diff options
Diffstat (limited to 'target/openrisc/fpu_helper.c')
| -rw-r--r-- | target/openrisc/fpu_helper.c | 49 |
1 files changed, 46 insertions, 3 deletions
diff --git a/target/openrisc/fpu_helper.c b/target/openrisc/fpu_helper.c index b9d2ebbb8c..59e1413279 100644 --- a/target/openrisc/fpu_helper.c +++ b/target/openrisc/fpu_helper.c @@ -61,9 +61,22 @@ void HELPER(update_fpcsr)(CPUOpenRISCState *env) } } +void cpu_set_fpcsr(CPUOpenRISCState *env, uint32_t val) +{ + static const int rm_to_sf[] = { + float_round_nearest_even, + float_round_to_zero, + float_round_up, + float_round_down + }; + + env->fpcsr = val & 0x7ff; + set_float_rounding_mode(rm_to_sf[extract32(val, 1, 2)], &env->fp_status); +} + uint64_t HELPER(itofd)(CPUOpenRISCState *env, uint64_t val) { - return int32_to_float64(val, &env->fp_status); + return int64_to_float64(val, &env->fp_status); } uint32_t HELPER(itofs)(CPUOpenRISCState *env, uint32_t val) @@ -73,12 +86,22 @@ uint32_t HELPER(itofs)(CPUOpenRISCState *env, uint32_t val) uint64_t HELPER(ftoid)(CPUOpenRISCState *env, uint64_t val) { - return float32_to_int64(val, &env->fp_status); + return float64_to_int64_round_to_zero(val, &env->fp_status); } uint32_t HELPER(ftois)(CPUOpenRISCState *env, uint32_t val) { - return float32_to_int32(val, &env->fp_status); + return float32_to_int32_round_to_zero(val, &env->fp_status); +} + +uint64_t HELPER(stod)(CPUOpenRISCState *env, uint32_t val) +{ + return float32_to_float64(val, &env->fp_status); +} + +uint32_t HELPER(dtos)(CPUOpenRISCState *env, uint64_t val) +{ + return float64_to_float32(val, &env->fp_status); } #define FLOAT_CALC(name) \ @@ -125,4 +148,24 @@ target_ulong helper_float_ ## name ## _s(CPUOpenRISCState *env, \ FLOAT_CMP(le, le) FLOAT_CMP(lt, lt) FLOAT_CMP(eq, eq_quiet) +FLOAT_CMP(un, unordered_quiet) #undef FLOAT_CMP + +#define FLOAT_UCMP(name, expr) \ +target_ulong helper_float_ ## name ## _d(CPUOpenRISCState *env, \ + uint64_t fdt0, uint64_t fdt1) \ +{ \ + int r = float64_compare_quiet(fdt0, fdt1, &env->fp_status); \ + return expr; \ +} \ +target_ulong helper_float_ ## name ## _s(CPUOpenRISCState *env, \ + uint32_t fdt0, uint32_t fdt1) \ +{ \ + int r = float32_compare_quiet(fdt0, fdt1, &env->fp_status); \ + return expr; \ +} + +FLOAT_UCMP(ueq, r == float_relation_equal || r == float_relation_unordered) +FLOAT_UCMP(ult, r == float_relation_less || r == float_relation_unordered) +FLOAT_UCMP(ule, r != float_relation_greater) +#undef FLOAT_UCMP |