[PATCH 2/2] target/mips: Correct check for CABS instructions

[Jiaxun Yang]

Accroading to "MIPS Architecture for Programmers Volume IV-c:
The MIPS-3D Application-Specific Extension to the MIPS64 Architecture"
(MD00099). CABS.cond.fmt belongs to MIPS-3D ASE, and it has nothing to do
with COP1X opcode.

Remove all unnecessary COP1X checks and check for MIPS3D availability
in decoding code path.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 target/mips/tcg/translate.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/target/mips/tcg/translate.c b/target/mips/tcg/translate.c
index e49d2a25a8..23e575ad95 100644
--- a/target/mips/tcg/translate.c
+++ b/target/mips/tcg/translate.c
@@ -1788,16 +1788,8 @@ static inline void gen_cmp ## type ## _ ## 
fmt(DisasContext *ctx, int n,      \
         check_ps(ctx);                                                        \
         break;                                                                \
     case FMT_D:                                                               \
-        if (abs) {                                                            \
-            check_cop1x(ctx);                                                 \
-        }                                                                     \
         check_cp1_registers(ctx, fs | ft);                                    \
         break;                                                                \
-    case FMT_S:                                                               \
-        if (abs) {                                                            \
-            check_cop1x(ctx);                                                 \
-        }                                                                     \
-        break;                                                                \
     }                                                                         \
     gen_ldcmp_fpr##bits(ctx, fp0, fs);                                        \
     gen_ldcmp_fpr##bits(ctx, fp1, ft);                                        \
@@ -10424,6 +10416,7 @@ static void gen_farith(DisasContext *ctx, enum fopcode 
op1,
     case OPC_CMP_NGT_S:
         check_insn_opc_removed(ctx, ISA_MIPS_R6);
         if (ctx->opcode & (1 << 6)) {
+            check_insn(ctx, ASE_MIPS3D);
             gen_cmpabs_s(ctx, func - 48, ft, fs, cc);
         } else {
             gen_cmp_s(ctx, func - 48, ft, fs, cc);
-- 
2.34.1