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Revert "[yaml2obj] Sort MachO LinkEdit write operations based on offset"

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This reverts commit r271611 because it broke a bot:

http://bb.pgr.jp/builders/cmake-llvm-x86_64-linux/builds/38184

I don't currently have a handle on what went wrong, so I'll revert while I investigate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271613 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Bieneman 2016-06-02 23:58:13 +00:00
parent 8d6539b448
commit 865444b50d
2 changed files with 26 additions and 332 deletions
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266
test/ObjectYAML/MachO/out_of_order_linkedit.yaml
View File

@ -1,266 +0,0 @@
# RUN: yaml2obj -format=macho %s | obj2yaml | FileCheck %s
--- !mach-o
FileHeader:
magic: 0xFEEDFACF
cputype: 0x01000007
cpusubtype: 0x80000003
filetype: 0x00000002
ncmds: 16
sizeofcmds: 1408
flags: 0x00218085
reserved: 0x00000000
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: 552
segname: __TEXT
vmaddr: 4294967296
vmsize: 8192
fileoff: 0
filesize: 8192
maxprot: 7
initprot: 5
nsects: 6
flags: 0
- cmd: LC_SEGMENT_64
cmdsize: 312
segname: __DATA
vmaddr: 4294975488
vmsize: 4096
fileoff: 8192
filesize: 4096
maxprot: 7
initprot: 3
nsects: 3
flags: 0
- cmd: LC_SEGMENT_64
cmdsize: 72
segname: __LINKEDIT
vmaddr: 4294979584
vmsize: 4096
fileoff: 12288
filesize: 2508
maxprot: 7
initprot: 1
nsects: 0
flags: 0
- cmd: LC_DYLD_INFO_ONLY
cmdsize: 48
rebase_off: 12384
rebase_size: 8
bind_off: 12288
bind_size: 96
weak_bind_off: 0
weak_bind_size: 0
lazy_bind_off: 12392
lazy_bind_size: 624
export_off: 13016
export_size: 48
- cmd: LC_SYMTAB
cmdsize: 24
symoff: 13080
nsyms: 30
stroff: 13700
strsize: 1096
- cmd: LC_DYSYMTAB
cmdsize: 80
ilocalsym: 0
nlocalsym: 9
iextdefsym: 9
nextdefsym: 2
iundefsym: 11
nundefsym: 19
tocoff: 0
ntoc: 0
modtaboff: 0
nmodtab: 0
extrefsymoff: 0
nextrefsyms: 0
indirectsymoff: 13560
nindirectsyms: 35
extreloff: 0
nextrel: 0
locreloff: 0
nlocrel: 0
- cmd: LC_LOAD_DYLINKER
cmdsize: 32
name: 12
PayloadString: /usr/lib/dyld
ZeroPadBytes: 7
- cmd: LC_UUID
cmdsize: 24
uuid: 461A1B28-822F-3F38-B670-645419E636F5
- cmd: LC_VERSION_MIN_MACOSX
cmdsize: 16
version: 658176
sdk: 658176
- cmd: LC_SOURCE_VERSION
cmdsize: 16
version: 0
- cmd: LC_MAIN
cmdsize: 24
entryoff: 4448
stacksize: 0
- cmd: LC_LOAD_DYLIB
cmdsize: 48
dylib:
name: 24
timestamp: 2
current_version: 7864576
compatibility_version: 65536
PayloadString: '/usr/lib/libc++.1.dylib'
ZeroPadBytes: 1
- cmd: LC_LOAD_DYLIB
cmdsize: 56
dylib:
name: 24
timestamp: 2
current_version: 80349697
compatibility_version: 65536
PayloadString: /usr/lib/libSystem.B.dylib
