diff options
| author | Richard Henderson <rth@twiddle.net> | 2015-02-18 15:05:05 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2017-02-14 08:15:00 +1100 |
| commit | 6f7332ba713bc4d36f1078990c5a48618933d6c3 (patch) | |
| tree | 27342c4192a2343633e42c0eeec9d58f206d69f6 /target/openrisc/sys_helper.c | |
| parent | 24fc5c0feb0d8ed3367c6628c14ac3ba6ebcbb89 (diff) | |
target/openrisc: Represent MACHI:MACLO as a single unit
Significantly simplifies the implementation of the use of MAC.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target/openrisc/sys_helper.c')
| -rw-r--r-- | target/openrisc/sys_helper.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/target/openrisc/sys_helper.c b/target/openrisc/sys_helper.c index 4a59728964..9841a5bb27 100644 --- a/target/openrisc/sys_helper.c +++ b/target/openrisc/sys_helper.c @@ -120,6 +120,12 @@ void HELPER(mtspr)(CPUOpenRISCState *env, case TO_SPR(2, 1280) ... TO_SPR(2, 1407): /* ITLBW3MR 0-127 */ case TO_SPR(2, 1408) ... TO_SPR(2, 1535): /* ITLBW3TR 0-127 */ break; + case TO_SPR(5, 1): /* MACLO */ + env->mac = deposit64(env->mac, 0, 32, rb); + break; + case TO_SPR(5, 2): /* MACHI */ + env->mac = deposit64(env->mac, 32, 32, rb); + break; case TO_SPR(9, 0): /* PICMR */ env->picmr |= rb; break; @@ -245,6 +251,13 @@ target_ulong HELPER(mfspr)(CPUOpenRISCState *env, case TO_SPR(2, 1408) ... TO_SPR(2, 1535): /* ITLBW3TR 0-127 */ break; + case TO_SPR(5, 1): /* MACLO */ + return (uint32_t)env->mac; + break; + case TO_SPR(5, 2): /* MACHI */ + return env->mac >> 32; + break; + case TO_SPR(9, 0): /* PICMR */ return env->picmr; |