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-rw-r--r--helper-i386.c1803
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diff --git a/helper-i386.c b/helper-i386.c
deleted file mode 100644
index 67c3aec6c5..0000000000
--- a/helper-i386.c
+++ /dev/null
@@ -1,1803 +0,0 @@
-/*
- * i386 helpers
- *
- * Copyright (c) 2003 Fabrice Bellard
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include "exec-i386.h"
-
-const uint8_t parity_table[256] = {
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
- 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
-};
-
-/* modulo 17 table */
-const uint8_t rclw_table[32] = {
- 0, 1, 2, 3, 4, 5, 6, 7,
- 8, 9,10,11,12,13,14,15,
- 16, 0, 1, 2, 3, 4, 5, 6,
- 7, 8, 9,10,11,12,13,14,
-};
-
-/* modulo 9 table */
-const uint8_t rclb_table[32] = {
- 0, 1, 2, 3, 4, 5, 6, 7,
- 8, 0, 1, 2, 3, 4, 5, 6,
- 7, 8, 0, 1, 2, 3, 4, 5,
- 6, 7, 8, 0, 1, 2, 3, 4,
-};
-
-const CPU86_LDouble f15rk[7] =
-{
- 0.00000000000000000000L,
- 1.00000000000000000000L,
- 3.14159265358979323851L, /*pi*/
- 0.30102999566398119523L, /*lg2*/
- 0.69314718055994530943L, /*ln2*/
- 1.44269504088896340739L, /*l2e*/
- 3.32192809488736234781L, /*l2t*/
-};
-
-/* thread support */
-
-spinlock_t global_cpu_lock = SPIN_LOCK_UNLOCKED;
-
-void cpu_lock(void)
-{
- spin_lock(&global_cpu_lock);
-}
-
-void cpu_unlock(void)
-{
- spin_unlock(&global_cpu_lock);
-}
-
-void cpu_loop_exit(void)
-{
- /* NOTE: the register at this point must be saved by hand because
- longjmp restore them */
-#ifdef reg_EAX
- env->regs[R_EAX] = EAX;
-#endif
-#ifdef reg_ECX
- env->regs[R_ECX] = ECX;
-#endif
-#ifdef reg_EDX
- env->regs[R_EDX] = EDX;
-#endif
-#ifdef reg_EBX
- env->regs[R_EBX] = EBX;
-#endif
-#ifdef reg_ESP
- env->regs[R_ESP] = ESP;
-#endif
-#ifdef reg_EBP
- env->regs[R_EBP] = EBP;
-#endif
-#ifdef reg_ESI
- env->regs[R_ESI] = ESI;
-#endif
-#ifdef reg_EDI
- env->regs[R_EDI] = EDI;
-#endif
- longjmp(env->jmp_env, 1);
-}
-
-static inline void get_ss_esp_from_tss(uint32_t *ss_ptr,
- uint32_t *esp_ptr, int dpl)
-{
- int type, index, shift;
-
-#if 0
- {
- int i;
- printf("TR: base=%p limit=%x\n", env->tr.base, env->tr.limit);
- for(i=0;i<env->tr.limit;i++) {
- printf("%02x ", env->tr.base[i]);
- if ((i & 7) == 7) printf("\n");
- }
- printf("\n");
- }
-#endif
-
- if (!(env->tr.flags & DESC_P_MASK))
- cpu_abort(env, "invalid tss");
- type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
- if ((type & 7) != 1)
- cpu_abort(env, "invalid tss type");
- shift = type >> 3;
- index = (dpl * 4 + 2) << shift;
- if (index + (4 << shift) - 1 > env->tr.limit)
- raise_exception_err(EXCP0A_TSS, env->tr.selector & 0xfffc);
- if (shift == 0) {
- *esp_ptr = lduw(env->tr.base + index);
- *ss_ptr = lduw(env->tr.base + index + 2);
- } else {
- *esp_ptr = ldl(env->tr.base + index);
- *ss_ptr = lduw(env->tr.base + index + 4);
- }
-}
-
-/* return non zero if error */
-static inline int load_segment(uint32_t *e1_ptr, uint32_t *e2_ptr,
- int selector)
-{
- SegmentCache *dt;
- int index;
- uint8_t *ptr;
-
- if (selector & 0x4)
- dt = &env->ldt;
- else
- dt = &env->gdt;
- index = selector & ~7;
- if ((index + 7) > dt->limit)
- return -1;
- ptr = dt->base + index;
