*/
#include "exec-i386.h"
-/* NOTE: data are not static to force relocation generation by GCC */
-
-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,
-};
-
-#ifdef USE_X86LDOUBLE
-/* an array of Intel 80-bit FP constants, to be loaded via integer ops */
-typedef unsigned short f15ld[5];
-const f15ld f15rk[] =
-{
-/*0*/ {0x0000,0x0000,0x0000,0x0000,0x0000},
-/*1*/ {0x0000,0x0000,0x0000,0x8000,0x3fff},
-/*pi*/ {0xc235,0x2168,0xdaa2,0xc90f,0x4000},
-/*lg2*/ {0xf799,0xfbcf,0x9a84,0x9a20,0x3ffd},
-/*ln2*/ {0x79ac,0xd1cf,0x17f7,0xb172,0x3ffe},
-/*l2e*/ {0xf0bc,0x5c17,0x3b29,0xb8aa,0x3fff},
-/*l2t*/ {0x8afe,0xcd1b,0x784b,0xd49a,0x4000}
-};
-#else
-/* the same, 64-bit version */
-typedef unsigned short f15ld[4];
-const f15ld f15rk[] =
-{
-#ifndef WORDS_BIGENDIAN
-/*0*/ {0x0000,0x0000,0x0000,0x0000},
-/*1*/ {0x0000,0x0000,0x0000,0x3ff0},
-/*pi*/ {0x2d18,0x5444,0x21fb,0x4009},
-/*lg2*/ {0x79ff,0x509f,0x4413,0x3fd3},
-/*ln2*/ {0x39ef,0xfefa,0x2e42,0x3fe6},
-/*l2e*/ {0x82fe,0x652b,0x1547,0x3ff7},
-/*l2t*/ {0xa371,0x0979,0x934f,0x400a}
-#else
-/*0*/ {0x0000,0x0000,0x0000,0x0000},
-/*1*/ {0x3ff0,0x0000,0x0000,0x0000},
-/*pi*/ {0x4009,0x21fb,0x5444,0x2d18},
-/*lg2*/ {0x3fd3,0x4413,0x509f,0x79ff},
-/*ln2*/ {0x3fe6,0x2e42,0xfefa,0x39ef},
-/*l2e*/ {0x3ff7,0x1547,0x652b,0x82fe},
-/*l2t*/ {0x400a,0x934f,0x0979,0xa371}
-#endif
-};
-#endif
-
/* n must be a constant to be efficient */
static inline int lshift(int x, int n)
{
/* operations with flags */
-void OPPROTO op_addl_T0_T1_cc(void)
+/* update flags with T0 and T1 (add/sub case) */
+void OPPROTO op_update2_cc(void)
{
- CC_SRC = T0;
- T0 += T1;
+ CC_SRC = T1;
CC_DST = T0;
}
-void OPPROTO op_orl_T0_T1_cc(void)
+/* update flags with T0 (logic operation case) */
+void OPPROTO op_update1_cc(void)
{
- T0 |= T1;
CC_DST = T0;
}
-void OPPROTO op_andl_T0_T1_cc(void)
+void OPPROTO op_update_neg_cc(void)
{
- T0 &= T1;
- CC_DST = T0;
-}
-
-void OPPROTO op_subl_T0_T1_cc(void)
-{
- CC_SRC = T0;
- T0 -= T1;
- CC_DST = T0;
-}
-
-void OPPROTO op_xorl_T0_T1_cc(void)
-{
- T0 ^= T1;
+ CC_SRC = -T0;
CC_DST = T0;
}
void OPPROTO op_cmpl_T0_T1_cc(void)
{
- CC_SRC = T0;
+ CC_SRC = T1;
CC_DST = T0 - T1;
}
-void OPPROTO op_negl_T0_cc(void)
-{
- CC_SRC = 0;
- T0 = -T0;
- CC_DST = T0;
-}
-
-void OPPROTO op_incl_T0_cc(void)
-{
- CC_SRC = cc_table[CC_OP].compute_c();
- T0++;
- CC_DST = T0;
-}
-
-void OPPROTO op_decl_T0_cc(void)
+void OPPROTO op_update_inc_cc(void)
{
CC_SRC = cc_table[CC_OP].compute_c();
- T0--;
CC_DST = T0;
}
/* division, flags are undefined */
/* XXX: add exceptions for overflow */
+
void OPPROTO op_divb_AL_T0(void)
{
unsigned int num, den, q, r;
num = (EAX & 0xffff);
den = (T0 & 0xff);
- if (den == 0)
+ if (den == 0) {
+ EIP = PARAM1;
raise_exception(EXCP00_DIVZ);
+ }
q = (num / den) & 0xff;
