diff options
| author | Ian Moffett <ian@osmora.org> | 2024-03-07 17:28:00 -0500 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2024-03-07 17:28:32 -0500 |
| commit | bd5969fc876a10b18613302db7087ef3c40f18e1 (patch) | |
| tree | 7c2b8619afe902abf99570df2873fbdf40a4d1a1 /lib/mlibc/options/internal/riscv64/fenv.S | |
| parent | a95b38b1b92b172e6cc4e8e56a88a30cc65907b0 (diff) | |
lib: Add mlibc
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'lib/mlibc/options/internal/riscv64/fenv.S')
| -rw-r--r-- | lib/mlibc/options/internal/riscv64/fenv.S | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/lib/mlibc/options/internal/riscv64/fenv.S b/lib/mlibc/options/internal/riscv64/fenv.S new file mode 100644 index 0000000..c62ea36 --- /dev/null +++ b/lib/mlibc/options/internal/riscv64/fenv.S @@ -0,0 +1,57 @@ + +#ifdef __riscv_flen + +.global feclearexcept +.type feclearexcept, %function +feclearexcept: + csrc fflags, a0 + li a0, 0 + ret + +.global feraiseexcept +.type feraiseexcept, %function +feraiseexcept: + csrs fflags, a0 + li a0, 0 + ret + +.global fetestexcept +.type fetestexcept, %function +fetestexcept: + frflags t0 + and a0, t0, a0 + ret + +.global fegetround +.type fegetround, %function +fegetround: + frrm a0 + ret + +.global __fesetround +.type __fesetround, %function +__fesetround: + fsrm t0, a0 + li a0, 0 + ret + +.global fegetenv +.type fegetenv, %function +fegetenv: + frcsr t0 + sw t0, 0(a0) + li a0, 0 + ret + +.global fesetenv +.type fesetenv, %function +fesetenv: + li t2, -1 + li t1, 0 + beq a0, t2, 1f + lw t1, 0(a0) +1: fscsr t1 + li a0, 0 + ret + +#endif
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