- *e1_ptr = ldl(ptr);
- *e2_ptr = ldl(ptr + 4);
- return 0;
-}
-
-static inline unsigned int get_seg_limit(uint32_t e1, uint32_t e2)
-{
- unsigned int limit;
- limit = (e1 & 0xffff) | (e2 & 0x000f0000);
- if (e2 & DESC_G_MASK)
- limit = (limit << 12) | 0xfff;
- return limit;
-}
-
-static inline uint8_t *get_seg_base(uint32_t e1, uint32_t e2)
-{
- return (uint8_t *)((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000));
-}
-
-static inline void load_seg_cache_raw_dt(SegmentCache *sc, uint32_t e1, uint32_t e2)
-{
- sc->base = get_seg_base(e1, e2);
- sc->limit = get_seg_limit(e1, e2);
- sc->flags = e2;
-}
-
-/* init the segment cache in vm86 mode. */
-static inline void load_seg_vm(int seg, int selector)
-{
- selector &= 0xffff;
- cpu_x86_load_seg_cache(env, seg, selector,
- (uint8_t *)(selector << 4), 0xffff, 0);
-}
-
-/* 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;
- uint8_t *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, push_size;
- uint32_t old_cs, old_ss, old_esp, old_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(ptr);
- e2 = ldl(ptr + 4);
- /* check gate type */
- type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
- switch(type) {
- case 5: /* task gate */
- cpu_abort(env, "task gate not supported");
- break;
- 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;
- } else if ((e2 & DESC_C_MASK) || dpl == cpl) {
- /* to same priviledge */
- new_stack = 0;
- } else {
- raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
- new_stack = 0; /* avoid warning */
- }
-
- shift = type >> 3;
- 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;
- }
- }
- push_size = 6 + (new_stack << 2) + (has_error_code << 1);
- if (env->eflags & VM_MASK)
- push_size += 8;
- push_size <<= shift;
-
- /* XXX: check that enough room is available */
- if (new_stack) {
- old_esp = ESP;
- old_ss = env->segs[R_SS].selector;
- ss = (ss & ~3) | dpl;
- cpu_x86_load_seg_cache(env, R_SS, ss,
- get_seg_base(ss_e1, ss_e2),
- get_seg_limit(ss_e1, ss_e2),
- ss_e2);
- } else {
- old_esp = 0;
- old_ss = 0;
- esp = ESP;
- }
- if (is_int)
- old_eip = next_eip;
- else
- old_eip = env->eip;
- old_cs = env->segs[R_CS].selector;
- 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;
- ESP = esp - push_size;
- ssp = env->segs[R_SS].base + esp;
- if (shift == 1) {
- int old_eflags;
- if (env->eflags & VM_MASK) {
- ssp -= 4;
- stl(ssp, env->segs[R_GS].selector);
- ssp -= 4;
- stl(ssp, env->segs[R_FS].selector);
- ssp -= 4;
- stl(ssp, env->segs[R_DS].selector);
- ssp -= 4;
- stl(ssp, env->segs[R_ES].selector);
- }
- if (new_stack) {
- ssp -= 4;
- stl(ssp, old_ss);
- ssp -= 4;
- stl(ssp, old_esp);
- }
- ssp -= 4;
- old_eflags = compute_eflags();
- stl(ssp, old_eflags);
- ssp -= 4;
- stl(ssp, old_cs);
- ssp -= 4;
- stl(ssp, old_eip);
- if (has_error_code) {
- ssp -= 4;
- stl(ssp, error_code);
- }
- } else {
- if (new_stack) {
- ssp -= 2;
- stw(ssp, old_ss);
- ssp -= 2;
- stw(ssp, old_esp);
- }
- ssp -= 2;
- stw(ssp, compute_eflags());
- ssp -= 2;
- stw(ssp, old_cs);
- ssp -= 2;
- stw(ssp, old_eip);
- if (has_error_code) {
- ssp -= 2;
- stw(ssp, error_code);
- }
- }
-
- /* interrupt gate clear IF mask */
