diff options
Diffstat (limited to 'tests/tcg/i386/test-i386-fxam.c')
-rw-r--r-- | tests/tcg/i386/test-i386-fxam.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/tests/tcg/i386/test-i386-fxam.c b/tests/tcg/i386/test-i386-fxam.c new file mode 100644 index 0000000..ddd76ca --- /dev/null +++ b/tests/tcg/i386/test-i386-fxam.c @@ -0,0 +1,143 @@ +/* Test fxam instruction. */ + +#include <stdint.h> +#include <stdio.h> + +union u { + struct { uint64_t sig; uint16_t sign_exp; } s; + long double ld; +}; + +volatile union u ld_pseudo_m16382 = { .s = { UINT64_C(1) << 63, 0 } }; +volatile union u ld_pseudo_nm16382 = { .s = { UINT64_C(1) << 63, 0x8000 } }; +volatile union u ld_invalid_1 = { .s = { 1, 1234 } }; +volatile union u ld_invalid_2 = { .s = { 0, 1234 } }; +volatile union u ld_invalid_3 = { .s = { 0, 0x7fff } }; +volatile union u ld_invalid_4 = { .s = { (UINT64_C(1) << 63) - 1, 0x7fff } }; +volatile union u ld_invalid_n1 = { .s = { 1, 0x8123 } }; +volatile union u ld_invalid_n2 = { .s = { 0, 0x8123 } }; +volatile union u ld_invalid_n3 = { .s = { 0, 0xffff } }; +volatile union u ld_invalid_n4 = { .s = { (UINT64_C(1) << 63) - 1, 0xffff } }; + +#define C0 (1 << 8) +#define C1 (1 << 9) +#define C2 (1 << 10) +#define C3 (1 << 14) +#define FLAGS (C0 | C1 | C2 | C3) + +int main(void) +{ + short sw; + int ret = 0; + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (0.0L)); + if ((sw & FLAGS) != C3) { + printf("FAIL: +0\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (-0.0L)); + if ((sw & FLAGS) != (C3 | C1)) { + printf("FAIL: -0\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (1.0L)); + if ((sw & FLAGS) != C2) { + printf("FAIL: +normal\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (-1.0L)); + if ((sw & FLAGS) != (C2 | C1)) { + printf("FAIL: -normal\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (__builtin_infl())); + if ((sw & FLAGS) != (C2 | C0)) { + printf("FAIL: +inf\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (-__builtin_infl())); + if ((sw & FLAGS) != (C2 | C1 | C0)) { + printf("FAIL: -inf\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (__builtin_nanl(""))); + if ((sw & FLAGS) != C0) { + printf("FAIL: +nan\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (-__builtin_nanl(""))); + if ((sw & FLAGS) != (C1 | C0)) { + printf("FAIL: -nan\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (__builtin_nansl(""))); + if ((sw & FLAGS) != C0) { + printf("FAIL: +snan\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (-__builtin_nansl(""))); + if ((sw & FLAGS) != (C1 | C0)) { + printf("FAIL: -snan\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (0x1p-16445L)); + if ((sw & FLAGS) != (C3 | C2)) { + printf("FAIL: +denormal\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (-0x1p-16445L)); + if ((sw & FLAGS) != (C3 | C2 | C1)) { + printf("FAIL: -denormal\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (ld_pseudo_m16382.ld)); + if ((sw & FLAGS) != (C3 | C2)) { + printf("FAIL: +pseudo-denormal\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (ld_pseudo_nm16382.ld)); + if ((sw & FLAGS) != (C3 | C2 | C1)) { + printf("FAIL: -pseudo-denormal\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (ld_invalid_1.ld)); + if ((sw & FLAGS) != 0) { + printf("FAIL: +invalid 1\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (ld_invalid_n1.ld)); + if ((sw & FLAGS) != C1) { + printf("FAIL: -invalid 1\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (ld_invalid_2.ld)); + if ((sw & FLAGS) != 0) { + printf("FAIL: +invalid 2\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (ld_invalid_n2.ld)); + if ((sw & FLAGS) != C1) { + printf("FAIL: -invalid 2\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (ld_invalid_3.ld)); + if ((sw & FLAGS) != 0) { + printf("FAIL: +invalid 3\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (ld_invalid_n3.ld)); + if ((sw & FLAGS) != C1) { + printf("FAIL: -invalid 3\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (ld_invalid_4.ld)); + if ((sw & FLAGS) != 0) { + printf("FAIL: +invalid 4\n"); + ret = 1; + } + __asm__ volatile ("fxam\nfnstsw" : "=a" (sw) : "t" (ld_invalid_n4.ld)); + if ((sw & FLAGS) != C1) { + printf("FAIL: -invalid 4\n"); + ret = 1; + } + return ret; +} |