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Redirect cpu_interrupt to callback handler 

This allows to override the interrupt handling of QEMU in system mode.
KVM will make use of it to set a specialized handler.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Jan Kiszka 2011-04-13 01:32:56 +02:00 committed by Marcelo Tosatti
parent 97ffbd8d9d
commit ec6959d046
2 changed files with 16 additions and 2 deletions
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14
cpu-all.h
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@ -799,7 +799,19 @@ extern CPUState *cpu_single_env;
#define CPU_INTERRUPT_SIPI 0x800 /* SIPI pending. */
#define CPU_INTERRUPT_MCE 0x1000 /* (x86 only) MCE pending. */
void cpu_interrupt(CPUState *s, int mask);
#ifndef CONFIG_USER_ONLY
typedef void (*CPUInterruptHandler)(CPUState *, int);
extern CPUInterruptHandler cpu_interrupt_handler;
static inline void cpu_interrupt(CPUState *s, int mask)
{
cpu_interrupt_handler(s, mask);
}
#else /* USER_ONLY */
void cpu_interrupt(CPUState *env, int mask);
#endif /* USER_ONLY */
void cpu_reset_interrupt(CPUState *env, int mask);
void cpu_exit(CPUState *s);

4
exec.c
View File

@ -1631,7 +1631,7 @@ static void cpu_unlink_tb(CPUState *env)
#ifndef CONFIG_USER_ONLY
/* mask must never be zero, except for A20 change call */
void cpu_interrupt(CPUState *env, int mask)
static void tcg_handle_interrupt(CPUState *env, int mask)
{
int old_mask;
@ -1658,6 +1658,8 @@ void cpu_interrupt(CPUState *env, int mask)
}
}
CPUInterruptHandler cpu_interrupt_handler = tcg_handle_interrupt;
#else /* CONFIG_USER_ONLY */
void cpu_interrupt(CPUState *env, int mask)