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[Qemu-devel] [6570] target-ppc: Add vmaddfp and vnmsubfp instructions
From: |
Aurelien Jarno |
Subject: |
[Qemu-devel] [6570] target-ppc: Add vmaddfp and vnmsubfp instructions |
Date: |
Mon, 09 Feb 2009 16:49:00 +0000 |
Revision: 6570
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6570
Author: aurel32
Date: 2009-02-09 16:48:59 +0000 (Mon, 09 Feb 2009)
Log Message:
-----------
target-ppc: Add vmaddfp and vnmsubfp 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 2009-02-09 16:48:51 UTC (rev 6569)
+++ trunk/target-ppc/helper.h 2009-02-09 16:48:59 UTC (rev 6570)
@@ -236,6 +236,8 @@
DEF_HELPER_3(vsubfp, void, avr, avr, avr)
DEF_HELPER_3(vmaxfp, void, avr, avr, avr)
DEF_HELPER_3(vminfp, void, avr, avr, avr)
+DEF_HELPER_4(vmaddfp, void, avr, avr, avr, avr)
+DEF_HELPER_4(vnmsubfp, void, avr, avr, avr, avr)
DEF_HELPER_2(vlogefp, void, avr, avr)
DEF_HELPER_2(vrfim, void, avr, avr)
DEF_HELPER_2(vrfin, void, avr, avr)
Modified: trunk/target-ppc/op_helper.c
===================================================================
--- trunk/target-ppc/op_helper.c 2009-02-09 16:48:51 UTC (rev 6569)
+++ trunk/target-ppc/op_helper.c 2009-02-09 16:48:59 UTC (rev 6570)
@@ -2220,6 +2220,24 @@
#undef VCMP_DO
#undef VCMP
+void helper_vmaddfp (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(r->f); i++) {
+ HANDLE_NAN3(r->f[i], a->f[i], b->f[i], c->f[i]) {
+ /* Need to do the computation in higher precision and round
+ * once at the end. */
+ float64 af, bf, cf, t;
+ af = float32_to_float64(a->f[i], &env->vec_status);
+ bf = float32_to_float64(b->f[i], &env->vec_status);
+ cf = float32_to_float64(c->f[i], &env->vec_status);
+ t = float64_mul(af, cf, &env->vec_status);
+ t = float64_add(t, bf, &env->vec_status);
+ r->f[i] = float64_to_float32(t, &env->vec_status);
+ }
+ }
+}
+
void helper_vmhaddshs (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
{
int sat = 0;
@@ -2456,6 +2474,25 @@
#undef VMUL_DO
#undef VMUL
+void helper_vnmsubfp (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(r->f); i++) {
+ HANDLE_NAN3(r->f[i], a->f[i], b->f[i], c->f[i]) {
+ /* Need to do the computation is higher precision and round
+ * once at the end. */
+ float64 af, bf, cf, t;
+ af = float32_to_float64(a->f[i], &env->vec_status);
+ bf = float32_to_float64(b->f[i], &env->vec_status);
+ cf = float32_to_float64(c->f[i], &env->vec_status);
+ t = float64_mul(af, cf, &env->vec_status);
+ t = float64_sub(t, bf, &env->vec_status);
+ t = float64_chs(t);
+ r->f[i] = float64_to_float32(t, &env->vec_status);
+ }
+ }
+}
+
void helper_vperm (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
{
ppc_avr_t result;
Modified: trunk/target-ppc/translate.c
===================================================================
--- trunk/target-ppc/translate.c 2009-02-09 16:48:51 UTC (rev 6569)
+++ trunk/target-ppc/translate.c 2009-02-09 16:48:59 UTC (rev 6570)
@@ -6584,6 +6584,7 @@
GEN_VAFORM_PAIRED(vmsumuhm, vmsumuhs, 19)
GEN_VAFORM_PAIRED(vmsumshm, vmsumshs, 20)
GEN_VAFORM_PAIRED(vsel, vperm, 21)
+GEN_VAFORM_PAIRED(vmaddfp, vnmsubfp, 23)
/*** SPE extension ***/
/* Register moves */
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