1992/0625/port/devboot.c (diff list | history)

1992/0522/sys/src/9/port/devboot.c:76,83 – 1992/0625/sys/src/9/port/devboot.c:76,94 (short | long | prev | next)
1991/0411		bootread(Chan *c, void *buf, long n, ulong offset)
1990/0424		{
1990/1127		switch(c->qid.path & ~CHDIR){
1992/0625
1990/0424		case Qdir: return devdirread(c, buf, n, bootdir, NBOOT, devgen);
1992/0625		case Qmem: /* kernel memory */ if(offset>=KZERO && offset<KZERO+conf.npage*BY2PG){ if(offset+n > KZERO+conf.npage*BY2PG) n = KZERO+conf.npage*BY2PG - offset; memmove(buf, (char*)offset, n); return n; } error(Ebadarg);
1990/0424		}
1990/11211		error(Egreg);
1992/0522/sys/src/9/port/devboot.c:93,105 – 1992/0625/sys/src/9/port/devboot.c:104,114
1990/0424		case Qmem:
1991/1206		/* kernel memory */
1991/0411		if(offset>=KZERO && offset<KZERO+conf.npage*BY2PG){
1991/1206		/* print("%ux, %d\n", c->offset, n);/**/
1991/0411		if(offset+n > KZERO+conf.npage*BY2PG) n = KZERO+conf.npage*BY2PG - offset; memmove((char*)offset, buf, n);
1990/0424		return n; }
1991/0411		print("bootwrite: bad addr %lux\n", offset);
1990/11211		error(Ebadarg);
1990/0424		case Qboot:
1992/0522/sys/src/9/port/devboot.c:107,113 – 1992/0625/sys/src/9/port/devboot.c:116,121
1990/0424		splhi(); gotopc(pc); }
1990/1127		print("bootwrite: bad path %d\n", c->qid.path);
1990/11211		error(Ebadarg);
1992/0522		return 0; /* not reached */
1990/0424		}