- if ((type & 1) == 0) {
- env->eflags &= ~IF_MASK;
- }
- env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK);
-}
-
-/* real mode interrupt */
-static void do_interrupt_real(int intno, int is_int, int error_code,
- unsigned int next_eip)
-{
- SegmentCache *dt;
- uint8_t *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(ptr);
- selector = lduw(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;
- esp -= 2;
- stw(ssp + (esp & 0xffff), compute_eflags());
- esp -= 2;
- stw(ssp + (esp & 0xffff), old_cs);
- esp -= 2;
- stw(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 = (uint8_t *)(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,
- unsigned int next_eip)
-{
- SegmentCache *dt;
- uint8_t *ptr;
- int dpl, cpl;
- uint32_t e2;
-
- dt = &env->idt;
- ptr = dt->base + (intno * 8);
- e2 = ldl(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 excution 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,
- unsigned int next_eip, int is_hw)
-{
- if (env->cr[0] & CR0_PE_MASK) {
- 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,
- unsigned int next_eip)
-{
- env->exception_index = intno;
- env->error_code = error_code;
- env->exception_is_int = is_int;
- env->exception_next_eip = next_eip;
- cpu_loop_exit();
-}
-
-/* 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);
-}
-
-#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 div64(uint32_t *q_ptr, uint64_t num, uint32_t den)
-{
- *q_ptr = num / den;
- return num % den;
-}
-
-int32_t idiv64(int32_t *q_ptr, int64_t num, int32_t den)
-{
- *q_ptr = num / den;
- return num % den;
-}
-#endif
-
-void helper_divl_EAX_T0(uint32_t eip)
-{
- unsigned int den, q, r;
- uint64_t num;
-
- num = EAX | ((uint64_t)EDX << 32);
- den = T0;
- if (den == 0) {
- EIP = eip;
- raise_exception(EXCP00_DIVZ);
- }
-#ifdef BUGGY_GCC_DIV64
- r = div64(&q, num, den);
-#else
- q = (num / den);
- r = (num % den);
-#endif
- EAX = q;
- EDX = r;
-}
-
-void helper_idivl_EAX_T0(uint32_t eip)
-{
- int den, q, r;
- int64_t num;
-
- num = EAX | ((uint64_t)EDX << 32);
- den = T0;
- if (den == 0) {
- EIP = eip;
- raise_exception(EXCP00_DIVZ);
- }
-#ifdef BUGGY_GCC_DIV64
- r = idiv64(&q, num, den);
-#else
- q = (num / den);
- r = (num % den);
-#endif
- EAX = q;
- EDX = r;
-}
-
-void helper_cmpxchg8b(void)
-{
- uint64_t d;
- int eflags;
-
- eflags = cc_table[CC_OP].compute_all();
- d = ldq((uint8_t *)A0);
- if (d == (((uint64_t)EDX << 32) | EAX)) {
- stq((uint8_t *)A0, ((uint64_t)ECX << 32) | EBX);
- eflags |= CC_Z;
- } else {
- EDX = d >> 32;
- EAX = d;
- eflags &= ~CC_Z;
- }
- CC_SRC = eflags;
-}
-
-/* We simulate a pre-MMX pentium as in valgrind */
-#define CPUID_FP87 (1 << 0)
-#define CPUID_VME (1 << 1)
-#define CPUID_DE (1 << 2)
-#define CPUID_PSE (1 << 3)
-#define CPUID_TSC (1 << 4)
-#define CPUID_MSR (1 << 5)
-#define CPUID_PAE (1 << 6)
-#define CPUID_MCE (1 << 7)
-#define CPUID_CX8 (1 << 8)
-#define CPUID_APIC (1 << 9)
-#define CPUID_SEP (1 << 11) /* sysenter/sysexit */
-#define CPUID_MTRR (1 << 12)
-#define CPUID_PGE (1 << 13)
-#define CPUID_MCA (1 << 14)
-#define CPUID_CMOV (1 << 15)
-/* ... */
-#define CPUID_MMX (1 << 23)
-#define CPUID_FXSR (1 << 24)
-#define CPUID_SSE (1 << 25)
