssp, esp, sp_mask, ESP);
|
|
}
|
|
PUSHL(ssp, esp, sp_mask, compute_eflags());
|
|
PUSHL(ssp, esp, sp_mask, env->segs[R_CS].selector);
|
|
PUSHL(ssp, esp, sp_mask, old_eip);
|
|
if (has_error_code) {
|
|
PUSHL(ssp, esp, sp_mask, error_code);
|
|
}
|
|
} else {
|
|
if (new_stack) {
|
|
if (env->eflags & VM_MASK) {
|
|
PUSHW(ssp, esp, sp_mask, env->segs[R_GS].selector);
|
|
PUSHW(ssp, esp, sp_mask, env->segs[R_FS].selector);
|
|
PUSHW(ssp, esp, sp_mask, env->segs[R_DS].selector);
|
|
PUSHW(ssp, esp, sp_mask, env->segs[R_ES].selector);
|
|
}
|
|
PUSHW(ssp, esp, sp_mask, env->segs[R_SS].selector);
|
|
PUSHW(ssp, esp, sp_mask, ESP);
|
|
}
|
|
PUSHW(ssp, esp, sp_mask, compute_eflags());
|
|
PUSHW(ssp, esp, sp_mask, env->segs[R_CS].selector);
|
|
PUSHW(ssp, esp, sp_mask, old_eip);
|
|
if (has_error_code) {
|
|
PUSHW(ssp, esp, sp_mask, error_code);
|
|
}
|
|
}
|
|
|
|
if (new_stack) {
|
|
if (env->eflags & VM_MASK) {
|
|
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0, 0);
|
|
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0, 0);
|
|
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0, 0);
|
|
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0, 0);
|
|
}
|
|
ss = (ss & ~3) | dpl;
|
|
cpu_x86_load_seg_cache(env, R_SS, ss,
|
|
ssp, get_seg_limit(ss_e1, ss_e2), ss_e2);
|
|
}
|
|
SET_ESP(esp, sp_mask);
|
|
|
|
selector = (selector & ~3) | dpl;
|
|
cpu_x86_load_seg_cache(env, R_CS, selector,
|
|
get_seg_base(e1, e2),
|
|
get_seg_limit(e1, e2),
|
|
e2);
|
|
cpu_x86_set_cpl(env, dpl);
|
|
env->eip = offset;
|
|
|
|
/* interrupt gate clear IF mask */
|
|
if ((type & 1) == 0) {
|
|
env->eflags &= ~IF_MASK;
|
|
}
|
|
env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK);
|
|
}
|
|
|
|
#ifdef TARGET_X86_64
|
|
|
|
#define PUSHQ(sp, val)\
|
|
{\
|
|
sp -= 8;\
|
|
stq_kernel(sp, (val));\
|
|
}
|
|
|
|
#define POPQ(sp, val)\
|
|
{\
|
|
val = ldq_kernel(sp);\
|
|
sp += 8;\
|
|
}
|
|
|
|
static inline target_ulong get_rsp_from_tss(int level)
|
|
{
|
|
int index;
|
|
|
|
#if 0
|
|
printf("TR: base=" TARGET_FMT_lx " limit=%x\n",
|
|
env->tr.base, env->tr.limit);
|
|
#endif
|
|
|
|
if (!(env->tr.flags & DESC_P_MASK))
|
|
cpu_abort(env, "invalid tss");
|
|
index = 8 * level + 4;
|
|
if ((index + 7) > env->tr.limit)
|
|
raise_exception_err(EXCP0A_TSS, env->tr.selector & 0xfffc);
|
|
return ldq_kernel(env->tr.base + index);
|
|
}
|
|
|
|
/* 64 bit interrupt */
|
|
static void do_interrupt64(int intno, int is_int, int error_code,
|
|
target_ulong next_eip, int is_hw)
|
|
{
|
|
SegmentCache *dt;
|
|
target_ulong ptr;
|
|
int type, dpl, selector, cpl, ist;
|
|
int has_error_code, new_stack;
|
|
uint32_t e1, e2, e3, ss;
|
|
target_ulong old_eip, esp, offset;
|
|
|
|
has_error_code = 0;
|
|
if (!is_int && !is_hw) {
|
|
switch(intno) {
|
|
case 8:
|
|
case 10:
|
|
case 11:
|
|
case 12:
|
|
case 13:
|
|
case 14:
|
|
case 17:
|
|
has_error_code = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (is_int)
|
|
old_eip = next_eip;
|
|
else
|
|
old_eip = env->eip;
|
|
|
|
dt = &env->idt;
|
|
if (intno * 16 + 15 > dt->limit)
|
|
raise_exception_err(EXCP0D_GPF, intno * 16 + 2);
|
|
ptr = dt->base + intno * 16;
|
|
e1 = ldl_kernel(ptr);
|
|
e2 = ldl_kernel(ptr + 4);
|
|
e3 = ldl_kernel(ptr + 8);
|
|
/* check gate type */
|
|
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
|
switch(type) {
|
|
case 14: /* 386 interrupt gate */
|
|
case 15: /* 386 trap gate */
|
|
break;
|
|
default:
|
|
raise_exception_err(EXCP0D_GPF, intno * 16 + 2);
|
|
break;
|
|
}
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
cpl = env->hflags & HF_CPL_MASK;
|
|
/* check privledge if software int */
|
|
if (is_int && dpl < cpl)
|
|
raise_exception_err(EXCP0D_GPF, intno * 16 + 2);
|
|
/* check valid bit */
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0B_NOSEG, intno * 16 + 2);
|
|
selector = e1 >> 16;
|
|
offset = ((target_ulong)e3 << 32) | (e2 & 0xffff0000) | (e1 & 0x0000ffff);
|
|
ist = e2 & 7;
|
|
if ((selector & 0xfffc) == 0)
|
|
raise_exception_err(EXCP0D_GPF, 0);
|
|
|
|
if (load_segment(&e1, &e2, selector) != 0)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
if (dpl > cpl)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
|
if (!(e2 & DESC_L_MASK) || (e2 & DESC_B_MASK))
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
if ((!(e2 & DESC_C_MASK) && dpl < cpl) || ist != 0) {
|
|
/* to inner priviledge */
|
|
if (ist != 0)
|
|
esp = get_rsp_from_tss(ist + 3);
|
|
else
|
|
esp = get_rsp_from_tss(dpl);
|
|
esp &= ~0xfLL; /* align stack */
|
|
ss = 0;
|
|
new_stack = 1;
|
|
} else if ((e2 & DESC_C_MASK) || dpl == cpl) {
|
|
/* to same priviledge */
|
|
if (env->eflags & VM_MASK)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
new_stack = 0;
|
|
if (ist != 0)
|
|
esp = get_rsp_from_tss(ist + 3);
|
|
else
|
|
esp = ESP;
|
|
esp &= ~0xfLL; /* align stack */
|
|
dpl = cpl;
|
|
} else {
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
new_stack = 0; /* avoid warning */
|
|
esp = 0; /* avoid warning */
|
|
}
|
|
|
|
PUSHQ(esp, env->segs[R_SS].selector);
|
|
PUSHQ(esp, ESP);
|
|
PUSHQ(esp, compute_eflags());
|
|
PUSHQ(esp, env->segs[R_CS].selector);
|
|
PUSHQ(esp, old_eip);
|
|
if (has_error_code) {
|
|
PUSHQ(esp, error_code);
|
|
}
|
|
|
|
if (new_stack) {
|
|
ss = 0 | dpl;
|
|
cpu_x86_load_seg_cache(env, R_SS, ss, 0, 0, 0);
|
|
}
|
|
ESP = esp;
|
|
|
|
selector = (selector & ~3) | dpl;
|
|
cpu_x86_load_seg_cache(env, R_CS, selector,
|
|
get_seg_base(e1, e2),
|
|
get_seg_limit(e1, e2),
|
|
e2);
|
|
cpu_x86_set_cpl(env, dpl);
|
|
env->eip = offset;
|
|
|
|
/* interrupt gate clear IF mask */
|
|
if ((type & 1) == 0) {
|
|
env->eflags &= ~IF_MASK;
|
|
}
|
|
env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK);
|
|
}
|
|
#endif
|
|
|
|
void helper_syscall(int next_eip_addend)
|
|
{
|
|
int selector;
|
|
|
|
if (!(env->efer & MSR_EFER_SCE)) {
|
|
raise_exception_err(EXCP06_ILLOP, 0);
|
|
}
|
|
selector = (env->star >> 32) & 0xffff;
|
|
#ifdef TARGET_X86_64
|
|
if (env->hflags & HF_LMA_MASK) {
|
|
int code64;
|
|
|
|
ECX = env->eip + next_eip_addend;
|
|
env->regs[11] = compute_eflags();
|
|
|
|
code64 = env->hflags & HF_CS64_MASK;
|
|
|
|
cpu_x86_set_cpl(env, 0);
|
|
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
|
|
0, 0xffffffff,
|
|
DESC_G_MASK | DESC_P_MASK |
|
|
DESC_S_MASK |
|
|
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK);
|
|
cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc,
|
|
0, 0xffffffff,
|
|
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
|
|
DESC_S_MASK |
|
|
DESC_W_MASK | DESC_A_MASK);
|
|
env->eflags &= ~env->fmask;
|
|
if (code64)
|
|
env->eip = env->lstar;
|
|
else
|
|
env->eip = env->cstar;
|
|
} else
|
|
#endif
|
|
{
|
|
ECX = (uint32_t)(env->eip + next_eip_addend);
|
|
|
|
cpu_x86_set_cpl(env, 0);
|
|
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
|
|
0, 0xffffffff,
|
|
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
|
|
DESC_S_MASK |
|
|
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
|
|
cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc,
|
|
0, 0xffffffff,
|
|
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
|
|
DESC_S_MASK |
|
|
DESC_W_MASK | DESC_A_MASK);
|
|
env->eflags &= ~(IF_MASK | RF_MASK | VM_MASK);
|
|
env->eip = (uint32_t)env->star;
|
|
}
|
|
}
|
|
|
|
void helper_sysret(int dflag)
|
|
{
|
|
int cpl, selector;
|
|
|
|
if (!(env->efer & MSR_EFER_SCE)) {
|
|
raise_exception_err(EXCP06_ILLOP, 0);
|
|
}
|
|
cpl = env->hflags & HF_CPL_MASK;
|
|
if (!(env->cr[0] & CR0_PE_MASK) || cpl != 0) {
|
|
raise_exception_err(EXCP0D_GPF, 0);
|
|
}
|
|
selector = (env->star >> 48) & 0xffff;
|
|
#ifdef TARGET_X86_64
|
|
if (env->hflags & HF_LMA_MASK) {
|
|
if (dflag == 2) {
|
|
cpu_x86_load_seg_cache(env, R_CS, (selector + 16) | 3,
|
|
0, 0xffffffff,
|
|
DESC_G_MASK | DESC_P_MASK |
|
|
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
|
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK |
|
|
DESC_L_MASK);
|
|
env->eip = ECX;
|
|
} else {
|
|
cpu_x86_load_seg_cache(env, R_CS, selector | 3,
|
|
0, 0xffffffff,
|
|
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
|
|
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
|
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
|
|
env->eip = (uint32_t)ECX;
|
|
}
|
|
cpu_x86_load_seg_cache(env, R_SS, selector + 8,
|
|
0, 0xffffffff,
|
|
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
|
|
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
|
DESC_W_MASK | DESC_A_MASK);
|
|
load_eflags((uint32_t)(env->regs[11]), TF_MASK | AC_MASK | ID_MASK |
|
|
IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK);
|
|
cpu_x86_set_cpl(env, 3);
|
|
} else
|
|
#endif
|
|
{
|
|
cpu_x86_load_seg_cache(env, R_CS, selector | 3,
|
|
0, 0xffffffff,
|
|
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
|
|
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
|
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
|
|
env->eip = (uint32_t)ECX;
|
|
cpu_x86_load_seg_cache(env, R_SS, selector + 8,
|
|
0, 0xffffffff,
|
|
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
|
|
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
|
DESC_W_MASK | DESC_A_MASK);
|
|
env->eflags |= IF_MASK;
|
|
cpu_x86_set_cpl(env, 3);
|
|
}
|
|
#ifdef USE_KQEMU
|
|
if (kqemu_is_ok(env)) {
|
|
if (env->hflags & HF_LMA_MASK)
|
|
CC_OP = CC_OP_EFLAGS;
|
|
env->exception_index = -1;
|
|
cpu_loop_exit();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* real mode interrupt */
|
|
static void do_interrupt_real(int intno, int is_int, int error_code,
|
|
unsigned int next_eip)
|
|
{
|
|
SegmentCache *dt;
|
|
target_ulong ptr, ssp;
|
|
int selector;
|
|
uint32_t offset, esp;
|
|
uint32_t old_cs, old_eip;
|
|
|
|
/* real mode (simpler !) */
|
|
dt = &env->idt;
|
|
if (intno * 4 + 3 > dt->limit)
|
|
raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
|
|
ptr = dt->base + intno * 4;
|
|
offset = lduw_kernel(ptr);
|
|
selector = lduw_kernel(ptr + 2);
|
|
esp = ESP;
|
|
ssp = env->segs[R_SS].base;
|
|
if (is_int)
|
|
old_eip = next_eip;
|
|
else
|
|
old_eip = env->eip;
|
|
old_cs = env->segs[R_CS].selector;
|
|
/* XXX: use SS segment size ? */
|
|
PUSHW(ssp, esp, 0xffff, compute_eflags());
|
|
PUSHW(ssp, esp, 0xffff, old_cs);
|
|
PUSHW(ssp, esp, 0xffff, old_eip);
|
|
|
|
/* update processor state */
|
|
ESP = (ESP & ~0xffff) | (esp & 0xffff);
|
|
env->eip = offset;
|
|
env->segs[R_CS].selector = selector;
|
|
env->segs[R_CS].base = (selector << 4);
|
|
env->eflags &= ~(IF_MASK | TF_MASK | AC_MASK | RF_MASK);
|
|
}
|
|
|
|
/* fake user mode interrupt */
|
|
void do_interrupt_user(int intno, int is_int, int error_code,
|
|
target_ulong next_eip)
|
|
{
|
|
SegmentCache *dt;
|
|
target_ulong ptr;
|
|
int dpl, cpl;
|
|
uint32_t e2;
|
|
|
|
dt = &env->idt;
|
|
ptr = dt->base + (intno * 8);
|
|
e2 = ldl_kernel(ptr + 4);
|
|
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
cpl = env->hflags & HF_CPL_MASK;
|
|
/* check privledge if software int */
|
|
if (is_int && dpl < cpl)
|
|
raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
|
|
|
|
/* Since we emulate only user space, we cannot do more than
|
|
exiting the emulation with the suitable exception and error
|
|
code */
|
|
if (is_int)
|
|
EIP = next_eip;
|
|
}
|
|
|
|
/*
|
|
* Begin execution of an interruption. is_int is TRUE if coming from
|
|
* the int instruction. next_eip is the EIP value AFTER the interrupt
|
|
* instruction. It is only relevant if is_int is TRUE.
