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i386-darwin.dylib ::unpack

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This commit is contained in:
John Reiser 2009-05-19 15:57:18 -07:00
parent 3e8d072d24
commit 7d38f0e234
1 changed files with 34 additions and 25 deletions
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59
src/p_mach.cpp
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@ -776,31 +776,10 @@ void PackMachBase<T>::pack1(OutputFile *const fo, Filter &/*ft*/) // generate e
segcmdo.flags = 0;
if (my_filetype==Mach_header::MH_EXECUTE) {
fo->write(&segcmdo, sizeof(segcmdo));
}
if (my_filetype==Mach_header::MH_EXECUTE) {
pack1_setup_threado(fo);
}
if (my_filetype==Mach_header::MH_DYLIB) {
Mach_segment_command const *seg = rawmseg;
Mach_segment_command const *const endseg =
(Mach_segment_command const *)(mhdri.sizeofcmds + (char const *)seg);
for (; seg < endseg; seg = (Mach_segment_command const *)(
seg->cmdsize + (char const *)seg))
switch (~Mach_segment_command::LC_REQ_DYLD & seg->cmd) {
default: {
fo->write(seg, seg->cmdsize);
} break;
case Mach_segment_command::LC_SEGMENT: {
//if (0!=strncmp(&seg->segname[0], "__TEXT", 1+ 6)) {
fo->write(seg, seg->cmdsize);
//}
} break;
} // end 'switch'
memset(&rcmd, 0, sizeof(rcmd));
rcmd.cmd= Mach_segment_command::LC_ROUTINES;
rcmd.cmdsize = sizeof(rcmd);
//fo->write(&rcmd, sizeof(rcmd));
fo->write(rawmseg, mhdri.sizeofcmds);
}
sz_mach_headers = fo->getBytesWritten();
@ -813,8 +792,11 @@ void PackMachBase<T>::pack1(OutputFile *const fo, Filter &/*ft*/) // generate e
template <class T>
void PackMachBase<T>::unpack(OutputFile *fo)
{
overlay_offset = sizeof(mhdro) + sizeof(segcmdo) +
my_thread_command_size + sizeof(linfo);
fi->seek(0, SEEK_SET);
fi->readx(&mhdri, sizeof(mhdri));
rawmseg = (Mach_segment_command *)new char[(unsigned) mhdri.sizeofcmds];
fi->readx(rawmseg, mhdri.sizeofcmds);
overlay_offset = sizeof(mhdri) + mhdri.sizeofcmds + sizeof(linfo);
fi->seek(overlay_offset, SEEK_SET);
p_info hbuf;
fi->readx(&hbuf, sizeof(hbuf));
@ -868,9 +850,35 @@ void PackMachBase<T>::unpack(OutputFile *fo)
if (Mach_segment_command::LC_SEGMENT==sc->cmd
&& 0!=sc->filesize ) {
unsigned filesize = sc->filesize;
unpackExtent(filesize, fo, total_in, total_out, c_adler, u_adler, false, sizeof(bhdr));
unpackExtent(filesize, fo, total_in, total_out,
c_adler, u_adler, false, sizeof(bhdr));
if (my_filetype==Mach_header::MH_DYLIB) {
break;
}
}
}
if (my_filetype==Mach_header::MH_DYLIB) {
Mach_segment_command const *rc = rawmseg;
rc = (Mach_segment_command const *)(rc->cmdsize + (char const *)rc);
sc = (Mach_segment_command const *)(sc->cmdsize + (char const *)sc);
for (
k=1;
k < ncmds;
(++k), (sc = (Mach_segment_command const *)(sc->cmdsize + (char const *)sc)),
(rc = (Mach_segment_command const *)(rc->cmdsize + (char const *)rc))
) {
if (Mach_segment_command::LC_SEGMENT==rc->cmd
&& 0!=rc->filesize ) {
fi->seek(rc->fileoff, SEEK_SET);
fo->seek(sc->fileoff, SEEK_SET);
unsigned const len = rc->filesize;
char data[len];
fi->readx(data, len);
fo->write(data, len);
}
}
}
else
for (unsigned j = 0; j < ncmds; ++j) {
unsigned const size = find_SEGMENT_gap(j);
if (size) {
@ -881,6 +889,7 @@ void PackMachBase<T>::unpack(OutputFile *fo)
c_adler, u_adler, false, sizeof(bhdr));
}
}
delete mhdr;
}