r = (num % den) & 0xff;
EAX = (EAX & 0xffff0000) | (r << 8) | q;
num = (int16_t)EAX;
den = (int8_t)T0;
- if (den == 0)
+ if (den == 0) {
+ EIP = PARAM1;
raise_exception(EXCP00_DIVZ);
+ }
q = (num / den) & 0xff;
r = (num % den) & 0xff;
EAX = (EAX & 0xffff0000) | (r << 8) | q;
num = (EAX & 0xffff) | ((EDX & 0xffff) << 16);
den = (T0 & 0xffff);
- if (den == 0)
+ if (den == 0) {
+ EIP = PARAM1;
raise_exception(EXCP00_DIVZ);
+ }
q = (num / den) & 0xffff;
r = (num % den) & 0xffff;
EAX = (EAX & 0xffff0000) | q;
num = (EAX & 0xffff) | ((EDX & 0xffff) << 16);
den = (int16_t)T0;
- if (den == 0)
+ if (den == 0) {
+ EIP = PARAM1;
raise_exception(EXCP00_DIVZ);
+ }
q = (num / den) & 0xffff;
r = (num % den) & 0xffff;
EAX = (EAX & 0xffff0000) | q;
EDX = (EDX & 0xffff0000) | r;
}
-#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 OPPROTO op_divl_EAX_T0(void)
{
- unsigned int den, q, r;
- uint64_t num;
-
- num = EAX | ((uint64_t)EDX << 32);
- den = T0;
- if (den == 0)
- 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;
+ helper_divl_EAX_T0(PARAM1);
}
void OPPROTO op_idivl_EAX_T0(void)
{
- int den, q, r;
- int64_t num;
-
- num = EAX | ((uint64_t)EDX << 32);
- den = T0;
- if (den == 0)
- 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;
+ helper_idivl_EAX_T0(PARAM1);
}
/* constant load & misc op */
T0 = T0 & 0xffff;
}
+void OPPROTO op_andl_T0_im(void)
+{
+ T0 = T0 & PARAM1;
+}
+
void OPPROTO op_movl_T0_T1(void)
{
T0 = T1;
EIP = PARAM1;
}
-void OPPROTO op_int_im(void)
+void OPPROTO op_hlt(void)
+{
+ env->exception_index = EXCP_HLT;
+ cpu_loop_exit();
+}
+
+void OPPROTO op_raise_interrupt(void)
{
int intno;
+ unsigned int next_eip;
intno = PARAM1;
- EIP = PARAM2;
- raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
+ next_eip = PARAM2;
+ raise_interrupt(intno, 1, 0, next_eip);
}
-void OPPROTO op_int3(void)
+void OPPROTO op_raise_exception(void)
{
- EIP = PARAM1;
- raise_exception(EXCP03_INT3);
+ int exception_index;
+ exception_index = PARAM1;
+ raise_exception(exception_index);
}
void OPPROTO op_into(void)
int eflags;
eflags = cc_table[CC_OP].compute_all();
if (eflags & CC_O) {
- raise_exception(EXCP04_INTO);
+ raise_interrupt(EXCP04_INTO, 1, 0, PARAM1);
}
FORCE_RET();
}
-void OPPROTO op_gpf(void)
-{
- EIP = PARAM1;
- raise_exception(EXCP0D_GPF);
-}
-
void OPPROTO op_cli(void)
{
env->eflags &= ~IF_MASK;
low = ldsw((uint8_t *)A0);
high = ldsw((uint8_t *)A0 + 2);
v = (int16_t)T0;
- if (v < low || v > high)
+ if (v < low || v > high) {
+ EIP = PARAM1;
raise_exception(EXCP05_BOUND);
+ }
FORCE_RET();
}
low = ldl((uint8_t *)A0);
high = ldl((uint8_t *)A0 + 4);
v = T0;
- if (v < low || v > high)
+ if (v < low || v > high) {
+ EIP = PARAM1;
raise_exception(EXCP05_BOUND);
+ }
FORCE_RET();
}
void OPPROTO op_cmpxchg8b(void)
