diff options
Diffstat (limited to 'target-mips')
| -rw-r--r-- | target-mips/helper.h | 1 | ||||
| -rw-r--r-- | target-mips/op_helper.c | 8 | ||||
| -rw-r--r-- | target-mips/translate.c | 8 |
3 files changed, 15 insertions, 2 deletions
diff --git a/target-mips/helper.h b/target-mips/helper.h index 9d0275891c..3bd0b029e4 100644 --- a/target-mips/helper.h +++ b/target-mips/helper.h @@ -137,6 +137,7 @@ DEF_HELPER_2(mtc0_ebase, void, env, tl) DEF_HELPER_2(mttc0_ebase, void, env, tl) DEF_HELPER_2(mtc0_config0, void, env, tl) DEF_HELPER_2(mtc0_config2, void, env, tl) +DEF_HELPER_2(mtc0_config3, void, env, tl) DEF_HELPER_2(mtc0_config4, void, env, tl) DEF_HELPER_2(mtc0_config5, void, env, tl) DEF_HELPER_2(mtc0_lladdr, void, env, tl) diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c index 1ec2756373..1267ef297c 100644 --- a/target-mips/op_helper.c +++ b/target-mips/op_helper.c @@ -1503,6 +1503,14 @@ void helper_mtc0_config2(CPUMIPSState *env, target_ulong arg1) env->CP0_Config2 = (env->CP0_Config2 & 0x8FFF0FFF); } +void helper_mtc0_config3(CPUMIPSState *env, target_ulong arg1) +{ + if (env->insn_flags & ASE_MICROMIPS) { + env->CP0_Config3 = (env->CP0_Config3 & ~(1 << CP0C3_ISA_ON_EXC)) | + (arg1 & (1 << CP0C3_ISA_ON_EXC)); + } +} + void helper_mtc0_config4(CPUMIPSState *env, target_ulong arg1) { env->CP0_Config4 = (env->CP0_Config4 & (~env->CP0_Config4_rw_bitmask)) | diff --git a/target-mips/translate.c b/target-mips/translate.c index 70da66f958..d4fedfbd45 100644 --- a/target-mips/translate.c +++ b/target-mips/translate.c @@ -5846,8 +5846,10 @@ static void gen_mtc0(DisasContext *ctx, TCGv arg, int reg, int sel) ctx->bstate = BS_STOP; break; case 3: - /* ignored, read only */ + gen_helper_mtc0_config3(cpu_env, arg); rn = "Config3"; + /* Stop translation as we may have switched the execution mode */ + ctx->bstate = BS_STOP; break; case 4: gen_helper_mtc0_config4(cpu_env, arg); @@ -7097,8 +7099,10 @@ static void gen_dmtc0(DisasContext *ctx, TCGv arg, int reg, int sel) ctx->bstate = BS_STOP; break; case 3: - /* ignored */ + gen_helper_mtc0_config3(cpu_env, arg); rn = "Config3"; + /* Stop translation as we may have switched the execution mode */ + ctx->bstate = BS_STOP; break; case 4: /* currently ignored */ |