10 newmap(Map *map, int n)
14 size = sizeof(Map)+(n-1)*sizeof(struct segment);
18 map = realloc(map, size);
20 werrstr("out of memory: %r");
29 setmap(Map *map, int fd, uvlong b, uvlong e, vlong f, char *name)
35 for (i = 0; i < map->nsegs; i++)
36 if (!map->seg[i].inuse)
43 map->seg[i].inuse = 1;
44 map->seg[i].name = name;
57 snprint(buf, sizeof(buf), "/proc/%d/segment", pid);
61 n = read(fd, buf, sizeof(buf)-1);
64 if (strncmp(buf, "Stack", 5))
66 for (cp = buf+5; *cp && *cp == ' '; cp++)
73 while (*cp && *cp == ' ')
77 return strtoull(cp, 0, 16);
81 attachproc(int pid, int kflag, int corefd, Fhdr *fp)
100 sprint(buf, "/proc/%d/%s", pid, regs);
101 fd = open(buf, mode);
106 setmap(map, fd, 0, mach->regsize, 0, "regs");
108 if (mach->fpregsize) {
109 sprint(buf, "/proc/%d/fpregs", pid);
110 fd = open(buf, mode);
112 close(map->seg[0].fd);
116 setmap(map, fd, mach->regsize, mach->regsize+mach->fpregsize, 0, "fpregs");
118 setmap(map, corefd, fp->txtaddr, fp->txtaddr+fp->txtsz, fp->txtaddr, "text");
119 if(kflag || fp->dataddr >= mach->utop) {
120 setmap(map, corefd, fp->dataddr, ~0, fp->dataddr, "data");
125 setmap(map, corefd, fp->dataddr, mach->utop, fp->dataddr, "data");
128 setmap(map, corefd, fp->dataddr, n, fp->dataddr, "data");
133 findseg(Map *map, char *name)
139 for (i = 0; i < map->nsegs; i++)
140 if (map->seg[i].inuse && !strcmp(map->seg[i].name, name))
146 unusemap(Map *map, int i)
148 if (map != 0 && 0 <= i && i < map->nsegs)
149 map->seg[i].inuse = 0;
153 loadmap(Map *map, int fd, Fhdr *fp)
155 map = newmap(map, 2);
159 map->seg[0].b = fp->txtaddr;
160 map->seg[0].e = fp->txtaddr+fp->txtsz;
161 map->seg[0].f = fp->txtoff;
163 map->seg[0].inuse = 1;
164 map->seg[0].name = "text";
165 map->seg[1].b = fp->dataddr;
166 map->seg[1].e = fp->dataddr+fp->datsz;
167 map->seg[1].f = fp->datoff;
169 map->seg[1].inuse = 1;
170 map->seg[1].name = "data";