{
- uint64_t d;
- int eflags;
+ helper_cmpxchg8b();
+}
- 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;
- FORCE_RET();
+void OPPROTO op_jmp_tb_next(void)
+{
+ JUMP_TB(PARAM1, 0, PARAM2);
}
-/* string ops */
+void OPPROTO op_movl_T0_0(void)
+{
+ T0 = 0;
+}
+
+/* multiple size ops */
#define ldul ldl
{
uint32_t offset;
offset = ESP - 4;
- stl(env->seg_cache[R_SS].base + offset, T0);
+ stl(env->segs[R_SS].base + offset, T0);
/* modify ESP after to handle exceptions correctly */
ESP = offset;
}
{
uint32_t offset;
offset = ESP - 2;
- stw(env->seg_cache[R_SS].base + offset, T0);
+ stw(env->segs[R_SS].base + offset, T0);
/* modify ESP after to handle exceptions correctly */
ESP = offset;
}
{
uint32_t offset;
offset = (ESP - 4) & 0xffff;
- stl(env->seg_cache[R_SS].base + offset, T0);
+ stl(env->segs[R_SS].base + offset, T0);
/* modify ESP after to handle exceptions correctly */
ESP = (ESP & ~0xffff) | offset;
}
{
uint32_t offset;
offset = (ESP - 2) & 0xffff;
- stw(env->seg_cache[R_SS].base + offset, T0);
+ stw(env->segs[R_SS].base + offset, T0);
/* modify ESP after to handle exceptions correctly */
ESP = (ESP & ~0xffff) | offset;
}
void op_popl_ss32_T0(void)
{
- T0 = ldl(env->seg_cache[R_SS].base + ESP);
+ T0 = ldl(env->segs[R_SS].base + ESP);
}
void op_popw_ss32_T0(void)
{
- T0 = lduw(env->seg_cache[R_SS].base + ESP);
+ T0 = lduw(env->segs[R_SS].base + ESP);
}
void op_popl_ss16_T0(void)
{
- T0 = ldl(env->seg_cache[R_SS].base + (ESP & 0xffff));
+ T0 = ldl(env->segs[R_SS].base + (ESP & 0xffff));
}
void op_popw_ss16_T0(void)
{
- T0 = lduw(env->seg_cache[R_SS].base + (ESP & 0xffff));
+ T0 = lduw(env->segs[R_SS].base + (ESP & 0xffff));
}
void op_addl_ESP_4(void)
ESP = (ESP & ~0xffff) | ((ESP + PARAM1) & 0xffff);
}
-/* rdtsc */
-#ifndef __i386__
-uint64_t emu_time;
-#endif
-
void OPPROTO op_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;
-}
-
-/* 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 {
- /* EAX = 1 info */
- EAX = 0x52b;
- EBX = 0;
- ECX = 0;
- EDX = CPUID_FP87 | CPUID_DE | CPUID_PSE |
- CPUID_TSC | CPUID_MSR | CPUID_MCE |
- CPUID_CX8;
- }
+ helper_rdtsc();
}
void OPPROTO op_cpuid(void)
/* segment handling */
-/* XXX: use static VM86 information */
-void load_seg(int seg_reg, int selector)
+void OPPROTO op_movl_seg_T0(void)
{
- SegmentCache *sc;
- SegmentDescriptorTable *dt;
- int index;
- uint32_t e1, e2;
- uint8_t *ptr;
-
- sc = &env->seg_cache[seg_reg];
- if (env->eflags & VM_MASK) {
- sc->base = (void *)(selector << 4);
- sc->limit = 0xffff;
- sc->seg_32bit = 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);
- ptr = dt->base + index;
- e1 = ldl(ptr);
- e2 = ldl(ptr + 4);
- sc->base = (void *)((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000));
- sc->limit = (e1 & 0xffff) | (e2 & 0x000f0000);
