diff options
Diffstat (limited to 'target/mips/tcg/sysemu')
| -rw-r--r-- | target/mips/tcg/sysemu/cp0_helper.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/target/mips/tcg/sysemu/cp0_helper.c b/target/mips/tcg/sysemu/cp0_helper.c index aae2af6ecc..5da1124589 100644 --- a/target/mips/tcg/sysemu/cp0_helper.c +++ b/target/mips/tcg/sysemu/cp0_helper.c @@ -1396,10 +1396,11 @@ void helper_mtc0_watchlo(CPUMIPSState *env, target_ulong arg1, uint32_t sel) void helper_mtc0_watchhi(CPUMIPSState *env, target_ulong arg1, uint32_t sel) { uint64_t mask = 0x40000FF8 | (env->CP0_EntryHi_ASID_mask << CP0WH_ASID); + uint64_t m_bit = env->CP0_WatchHi[sel] & (1 << CP0WH_M); /* read-only */ if ((env->CP0_Config5 >> CP0C5_MI) & 1) { mask |= 0xFFFFFFFF00000000ULL; /* MMID */ } - env->CP0_WatchHi[sel] = arg1 & mask; + env->CP0_WatchHi[sel] = m_bit | (arg1 & mask); env->CP0_WatchHi[sel] &= ~(env->CP0_WatchHi[sel] & arg1 & 0x7); } |