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authorRichard Henderson <rth@twiddle.net>2012-09-07 11:41:12 -0700
committerRichard Henderson <rth@twiddle.net>2013-01-05 12:18:41 -0800
commitf08a5c311d3047f2cafe72e3e377674e7f8acdcb (patch)
tree677cb8342f6fbc6f73f3637779c3e7d12d1525c8 /target-s390x/fpu_helper.c
parent1a800a2dcee541dee4f51aed5110ca9d5811c5e8 (diff)
downloadqemu-f08a5c311d3047f2cafe72e3e377674e7f8acdcb.tar.gz
target-s390: Convert FP DIVIDE
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-s390x/fpu_helper.c')
-rw-r--r--target-s390x/fpu_helper.c68
1 files changed, 20 insertions, 48 deletions
diff --git a/target-s390x/fpu_helper.c b/target-s390x/fpu_helper.c
index ea61936571..b0c18ee7c2 100644
--- a/target-s390x/fpu_helper.c
+++ b/target-s390x/fpu_helper.c
@@ -239,28 +239,31 @@ uint64_t HELPER(sxb)(CPUS390XState *env, uint64_t ah, uint64_t al,
return RET128(ret);
}
-/* 32-bit FP division RR */
-void HELPER(debr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
+/* 32-bit FP division */
+uint64_t HELPER(deb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
{
- env->fregs[f1].l.upper = float32_div(env->fregs[f1].l.upper,
- env->fregs[f2].l.upper,
- &env->fpu_status);
+ float32 ret = float32_div(f1, f2, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
}
-/* 128-bit FP division RR */
-void HELPER(dxbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
+/* 64-bit FP division */
+uint64_t HELPER(ddb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
{
- CPU_QuadU v1;
- CPU_QuadU v2;
- CPU_QuadU res;
+ float64 ret = float64_div(f1, f2, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
+}
- 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_div(v1.q, v2.q, &env->fpu_status);
- env->fregs[f1].ll = res.ll.upper;
- env->fregs[f1 + 2].ll = res.ll.lower;
+/* 128-bit FP division */
+uint64_t HELPER(dxb)(CPUS390XState *env, uint64_t ah, uint64_t al,
+ uint64_t bh, uint64_t bl)
+{
+ float128 ret = float128_div(make_float128(ah, al),
+ make_float128(bh, bl),
+ &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return RET128(ret);
}
/* 64-bit FP multiplication RR */
@@ -399,18 +402,6 @@ uint32_t HELPER(lcxbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
return set_cc_nz_f128(x1.q);
}
-/* 32-bit FP division RM */
-void HELPER(deb)(CPUS390XState *env, uint32_t f1, uint32_t val)
-{
- float32 v1 = env->fregs[f1].l.upper;
- CPU_FloatU v2;
-
- v2.l = val;
- HELPER_LOG("%s: dividing 0x%d from f%d by 0x%d\n", __func__,
- v1, f1, v2.f);
- env->fregs[f1].l.upper = float32_div(v1, v2.f, &env->fpu_status);
-}
-
/* 32-bit FP multiplication RM */
void HELPER(meeb)(CPUS390XState *env, uint32_t f1, uint32_t val)
{
@@ -462,18 +453,6 @@ void HELPER(mdb)(CPUS390XState *env, uint32_t f1, uint64_t a2)
env->fregs[f1].d = float64_mul(v1, v2.d, &env->fpu_status);
}
-/* 64-bit FP division RM */
-void HELPER(ddb)(CPUS390XState *env, uint32_t f1, uint64_t a2)
-{
- float64 v1 = env->fregs[f1].d;
- CPU_DoubleU v2;
-
- v2.ll = cpu_ldq_data(env, a2);
- HELPER_LOG("%s: dividing 0x%lx from f%d by 0x%ld\n", __func__,
- v1, f1, v2.d);
- env->fregs[f1].d = float64_div(v1, v2.d, &env->fpu_status);
-}
-
static void set_round_mode(CPUS390XState *env, int m3)
{
switch (m3) {
@@ -611,13 +590,6 @@ void HELPER(meebr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
&env->fpu_status);
}
-/* 64-bit FP division RR */
-void HELPER(ddbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
-{
- env->fregs[f1].d = float64_div(env->fregs[f1].d, env->fregs[f2].d,
- &env->fpu_status);
-}
-
/* 64-bit FP multiply and add RM */
void HELPER(madb)(CPUS390XState *env, uint32_t f1, uint64_t a2, uint32_t f3)
{