shithub: riscv

ref: 457ba087b13a881b013940f6e54c09566ec10ed1
dir: /sys/src/libc/power/notejmp.c/

View raw version 
#include <u.h>
#include <libc.h>
#include <ureg.h>

int	__noterestore(void);

void
notejmp(void *vr, jmp_buf j, int ret)
{
	struct Ureg *r = vr;

	/*
	 * song and dance to get around the kernel smashing r3 in noted
	 */
	r->r4 = ret;
	if(ret == 0)
		r->r4 = 1;
	r->r5 = j[JMPBUFPC] - JMPBUFDPC;
	r->pc = (ulong)__noterestore;
	r->sp = j[JMPBUFSP];
	noted(NCONT);
}