diff options
Diffstat (limited to 'target-ppc')
| -rw-r--r-- | target-ppc/translate.c | 35 |
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), |