Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> writes:
So what's that SIGTRAP on exit from syscall in single-stepping mode for?
The trace exception is low priority exception that is executed after all other exceptions are processed. So if the cpu single steps over a trap insns, the trace exception processing is started when the trap exception processing is complete, which is just before the cpu starts executing the trap exception handler in the kernel. You want the SIGTRAP to be sent to the user process, so you have to delay sending it until the kernel returns to user space. Andreas. -- Andreas Schwab, schwab@xxxxxxxxxxxxxx GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different." -- To unsubscribe from this list: send the line "unsubscribe linux-m68k" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
