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target-arm: Use cpu_exec_interrupt qom hook

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Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-id: 1410626734-3804-15-git-send-email-rth@twiddle.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2014-09-13 09:45:25 -07:00 • committed by Peter Maydell
parent d8bb915972
commit e8925712e6
4 changed files with 36 additions and 23 deletions
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23
cpu-exec.c
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@ -562,29 +562,6 @@ int cpu_exec(CPUArchState *env)
}
}
}
#elif defined(TARGET_ARM)
if (interrupt_request & CPU_INTERRUPT_FIQ
&& !(env->daif & PSTATE_F)) {
cpu->exception_index = EXCP_FIQ;
cc->do_interrupt(cpu);
next_tb = 0;
}
/* ARMv7-M interrupt return works by loading a magic value
into the PC. On real hardware the load causes the
return to occur. The qemu implementation performs the
jump normally, then does the exception return when the
CPU tries to execute code at the magic address.
This will cause the magic PC value to be pushed to
the stack if an interrupt occurred at the wrong time.
We avoid this by disabling interrupts when
pc contains a magic address. */
if (interrupt_request & CPU_INTERRUPT_HARD
&& !(env->daif & PSTATE_I)
&& (!IS_M(env) || env->regs[15] < 0xfffffff0)) {
cpu->exception_index = EXCP_IRQ;
cc->do_interrupt(cpu);
next_tb = 0;
}
#endif
/* The target hook has 3 exit conditions:
False when the interrupt isn't processed,