scc

 1#include <stdio.h>
 2#include <stdlib.h>
 3#include <string.h>
 4
 5#include <scc/mach.h>
 6
 7#include "libmach.h"
 8
 9static int
10matchseg(Map *map, Mapsec *msec, FILE *fp)
11{
12	unsigned long long o, e, mo, me;
13	Section *seg;
14	Mapsec *mseg, **v;
15
16	mo = msec->sec.load;
17	me =  mo + msec->sec.size;
18
19	if ((msec->sec.flags & SLOAD) == 0)
20		return 0;
21
22	for (mseg = map->seg; mseg < &map->seg[map->nseg]; ++mseg) {
23		if (mseg->fp != fp)
24			continue;
25		o = mseg->sec.load;
26		e = o + mseg->sec.size;
27		if (mo >= o && me <= e) {
28			v = realloc(mseg->child, sizeof(Mapsec *) * (mseg->nchild+1));
29			if (!v)
30				return -1;
31			mseg->child = v;
32			v[mseg->nchild++] = msec;
33		}
34	}
35
36	return 0;
37}
38
39int
40mapsec(Map *map, Section *sec, FILE *fp, long fsiz)
41{
42	int n;
43	char *s;
44	Mapsec *msec, *mp;
45
46	mp = NULL;
47	n = map->nsec;
48	for (msec = map->sec; n--; msec++) {
49		s = msec->sec.name;
50		if (s && !strcmp(s, sec->name))
51			goto found;
52		if (!mp && !msec->used)
53			mp = msec;
54	}
55
56	if (mp) {
57		msec = mp;
58		goto found;
59	}
60
61	if ((map = remap(map, map->nsec+1, map->nseg)) == NULL)
62		return -1;
63	msec = &map->sec[map->nsec-1];
64
65found:
66	msec->used = 1;
67	msec->sec = *sec;
68	msec->fp = fp,
69	msec->fsiz = fsiz;
70
71	return matchseg(map, msec, fp);
72}