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[llvm-objcopy][MachO] Add support for LC_THREAD/LC_UNIXTHREAD 

Add support for LC_THREAD/LC_UNIXTHREAD
(these load commands can be copied over without any modifications).

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D101384
This commit is contained in:
Alexander Shaposhnikov 2021-04-27 15:54:28 -07:00
parent b19136e352
commit 4dfddf715b
2 changed files with 45 additions and 0 deletions
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43
llvm/test/tools/llvm-objcopy/MachO/lc-thread.test Normal file
View File

@ -0,0 +1,43 @@
## This test verifies that the load commands LC_THREAD/LC_UNIXTHREAD
## are copied correctly.
# RUN: yaml2obj -D LC_NAME=LC_THREAD %s -o %t.lc_thread.exe
# RUN: llvm-objcopy %t.lc_thread.exe %t.lc_thread.exe.copy
# RUN: cmp %t.lc_thread.exe %t.lc_thread.exe.copy
# RUN: yaml2obj -D LC_NAME=LC_UNIXTHREAD %s -o %t.lc_unixthread.exe
# RUN: llvm-objcopy %t.lc_unixthread.exe %t.lc_unixthread.exe.copy
# RUN: cmp %t.lc_unixthread.exe %t.lc_unixthread.exe.copy
--- !mach-o
FileHeader:
magic: 0xFEEDFACF
cputype: 0x1000007
cpusubtype: 0x3
filetype: 0x2
ncmds: 1
sizeofcmds: 184
flags: 0x18085
reserved: 0x0
LoadCommands:
- cmd: [[LC_NAME]]
cmdsize: 184
PayloadBytes: [ 0x4, 0x0, 0x0, 0x0, 0x2A, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x5C, 0xB, 0x0, 0x0,
0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0 ]
...

2
llvm/tools/llvm-objcopy/MachO/MachOLayoutBuilder.cpp
View File

@ -371,6 +371,8 @@ Error MachOLayoutBuilder::layoutTail(uint64_t Offset) {
case MachO::LC_LOAD_WEAK_DYLIB: case MachO::LC_LOAD_WEAK_DYLIB:
case MachO::LC_UUID: case MachO::LC_UUID:
case MachO::LC_SOURCE_VERSION: case MachO::LC_SOURCE_VERSION:
case MachO::LC_THREAD:
case MachO::LC_UNIXTHREAD:
// Nothing to update. // Nothing to update.
break; break;
default: default: