[Qemu-devel] [6174] Add vsplt{b,h,w} instructions.

[Qemu-devel] [6174] Add vsplt{b,h,w} instructions.

[Aurelien Jarno]

Revision: 6174
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6174
Author:   aurel32
Date:     2009-01-04 22:10:49 +0000 (Sun, 04 Jan 2009)

Log Message:
-----------
Add vsplt{b,h,w} instructions.

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	2009-01-04 22:10:40 UTC (rev 6173)
+++ trunk/target-ppc/helper.h	2009-01-04 22:10:49 UTC (rev 6174)
@@ -156,6 +156,9 @@
 DEF_HELPER_3(vrlh, void, avr, avr, avr)
 DEF_HELPER_3(vrlw, void, avr, avr, avr)
 DEF_HELPER_4(vsldoi, void, avr, avr, avr, i32)
+DEF_HELPER_3(vspltb, void, avr, avr, i32)
+DEF_HELPER_3(vsplth, void, avr, avr, i32)
+DEF_HELPER_3(vspltw, void, avr, avr, i32)
 
 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 22:10:40 UTC (rev 6173)
+++ trunk/target-ppc/op_helper.c	2009-01-04 22:10:49 UTC (rev 6174)
@@ -2186,6 +2186,29 @@
 #endif
 }
 
+/* Experimental testing shows that hardware masks the immediate.  */
+#define _SPLAT_MASKED(element) (splat & (ARRAY_SIZE(r->element) - 1))
+#if defined(WORDS_BIGENDIAN)
+#define SPLAT_ELEMENT(element) _SPLAT_MASKED(element)
+#else
+#define SPLAT_ELEMENT(element) (ARRAY_SIZE(r->element)-1 - _SPLAT_MASKED(element))
+#endif
+#define VSPLT(suffix, element)                                          \
+    void helper_vsplt##suffix (ppc_avr_t *r, ppc_avr_t *b, uint32_t splat) \
+    {                                                                   \
+        uint32_t s = b->element[SPLAT_ELEMENT(element)];                \
+        int i;                                                          \
+        for (i = 0; i < ARRAY_SIZE(r->element); i++) {                  \
+            r->element[i] = s;                                          \
+        }                                                               \
+    }
+VSPLT(b, u8)
+VSPLT(h, u16)
+VSPLT(w, u32)
+#undef VSPLT
+#undef SPLAT_ELEMENT
+#undef _SPLAT_MASKED
+
 #define VSR(suffix, element)                                            \
     void helper_vsr##suffix (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 22:10:40 UTC (rev 6173)
+++ trunk/target-ppc/translate.c	2009-01-04 22:10:49 UTC (rev 6174)
@@ -6308,6 +6308,10 @@
         tcg_temp_free_ptr(rd);                                          \
     }
 
+GEN_VXFORM_UIMM(vspltb, 6, 8);
+GEN_VXFORM_UIMM(vsplth, 6, 9);
+GEN_VXFORM_UIMM(vspltw, 6, 10);
+
 GEN_HANDLER(vsldoi, 0x04, 0x16, 0xFF, 0x00000400, PPC_ALTIVEC)
 {
     TCGv_ptr ra, rb, rd;