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target-arm: Override do_interrupt for ARMv7-M profile

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Enable ARMCPUInfo to specify a custom class_init functions.
Introduce arm_v7m_class_init() and use it for "cortex-m3" model.

Instead of forwarding from arm_cpu_do_interrupt() to do_interrupt_v7m(),
override CPUClass::do_interrupt with arm_v7m_cpu_do_interrupt()
in arm_v7m_class_init().

Acked-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Andreas Färber 2013-02-02 12:33:14 +01:00
parent 97a8ea5a3a
commit e6f010cc27
3 changed files with 19 additions and 6 deletions
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10
target-arm/helper.c
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@ -1725,8 +1725,10 @@ static void do_v7m_exception_exit(CPUARMState *env)
pointer. */
}
static void do_interrupt_v7m(CPUARMState *env)
void arm_v7m_cpu_do_interrupt(CPUState *cs)
{
ARMCPU *cpu = ARM_CPU(cs);
CPUARMState *env = &cpu->env;
uint32_t xpsr = xpsr_read(env);
uint32_t lr;
uint32_t addr;
@ -1811,10 +1813,8 @@ void arm_cpu_do_interrupt(CPUState *cs)
int new_mode;
uint32_t offset;
if (IS_M(env)) {
do_interrupt_v7m(env);
return;
}
assert(!IS_M(env));
/* TODO: Vectored interrupt controller. */
switch (env->exception_index) {
case EXCP_UDEF: