qemu/hw/xtensa
Max Filippov fa92bd4af7 target/xtensa: fix access to the INTERRUPT SR
INTERRUPT special register may be changed both by the core (by writing
to INTSET and INTCLEAR registers) and by external events (by triggering
and clearing HW IRQs). In MTTCG this state must be protected from
concurrent access, otherwise interrupts may be lost or spurious
interrupts may be detected.

Use atomic operations to change INTSET SR.
Fix wsr.intset so that it soesn't clear any bits.
Fix wsr.intclear so that it doesn't clear bit that corresponds to NMI.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2019-01-24 10:44:26 -08:00
..
bootparam.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
Makefile.objs hw/xtensa: extract xtensa_create_memory_regions 2018-01-11 09:31:26 -08:00
pic_cpu.c target/xtensa: fix access to the INTERRUPT SR 2019-01-24 10:44:26 -08:00
sim.c Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
xtensa_memory.c hw/xtensa: extract xtensa_create_memory_regions 2018-01-11 09:31:26 -08:00
xtensa_memory.h Clean up includes 2018-02-09 05:05:11 +01:00
xtfpga.c hw/xtensa: xtfpga: use core frequency 2019-01-24 10:44:25 -08:00