diff options
| -rw-r--r-- | target-mips/cpu.h | 11 | ||||
| -rw-r--r-- | target-mips/helper.c | 11 | ||||
| -rw-r--r-- | target-mips/op_helper.c | 8 |
3 files changed, 29 insertions, 1 deletions
diff --git a/target-mips/cpu.h b/target-mips/cpu.h index 91e781e26a..13f3a48198 100644 --- a/target-mips/cpu.h +++ b/target-mips/cpu.h @@ -30,6 +30,10 @@ struct r4k_tlb_t { uint_fast16_t V1:1; uint_fast16_t D0:1; uint_fast16_t D1:1; + uint_fast16_t XI0:1; + uint_fast16_t XI1:1; + uint_fast16_t RI0:1; + uint_fast16_t RI1:1; target_ulong PFN[2]; }; @@ -229,6 +233,13 @@ struct CPUMIPSState { #define CP0VPEOpt_DWX0 0 target_ulong CP0_EntryLo0; target_ulong CP0_EntryLo1; +#if defined(TARGET_MIPS64) +# define CP0EnLo_RI 63 +# define CP0EnLo_XI 62 +#else +# define CP0EnLo_RI 31 +# define CP0EnLo_XI 30 +#endif target_ulong CP0_Context; target_ulong CP0_KScratch[MIPS_KSCRATCH_NUM]; int32_t CP0_PageMask; diff --git a/target-mips/helper.c b/target-mips/helper.c index 1c9e69d8f4..49187a3d08 100644 --- a/target-mips/helper.c +++ b/target-mips/helper.c @@ -27,6 +27,8 @@ #include "sysemu/kvm.h" enum { + TLBRET_XI = -6, + TLBRET_RI = -5, TLBRET_DIRTY = -4, TLBRET_INVALID = -3, TLBRET_NOMATCH = -2, @@ -85,8 +87,15 @@ int r4k_map_address (CPUMIPSState *env, hwaddr *physical, int *prot, /* TLB match */ int n = !!(address & mask & ~(mask >> 1)); /* Check access rights */ - if (!(n ? tlb->V1 : tlb->V0)) + if (!(n ? tlb->V1 : tlb->V0)) { return TLBRET_INVALID; + } + if (rw == MMU_INST_FETCH && (n ? tlb->XI1 : tlb->XI0)) { + return TLBRET_XI; + } + if (rw == MMU_DATA_LOAD && (n ? tlb->RI1 : tlb->RI0)) { + return TLBRET_RI; + } if (rw != MMU_DATA_STORE || (n ? tlb->D1 : tlb->D0)) { *physical = tlb->PFN[n] | (address & (mask >> 1)); *prot = PAGE_READ; diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c index 9ec548cc02..582c84e1a4 100644 --- a/target-mips/op_helper.c +++ b/target-mips/op_helper.c @@ -1849,10 +1849,14 @@ static void r4k_fill_tlb(CPUMIPSState *env, int idx) tlb->V0 = (env->CP0_EntryLo0 & 2) != 0; tlb->D0 = (env->CP0_EntryLo0 & 4) != 0; tlb->C0 = (env->CP0_EntryLo0 >> 3) & 0x7; + tlb->XI0 = (env->CP0_EntryLo0 >> CP0EnLo_XI) & 1; + tlb->RI0 = (env->CP0_EntryLo0 >> CP0EnLo_RI) & 1; tlb->PFN[0] = (env->CP0_EntryLo0 >> 6) << 12; tlb->V1 = (env->CP0_EntryLo1 & 2) != 0; tlb->D1 = (env->CP0_EntryLo1 & 4) != 0; tlb->C1 = (env->CP0_EntryLo1 >> 3) & 0x7; + tlb->XI1 = (env->CP0_EntryLo1 >> CP0EnLo_XI) & 1; + tlb->RI1 = (env->CP0_EntryLo1 >> CP0EnLo_RI) & 1; tlb->PFN[1] = (env->CP0_EntryLo1 >> 6) << 12; } @@ -1964,8 +1968,12 @@ void r4k_helper_tlbr(CPUMIPSState *env) env->CP0_EntryHi = tlb->VPN | tlb->ASID; env->CP0_PageMask = tlb->PageMask; env->CP0_EntryLo0 = tlb->G | (tlb->V0 << 1) | (tlb->D0 << 2) | + ((target_ulong)tlb->RI0 << CP0EnLo_RI) | + ((target_ulong)tlb->XI0 << CP0EnLo_XI) | (tlb->C0 << 3) | (tlb->PFN[0] >> 6); env->CP0_EntryLo1 = tlb->G | (tlb->V1 << 1) | (tlb->D1 << 2) | + ((target_ulong)tlb->RI1 << CP0EnLo_RI) | + ((target_ulong)tlb->XI1 << CP0EnLo_XI) | (tlb->C1 << 3) | (tlb->PFN[1] >> 6); } |