ZeroPadBytes: 6
- cmd: LC_FUNCTION_STARTS
cmdsize: 16
dataoff: 13064
datasize: 16
- cmd: LC_DATA_IN_CODE
cmdsize: 16
dataoff: 13080
datasize: 0
LinkEditData:
RebaseOpcodes:
- Opcode: REBASE_OPCODE_SET_TYPE_IMM
Imm: 1
- Opcode: REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB
Imm: 2
ExtraData:
- 0x0000000000000028
- Opcode: REBASE_OPCODE_DO_REBASE_ULEB_TIMES
Imm: 0
ExtraData:
- 0x000000000000000F
- Opcode: REBASE_OPCODE_DONE
Imm: 0
BindOpcodes:
- Opcode: BIND_OPCODE_SET_DYLIB_ORDINAL_IMM
Imm: 1
Symbol: ''
- Opcode: BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM
Imm: 0
Symbol: __ZNSt3__14coutE
- Opcode: BIND_OPCODE_SET_TYPE_IMM
Imm: 1
Symbol: ''
- Opcode: BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB
Imm: 2
ULEBExtraData:
- 0x0000000000000000
Symbol: ''
- Opcode: BIND_OPCODE_DO_BIND
Imm: 0
Symbol: ''
- Opcode: BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM
Imm: 0
Symbol: __ZNSt3__15ctypeIcE2idE
- Opcode: BIND_OPCODE_DO_BIND
Imm: 0
Symbol: ''
- Opcode: BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM
Imm: 0
Symbol: ___gxx_personality_v0
- Opcode: BIND_OPCODE_DO_BIND
Imm: 0
Symbol: ''
- Opcode: BIND_OPCODE_SET_DYLIB_ORDINAL_IMM
Imm: 2
Symbol: ''
- Opcode: BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM
Imm: 0
Symbol: dyld_stub_binder
- Opcode: BIND_OPCODE_DO_BIND
Imm: 0
Symbol: ''
- Opcode: BIND_OPCODE_DONE
Imm: 0
Symbol: ''
...
#CHECK: - cmd: LC_DYLD_INFO_ONLY
#CHECK: cmdsize: 48
#CHECK: rebase_off: 12384
#CHECK: rebase_size: 8
#CHECK: bind_off: 12288
#CHECK: bind_size: 96
#CHECK: weak_bind_off: 0
#CHECK: weak_bind_size: 0
#CHECK: lazy_bind_off: 12392
#CHECK: lazy_bind_size: 624
#CHECK: export_off: 13016
#CHECK: export_size: 48
#CHECK: LinkEditData:
#CHECK: RebaseOpcodes:
#CHECK: - Opcode: REBASE_OPCODE_SET_TYPE_IMM
#CHECK: Imm: 1
#CHECK: - Opcode: REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB
#CHECK: Imm: 2
#CHECK: ExtraData:
#CHECK: - 0x0000000000000028
#CHECK: - Opcode: REBASE_OPCODE_DO_REBASE_ULEB_TIMES
#CHECK: Imm: 0
#CHECK: ExtraData:
#CHECK: - 0x000000000000000F
#CHECK: - Opcode: REBASE_OPCODE_DONE
#CHECK: Imm: 0
#CHECK: BindOpcodes:
#CHECK: - Opcode: BIND_OPCODE_SET_DYLIB_ORDINAL_IMM
#CHECK: Imm: 1
#CHECK: Symbol: ''
#CHECK: - Opcode: BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM
#CHECK: Imm: 0
#CHECK: Symbol: __ZNSt3__14coutE
#CHECK: - Opcode: BIND_OPCODE_SET_TYPE_IMM
#CHECK: Imm: 1
#CHECK: Symbol: ''
#CHECK: - Opcode: BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB
#CHECK: Imm: 2
#CHECK: ULEBExtraData:
#CHECK: - 0x0000000000000000
#CHECK: Symbol: ''
#CHECK: - Opcode: BIND_OPCODE_DO_BIND
#CHECK: Imm: 0
#CHECK: Symbol: ''
#CHECK: - Opcode: BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM
