diff options
Diffstat (limited to 'tests/test-i386.c')
| -rw-r--r-- | tests/test-i386.c | 65 |
1 files changed, 64 insertions, 1 deletions
diff --git a/tests/test-i386.c b/tests/test-i386.c index 39c7a55a74..56dc6af937 100644 --- a/tests/test-i386.c +++ b/tests/test-i386.c @@ -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(); } /**********************************************/ |