diff options
| author | Alexander Graf <agraf@suse.de> | 2012-01-20 04:07:51 +0100 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2012-02-02 02:47:46 +0100 |
| commit | 5935ee072d6fbcdf28ff6132ba6d8c3a1356bb0a (patch) | |
| tree | 81c5a4f4072c7f32ccb959228720f7b9277d924f /target-ppc | |
| parent | a1ef618a3768cc114b6fae4099af95df87654a04 (diff) | |
PPC: booke206: Check for min/max TLB entry size
When setting a TLB entry, we need to check if the TLB we're putting it in
actually supports the given size. According to the 2.06 PowerPC ISA, a
value that's out of range can either be redefined to something implementation
dependent or we can raise an illegal opcode exception. We do the latter.
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc')
| -rw-r--r-- | target-ppc/op_helper.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c index 6339c9559f..3b197f2deb 100644 --- a/target-ppc/op_helper.c +++ b/target-ppc/op_helper.c @@ -4228,6 +4228,7 @@ void helper_booke206_tlbwe(void) { uint32_t tlbncfg, tlbn; ppcmas_tlb_t *tlb; + uint32_t size_tlb, size_ps; switch (env->spr[SPR_BOOKE_MAS0] & MAS0_WQ_MASK) { case MAS0_WQ_ALWAYS: @@ -4259,6 +4260,16 @@ void helper_booke206_tlbwe(void) tlb = booke206_cur_tlb(env); + /* check that we support the targeted size */ + size_tlb = (env->spr[SPR_BOOKE_MAS1] & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; + size_ps = booke206_tlbnps(env, tlbn); + if ((env->spr[SPR_BOOKE_MAS1] & MAS1_VALID) && (tlbncfg & TLBnCFG_AVAIL) && + !(size_ps & (1 << size_tlb))) { + helper_raise_exception_err(POWERPC_EXCP_PROGRAM, + POWERPC_EXCP_INVAL | + POWERPC_EXCP_INVAL_INVAL); + } + if (msr_gs) { cpu_abort(env, "missing HV implementation\n"); } |