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cpu: Make first_cpu and next_cpu CPUState

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Move next_cpu from CPU_COMMON to CPUState.
Move first_cpu variable to qom/cpu.h.

gdbstub needs to use CPUState::env_ptr for now.
cpu_copy() no longer needs to save and restore cpu_next.

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
[AF: Rebased, simplified cpu_copy()]
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Andreas Färber 2013-05-29 22:29:20 +02:00
parent 9b056fcc5b
commit 182735efaf
39 changed files with 266 additions and 234 deletions
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43
exec.c
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@ -69,7 +69,7 @@ static MemoryRegion io_mem_unassigned;
#endif
CPUArchState *first_cpu;
CPUState *first_cpu;
/* current CPU in the current thread. It is only valid inside
cpu_exec() */
DEFINE_TLS(CPUState *, current_cpu);
@ -351,27 +351,26 @@ const VMStateDescription vmstate_cpu_common = {
CPUState *qemu_get_cpu(int index)
{
CPUArchState *env = first_cpu;
CPUState *cpu = NULL;
CPUState *cpu = first_cpu;
while (env) {
cpu = ENV_GET_CPU(env);
while (cpu) {
if (cpu->cpu_index == index) {
break;
}
env = env->next_cpu;
cpu = cpu->next_cpu;
}
return env ? cpu : NULL;
return cpu;
}
void qemu_for_each_cpu(void (*func)(CPUState *cpu, void *data), void *data)
{
CPUArchState *env = first_cpu;
CPUState *cpu;
while (env) {
func(ENV_GET_CPU(env), data);
env = env->next_cpu;
cpu = first_cpu;
while (cpu) {
func(cpu, data);
cpu = cpu->next_cpu;
}
}
@ -379,17 +378,17 @@ void cpu_exec_init(CPUArchState *env)
{
CPUState *cpu = ENV_GET_CPU(env);
CPUClass *cc = CPU_GET_CLASS(cpu);
CPUArchState **penv;
CPUState **pcpu;
int cpu_index;
#if defined(CONFIG_USER_ONLY)
cpu_list_lock();
#endif
env->next_cpu = NULL;
penv = &first_cpu;
cpu->next_cpu = NULL;
pcpu = &first_cpu;
cpu_index = 0;
while (*penv != NULL) {
penv = &(*penv)->next_cpu;
while (*pcpu != NULL) {
pcpu = &(*pcpu)->next_cpu;
cpu_index++;
}
cpu->cpu_index = cpu_index;
@ -399,7 +398,7 @@ void cpu_exec_init(CPUArchState *env)
#ifndef CONFIG_USER_ONLY
cpu->thread_id = qemu_get_thread_id();
#endif
*penv = env;
*pcpu = cpu;
#if defined(CONFIG_USER_ONLY)
cpu_list_unlock();
#endif
@ -638,7 +637,6 @@ void cpu_abort(CPUArchState *env, const char *fmt, ...)
CPUArchState *cpu_copy(CPUArchState *env)
{
CPUArchState *new_env = cpu_init(env->cpu_model_str);
CPUArchState *next_cpu = new_env->next_cpu;
#if defined(TARGET_HAS_ICE)
CPUBreakpoint *bp;
CPUWatchpoint *wp;
@ -646,9 +644,6 @@ CPUArchState *cpu_copy(CPUArchState *env)
memcpy(new_env, env, sizeof(CPUArchState));
/* Preserve chaining. */
new_env->next_cpu = next_cpu;
/* Clone all break/watchpoints.
Note: Once we support ptrace with hw-debug register access, make sure
BP_CPU break/watchpoints are handled correctly on clone. */
@ -1757,12 +1752,14 @@ static void core_commit(MemoryListener *listener)
static void tcg_commit(MemoryListener *listener)
{
CPUArchState *env;
CPUState *cpu;
/* since each CPU stores ram addresses in its TLB cache, we must
reset the modified entries */
/* XXX: slow ! */
for(env = first_cpu; env != NULL; env = env->next_cpu) {
for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) {
CPUArchState *env = cpu->env_ptr;
tlb_flush(env, 1);
}
}