diff options
Diffstat (limited to 'target-mips/op_helper.c')
| -rw-r--r-- | target-mips/op_helper.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c index dcd44c4e55..8ec1bef7d0 100644 --- a/target-mips/op_helper.c +++ b/target-mips/op_helper.c @@ -889,6 +889,16 @@ target_ulong helper_mfc0_lladdr(CPUMIPSState *env) return (int32_t)(env->lladdr >> env->CP0_LLAddr_shift); } +target_ulong helper_mfc0_maar(CPUMIPSState *env) +{ + return (int32_t) env->CP0_MAAR[env->CP0_MAARI]; +} + +target_ulong helper_mfhc0_maar(CPUMIPSState *env) +{ + return env->CP0_MAAR[env->CP0_MAARI] >> 32; +} + target_ulong helper_mfc0_watchlo(CPUMIPSState *env, uint32_t sel) { return (int32_t)env->CP0_WatchLo[sel]; @@ -955,6 +965,11 @@ target_ulong helper_dmfc0_lladdr(CPUMIPSState *env) return env->lladdr >> env->CP0_LLAddr_shift; } +target_ulong helper_dmfc0_maar(CPUMIPSState *env) +{ + return env->CP0_MAAR[env->CP0_MAARI]; +} + target_ulong helper_dmfc0_watchlo(CPUMIPSState *env, uint32_t sel) { return env->CP0_WatchLo[sel]; @@ -1578,6 +1593,36 @@ void helper_mtc0_lladdr(CPUMIPSState *env, target_ulong arg1) env->lladdr = (env->lladdr & ~mask) | (arg1 & mask); } +#define MTC0_MAAR_MASK(env) \ + ((0x1ULL << 63) | ((env->PAMask >> 4) & ~0xFFFull) | 0x3) + +void helper_mtc0_maar(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_MAAR[env->CP0_MAARI] = arg1 & MTC0_MAAR_MASK(env); +} + +void helper_mthc0_maar(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_MAAR[env->CP0_MAARI] = + (((uint64_t) arg1 << 32) & MTC0_MAAR_MASK(env)) | + (env->CP0_MAAR[env->CP0_MAARI] & 0x00000000ffffffffULL); +} + +void helper_mtc0_maari(CPUMIPSState *env, target_ulong arg1) +{ + int index = arg1 & 0x3f; + if (index == 0x3f) { + /* Software may write all ones to INDEX to determine the + maximum value supported. */ + env->CP0_MAARI = MIPS_MAAR_MAX - 1; + } else if (index < MIPS_MAAR_MAX) { + env->CP0_MAARI = index; + } + /* Other than the all ones, if the + value written is not supported, then INDEX is unchanged + from its previous value. */ +} + void helper_mtc0_watchlo(CPUMIPSState *env, target_ulong arg1, uint32_t sel) { /* Watch exceptions for instructions, data loads, data stores |