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qom: Add cpu_exec_interrupt hook

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Continuing the removal of ifdefs from cpu_exec.

Cc: Andreas Färber <afaerber@suse.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1410626734-3804-7-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 09:45:17 -07:00 committed by Peter Maydell
parent 774f0abeae
commit 9585db68c7
3 changed files with 17 additions and 5 deletions
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14
cpu-exec.c
View File

@ -676,8 +676,15 @@ int cpu_exec(CPUArchState *env)
next_tb = 0;
}
#endif
/* Don't use the cached interrupt_request value,
do_interrupt may have updated the EXITTB flag. */
/* The target hook has 3 exit conditions:
False when the interrupt isn't processed,
True when it is, and we should restart on a new TB,
and via longjmp via cpu_loop_exit. */
if (cc->cpu_exec_interrupt(cpu, interrupt_request)) {
next_tb = 0;
}
/* Don't use the cached interrupt_request value,
do_interrupt may have updated the EXITTB flag. */
if (cpu->interrupt_request & CPU_INTERRUPT_EXITTB) {
cpu->interrupt_request &= ~CPU_INTERRUPT_EXITTB;
/* ensure that no TB jump will be modified as
@ -783,10 +790,7 @@ int cpu_exec(CPUArchState *env)
* local variables as longjmp is marked 'noreturn'. */
cpu = current_cpu;
env = cpu->env_ptr;
#if !(defined(CONFIG_USER_ONLY) && \
(defined(TARGET_M68K) || defined(TARGET_PPC) || defined(TARGET_S390X)))
cc = CPU_GET_CLASS(cpu);
#endif
#ifdef TARGET_I386
x86_cpu = X86_CPU(cpu);
#endif

2
include/qom/cpu.h
View File

@ -101,6 +101,7 @@ struct TranslationBlock;
* @gdb_core_xml_file: File name for core registers GDB XML description.
* @cpu_exec_enter: Callback for cpu_exec preparation.
* @cpu_exec_exit: Callback for cpu_exec cleanup.
* @cpu_exec_interrupt: Callback for processing interrupts in cpu_exec.
*
* Represents a CPU family or model.
*/
@ -154,6 +155,7 @@ typedef struct CPUClass {
void (*cpu_exec_enter)(CPUState *cpu);
void (*cpu_exec_exit)(CPUState *cpu);
bool (*cpu_exec_interrupt)(CPUState *cpu, int interrupt_request);
} CPUClass;
#ifdef HOST_WORDS_BIGENDIAN

6
qom/cpu.c
View File

@ -206,6 +206,11 @@ static void cpu_common_noop(CPUState *cpu)
{
}
static bool cpu_common_exec_interrupt(CPUState *cpu, int int_req)
{
return false;
}
void cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
int flags)
{
@ -347,6 +352,7 @@ static void cpu_class_init(ObjectClass *klass, void *data)
k->debug_excp_handler = cpu_common_noop;
k->cpu_exec_enter = cpu_common_noop;
k->cpu_exec_exit = cpu_common_noop;
k->cpu_exec_interrupt = cpu_common_exec_interrupt;
dc->realize = cpu_common_realizefn;
/*
* Reason: CPUs still need special care by board code: wiring up