94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
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#include <u.h>
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#include <libc.h>
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#include <mach.h>
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#include "stabs.h"
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#include "macho.h"
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void
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usage(void)
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{
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fprint(2, "usage: machodump file list\n");
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fprint(2, " machodump file stabs\n");
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exits("usage");
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}
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uchar*
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load(int fd, ulong off, int size)
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{
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uchar *a;
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a = malloc(size);
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print("malloc %d -> %p\n", size, a);
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if(a == nil)
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sysfatal("malloc: %r");
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if(seek(fd, off, 0) < 0)
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sysfatal("seek %lud: %r", off);
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if(readn(fd, a, size) != size)
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sysfatal("readn: %r");
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return a;
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}
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void
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main(int argc, char **argv)
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{
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int i;
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Macho *m;
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ARGBEGIN{
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default:
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usage();
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}ARGEND
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if(argc < 2)
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usage();
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if((m = machoopen(argv[0])) == nil)
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sysfatal("machoopen %s: %r", argv[0]);
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if(strcmp(argv[1], "stabs") == 0){
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Stab stabs;
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StabSym sym;
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for(i=0; i<m->ncmd; i++){
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if(m->cmd[i].type == MachoCmdSymtab){
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stabs.stabbase = load(m->fd, m->cmd[i].sym.symoff, m->cmd[i].sym.nsyms*16);
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stabs.stabsize = m->cmd[i].sym.nsyms*16;
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stabs.strbase = load(m->fd, m->cmd[i].sym.stroff, m->cmd[i].sym.strsize);
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stabs.strsize = m->cmd[i].sym.strsize;
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stabs.e4 = m->e4;
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stabs.e2 = (m->e4 == beload4 ? beload2 : leload2);
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print("cmd%d: %p %ud %p %ud\n", i, stabs.stabbase, stabs.stabsize, stabs.strbase, stabs.strsize);
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for(i=0; stabsym(&stabs, i, &sym) >= 0; i++)
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print("%s type 0x%x other %d desc %d value 0x%lux\n",
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sym.name, sym.type, sym.other, (int)sym.desc, (ulong)sym.value);
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print("err at %d: %r\n", i);
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}
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}
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}
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else if(strcmp(argv[1], "list") == 0){
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print("macho cpu %ud sub %ud filetype %lud flags %lud\n",
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m->cputype, m->subcputype, m->filetype, m->flags);
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for(i=0; i<m->ncmd; i++){
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switch(m->cmd[i].type){
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case MachoCmdSymtab:
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print("cmd%d: symtab %lud+%lud %lud+%lud\n", i,
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m->cmd[i].sym.symoff, m->cmd[i].sym.nsyms,
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m->cmd[i].sym.stroff, m->cmd[i].sym.strsize);
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break;
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case MachoCmdSegment:
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print("cmd%d: segment %s vm 0x%lux+0x%lux file 0x%lux+0x%lux prot 0x%lux/0x%lux ns %d flags 0x%lux\n", i,
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m->cmd[i].seg.name, m->cmd[i].seg.vmaddr, m->cmd[i].seg.vmsize,
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m->cmd[i].seg.fileoff, m->cmd[i].seg.filesz, m->cmd[i].seg.maxprot,
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m->cmd[i].seg.initprot, m->cmd[i].seg.nsect, m->cmd[i].seg.flags);
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break;
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default:
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print("cmd%d: type %d offset %lud\n", i, m->cmd[i].type, m->cmd[i].off);
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break;
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}
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}
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}
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else
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usage();
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exits(0);
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}
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