diff options
| author | Edgar E. Iglesias <edgar.iglesias@petalogix.com> | 2011-08-25 16:41:18 +1000 |
|---|---|---|
| committer | Edgar E. Iglesias <edgar.iglesias@gmail.com> | 2011-08-25 22:44:25 +0200 |
| commit | 97b833c5df820acc5c7b3e63c84059857c115c45 (patch) | |
| tree | 7d0faccb05b11273d2c3c93cead9f3f5f7d70771 /target-microblaze | |
| parent | 01e0451a08e0afb9af04783c320d70084cf4e574 (diff) | |
microblaze: Make the MSR PVR bit non writable
Instead of hardcoding it to 1.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
Diffstat (limited to 'target-microblaze')
| -rw-r--r-- | target-microblaze/translate.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/target-microblaze/translate.c b/target-microblaze/translate.c index 1a862d31e3..15f1fe5cf0 100644 --- a/target-microblaze/translate.c +++ b/target-microblaze/translate.c @@ -424,10 +424,15 @@ static inline void msr_read(DisasContext *dc, TCGv d) static inline void msr_write(DisasContext *dc, TCGv v) { + TCGv t; + + t = tcg_temp_new(); dc->cpustate_changed = 1; - tcg_gen_mov_tl(cpu_SR[SR_MSR], v); - /* PVR, we have a processor version register. */ - tcg_gen_ori_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], (1 << 10)); + /* PVR bit is not writable. */ + tcg_gen_andi_tl(t, v, ~(1 << 10)); + tcg_gen_andi_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], (1 << 10)); + tcg_gen_or_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], v); + tcg_temp_free(t); } static void dec_msr(DisasContext *dc) |