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| author | Michael Walle <michael@walle.cc> | 2018-01-09 18:01:13 +0100 |
|---|---|---|
| committer | Michael Walle <michael@walle.cc> | 2018-05-21 13:37:12 +0200 |
| commit | 81e9cbd0ca1131012b058df6804b1f626a6b730c (patch) | |
| tree | d05f0defac027a288381b82ac57520784bb944a0 /target | |
| parent | dfa93a0b6ef51fd8e0285a9991704b51cf884c33 (diff) | |
| download | qemu-81e9cbd0ca1131012b058df6804b1f626a6b730c.zip qemu-81e9cbd0ca1131012b058df6804b1f626a6b730c.tar.gz qemu-81e9cbd0ca1131012b058df6804b1f626a6b730c.tar.bz2 | |
lm32: take BQL before writing IP/IM register
Writing to these registers may raise an interrupt request. Actually,
this prevents the milkymist board from starting.
Cc: qemu-stable@nongnu.org
Signed-off-by: Michael Walle <michael@walle.cc>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Diffstat (limited to 'target')
| -rw-r--r-- | target/lm32/op_helper.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/target/lm32/op_helper.c b/target/lm32/op_helper.c index 577f830..234d55e 100644 --- a/target/lm32/op_helper.c +++ b/target/lm32/op_helper.c @@ -102,12 +102,16 @@ void HELPER(wcsr_dc)(CPULM32State *env, uint32_t dc) void HELPER(wcsr_im)(CPULM32State *env, uint32_t im) { + qemu_mutex_lock_iothread(); lm32_pic_set_im(env->pic_state, im); + qemu_mutex_unlock_iothread(); } void HELPER(wcsr_ip)(CPULM32State *env, uint32_t im) { + qemu_mutex_lock_iothread(); lm32_pic_set_ip(env->pic_state, im); + qemu_mutex_unlock_iothread(); } void HELPER(wcsr_jtx)(CPULM32State *env, uint32_t jtx) |