[Qemu-devel] [6184] Add vmh{,r}addshs instructions.

[Aurelien Jarno]

Revision: 6184
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6184
Author:   aurel32
Date:     2009-01-04 22:12:29 +0000 (Sun, 04 Jan 2009)

Log Message:
-----------
Add vmh{,r}addshs instructions.

Signed-off-by: Nathan Froyd <address@hidden>
Signed-off-by: Aurelien Jarno <address@hidden>

Modified Paths:
--------------
    trunk/target-ppc/helper.h
    trunk/target-ppc/op_helper.c
    trunk/target-ppc/translate.c

Modified: trunk/target-ppc/helper.h
===================================================================
--- trunk/target-ppc/helper.h   2009-01-04 22:12:19 UTC (rev 6183)
+++ trunk/target-ppc/helper.h   2009-01-04 22:12:29 UTC (rev 6184)
@@ -178,6 +178,8 @@
 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)

Modified: trunk/target-ppc/op_helper.c
===================================================================
--- trunk/target-ppc/op_helper.c        2009-01-04 22:12:19 UTC (rev 6183)
+++ trunk/target-ppc/op_helper.c        2009-01-04 22:12:29 UTC (rev 6184)
@@ -2061,6 +2061,38 @@
 #undef VAVG_DO
 #undef VAVG
 
+void helper_vmhaddshs (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
+{
+    int sat = 0;
+    int i;
+
+    for (i = 0; i < ARRAY_SIZE(r->s16); i++) {
+        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;
+    int i;
+
+    for (i = 0; i < ARRAY_SIZE(r->s16); i++) {
+        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)      \
     {                                                                   \

Modified: trunk/target-ppc/translate.c
===================================================================
--- trunk/target-ppc/translate.c        2009-01-04 22:12:19 UTC (rev 6183)
+++ trunk/target-ppc/translate.c        2009-01-04 22:12:29 UTC (rev 6184)
@@ -6385,6 +6385,8 @@
         tcg_temp_free_ptr(rd);                                          \
     }
 
+GEN_VAFORM_PAIRED(vmhaddshs, vmhraddshs, 16)
+
 GEN_VAFORM_PAIRED(vmsumubm, vmsummbm, 18)
 GEN_VAFORM_PAIRED(vsel, vperm, 21)