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[Qemu-devel] [PATCH 37/42] target-ppc: add vmh{, r}addshs instructions.


From: Nathan Froyd
Subject: [Qemu-devel] [PATCH 37/42] target-ppc: add vmh{, r}addshs instructions.
Date: Sun, 14 Dec 2008 18:15:10 -0800

Signed-off-by: Nathan Froyd <address@hidden>
---
 target-ppc/helper.h    |    2 ++
 target-ppc/op_helper.c |   30 ++++++++++++++++++++++++++++++
 target-ppc/translate.c |    1 +
 3 files changed, 33 insertions(+), 0 deletions(-)

diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index e2ad294..8ea8ddd 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -204,6 +204,8 @@ DEF_HELPER_3(vpkuwus, void, avr, avr, avr)
 DEF_HELPER_3(vpkuhum, void, avr, avr, avr)
 DEF_HELPER_3(vpkuwum, void, avr, avr, avr)
 DEF_HELPER_3(vpkpx, void, avr, avr, avr)
+DEF_HELPER_4(vmhaddshs, void, avr, avr, avr, avr)
+DEF_HELPER_4(vmhraddshs, void, avr, avr, avr, avr)
 
 DEF_HELPER_1(efscfsi, i32, i32)
 DEF_HELPER_1(efscfui, i32, i32)
diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c
index 422600a..994c1af 100644
--- a/target-ppc/op_helper.c
+++ b/target-ppc/op_helper.c
@@ -2197,6 +2197,36 @@ VCMP(gtsh, >, s16)
 VCMP(gtsw, >, s32)
 #undef VCMP
 
+void helper_vmhaddshs (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
+{
+  int sat = 0;
+
+  VECTOR_FOR (s16) {
+    int32_t prod = a->s16[i] * b->s16[i];
+    int32_t t = (int32_t)c->s16[i] + (prod >> 15);
+    r->s16[i] = cvtswsh (t, &sat);
+  }
+
+  if (sat) {
+    env->vscr |= (1 << VSCR_SAT);
+  }
+}
+
+void helper_vmhraddshs (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
+{
+  int sat = 0;
+
+  VECTOR_FOR (s16) {
+    int32_t prod = a->s16[i] * b->s16[i] + 0x00004000;
+    int32_t t = (int32_t)c->s16[i] + (prod >> 15);
+    r->s16[i] = cvtswsh (t, &sat);
+  }
+
+  if (sat) {
+    env->vscr |= (1 << VSCR_SAT);
+  }
+}
+
 #define VMINMAX_DO(name, compare, element)                              \
     void helper_v##name (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)      \
     {                                                                   \
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 4294148..3a4a3cb 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -6451,6 +6451,7 @@ GEN_HANDLER(vsldoi, 0x04, 0x16, 0xFF, 0x00000400, 
PPC_ALTIVEC)
         tcg_temp_free (rd);                                             \
     }
 
+GEN_VAFORM_PAIRED(vmhaddshs, vmhraddshs, 32)
 GEN_VAFORM_PAIRED(vmsumubm, vmsummbm, 36)
 GEN_VAFORM_PAIRED(vsel, vperm, 42)
 
-- 
1.6.0.5





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