|
|
*/
|
|
void do_interrupt(int intno, int is_int, int error_code,
|
|
target_ulong next_eip, int is_hw)
|
|
{
|
|
if (loglevel & CPU_LOG_INT) {
|
|
if ((env->cr[0] & CR0_PE_MASK)) {
|
|
static int count;
|
|
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,
|
|
count, intno, error_code, is_int,
|
|
env->hflags & HF_CPL_MASK,
|
|
env->segs[R_CS].selector, EIP,
|
|
(int)env->segs[R_CS].base + EIP,
|
|
env->segs[R_SS].selector, ESP);
|
|
if (intno == 0x0e) {
|
|
fprintf(logfile, " CR2=" TARGET_FMT_lx, env->cr[2]);
|
|
} else {
|
|
fprintf(logfile, " EAX=" TARGET_FMT_lx, EAX);
|
|
}
|
|
fprintf(logfile, "\n");
|
|
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP);
|
|
#if 0
|
|
{
|
|
int i;
|
|
uint8_t *ptr;
|
|
fprintf(logfile, " code=");
|
|
ptr = env->segs[R_CS].base + env->eip;
|
|
for(i = 0; i < 16; i++) {
|
|
fprintf(logfile, " %02x", ldub(ptr + i));
|
|
}
|
|
fprintf(logfile, "\n");
|
|
}
|
|
#endif
|
|
count++;
|
|
}
|
|
}
|
|
if (env->cr[0] & CR0_PE_MASK) {
|
|
#if TARGET_X86_64
|
|
if (env->hflags & HF_LMA_MASK) {
|
|
do_interrupt64(intno, is_int, error_code, next_eip, is_hw);
|
|
} else
|
|
#endif
|
|
{
|
|
do_interrupt_protected(intno, is_int, error_code, next_eip, is_hw);
|
|
}
|
|
} else {
|
|
do_interrupt_real(intno, is_int, error_code, next_eip);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Signal an interruption. It is executed in the main CPU loop.
|
|
* is_int is TRUE if coming from the int instruction. next_eip is the
|
|
* EIP value AFTER the interrupt instruction. It is only relevant if
|
|
* is_int is TRUE.
|
|
*/
|
|
void raise_interrupt(int intno, int is_int, int error_code,
|
|
int next_eip_addend)
|
|
{
|
|
env->exception_index = intno;
|
|
env->error_code = error_code;
|
|
env->exception_is_int = is_int;
|
|
env->exception_next_eip = env->eip + next_eip_addend;
|
|
cpu_loop_exit();
|
|
}
|
|
|
|
/* same as raise_exception_err, but do not restore global registers */
|
|
static void raise_exception_err_norestore(int exception_index, int error_code)
|
|
{
|
|
env->exception_index = exception_index;
|
|
env->error_code = error_code;
|
|
env->exception_is_int = 0;
|
|
env->exception_next_eip = 0;
|
|
longjmp(env->jmp_env, 1);
|
|
}
|
|
|
|
/* shortcuts to generate exceptions */
|
|
|
|
void (raise_exception_err)(int exception_index, int error_code)
|
|
{
|
|
raise_interrupt(exception_index, 0, error_code, 0);
|
|
}
|
|
|
|
void raise_exception(int exception_index)
|
|
{
|
|
raise_interrupt(exception_index, 0, 0, 0);
|
|
}
|
|
|
|
/* SMM support */
|
|
|
|
#if defined(CONFIG_USER_ONLY)
|
|
|
|
void do_smm_enter(void)
|
|
{
|
|
}
|
|
|
|
void helper_rsm(void)
|
|
{
|
|
}
|
|
|
|
#else
|
|
|
|
#ifdef TARGET_X86_64
|
|
#define SMM_REVISION_ID 0x00020064
|
|
#else
|
|
#define SMM_REVISION_ID 0x00020000
|
|
#endif
|
|
|
|
void do_smm_enter(void)
|
|
{
|
|
target_ulong sm_state;
|
|
SegmentCache *dt;
|
|
int i, offset;
|
|
|
|
if (loglevel & CPU_LOG_INT) {
|
|
fprintf(logfile, "SMM: enter\n");
|
|
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP);
|
|
}
|
|
|
|
env->hflags |= HF_SMM_MASK;
|
|
cpu_smm_update(env);
|
|
|
|
sm_state = env->smbase + 0x8000;
|
|
|
|
#ifdef TARGET_X86_64
|
|
for(i = 0; i < 6; i++) {
|
|
dt = &env->segs[i];
|
|
offset = 0x7e00 + i * 16;
|
|
stw_phys(sm_state + offset, dt->selector);
|
|
stw_phys(sm_state + offset + 2, (dt->flags >> 8) & 0xf0ff);
|
|
stl_phys(sm_state + offset + 4, dt->limit);
|
|
stq_phys(sm_state + offset + 8, dt->base);
|
|
}
|
|
|
|
stq_phys(sm_state + 0x7e68, env->gdt.base);
|
|
stl_phys(sm_state + 0x7e64, env->gdt.limit);
|
|
|
|
stw_phys(sm_state + 0x7e70, env->ldt.selector);
|
|
stq_phys(sm_state + 0x7e78, env->ldt.base);
|
|
stl_phys(sm_state + 0x7e74, env->ldt.limit);
|
|
stw_phys(sm_state + 0x7e72, (env->ldt.flags >> 8) & 0xf0ff);
|
|
|
|
stq_phys(sm_state + 0x7e88, env->idt.base);
|
|
stl_phys(sm_state + 0x7e84, env->idt.limit);
|
|
|
|
stw_phys(sm_state + 0x7e90, env->tr.selector);
|
|
stq_phys(sm_state + 0x7e98, env->tr.base);
|
|
stl_phys(sm_state + 0x7e94, env->tr.limit);
|
|
stw_phys(sm_state + 0x7e92, (env->tr.flags >> 8) & 0xf0ff);
|
|
|
|
stq_phys(sm_state + 0x7ed0, env->efer);
|
|
|
|
stq_phys(sm_state + 0x7ff8, EAX);
|
|
stq_phys(sm_state + 0x7ff0, ECX);
|
|
stq_phys(sm_state + 0x7fe8, EDX);
|
|
stq_phys(sm_state + 0x7fe0, EBX);
|
|
stq_phys(sm_state + 0x7fd8, ESP);
|
|
stq_phys(sm_state + 0x7fd0, EBP);
|
|
stq_phys(sm_state + 0x7fc8, ESI);
|
|
stq_phys(sm_state + 0x7fc0, EDI);
|
|
for(i = 8; i < 16; i++)
|
|
stq_phys(sm_state + 0x7ff8 - i * 8, env->regs[i]);
|
|
stq_phys(sm_state + 0x7f78, env->eip);
|
|
stl_phys(sm_state + 0x7f70, compute_eflags());
|
|
stl_phys(sm_state + 0x7f68, env->dr[6]);
|
|
stl_phys(sm_state + 0x7f60, env->dr[7]);
|
|
|
|
stl_phys(sm_state + 0x7f48, env->cr[4]);
|
|
stl_phys(sm_state + 0x7f50, env->cr[3]);
|
|
stl_phys(sm_state + 0x7f58, env->cr[0]);
|
|
|
|
stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
|
|
stl_phys(sm_state + 0x7f00, env->smbase);
|
|
#else
|
|
stl_phys(sm_state + 0x7ffc, env->cr[0]);
|
|
stl_phys(sm_state + 0x7ff8, env->cr[3]);
|
|
stl_phys(sm_state + 0x7ff4, compute_eflags());
|
|
stl_phys(sm_state + 0x7ff0, env->eip);
|
|
stl_phys(sm_state + 0x7fec, EDI);
|
|
stl_phys(sm_state + 0x7fe8, ESI);
|
|
stl_phys(sm_state + 0x7fe4, EBP);
|
|
stl_phys(sm_state + 0x7fe0, ESP);
|
|
stl_phys(sm_state + 0x7fdc, EBX);
|
|
stl_phys(sm_state + 0x7fd8, EDX);
|
|
stl_phys(sm_state + 0x7fd4, ECX);
|
|
stl_phys(sm_state + 0x7fd0, EAX);
|
|
stl_phys(sm_state + 0x7fcc, env->dr[6]);
|
|
stl_phys(sm_state + 0x7fc8, env->dr[7]);
|
|
|
|
stl_phys(sm_state + 0x7fc4, env->tr.selector);
|
|
stl_phys(sm_state + 0x7f64, env->tr.base);
|
|
stl_phys(sm_state + 0x7f60, env->tr.limit);
|
|
stl_phys(sm_state + 0x7f5c, (env->tr.flags >> 8) & 0xf0ff);
|
|
|
|
stl_phys(sm_state + 0x7fc0, env->ldt.selector);
|
|
stl_phys(sm_state + 0x7f80, env->ldt.base);
|
|
stl_phys(sm_state + 0x7f7c, env->ldt.limit);
|
|
stl_phys(sm_state + 0x7f78, (env->ldt.flags >> 8) & 0xf0ff);
|
|
|
|
stl_phys(sm_state + 0x7f74, env->gdt.base);
|
|
stl_phys(sm_state + 0x7f70, env->gdt.limit);
|
|
|
|
stl_phys(sm_state + 0x7f58, env->idt.base);
|
|
stl_phys(sm_state + 0x7f54, env->idt.limit);
|
|
|
|
for(i = 0; i < 6; i++) {
|
|
dt = &env->segs[i];
|
|
if (i < 3)
|
|
offset = 0x7f84 + i * 12;
|
|
else
|
|
offset = 0x7f2c + (i - 3) * 12;
|
|
stl_phys(sm_state + 0x7fa8 + i * 4, dt->selector);
|
|
stl_phys(sm_state + offset + 8, dt->base);
|
|
stl_phys(sm_state + offset + 4, dt->limit);
|
|
stl_phys(sm_state + offset, (dt->flags >> 8) & 0xf0ff);
|
|
}
|
|
stl_phys(sm_state + 0x7f14, env->cr[4]);
|
|
|
|
stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
|
|
stl_phys(sm_state + 0x7ef8, env->smbase);
|
|
#endif
|
|
/* init SMM cpu state */
|
|
|
|
#ifdef TARGET_X86_64
|
|
env->efer = 0;
|
|
env->hflags &= ~HF_LMA_MASK;
|
|
#endif
|
|
load_eflags(0, ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
|
|
env->eip = 0x00008000;
|
|
cpu_x86_load_seg_cache(env, R_CS, (env->smbase >> 4) & 0xffff, env->smbase,
|
|
0xffffffff, 0);
|
|
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffffffff, 0);
|
|
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffffffff, 0);
|
|
cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffffffff, 0);
|
|
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffffffff, 0);
|
|
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffffffff, 0);
|
|
|
|
cpu_x86_update_cr0(env,
|
|
env->cr[0] & ~(CR0_PE_MASK | CR0_EM_MASK | CR0_TS_MASK | CR0_PG_MASK));
|
|
cpu_x86_update_cr4(env, 0);
|
|
env->dr[7] = 0x00000400;
|
|
CC_OP = CC_OP_EFLAGS;
|
|
}
|
|
|
|
void helper_rsm(void)
|
|
{
|
|
target_ulong sm_state;
|
|
int i, offset;
|
|
uint32_t val;
|
|
|
|
sm_state = env->smbase + 0x8000;
|
|
#ifdef TARGET_X86_64
|
|
env->efer = ldq_phys(sm_state + 0x7ed0);
|
|
if (env->efer & MSR_EFER_LMA)
|
|
env->hflags |= HF_LMA_MASK;
|
|
else
|
|
env->hflags &= ~HF_LMA_MASK;
|
|
|
|
for(i = 0; i < 6; i++) {
|
|
offset = 0x7e00 + i * 16;
|
|
cpu_x86_load_seg_cache(env, i,
|
|
lduw_phys(sm_state + offset),
|
|
ldq_phys(sm_state + offset + 8),
|
|
ldl_phys(sm_state + offset + 4),
|
|
(lduw_phys(sm_state + offset + 2) & 0xf0ff) << 8);
|
|
}
|
|
|
|
env->gdt.base = ldq_phys(sm_state + 0x7e68);
|
|
env->gdt.limit = ldl_phys(sm_state + 0x7e64);
|
|
|
|
env->ldt.selector = lduw_phys(sm_state + 0x7e70);
|
|
env->ldt.base = ldq_phys(sm_state + 0x7e78);
|
|
env->ldt.limit = ldl_phys(sm_state + 0x7e74);
|
|
env->ldt.flags = (lduw_phys(sm_state + 0x7e72) & 0xf0ff) << 8;
|
|
|
|
env->idt.base = ldq_phys(sm_state + 0x7e88);
|
|
env->idt.limit = ldl_phys(sm_state + 0x7e84);
|
|
|
|
env->tr.selector = lduw_phys(sm_state + 0x7e90);
|
|
env->tr.base = ldq_phys(sm_state + 0x7e98);
|
|
env->tr.limit = ldl_phys(sm_state + 0x7e94);
|
|
env->tr.flags = (lduw_phys(sm_state + 0x7e92) & 0xf0ff) << 8;
|
|
|
|
EAX = ldq_phys(sm_state + 0x7ff8);
|
|
ECX = ldq_phys(sm_state + 0x7ff0);
|
|
EDX = ldq_phys(sm_state + 0x7fe8);
|
|
EBX = ldq_phys(sm_state + 0x7fe0);
|
|
ESP = ldq_phys(sm_state + 0x7fd8);
|
|
EBP = ldq_phys(sm_state + 0x7fd0);
|
|
ESI = ldq_phys(sm_state + 0x7fc8);
|
|
EDI = ldq_phys(sm_state + 0x7fc0);
|
|
for(i = 8; i < 16; i++)
|
|
env->regs[i] = ldq_phys(sm_state + 0x7ff8 - i * 8);
|
|
env->eip = ldq_phys(sm_state + 0x7f78);
|
|
load_eflags(ldl_phys(sm_state + 0x7f70),
|
|
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
|
|
env->dr[6] = ldl_phys(sm_state + 0x7f68);
|
|
env->dr[7] = ldl_phys(sm_state + 0x7f60);
|
|
|
|
cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f48));
|
|
cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7f50));
|
|
cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7f58));
|
|
|
|
val = ldl_phys(sm_state + 0x7efc); /* revision ID */
|
|
if (val & 0x20000) {
|
|
env->smbase = ldl_phys(sm_state + 0x7f00) & ~0x7fff;
|
|
}
|
|
#else
|
|
cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7ffc));
|
|
cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7ff8));
|
|
load_eflags(ldl_phys(sm_state + 0x7ff4),
|
|
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
|
|
env->eip = ldl_phys(sm_state + 0x7ff0);
|
|
EDI = ldl_phys(sm_state + 0x7fec);
|
|
ESI = ldl_phys(sm_state + 0x7fe8);
|
|
EBP = ldl_phys(sm_state + 0x7fe4);
|
|
ESP = ldl_phys(sm_state + 0x7fe0);
|
|
EBX = ldl_phys(sm_state + 0x7fdc);
|
|
EDX = ldl_phys(sm_state + 0x7fd8);
|
|
ECX = ldl_phys(sm_state + 0x7fd4);
|
|
EAX = ldl_phys(sm_state + 0x7fd0);
|
|
env->dr[6] = ldl_phys(sm_state + 0x7fcc);
|
|
