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target-s390: Convert FP SUBTRACT

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Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2012-08-23 11:05:03 -07:00
parent 587626f8da
commit 1a800a2dce
4 changed files with 47 additions and 91 deletions
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74
target-s390x/fpu_helper.c
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@ -212,27 +212,31 @@ uint64_t HELPER(axb)(CPUS390XState *env, uint64_t ah, uint64_t al,
return RET128(ret);
}
/* 32-bit FP subtraction RR */
uint32_t HELPER(sebr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
/* 32-bit FP subtraction */
uint64_t HELPER(seb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
{
env->fregs[f1].l.upper = float32_sub(env->fregs[f1].l.upper,
env->fregs[f2].l.upper,
&env->fpu_status);
HELPER_LOG("%s: adding 0x%d resulting in 0x%d in f%d\n", __func__,
env->fregs[f2].l.upper, env->fregs[f1].l.upper, f1);
return set_cc_nz_f32(env->fregs[f1].l.upper);
float32 ret = float32_sub(f1, f2, &env->fpu_status);
handle_exceptions(env, GETPC());
return ret;
}
/* 64-bit FP subtraction RR */
uint32_t HELPER(sdbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
/* 64-bit FP subtraction */
uint64_t HELPER(sdb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
{
env->fregs[f1].d = float64_sub(env->fregs[f1].d, env->fregs[f2].d,
&env->fpu_status);
HELPER_LOG("%s: subtracting 0x%ld resulting in 0x%ld in f%d\n",
__func__, env->fregs[f2].d, env->fregs[f1].d, f1);
float64 ret = float64_sub(f1, f2, &env->fpu_status);
handle_exceptions(env, GETPC());
return ret;
}
return set_cc_nz_f64(env->fregs[f1].d);
/* 128-bit FP subtraction */
uint64_t HELPER(sxb)(CPUS390XState *env, uint64_t ah, uint64_t al,
uint64_t bh, uint64_t bl)
{
float128 ret = float128_sub(make_float128(ah, al),
make_float128(bh, bl),
&env->fpu_status);
handle_exceptions(env, GETPC());
return RET128(ret);
}
/* 32-bit FP division RR */
@ -446,27 +450,6 @@ uint32_t HELPER(cxb)(CPUS390XState *env, uint64_t ah, uint64_t al,
return float_comp_to_cc(env, cmp);
}
/* 32-bit FP subtraction RM */
void HELPER(seb)(CPUS390XState *env, uint32_t f1, uint32_t val)
{
float32 v1 = env->fregs[f1].l.upper;
CPU_FloatU v2;
v2.l = val;
env->fregs[f1].l.upper = float32_sub(v1, v2.f, &env->fpu_status);
}
/* 64-bit FP subtraction RM */
uint32_t HELPER(sdb)(CPUS390XState *env, uint32_t f1, uint64_t a2)
{
float64 v1 = env->fregs[f1].d;
CPU_DoubleU v2;
v2.ll = cpu_ldq_data(env, a2);
env->fregs[f1].d = v1 = float64_sub(v1, v2.d, &env->fpu_status);
return set_cc_nz_f64(v1);
}
/* 64-bit FP multiplication RM */
void HELPER(mdb)(CPUS390XState *env, uint32_t f1, uint64_t a2)
{
@ -620,23 +603,6 @@ void HELPER(lzxr)(CPUS390XState *env, uint32_t f1)
env->fregs[f1 + 1].ll = x.ll.lower;
}
/* 128-bit FP subtraction RR */
uint32_t HELPER(sxbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
{
CPU_QuadU v1;
CPU_QuadU v2;
CPU_QuadU res;
v1.ll.upper = env->fregs[f1].ll;
v1.ll.lower = env->fregs[f1 + 2].ll;
v2.ll.upper = env->fregs[f2].ll;
v2.ll.lower = env->fregs[f2 + 2].ll;
res.q = float128_sub(v1.q, v2.q, &env->fpu_status);
env->fregs[f1].ll = res.ll.upper;
env->fregs[f1 + 2].ll = res.ll.lower;
return set_cc_nz_f128(res.q);
}
/* 32-bit FP multiplication RR */
void HELPER(meebr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
{