1992/0114/port/segment.c (diff list | history)

1992/0111/sys/src/9/port/segment.c:57,63 – 1992/0114/sys/src/9/port/segment.c:57,63 (short | long | prev | next)
1991/0705		Segment *s; if(size > (SEGMAPSIZE*PTEPERTAB)) errors("segment too large");
1992/0114		error(Enovmem);
1991/0705		for(;;) { lock(&segalloc);
1992/0111/sys/src/9/port/segment.c:335,341 – 1992/0114/sys/src/9/port/segment.c:335,341
1991/0705		s = u->p->seg[seg]; if(s == 0) errors("no segment");
1992/0114		error(Ebadarg);
1991/0705		if(addr == 0) return s->base;
1992/0111/sys/src/9/port/segment.c:346,352 – 1992/0114/sys/src/9/port/segment.c:346,352
1991/0705		/* We may start with the bss overlapping the data */ if(seg != BSEG || u->p->seg[DSEG] == 0 || addr < u->p->seg[DSEG]->base) { qunlock(&s->lk);
1991/1125		errors("addr below segment");
1992/0114		error(Enovmem);
1991/1125		}
1991/0705		addr = s->base; }
1992/0111/sys/src/9/port/segment.c:371,377 – 1992/0114/sys/src/9/port/segment.c:371,377
1991/0705		if(newtop >= ns->base && newtop < ns->top) { qunlock(&s->lk); pprint("segments overlap\n"); error(Esegaddr);
1992/0114		error(Enovmem);
1991/0705		} }
1992/0111/sys/src/9/port/segment.c:424,430 – 1992/0114/sys/src/9/port/segment.c:424,430
1991/0705
1991/1115		USED(p);
1991/0705		if(va&KZERO) /* BUG: Only ok for now */ errors("bad virtual address");
1992/0114		error(Ebadarg);
1991/0705		validaddr((ulong)name, 1, 0); vmemchr(name, 0, ~0);
1992/0111/sys/src/9/port/segment.c:434,440 – 1992/0114/sys/src/9/port/segment.c:434,440
1991/0705		break; if(sno == NSEG) errors("no per process segments");
1992/0114		error(Enovmem);
1991/0705		va = va&~(BY2PG-1); len = PGROUND(len);
1992/0111/sys/src/9/port/segment.c:445,451 – 1992/0114/sys/src/9/port/segment.c:445,451
1991/0705		continue;
1991/0803		if((newtop > ns->base && newtop <= ns->top) || (va >= ns->base && va < ns->top))
1991/0705		errors("segments overlap");
1992/0114		error(Enovmem);
1991/0705		}
1991/0731		for(ps = physseg; ps->name; ps++)
1992/0111/sys/src/9/port/segment.c:452,461 – 1992/0114/sys/src/9/port/segment.c:452,461
1991/0705		if(strcmp(name, ps->name) == 0) goto found; errors("bad segment name");
1992/0114		error(Ebadarg);
1991/0705		found: if(len > ps->size) errors("segment too long");
1992/0114		error(Enovmem);
1991/0705		attr &= ~SG_TYPE; /* Turn off what we are not allowed */ attr |= ps->attr; /* Copy in defaults */
1992/0111/sys/src/9/port/segment.c:480,486 – 1992/0114/sys/src/9/port/segment.c:480,486
1991/0705		s = seg(u->p, arg[0], 1); if(s == 0) errors("bad segment address");
1992/0114		error(Ebadarg);
1991/0706		s->flushme = 1;
1991/0705