diff options
| author | aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-11-15 12:12:08 +0000 |
|---|---|---|
| committer | aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-11-15 12:12:08 +0000 |
| commit | da80682b4220712d65af5ba041e2d7411d98d528 (patch) | |
| tree | 725d82cd7edab5a4ef31fcef744910c9200d9de0 /target-mips/translate.c | |
| parent | 64b4d28c38ccf69a468b90e8e45563ac947cd9b0 (diff) | |
| download | qemu-da80682b4220712d65af5ba041e2d7411d98d528.tar.gz | |
target-mips: avoid tcg internal error in mfc0/dmfc0
Set t0 to 0 for unimplemented mfc0/dmfc0 instructions. This fixes a tcg
internal error while booting mips linux.
Noticed by Julia Longtin.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5723 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-mips/translate.c')
| -rw-r--r-- | target-mips/translate.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/target-mips/translate.c b/target-mips/translate.c index 386e0e37d1..cefccb01a2 100644 --- a/target-mips/translate.c +++ b/target-mips/translate.c @@ -3186,7 +3186,7 @@ static void gen_mfc0 (CPUState *env, DisasContext *ctx, TCGv t0, int reg, int se } break; case 22: - /* ignored */ + tcg_gen_movi_tl(t0, 0); /* unimplemented */ rn = "'Diagnostic"; /* implementation dependent */ break; case 23: @@ -3266,12 +3266,13 @@ static void gen_mfc0 (CPUState *env, DisasContext *ctx, TCGv t0, int reg, int se } break; case 26: - rn = "ECC"; - break; + tcg_gen_movi_tl(t0, 0); /* unimplemented */ + rn = "ECC"; + break; case 27: switch (sel) { - /* ignored */ case 0 ... 3: + tcg_gen_movi_tl(t0, 0); /* unimplemented */ rn = "CacheErr"; break; default: @@ -4372,7 +4373,7 @@ static void gen_dmfc0 (CPUState *env, DisasContext *ctx, TCGv t0, int reg, int s } break; case 22: - /* ignored */ + tcg_gen_movi_tl(t0, 0); /* unimplemented */ rn = "'Diagnostic"; /* implementation dependent */ break; case 23: @@ -4451,12 +4452,14 @@ static void gen_dmfc0 (CPUState *env, DisasContext *ctx, TCGv t0, int reg, int s } break; case 26: - rn = "ECC"; - break; + tcg_gen_movi_tl(t0, 0); /* unimplemented */ + rn = "ECC"; + break; case 27: switch (sel) { /* ignored */ case 0 ... 3: + tcg_gen_movi_tl(t0, 0); /* unimplemented */ rn = "CacheErr"; break; default: @@ -8013,7 +8016,7 @@ static void decode_opc (CPUState *env, DisasContext *ctx) case OPC_EMT: check_insn(env, ctx, ASE_MT); tcg_gen_helper_1_1(do_emt, t0, t0); - break; + break; case OPC_DVPE: check_insn(env, ctx, ASE_MT); tcg_gen_helper_1_1(do_dvpe, t0, t0); |