diff options
| author | Leon Alrae <leon.alrae@imgtec.com> | 2014-07-07 11:23:57 +0100 |
|---|---|---|
| committer | Leon Alrae <leon.alrae@imgtec.com> | 2014-11-03 11:48:34 +0000 |
| commit | 9f6bcedba61927438000fb94b0706c22dfb87eaa (patch) | |
| tree | 7db9f03e482cb42e224cbccad0d843c24206ca02 /target-mips/helper.c | |
| parent | 55e9409366c5b7954a5dfb3efec9b191c238dd12 (diff) | |
target-mips: distinguish between data load and instruction fetch
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Yongbok Kim <yongbok.kim@imgtec.com>
Diffstat (limited to 'target-mips/helper.c')
| -rw-r--r-- | target-mips/helper.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/target-mips/helper.c b/target-mips/helper.c index fe16820885..1c9e69d8f4 100644 --- a/target-mips/helper.c +++ b/target-mips/helper.c @@ -87,7 +87,7 @@ int r4k_map_address (CPUMIPSState *env, hwaddr *physical, int *prot, /* Check access rights */ if (!(n ? tlb->V1 : tlb->V0)) return TLBRET_INVALID; - if (rw == 0 || (n ? tlb->D1 : tlb->D0)) { + if (rw != MMU_DATA_STORE || (n ? tlb->D1 : tlb->D0)) { *physical = tlb->PFN[n] | (address & (mask >> 1)); *prot = PAGE_READ; if (n ? tlb->D1 : tlb->D0) @@ -237,25 +237,28 @@ static void raise_mmu_exception(CPUMIPSState *env, target_ulong address, case TLBRET_BADADDR: /* Reference to kernel address from user mode or supervisor mode */ /* Reference to supervisor address from user mode */ - if (rw) + if (rw == MMU_DATA_STORE) { exception = EXCP_AdES; - else + } else { exception = EXCP_AdEL; + } break; case TLBRET_NOMATCH: /* No TLB match for a mapped address */ - if (rw) + if (rw == MMU_DATA_STORE) { exception = EXCP_TLBS; - else + } else { exception = EXCP_TLBL; + } error_code = 1; break; case TLBRET_INVALID: /* TLB match with no valid bit */ - if (rw) + if (rw == MMU_DATA_STORE) { exception = EXCP_TLBS; - else + } else { exception = EXCP_TLBL; + } break; case TLBRET_DIRTY: /* TLB match but 'D' bit is cleared */ @@ -312,8 +315,6 @@ int mips_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw, qemu_log("%s pc " TARGET_FMT_lx " ad %" VADDR_PRIx " rw %d mmu_idx %d\n", __func__, env->active_tc.PC, address, rw, mmu_idx); - rw &= 1; - /* data access */ #if !defined(CONFIG_USER_ONLY) /* XXX: put correct access by using cpu_restore_state() @@ -347,8 +348,6 @@ hwaddr cpu_mips_translate_address(CPUMIPSState *env, target_ulong address, int r int access_type; int ret = 0; - rw &= 1; - /* data access */ access_type = ACCESS_INT; ret = get_physical_address(env, &physical, &prot, |