- if (e2 & (1 << 23))
- sc->limit = (sc->limit << 12) | 0xfff;
- sc->seg_32bit = (e2 >> 22) & 1;
-#if 0
- fprintf(logfile, "load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx seg_32bit=%d\n",
- selector, (unsigned long)sc->base, sc->limit, sc->seg_32bit);
-#endif
- }
- env->segs[seg_reg] = selector;
+ load_seg(PARAM1, T0 & 0xffff, PARAM2);
}
-void OPPROTO op_movl_seg_T0(void)
+/* faster VM86 version */
+void OPPROTO op_movl_seg_T0_vm(void)
{
- load_seg(PARAM1, T0 & 0xffff);
+ int selector;
+ SegmentCache *sc;
+
+ selector = T0 & 0xffff;
+ /* env->segs[] access */
+ sc = (SegmentCache *)((char *)env + PARAM1);
+ sc->selector = selector;
+ sc->base = (void *)(selector << 4);
}
void OPPROTO op_movl_T0_seg(void)
{
- T0 = env->segs[PARAM1];
+ T0 = env->segs[PARAM1].selector;
}
void OPPROTO op_movl_A0_seg(void)
A0 += *(unsigned long *)((char *)env + PARAM1);
}
-/* flags handling */
+void OPPROTO op_lsl(void)
+{
+ helper_lsl();
+}
-/* slow jumps cases (compute x86 flags) */
-void OPPROTO op_jo_cc(void)
+void OPPROTO op_lar(void)
{
- int eflags;
- eflags = cc_table[CC_OP].compute_all();
- if (eflags & CC_O)
- EIP = PARAM1;
- else
- EIP = PARAM2;
- FORCE_RET();
+ helper_lar();
}
-void OPPROTO op_jb_cc(void)
+/* T0: segment, T1:eip */
+void OPPROTO op_ljmp_T0_T1(void)
{
- if (cc_table[CC_OP].compute_c())
- EIP = PARAM1;
- else
- EIP = PARAM2;
- FORCE_RET();
+ jmp_seg(T0 & 0xffff, T1);
}
-void OPPROTO op_jz_cc(void)
+void OPPROTO op_iret_protected(void)
{
- int eflags;
- eflags = cc_table[CC_OP].compute_all();
- if (eflags & CC_Z)
- EIP = PARAM1;
- else
- EIP = PARAM2;
- FORCE_RET();
+ helper_iret_protected(PARAM1);
}
-void OPPROTO op_jbe_cc(void)
+void OPPROTO op_lldt_T0(void)
{
- int eflags;
- eflags = cc_table[CC_OP].compute_all();
- if (eflags & (CC_Z | CC_C))
- EIP = PARAM1;
- else
- EIP = PARAM2;
- FORCE_RET();
+ helper_lldt_T0();
}
-void OPPROTO op_js_cc(void)
+void OPPROTO op_ltr_T0(void)
{
- int eflags;
- eflags = cc_table[CC_OP].compute_all();
- if (eflags & CC_S)
- EIP = PARAM1;
- else
- EIP = PARAM2;
- FORCE_RET();
+ helper_ltr_T0();
}
-void OPPROTO op_jp_cc(void)
+/* CR registers access */
+void OPPROTO op_movl_crN_T0(void)
{
- int eflags;
- eflags = cc_table[CC_OP].compute_all();
- if (eflags & CC_P)
- EIP = PARAM1;
- else
- EIP = PARAM2;
- FORCE_RET();
+ helper_movl_crN_T0(PARAM1);
}
-void OPPROTO op_jl_cc(void)
+/* DR registers access */
+void OPPROTO op_movl_drN_T0(void)
{
- int eflags;
- eflags = cc_table[CC_OP].compute_all();
- if ((eflags ^ (eflags >> 4)) & 0x80)
- EIP = PARAM1;
- else
- EIP = PARAM2;
- FORCE_RET();
+ helper_movl_drN_T0(PARAM1);
}
-void OPPROTO op_jle_cc(void)
+void OPPROTO op_lmsw_T0(void)
{
- int eflags;
- eflags = cc_table[CC_OP].compute_all();
