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target/avr: Only execute one interrupt at a time

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We cannot deliver two interrupts simultaneously;
the first interrupt handler must execute first.

Reviewed-by: Michael Rolnik <mrolnik@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-08-26 13:35:52 -07:00
parent 9e1b2375da
commit cecaad5401
1 changed files with 3 additions and 6 deletions
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9
target/avr/helper.c
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@ -28,7 +28,6 @@
bool avr_cpu_exec_interrupt(CPUState *cs, int interrupt_request) bool avr_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
{ {
bool ret = false;
AVRCPU *cpu = AVR_CPU(cs); AVRCPU *cpu = AVR_CPU(cs);
CPUAVRState *env = &cpu->env; CPUAVRState *env = &cpu->env;
@ -38,8 +37,7 @@ bool avr_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
avr_cpu_do_interrupt(cs); avr_cpu_do_interrupt(cs);
cs->interrupt_request &= ~CPU_INTERRUPT_RESET; cs->interrupt_request &= ~CPU_INTERRUPT_RESET;
return true;
ret = true;
} }
} }
if (interrupt_request & CPU_INTERRUPT_HARD) { if (interrupt_request & CPU_INTERRUPT_HARD) {
@ -52,11 +50,10 @@ bool avr_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
if (!env->intsrc) { if (!env->intsrc) {
cs->interrupt_request &= ~CPU_INTERRUPT_HARD; cs->interrupt_request &= ~CPU_INTERRUPT_HARD;
} }
return true;
ret = true;
} }
} }
return ret; return false;
} }
void avr_cpu_do_interrupt(CPUState *cs) void avr_cpu_do_interrupt(CPUState *cs)