diff options
Diffstat (limited to 'target-ppc/op_helper.c')
| -rw-r--r-- | target-ppc/op_helper.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c index 1f1fa09368..be4e539c2d 100644 --- a/target-ppc/op_helper.c +++ b/target-ppc/op_helper.c @@ -4260,6 +4260,12 @@ void helper_booke206_tlbwe(void) tlb = booke206_cur_tlb(env); + if (!tlb) { + helper_raise_exception_err(POWERPC_EXCP_PROGRAM, + POWERPC_EXCP_INVAL | + POWERPC_EXCP_INVAL_INVAL); + } + /* 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); @@ -4311,7 +4317,11 @@ void helper_booke206_tlbre(void) ppcmas_tlb_t *tlb = NULL; tlb = booke206_cur_tlb(env); - booke206_tlb_to_mas(env, tlb); + if (!tlb) { + env->spr[SPR_BOOKE_MAS1] = 0; + } else { + booke206_tlb_to_mas(env, tlb); + } } void helper_booke206_tlbsx(target_ulong address) @@ -4330,6 +4340,10 @@ void helper_booke206_tlbsx(target_ulong address) for (j = 0; j < ways; j++) { tlb = booke206_get_tlbm(env, i, address, j); + if (!tlb) { + continue; + } + if (ppcmas_tlb_check(env, tlb, &raddr, address, spid)) { continue; } @@ -4373,6 +4387,9 @@ static inline void booke206_invalidate_ea_tlb(CPUState *env, int tlbn, for (i = 0; i < ways; i++) { ppcmas_tlb_t *tlb = booke206_get_tlbm(env, tlbn, ea, i); + if (!tlb) { + continue; + } mask = ~(booke206_tlb_to_page_size(env, tlb) - 1); if (((tlb->mas2 & MAS2_EPN_MASK) == (ea & mask)) && !(tlb->mas1 & MAS1_IPROT)) { @@ -4453,6 +4470,9 @@ void helper_booke206_tlbilx3(target_ulong address) for (j = 0; j < ways; j++) { tlb = booke206_get_tlbm(env, i, address, j); + if (!tlb) { + continue; + } if ((ppcmas_tlb_check(env, tlb, NULL, address, pid) != 0) || (tlb->mas1 & MAS1_IPROT) || ((tlb->mas1 & MAS1_IND) != ind) || |