- if (((eflags ^ (eflags >> 4)) & 0x80) || (eflags & CC_Z))
- EIP = PARAM1;
+ /* only 4 lower bits of CR0 are modified */
+ T0 = (env->cr[0] & ~0xf) | (T0 & 0xf);
+ helper_movl_crN_T0(0);
+}
+
+void OPPROTO op_invlpg_A0(void)
+{
+ helper_invlpg(A0);
+}
+
+void OPPROTO op_movl_T0_env(void)
+{
+ T0 = *(uint32_t *)((char *)env + PARAM1);
+}
+
+void OPPROTO op_movl_env_T0(void)
+{
+ *(uint32_t *)((char *)env + PARAM1) = T0;
+}
+
+void OPPROTO op_movl_env_T1(void)
+{
+ *(uint32_t *)((char *)env + PARAM1) = T1;
+}
+
+void OPPROTO op_clts(void)
+{
+ env->cr[0] &= ~CR0_TS_MASK;
+}
+
+/* flags handling */
+
+/* slow jumps cases : in order to avoid calling a function with a
+ pointer (which can generate a stack frame on PowerPC), we use
+ op_setcc to set T0 and then call op_jcc. */
+void OPPROTO op_jcc(void)
+{
+ if (T0)
+ JUMP_TB(PARAM1, 0, PARAM2);
else
- EIP = PARAM2;
+ JUMP_TB(PARAM1, 1, PARAM3);
FORCE_RET();
}
CC_OP = PARAM1;
}
-#define FL_UPDATE_MASK32 (TF_MASK | AC_MASK | ID_MASK)
-#define FL_UPDATE_MASK16 (TF_MASK)
+#define FL_UPDATE_MASK16 (FL_UPDATE_MASK32 & 0xffff)
void OPPROTO op_movl_eflags_T0(void)
{
CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
DF = 1 - (2 * ((eflags >> 10) & 1));
/* we also update some system flags as in user mode */
- env->eflags = (env->eflags & ~FL_UPDATE_MASK32) | (eflags & FL_UPDATE_MASK32);
+ env->eflags = (env->eflags & ~FL_UPDATE_MASK32) |
+ (eflags & FL_UPDATE_MASK32);
}
void OPPROTO op_movw_eflags_T0(void)
CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
DF = 1 - (2 * ((eflags >> 10) & 1));
/* we also update some system flags as in user mode */
- env->eflags = (env->eflags & ~FL_UPDATE_MASK16) | (eflags & FL_UPDATE_MASK16);
+ env->eflags = (env->eflags & ~FL_UPDATE_MASK16) |
+ (eflags & FL_UPDATE_MASK16);
+}
+
+void OPPROTO op_movl_eflags_T0_cpl0(void)
+{
+ load_eflags(T0, FL_UPDATE_CPL0_MASK);
+}
+
+void OPPROTO op_movw_eflags_T0_cpl0(void)
+{
+ load_eflags(T0, FL_UPDATE_CPL0_MASK & 0xffff);
}
#if 0
[CC_OP_DECW] = { compute_all_decw, compute_c_incl },
[CC_OP_DECL] = { compute_all_decl, compute_c_incl },
- [CC_OP_SHLB] = { compute_all_shlb, compute_c_shll },
- [CC_OP_SHLW] = { compute_all_shlw, compute_c_shll },
+ [CC_OP_SHLB] = { compute_all_shlb, compute_c_shlb },
+ [CC_OP_SHLW] = { compute_all_shlw, compute_c_shlw },
[CC_OP_SHLL] = { compute_all_shll, compute_c_shll },
- [CC_OP_SARB] = { compute_all_sarb, compute_c_shll },
- [CC_OP_SARW] = { compute_all_sarw, compute_c_shll },
- [CC_OP_SARL] = { compute_all_sarl, compute_c_shll },
+ [CC_OP_SARB] = { compute_all_sarb, compute_c_sarl },
+ [CC_OP_SARW] = { compute_all_sarw, compute_c_sarl },
+ [CC_OP_SARL] = { compute_all_sarl, compute_c_sarl },
};
/* floating point support. Some of the code for complicated x87
