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[llvm-objdump/mac] Add support for new load commands 

Differential Revision: https://reviews.llvm.org/D113733
This commit is contained in:
Keith Smiley 2021-11-11 22:16:39 -08:00
parent 78d60094c7
commit 693b02023e
2 changed files with 252 additions and 1 deletions
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245
llvm/test/tools/llvm-objdump/MachO/chained-fixups.yaml Normal file
View File

@ -0,0 +1,245 @@
# RUN: yaml2obj %s -o %t
# RUN: llvm-objdump -p %t | FileCheck %s
# RUN: llvm-otool -l %t | FileCheck %s
#
# CHECK: LC_DYLD_CHAINED_FIXUPS
# CHECK: LC_DYLD_EXPORTS_TRIE
--- !mach-o
FileHeader:
magic: 0xFEEDFACF
cputype: 0x100000C
cpusubtype: 0x0
filetype: 0x2
ncmds: 16
sizeofcmds: 744
flags: 0x200085
reserved: 0x0
LoadCommands:
- cmd: LC_SEGMENT_64
cmdsize: 72
segname: __PAGEZERO
vmaddr: 0
vmsize: 4294967296
fileoff: 0
filesize: 0
maxprot: 0
initprot: 0
nsects: 0
flags: 0
- cmd: LC_SEGMENT_64
cmdsize: 232
segname: __TEXT
vmaddr: 4294967296
vmsize: 16384
fileoff: 0
filesize: 16384
maxprot: 5
initprot: 5
nsects: 2
flags: 0
Sections:
- sectname: __text
segname: __TEXT
addr: 0x100003F98
size: 24
offset: 0x3F98
align: 2
reloff: 0x0
nreloc: 0
flags: 0x80000400
reserved1: 0x0
reserved2: 0x0
reserved3: 0x0
content: C0035FD6FF4300D100008052FF0F00B9FF430091C0035FD6
- sectname: __unwind_info
segname: __TEXT
addr: 0x100003FB0
size: 80
offset: 0x3FB0
align: 2
reloff: 0x0
nreloc: 0
flags: 0x0
reserved1: 0x0
reserved2: 0x0
reserved3: 0x0
content: 010000001C000000000000001C000000000000001C00000002000000983F00003400000034000000B13F00000000000034000000030000000C0002001400020000000001040000000010000200000002
- cmd: LC_SEGMENT_64
cmdsize: 72
segname: __LINKEDIT
vmaddr: 4294983680
vmsize: 16384
fileoff: 16384
filesize: 753
maxprot: 1
initprot: 1
nsects: 0
flags: 0
- cmd: LC_DYLD_CHAINED_FIXUPS
cmdsize: 16
dataoff: 16384
datasize: 56
- cmd: LC_DYLD_EXPORTS_TRIE
cmdsize: 16
dataoff: 16440
datasize: 56
- cmd: LC_SYMTAB
cmdsize: 24
symoff: 16504
nsyms: 15
stroff: 16744
strsize: 120
- cmd: LC_DYSYMTAB
cmdsize: 80
ilocalsym: 0
nlocalsym: 12
iextdefsym: 12
nextdefsym: 3
iundefsym: 15
nundefsym: 0
tocoff: 0
ntoc: 0
modtaboff: 0
nmodtab: 0
extrefsymoff: 0
nextrefsyms: 0
indirectsymoff: 0
nindirectsyms: 0
extreloff: 0
nextrel: 0
locreloff: 0
nlocrel: 0
- cmd: LC_LOAD_DYLINKER
cmdsize: 32
name: 12
Content: '/usr/lib/dyld'
ZeroPadBytes: 7
- cmd: LC_UUID
cmdsize: 24
uuid: F445529E-643C-3A38-8F59-AB64566BCAFF
- cmd: LC_BUILD_VERSION
cmdsize: 32
platform: 1
minos: 786432
sdk: 786432
ntools: 1
Tools:
- tool: 3
version: 46596096
- cmd: LC_SOURCE_VERSION
cmdsize: 16
version: 0
- cmd: LC_MAIN
cmdsize: 24
entryoff: 16284
stacksize: 0
- cmd: LC_LOAD_DYLIB
cmdsize: 56
dylib:
name: 24
timestamp: 2
current_version: 85917696
compatibility_version: 65536
Content: '/usr/lib/libSystem.B.dylib'
ZeroPadBytes: 6
- cmd: LC_FUNCTION_STARTS
cmdsize: 16
dataoff: 16496
datasize: 8
- cmd: LC_DATA_IN_CODE
cmdsize: 16
dataoff: 16504
datasize: 0
- cmd: LC_CODE_SIGNATURE
cmdsize: 16
dataoff: 16864
datasize: 273
LinkEditData:
NameList:
- n_strx: 33
n_type: 0x64
n_sect: 0
n_desc: 0
n_value: 0
- n_strx: 39
n_type: 0x64
n_sect: 0
n_desc: 0
n_value: 0
- n_strx: 46
n_type: 0x66
n_sect: 0
n_desc: 1
n_value: 1636754403
- n_strx: 1
n_type: 0x2E
n_sect: 1
n_desc: 0
n_value: 4294983576
- n_strx: 109
n_type: 0x24
n_sect: 1
n_desc: 0
n_value: 4294983576
- n_strx: 1
n_type: 0x24
n_sect: 0
n_desc: 0
n_value: 4
- n_strx: 1
n_type: 0x4E
n_sect: 1
n_desc: 0
n_value: 4
- n_strx: 1
n_type: 0x2E
n_sect: 1
n_desc: 0
n_value: 4294983580
- n_strx: 114
n_type: 0x24
n_sect: 1
n_desc: 0
n_value: 4294983580
- n_strx: 1
n_type: 0x24
n_sect: 0
n_desc: 0
n_value: 20
- n_strx: 1
n_type: 0x4E
n_sect: 1
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n_value: 20
- n_strx: 1
n_type: 0x64
n_sect: 1
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n_value: 0
- n_strx: 2
n_type: 0xF
n_sect: 1
n_desc: 16
n_value: 4294967296
- n_strx: 22
n_type: 0xF
n_sect: 1
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n_value: 4294983576
- n_strx: 27
n_type: 0xF
n_sect: 1
n_desc: 0
n_value: 4294983580
StringTable:
- ' '
- __mh_execute_header
- _foo
- _main
- '/tmp/'
- main.c
- '/var/folders/gj/wf3swl0x215b2sq1qy84kzkm0000gn/T/main-e32fe7.o'
- _foo
- _main
...