#CHECK: Imm: 0
#CHECK: Symbol: __ZNSt3__15ctypeIcE2idE
#CHECK: - Opcode: BIND_OPCODE_DO_BIND
#CHECK: Imm: 0
#CHECK: Symbol: ''
#CHECK: - Opcode: BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM
#CHECK: Imm: 0
#CHECK: Symbol: ___gxx_personality_v0
#CHECK: - Opcode: BIND_OPCODE_DO_BIND
#CHECK: Imm: 0
#CHECK: Symbol: ''
#CHECK: - Opcode: BIND_OPCODE_SET_DYLIB_ORDINAL_IMM
#CHECK: Imm: 2
#CHECK: Symbol: ''
#CHECK: - Opcode: BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM
#CHECK: Imm: 0
#CHECK: Symbol: dyld_stub_binder
#CHECK: - Opcode: BIND_OPCODE_DO_BIND
#CHECK: Imm: 0
#CHECK: Symbol: ''
#CHECK: - Opcode: BIND_OPCODE_DONE
#CHECK: Imm: 0
#CHECK: Symbol: ''

92
tools/yaml2obj/yaml2macho.cpp
View File

@ -46,15 +46,8 @@ private:
Error writeLoadCommands(raw_ostream &OS);
Error writeSectionData(raw_ostream &OS);
Error writeLinkEditData(raw_ostream &OS);
void writeBindOpcodes(raw_ostream &OS,
void writeBindOpcodes(raw_ostream &OS, uint64_t offset,
std::vector<MachOYAML::BindOpcode> &BindOpcodes);
// LinkEdit writers
Error writeRebaseOpcodes(raw_ostream &OS);
Error writeBasicBindOpcodes(raw_ostream &OS);
Error writeWeakBindOpcodes(raw_ostream &OS);
Error writeLazyBindOpcodes(raw_ostream &OS);
Error writeNameList(raw_ostream &OS);
Error writeStringTable(raw_ostream &OS);
Error writeExportTrie(raw_ostream &OS);
void dumpExportEntry(raw_ostream &OS, MachOYAML::ExportEntry &Entry);
@ -282,7 +275,9 @@ Error MachOWriter::writeSectionData(raw_ostream &OS) {
}
void MachOWriter::writeBindOpcodes(
raw_ostream &OS, std::vector<MachOYAML::BindOpcode> &BindOpcodes) {
raw_ostream &OS, uint64_t offset,
std::vector<MachOYAML::BindOpcode> &BindOpcodes) {
ZeroToOffset(OS, offset);
for (auto Opcode : BindOpcodes) {
uint8_t OpByte = Opcode.Opcode | Opcode.Imm;
@ -342,55 +337,21 @@ void writeNListEntry(MachOYAML::NListEntry &NLE, raw_ostream &OS) {
}
Error MachOWriter::writeLinkEditData(raw_ostream &OS) {
typedef Error (MachOWriter::*writeHandler)(raw_ostream &);
typedef std::pair<uint64_t, writeHandler> writeOperation;
std::vector<writeOperation> WriteQueue;
MachOYAML::LinkEditData &LinkEdit = Obj.LinkEdit;
MachO::dyld_info_command *DyldInfoOnlyCmd = 0;
MachO::symtab_command *SymtabCmd = 0;
for (auto &LC : Obj.LoadCommands) {
switch (LC.Data.load_command_data.cmd) {
case MachO::LC_SYMTAB:
SymtabCmd = &LC.Data.symtab_command_data;
WriteQueue.push_back(
std::make_pair(SymtabCmd->symoff, &MachOWriter::writeNameList));
WriteQueue.push_back(
std::make_pair(SymtabCmd->stroff, &MachOWriter::writeStringTable));
break;
case MachO::LC_DYLD_INFO_ONLY:
DyldInfoOnlyCmd = &LC.Data.dyld_info_command_data;
WriteQueue.push_back(std::make_pair(DyldInfoOnlyCmd->rebase_off,
