aboutsummaryrefslogtreecommitdiff
path: root/target/ppc/translate/vmx-impl.inc.c
diff options
context:
space:
mode:
authorRichard Henderson <richard.henderson@linaro.org>2019-02-15 10:00:45 +0000
committerDavid Gibson <david@gibson.dropbear.id.au>2019-02-18 11:00:44 +1100
commit0f6a6d5db853c0cbe438c1831c70710bfb6530ee (patch)
tree9627016edff919ead6553ff7d59fc2dff0c1bcfe /target/ppc/translate/vmx-impl.inc.c
parent471ff3d0257135b938d0a5f2181f22cd753d50de (diff)
target/ppc: convert vsplt[bhw] to use vector operations
Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: David Gibson <david@gibson.dropbear.id.au> Message-Id: <20190215100058.20015-5-mark.cave-ayland@ilande.co.uk> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'target/ppc/translate/vmx-impl.inc.c')
-rw-r--r--target/ppc/translate/vmx-impl.inc.c46
1 files changed, 27 insertions, 19 deletions
diff --git a/target/ppc/translate/vmx-impl.inc.c b/target/ppc/translate/vmx-impl.inc.c
index c26c342e16..41ddbd879f 100644
--- a/target/ppc/translate/vmx-impl.inc.c
+++ b/target/ppc/translate/vmx-impl.inc.c
@@ -798,24 +798,32 @@ GEN_VXFORM_NOA(vprtybw, 1, 24);
GEN_VXFORM_NOA(vprtybd, 1, 24);
GEN_VXFORM_NOA(vprtybq, 1, 24);
-#define GEN_VXFORM_UIMM(name, opc2, opc3) \
-static void glue(gen_, name)(DisasContext *ctx) \
- { \
- TCGv_ptr rb, rd; \
- TCGv_i32 uimm; \
- if (unlikely(!ctx->altivec_enabled)) { \
- gen_exception(ctx, POWERPC_EXCP_VPU); \
- return; \
- } \
- uimm = tcg_const_i32(UIMM5(ctx->opcode)); \
- rb = gen_avr_ptr(rB(ctx->opcode)); \
- rd = gen_avr_ptr(rD(ctx->opcode)); \
- gen_helper_##name (rd, rb, uimm); \
- tcg_temp_free_i32(uimm); \
- tcg_temp_free_ptr(rb); \
- tcg_temp_free_ptr(rd); \
+static void gen_vsplt(DisasContext *ctx, int vece)
+{
+ int uimm, dofs, bofs;
+
+ if (unlikely(!ctx->altivec_enabled)) {
+ gen_exception(ctx, POWERPC_EXCP_VPU);
+ return;
}
+ uimm = UIMM5(ctx->opcode);
+ bofs = avr64_offset(rB(ctx->opcode), true);
+ dofs = avr64_offset(rD(ctx->opcode), true);
+
+ /* Experimental testing shows that hardware masks the immediate. */
+ bofs += (uimm << vece) & 15;
+#ifndef HOST_WORDS_BIGENDIAN
+ bofs ^= 15;
+ bofs &= ~((1 << vece) - 1);
+#endif
+
+ tcg_gen_gvec_dup_mem(vece, dofs, bofs, 16, 16);
+}
+
+#define GEN_VXFORM_VSPLT(name, vece, opc2, opc3) \
+static void glue(gen_, name)(DisasContext *ctx) { gen_vsplt(ctx, vece); }
+
#define GEN_VXFORM_UIMM_ENV(name, opc2, opc3) \
static void glue(gen_, name)(DisasContext *ctx) \
{ \
@@ -858,9 +866,9 @@ static void glue(gen_, name)(DisasContext *ctx) \
tcg_temp_free_ptr(rd); \
}
-GEN_VXFORM_UIMM(vspltb, 6, 8);
-GEN_VXFORM_UIMM(vsplth, 6, 9);
-GEN_VXFORM_UIMM(vspltw, 6, 10);
+GEN_VXFORM_VSPLT(vspltb, MO_8, 6, 8);
+GEN_VXFORM_VSPLT(vsplth, MO_16, 6, 9);
+GEN_VXFORM_VSPLT(vspltw, MO_32, 6, 10);
GEN_VXFORM_UIMM_SPLAT(vextractub, 6, 8, 15);
GEN_VXFORM_UIMM_SPLAT(vextractuh, 6, 9, 14);
GEN_VXFORM_UIMM_SPLAT(vextractuw, 6, 10, 12);