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author | Rich Felker <dalias@aerifal.cx> | 2018-06-14 14:26:30 -0400 |
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committer | Rich Felker <dalias@aerifal.cx> | 2018-06-19 13:24:05 -0400 |
commit | f81e44a0d96c88e052e51982f9fdd6fe0a212b46 (patch) | |
tree | e8a21317b5af5a2d09543ffcb0fbf1f0a668b63a /arch/m68k/bits/fenv.h | |
parent | 18f02c42a2b5397e8541f4663eb6ca00c1a806dd (diff) | |
download | musl-f81e44a0d96c88e052e51982f9fdd6fe0a212b46.tar.gz |
add m68k port
three ABIs are supported: the default with 68881 80-bit fpu format and
results returned in floating point registers, softfloat-only with the
same format, and coldfire fpu with IEEE single/double only. only the
first is tested at all, and only under qemu which has fpu emulation
bugs.
basic functionality smoke tests have been performed for the most
common arch-specific breakage via libc-test and qemu user-level
emulation. some sysvipc failures remain, but are shared with other big
endian archs and will be fixed separately.
Diffstat (limited to 'arch/m68k/bits/fenv.h')
-rw-r--r-- | arch/m68k/bits/fenv.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/m68k/bits/fenv.h b/arch/m68k/bits/fenv.h new file mode 100644 index 00000000..c90a4a58 --- /dev/null +++ b/arch/m68k/bits/fenv.h @@ -0,0 +1,29 @@ +#if __HAVE_68881__ || __mcffpu__ + +#define FE_INEXACT 8 +#define FE_DIVBYZERO 16 +#define FE_UNDERFLOW 32 +#define FE_OVERFLOW 64 +#define FE_INVALID 128 + +#define FE_ALL_EXCEPT 0xf8 + +#define FE_TONEAREST 0 +#define FE_TOWARDZERO 16 +#define FE_DOWNWARD 32 +#define FE_UPWARD 48 + +#else + +#define FE_ALL_EXCEPT 0 +#define FE_TONEAREST 0 + +#endif + +typedef unsigned fexcept_t; + +typedef struct { + unsigned __control_register, __status_register, __instruction_address; +} fenv_t; + +#define FE_DFL_ENV ((const fenv_t *) -1) |