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MH_EXECUTE runs under lldb, fails under shell

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mmap  addr=0x100000000  len=0x3003  prot=0x3  flags=0x1012  fd=-1  off=0x0  reloc=0x0
maddr=0xffffffffffffffff  addr=0x100000000
	modified:   p_mach.cpp
	modified:   p_mach_enum.h
	modified:   stub/src/amd64-darwin.macho-entry.S
	modified:   stub/src/amd64-darwin.macho-fold.S
	modified:   stub/src/amd64-darwin.macho-main.c
This commit is contained in:
John Reiser
2017-12-13 09:54:44 -08:00
parent 3400ae9dbe
commit 5063480a38
9 changed files with 946 additions and 782 deletions
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src/p_mach.cpp
+11 -1
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@@ -587,7 +587,8 @@ void PackMachBase<T>::pack4(OutputFile *fo, Filter &ft) // append PackHeader
segLINK.fileoff = len; // must be in the file
segLINK.vmaddr = len + segTEXT.vmaddr;
fo->write(page, 16); len += 16;
segLINK.vmsize = 16;
// reserve convex hull of input segments
segLINK.vmsize -= (segLINK.vmaddr - segTEXT.vmaddr);
segLINK.filesize = 16;
// Get a writeable copy of the stub to make editing easier.
@@ -1324,6 +1325,15 @@ void PackMachBase<T>::pack1(OutputFile *const fo, Filter &/*ft*/) // generate e
segLINK.nsects = 0;
segLINK.initprot = Mach_command::VM_PROT_READ;
// Adjust later: .vmaddr .vmsize .fileoff .filesize
uint64_t up(0);
unsigned const ncmds = mhdri.ncmds;
for (unsigned j= 0; j < ncmds; ++j) if (lc_seg == msegcmd[j].cmd) {
uint64_t sup = msegcmd[j].vmsize + msegcmd[j].vmaddr;
if (up < sup) {
up = sup;
segLINK.vmsize = sup - segLINK.vmaddr;
}
}
unsigned gap = 0;
if (my_filetype == Mach_header::MH_EXECUTE) {