C++ (Cpp) kernel_getsp Examples

Example #1

File: backtrace.c Project: bjayesh/chandra

void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth)
{
	unsigned long sp = regs->gpr[1];
	int first_frame = 1;

	/* We ditch the top stackframe so need to loop through an extra time */
	depth += 1;

	if (!user_mode(regs)) {
		while (depth--) {
			sp = kernel_getsp(sp, first_frame);
			if (!sp)
				break;
			first_frame = 0;
		}
	} else {
		pagefault_disable();
#ifdef CONFIG_PPC64
		if (!is_32bit_task()) {
			while (depth--) {
				sp = user_getsp64(sp, first_frame);
				if (!sp)
					break;
				first_frame = 0;
			}
			pagefault_enable();
			return;
		}
#endif

		while (depth--) {
			sp = user_getsp32(sp, first_frame);
			if (!sp)
				break;
			first_frame = 0;
		}
		pagefault_enable();
	}
}

Example #2

File: backtrace.c Project: jakev/CobraDroidBeta

void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth)
{
	unsigned long sp = regs->gpr[1];
	int first_frame = 1;

	/* We ditch the top stackframe so need to loop through an extra time */
	depth += 1;

	if (!user_mode(regs)) {
		while (depth--) {
			sp = kernel_getsp(sp, first_frame);
			if (!sp)
				break;
			first_frame = 0;
		}
	} else {
#ifdef CONFIG_PPC64
		if (!test_thread_flag(TIF_32BIT)) {
			while (depth--) {
				sp = user_getsp64(sp, first_frame);
				if (!sp)
					break;
				first_frame = 0;
			}

			return;
		}
#endif

		while (depth--) {
			sp = user_getsp32(sp, first_frame);
			if (!sp)
				break;
			first_frame = 0;
		}
	}
}