-#define CPUID_SSE2 (1 << 26)
-
-void helper_cpuid(void)
-{
- if (EAX == 0) {
- EAX = 1; /* max EAX index supported */
- EBX = 0x756e6547;
- ECX = 0x6c65746e;
- EDX = 0x49656e69;
- } else if (EAX == 1) {
- int family, model, stepping;
- /* EAX = 1 info */
-#if 0
- /* pentium 75-200 */
- family = 5;
- model = 2;
- stepping = 11;
-#else
- /* pentium pro */
- family = 6;
- model = 1;
- stepping = 3;
-#endif
- EAX = (family << 8) | (model << 4) | stepping;
- EBX = 0;
- ECX = 0;
- EDX = CPUID_FP87 | CPUID_DE | CPUID_PSE |
- CPUID_TSC | CPUID_MSR | CPUID_MCE |
- CPUID_CX8 | CPUID_PGE | CPUID_CMOV;
- }
-}
-
-void helper_lldt_T0(void)
-{
- int selector;
- SegmentCache *dt;
- uint32_t e1, e2;
- int index;
- uint8_t *ptr;
-
- selector = T0 & 0xffff;
- if ((selector & 0xfffc) == 0) {
- /* XXX: NULL selector case: invalid LDT */
- env->ldt.base = NULL;
- env->ldt.limit = 0;
- } else {
- if (selector & 0x4)
- raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
- dt = &env->gdt;
- index = selector & ~7;
- if ((index + 7) > dt->limit)
- raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
- ptr = dt->base + index;
- e1 = ldl(ptr);
- e2 = ldl(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);
- 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;
- uint8_t *ptr;
-
- selector = T0 & 0xffff;
- if ((selector & 0xfffc) == 0) {
- /* NULL selector case: invalid LDT */
- env->tr.base = NULL;
- 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;
- if ((index + 7) > dt->limit)
- raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
- ptr = dt->base + index;
- e1 = ldl(ptr);
- e2 = ldl(ptr + 4);
- type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
- if ((e2 & DESC_S_MASK) ||
- (type != 2 && type != 9))
- raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
- if (!(e2 & DESC_P_MASK))
- raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
- load_seg_cache_raw_dt(&env->tr, e1, e2);
- e2 |= 0x00000200; /* set the busy bit */
- stl(ptr + 4, e2);
- }
- env->tr.selector = selector;
-}
-
-/* only works if protected mode and not VM86. Calling load_seg with
- seg_reg == R_CS is discouraged */
-void load_seg(int seg_reg, int selector, unsigned int cur_eip)
-{
- uint32_t e1, e2;
-
- if ((selector & 0xfffc) == 0) {
- /* null selector case */
- if (seg_reg == R_SS) {
- EIP = cur_eip;
- raise_exception_err(EXCP0D_GPF, 0);
- } else {
- cpu_x86_load_seg_cache(env, seg_reg, selector, NULL, 0, 0);
- }
- } else {
- if (load_segment(&e1, &e2, selector) != 0) {
- EIP = cur_eip;
- raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
- }
- if (!(e2 & DESC_S_MASK) ||
- (e2 & (DESC_CS_MASK | DESC_R_MASK)) == DESC_CS_MASK) {
- EIP = cur_eip;
- raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
- }
-
- if (seg_reg == R_SS) {
- if ((e2 & (DESC_CS_MASK | DESC_W_MASK)) == 0) {
- EIP = cur_eip;
- raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
- }
- } else {
- if ((e2 & (DESC_CS_MASK | DESC_R_MASK)) == DESC_CS_MASK) {
- EIP = cur_eip;
- raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
- }
- }
-
- if (!(e2 & DESC_P_MASK)) {
- EIP = cur_eip;
- if (seg_reg == R_SS)
- raise_exception_err(EXCP0C_STACK, selector & 0xfffc);