env->dr[7] = ldl_phys(sm_state + 0x7fc8);
|
|
|
|
env->tr.selector = ldl_phys(sm_state + 0x7fc4) & 0xffff;
|
|
env->tr.base = ldl_phys(sm_state + 0x7f64);
|
|
env->tr.limit = ldl_phys(sm_state + 0x7f60);
|
|
env->tr.flags = (ldl_phys(sm_state + 0x7f5c) & 0xf0ff) << 8;
|
|
|
|
env->ldt.selector = ldl_phys(sm_state + 0x7fc0) & 0xffff;
|
|
env->ldt.base = ldl_phys(sm_state + 0x7f80);
|
|
env->ldt.limit = ldl_phys(sm_state + 0x7f7c);
|
|
env->ldt.flags = (ldl_phys(sm_state + 0x7f78) & 0xf0ff) << 8;
|
|
|
|
env->gdt.base = ldl_phys(sm_state + 0x7f74);
|
|
env->gdt.limit = ldl_phys(sm_state + 0x7f70);
|
|
|
|
env->idt.base = ldl_phys(sm_state + 0x7f58);
|
|
env->idt.limit = ldl_phys(sm_state + 0x7f54);
|
|
|
|
for(i = 0; i < 6; i++) {
|
|
if (i < 3)
|
|
offset = 0x7f84 + i * 12;
|
|
else
|
|
offset = 0x7f2c + (i - 3) * 12;
|
|
cpu_x86_load_seg_cache(env, i,
|
|
ldl_phys(sm_state + 0x7fa8 + i * 4) & 0xffff,
|
|
ldl_phys(sm_state + offset + 8),
|
|
ldl_phys(sm_state + offset + 4),
|
|
(ldl_phys(sm_state + offset) & 0xf0ff) << 8);
|
|
}
|
|
cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f14));
|
|
|
|
val = ldl_phys(sm_state + 0x7efc); /* revision ID */
|
|
if (val & 0x20000) {
|
|
env->smbase = ldl_phys(sm_state + 0x7ef8) & ~0x7fff;
|
|
}
|
|
#endif
|
|
CC_OP = CC_OP_EFLAGS;
|
|
env->hflags &= ~HF_SMM_MASK;
|
|
cpu_smm_update(env);
|
|
|
|
if (loglevel & CPU_LOG_INT) {
|
|
fprintf(logfile, "SMM: after RSM\n");
|
|
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP);
|
|
}
|
|
}
|
|
|
|
#endif /* !CONFIG_USER_ONLY */
|
|
|
|
|
|
#ifdef BUGGY_GCC_DIV64
|
|
/* gcc 2.95.4 on PowerPC does not seem to like using __udivdi3, so we
|
|
call it from another function */
|
|
uint32_t div32(uint64_t *q_ptr, uint64_t num, uint32_t den)
|
|
{
|
|
*q_ptr = num / den;
|
|
return num % den;
|
|
}
|
|
|
|
int32_t idiv32(int64_t *q_ptr, int64_t num, int32_t den)
|
|
{
|
|
*q_ptr = num / den;
|
|
return num % den;
|
|
}
|
|
#endif
|
|
|
|
void helper_divl_EAX_T0(void)
|
|
{
|
|
unsigned int den, r;
|
|
uint64_t num, q;
|
|
|
|
num = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
|
den = T0;
|
|
if (den == 0) {
|
|
raise_exception(EXCP00_DIVZ);
|
|
}
|
|
#ifdef BUGGY_GCC_DIV64
|
|
r = div32(&q, num, den);
|
|
#else
|
|
q = (num / den);
|
|
r = (num % den);
|
|
#endif
|
|
if (q > 0xffffffff)
|
|
raise_exception(EXCP00_DIVZ);
|
|
EAX = (uint32_t)q;
|
|
EDX = (uint32_t)r;
|
|
}
|
|
|
|
void helper_idivl_EAX_T0(void)
|
|
{
|
|
int den, r;
|
|
int64_t num, q;
|
|
|
|
num = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
|
den = T0;
|
|
if (den == 0) {
|
|
raise_exception(EXCP00_DIVZ);
|
|
}
|
|
#ifdef BUGGY_GCC_DIV64
|
|
r = idiv32(&q, num, den);
|
|
#else
|
|
q = (num / den);
|
|
r = (num % den);
|
|
#endif
|
|
if (q != (int32_t)q)
|
|
raise_exception(EXCP00_DIVZ);
|
|
EAX = (uint32_t)q;
|
|
EDX = (uint32_t)r;
|
|
}
|
|
|
|
void helper_cmpxchg8b(void)
|
|
{
|
|
uint64_t d;
|
|
int eflags;
|
|
|
|
eflags = cc_table[CC_OP].compute_all();
|
|
d = ldq(A0);
|
|
if (d == (((uint64_t)EDX << 32) | EAX)) {
|
|
stq(A0, ((uint64_t)ECX << 32) | EBX);
|
|
eflags |= CC_Z;
|
|
} else {
|
|
EDX = d >> 32;
|
|
EAX = d;
|
|
eflags &= ~CC_Z;
|
|
}
|
|
CC_SRC = eflags;
|
|
}
|
|
|
|
void helper_cpuid(void)
|
|
{
|
|
uint32_t index;
|
|
index = (uint32_t)EAX;
|
|
|
|
/* test if maximum index reached */
|
|
if (index & 0x80000000) {
|
|
if (index > env->cpuid_xlevel)
|
|
index = env->cpuid_level;
|
|
} else {
|
|
if (index > env->cpuid_level)
|
|
index = env->cpuid_level;
|
|
}
|
|
|
|
switch(index) {
|
|
case 0:
|
|
EAX = env->cpuid_level;
|
|
EBX = env->cpuid_vendor1;
|
|
EDX = env->cpuid_vendor2;
|
|
ECX = env->cpuid_vendor3;
|
|
break;
|
|
case 1:
|
|
EAX = env->cpuid_version;
|
|
EBX = 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */
|
|
ECX = env->cpuid_ext_features;
|
|
EDX = env->cpuid_features;
|
|
break;
|
|
case 2:
|
|
/* cache info: needed for Pentium Pro compatibility */
|
|
EAX = 0x410601;
|
|
EBX = 0;
|
|
ECX = 0;
|
|
EDX = 0;
|
|
break;
|
|
case 0x80000000:
|
|
EAX = env->cpuid_xlevel;
|
|
EBX = env->cpuid_vendor1;
|
|
EDX = env->cpuid_vendor2;
|
|
ECX = env->cpuid_vendor3;
|
|
break;
|
|
case 0x80000001:
|
|
EAX = env->cpuid_features;
|
|
EBX = 0;
|
|
ECX = 0;
|
|
EDX = env->cpuid_ext2_features;
|
|
break;
|
|
case 0x80000002:
|
|
case 0x80000003:
|
|
case 0x80000004:
|
|
EAX = env->cpuid_model[(index - 0x80000002) * 4 + 0];
|
|
EBX = env->cpuid_model[(index - 0x80000002) * 4 + 1];
|
|
ECX = env->cpuid_model[(index - 0x80000002) * 4 + 2];
|
|
EDX = env->cpuid_model[(index - 0x80000002) * 4 + 3];
|
|
break;
|
|
case 0x80000005:
|
|
/* cache info (L1 cache) */
|
|
EAX = 0x01ff01ff;
|
|
EBX = 0x01ff01ff;
|
|
ECX = 0x40020140;
|
|
EDX = 0x40020140;
|
|
break;
|
|
case 0x80000006:
|
|
/* cache info (L2 cache) */
|
|
EAX = 0;
|
|
EBX = 0x42004200;
|
|
ECX = 0x02008140;
|
|
EDX = 0;
|
|
break;
|
|
case 0x80000008:
|
|
/* virtual & phys address size in low 2 bytes. */
|
|
EAX = 0x00003028;
|
|
EBX = 0;
|
|
ECX = 0;
|
|
EDX = 0;
|
|
break;
|
|
default:
|
|
/* reserved values: zero */
|
|
EAX = 0;
|
|
EBX = 0;
|
|
ECX = 0;
|
|
EDX = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
void helper_enter_level(int level, int data32)
|
|
{
|
|
target_ulong ssp;
|
|
uint32_t esp_mask, esp, ebp;
|
|
|
|
esp_mask = get_sp_mask(env->segs[R_SS].flags);
|
|
ssp = env->segs[R_SS].base;
|
|
ebp = EBP;
|
|
esp = ESP;
|
|
if (data32) {
|
|
/* 32 bit */
|
|
esp -= 4;
|
|
while (--level) {
|
|
esp -= 4;
|
|
ebp -= 4;
|
|
stl(ssp + (esp & esp_mask), ldl(ssp + (ebp & esp_mask)));
|
|
}
|
|
esp -= 4;
|
|
stl(ssp + (esp & esp_mask), T1);
|
|
} else {
|
|
/* 16 bit */
|
|
esp -= 2;
|
|
while (--level) {
|
|
esp -= 2;
|
|
ebp -= 2;
|
|
stw(ssp + (esp & esp_mask), lduw(ssp + (ebp & esp_mask)));
|
|
}
|
|
esp -= 2;
|
|
stw(ssp + (esp & esp_mask), T1);
|
|
}
|
|
}
|
|
|
|
#ifdef TARGET_X86_64
|
|
void helper_enter64_level(int level, int data64)
|
|
{
|
|
target_ulong esp, ebp;
|
|
ebp = EBP;
|
|
esp = ESP;
|
|
|
|
if (data64) {
|
|
/* 64 bit */
|
|
esp -= 8;
|
|
while (--level) {
|
|
esp -= 8;
|
|
ebp -= 8;
|
|
stq(esp, ldq(ebp));
|
|
}
|
|
esp -= 8;
|
|
stq(esp, T1);
|
|
} else {
|
|
/* 16 bit */
|
|
esp -= 2;
|
|
while (--level) {
|
|
esp -= 2;
|
|
ebp -= 2;
|
|
stw(esp, lduw(ebp));
|
|
}
|
|
esp -= 2;
|
|
stw(esp, T1);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void helper_lldt_T0(void)
|
|
{
|
|
int selector;
|
|
SegmentCache *dt;
|
|
uint32_t e1, e2;
|
|
int index, entry_limit;
|
|
target_ulong ptr;
|
|
|
|
selector = T0 & 0xffff;
|
|
if ((selector & 0xfffc) == 0) {
|
|
/* XXX: NULL selector case: invalid LDT */
|
|
env->ldt.base = 0;
|
|
env->ldt.limit = 0;
|
|
} else {
|
|
if (selector & 0x4)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
dt = &env->gdt;
|
|
index = selector & ~7;
|
|
#ifdef TARGET_X86_64
|
|
if (env->hflags & HF_LMA_MASK)
|
|
entry_limit = 15;
|
|
else
|
|
#endif
|
|
entry_limit = 7;
|
|
if ((index + entry_limit) > dt->limit)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
ptr = dt->base + index;
|
|
e1 = ldl_kernel(ptr);
|
|
e2 = ldl_kernel(ptr + 4);
|
|
if ((e2 & DESC_S_MASK) || ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
|
#ifdef TARGET_X86_64
|
|
if (env->hflags & HF_LMA_MASK) {
|
|
uint32_t e3;
|
|
e3 = ldl_kernel(ptr + 8);
|
|
load_seg_cache_raw_dt(&env->ldt, e1, e2);
|
|
env->ldt.base |= (target_ulong)e3 << 32;
|
|
} else
|
|
#endif
|
|
{
|
|
load_seg_cache_raw_dt(&env->ldt, e1, e2);
|
|
}
|
|
}
|
|
env->ldt.selector = selector;
|
|
}
|
|
|
|
void helper_ltr_T0(void)
|
|
{
|
|
int selector;
|
|
SegmentCache *dt;
|
|
uint32_t e1, e2;
|
|
int index, type, entry_limit;
|
|
target_ulong ptr;
|
|
|
|
selector = T0 & 0xffff;
|
|
if ((selector & 0xfffc) == 0) {
|
|
/* NULL selector case: invalid TR */
|
|
env->tr.base = 0;
|
|
env->tr.limit = 0;
|
|
env->tr.flags = 0;
|
|
} else {
|
|
if (selector & 0x4)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
dt = &env->gdt;
|
|
index = selector & ~7;
|
|
#ifdef TARGET_X86_64
|
|
if (env->hflags & HF_LMA_MASK)
|
|
entry_limit = 15;
|
|
else
|
|
#endif
|
|
entry_limit = 7;
|
|
if ((index + entry_limit) > dt->limit)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
ptr = dt->base + index;
|
|
e1 = ldl_kernel(ptr);
|
|
e2 = ldl_kernel(ptr + 4);
|
|
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
|
if ((e2 & DESC_S_MASK) ||
|
|
(type != 1 && type != 9))
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
|
#ifdef TARGET_X86_64
|
|
if (env->hflags & HF_LMA_MASK) {
|
|
uint32_t e3;
|
|
e3 = ldl_kernel(ptr + 8);
|
|
load_seg_cache_raw_dt(&env->tr, e1, e2);
|
|
env->tr.base |= (target_ulong)e3 << 32;
|
|
} else
|
|
#endif
|
|
{
|
|
load_seg_cache_raw_dt(&env->tr, e1, e2);
|
|
}
|
|
e2 |= DESC_TSS_BUSY_MASK;
|
|
stl_kernel(ptr + 4, e2);
|
|
}
|
|
env->tr.selector = selector;
|
|
}
|
|
|
|
/* only works if protected mode and not VM86. seg_reg must be != R_CS */
|
|
void load_seg(int seg_reg, int selector)
|
|
{
|
|
uint32_t e1, e2;
|
|
int cpl, dpl, rpl;
|
|
SegmentCache *dt;
|
|
int index;
|
|
target_ulong ptr;
|
|
|
|
selector &= 0xffff;
|
|
cpl = env->hflags & HF_CPL_MASK;
|
|
if ((selector & 0xfffc) == 0) {
|
|
/* null selector case */
|
|
if (seg_reg == R_SS
|
|
#ifdef TARGET_X86_64
|
|
&& (!(env->hflags & HF_CS64_MASK) || cpl == 3)
|
|
#endif
|
|
)
|
|
raise_exception_err(EXCP0D_GPF, 0);
|
|
cpu_x86_load_seg_cache(env, seg_reg, selector, 0, 0, 0);
|
|
} else {
|
|
|
|
if (selector & 0x4)
|
|
dt = &env->ldt;
|
|
else
|
|
dt = &env->gdt;
|
|
index = selector & ~7;
|
|
if ((index + 7) > dt->limit)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
ptr = dt->base + index;
|
|
e1 = ldl_kernel(ptr);
|
|
e2 = ldl_kernel(ptr + 4);
|
|
|
|
if (!(e2 & DESC_S_MASK))
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
rpl = selector & 3;
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
if (seg_reg == R_SS) {
|
|
/* must be writable segment */
|
|
if ((e2 & DESC_CS_MASK) || !(e2 & DESC_W_MASK))
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
if (rpl != cpl || dpl != cpl)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
} else {
|
|
/* must be readable segment */
|
|
if ((e2 & (DESC_CS_MASK | DESC_R_MASK)) == DESC_CS_MASK)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
|
|
if (!(e2 & DESC_CS_MASK) || !(e2 & DESC_C_MASK)) {
|
|
/* if not conforming code, test rights */
|
|
if (dpl < cpl || dpl < rpl)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
}
|
|
}
|
|
|
|
if (!(e2 & DESC_P_MASK)) {
|
|
if (seg_reg == R_SS)
