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NaN tests 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1342 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-03-20 10:40:15 +00:00
parent 8422b11337
commit 86bd2ca58a
1 changed files with 123 additions and 57 deletions
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94
tests/test-i386.c
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@ -40,6 +40,7 @@
#define TEST_CMOV 1
#define TEST_FCOMI 1
#else
//#define TEST_SSE
#define TEST_CMOV 0
#define TEST_FCOMI 0
#endif
@ -697,6 +698,14 @@ void test_bsx(void)
/**********************************************/
union float64u {
double d;
uint64_t l;
};
union float64u q_nan = { .l = 0xFFF8000000000000 };
union float64u s_nan = { .l = 0xFFF0000000000000 };
void test_fops(double a, double b)
{
printf("a=%f b=%f a+b=%f\n", a, b, a + b);
@ -718,28 +727,68 @@ void test_fops(double a, double b)
}
void fpu_clear_exceptions(void)
{
struct __attribute__((packed)) {
uint16_t fpuc;
uint16_t dummy1;
uint16_t fpus;
uint16_t dummy2;
uint16_t fptag;
uint16_t dummy3;
uint32_t ignored[4];
long double fpregs[8];
} float_env32;
asm volatile ("fnstenv %0\n" : : "m" (float_env32));
float_env32.fpus &= ~0x7f;
asm volatile ("fldenv %0\n" : : "m" (float_env32));
}
/* XXX: display exception bits when supported */
#define FPUS_EMASK 0x0000
//#define FPUS_EMASK 0x007f
void test_fcmp(double a, double b)
{
printf("(%f<%f)=%d\n",
a, b, a < b);
printf("(%f<=%f)=%d\n",
a, b, a <= b);
printf("(%f==%f)=%d\n",
a, b, a == b);
printf("(%f>%f)=%d\n",
a, b, a > b);
printf("(%f<=%f)=%d\n",
a, b, a >= b);
long eflags, fpus;
fpu_clear_exceptions();
asm("fcom %2\n"
"fstsw %%ax\n"
: "=a" (fpus)
: "t" (a), "u" (b));
printf("fcom(%f %f)=%04lx \n",
a, b, fpus & (0x4500 | FPUS_EMASK));
fpu_clear_exceptions();
asm("fucom %2\n"
"fstsw %%ax\n"
: "=a" (fpus)
: "t" (a), "u" (b));
printf("fucom(%f %f)=%04lx\n",
a, b, fpus & (0x4500 | FPUS_EMASK));
if (TEST_FCOMI) {
long eflags;
/* test f(u)comi instruction */
asm("fcomi %2, %1\n"
fpu_clear_exceptions();
asm("fcomi %3, %2\n"
"fstsw %%ax\n"
"pushf\n"
"pop %0\n"
: "=r" (eflags)
: "=r" (eflags), "=a" (fpus)
: "t" (a), "u" (b));
printf("fcomi(%f %f)=%08lx\n", a, b, eflags & (CC_Z | CC_P | CC_C));
printf("fcomi(%f %f)=%04lx %02lx\n",
a, b, fpus & FPUS_EMASK, eflags & (CC_Z | CC_P | CC_C));
fpu_clear_exceptions();
asm("fucomi %3, %2\n"
"fstsw %%ax\n"
"pushf\n"
"pop %0\n"
: "=r" (eflags), "=a" (fpus)
: "t" (a), "u" (b));
printf("fucomi(%f %f)=%04lx %02lx\n",
a, b, fpus & FPUS_EMASK, eflags & (CC_Z | CC_P | CC_C));
}
fpu_clear_exceptions();
}
void test_fcvt(double a)
@ -907,6 +956,8 @@ void test_floats(void)
test_fcmp(2, -1);
test_fcmp(2, 2);
test_fcmp(2, 3);
test_fcmp(2, q_nan.d);
test_fcmp(q_nan.d, -1);
test_fcvt(0.5);
test_fcvt(-0.5);
test_fcvt(1.0/7.0);
@ -2191,6 +2242,7 @@ void test_fxsave(void)
void test_sse(void)
{
XMMReg r, a, b;
int i;
MMX_OP2(punpcklbw);
MMX_OP2(punpcklwd);
@ -2354,7 +2406,10 @@ void test_sse(void)
test_sse_comi(2, -1);
test_sse_comi(2, 2);
test_sse_comi(2, 3);
test_sse_comi(2, q_nan.d);
test_sse_comi(q_nan.d, -1);
for(i = 0; i < 2; i++) {
a.s[0] = 2.7;
a.s[1] = 3.4;
a.s[2] = 4;
@ -2363,6 +2418,11 @@ void test_sse(void)
b.s[1] = 353.4;
b.s[2] = 4;
b.s[3] = 56.3;
if (i == 1) {
a.s[0] = q_nan.d;
b.s[3] = q_nan.d;
}
SSE_OPS(add);
SSE_OPS(mul);
SSE_OPS(sub);
@ -2379,10 +2439,15 @@ void test_sse(void)
SSE_OPS(cmpnle);
SSE_OPS(cmpord);
a.d[0] = 2.7;
a.d[1] = -3.4;
b.d[0] = 45.7;
b.d[1] = -53.4;
if (i == 1) {
a.d[0] = q_nan.d;
b.d[1] = q_nan.d;
}
SSE_OPD(add);
SSE_OPD(mul);
SSE_OPD(sub);
@ -2398,6 +2463,7 @@ void test_sse(void)
SSE_OPD(cmpnlt);
SSE_OPD(cmpnle);
SSE_OPD(cmpord);
}
/* float to float/int */
a.s[0] = 2.7;