- else
- raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
- }
- 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(void)
-{
- int new_cs, new_eip;
- uint32_t e1, e2, cpl, dpl, rpl, limit;
-
- 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_CS_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)
- 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 {
- cpu_abort(env, "jmp to call/task gate not supported 0x%04x:0x%08x",
- new_cs, new_eip);
- }
-}
-
-/* real mode call */
-void helper_lcall_real_T0_T1(int shift, int next_eip)
-{
- int new_cs, new_eip;
- uint32_t esp, esp_mask;
- uint8_t *ssp;
-
- new_cs = T0;
- new_eip = T1;
- esp = ESP;
- esp_mask = 0xffffffff;
- if (!(env->segs[R_SS].flags & DESC_B_MASK))
- esp_mask = 0xffff;
- ssp = env->segs[R_SS].base;
- if (shift) {
- esp -= 4;
- stl(ssp + (esp & esp_mask), env->segs[R_CS].selector);
- esp -= 4;
- stl(ssp + (esp & esp_mask), next_eip);
- } else {
- esp -= 2;
- stw(ssp + (esp & esp_mask), env->segs[R_CS].selector);
- esp -= 2;
- stw(ssp + (esp & esp_mask), next_eip);
- }
-
- if (!(env->segs[R_SS].flags & DESC_B_MASK))
- ESP = (ESP & ~0xffff) | (esp & 0xffff);
- else
- ESP = esp;
- env->eip = new_eip;
- env->segs[R_CS].selector = new_cs;
- env->segs[R_CS].base = (uint8_t *)(new_cs << 4);
-}
-
-/* protected mode call */
-void helper_lcall_protected_T0_T1(int shift, int next_eip)
-{
- int new_cs, new_eip;
- uint32_t e1, e2, cpl, dpl, rpl, selector, offset, param_count;
- uint32_t ss, ss_e1, ss_e2, push_size, sp, type, ss_dpl;
- uint32_t old_ss, old_esp, val, i, limit;
- uint8_t *ssp, *old_ssp;
-
- 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_CS_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);
-
- sp = ESP;
- if (!(env->segs[R_SS].flags & DESC_B_MASK))
- sp &= 0xffff;
- ssp = env->segs[R_SS].base + sp;
- if (shift) {
- ssp -= 4;
- stl(ssp, env->segs[R_CS].selector);
- ssp -= 4;
- stl(ssp, next_eip);
- } else {
- ssp -= 2;
- stw(ssp, env->segs[R_CS].selector);
- ssp -= 2;
- stw(ssp, next_eip);
- }
- sp -= (4 << shift);
-
- limit = get_seg_limit(e1, e2);
- if (new_eip > limit)
- raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
- /* from this point, not restartable */
- if (!(env->segs[R_SS].flags & DESC_B_MASK))
- ESP = (ESP & 0xffff0000) | (sp & 0xffff);
- else
- ESP = sp;
- 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;
- switch(type) {
- case 1: /* available 286 TSS */
- case 9: /* available 386 TSS */
- case 5: /* task gate */
- cpu_abort(env, "task gate not supported");
- break;
- case 4: /* 286 call gate */
- case 12: /* 386 call gate */
- break;
- default:
- raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
- break;
- }
- shift = type >> 3;
-
- dpl = (e2 >> DESC_DPL_SHIFT) & 3;
- rpl = new_cs & 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);
- 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);
- 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);
-
- param_count = e2 & 0x1f;
- push_size = ((param_count * 2) + 8) << shift;
-
- old_esp = ESP;
- old_ss = env->segs[R_SS].selector;
- if (!(env->segs[R_SS].flags & DESC_B_MASK))
- old_esp &= 0xffff;
- old_ssp = env->segs[R_SS].base + old_esp;