|
|
raise_exception_err(EXCP0C_STACK, selector & 0xfffc);
|
|
else
|
|
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
|
}
|
|
|
|
/* set the access bit if not already set */
|
|
if (!(e2 & DESC_A_MASK)) {
|
|
e2 |= DESC_A_MASK;
|
|
stl_kernel(ptr + 4, e2);
|
|
}
|
|
|
|
cpu_x86_load_seg_cache(env, seg_reg, selector,
|
|
get_seg_base(e1, e2),
|
|
get_seg_limit(e1, e2),
|
|
e2);
|
|
#if 0
|
|
fprintf(logfile, "load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx flags=%08x\n",
|
|
selector, (unsigned long)sc->base, sc->limit, sc->flags);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/* protected mode jump */
|
|
void helper_ljmp_protected_T0_T1(int next_eip_addend)
|
|
{
|
|
int new_cs, gate_cs, type;
|
|
uint32_t e1, e2, cpl, dpl, rpl, limit;
|
|
target_ulong new_eip, next_eip;
|
|
|
|
new_cs = T0;
|
|
new_eip = T1;
|
|
if ((new_cs & 0xfffc) == 0)
|
|
raise_exception_err(EXCP0D_GPF, 0);
|
|
if (load_segment(&e1, &e2, new_cs) != 0)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
cpl = env->hflags & HF_CPL_MASK;
|
|
if (e2 & DESC_S_MASK) {
|
|
if (!(e2 & DESC_CS_MASK))
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
if (e2 & DESC_C_MASK) {
|
|
/* conforming code segment */
|
|
if (dpl > cpl)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
} else {
|
|
/* non conforming code segment */
|
|
rpl = new_cs & 3;
|
|
if (rpl > cpl)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
if (dpl != cpl)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
}
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
|
limit = get_seg_limit(e1, e2);
|
|
if (new_eip > limit &&
|
|
!(env->hflags & HF_LMA_MASK) && !(e2 & DESC_L_MASK))
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
|
get_seg_base(e1, e2), limit, e2);
|
|
EIP = new_eip;
|
|
} else {
|
|
/* jump to call or task gate */
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
rpl = new_cs & 3;
|
|
cpl = env->hflags & HF_CPL_MASK;
|
|
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
|
switch(type) {
|
|
case 1: /* 286 TSS */
|
|
case 9: /* 386 TSS */
|
|
case 5: /* task gate */
|
|
if (dpl < cpl || dpl < rpl)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
next_eip = env->eip + next_eip_addend;
|
|
switch_tss(new_cs, e1, e2, SWITCH_TSS_JMP, next_eip);
|
|
CC_OP = CC_OP_EFLAGS;
|
|
break;
|
|
case 4: /* 286 call gate */
|
|
case 12: /* 386 call gate */
|
|
if ((dpl < cpl) || (dpl < rpl))
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
|
gate_cs = e1 >> 16;
|
|
new_eip = (e1 & 0xffff);
|
|
if (type == 12)
|
|
new_eip |= (e2 & 0xffff0000);
|
|
if (load_segment(&e1, &e2, gate_cs) != 0)
|
|
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
/* must be code segment */
|
|
if (((e2 & (DESC_S_MASK | DESC_CS_MASK)) !=
|
|
(DESC_S_MASK | DESC_CS_MASK)))
|
|
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
|
if (((e2 & DESC_C_MASK) && (dpl > cpl)) ||
|
|
(!(e2 & DESC_C_MASK) && (dpl != cpl)))
|
|
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
|
limit = get_seg_limit(e1, e2);
|
|
if (new_eip > limit)
|
|
raise_exception_err(EXCP0D_GPF, 0);
|
|
cpu_x86_load_seg_cache(env, R_CS, (gate_cs & 0xfffc) | cpl,
|
|
get_seg_base(e1, e2), limit, e2);
|
|
EIP = new_eip;
|
|
break;
|
|
default:
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* real mode call */
|
|
void helper_lcall_real_T0_T1(int shift, int next_eip)
|
|
{
|
|
int new_cs, new_eip;
|
|
uint32_t esp, esp_mask;
|
|
target_ulong ssp;
|
|
|
|
new_cs = T0;
|
|
new_eip = T1;
|
|
esp = ESP;
|
|
esp_mask = get_sp_mask(env->segs[R_SS].flags);
|
|
ssp = env->segs[R_SS].base;
|
|
if (shift) {
|
|
PUSHL(ssp, esp, esp_mask, env->segs[R_CS].selector);
|
|
PUSHL(ssp, esp, esp_mask, next_eip);
|
|
} else {
|
|
PUSHW(ssp, esp, esp_mask, env->segs[R_CS].selector);
|
|
PUSHW(ssp, esp, esp_mask, next_eip);
|
|
}
|
|
|
|
SET_ESP(esp, esp_mask);
|
|
env->eip = new_eip;
|
|
env->segs[R_CS].selector = new_cs;
|
|
env->segs[R_CS].base = (new_cs << 4);
|
|
}
|
|
|
|
/* protected mode call */
|
|
void helper_lcall_protected_T0_T1(int shift, int next_eip_addend)
|
|
{
|
|
int new_cs, new_stack, i;
|
|
uint32_t e1, e2, cpl, dpl, rpl, selector, offset, param_count;
|
|
uint32_t ss, ss_e1, ss_e2, sp, type, ss_dpl, sp_mask;
|
|
uint32_t val, limit, old_sp_mask;
|
|
target_ulong ssp, old_ssp, next_eip, new_eip;
|
|
|
|
new_cs = T0;
|
|
new_eip = T1;
|
|
next_eip = env->eip + next_eip_addend;
|
|
#ifdef DEBUG_PCALL
|
|
if (loglevel & CPU_LOG_PCALL) {
|
|
fprintf(logfile, "lcall %04x:%08x s=%d\n",
|
|
new_cs, (uint32_t)new_eip, shift);
|
|
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP);
|
|
}
|
|
#endif
|
|
if ((new_cs & 0xfffc) == 0)
|
|
raise_exception_err(EXCP0D_GPF, 0);
|
|
if (load_segment(&e1, &e2, new_cs) != 0)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
cpl = env->hflags & HF_CPL_MASK;
|
|
#ifdef DEBUG_PCALL
|
|
if (loglevel & CPU_LOG_PCALL) {
|
|
fprintf(logfile, "desc=%08x:%08x\n", e1, e2);
|
|
}
|
|
#endif
|
|
if (e2 & DESC_S_MASK) {
|
|
if (!(e2 & DESC_CS_MASK))
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
if (e2 & DESC_C_MASK) {
|
|
/* conforming code segment */
|
|
if (dpl > cpl)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
} else {
|
|
/* non conforming code segment */
|
|
rpl = new_cs & 3;
|
|
if (rpl > cpl)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
if (dpl != cpl)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
}
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
|
|
|
#ifdef TARGET_X86_64
|
|
/* XXX: check 16/32 bit cases in long mode */
|
|
if (shift == 2) {
|
|
target_ulong rsp;
|
|
/* 64 bit case */
|
|
rsp = ESP;
|
|
PUSHQ(rsp, env->segs[R_CS].selector);
|
|
PUSHQ(rsp, next_eip);
|
|
/* from this point, not restartable */
|
|
ESP = rsp;
|
|
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
|
get_seg_base(e1, e2),
|
|
get_seg_limit(e1, e2), e2);
|
|
EIP = new_eip;
|
|
} else
|
|
#endif
|
|
{
|
|
sp = ESP;
|
|
sp_mask = get_sp_mask(env->segs[R_SS].flags);
|
|
ssp = env->segs[R_SS].base;
|
|
if (shift) {
|
|
PUSHL(ssp, sp, sp_mask, env->segs[R_CS].selector);
|
|
PUSHL(ssp, sp, sp_mask, next_eip);
|
|
} else {
|
|
PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector);
|
|
PUSHW(ssp, sp, sp_mask, next_eip);
|
|
}
|
|
|
|
limit = get_seg_limit(e1, e2);
|
|
if (new_eip > limit)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
/* from this point, not restartable */
|
|
SET_ESP(sp, sp_mask);
|
|
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
|
get_seg_base(e1, e2), limit, e2);
|
|
EIP = new_eip;
|
|
}
|
|
} else {
|
|
/* check gate type */
|
|
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
rpl = new_cs & 3;
|
|
switch(type) {
|
|
case 1: /* available 286 TSS */
|
|
case 9: /* available 386 TSS */
|
|
case 5: /* task gate */
|
|
if (dpl < cpl || dpl < rpl)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
switch_tss(new_cs, e1, e2, SWITCH_TSS_CALL, next_eip);
|
|
CC_OP = CC_OP_EFLAGS;
|
|
return;
|
|
case 4: /* 286 call gate */
|
|
case 12: /* 386 call gate */
|
|
break;
|
|
default:
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
break;
|
|
}
|
|
shift = type >> 3;
|
|
|
|
if (dpl < cpl || dpl < rpl)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
/* check valid bit */
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
|
selector = e1 >> 16;
|
|
offset = (e2 & 0xffff0000) | (e1 & 0x0000ffff);
|
|
param_count = e2 & 0x1f;
|
|
if ((selector & 0xfffc) == 0)
|
|
raise_exception_err(EXCP0D_GPF, 0);
|
|
|
|
if (load_segment(&e1, &e2, selector) != 0)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
if (dpl > cpl)
|
|
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
|
|
|
if (!(e2 & DESC_C_MASK) && dpl < cpl) {
|
|
/* to inner priviledge */
|
|
get_ss_esp_from_tss(&ss, &sp, dpl);
|
|
#ifdef DEBUG_PCALL
|
|
if (loglevel & CPU_LOG_PCALL)
|
|
fprintf(logfile, "new ss:esp=%04x:%08x param_count=%d ESP=" TARGET_FMT_lx "\n",
|
|
ss, sp, param_count, ESP);
|
|
#endif
|
|
if ((ss & 0xfffc) == 0)
|
|
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
|
if ((ss & 3) != dpl)
|
|
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
|
if (load_segment(&ss_e1, &ss_e2, ss) != 0)
|
|
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
|
ss_dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
|
if (ss_dpl != dpl)
|
|
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
|
if (!(ss_e2 & DESC_S_MASK) ||
|
|
(ss_e2 & DESC_CS_MASK) ||
|
|
!(ss_e2 & DESC_W_MASK))
|
|
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
|
if (!(ss_e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
|
|
|
// push_size = ((param_count * 2) + 8) << shift;
|
|
|
|
old_sp_mask = get_sp_mask(env->segs[R_SS].flags);
|
|
old_ssp = env->segs[R_SS].base;
|
|
|
|
sp_mask = get_sp_mask(ss_e2);
|
|
ssp = get_seg_base(ss_e1, ss_e2);
|
|
if (shift) {
|
|
PUSHL(ssp, sp, sp_mask, env->segs[R_SS].selector);
|
|
PUSHL(ssp, sp, sp_mask, ESP);
|
|
for(i = param_count - 1; i >= 0; i--) {
|
|
val = ldl_kernel(old_ssp + ((ESP + i * 4) & old_sp_mask));
|
|
PUSHL(ssp, sp, sp_mask, val);
|
|
}
|
|
} else {
|
|
PUSHW(ssp, sp, sp_mask, env->segs[R_SS].selector);
|
|
PUSHW(ssp, sp, sp_mask, ESP);
|
|
for(i = param_count - 1; i >= 0; i--) {
|
|
val = lduw_kernel(old_ssp + ((ESP + i * 2) & old_sp_mask));
|
|
PUSHW(ssp, sp, sp_mask, val);
|
|
}
|
|
}
|
|
new_stack = 1;
|
|
} else {
|
|
/* to same priviledge */
|
|
sp = ESP;
|
|
sp_mask = get_sp_mask(env->segs[R_SS].flags);
|
|
ssp = env->segs[R_SS].base;
|
|
// push_size = (4 << shift);
|
|
new_stack = 0;
|
|
}
|
|
|
|
if (shift) {
|
|
PUSHL(ssp, sp, sp_mask, env->segs[R_CS].selector);
|
|
PUSHL(ssp, sp, sp_mask, next_eip);
|
|
} else {
|
|
PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector);
|
|
PUSHW(ssp, sp, sp_mask, next_eip);
|
|
}
|
|
|
|
/* from this point, not restartable */
|
|
|
|
if (new_stack) {
|
|
ss = (ss & ~3) | dpl;
|
|
cpu_x86_load_seg_cache(env, R_SS, ss,
|
|
ssp,
|
|
get_seg_limit(ss_e1, ss_e2),
|
|
ss_e2);
|
|
}
|
|
|
|
selector = (selector & ~3) | dpl;
|
|
cpu_x86_load_seg_cache(env, R_CS, selector,
|
|
get_seg_base(e1, e2),
|
|
get_seg_limit(e1, e2),
|
|
e2);
|
|
cpu_x86_set_cpl(env, dpl);
|
|
SET_ESP(sp, sp_mask);
|
|
EIP = offset;
|
|
}
|
|
#ifdef USE_KQEMU
|
|
if (kqemu_is_ok(env)) {
|
|
env->exception_index = -1;
|
|
cpu_loop_exit();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* real and vm86 mode iret */
|
|
void helper_iret_real(int shift)
|
|
{
|
|
uint32_t sp, new_cs, new_eip, new_eflags, sp_mask;
|
|
