Sorry for my previous incomplete email
Hi,
I have another small question. Actually, I am implementing
hardware transactional memory support in QEMU. I have implemented the
following two helper functions functions in targer-i386/helper.c
void helper_StartTransaction()
void helper_CommitTransaction();
My application looks as follows.
int main()
{
__asm_volatile("mov %al %al"); //is detected in translation.c and helper_StartTransaction is called
//add the code here
__asm_volatile("mov %bl %bl"); //is detected in translation.c and helper_CommitTransaction is called
}
In
case a transaction fails, I detect it inside the code for
helper_CommitTransaction(), now I need to jump back to the start of transaction. I do it by using setjmp inside helper_StartTransaction and calling longjmp inside CommitTransaction, Code for the two helper functions is as follows
void helper_StartTransaction()
{
printf("StartTransaction Called\n");
if(setjmp(env->tm_jmp))
{
printf("Transaction restart\");
}
}
void helper_CommitTransaction()
{
printf("CommitTransaction Called\n");
longjmp(env->tm_jmp, 0);
}
But this prints "Transaction restart" once and then the program finishes. This means that commit transaction is not called the second time. Could you please tell me what am I doing wrong?
Regards,
Atif