functions comes from the LGPL'ed x86 emulator found in the Willows
TWIN windows emulator. */
-#ifdef USE_X86LDOUBLE
-/* use long double functions */
-#define lrint lrintl
-#define llrint llrintl
-#define fabs fabsl
-#define sin sinl
-#define cos cosl
-#define sqrt sqrtl
-#define pow powl
-#define log logl
-#define tan tanl
-#define atan2 atan2l
-#define floor floorl
-#define ceil ceill
-#define rint rintl
-#endif
-
-extern int lrint(CPU86_LDouble x);
-extern int64_t llrint(CPU86_LDouble x);
-extern CPU86_LDouble fabs(CPU86_LDouble x);
-extern CPU86_LDouble sin(CPU86_LDouble x);
-extern CPU86_LDouble cos(CPU86_LDouble x);
-extern CPU86_LDouble sqrt(CPU86_LDouble x);
-extern CPU86_LDouble pow(CPU86_LDouble, CPU86_LDouble);
-extern CPU86_LDouble log(CPU86_LDouble x);
-extern CPU86_LDouble tan(CPU86_LDouble x);
-extern CPU86_LDouble atan2(CPU86_LDouble, CPU86_LDouble);
-extern CPU86_LDouble floor(CPU86_LDouble x);
-extern CPU86_LDouble ceil(CPU86_LDouble x);
-extern CPU86_LDouble rint(CPU86_LDouble x);
-
#if defined(__powerpc__)
extern CPU86_LDouble copysign(CPU86_LDouble, CPU86_LDouble);
#define rint qemu_rint
#endif
-#define RC_MASK 0xc00
-#define RC_NEAR 0x000
-#define RC_DOWN 0x400
-#define RC_UP 0x800
-#define RC_CHOP 0xc00
-
-#define MAXTAN 9223372036854775808.0
-
-#ifdef USE_X86LDOUBLE
-
-/* only for x86 */
-typedef union {
- long double d;
- struct {
- unsigned long long lower;
- unsigned short upper;
- } l;
-} CPU86_LDoubleU;
-
-/* the following deal with x86 long double-precision numbers */
-#define MAXEXPD 0x7fff
-#define EXPBIAS 16383
-#define EXPD(fp) (fp.l.upper & 0x7fff)
-#define SIGND(fp) ((fp.l.upper) & 0x8000)
-#define MANTD(fp) (fp.l.lower)
-#define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS
-
-#else
-
-typedef union {
- double d;
-#ifndef WORDS_BIGENDIAN
- struct {
- unsigned long lower;
- long upper;
- } l;
-#else
- struct {
- long upper;
- unsigned long lower;
- } l;
-#endif
- long long ll;
-} CPU86_LDoubleU;
-
-/* the following deal with IEEE double-precision numbers */
-#define MAXEXPD 0x7ff
-#define EXPBIAS 1023
-#define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
-#define SIGND(fp) ((fp.l.upper) & 0x80000000)
-#define MANTD(fp) (fp.ll & ((1LL << 52) - 1))
-#define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7ff << 20)) | (EXPBIAS << 20)
-#endif
-
/* fp load FT0 */
void OPPROTO op_flds_FT0_A0(void)
ST0 = *(long double *)A0;
}
#else
-void helper_fldt_ST0_A0(void)
-{
- CPU86_LDoubleU temp;
- int upper, e;
- /* mantissa */
- upper = lduw((uint8_t *)A0 + 8);
- /* XXX: handle overflow ? */
- e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */
- e |= (upper >> 4) & 0x800; /* sign */
- temp.ll = ((ldq((void *)A0) >> 11) & ((1LL << 52) - 1)) | ((uint64_t)e << 52);
- ST0 = temp.d;
-}
-
