diff options
Diffstat (limited to 'newlib')
| -rw-r--r-- | newlib/newlib/libc/machine/riscv/ieeefp.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/newlib/newlib/libc/machine/riscv/ieeefp.c b/newlib/newlib/libc/machine/riscv/ieeefp.c index ffa57a5..5bd0712 100644 --- a/newlib/newlib/libc/machine/riscv/ieeefp.c +++ b/newlib/newlib/libc/machine/riscv/ieeefp.c @@ -1,5 +1,6 @@ #include <ieeefp.h> +#ifdef __riscv_hard_float static void fssr(int value) { asm volatile ("fssr %0" :: "r"(value)); @@ -11,6 +12,7 @@ static int frsr() asm volatile ("frsr %0" : "=r"(value)); return value; } +#endif fp_except fpgetmask(void) { @@ -19,13 +21,21 @@ fp_except fpgetmask(void) fp_rnd fpgetround(void) { +#ifdef __riscv_hard_float int rm = frsr() >> 5; return rm == 0 ? FP_RN : rm == 1 ? FP_RZ : rm == 2 ? FP_RM : FP_RP; +#else + return FP_RZ; +#endif } fp_except fpgetsticky(void) { +#ifdef __riscv_hard_float return frsr() & 0x1f; +#else + return 0; +#endif } fp_except fpsetmask(fp_except mask) @@ -35,16 +45,24 @@ fp_except fpsetmask(fp_except mask) fp_rnd fpsetround(fp_rnd rnd_dir) { +#ifdef __riscv_hard_float int fsr = frsr(); int rm = fsr >> 5; int new_rm = rnd_dir == FP_RN ? 0 : rnd_dir == FP_RZ ? 1 : rnd_dir == FP_RM ? 2 : 3; fssr(new_rm << 5 | fsr & 0x1f); return rm == 0 ? FP_RN : rm == 1 ? FP_RZ : rm == 2 ? FP_RM : FP_RP; +#else + return -1; +#endif } fp_except fpsetsticky(fp_except sticky) { +#ifdef __riscv_hard_float int fsr = frsr(); fssr(sticky & 0x1f | fsr & ~0x1f); return fsr & 0x1f; +#else + return -1; +#endif } |