target_ulong ssp;
|
|
int eflags_mask;
|
|
|
|
sp_mask = 0xffff; /* XXXX: use SS segment size ? */
|
|
sp = ESP;
|
|
ssp = env->segs[R_SS].base;
|
|
if (shift == 1) {
|
|
/* 32 bits */
|
|
POPL(ssp, sp, sp_mask, new_eip);
|
|
POPL(ssp, sp, sp_mask, new_cs);
|
|
new_cs &= 0xffff;
|
|
POPL(ssp, sp, sp_mask, new_eflags);
|
|
} else {
|
|
/* 16 bits */
|
|
POPW(ssp, sp, sp_mask, new_eip);
|
|
POPW(ssp, sp, sp_mask, new_cs);
|
|
POPW(ssp, sp, sp_mask, new_eflags);
|
|
}
|
|
ESP = (ESP & ~sp_mask) | (sp & sp_mask);
|
|
load_seg_vm(R_CS, new_cs);
|
|
env->eip = new_eip;
|
|
if (env->eflags & VM_MASK)
|
|
eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | RF_MASK | NT_MASK;
|
|
else
|
|
eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | IOPL_MASK | RF_MASK | NT_MASK;
|
|
if (shift == 0)
|
|
eflags_mask &= 0xffff;
|
|
load_eflags(new_eflags, eflags_mask);
|
|
}
|
|
|
|
static inline void validate_seg(int seg_reg, int cpl)
|
|
{
|
|
int dpl;
|
|
uint32_t e2;
|
|
|
|
/* XXX: on x86_64, we do not want to nullify FS and GS because
|
|
they may still contain a valid base. I would be interested to
|
|
know how a real x86_64 CPU behaves */
|
|
if ((seg_reg == R_FS || seg_reg == R_GS) &&
|
|
(env->segs[seg_reg].selector & 0xfffc) == 0)
|
|
return;
|
|
|
|
e2 = env->segs[seg_reg].flags;
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
if (!(e2 & DESC_CS_MASK) || !(e2 & DESC_C_MASK)) {
|
|
/* data or non conforming code segment */
|
|
if (dpl < cpl) {
|
|
cpu_x86_load_seg_cache(env, seg_reg, 0, 0, 0, 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* protected mode iret */
|
|
static inline void helper_ret_protected(int shift, int is_iret, int addend)
|
|
{
|
|
uint32_t new_cs, new_eflags, new_ss;
|
|
uint32_t new_es, new_ds, new_fs, new_gs;
|
|
uint32_t e1, e2, ss_e1, ss_e2;
|
|
int cpl, dpl, rpl, eflags_mask, iopl;
|
|
target_ulong ssp, sp, new_eip, new_esp, sp_mask;
|
|
|
|
#ifdef TARGET_X86_64
|
|
if (shift == 2)
|
|
sp_mask = -1;
|
|
else
|
|
#endif
|
|
sp_mask = get_sp_mask(env->segs[R_SS].flags);
|
|
sp = ESP;
|
|
ssp = env->segs[R_SS].base;
|
|
new_eflags = 0; /* avoid warning */
|
|
#ifdef TARGET_X86_64
|
|
if (shift == 2) {
|
|
POPQ(sp, new_eip);
|
|
POPQ(sp, new_cs);
|
|
new_cs &= 0xffff;
|
|
if (is_iret) {
|
|
POPQ(sp, new_eflags);
|
|
}
|
|
} else
|
|
#endif
|
|
if (shift == 1) {
|
|
/* 32 bits */
|
|
POPL(ssp, sp, sp_mask, new_eip);
|
|
POPL(ssp, sp, sp_mask, new_cs);
|
|
new_cs &= 0xffff;
|
|
if (is_iret) {
|
|
POPL(ssp, sp, sp_mask, new_eflags);
|
|
if (new_eflags & VM_MASK)
|
|
goto return_to_vm86;
|
|
}
|
|
} else {
|
|
/* 16 bits */
|
|
POPW(ssp, sp, sp_mask, new_eip);
|
|
POPW(ssp, sp, sp_mask, new_cs);
|
|
if (is_iret)
|
|
POPW(ssp, sp, sp_mask, new_eflags);
|
|
}
|
|
#ifdef DEBUG_PCALL
|
|
if (loglevel & CPU_LOG_PCALL) {
|
|
fprintf(logfile, "lret new %04x:" TARGET_FMT_lx " s=%d addend=0x%x\n",
|
|
new_cs, new_eip, shift, addend);
|
|
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP);
|
|
}
|
|
#endif
|
|
if ((new_cs & 0xfffc) == 0)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
if (load_segment(&e1, &e2, new_cs) != 0)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
if (!(e2 & DESC_S_MASK) ||
|
|
!(e2 & DESC_CS_MASK))
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
cpl = env->hflags & HF_CPL_MASK;
|
|
rpl = new_cs & 3;
|
|
if (rpl < cpl)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
if (e2 & DESC_C_MASK) {
|
|
if (dpl > rpl)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
} else {
|
|
if (dpl != rpl)
|
|
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
|
}
|
|
if (!(e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
|
|
|
sp += addend;
|
|
if (rpl == cpl && (!(env->hflags & HF_CS64_MASK) ||
|
|
((env->hflags & HF_CS64_MASK) && !is_iret))) {
|
|
/* return to same priledge level */
|
|
cpu_x86_load_seg_cache(env, R_CS, new_cs,
|
|
get_seg_base(e1, e2),
|
|
get_seg_limit(e1, e2),
|
|
e2);
|
|
} else {
|
|
/* return to different priviledge level */
|
|
#ifdef TARGET_X86_64
|
|
if (shift == 2) {
|
|
POPQ(sp, new_esp);
|
|
POPQ(sp, new_ss);
|
|
new_ss &= 0xffff;
|
|
} else
|
|
#endif
|
|
if (shift == 1) {
|
|
/* 32 bits */
|
|
POPL(ssp, sp, sp_mask, new_esp);
|
|
POPL(ssp, sp, sp_mask, new_ss);
|
|
new_ss &= 0xffff;
|
|
} else {
|
|
/* 16 bits */
|
|
POPW(ssp, sp, sp_mask, new_esp);
|
|
POPW(ssp, sp, sp_mask, new_ss);
|
|
}
|
|
#ifdef DEBUG_PCALL
|
|
if (loglevel & CPU_LOG_PCALL) {
|
|
fprintf(logfile, "new ss:esp=%04x:" TARGET_FMT_lx "\n",
|
|
new_ss, new_esp);
|
|
}
|
|
#endif
|
|
if ((new_ss & 0xfffc) == 0) {
|
|
#ifdef TARGET_X86_64
|
|
/* NULL ss is allowed in long mode if cpl != 3*/
|
|
/* XXX: test CS64 ? */
|
|
if ((env->hflags & HF_LMA_MASK) && rpl != 3) {
|
|
cpu_x86_load_seg_cache(env, R_SS, new_ss,
|
|
0, 0xffffffff,
|
|
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
|
|
DESC_S_MASK | (rpl << DESC_DPL_SHIFT) |
|
|
DESC_W_MASK | DESC_A_MASK);
|
|
ss_e2 = DESC_B_MASK; /* XXX: should not be needed ? */
|
|
} else
|
|
#endif
|
|
{
|
|
raise_exception_err(EXCP0D_GPF, 0);
|
|
}
|
|
} else {
|
|
if ((new_ss & 3) != rpl)
|
|
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
|
if (load_segment(&ss_e1, &ss_e2, new_ss) != 0)
|
|
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
|
if (!(ss_e2 & DESC_S_MASK) ||
|
|
(ss_e2 & DESC_CS_MASK) ||
|
|
!(ss_e2 & DESC_W_MASK))
|
|
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
|
dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
|
if (dpl != rpl)
|
|
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
|
if (!(ss_e2 & DESC_P_MASK))
|
|
raise_exception_err(EXCP0B_NOSEG, new_ss & 0xfffc);
|
|
cpu_x86_load_seg_cache(env, R_SS, new_ss,
|
|
get_seg_base(ss_e1, ss_e2),
|
|
get_seg_limit(ss_e1, ss_e2),
|
|
ss_e2);
|
|
}
|
|
|
|
cpu_x86_load_seg_cache(env, R_CS, new_cs,
|
|
get_seg_base(e1, e2),
|
|
get_seg_limit(e1, e2),
|
|
e2);
|
|
cpu_x86_set_cpl(env, rpl);
|
|
sp = new_esp;
|
|
#ifdef TARGET_X86_64
|
|
if (env->hflags & HF_CS64_MASK)
|
|
sp_mask = -1;
|
|
else
|
|
#endif
|
|
sp_mask = get_sp_mask(ss_e2);
|
|
|
|
/* validate data segments */
|
|
validate_seg(R_ES, rpl);
|
|
validate_seg(R_DS, rpl);
|
|
validate_seg(R_FS, rpl);
|
|
validate_seg(R_GS, rpl);
|
|
|
|
sp += addend;
|
|
}
|
|
SET_ESP(sp, sp_mask);
|
|
env->eip = new_eip;
|
|
if (is_iret) {
|
|
/* NOTE: 'cpl' is the _old_ CPL */
|
|
eflags_mask = TF_MASK | AC_MASK | ID_MASK | RF_MASK | NT_MASK;
|
|
if (cpl == 0)
|
|
eflags_mask |= IOPL_MASK;
|
|
iopl = (env->eflags >> IOPL_SHIFT) & 3;
|
|
if (cpl <= iopl)
|
|
eflags_mask |= IF_MASK;
|
|
if (shift == 0)
|
|
eflags_mask &= 0xffff;
|
|
load_eflags(new_eflags, eflags_mask);
|
|
}
|
|
return;
|
|
|
|
return_to_vm86:
|
|
POPL(ssp, sp, sp_mask, new_esp);
|
|
POPL(ssp, sp, sp_mask, new_ss);
|
|
POPL(ssp, sp, sp_mask, new_es);
|
|
POPL(ssp, sp, sp_mask, new_ds);
|
|
POPL(ssp, sp, sp_mask, new_fs);
|
|
POPL(ssp, sp, sp_mask, new_gs);
|
|
|
|
/* modify processor state */
|
|
load_eflags(new_eflags, TF_MASK | AC_MASK | ID_MASK |
|
|
IF_MASK | IOPL_MASK | VM_MASK | NT_MASK | VIF_MASK | VIP_MASK);
|
|
load_seg_vm(R_CS, new_cs & 0xffff);
|
|
cpu_x86_set_cpl(env, 3);
|
|
load_seg_vm(R_SS, new_ss & 0xffff);
|
|
load_seg_vm(R_ES, new_es & 0xffff);
|
|
load_seg_vm(R_DS, new_ds & 0xffff);
|
|
load_seg_vm(R_FS, new_fs & 0xffff);
|
|
load_seg_vm(R_GS, new_gs & 0xffff);
|
|
|
|
env->eip = new_eip & 0xffff;
|
|
ESP = new_esp;
|
|
}
|
|
|
|
void helper_iret_protected(int shift, int next_eip)
|
|
{
|
|
int tss_selector, type;
|
|
uint32_t e1, e2;
|
|
|
|
/* specific case for TSS */
|
|
if (env->eflags & NT_MASK) {
|
|
#ifdef TARGET_X86_64
|
|
if (env->hflags & HF_LMA_MASK)
|
|
raise_exception_err(EXCP0D_GPF, 0);
|
|
#endif
|
|
tss_selector = lduw_kernel(env->tr.base + 0);
|
|
if (tss_selector & 4)
|
|
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
|
if (load_segment(&e1, &e2, tss_selector) != 0)
|
|
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
|
type = (e2 >> DESC_TYPE_SHIFT) & 0x17;
|
|
/* NOTE: we check both segment and busy TSS */
|
|
if (type != 3)
|
|
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
|
switch_tss(tss_selector, e1, e2, SWITCH_TSS_IRET, next_eip);
|
|
} else {
|
|
helper_ret_protected(shift, 1, 0);
|
|
}
|
|
#ifdef USE_KQEMU
|
|
if (kqemu_is_ok(env)) {
|
|
CC_OP = CC_OP_EFLAGS;
|
|
env->exception_index = -1;
|
|
cpu_loop_exit();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void helper_lret_protected(int shift, int addend)
|
|
{
|
|
helper_ret_protected(shift, 0, addend);
|
|
#ifdef USE_KQEMU
|
|
if (kqemu_is_ok(env)) {
|
|
env->exception_index = -1;
|
|
cpu_loop_exit();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void helper_sysenter(void)
|
|
{
|
|
if (env->sysenter_cs == 0) {
|
|
raise_exception_err(EXCP0D_GPF, 0);
|
|
}
|
|
env->eflags &= ~(VM_MASK | IF_MASK | RF_MASK);
|
|
cpu_x86_set_cpl(env, 0);
|
|
cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 0xfffc,
|
|
0, 0xffffffff,
|
|
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
|
|
DESC_S_MASK |
|
|
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
|
|
cpu_x86_load_seg_cache(env, R_SS, (env->sysenter_cs + 8) & 0xfffc,
|
|
0, 0xffffffff,
|
|
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
|
|
DESC_S_MASK |
|
|
DESC_W_MASK | DESC_A_MASK);
|
|
ESP = env->sysenter_esp;
|
|
EIP = env->sysenter_eip;
|
|
}
|
|
|
|
void helper_sysexit(void)
|
|
{
|
|
int cpl;
|
|
|
|
cpl = env->hflags & HF_CPL_MASK;
|
|
if (env->sysenter_cs == 0 || cpl != 0) {
|
|
raise_exception_err(EXCP0D_GPF, 0);
|
|
}
|
|
cpu_x86_set_cpl(env, 3);
|
|
cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 16) & 0xfffc) | 3,
|
|
0, 0xffffffff,
|
|
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
|
|
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
|
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
|
|
cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 24) & 0xfffc) | 3,
|
|
0, 0xffffffff,
|
|
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
|
|
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
|
DESC_W_MASK | DESC_A_MASK);
|
|
ESP = ECX;
|
|
EIP = EDX;
|
|
#ifdef USE_KQEMU
|
|
if (kqemu_is_ok(env)) {
|
|
env->exception_index = -1;
|
|
cpu_loop_exit();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void helper_movl_crN_T0(int reg)
|
|
{
|
|
#if !defined(CONFIG_USER_ONLY)
|
|
switch(reg) {
|
|
case 0:
|
|
cpu_x86_update_cr0(env, T0);
|
|
break;
|
|
case 3:
|
|
cpu_x86_update_cr3(env, T0);
|
|
break;
|
|
case 4:
|
|
cpu_x86_update_cr4(env, T0);
|
|
break;
|
|
case 8:
