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more FPU tests

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@202 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-05-29 20:06:57 +00:00
parent ed2dcdf68e
commit 03bfca946a
1 changed files with 64 additions and 1 deletions
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65
tests/test-i386.c
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@ -9,7 +9,8 @@
#include <sys/mman.h>
#include <asm/vm86.h>
#define TEST_CMOV 0
#define TEST_CMOV 0
#define TEST_FCOMI 0
#define xglue(x, y) x ## y
#define glue(x, y) xglue(x, y)
@ -510,6 +511,16 @@ void test_fcmp(double a, double b)
a, b, a > b);
printf("(%f<=%f)=%d\n",
a, b, a >= b);
if (TEST_FCOMI) {
unsigned int eflags;
/* test f(u)comi instruction */
asm("fcomi %2, %1\n"
"pushf\n"
"pop %0\n"
: "=r" (eflags)
: "t" (a), "u" (b));
printf("fcomi(%f %f)=%08x\n", a, b, eflags & (CC_Z | CC_P | CC_C));
}
}
void test_fcvt(double a)
@ -556,6 +567,57 @@ void test_fbcd(double a)
a, bcd[4], bcd[3], bcd[2], bcd[1], bcd[0], b);
}
#define TEST_ENV(env, prefix)\
{\
memset((env), 0xaa, sizeof(*(env)));\
asm("fld1\n"\
prefix "fnstenv %1\n"\
prefix "fldenv %1\n"\
: "=t" (res) : "m" (*(env)) : "st");\
printf("res=%f\n", res);\
printf("fpuc=%04x fpus=%04x fptag=%04x\n",\
(env)->fpuc,\
(env)->fpus & 0xff00,\
(env)->fptag);\
memset((env), 0xaa, sizeof(*(env)));\
asm("fld1\n"\
prefix "fnsave %1\n"\
prefix "frstor %1\n"\
: "=t" (res) : "m" (*(env)) : "st");\
printf("res=%f\n", res);\
printf("fpuc=%04x fpus=%04x fptag=%04x\n",\
(env)->fpuc,\
(env)->fpus & 0xff00,\
(env)->fptag);\
printf("ST(0) = %Lf\n",\
(env)->fpregs[0]);\
}
void test_fenv(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;
struct __attribute__((packed)) {
uint16_t fpuc;
uint16_t fpus;
uint16_t fptag;
uint16_t ignored[4];
long double fpregs[8];
} float_env16;
double res;
TEST_ENV(&float_env16, "data16 ");
TEST_ENV(&float_env32, "");
}
void test_floats(void)
{
test_fops(2, 3);
@ -569,6 +631,7 @@ void test_floats(void)
test_fconst();
test_fbcd(1234567890123456);
test_fbcd(-123451234567890);
test_fenv();
}
/**********************************************/