diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2015-03-19 13:04:07 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2015-03-19 13:04:07 +0000 |
| commit | d88aec88cdd2cdb1939b88a8cdab0a5da3c4559b (patch) | |
| tree | 590f3d43e9fdbc4f99f6a407c26534a120ef2b4d /target-mips | |
| parent | 1cfa7e0ab223198b8b5449508d37613003d954a4 (diff) | |
| parent | 0af7a37054310384e00209e0a43efe95b7c19ef0 (diff) | |
Merge remote-tracking branch 'remotes/lalrae/tags/mips-20150318' into staging
MIPS patches 2015-03-18
Changes:
* bug fixes
# gpg: Signature made Wed Mar 18 10:06:00 2015 GMT using RSA key ID 0B29DA6B
# gpg: Can't check signature: public key not found
* remotes/lalrae/tags/mips-20150318:
target-mips: save cpu state before calling MSA load and store helpers
target-mips: fix hflags modified in delay / forbidden slot
target-mips: fix CP0.BadVAddr by stopping translation on Address Error
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-mips')
| -rw-r--r-- | target-mips/translate.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/target-mips/translate.c b/target-mips/translate.c index 9059bfd9f1..fd063a2aae 100644 --- a/target-mips/translate.c +++ b/target-mips/translate.c @@ -10531,14 +10531,25 @@ static void gen_rdhwr(DisasContext *ctx, int rt, int rd) tcg_temp_free(t0); } +static inline void clear_branch_hflags(DisasContext *ctx) +{ + ctx->hflags &= ~MIPS_HFLAG_BMASK; + if (ctx->bstate == BS_NONE) { + save_cpu_state(ctx, 0); + } else { + /* it is not safe to save ctx->hflags as hflags may be changed + in execution time by the instruction in delay / forbidden slot. */ + tcg_gen_andi_i32(hflags, hflags, ~MIPS_HFLAG_BMASK); + } +} + static void gen_branch(DisasContext *ctx, int insn_bytes) { if (ctx->hflags & MIPS_HFLAG_BMASK) { int proc_hflags = ctx->hflags & MIPS_HFLAG_BMASK; /* Branches completion */ - ctx->hflags &= ~MIPS_HFLAG_BMASK; + clear_branch_hflags(ctx); ctx->bstate = BS_BRANCH; - save_cpu_state(ctx, 0); /* FIXME: Need to clear can_do_io. */ switch (proc_hflags & MIPS_HFLAG_BMASK_BASE) { case MIPS_HFLAG_FBNSLOT: @@ -10596,8 +10607,8 @@ static void gen_branch(DisasContext *ctx, int insn_bytes) tcg_gen_exit_tb(0); break; default: - MIPS_DEBUG("unknown branch"); - break; + fprintf(stderr, "unknown branch 0x%x\n", proc_hflags); + abort(); } } } @@ -18403,12 +18414,14 @@ static void gen_msa(CPUMIPSState *env, DisasContext *ctx) case OPC_LD_H: case OPC_LD_W: case OPC_LD_D: + save_cpu_state(ctx, 1); gen_helper_msa_ld_df(cpu_env, tdf, twd, trs, ts10); break; case OPC_ST_B: case OPC_ST_H: case OPC_ST_W: case OPC_ST_D: + save_cpu_state(ctx, 1); gen_helper_msa_st_df(cpu_env, tdf, twd, trs, ts10); break; } @@ -18438,6 +18451,7 @@ static void decode_opc(CPUMIPSState *env, DisasContext *ctx) if (ctx->pc & 0x3) { env->CP0_BadVAddr = ctx->pc; generate_exception_err(ctx, EXCP_AdEL, EXCP_INST_NOTAVAIL); + ctx->bstate = BS_STOP; return; } |