&MachOWriter::writeRebaseOpcodes));
WriteQueue.push_back(std::make_pair(DyldInfoOnlyCmd->bind_off,
&MachOWriter::writeBasicBindOpcodes));
WriteQueue.push_back(std::make_pair(DyldInfoOnlyCmd->weak_bind_off,
&MachOWriter::writeWeakBindOpcodes));
WriteQueue.push_back(std::make_pair(DyldInfoOnlyCmd->lazy_bind_off,
&MachOWriter::writeLazyBindOpcodes));
WriteQueue.push_back(std::make_pair(DyldInfoOnlyCmd->export_off,
&MachOWriter::writeExportTrie));
break;
}
}
std::sort(
WriteQueue.begin(), WriteQueue.end(),
[](writeOperation &a, writeOperation &b) { return a.first < b.first; });
for (auto writeOp : WriteQueue) {
ZeroToOffset(OS, writeOp.first);
if (auto Err = (this->*writeOp.second)(OS))
return Err;
}
// Fill to the end of the string table
ZeroToOffset(OS, SymtabCmd->stroff + SymtabCmd->strsize);
return Error::success();
}
Error MachOWriter::writeRebaseOpcodes(raw_ostream &OS) {
MachOYAML::LinkEditData &LinkEdit = Obj.LinkEdit;
ZeroToOffset(OS, DyldInfoOnlyCmd->rebase_off);
for (auto Opcode : LinkEdit.RebaseOpcodes) {
uint8_t OpByte = Opcode.Opcode | Opcode.Imm;
@ -399,39 +360,38 @@ Error MachOWriter::writeRebaseOpcodes(raw_ostream &OS) {
encodeULEB128(Data, OS);
}
}
return Error::success();
}
Error MachOWriter::writeBasicBindOpcodes(raw_ostream &OS) {
writeBindOpcodes(OS, Obj.LinkEdit.BindOpcodes);
return Error::success();
}
writeBindOpcodes(OS, DyldInfoOnlyCmd->bind_off, LinkEdit.BindOpcodes);
writeBindOpcodes(OS, DyldInfoOnlyCmd->weak_bind_off,
LinkEdit.WeakBindOpcodes);
writeBindOpcodes(OS, DyldInfoOnlyCmd->lazy_bind_off,
LinkEdit.LazyBindOpcodes);
Error MachOWriter::writeWeakBindOpcodes(raw_ostream &OS) {
writeBindOpcodes(OS, Obj.LinkEdit.WeakBindOpcodes);
return Error::success();
}
ZeroToOffset(OS, DyldInfoOnlyCmd->export_off);
if (auto Err = writeExportTrie(OS))
return Err;
Error MachOWriter::writeLazyBindOpcodes(raw_ostream &OS) {
writeBindOpcodes(OS, Obj.LinkEdit.LazyBindOpcodes);
return Error::success();
}
Error MachOWriter::writeNameList(raw_ostream &OS) {
for (auto NLE : Obj.LinkEdit.NameList) {
ZeroToOffset(OS, SymtabCmd->symoff);
for (auto NLE : LinkEdit.NameList) {
if (is64Bit)
writeNListEntry<MachO::nlist_64>(NLE, OS);
else
writeNListEntry<MachO::nlist>(NLE, OS);
}
return Error::success();
}
Error MachOWriter::writeStringTable(raw_ostream &OS) {
for (auto Str : Obj.LinkEdit.StringTable) {
auto currOffset = OS.tell() - fileStart;
if (currOffset < SymtabCmd->stroff)
Fill(OS, SymtabCmd->stroff - currOffset, 0xDEADBEEFu);
for (auto Str : LinkEdit.StringTable) {
OS.write(Str.data(), Str.size());
OS.write('\0');
}
// Fill to the end of the string table
ZeroToOffset(OS, SymtabCmd->stroff + SymtabCmd->strsize);
return Error::success();
}