void OPPROTO op_fldt_ST0_A0(void)
{
helper_fldt_ST0_A0();
void OPPROTO op_fsts_ST0_A0(void)
{
#ifdef USE_FP_CONVERT
- FP_CONVERT.d = ST0;
+ FP_CONVERT.f = (float)ST0;
stfl((void *)A0, FP_CONVERT.f);
#else
stfl((void *)A0, (float)ST0);
*(long double *)A0 = ST0;
}
#else
-void helper_fstt_ST0_A0(void)
-{
- CPU86_LDoubleU temp;
- int e;
- temp.d = ST0;
- /* mantissa */
- stq((void *)A0, (MANTD(temp) << 11) | (1LL << 63));
- /* exponent + sign */
- e = EXPD(temp) - EXPBIAS + 16383;
- e |= SIGND(temp) >> 16;
- stw((uint8_t *)A0 + 8, e);
-}
-
void OPPROTO op_fstt_ST0_A0(void)
{
helper_fstt_ST0_A0();
d = ST0;
val = lrint(d);
+ if (val != (int16_t)val)
+ val = -32768;
stw((void *)A0, val);
}
stq((void *)A0, val);
}
-/* BCD ops */
-
-#define MUL10(iv) ( iv + iv + (iv << 3) )
-
-void helper_fbld_ST0_A0(void)
-{
- uint8_t *seg;
- CPU86_LDouble fpsrcop;
- int m32i;
- unsigned int v;
-
- /* in this code, seg/m32i will be used as temporary ptr/int */
- seg = (uint8_t *)A0 + 8;
- v = ldub(seg--);
- /* XXX: raise exception */
- if (v != 0)
- return;
- v = ldub(seg--);
- /* XXX: raise exception */
- if ((v & 0xf0) != 0)
- return;
- m32i = v; /* <-- d14 */
- v = ldub(seg--);
- m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d13 */
- m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d12 */
- v = ldub(seg--);
- m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d11 */
- m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d10 */
- v = ldub(seg--);
- m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d9 */
- m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d8 */
- fpsrcop = ((CPU86_LDouble)m32i) * 100000000.0;
-
- v = ldub(seg--);
- m32i = (v >> 4); /* <-- d7 */
- m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d6 */
- v = ldub(seg--);
- m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d5 */
- m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d4 */
- v = ldub(seg--);
- m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d3 */
- m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d2 */
- v = ldub(seg);
- m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d1 */
- m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d0 */
- fpsrcop += ((CPU86_LDouble)m32i);
- if ( ldub(seg+9) & 0x80 )
- fpsrcop = -fpsrcop;
- ST0 = fpsrcop;
-}
-
void OPPROTO op_fbld_ST0_A0(void)
{
helper_fbld_ST0_A0();
}
-void helper_fbst_ST0_A0(void)
-{
- CPU86_LDouble fptemp;
- CPU86_LDouble fpsrcop;
- int v;
- uint8_t *mem_ref, *mem_end;
-
- fpsrcop = rint(ST0);
- mem_ref = (uint8_t *)A0;
- mem_end = mem_ref + 8;
- if ( fpsrcop < 0.0 ) {
- stw(mem_end, 0x8000);
- fpsrcop = -fpsrcop;
- } else {
- stw(mem_end, 0x0000);
- }
- while (mem_ref < mem_end) {
- if (fpsrcop == 0.0)
- break;
- fptemp = floor(fpsrcop/10.0);
- v = ((int)(fpsrcop - fptemp*10.0));