|
|
cpu_set_apic_tpr(env, T0);
|
|
break;
|
|
default:
|
|
env->cr[reg] = T0;
|
|
break;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* XXX: do more */
|
|
void helper_movl_drN_T0(int reg)
|
|
{
|
|
env->dr[reg] = T0;
|
|
}
|
|
|
|
void helper_invlpg(target_ulong addr)
|
|
{
|
|
cpu_x86_flush_tlb(env, addr);
|
|
}
|
|
|
|
void helper_rdtsc(void)
|
|
{
|
|
uint64_t val;
|
|
|
|
if ((env->cr[4] & CR4_TSD_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) {
|
|
raise_exception(EXCP0D_GPF);
|
|
}
|
|
val = cpu_get_tsc(env);
|
|
EAX = (uint32_t)(val);
|
|
EDX = (uint32_t)(val >> 32);
|
|
}
|
|
|
|
#if defined(CONFIG_USER_ONLY)
|
|
void helper_wrmsr(void)
|
|
{
|
|
}
|
|
|
|
void helper_rdmsr(void)
|
|
{
|
|
}
|
|
#else
|
|
void helper_wrmsr(void)
|
|
{
|
|
uint64_t val;
|
|
|
|
val = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
|
|
|
switch((uint32_t)ECX) {
|
|
case MSR_IA32_SYSENTER_CS:
|
|
env->sysenter_cs = val & 0xffff;
|
|
break;
|
|
case MSR_IA32_SYSENTER_ESP:
|
|
env->sysenter_esp = val;
|
|
break;
|
|
case MSR_IA32_SYSENTER_EIP:
|
|
env->sysenter_eip = val;
|
|
break;
|
|
case MSR_IA32_APICBASE:
|
|
cpu_set_apic_base(env, val);
|
|
break;
|
|
case MSR_EFER:
|
|
{
|
|
uint64_t update_mask;
|
|
update_mask = 0;
|
|
if (env->cpuid_ext2_features & CPUID_EXT2_SYSCALL)
|
|
update_mask |= MSR_EFER_SCE;
|
|
if (env->cpuid_ext2_features & CPUID_EXT2_LM)
|
|
update_mask |= MSR_EFER_LME;
|
|
if (env->cpuid_ext2_features & CPUID_EXT2_FFXSR)
|
|
update_mask |= MSR_EFER_FFXSR;
|
|
if (env->cpuid_ext2_features & CPUID_EXT2_NX)
|
|
update_mask |= MSR_EFER_NXE;
|
|
env->efer = (env->efer & ~update_mask) |
|
|
(val & update_mask);
|
|
}
|
|
break;
|
|
case MSR_STAR:
|
|
env->star = val;
|
|
break;
|
|
case MSR_PAT:
|
|
env->pat = val;
|
|
break;
|
|
#ifdef TARGET_X86_64
|
|
case MSR_LSTAR:
|
|
env->lstar = val;
|
|
break;
|
|
case MSR_CSTAR:
|
|
env->cstar = val;
|
|
break;
|
|
case MSR_FMASK:
|
|
env->fmask = val;
|
|
break;
|
|
case MSR_FSBASE:
|
|
env->segs[R_FS].base = val;
|
|
break;
|
|
case MSR_GSBASE:
|
|
env->segs[R_GS].base = val;
|
|
break;
|
|
case MSR_KERNELGSBASE:
|
|
env->kernelgsbase = val;
|
|
break;
|
|
#endif
|
|
default:
|
|
/* XXX: exception ? */
|
|
break;
|
|
}
|
|
}
|
|
|
|
void helper_rdmsr(void)
|
|
{
|
|
uint64_t val;
|
|
switch((uint32_t)ECX) {
|
|
case MSR_IA32_SYSENTER_CS:
|
|
val = env->sysenter_cs;
|
|
break;
|
|
case MSR_IA32_SYSENTER_ESP:
|
|
val = env->sysenter_esp;
|
|
break;
|
|
case MSR_IA32_SYSENTER_EIP:
|
|
val = env->sysenter_eip;
|
|
break;
|
|
case MSR_IA32_APICBASE:
|
|
val = cpu_get_apic_base(env);
|
|
break;
|
|
case MSR_EFER:
|
|
val = env->efer;
|
|
break;
|
|
case MSR_STAR:
|
|
val = env->star;
|
|
break;
|
|
case MSR_PAT:
|
|
val = env->pat;
|
|
break;
|
|
#ifdef TARGET_X86_64
|
|
case MSR_LSTAR:
|
|
val = env->lstar;
|
|
break;
|
|
case MSR_CSTAR:
|
|
val = env->cstar;
|
|
break;
|
|
case MSR_FMASK:
|
|
val = env->fmask;
|
|
break;
|
|
case MSR_FSBASE:
|
|
val = env->segs[R_FS].base;
|
|
break;
|
|
case MSR_GSBASE:
|
|
val = env->segs[R_GS].base;
|
|
break;
|
|
case MSR_KERNELGSBASE:
|
|
val = env->kernelgsbase;
|
|
break;
|
|
#endif
|
|
default:
|
|
/* XXX: exception ? */
|
|
val = 0;
|
|
break;
|
|
}
|
|
EAX = (uint32_t)(val);
|
|
EDX = (uint32_t)(val >> 32);
|
|
}
|
|
#endif
|
|
|
|
void helper_lsl(void)
|
|
{
|
|
unsigned int selector, limit;
|
|
uint32_t e1, e2, eflags;
|
|
int rpl, dpl, cpl, type;
|
|
|
|
eflags = cc_table[CC_OP].compute_all();
|
|
selector = T0 & 0xffff;
|
|
if (load_segment(&e1, &e2, selector) != 0)
|
|
goto fail;
|
|
rpl = selector & 3;
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
cpl = env->hflags & HF_CPL_MASK;
|
|
if (e2 & DESC_S_MASK) {
|
|
if ((e2 & DESC_CS_MASK) && (e2 & DESC_C_MASK)) {
|
|
/* conforming */
|
|
} else {
|
|
if (dpl < cpl || dpl < rpl)
|
|
goto fail;
|
|
}
|
|
} else {
|
|
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
|
switch(type) {
|
|
case 1:
|
|
case 2:
|
|
case 3:
|
|
case 9:
|
|
case 11:
|
|
break;
|
|
default:
|
|
goto fail;
|
|
}
|
|
if (dpl < cpl || dpl < rpl) {
|
|
fail:
|
|
CC_SRC = eflags & ~CC_Z;
|
|
return;
|
|
}
|
|
}
|
|
limit = get_seg_limit(e1, e2);
|
|
T1 = limit;
|
|
CC_SRC = eflags | CC_Z;
|
|
}
|
|
|
|
void helper_lar(void)
|
|
{
|
|
unsigned int selector;
|
|
uint32_t e1, e2, eflags;
|
|
int rpl, dpl, cpl, type;
|
|
|
|
eflags = cc_table[CC_OP].compute_all();
|
|
selector = T0 & 0xffff;
|
|
if ((selector & 0xfffc) == 0)
|
|
goto fail;
|
|
if (load_segment(&e1, &e2, selector) != 0)
|
|
goto fail;
|
|
rpl = selector & 3;
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
cpl = env->hflags & HF_CPL_MASK;
|
|
if (e2 & DESC_S_MASK) {
|
|
if ((e2 & DESC_CS_MASK) && (e2 & DESC_C_MASK)) {
|
|
/* conforming */
|
|
} else {
|
|
if (dpl < cpl || dpl < rpl)
|
|
goto fail;
|
|
}
|
|
} else {
|
|
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
|
switch(type) {
|
|
case 1:
|
|
case 2:
|
|
case 3:
|
|
case 4:
|
|
case 5:
|
|
case 9:
|
|
case 11:
|
|
case 12:
|
|
break;
|
|
default:
|
|
goto fail;
|
|
}
|
|
if (dpl < cpl || dpl < rpl) {
|
|
fail:
|
|
CC_SRC = eflags & ~CC_Z;
|
|
return;
|
|
}
|
|
}
|
|
T1 = e2 & 0x00f0ff00;
|
|
CC_SRC = eflags | CC_Z;
|
|
}
|
|
|
|
void helper_verr(void)
|
|
{
|
|
unsigned int selector;
|
|
uint32_t e1, e2, eflags;
|
|
int rpl, dpl, cpl;
|
|
|
|
eflags = cc_table[CC_OP].compute_all();
|
|
selector = T0 & 0xffff;
|
|
if ((selector & 0xfffc) == 0)
|
|
goto fail;
|
|
if (load_segment(&e1, &e2, selector) != 0)
|
|
goto fail;
|
|
if (!(e2 & DESC_S_MASK))
|
|
goto fail;
|
|
rpl = selector & 3;
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
cpl = env->hflags & HF_CPL_MASK;
|
|
if (e2 & DESC_CS_MASK) {
|
|
if (!(e2 & DESC_R_MASK))
|
|
goto fail;
|
|
if (!(e2 & DESC_C_MASK)) {
|
|
if (dpl < cpl || dpl < rpl)
|
|
goto fail;
|
|
}
|
|
} else {
|
|
if (dpl < cpl || dpl < rpl) {
|
|
fail:
|
|
CC_SRC = eflags & ~CC_Z;
|
|
return;
|
|
}
|
|
}
|
|
CC_SRC = eflags | CC_Z;
|
|
}
|
|
|
|
void helper_verw(void)
|
|
{
|
|
unsigned int selector;
|
|
uint32_t e1, e2, eflags;
|
|
int rpl, dpl, cpl;
|
|
|
|
eflags = cc_table[CC_OP].compute_all();
|
|
selector = T0 & 0xffff;
|
|
if ((selector & 0xfffc) == 0)
|
|
goto fail;
|
|
if (load_segment(&e1, &e2, selector) != 0)
|
|
goto fail;
|
|
if (!(e2 & DESC_S_MASK))
|
|
goto fail;
|
|
rpl = selector & 3;
|
|
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
|
cpl = env->hflags & HF_CPL_MASK;
|
|
if (e2 & DESC_CS_MASK) {
|
|
goto fail;
|
|
} else {
|
|
if (dpl < cpl || dpl < rpl)
|
|
goto fail;
|
|
if (!(e2 & DESC_W_MASK)) {
|
|
fail:
|
|
CC_SRC = eflags & ~CC_Z;
|
|
return;
|
|
}
|
|
}
|
|
CC_SRC = eflags | CC_Z;
|
|
}
|
|
|
|
/* FPU helpers */
|
|
|
|
void helper_fldt_ST0_A0(void)
|
|
{
|
|
int new_fpstt;
|
|
new_fpstt = (env->fpstt - 1) & 7;
|
|
env->fpregs[new_fpstt].d = helper_fldt(A0);
|
|
env->fpstt = new_fpstt;
|
|
env->fptags[new_fpstt] = 0; /* validate stack entry */
|
|
}
|
|
|
|
void helper_fstt_ST0_A0(void)
|
|
{
|
|
helper_fstt(ST0, A0);
|
|
}
|
|
|
|
void fpu_set_exception(int mask)
|
|
{
|
|
env->fpus |= mask;
|
|
if (env->fpus & (~env->fpuc & FPUC_EM))
|
|
env->fpus |= FPUS_SE | FPUS_B;
|
|
}
|
|
|
|
CPU86_LDouble helper_fdiv(CPU86_LDouble a, CPU86_LDouble b)
|
|
{
|
|
if (b == 0.0)
|
|
fpu_set_exception(FPUS_ZE);
|
|
return a / b;
|
|
}
|
|
|
|
void fpu_raise_exception(void)
|
|
{
|
|
if (env->cr[0] & CR0_NE_MASK) {
|
|
raise_exception(EXCP10_COPR);
|
|
}
|
|
#if !defined(CONFIG_USER_ONLY)
|
|
else {
|
|
cpu_set_ferr(env);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* BCD ops */
|
|
|
|
void helper_fbld_ST0_A0(void)
|
|
{
|
|
CPU86_LDouble tmp;
|
|
uint64_t val;
|
|
unsigned int v;
|
|
int i;
|
|
|
|
val = 0;
|
|
for(i = 8; i >= 0; i--) {
|
|
v = ldub(A0 + i);
|
|
val = (val * 100) + ((v >> 4) * 10) + (v & 0xf);
|
|
}
|
|
tmp = val;
|
|
if (ldub(A0 + 9) & 0x80)
|
|
tmp = -tmp;
|
|
fpush();
|
|
ST0 = tmp;
|
|
}
|
|
|
|
void helper_fbst_ST0_A0(void)
|
|
{
|
|
int v;
|
|
target_ulong mem_ref, mem_end;
|
|
int64_t val;
|
|
|
|
val = floatx_to_int64(ST0, &env->fp_status);
|
|
mem_ref = A0;
|
|
mem_end = mem_ref + 9;
|
|
if (val < 0) {
|
|
stb(mem_end, 0x80);
|
|
val = -val;
|
|
} else {
|
|
stb(mem_end, 0x00);
|
|
}
|
|
while (mem_ref < mem_end) {
|
|
if (val == 0)
|
|
break;
|
|
v = val % 100;
|
|
val = val / 100;
|
|
v = ((v / 10) << 4) | (v % 10);
|
|
stb(mem_ref++, v);
|
|
}
|
|
while (mem_ref < mem_end) {
|
|
stb(mem_ref++, 0);
|
|
}
|
|
}
|
|
|
|
void helper_f2xm1(void)
|
|
{
|
|
ST0 = pow(2.0,ST0) - 1.0;
|
|
}
|
|
|
|
void helper_fyl2x(void)
|
|
{
|
|
CPU86_LDouble fptemp;
|
|
|
|
fptemp = ST0;
|
|
if (fptemp>0.0){
|
|
fptemp = log(fptemp)/log(2.0); /* log2(ST) */
|
|
ST1 *= fptemp;
|
|
fpop();
|
|
} else {
|
|
env->fpus &= (~0x4700);
|
|
env->fpus |= 0x400;
|
|
}
|
|
}
|
|
|
|
void helper_fptan(void)
|
|
{
|
|
CPU86_LDouble fptemp;
|
|
|
|
fptemp = ST0;
|
|
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
|
env->fpus |= 0x400;
|
|
} else {
|
|
ST0 = tan(fptemp);
|
|
fpush();
|
|
ST0 = 1.0;
|
|
env->fpus &= (~0x400); /* C2 <-- 0 */
|
|
/* the above code is for |arg| < 2**52 only */
|
|
}
|
|
}
|
|
|
|
void helper_fpatan(void)
|
|
{
|
|
CPU86_LDouble fptemp, fpsrcop;
|
|
|
|
fpsrcop = ST1;
|
|
fptemp = ST0;
|
|
ST1 = atan2(fpsrcop,fptemp);
|
|
fpop();
|
|
}
|
|
|
|
void helper_fxtract(void)
|
|
{
|
|
CPU86_LDoubleU temp;
|
|
unsigned int expdif;
|
|
|
|
temp.d = ST0;
|
|
expdif = EXPD(temp) - EXPBIAS;
|
|
/*DP exponent bias*/
|
|
ST0 = expdif;
|
|
fpush();
|
|
BIASEXPONENT(temp);
|
|
ST0 = temp.d;
|
|
}
|
|
|
|
void helper_fprem1(void)
|
|
{
|
|
CPU86_LDouble dblq, fpsrcop, fptemp;
|
|
CPU86_LDoubleU fpsrcop1, fptemp1;
|
|
int expdif;
|
|
int q;
|
|
|
|
fpsrcop = ST0;
|
|
fptemp = ST1;
|
|
fpsrcop1.d = fpsrcop;
|
|
fptemp1.d = fptemp;
|
|
expdif = EXPD(fpsrcop1) - EXPD(fptemp1);
|
|
if (expdif < 53) {
|
|
dblq = fpsrcop / fptemp;
|
|
dblq = (dblq < 0.0)? ceil(dblq): floor(dblq);
|
|
ST0 = fpsrcop - fptemp*dblq;
|
|
q = (int)dblq; /* cutting off top bits is assumed here */
|
|
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
|
|
/* (C0,C1,C3) <-- (q2,q1,q0) */
|
|
env->fpus |= (q&0x4) << 6; /* (C0) <-- q2 */
|
|
env->fpus |= (q&0x2) << 8; /* (C1) <-- q1 */
|
|
env->fpus |= (q&0x1) << 14; /* (C3) <-- q0 */
|
|
} else {
|
|
env->fpus |= 0x400; /* C2 <-- 1 */
|
|
fptemp = pow(2.0, expdif-50);
|
|
fpsrcop = (ST0 / ST1) / fptemp;
|
|
/* fpsrcop = integer obtained by rounding to the nearest */
|
|
fpsrcop = (fpsrcop-floor(fpsrcop) < ceil(fpsrcop)-fpsrcop)?
