diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/tcg/m68k/Makefile.target | 2 | ||||
| -rw-r--r-- | tests/tcg/m68k/denormal.c | 53 |
2 files changed, 54 insertions, 1 deletions
diff --git a/tests/tcg/m68k/Makefile.target b/tests/tcg/m68k/Makefile.target index 1163c7ef03..6ff214e60a 100644 --- a/tests/tcg/m68k/Makefile.target +++ b/tests/tcg/m68k/Makefile.target @@ -4,7 +4,7 @@ # VPATH += $(SRC_PATH)/tests/tcg/m68k -TESTS += trap +TESTS += trap denormal # On m68k Linux supports 4k and 8k pages (but 8k is currently broken) EXTRA_RUNS+=run-test-mmap-4096 # run-test-mmap-8192 diff --git a/tests/tcg/m68k/denormal.c b/tests/tcg/m68k/denormal.c new file mode 100644 index 0000000000..20bd8c7332 --- /dev/null +++ b/tests/tcg/m68k/denormal.c @@ -0,0 +1,53 @@ +/* + * Test m68k extended double denormals. + */ + +#include <stdio.h> +#include <stdint.h> + +#define TEST(X, Y) { X, Y, X * Y } + +static volatile long double test[][3] = { + TEST(0x1p+16383l, 0x1p-16446l), + TEST(0x1.1p-8223l, 0x1.1p-8224l), + TEST(1.0l, 0x1p-16383l), +}; + +#undef TEST + +static void dump_ld(const char *label, long double ld) +{ + union { + long double d; + struct { + uint32_t exp:16; + uint32_t space:16; + uint32_t h; + uint32_t l; + }; + } u; + + u.d = ld; + printf("%12s: % -27La 0x%04x 0x%08x 0x%08x\n", label, u.d, u.exp, u.h, u.l); +} + +int main(void) +{ + int i, n = sizeof(test) / sizeof(test[0]), err = 0; + + for (i = 0; i < n; ++i) { + long double x = test[i][0]; + long double y = test[i][1]; + long double build_mul = test[i][2]; + long double runtime_mul = x * y; + + if (runtime_mul != build_mul) { + dump_ld("x", x); + dump_ld("y", y); + dump_ld("build_mul", build_mul); + dump_ld("runtime_mul", runtime_mul); + err = 1; + } + } + return err; +} |