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authorBrian Paul <brian.paul@tungstengraphics.com>2008-09-12 21:08:01 -0600
committerBrian Paul <brian.paul@tungstengraphics.com>2008-09-12 21:08:01 -0600
commit31a112cad4d2e515bc668b58abd4e402b4362c70 (patch)
treef953faee3ee5c98dc2e60642fda63e308e5949a5 /src/gallium/auxiliary/rtasm
parent5f3ec823385b34b8db6013fdf701c5522dc86524 (diff)
gallium: added spe_splat_word()
Diffstat (limited to 'src/gallium/auxiliary/rtasm')
-rw-r--r--src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c25
-rw-r--r--src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h4
2 files changed, 29 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
index 62e3adb357..89f8e24ce6 100644
--- a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
+++ b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
@@ -540,4 +540,29 @@ spe_zero(struct spe_function *p, unsigned rT)
}
+void
+spe_splat_word(struct spe_function *p, unsigned rT, unsigned rA, int word)
+{
+ assert(word >= 0);
+ assert(word <= 3);
+
+ if (word == 0) {
+ int tmp1 = rT;
+ spe_ila(p, tmp1, 66051);
+ spe_shufb(p, rT, rA, rA, tmp1);
+ }
+ else {
+ /* XXX review this, we may not need the rotqbyi instruction */
+ int tmp1 = rT;
+ int tmp2 = spe_allocate_available_register(p);
+
+ spe_ila(p, tmp1, 66051);
+ spe_rotqbyi(p, tmp2, rA, 4 * word);
+ spe_shufb(p, rT, tmp2, tmp2, tmp1);
+
+ spe_release_register(p, tmp2);
+ }
+}
+
+
#endif /* GALLIUM_CELL */
diff --git a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h
index d95e5aace3..7a3ab9ace5 100644
--- a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h
+++ b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h
@@ -308,6 +308,10 @@ spe_move(struct spe_function *p, unsigned rT, unsigned rA);
extern void
spe_zero(struct spe_function *p, unsigned rT);
+/** rT = splat(rA, word) */
+extern void
+spe_splat_word(struct spe_function *p, unsigned rT, unsigned rA, int word);
+
/* Floating-point instructions
*/