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Diffstat (limited to 'target/s390x/vec_fpu_helper.c')
-rw-r--r--target/s390x/vec_fpu_helper.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/target/s390x/vec_fpu_helper.c b/target/s390x/vec_fpu_helper.c
index e72500d4d5..53430c7843 100644
--- a/target/s390x/vec_fpu_helper.c
+++ b/target/s390x/vec_fpu_helper.c
@@ -78,6 +78,30 @@ static void handle_ieee_exc(CPUS390XState *env, uint8_t vxc, uint8_t vec_exc,
}
}
+typedef uint64_t (*vop64_2_fn)(uint64_t a, float_status *s);
+static void vop64_2(S390Vector *v1, const S390Vector *v2, CPUS390XState *env,
+ bool s, bool XxC, uint8_t erm, vop64_2_fn fn,
+ uintptr_t retaddr)
+{
+ uint8_t vxc, vec_exc = 0;
+ S390Vector tmp = {};
+ int i, old_mode;
+
+ old_mode = s390_swap_bfp_rounding_mode(env, erm);
+ for (i = 0; i < 2; i++) {
+ const uint64_t a = s390_vec_read_element64(v2, i);
+
+ s390_vec_write_element64(&tmp, i, fn(a, &env->fpu_status));
+ vxc = check_ieee_exc(env, i, XxC, &vec_exc);
+ if (s || vxc) {
+ break;
+ }
+ }
+ s390_restore_bfp_rounding_mode(env, old_mode);
+ handle_ieee_exc(env, vxc, vec_exc, retaddr);
+ *v1 = tmp;
+}
+
typedef uint64_t (*vop64_3_fn)(uint64_t a, uint64_t b, float_status *s);
static void vop64_3(S390Vector *v1, const S390Vector *v2, const S390Vector *v3,
CPUS390XState *env, bool s, vop64_3_fn fn,
@@ -253,3 +277,26 @@ void HELPER(gvec_vfche64s_cc)(void *v1, const void *v2, const void *v3,
{
env->cc_op = vfc64(v1, v2, v3, env, true, float64_le_quiet, GETPC());
}
+
+static uint64_t vcdg64(uint64_t a, float_status *s)
+{
+ return int64_to_float64(a, s);
+}
+
+void HELPER(gvec_vcdg64)(void *v1, const void *v2, CPUS390XState *env,
+ uint32_t desc)
+{
+ const uint8_t erm = extract32(simd_data(desc), 4, 4);
+ const bool XxC = extract32(simd_data(desc), 2, 1);
+
+ vop64_2(v1, v2, env, false, XxC, erm, vcdg64, GETPC());
+}
+
+void HELPER(gvec_vcdg64s)(void *v1, const void *v2, CPUS390XState *env,
+ uint32_t desc)
+{
+ const uint8_t erm = extract32(simd_data(desc), 4, 4);
+ const bool XxC = extract32(simd_data(desc), 2, 1);
+
+ vop64_2(v1, v2, env, true, XxC, erm, vcdg64, GETPC());
+}