ref: aa57098a3ca539c91d48d3d053ef0bd4cf0b3cce
dir: /sys/src/libc/power/notejmp.c/
#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);
}