motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 15:53:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

replay: introduce icount event

Browse source 
This patch adds icount event to the replay subsystem. This event corresponds
to execution of several instructions and used to synchronize input events
in the replay phase.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162354.8676.31351.stgit@PASHA-ISP.def.inno>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Pavel Dovgalyuk 2015-09-17 19:23:54 +03:00 • committed by Paolo Bonzini
parent c16861ef1b
commit 26bc60ac82
4 changed files with 85 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

24
replay/replay-internal.c
View file

@ -10,6 +10,7 @@
*/
#include "qemu-common.h"
#include "sysemu/replay.h"
#include "replay-internal.h"
#include "qemu/error-report.h"
#include "sysemu/sysemu.h"
@ -36,6 +37,7 @@ void replay_put_byte(uint8_t byte)
void replay_put_event(uint8_t event)
{
assert(event < EVENT_COUNT);
replay_put_byte(event);
}
@ -149,8 +151,15 @@ void replay_fetch_data_kind(void)
if (replay_file) {
if (!replay_has_unread_data) {
replay_data_kind = replay_get_byte();
if (replay_data_kind == EVENT_INSTRUCTION) {
replay_state.instructions_count = replay_get_dword();
}
replay_check_error();
replay_has_unread_data = 1;
if (replay_data_kind >= EVENT_COUNT) {
error_report("Replay: unknown event kind %d", replay_data_kind);
exit(1);
}
}
}
}
@ -180,3 +189,18 @@ void replay_mutex_unlock(void)
{
qemu_mutex_unlock(&lock);
}
/*! Saves cached instructions. */
void replay_save_instructions(void)
{
if (replay_file && replay_mode == REPLAY_MODE_RECORD) {
replay_mutex_lock();
int diff = (int)(replay_get_current_step() - replay_state.current_step);
if (diff > 0) {
replay_put_event(EVENT_INSTRUCTION);
replay_put_dword(diff);
replay_state.current_step += diff;
}
replay_mutex_unlock();
}
}