-
- /* XXX: from this point not restartable */
- ss = (ss & ~3) | dpl;
- cpu_x86_load_seg_cache(env, R_SS, ss,
- get_seg_base(ss_e1, ss_e2),
- get_seg_limit(ss_e1, ss_e2),
- ss_e2);
-
- if (!(env->segs[R_SS].flags & DESC_B_MASK))
- sp &= 0xffff;
- ssp = env->segs[R_SS].base + sp;
- if (shift) {
- ssp -= 4;
- stl(ssp, old_ss);
- ssp -= 4;
- stl(ssp, old_esp);
- ssp -= 4 * param_count;
- for(i = 0; i < param_count; i++) {
- val = ldl(old_ssp + i * 4);
- stl(ssp + i * 4, val);
- }
- } else {
- ssp -= 2;
- stw(ssp, old_ss);
- ssp -= 2;
- stw(ssp, old_esp);
- ssp -= 2 * param_count;
- for(i = 0; i < param_count; i++) {
- val = lduw(old_ssp + i * 2);
- stw(ssp + i * 2, val);
- }
- }
- } else {
- /* to same priviledge */
- if (!(env->segs[R_SS].flags & DESC_B_MASK))
- sp &= 0xffff;
- ssp = env->segs[R_SS].base + sp;
- push_size = (4 << shift);
- }
-
- if (shift) {
- ssp -= 4;
- stl(ssp, env->segs[R_CS].selector);
- ssp -= 4;
- stl(ssp, next_eip);
- } else {
- ssp -= 2;
- stw(ssp, env->segs[R_CS].selector);
- ssp -= 2;
- stw(ssp, next_eip);
- }
-
- sp -= push_size;
- 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);
-
- /* from this point, not restartable if same priviledge */
- if (!(env->segs[R_SS].flags & DESC_B_MASK))
- ESP = (ESP & 0xffff0000) | (sp & 0xffff);
- else
- ESP = sp;
- EIP = offset;
- }
-}
-
-/* real mode iret */
-void helper_iret_real(int shift)
-{
- uint32_t sp, new_cs, new_eip, new_eflags, new_esp;
- uint8_t *ssp;
- int eflags_mask;
-
- sp = ESP & 0xffff;
- ssp = env->segs[R_SS].base + sp;
- if (shift == 1) {
- /* 32 bits */
- new_eflags = ldl(ssp + 8);
- new_cs = ldl(ssp + 4) & 0xffff;
- new_eip = ldl(ssp) & 0xffff;
- } else {
- /* 16 bits */
- new_eflags = lduw(ssp + 4);
- new_cs = lduw(ssp + 2);
- new_eip = lduw(ssp);
- }
- new_esp = sp + (6 << shift);
- ESP = (ESP & 0xffff0000) |
- (new_esp & 0xffff);
- load_seg_vm(R_CS, new_cs);
- env->eip = new_eip;
- eflags_mask = FL_UPDATE_CPL0_MASK;
- if (shift == 0)
- eflags_mask &= 0xffff;
- load_eflags(new_eflags, eflags_mask);
-}
-
-/* protected mode iret */
-static inline void helper_ret_protected(int shift, int is_iret, int addend)
-{
- uint32_t sp, new_cs, new_eip, new_eflags, new_esp, 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;
- uint8_t *ssp;
-
- sp = ESP;
- if (!(env->segs[R_SS].flags & DESC_B_MASK))
- sp &= 0xffff;
- ssp = env->segs[R_SS].base + sp;
- if (shift == 1) {
- /* 32 bits */
- if (is_iret)
- new_eflags = ldl(ssp + 8);
- new_cs = ldl(ssp + 4) & 0xffff;
- new_eip = ldl(ssp);
- if (is_iret && (new_eflags & VM_MASK))
- goto return_to_vm86;
- } else {
- /* 16 bits */
- if (is_iret)
- new_eflags = lduw(ssp + 4);
- new_cs = lduw(ssp + 2);
- new_eip = lduw(ssp);
- }
- 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_CS_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);
-
- if (rpl == cpl) {
- /* 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);
- new_esp = sp + (4 << shift) + ((2 * is_iret) << shift) + addend;
- } else {
- /* return to different priviledge level */
- ssp += (4 << shift) + ((2 * is_iret) << shift) + addend;
- if (shift == 1) {
- /* 32 bits */
- new_esp = ldl(ssp);
- new_ss = ldl(ssp + 4) & 0xffff;
