6 static int mapmacho(Fhdr *fp, ulong base, Map *map, Regs**);
14 int (*coreregs)(Macho*, uchar**);
17 MachoCpuPower, MPOWER, &machpower, "powerpc", coreregsmachopower,
21 load(int fd, ulong off, int size)
28 if(seek(fd, off, 0) < 0 || readn(fd, a, size) != size){
36 crackmacho(int fd, Fhdr *fp)
41 if((m = machoinit(fd)) == nil)
47 for(i=0; i<nelem(mtab); i++){
48 if(m->cputype != mtab[i].etype)
50 fp->mach = mtab[i].mach;
51 fp->mtype = mtab[i].mtype;
52 fp->mname = mtab[i].name;
53 m->coreregs = mtab[i].coreregs;
57 werrstr("unsupported cpu type %ud", m->cputype);
69 werrstr("unsupported macho file type %lud", m->filetype);
75 case MachoFileExecutable:
77 fp->fname = "executable";
81 fp->fname = "shared library";
87 case MachoFilePreload:
89 fp->fname = "preloaded executable";
93 fp->txtaddr = fp->dataddr = 0;
94 fp->txtsz = fp->datsz = 0;
95 for(i=0; i<m->ncmd; i++){
96 if(m->cmd[i].type != MachoCmdSegment)
98 if(strcmp(m->cmd[i].seg.name, "__TEXT") == 0){
99 fp->txtaddr = m->cmd[i].seg.vmaddr;
100 fp->txtsz = m->cmd[i].seg.vmsize;
101 fp->txtoff = m->cmd[i].seg.fileoff;
103 if(strcmp(m->cmd[i].seg.name, "__DATA") == 0){
104 fp->dataddr = m->cmd[i].seg.vmaddr;
105 fp->datsz = m->cmd[i].seg.filesz;
106 fp->datoff = m->cmd[i].seg.fileoff;
107 fp->bsssz = m->cmd[i].seg.vmsize - fp->datsz;
112 fp->syminit = symmacho;
114 for(i=0; i<m->ncmd; i++)
115 if(m->cmd[i].type == MachoCmdSymtab)
118 fp->stabs.stabbase = load(fp->fd, m->cmd[i].sym.symoff, m->cmd[i].sym.nsyms*16);
119 fp->stabs.stabsize = m->cmd[i].sym.nsyms*16;
120 fp->stabs.strbase = (char*)load(fp->fd, m->cmd[i].sym.stroff, m->cmd[i].sym.strsize);
121 if(fp->stabs.stabbase == nil || fp->stabs.strbase == nil){
122 fp->stabs.stabbase = nil;
123 fp->stabs.strbase = nil;
125 fp->stabs.strsize = m->cmd[i].sym.strsize;
126 fp->stabs.e2 = (m->e4==beload4 ? beload2 : leload2);
127 fp->stabs.e4 = m->e4;
139 mapmacho(Fhdr *fp, ulong base, Map *map, Regs **rp)
150 werrstr("not a macho file");
154 for(i=0; i<m->ncmd; i++){
156 if(c->type != MachoCmdSegment)
159 memset(&s, 0, sizeof s);
160 s.file = fp->filename;
162 if(fp->ftype == FCORE)
164 else if(strcmp(c->seg.name, "__DATA") == 0)
168 s.base = base+c->seg.vmaddr;
169 s.size = c->seg.filesz;
170 s.offset = c->seg.fileoff;
171 if(addseg(map, s) < 0)
174 if(c->seg.filesz < c->seg.vmsize){
175 memset(&s, 0, sizeof s);
177 s.base = base + c->seg.vmaddr + c->seg.filesz;
178 s.size = c->seg.vmsize - c->seg.filesz;
179 if(addseg(map, s) < 0)
184 if(fp->ftype == FCORE && m->coreregs){
185 n = m->coreregs(m, &u);
187 fprint(2, "mapping registers: %r\n");
190 if((r = mallocz(sizeof *r, 1)) == nil)