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target/ppc: introduce ppc_maybe_interrupt

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This new method will check if any pending interrupt was unmasked and
then call cpu_interrupt/cpu_reset_interrupt accordingly. Code that
raises/lowers or masks/unmasks interrupts should call this method to
keep CPU_INTERRUPT_HARD coherent with env->pending_interrupts.

Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20221021142156.4134411-2-matheus.ferst@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This commit is contained in:
Matheus Ferst 2022-10-21 11:21:54 -03:00 • committed by Daniel Henrique Barboza
parent 6a8e8188c3
commit 2fdedcbc69
10 changed files with 67 additions and 8 deletions
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7
hw/ppc/ppc.c
View file

@ -42,7 +42,6 @@ static void cpu_ppc_tb_start (CPUPPCState *env);
void ppc_set_irq(PowerPCCPU *cpu, int irq, int level)
{
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
unsigned int old_pending;
bool locked = false;
@ -57,19 +56,15 @@ void ppc_set_irq(PowerPCCPU *cpu, int irq, int level)
if (level) {
env->pending_interrupts |= irq;
cpu_interrupt(cs, CPU_INTERRUPT_HARD);
} else {
env->pending_interrupts &= ~irq;
if (env->pending_interrupts == 0) {
cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
}
}
if (old_pending != env->pending_interrupts) {
ppc_maybe_interrupt(env);
kvmppc_set_interrupt(cpu, irq, level);
}
trace_ppc_irq_set_exit(env, irq, level, env->pending_interrupts,
CPU(cpu)->interrupt_request);