- } else {
- /* 16 bits */
- new_esp = lduw(ssp);
- new_ss = lduw(ssp + 2);
- }
-
- 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_CS, new_cs,
- get_seg_base(e1, e2),
- get_seg_limit(e1, e2),
- e2);
- 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_set_cpl(env, rpl);
- }
- if (env->segs[R_SS].flags & DESC_B_MASK)
- ESP = new_esp;
- else
- ESP = (ESP & 0xffff0000) |
- (new_esp & 0xffff);
- env->eip = new_eip;
- if (is_iret) {
- /* NOTE: 'cpl' can be different from the current CPL */
- if (cpl == 0)
- eflags_mask = FL_UPDATE_CPL0_MASK;
- else
- eflags_mask = FL_UPDATE_MASK32;
- if (shift == 0)
- eflags_mask &= 0xffff;
- load_eflags(new_eflags, eflags_mask);
- }
- return;
-
- return_to_vm86:
- new_esp = ldl(ssp + 12);
- new_ss = ldl(ssp + 16);
- new_es = ldl(ssp + 20);
- new_ds = ldl(ssp + 24);
- new_fs = ldl(ssp + 28);
- new_gs = ldl(ssp + 32);
-
- /* modify processor state */
- load_eflags(new_eflags, FL_UPDATE_CPL0_MASK | VM_MASK | VIF_MASK | VIP_MASK);
- load_seg_vm(R_CS, new_cs);
- cpu_x86_set_cpl(env, 3);
- load_seg_vm(R_SS, new_ss);
- load_seg_vm(R_ES, new_es);
- load_seg_vm(R_DS, new_ds);
- load_seg_vm(R_FS, new_fs);
- load_seg_vm(R_GS, new_gs);
-
- env->eip = new_eip;
- ESP = new_esp;
-}
-
-void helper_iret_protected(int shift)
-{
- helper_ret_protected(shift, 1, 0);
-}
-
-void helper_lret_protected(int shift, int addend)
-{
- helper_ret_protected(shift, 0, addend);
-}
-
-void helper_movl_crN_T0(int reg)
-{
- env->cr[reg] = T0;
- switch(reg) {
- case 0:
- cpu_x86_update_cr0(env);
- break;
- case 3:
- cpu_x86_update_cr3(env);
- break;
- }
-}
-
-/* XXX: do more */
-void helper_movl_drN_T0(int reg)
-{
- env->dr[reg] = T0;
-}
-
-void helper_invlpg(unsigned int addr)
-{
- cpu_x86_flush_tlb(env, addr);
-}
-
-/* rdtsc */
-#ifndef __i386__
-uint64_t emu_time;
-#endif
-
-void helper_rdtsc(void)
-{
- uint64_t val;
-#ifdef __i386__
- asm("rdtsc" : "=A" (val));
-#else
- /* better than nothing: the time increases */
- val = emu_time++;
-#endif
- EAX = val;
- EDX = val >> 32;
-}
-
-void helper_wrmsr(void)
-{
- switch(ECX) {
- case MSR_IA32_SYSENTER_CS:
- env->sysenter_cs = EAX & 0xffff;
- break;
- case MSR_IA32_SYSENTER_ESP:
- env->sysenter_esp = EAX;
- break;
- case MSR_IA32_SYSENTER_EIP:
- env->sysenter_eip = EAX;
- break;
- default:
- /* XXX: exception ? */
- break;
- }
-}
-
-void helper_rdmsr(void)
-{
- switch(ECX) {
- case MSR_IA32_SYSENTER_CS:
- EAX = env->sysenter_cs;
- EDX = 0;
- break;
- case MSR_IA32_SYSENTER_ESP:
- EAX = env->sysenter_esp;
- EDX = 0;
- break;
- case MSR_IA32_SYSENTER_EIP:
- EAX = env->sysenter_eip;
- EDX = 0;
- break;
- default:
- /* XXX: exception ? */
- break;
- }
-}
-
-void helper_lsl(void)
-{
- unsigned int selector, limit;
- uint32_t e1, e2;
-
- CC_SRC = cc_table[CC_OP].compute_all() & ~CC_Z;
- selector = T0 & 0xffff;
- if (load_segment(&e1, &e2, selector) != 0)
- return;
- limit = (e1 & 0xffff) | (e2 & 0x000f0000);
- if (e2 & (1 << 23))
- limit = (limit << 12) | 0xfff;
- T1 = limit;
- CC_SRC |= CC_Z;
-}
-
-void helper_lar(void)
-{
- unsigned int selector;
- uint32_t e1, e2;
-
- CC_SRC = cc_table[CC_OP].compute_all() & ~CC_Z;
- selector = T0 & 0xffff;
- if (load_segment(&e1, &e2, selector) != 0)
