[Qemu-devel] [6574] target-ppc: Add vrsqrtefp instruction

[Qemu-devel] [6574] target-ppc: Add vrsqrtefp instruction

[Aurelien Jarno]

Revision: 6574
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6574
Author:   aurel32
Date:     2009-02-09 16:49:40 +0000 (Mon, 09 Feb 2009)

Log Message:
-----------
target-ppc: Add vrsqrtefp instruction

Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

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 16:49:29 UTC (rev 6573)
+++ trunk/target-ppc/helper.h	2009-02-09 16:49:40 UTC (rev 6574)
@@ -245,6 +245,7 @@
 DEF_HELPER_3(vmaxfp, void, avr, avr, avr)
 DEF_HELPER_3(vminfp, void, avr, avr, avr)
 DEF_HELPER_2(vrefp, void, avr, avr)
+DEF_HELPER_2(vrsqrtefp, void, 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)

Modified: trunk/target-ppc/op_helper.c
===================================================================
--- trunk/target-ppc/op_helper.c	2009-02-09 16:49:29 UTC (rev 6573)
+++ trunk/target-ppc/op_helper.c	2009-02-09 16:49:40 UTC (rev 6574)
@@ -2707,6 +2707,17 @@
 VROTATE(w, u32)
 #undef VROTATE
 
+void helper_vrsqrtefp (ppc_avr_t *r, ppc_avr_t *b)
+{
+    int i;
+    for (i = 0; i < ARRAY_SIZE(r->f); i++) {
+        HANDLE_NAN1(r->f[i], b->f[i]) {
+            float32 t = float32_sqrt(b->f[i], &env->vec_status);
+            r->f[i] = float32_div(float32_one, t, &env->vec_status);
+        }
+    }
+}
+
 void helper_vsel (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
 {
     r->u64[0] = (a->u64[0] & ~c->u64[0]) | (b->u64[0] & c->u64[0]);

Modified: trunk/target-ppc/translate.c
===================================================================
--- trunk/target-ppc/translate.c	2009-02-09 16:49:29 UTC (rev 6573)
+++ trunk/target-ppc/translate.c	2009-02-09 16:49:40 UTC (rev 6574)
@@ -6477,6 +6477,7 @@
 GEN_VXFORM_NOA(vupkhpx, 7, 13);
 GEN_VXFORM_NOA(vupklpx, 7, 15);
 GEN_VXFORM_NOA(vrefp, 5, 4);
+GEN_VXFORM_NOA(vrsqrtefp, 5, 5);
 GEN_VXFORM_NOA(vlogefp, 5, 7);
 GEN_VXFORM_NOA(vrfim, 5, 8);
 GEN_VXFORM_NOA(vrfin, 5, 9);