diff options
| author | Aurelien Jarno <aurelien@aurel32.net> | 2012-10-09 21:53:20 +0200 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2012-10-31 22:20:45 +0100 |
| commit | b3d6cd447d594217cbfd09a3ffdf7b7893a1aa92 (patch) | |
| tree | 7790358bb1de1f0bd0b5845fd316133519574c82 /target-mips/op_helper.c | |
| parent | bbc1dedef6530917e34a94a2641932e636f9b02d (diff) | |
| download | qemu-b3d6cd447d594217cbfd09a3ffdf7b7893a1aa92.tar.gz | |
target-mips: use the softfloat floatXX_muladd functions
Use the new softfloat floatXX_muladd() functions to implement the madd,
msub, nmadd and nmsub instructions. At the same time replace the name of
the helpers by the name of the instruction, as the only reason for the
previous names was to keep the macros simple.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-mips/op_helper.c')
| -rw-r--r-- | target-mips/op_helper.c | 137 |
1 files changed, 48 insertions, 89 deletions
diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c index d50334f45f..1abed8e3da 100644 --- a/target-mips/op_helper.c +++ b/target-mips/op_helper.c @@ -3031,95 +3031,54 @@ FLOAT_BINOP(mul) FLOAT_BINOP(div) #undef FLOAT_BINOP -/* ternary operations */ -#define FLOAT_TERNOP(name1, name2) \ -uint64_t helper_float_ ## name1 ## name2 ## _d(CPUMIPSState *env, \ - uint64_t fdt0, \ - uint64_t fdt1, \ - uint64_t fdt2) \ -{ \ - fdt0 = float64_ ## name1 (fdt0, fdt1, &env->active_fpu.fp_status); \ - return float64_ ## name2 (fdt0, fdt2, &env->active_fpu.fp_status); \ -} \ - \ -uint32_t helper_float_ ## name1 ## name2 ## _s(CPUMIPSState *env, \ - uint32_t fst0, \ - uint32_t fst1, \ - uint32_t fst2) \ -{ \ - fst0 = float32_ ## name1 (fst0, fst1, &env->active_fpu.fp_status); \ - return float32_ ## name2 (fst0, fst2, &env->active_fpu.fp_status); \ -} \ - \ -uint64_t helper_float_ ## name1 ## name2 ## _ps(CPUMIPSState *env, \ - uint64_t fdt0, \ - uint64_t fdt1, \ - uint64_t fdt2) \ -{ \ - uint32_t fst0 = fdt0 & 0XFFFFFFFF; \ - uint32_t fsth0 = fdt0 >> 32; \ - uint32_t fst1 = fdt1 & 0XFFFFFFFF; \ - uint32_t fsth1 = fdt1 >> 32; \ - uint32_t fst2 = fdt2 & 0XFFFFFFFF; \ - uint32_t fsth2 = fdt2 >> 32; \ - \ - fst0 = float32_ ## name1 (fst0, fst1, &env->active_fpu.fp_status); \ - fsth0 = float32_ ## name1 (fsth0, fsth1, &env->active_fpu.fp_status); \ - fst2 = float32_ ## name2 (fst0, fst2, &env->active_fpu.fp_status); \ - fsth2 = float32_ ## name2 (fsth0, fsth2, &env->active_fpu.fp_status); \ - return ((uint64_t)fsth2 << 32) | fst2; \ -} - -FLOAT_TERNOP(mul, add) -FLOAT_TERNOP(mul, sub) -#undef FLOAT_TERNOP - -/* negated ternary operations */ -#define FLOAT_NTERNOP(name1, name2) \ -uint64_t helper_float_n ## name1 ## name2 ## _d(CPUMIPSState *env, \ - uint64_t fdt0, \ - uint64_t fdt1, \ - uint64_t fdt2) \ -{ \ - fdt0 = float64_ ## name1 (fdt0, fdt1, &env->active_fpu.fp_status); \ - fdt2 = float64_ ## name2 (fdt0, fdt2, &env->active_fpu.fp_status); \ - return float64_chs(fdt2); \ -} \ - \ -uint32_t helper_float_n ## name1 ## name2 ## _s(CPUMIPSState *env, \ - uint32_t fst0, \ - uint32_t fst1, \ - uint32_t fst2) \ -{ \ - fst0 = float32_ ## name1 (fst0, fst1, &env->active_fpu.fp_status); \ - fst2 = float32_ ## name2 (fst0, fst2, &env->active_fpu.fp_status); \ - return float32_chs(fst2); \ -} \ - \ -uint64_t helper_float_n ## name1 ## name2 ## _ps(CPUMIPSState *env, \ - uint64_t fdt0, \ - uint64_t fdt1, \ - uint64_t fdt2) \ -{ \ - uint32_t fst0 = fdt0 & 0XFFFFFFFF; \ - uint32_t fsth0 = fdt0 >> 32; \ - uint32_t fst1 = fdt1 & 0XFFFFFFFF; \ - uint32_t fsth1 = fdt1 >> 32; \ - uint32_t fst2 = fdt2 & 0XFFFFFFFF; \ - uint32_t fsth2 = fdt2 >> 32; \ - \ - fst0 = float32_ ## name1 (fst0, fst1, &env->active_fpu.fp_status); \ - fsth0 = float32_ ## name1 (fsth0, fsth1, &env->active_fpu.fp_status); \ - fst2 = float32_ ## name2 (fst0, fst2, &env->active_fpu.fp_status); \ - fsth2 = float32_ ## name2 (fsth0, fsth2, &env->active_fpu.fp_status); \ - fst2 = float32_chs(fst2); \ - fsth2 = float32_chs(fsth2); \ - return ((uint64_t)fsth2 << 32) | fst2; \ -} - -FLOAT_NTERNOP(mul, add) -FLOAT_NTERNOP(mul, sub) -#undef FLOAT_NTERNOP +/* FMA based operations */ +#define FLOAT_FMA(name, type) \ +uint64_t helper_float_ ## name ## _d(CPUMIPSState *env, \ + uint64_t fdt0, uint64_t fdt1, \ + uint64_t fdt2) \ +{ \ + set_float_exception_flags(0, &env->active_fpu.fp_status); \ + fdt0 = float64_muladd(fdt0, fdt1, fdt2, type, \ + &env->active_fpu.fp_status); \ + update_fcr31(env); \ + return fdt0; \ +} \ + \ +uint32_t helper_float_ ## name ## _s(CPUMIPSState *env, \ + uint32_t fst0, uint32_t fst1, \ + uint32_t fst2) \ +{ \ + set_float_exception_flags(0, &env->active_fpu.fp_status); \ + fst0 = float32_muladd(fst0, fst1, fst2, type, \ + &env->active_fpu.fp_status); \ + update_fcr31(env); \ + return fst0; \ +} \ + \ +uint64_t helper_float_ ## name ## _ps(CPUMIPSState *env, \ + uint64_t fdt0, uint64_t fdt1, \ + uint64_t fdt2) \ +{ \ + uint32_t fst0 = fdt0 & 0XFFFFFFFF; \ + uint32_t fsth0 = fdt0 >> 32; \ + uint32_t fst1 = fdt1 & 0XFFFFFFFF; \ + uint32_t fsth1 = fdt1 >> 32; \ + uint32_t fst2 = fdt2 & 0XFFFFFFFF; \ + uint32_t fsth2 = fdt2 >> 32; \ + \ + set_float_exception_flags(0, &env->active_fpu.fp_status); \ + fst0 = float32_muladd(fst0, fst1, fst2, type, \ + &env->active_fpu.fp_status); \ + fsth0 = float32_muladd(fsth0, fsth1, fsth2, type, \ + &env->active_fpu.fp_status); \ + update_fcr31(env); \ + return ((uint64_t)fsth0 << 32) | fst0; \ +} +FLOAT_FMA(madd, 0) +FLOAT_FMA(msub, float_muladd_negate_c) +FLOAT_FMA(nmadd, float_muladd_negate_result) +FLOAT_FMA(nmsub, float_muladd_negate_result | float_muladd_negate_c) +#undef FLOAT_FMA /* MIPS specific binary operations */ uint64_t helper_float_recip2_d(CPUMIPSState *env, uint64_t fdt0, uint64_t fdt2) |