8
llvm/tools/llvm-objdump/MachODump.cpp
View File

@ -10053,6 +10053,10 @@ static void PrintLinkEditDataCommand(MachO::linkedit_data_command ld,
outs() << " cmd LC_DYLIB_CODE_SIGN_DRS\n";
else if (ld.cmd == MachO::LC_LINKER_OPTIMIZATION_HINT)
outs() << " cmd LC_LINKER_OPTIMIZATION_HINT\n";
else if (ld.cmd == MachO::LC_DYLD_EXPORTS_TRIE)
outs() << " cmd LC_DYLD_EXPORTS_TRIE\n";
else if (ld.cmd == MachO::LC_DYLD_CHAINED_FIXUPS)
outs() << " cmd LC_DYLD_CHAINED_FIXUPS\n";
else
outs() << " cmd " << ld.cmd << " (?)\n";
outs() << " cmdsize " << ld.cmdsize;
@ -10196,7 +10200,9 @@ static void PrintLoadCommands(const MachOObjectFile *Obj, uint32_t filetype,
Command.C.cmd == MachO::LC_FUNCTION_STARTS ||
Command.C.cmd == MachO::LC_DATA_IN_CODE ||
Command.C.cmd == MachO::LC_DYLIB_CODE_SIGN_DRS ||
Command.C.cmd == MachO::LC_LINKER_OPTIMIZATION_HINT) {
Command.C.cmd == MachO::LC_LINKER_OPTIMIZATION_HINT ||
Command.C.cmd == MachO::LC_DYLD_EXPORTS_TRIE ||
Command.C.cmd == MachO::LC_DYLD_CHAINED_FIXUPS) {
MachO::linkedit_data_command Ld =
Obj->getLinkeditDataLoadCommand(Command);
PrintLinkEditDataCommand(Ld, Buf.size());