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| author | Yongbok Kim <yongbok.kim@imgtec.com> | 2014-06-27 08:49:08 +0100 |
|---|---|---|
| committer | Leon Alrae <leon.alrae@imgtec.com> | 2014-10-14 13:28:52 +0100 |
| commit | 0aefa33318be6a9a6438c31921d426a755f1a2e9 (patch) | |
| tree | 631bd8b1b986cc290a7764e20533d9416871b833 /target-mips | |
| parent | ddc584bdb5375f260e7dcec3831d1bb32f665d25 (diff) | |
| download | qemu-0aefa33318be6a9a6438c31921d426a755f1a2e9.tar.gz | |
target-mips: remove JR, BLTZAL, BGEZAL and add NAL, BAL instructions
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-mips')
| -rw-r--r-- | target-mips/translate.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/target-mips/translate.c b/target-mips/translate.c index 80887812ca..57c2d414d6 100644 --- a/target-mips/translate.c +++ b/target-mips/translate.c @@ -15851,6 +15851,9 @@ static void decode_opc_special_legacy(CPUMIPSState *env, DisasContext *ctx) gen_muldiv(ctx, op1, 0, rs, rt); break; #endif + case OPC_JR: + gen_compute_branch(ctx, op1, 4, rs, rd, sa); + break; case OPC_SPIM: #ifdef MIPS_STRICT_STANDARD MIPS_INVAL("SPIM"); @@ -15933,7 +15936,7 @@ static void decode_opc_special(CPUMIPSState *env, DisasContext *ctx) case OPC_XOR: gen_logic(ctx, op1, rd, rs, rt); break; - case OPC_JR ... OPC_JALR: + case OPC_JALR: gen_compute_branch(ctx, op1, 4, rs, rd, sa); break; case OPC_TGE ... OPC_TEQ: /* Traps */ @@ -16903,9 +16906,20 @@ static void decode_opc (CPUMIPSState *env, DisasContext *ctx) check_insn_opc_removed(ctx, ISA_MIPS32R6); case OPC_BLTZ: case OPC_BGEZ: + gen_compute_branch(ctx, op1, 4, rs, -1, imm << 2); + break; case OPC_BLTZAL: case OPC_BGEZAL: - gen_compute_branch(ctx, op1, 4, rs, -1, imm << 2); + if (ctx->insn_flags & ISA_MIPS32R6) { + if (rs == 0) { + /* OPC_NAL, OPC_BAL */ + gen_compute_branch(ctx, op1, 4, 0, -1, imm << 2); + } else { + generate_exception(ctx, EXCP_RI); + } + } else { + gen_compute_branch(ctx, op1, 4, rs, -1, imm << 2); + } break; case OPC_TGEI ... OPC_TEQI: /* REGIMM traps */ case OPC_TNEI: |