- return;
- T1 = e2 & 0x00f0ff00;
- CC_SRC |= CC_Z;
-}
-
-/* FPU helpers */
-
-#ifndef USE_X86LDOUBLE
-void helper_fldt_ST0_A0(void)
-{
- int new_fpstt;
- new_fpstt = (env->fpstt - 1) & 7;
- env->fpregs[new_fpstt] = helper_fldt((uint8_t *)A0);
- env->fpstt = new_fpstt;
- env->fptags[new_fpstt] = 0; /* validate stack entry */
-}
-
-void helper_fstt_ST0_A0(void)
-{
- helper_fstt(ST0, (uint8_t *)A0);
-}
-#endif
-
-/* BCD ops */
-
-#define MUL10(iv) ( iv + iv + (iv << 3) )
-
-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((uint8_t *)A0 + i);
- val = (val * 100) + ((v >> 4) * 10) + (v & 0xf);
- }
- tmp = val;
- if (ldub((uint8_t *)A0 + 9) & 0x80)
- tmp = -tmp;
- fpush();
- ST0 = tmp;
-}
-
-void helper_fbst_ST0_A0(void)
-{
- CPU86_LDouble tmp;
- int v;
- uint8_t *mem_ref, *mem_end;
- int64_t val;
-
- tmp = rint(ST0);
- val = (int64_t)tmp;
- mem_ref = (uint8_t *)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)
-{
- CPU86_LDouble a;
-
- a = ST0;
-#ifdef __arm__
- switch(env->fpuc & RC_MASK) {
- default:
- case RC_NEAR:
- asm("rndd %0, %1" : "=f" (a) : "f"(a));
- break;
- case RC_DOWN:
- asm("rnddm %0, %1" : "=f" (a) : "f"(a));
- break;
- case RC_UP:
- asm("rnddp %0, %1" : "=f" (a) : "f"(a));
- break;
- case RC_CHOP:
- asm("rnddz %0, %1" : "=f" (a) : "f"(a));
- break;
- }
-#else
- a = rint(a);
-#endif
- ST0 = a;
-}
-
-void helper_fscale(void)
-{
- CPU86_LDouble fpsrcop, fptemp;
-
- fpsrcop = 2.0;
- fptemp = pow(fpsrcop,ST1);
- ST0 *= fptemp;
-}
-
-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 */
-
- expdif = EXPD(temp);
- if (expdif == MAXEXPD) {
- if (MANTD(temp) == 0)
- 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(uint8_t *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];
- 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);
- stl(ptr + 16, 0);
- stl(ptr + 20, 0);
- stl(ptr + 24, 0);
- } 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(uint8_t *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 < 7; i++) {
- env->fptags[i] = ((fptag & 3) == 3);
- fptag >>= 2;
- }
-}
-
-void helper_fsave(uint8_t *ptr, int data32)
-{
- CPU86_LDouble tmp;
- int i;
-
- helper_fstenv(ptr, data32);
-
- ptr += (14 << data32);
- for(i = 0;i < 8; i++) {
- tmp = ST(i);
-#ifdef USE_X86LDOUBLE
- *(long double *)ptr = tmp;
-#else
- helper_fstt(tmp, ptr);
-#endif
- 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(uint8_t *ptr, int data32)
-{
- CPU86_LDouble tmp;
- int i;
-
- helper_fldenv(ptr, data32);
- ptr += (14 << data32);
-
- for(i = 0;i < 8; i++) {
-#ifdef USE_X86LDOUBLE
- tmp = *(long double *)ptr;
-#else
- tmp = helper_fldt(ptr);
-#endif
- ST(i) = tmp;
- ptr += 10;
- }
-}
-
-#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"
-
-/* try to fill the TLB and return an exception if error */
-void tlb_fill(unsigned long addr, int is_write, void *retaddr)
-{
- TranslationBlock *tb;
- int ret;
- unsigned long pc;
- ret = cpu_x86_handle_mmu_fault(env, addr, is_write);
- if (ret) {
- /* 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);
- }
- raise_exception_err(EXCP0E_PAGE, env->error_code);
- }
-}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-12 23:02:54 +0000