more code moved to helpers
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@216 c046a42c-6fe2-441c-8c8c-71466251a162
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bellard
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142
op-i386.c
142
op-i386.c
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@ -19,8 +19,6 @@
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*/
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#include "exec-i386.h"
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/* NOTE: data are not static to force relocation generation by GCC */
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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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@ -72,44 +70,6 @@ const uint8_t rclb_table[32] = {
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6, 7, 8, 0, 1, 2, 3, 4,
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};
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#ifdef USE_X86LDOUBLE
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/* an array of Intel 80-bit FP constants, to be loaded via integer ops */
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typedef unsigned short f15ld[5];
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const f15ld f15rk[] =
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{
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/*0*/ {0x0000,0x0000,0x0000,0x0000,0x0000},
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/*1*/ {0x0000,0x0000,0x0000,0x8000,0x3fff},
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/*pi*/ {0xc235,0x2168,0xdaa2,0xc90f,0x4000},
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/*lg2*/ {0xf799,0xfbcf,0x9a84,0x9a20,0x3ffd},
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/*ln2*/ {0x79ac,0xd1cf,0x17f7,0xb172,0x3ffe},
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/*l2e*/ {0xf0bc,0x5c17,0x3b29,0xb8aa,0x3fff},
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/*l2t*/ {0x8afe,0xcd1b,0x784b,0xd49a,0x4000}
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};
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#else
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/* the same, 64-bit version */
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typedef unsigned short f15ld[4];
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const f15ld f15rk[] =
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{
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#ifndef WORDS_BIGENDIAN
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/*0*/ {0x0000,0x0000,0x0000,0x0000},
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/*1*/ {0x0000,0x0000,0x0000,0x3ff0},
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/*pi*/ {0x2d18,0x5444,0x21fb,0x4009},
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/*lg2*/ {0x79ff,0x509f,0x4413,0x3fd3},
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/*ln2*/ {0x39ef,0xfefa,0x2e42,0x3fe6},
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/*l2e*/ {0x82fe,0x652b,0x1547,0x3ff7},
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/*l2t*/ {0xa371,0x0979,0x934f,0x400a}
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#else
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/*0*/ {0x0000,0x0000,0x0000,0x0000},
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/*1*/ {0x3ff0,0x0000,0x0000,0x0000},
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/*pi*/ {0x4009,0x21fb,0x5444,0x2d18},
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/*lg2*/ {0x3fd3,0x4413,0x509f,0x79ff},
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/*ln2*/ {0x3fe6,0x2e42,0xfefa,0x39ef},
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/*l2e*/ {0x3ff7,0x1547,0x652b,0x82fe},
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/*l2t*/ {0x400a,0x934f,0x0979,0xa371}
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#endif
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};
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#endif
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/* n must be a constant to be efficient */
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static inline int lshift(int x, int n)
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{
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@ -358,6 +318,7 @@ void OPPROTO op_imull_T0_T1(void)
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/* division, flags are undefined */
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/* XXX: add exceptions for overflow */
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void OPPROTO op_divb_AL_T0(void)
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{
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unsigned int num, den, q, r;
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@ -420,62 +381,14 @@ void OPPROTO op_idivw_AX_T0(void)
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EDX = (EDX & 0xffff0000) | r;
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}
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#ifdef BUGGY_GCC_DIV64
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/* gcc 2.95.4 on PowerPC does not seem to like using __udivdi3, so we
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call it from another function */
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uint32_t div64(uint32_t *q_ptr, uint64_t num, uint32_t den)
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{
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*q_ptr = num / den;
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return num % den;
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}
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int32_t idiv64(int32_t *q_ptr, int64_t num, int32_t den)
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{
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*q_ptr = num / den;
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return num % den;
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}
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#endif
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void OPPROTO op_divl_EAX_T0(void)
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{
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unsigned int den, q, r;
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uint64_t num;
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num = EAX | ((uint64_t)EDX << 32);
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den = T0;
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if (den == 0) {
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EIP = PARAM1;
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raise_exception(EXCP00_DIVZ);
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}
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#ifdef BUGGY_GCC_DIV64
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r = div64(&q, num, den);
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#else
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q = (num / den);
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r = (num % den);
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#endif
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EAX = q;
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EDX = r;
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helper_divl_EAX_T0(PARAM1);
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}
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void OPPROTO op_idivl_EAX_T0(void)
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{
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int den, q, r;
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int64_t num;
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num = EAX | ((uint64_t)EDX << 32);
