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| author | Richard Henderson <rth@twiddle.net> | 2012-08-23 12:30:12 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2013-01-05 12:18:41 -0800 |
| commit | 722bfec331504bf873a5e4ec4f232c4ed116dda2 (patch) | |
| tree | 79494a0dcd62f09ae4bd37ca4b3b60c1b48cc3de /target-s390x/fpu_helper.c | |
| parent | 83b00736f3d8033861c27b80c9d3fc7c44bbec99 (diff) | |
| download | qemu-722bfec331504bf873a5e4ec4f232c4ed116dda2.tar.gz | |
target-s390: Convert MULTIPLY AND ADD, SUBTRACT
Use the new float*_muladd interface to softfloat.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-s390x/fpu_helper.c')
| -rw-r--r-- | target-s390x/fpu_helper.c | 57 |
1 files changed, 26 insertions, 31 deletions
diff --git a/target-s390x/fpu_helper.c b/target-s390x/fpu_helper.c index 9805026c6a..8f2c504beb 100644 --- a/target-s390x/fpu_helper.c +++ b/target-s390x/fpu_helper.c @@ -581,47 +581,42 @@ void HELPER(lzxr)(CPUS390XState *env, uint32_t f1) env->fregs[f1 + 1].ll = x.ll.lower; } -/* 64-bit FP multiply and add RM */ -void HELPER(madb)(CPUS390XState *env, uint32_t f1, uint64_t a2, uint32_t f3) +/* 32-bit FP multiply and add */ +uint64_t HELPER(maeb)(CPUS390XState *env, uint64_t f1, + uint64_t f2, uint64_t f3) { - CPU_DoubleU v2; - - HELPER_LOG("%s: f1 %d a2 0x%lx f3 %d\n", __func__, f1, a2, f3); - v2.ll = cpu_ldq_data(env, a2); - env->fregs[f1].d = float64_add(env->fregs[f1].d, - float64_mul(v2.d, env->fregs[f3].d, - &env->fpu_status), - &env->fpu_status); + float32 ret = float32_muladd(f2, f3, f1, 0, &env->fpu_status); + handle_exceptions(env, GETPC()); + return ret; } -/* 64-bit FP multiply and add RR */ -void HELPER(madbr)(CPUS390XState *env, uint32_t f1, uint32_t f3, uint32_t f2) +/* 64-bit FP multiply and add */ +uint64_t HELPER(madb)(CPUS390XState *env, uint64_t f1, + uint64_t f2, uint64_t f3) { - HELPER_LOG("%s: f1 %d f2 %d f3 %d\n", __func__, f1, f2, f3); - env->fregs[f1].d = float64_add(float64_mul(env->fregs[f2].d, - env->fregs[f3].d, - &env->fpu_status), - env->fregs[f1].d, &env->fpu_status); + float64 ret = float64_muladd(f2, f3, f1, 0, &env->fpu_status); + handle_exceptions(env, GETPC()); + return ret; } -/* 64-bit FP multiply and subtract RR */ -void HELPER(msdbr)(CPUS390XState *env, uint32_t f1, uint32_t f3, uint32_t f2) +/* 32-bit FP multiply and subtract */ +uint64_t HELPER(mseb)(CPUS390XState *env, uint64_t f1, + uint64_t f2, uint64_t f3) { - HELPER_LOG("%s: f1 %d f2 %d f3 %d\n", __func__, f1, f2, f3); - env->fregs[f1].d = float64_sub(float64_mul(env->fregs[f2].d, - env->fregs[f3].d, - &env->fpu_status), - env->fregs[f1].d, &env->fpu_status); + float32 ret = float32_muladd(f2, f3, f1, float_muladd_negate_c, + &env->fpu_status); + handle_exceptions(env, GETPC()); + return ret; } -/* 32-bit FP multiply and add RR */ -void HELPER(maebr)(CPUS390XState *env, uint32_t f1, uint32_t f3, uint32_t f2) +/* 64-bit FP multiply and subtract */ +uint64_t HELPER(msdb)(CPUS390XState *env, uint64_t f1, + uint64_t f2, uint64_t f3) { - env->fregs[f1].l.upper = float32_add(env->fregs[f1].l.upper, - float32_mul(env->fregs[f2].l.upper, - env->fregs[f3].l.upper, - &env->fpu_status), - &env->fpu_status); + float64 ret = float64_muladd(f2, f3, f1, float_muladd_negate_c, + &env->fpu_status); + handle_exceptions(env, GETPC()); + return ret; } /* test data class 32-bit */ |