|
|
floor(fpsrcop): ceil(fpsrcop);
|
|
ST0 -= (ST1 * fpsrcop * fptemp);
|
|
}
|
|
}
|
|
|
|
void helper_fprem(void)
|
|
{
|
|
CPU86_LDouble dblq, fpsrcop, fptemp;
|
|
CPU86_LDoubleU fpsrcop1, fptemp1;
|
|
int expdif;
|
|
int q;
|
|
|
|
fpsrcop = ST0;
|
|
fptemp = ST1;
|
|
fpsrcop1.d = fpsrcop;
|
|
fptemp1.d = fptemp;
|
|
expdif = EXPD(fpsrcop1) - EXPD(fptemp1);
|
|
if ( expdif < 53 ) {
|
|
dblq = fpsrcop / fptemp;
|
|
dblq = (dblq < 0.0)? ceil(dblq): floor(dblq);
|
|
ST0 = fpsrcop - fptemp*dblq;
|
|
q = (int)dblq; /* cutting off top bits is assumed here */
|
|
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
|
|
/* (C0,C1,C3) <-- (q2,q1,q0) */
|
|
env->fpus |= (q&0x4) << 6; /* (C0) <-- q2 */
|
|
env->fpus |= (q&0x2) << 8; /* (C1) <-- q1 */
|
|
env->fpus |= (q&0x1) << 14; /* (C3) <-- q0 */
|
|
} else {
|
|
env->fpus |= 0x400; /* C2 <-- 1 */
|
|
fptemp = pow(2.0, expdif-50);
|
|
fpsrcop = (ST0 / ST1) / fptemp;
|
|
/* fpsrcop = integer obtained by chopping */
|
|
fpsrcop = (fpsrcop < 0.0)?
|
|
-(floor(fabs(fpsrcop))): floor(fpsrcop);
|
|
ST0 -= (ST1 * fpsrcop * fptemp);
|
|
}
|
|
}
|
|
|
|
void helper_fyl2xp1(void)
|
|
{
|
|
CPU86_LDouble fptemp;
|
|
|
|
fptemp = ST0;
|
|
if ((fptemp+1.0)>0.0) {
|
|
fptemp = log(fptemp+1.0) / log(2.0); /* log2(ST+1.0) */
|
|
ST1 *= fptemp;
|
|
fpop();
|
|
} else {
|
|
env->fpus &= (~0x4700);
|
|
env->fpus |= 0x400;
|
|
}
|
|
}
|
|
|
|
void helper_fsqrt(void)
|
|
{
|
|
CPU86_LDouble fptemp;
|
|
|
|
fptemp = ST0;
|
|
if (fptemp<0.0) {
|
|
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
|
|
env->fpus |= 0x400;
|
|
}
|
|
ST0 = sqrt(fptemp);
|
|
}
|
|
|
|
void helper_fsincos(void)
|
|
{
|
|
CPU86_LDouble fptemp;
|
|
|
|
fptemp = ST0;
|
|
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
|
env->fpus |= 0x400;
|
|
} else {
|
|
ST0 = sin(fptemp);
|
|
fpush();
|
|
ST0 = cos(fptemp);
|
|
env->fpus &= (~0x400); /* C2 <-- 0 */
|
|
/* the above code is for |arg| < 2**63 only */
|
|
}
|
|
}
|
|
|
|
void helper_frndint(void)
|
|
{
|
|
ST0 = floatx_round_to_int(ST0, &env->fp_status);
|
|
}
|
|
|
|
void helper_fscale(void)
|
|
{
|
|
ST0 = ldexp (ST0, (int)(ST1));
|
|
}
|
|
|
|
void helper_fsin(void)
|
|
{
|
|
CPU86_LDouble fptemp;
|
|
|
|
fptemp = ST0;
|
|
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
|
env->fpus |= 0x400;
|
|
} else {
|
|
ST0 = sin(fptemp);
|
|
env->fpus &= (~0x400); /* C2 <-- 0 */
|
|
/* the above code is for |arg| < 2**53 only */
|
|
}
|
|
}
|
|
|
|
void helper_fcos(void)
|
|
{
|
|
CPU86_LDouble fptemp;
|
|
|
|
fptemp = ST0;
|
|
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
|
env->fpus |= 0x400;
|
|
} else {
|
|
ST0 = cos(fptemp);
|
|
env->fpus &= (~0x400); /* C2 <-- 0 */
|
|
/* the above code is for |arg5 < 2**63 only */
|
|
}
|
|
}
|
|
|
|
void helper_fxam_ST0(void)
|
|
{
|
|
CPU86_LDoubleU temp;
|
|
int expdif;
|
|
|
|
temp.d = ST0;
|
|
|
|
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
|
|
if (SIGND(temp))
|
|
env->fpus |= 0x200; /* C1 <-- 1 */
|
|
|
|
/* XXX: test fptags too */
|
|
expdif = EXPD(temp);
|
|
if (expdif == MAXEXPD) {
|
|
#ifdef USE_X86LDOUBLE
|
|
if (MANTD(temp) == 0x8000000000000000ULL)
|
|
#else
|
|
if (MANTD(temp) == 0)
|
|
#endif
|
|
env->fpus |= 0x500 /*Infinity*/;
|
|
else
|
|
env->fpus |= 0x100 /*NaN*/;
|
|
} else if (expdif == 0) {
|
|
if (MANTD(temp) == 0)
|
|
env->fpus |= 0x4000 /*Zero*/;
|
|
else
|
|
env->fpus |= 0x4400 /*Denormal*/;
|
|
} else {
|
|
env->fpus |= 0x400;
|
|
}
|
|
}
|
|
|
|
void helper_fstenv(target_ulong ptr, int data32)
|
|
{
|
|
int fpus, fptag, exp, i;
|
|
uint64_t mant;
|
|
CPU86_LDoubleU tmp;
|
|
|
|
fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
|
|
fptag = 0;
|
|
for (i=7; i>=0; i--) {
|
|
fptag <<= 2;
|
|
if (env->fptags[i]) {
|
|
fptag |= 3;
|
|
} else {
|
|
tmp.d = env->fpregs[i].d;
|
|
exp = EXPD(tmp);
|
|
mant = MANTD(tmp);
|
|
if (exp == 0 && mant == 0) {
|
|
/* zero */
|
|
fptag |= 1;
|
|
} else if (exp == 0 || exp == MAXEXPD
|
|
#ifdef USE_X86LDOUBLE
|
|
|| (mant & (1LL << 63)) == 0
|
|
#endif
|
|
) {
|
|
/* NaNs, infinity, denormal */
|
|
fptag |= 2;
|
|
}
|
|
}
|
|
}
|
|
if (data32) {
|
|
/* 32 bit */
|
|
stl(ptr, env->fpuc);
|
|
stl(ptr + 4, fpus);
|
|
stl(ptr + 8, fptag);
|
|
stl(ptr + 12, 0); /* fpip */
|
|
stl(ptr + 16, 0); /* fpcs */
|
|
stl(ptr + 20, 0); /* fpoo */
|
|
stl(ptr + 24, 0); /* fpos */
|
|
} else {
|
|
/* 16 bit */
|
|
stw(ptr, env->fpuc);
|
|
stw(ptr + 2, fpus);
|
|
stw(ptr + 4, fptag);
|
|
stw(ptr + 6, 0);
|
|
stw(ptr + 8, 0);
|
|
stw(ptr + 10, 0);
|
|
stw(ptr + 12, 0);
|
|
}
|
|
}
|
|
|
|
void helper_fldenv(target_ulong ptr, int data32)
|
|
{
|
|
int i, fpus, fptag;
|
|
|
|
if (data32) {
|
|
env->fpuc = lduw(ptr);
|
|
fpus = lduw(ptr + 4);
|
|
fptag = lduw(ptr + 8);
|
|
}
|
|
else {
|
|
env->fpuc = lduw(ptr);
|
|
fpus = lduw(ptr + 2);
|
|
fptag = lduw(ptr + 4);
|
|
}
|
|
env->fpstt = (fpus >> 11) & 7;
|
|
env->fpus = fpus & ~0x3800;
|
|
for(i = 0;i < 8; i++) {
|
|
env->fptags[i] = ((fptag & 3) == 3);
|
|
fptag >>= 2;
|
|
}
|
|
}
|
|
|
|
void helper_fsave(target_ulong ptr, int data32)
|
|
{
|
|
CPU86_LDouble tmp;
|
|
int i;
|
|
|
|
helper_fstenv(ptr, data32);
|
|
|
|
ptr += (14 << data32);
|
|
for(i = 0;i < 8; i++) {
|
|
tmp = ST(i);
|
|
helper_fstt(tmp, ptr);
|
|
ptr += 10;
|
|
}
|
|
|
|
/* fninit */
|
|
env->fpus = 0;
|
|
env->fpstt = 0;
|
|
env->fpuc = 0x37f;
|
|
env->fptags[0] = 1;
|
|
env->fptags[1] = 1;
|
|
env->fptags[2] = 1;
|
|
env->fptags[3] = 1;
|
|
env->fptags[4] = 1;
|
|
env->fptags[5] = 1;
|
|
env->fptags[6] = 1;
|
|
env->fptags[7] = 1;
|
|
}
|
|
|
|
void helper_frstor(target_ulong ptr, int data32)
|
|
{
|
|
CPU86_LDouble tmp;
|
|
int i;
|
|
|
|
helper_fldenv(ptr, data32);
|
|
ptr += (14 << data32);
|
|
|
|
for(i = 0;i < 8; i++) {
|
|
tmp = helper_fldt(ptr);
|
|
ST(i) = tmp;
|
|
ptr += 10;
|
|
}
|
|
}
|
|
|
|
void helper_fxsave(target_ulong ptr, int data64)
|
|
{
|
|
int fpus, fptag, i, nb_xmm_regs;
|
|
CPU86_LDouble tmp;
|
|
target_ulong addr;
|
|
|
|
fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
|
|
fptag = 0;
|
|
for(i = 0; i < 8; i++) {
|
|
fptag |= (env->fptags[i] << i);
|
|
}
|
|
stw(ptr, env->fpuc);
|
|
stw(ptr + 2, fpus);
|
|
stw(ptr + 4, fptag ^ 0xff);
|
|
|
|
addr = ptr + 0x20;
|
|
for(i = 0;i < 8; i++) {
|
|
tmp = ST(i);
|
|
helper_fstt(tmp, addr);
|
|
addr += 16;
|
|
}
|
|
|
|
if (env->cr[4] & CR4_OSFXSR_MASK) {
|
|
/* XXX: finish it */
|
|
stl(ptr + 0x18, env->mxcsr); /* mxcsr */
|
|
stl(ptr + 0x1c, 0x0000ffff); /* mxcsr_mask */
|
|
nb_xmm_regs = 8 << data64;
|
|
addr = ptr + 0xa0;
|
|
for(i = 0; i < nb_xmm_regs; i++) {
|
|
stq(addr, env->xmm_regs[i].XMM_Q(0));
|
|
stq(addr + 8, env->xmm_regs[i].XMM_Q(1));
|
|
addr += 16;
|
|
}
|
|
}
|
|
}
|
|
|
|
void helper_fxrstor(target_ulong ptr, int data64)
|
|
{
|
|
int i, fpus, fptag, nb_xmm_regs;
|
|
CPU86_LDouble tmp;
|
|
target_ulong addr;
|
|
|
|
env->fpuc = lduw(ptr);
|
|
fpus = lduw(ptr + 2);
|
|
fptag = lduw(ptr + 4);
|
|
env->fpstt = (fpus >> 11) & 7;
|
|
env->fpus = fpus & ~0x3800;
|
|
fptag ^= 0xff;
|
|
for(i = 0;i < 8; i++) {
|
|
env->fptags[i] = ((fptag >> i) & 1);
|
|
}
|
|
|
|
addr = ptr + 0x20;
|
|
for(i = 0;i < 8; i++) {
|
|
tmp = helper_fldt(addr);
|
|
ST(i) = tmp;
|
|
addr += 16;
|
|
}
|
|
|
|
if (env->cr[4] & CR4_OSFXSR_MASK) {
|
|
/* XXX: finish it */
|
|
env->mxcsr = ldl(ptr + 0x18);
|
|
//ldl(ptr + 0x1c);
|
|
nb_xmm_regs = 8 << data64;
|
|
addr = ptr + 0xa0;
|
|
for(i = 0; i < nb_xmm_regs; i++) {
|
|
env->xmm_regs[i].XMM_Q(0) = ldq(addr);
|
|
env->xmm_regs[i].XMM_Q(1) = ldq(addr + 8);
|
|
addr += 16;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifndef USE_X86LDOUBLE
|
|
|
|
void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f)
|
|
{
|
|
CPU86_LDoubleU temp;
|
|
int e;
|
|
|
|
temp.d = f;
|
|
/* mantissa */
|
|
*pmant = (MANTD(temp) << 11) | (1LL << 63);
|
|