- if (fptemp == 0.0) {
- stb(mem_ref++, v);
- break;
- }
- fpsrcop = fptemp;
- fptemp = floor(fpsrcop/10.0);
- v |= (((int)(fpsrcop - fptemp*10.0)) << 4);
- stb(mem_ref++, v);
- fpsrcop = fptemp;
- }
- while (mem_ref < mem_end) {
- stb(mem_ref++, 0);
- }
-}
-
void OPPROTO op_fbst_ST0_A0(void)
{
helper_fbst_ST0_A0();
/* FPU move */
-static inline void fpush(void)
-{
- env->fpstt = (env->fpstt - 1) & 7;
- env->fptags[env->fpstt] = 0; /* validate stack entry */
-}
-
-static inline void fpop(void)
-{
- env->fptags[env->fpstt] = 1; /* invvalidate stack entry */
- env->fpstt = (env->fpstt + 1) & 7;
-}
-
void OPPROTO op_fpush(void)
{
fpush();
FORCE_RET();
}
+/* XXX: handle nans */
+void OPPROTO op_fcomi_ST0_FT0(void)
+{
+ int eflags;
+ eflags = cc_table[CC_OP].compute_all();
+ eflags &= ~(CC_Z | CC_P | CC_C);
+ if (ST0 < FT0)
+ eflags |= CC_C;
+ else if (ST0 == FT0)
+ eflags |= CC_Z;
+ CC_SRC = eflags;
+ FORCE_RET();
+}
+
+/* XXX: handle nans */
+void OPPROTO op_fucomi_ST0_FT0(void)
+{
+ int eflags;
+ eflags = cc_table[CC_OP].compute_all();
+ eflags &= ~(CC_Z | CC_P | CC_C);
+ if (ST0 < FT0)
+ eflags |= CC_C;
+ else if (ST0 == FT0)
+ eflags |= CC_Z;
+ CC_SRC = eflags;
+ FORCE_RET();
+}
+
void OPPROTO op_fadd_ST0_FT0(void)
{
ST0 += FT0;
ST0 = fabs(ST0);
}
-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 OPPROTO op_fxam_ST0(void)
{
helper_fxam_ST0();
void OPPROTO op_fld1_ST0(void)
{
- ST0 = *(CPU86_LDouble *)&f15rk[1];
+ ST0 = f15rk[1];
}
void OPPROTO op_fldl2t_ST0(void)
{
- ST0 = *(CPU86_LDouble *)&f15rk[6];
+ ST0 = f15rk[6];
}
void OPPROTO op_fldl2e_ST0(void)
{
- ST0 = *(CPU86_LDouble *)&f15rk[5];
+ ST0 = f15rk[5];
}
void OPPROTO op_fldpi_ST0(void)
{
- ST0 = *(CPU86_LDouble *)&f15rk[2];
+ ST0 = f15rk[2];
}
void OPPROTO op_fldlg2_ST0(void)
{
- ST0 = *(CPU86_LDouble *)&f15rk[3];
+ ST0 = f15rk[3];
}
void OPPROTO op_fldln2_ST0(void)
{
- ST0 = *(CPU86_LDouble *)&f15rk[4];
+ ST0 = f15rk[4];
}
void OPPROTO op_fldz_ST0(void)
{
- ST0 = *(CPU86_LDouble *)&f15rk[0];
+ ST0 = f15rk[0];
}
void OPPROTO op_fldz_FT0(void)
{
- ST0 = *(CPU86_LDouble *)&f15rk[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 = rint(ST0);
-}
-
-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 */
- }
+ ST0 = f15rk[0];
}
/* associated heplers to reduce generated code length and to simplify
env->fptags[7] = 1;
}
+void OPPROTO op_fnstenv_A0(void)
+{
+ helper_fstenv((uint8_t *)A0, PARAM1);
+}
+
+void OPPROTO op_fldenv_A0(void)
+{
+ helper_fldenv((uint8_t *)A0, PARAM1);
+}
+
+void OPPROTO op_fnsave_A0(void)
+{
+ helper_fsave((uint8_t *)A0, PARAM1);
+}
+
+void OPPROTO op_frstor_A0(void)
+{
+ helper_frstor((uint8_t *)A0, PARAM1);
+}
+
/* threading support */
void OPPROTO op_lock(void)
{
{
cpu_unlock();
}
+
projects / qemu.git / blobdiff