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den = T0;
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if (den == 0) {
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EIP = PARAM1;
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raise_exception(EXCP00_DIVZ);
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}
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#ifdef BUGGY_GCC_DIV64
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r = idiv64(&q, num, den);
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#else
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q = (num / den);
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r = (num % den);
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#endif
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EAX = q;
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EDX = r;
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helper_idivl_EAX_T0(PARAM1);
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}
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/* constant load & misc op */
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@ -708,21 +621,7 @@ void OPPROTO op_boundl(void)
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void OPPROTO op_cmpxchg8b(void)
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{
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uint64_t d;
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int eflags;
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eflags = cc_table[CC_OP].compute_all();
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d = ldq((uint8_t *)A0);
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if (d == (((uint64_t)EDX << 32) | EAX)) {
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stq((uint8_t *)A0, ((uint64_t)ECX << 32) | EBX);
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eflags |= CC_Z;
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} else {
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EDX = d >> 32;
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EAX = d;
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eflags &= ~CC_Z;
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}
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CC_SRC = eflags;
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FORCE_RET();
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helper_cmpxchg8b();
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}
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#if defined(__powerpc__)
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@ -937,22 +836,9 @@ void op_addw_ESP_im(void)
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ESP = (ESP & ~0xffff) | ((ESP + PARAM1) & 0xffff);
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}
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/* rdtsc */
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#ifndef __i386__
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uint64_t emu_time;
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#endif
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void OPPROTO op_rdtsc(void)
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{
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uint64_t val;
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#ifdef __i386__
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asm("rdtsc" : "=A" (val));
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#else
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/* better than nothing: the time increases */
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val = emu_time++;
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#endif
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EAX = val;
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EDX = val >> 32;
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helper_rdtsc();
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}
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void OPPROTO op_cpuid(void)
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@ -1640,7 +1526,7 @@ void OPPROTO op_fildll_ST0_A0(void)
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void OPPROTO op_fsts_ST0_A0(void)
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{
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#ifdef USE_FP_CONVERT
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FP_CONVERT.d = ST0;
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FP_CONVERT.f = (float)ST0;
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stfl((void *)A0, FP_CONVERT.f);
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#else
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stfl((void *)A0, (float)ST0);
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@ -1904,42 +1790,42 @@ void OPPROTO op_fxam_ST0(void)
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void OPPROTO op_fld1_ST0(void)
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{
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ST0 = *(CPU86_LDouble *)&f15rk[1];
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ST0 = f15rk[1];
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}
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void OPPROTO op_fldl2t_ST0(void)
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{
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ST0 = *(CPU86_LDouble *)&f15rk[6];
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ST0 = f15rk[6];
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}
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void OPPROTO op_fldl2e_ST0(void)
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{
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ST0 = *(CPU86_LDouble *)&f15rk[5];
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ST0 = f15rk[5];
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}
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void OPPROTO op_fldpi_ST0(void)
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{
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ST0 = *(CPU86_LDouble *)&f15rk[2];
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ST0 = f15rk[2];
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}
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void OPPROTO op_fldlg2_ST0(void)
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{
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ST0 = *(CPU86_LDouble *)&f15rk[3];
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ST0 = f15rk[3];
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}
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void OPPROTO op_fldln2_ST0(void)
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{
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ST0 = *(CPU86_LDouble *)&f15rk[4];
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ST0 = f15rk[4];
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}
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void OPPROTO op_fldz_ST0(void)
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{
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ST0 = *(CPU86_LDouble *)&f15rk[0];
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ST0 = f15rk[0];
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}
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void OPPROTO op_fldz_FT0(void)
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{
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ST0 = *(CPU86_LDouble *)&f15rk[0];
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ST0 = f15rk[0];
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}
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/* associated heplers to reduce generated code length and to simplify
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