/* exponent + sign */
|
|
e = EXPD(temp) - EXPBIAS + 16383;
|
|
e |= SIGND(temp) >> 16;
|
|
*pexp = e;
|
|
}
|
|
|
|
CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper)
|
|
{
|
|
CPU86_LDoubleU temp;
|
|
int e;
|
|
uint64_t ll;
|
|
|
|
/* XXX: handle overflow ? */
|
|
e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */
|
|
e |= (upper >> 4) & 0x800; /* sign */
|
|
ll = (mant >> 11) & ((1LL << 52) - 1);
|
|
#ifdef __arm__
|
|
temp.l.upper = (e << 20) | (ll >> 32);
|
|
temp.l.lower = ll;
|
|
#else
|
|
temp.ll = ll | ((uint64_t)e << 52);
|
|
#endif
|
|
return temp.d;
|
|
}
|
|
|
|
#else
|
|
|
|
void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f)
|
|
{
|
|
CPU86_LDoubleU temp;
|
|
|
|
temp.d = f;
|
|
*pmant = temp.l.lower;
|
|
*pexp = temp.l.upper;
|
|
}
|
|
|
|
CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper)
|
|
{
|
|
CPU86_LDoubleU temp;
|
|
|
|
temp.l.upper = upper;
|
|
temp.l.lower = mant;
|
|
return temp.d;
|
|
}
|
|
#endif
|
|
|
|
#ifdef TARGET_X86_64
|
|
|
|
//#define DEBUG_MULDIV
|
|
|
|
static void add128(uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b)
|
|
{
|
|
*plow += a;
|
|
/* carry test */
|
|
if (*plow < a)
|
|
(*phigh)++;
|
|
*phigh += b;
|
|
}
|
|
|
|
static void neg128(uint64_t *plow, uint64_t *phigh)
|
|
{
|
|
*plow = ~ *plow;
|
|
*phigh = ~ *phigh;
|
|
add128(plow, phigh, 1, 0);
|
|
}
|
|
|
|
static void mul64(uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b)
|
|
{
|
|
uint32_t a0, a1, b0, b1;
|
|
uint64_t v;
|
|
|
|
a0 = a;
|
|
a1 = a >> 32;
|
|
|
|
b0 = b;
|
|
b1 = b >> 32;
|
|
|
|
v = (uint64_t)a0 * (uint64_t)b0;
|
|
*plow = v;
|
|
*phigh = 0;
|
|
|
|
v = (uint64_t)a0 * (uint64_t)b1;
|
|
add128(plow, phigh, v << 32, v >> 32);
|
|
|
|
v = (uint64_t)a1 * (uint64_t)b0;
|
|
add128(plow, phigh, v << 32, v >> 32);
|
|
|
|
v = (uint64_t)a1 * (uint64_t)b1;
|
|
*phigh += v;
|
|
#ifdef DEBUG_MULDIV
|
|
printf("mul: 0x%016" PRIx64 " * 0x%016" PRIx64 " = 0x%016" PRIx64 "%016" PRIx64 "\n",
|
|
a, b, *phigh, *plow);
|
|
#endif
|
|
}
|
|
|
|
static void imul64(uint64_t *plow, uint64_t *phigh, int64_t a, int64_t b)
|
|
{
|
|
int sa, sb;
|
|
sa = (a < 0);
|
|
if (sa)
|
|
a = -a;
|
|
sb = (b < 0);
|
|
if (sb)
|
|
b = -b;
|
|
mul64(plow, phigh, a, b);
|
|
if (sa ^ sb) {
|
|
neg128(plow, phigh);
|
|
}
|
|
}
|
|
|
|
/* return TRUE if overflow */
|
|
static int div64(uint64_t *plow, uint64_t *phigh, uint64_t b)
|
|
{
|
|
uint64_t q, r, a1, a0;
|
|
int i, qb, ab;
|
|
|
|
a0 = *plow;
|
|
a1 = *phigh;
|
|
if (a1 == 0) {
|
|
q = a0 / b;
|
|
r = a0 % b;
|
|
*plow = q;
|
|
*phigh = r;
|
|
} else {
|
|
if (a1 >= b)
|
|
return 1;
|
|
/* XXX: use a better algorithm */
|
|
for(i = 0; i < 64; i++) {
|
|
ab = a1 >> 63;
|
|
a1 = (a1 << 1) | (a0 >> 63);
|
|
if (ab || a1 >= b) {
|
|
a1 -= b;
|
|
qb = 1;
|
|
} else {
|
|
qb = 0;
|
|
}
|
|
a0 = (a0 << 1) | qb;
|
|
}
|
|
#if defined(DEBUG_MULDIV)
|
|
printf("div: 0x%016" PRIx64 "%016" PRIx64 " / 0x%016" PRIx64 ": q=0x%016" PRIx64 " r=0x%016" PRIx64 "\n",
|
|
*phigh, *plow, b, a0, a1);
|
|
#endif
|
|
*plow = a0;
|
|
*phigh = a1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* return TRUE if overflow */
|
|
static int idiv64(uint64_t *plow, uint64_t *phigh, int64_t b)
|
|
{
|
|
int sa, sb;
|
|
sa = ((int64_t)*phigh < 0);
|
|
if (sa)
|
|
neg128(plow, phigh);
|
|
sb = (b < 0);
|
|
if (sb)
|
|
b = -b;
|
|
if (div64(plow, phigh, b) != 0)
|
|
return 1;
|
|
if (sa ^ sb) {
|
|
if (*plow > (1ULL << 63))
|
|
return 1;
|
|
*plow = - *plow;
|
|
} else {
|
|
if (*plow >= (1ULL << 63))
|
|
return 1;
|
|
}
|
|
if (sa)
|
|
*phigh = - *phigh;
|
|
return 0;
|
|
}
|
|
|
|
void helper_mulq_EAX_T0(void)
|
|
{
|
|
uint64_t r0, r1;
|
|
|
|
mul64(&r0, &r1, EAX, T0);
|
|
EAX = r0;
|
|
EDX = r1;
|
|
CC_DST = r0;
|
|
CC_SRC = r1;
|
|
}
|
|
|
|
void helper_imulq_EAX_T0(void)
|
|
{
|
|
uint64_t r0, r1;
|
|
|
|
imul64(&r0, &r1, EAX, T0);
|
|
EAX = r0;
|
|
EDX = r1;
|
|
CC_DST = r0;
|
|
CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
|
|
}
|
|
|
|
void helper_imulq_T0_T1(void)
|
|
{
|
|
uint64_t r0, r1;
|
|
|
|
imul64(&r0, &r1, T0, T1);
|
|
T0 = r0;
|
|
CC_DST = r0;
|
|
CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
|
|
}
|
|
|
|
void helper_divq_EAX_T0(void)
|
|
{
|
|
uint64_t r0, r1;
|
|
if (T0 == 0) {
|
|
raise_exception(EXCP00_DIVZ);
|
|
}
|
|
r0 = EAX;
|
|
r1 = EDX;
|
|
if (div64(&r0, &r1, T0))
|
|
raise_exception(EXCP00_DIVZ);
|
|
EAX = r0;
|
|
EDX = r1;
|
|
}
|
|
|
|
void helper_idivq_EAX_T0(void)
|
|
{
|
|
uint64_t r0, r1;
|
|
if (T0 == 0) {
|
|
raise_exception(EXCP00_DIVZ);
|
|
}
|
|
r0 = EAX;
|
|
r1 = EDX;
|
|
if (idiv64(&r0, &r1, T0))
|
|
raise_exception(EXCP00_DIVZ);
|
|
EAX = r0;
|
|
EDX = r1;
|
|
}
|
|
|
|
void helper_bswapq_T0(void)
|
|
{
|
|
T0 = bswap64(T0);
|
|
}
|
|
#endif
|
|
|
|
void helper_hlt(void)
|
|
{
|
|
env->hflags &= ~HF_INHIBIT_IRQ_MASK; /* needed if sti is just before */
|
|
env->hflags |= HF_HALTED_MASK;
|
|
env->exception_index = EXCP_HLT;
|
|
cpu_loop_exit();
|
|
}
|
|
|
|
void helper_monitor(void)
|
|
{
|
|
if ((uint32_t)ECX != 0)
|
|
raise_exception(EXCP0D_GPF);
|
|
/* XXX: store address ? */
|
|
}
|
|
|
|
void helper_mwait(void)
|
|
{
|
|
if ((uint32_t)ECX != 0)
|
|
raise_exception(EXCP0D_GPF);
|
|
/* XXX: not complete but not completely erroneous */
|
|
if (env->cpu_index != 0 || env->next_cpu != NULL) {
|
|
/* more than one CPU: do not sleep because another CPU may
|
|
wake this one */
|
|
} else {
|
|
helper_hlt();
|
|
}
|
|
}
|
|
|
|
float approx_rsqrt(float a)
|
|
{
|
|
return 1.0 / sqrt(a);
|
|
}
|
|
|
|
float approx_rcp(float a)
|
|
{
|
|
return 1.0 / a;
|
|
}
|
|
|
|
void update_fp_status(void)
|
|
{
|
|
int rnd_type;
|
|
|
|
/* set rounding mode */
|
|
switch(env->fpuc & RC_MASK) {
|
|
default:
|
|
case RC_NEAR:
|
|
rnd_type = float_round_nearest_even;
|
|
break;
|
|
case RC_DOWN:
|
|
rnd_type = float_round_down;
|
|
break;
|
|
case RC_UP:
|
|
rnd_type = float_round_up;
|
|
break;
|
|
case RC_CHOP:
|
|
rnd_type = float_round_to_zero;
|
|
break;
|
|
}
|
|
set_float_rounding_mode(rnd_type, &env->fp_status);
|
|
#ifdef FLOATX80
|
|
switch((env->fpuc >> 8) & 3) {
|
|
case 0:
|
|
rnd_type = 32;
|
|
break;
|
|
case 2:
|
|
rnd_type = 64;
|
|
break;
|
|
case 3:
|
|
default:
|
|
rnd_type = 80;
|
|
break;
|
|
}
|
|
set_floatx80_rounding_precision(rnd_type, &env->fp_status);
|
|
#endif
|
|
}
|
|
|
|
#if !defined(CONFIG_USER_ONLY)
|
|
|
|
#define MMUSUFFIX _mmu
|
|
#define GETPC() (__builtin_return_address(0))
|
|
|
|
#define SHIFT 0
|
|
#include "softmmu_template.h"
|
|
|
|
#define SHIFT 1
|
|
#include "softmmu_template.h"
|
|
|
|
#define SHIFT 2
|
|
#include "softmmu_template.h"
|
|
|
|
#define SHIFT 3
|
|
#include "softmmu_template.h"
|
|
|
|
#endif
|
|
|
|
/* try to fill the TLB and return an exception if error. If retaddr is
|
|
NULL, it means that the function was called in C code (i.e. not
|
|
from generated code or from helper.c) */
|
|
/* XXX: fix it to restore all registers */
|
|
void tlb_fill(target_ulong addr, int is_write, int is_user, void *retaddr)
|
|
{
|
|
TranslationBlock *tb;
|
|
int ret;
|
|
unsigned long pc;
|
|
CPUX86State *saved_env;
|
|
|
|
/* XXX: hack to restore env in all cases, even if not called from
|
|
generated code */
|
|
saved_env = env;
|
|
env = cpu_single_env;
|
|
|
|
ret = cpu_x86_handle_mmu_fault(env, addr, is_write, is_user, 1);
|
|
if (ret) {
|
|
if (retaddr) {
|
|
/* now we have a real cpu fault */
|
|
pc = (unsigned long)retaddr;
|
|
tb = tb_find_pc(pc);
|
|
if (tb) {
|
|
/* the PC is inside the translated code. It means that we have
|
|
a virtual CPU fault */
|
|
cpu_restore_state(tb, env, pc, NULL);
|
|
}
|
|
}
|
|
if (retaddr)
|
|
raise_exception_err(env->exception_index, env->error_code);
|
|
else
|
|
raise_exception_err_norestore(env->exception_index, env->error_code);
|
|
}
|
|
env = saved_env;
|
|
}
|