* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
-#include "config.h"
+#include "qemu/osdep.h"
#include "cpu.h"
#include "sysemu/cpus.h"
+#include "exec/exec-all.h"
#include "exec/memory-internal.h"
-bool exit_request;
-CPUState *tcg_current_cpu;
-
-/* exit the current TB from a signal handler. The host registers are
- restored in a state compatible with the CPU emulator
- */
-#if defined(CONFIG_SOFTMMU)
-void cpu_resume_from_signal(CPUState *cpu, void *puc)
+/* exit the current TB, but without causing any exception to be raised */
+void cpu_loop_exit_noexc(CPUState *cpu)
{
/* XXX: restore cpu registers saved in host registers */
siglongjmp(cpu->jmp_env, 1);
}
-void cpu_reload_memory_map(CPUState *cpu)
+#if defined(CONFIG_SOFTMMU)
+void cpu_reloading_memory_map(void)
{
- AddressSpaceDispatch *d;
-
if (qemu_in_vcpu_thread()) {
/* The guest can in theory prolong the RCU critical section as long
* as it feels like. The major problem with this is that because it
* part of this callback might become unnecessary.)
*
* This pair matches cpu_exec's rcu_read_lock()/rcu_read_unlock(), which
- * only protects cpu->as->dispatch. Since we reload it below, we can
- * split the critical section.
+ * only protects cpu->as->dispatch. Since we know our caller is about
+ * to reload it, it's safe to split the critical section.
*/
rcu_read_unlock();
rcu_read_lock();
}
-
- /* The CPU and TLB are protected by the iothread lock. */
- d = atomic_rcu_read(&cpu->as->dispatch);
- cpu->memory_dispatch = d;
- tlb_flush(cpu, 1);
}
#endif
void cpu_loop_exit(CPUState *cpu)
{
- cpu->current_tb = NULL;
siglongjmp(cpu->jmp_env, 1);
}
if (pc) {
cpu_restore_state(cpu, pc);
}
- cpu->current_tb = NULL;
siglongjmp(cpu->jmp_env, 1);
}
+
+void cpu_loop_exit_atomic(CPUState *cpu, uintptr_t pc)
+{
+ cpu->exception_index = EXCP_ATOMIC;
+ cpu_loop_exit_restore(cpu, pc);
+}