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-rw-r--r--target-ppc/translate.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index a55789f396..75ab70b928 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -387,6 +387,8 @@ EXTRACT_HELPER(opc2, 1, 5);
EXTRACT_HELPER(opc3, 6, 5);
/* Update Cr0 flags */
EXTRACT_HELPER(Rc, 0, 1);
+/* Update Cr6 flags (Altivec) */
+EXTRACT_HELPER(Rc21, 10, 1);
/* Destination */
EXTRACT_HELPER(rD, 21, 5);
/* Source */
@@ -7032,6 +7034,34 @@ static void glue(gen_, name)(DisasContext *ctx) \
GEN_VXRFORM1(name, name, #name, opc2, opc3) \
GEN_VXRFORM1(name##_dot, name##_, #name ".", opc2, (opc3 | (0x1 << 4)))
+/*
+ * Support for Altivec instructions that use bit 31 (Rc) as an opcode
+ * bit but also use bit 21 as an actual Rc bit. In general, thse pairs
+ * come from different versions of the ISA, so we must also support a
+ * pair of flags for each instruction.
+ */
+#define GEN_VXRFORM_DUAL(name0, flg0, flg2_0, name1, flg1, flg2_1) \
+static void glue(gen_, name0##_##name1)(DisasContext *ctx) \
+{ \
+ if ((Rc(ctx->opcode) == 0) && \
+ ((ctx->insns_flags & flg0) || (ctx->insns_flags2 & flg2_0))) { \
+ if (Rc21(ctx->opcode) == 0) { \
+ gen_##name0(ctx); \
+ } else { \
+ gen_##name0##_(ctx); \
+ } \
+ } else if ((Rc(ctx->opcode) == 1) && \
+ ((ctx->insns_flags & flg1) || (ctx->insns_flags2 & flg2_1))) { \
+ if (Rc21(ctx->opcode) == 0) { \
+ gen_##name1(ctx); \
+ } else { \
+ gen_##name1##_(ctx); \
+ } \
+ } else { \
+ gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL); \
+ } \
+}
+
GEN_VXRFORM(vcmpequb, 3, 0)
GEN_VXRFORM(vcmpequh, 3, 1)
GEN_VXRFORM(vcmpequw, 3, 2)
@@ -10289,6 +10319,11 @@ GEN_HANDLER_E(name, 0x04, opc2, opc3, 0x00000000, PPC_NONE, PPC2_ALTIVEC_207)
#define GEN_VXFORM_DUAL(name0, name1, opc2, opc3, type0, type1) \
GEN_HANDLER_E(name0##_##name1, 0x4, opc2, opc3, 0x00000000, type0, type1)
+#undef GEN_VXRFORM_DUAL
+#define GEN_VXRFORM_DUAL(name0, name1, opc2, opc3, tp0, tp1) \
+GEN_HANDLER_E(name0##_##name1, 0x4, opc2, opc3, 0x00000000, tp0, tp1), \
+GEN_HANDLER_E(name0##_##name1, 0x4, opc2, (opc3 | 0x10), 0x00000000, tp0, tp1),
+
GEN_VXFORM(vaddubm, 0, 0),
GEN_VXFORM(vadduhm, 0, 1),
GEN_VXFORM(vadduwm, 0, 2),