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MMX/SSE support

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1205 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-01-08 18:58:29 +00:00
parent 085339a12b
commit 664e0f195a
12 changed files with 2407 additions and 176 deletions
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26
target-i386/helper.c
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@ -2444,7 +2444,7 @@ void helper_fldt_ST0_A0(void)
{
int new_fpstt;
new_fpstt = (env->fpstt - 1) & 7;
env->fpregs[new_fpstt] = helper_fldt(A0);
env->fpregs[new_fpstt].d = helper_fldt(A0);
env->fpstt = new_fpstt;
env->fptags[new_fpstt] = 0; /* validate stack entry */
}
@ -2804,9 +2804,10 @@ void helper_fstenv(target_ulong ptr, int data32)
if (env->fptags[i]) {
fptag |= 3;
} else {
tmp.d = env->fpregs[i];
tmp.d = env->fpregs[i].d;
exp = EXPD(tmp);
mant = MANTD(tmp);
printf("mant=%llx exp=%x\n", mant, exp);
if (exp == 0 && mant == 0) {
/* zero */
fptag |= 1;
@ -2930,7 +2931,7 @@ void helper_fxsave(target_ulong ptr, int data64)
if (env->cr[4] & CR4_OSFXSR_MASK) {
/* XXX: finish it */
stl(ptr + 0x18, 0); /* mxcsr */
stl(ptr + 0x18, env->mxcsr); /* mxcsr */
stl(ptr + 0x1c, 0); /* mxcsr_mask */
nb_xmm_regs = 8 << data64;
addr = ptr + 0xa0;
@ -2967,7 +2968,7 @@ void helper_fxrstor(target_ulong ptr, int data64)
if (env->cr[4] & CR4_OSFXSR_MASK) {
/* XXX: finish it, endianness */
//ldl(ptr + 0x18);
env->mxcsr = ldl(ptr + 0x18);
//ldl(ptr + 0x1c);
nb_xmm_regs = 8 << data64;
addr = ptr + 0xa0;
@ -3209,6 +3210,23 @@ void helper_idivq_EAX_T0(void)
#endif
/* XXX: do it */
int fpu_isnan(double a)
{
return 0;
}
float approx_rsqrt(float a)
{
return 1.0 / sqrt(a);
}
float approx_rcp(float a)
{
return 1.0 / a;
}
#if !defined(CONFIG_USER_ONLY)
#define MMUSUFFIX _mmu