static inline void copy_exception_handler()

in kernel/setup.c [44:74]

• 28 lines of code
• 2 McCabe index (conditional complexity)

static inline void copy_exception_handler(unsigned int addr)
{
	unsigned int start = (unsigned int) exception_handler_hook;
	volatile unsigned int tmp = 0;

	if (start == addr) {
		/* The CPU exception address already points to the handler. */
		return;
	}

	__asm__ __volatile__ (
		"ldw	%2,0(%0)\n"
		"stw	%2,0(%1)\n"
		"ldw	%2,4(%0)\n"
		"stw	%2,4(%1)\n"
		"ldw	%2,8(%0)\n"
		"stw	%2,8(%1)\n"
		"flushd	0(%1)\n"
		"flushd	4(%1)\n"
		"flushd	8(%1)\n"
		"flushi %1\n"
		"addi	%1,%1,4\n"
		"flushi %1\n"
		"addi	%1,%1,4\n"
		"flushi %1\n"
		"flushp\n"
		: /* no output registers */
		: "r" (start), "r" (addr), "r" (tmp)
		: "memory"
	);
}