6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-14 14:24:05 +00:00
Code Issues Projects Releases Wiki Activity

dd the option, -link-opt-hints to llvm-objdump used with -macho to print the

Browse Source 
Mach-O AArch64 linker optimization hints for ADRP code optimization.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227246 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kevin Enderby
2015-01-27 21:28:24 +00:00
parent c94f9d3d2f
commit a167fe1877
7 changed files with 107 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
lib/Object/MachOObjectFile.cpp
View File

@ -248,8 +248,9 @@ MachOObjectFile::MachOObjectFile(MemoryBufferRef Object, bool IsLittleEndian,
bool Is64bits, std::error_code &EC)
: ObjectFile(getMachOType(IsLittleEndian, Is64bits), Object),
SymtabLoadCmd(nullptr), DysymtabLoadCmd(nullptr),
DataInCodeLoadCmd(nullptr), DyldInfoLoadCmd(nullptr),
UuidLoadCmd(nullptr), HasPageZeroSegment(false) {
DataInCodeLoadCmd(nullptr), LinkOptHintsLoadCmd(nullptr),
DyldInfoLoadCmd(nullptr), UuidLoadCmd(nullptr),
HasPageZeroSegment(false) {
uint32_t LoadCommandCount = this->getHeader().ncmds;
if (LoadCommandCount == 0)
return;
@ -280,6 +281,13 @@ MachOObjectFile::MachOObjectFile(MemoryBufferRef Object, bool IsLittleEndian,
return;
}
DataInCodeLoadCmd = Load.Ptr;
} else if (Load.C.cmd == MachO::LC_LINKER_OPTIMIZATION_HINT) {
// Multiple linker optimization hint tables
if (LinkOptHintsLoadCmd) {
EC = object_error::parse_failed;
return;
}
LinkOptHintsLoadCmd = Load.Ptr;
} else if (Load.C.cmd == MachO::LC_DYLD_INFO ||
Load.C.cmd == MachO::LC_DYLD_INFO_ONLY) {
// Multiple dyldinfo load commands
@ -2497,6 +2505,21 @@ MachOObjectFile::getDataInCodeLoadCommand() const {
return Cmd;
}
MachO::linkedit_data_command
MachOObjectFile::getLinkOptHintsLoadCommand() const {
if (LinkOptHintsLoadCmd)
return getStruct<MachO::linkedit_data_command>(this, LinkOptHintsLoadCmd);
// If there is no LinkOptHintsLoadCmd return a load command with zero'ed
// fields.
MachO::linkedit_data_command Cmd;
Cmd.cmd = MachO::LC_LINKER_OPTIMIZATION_HINT;
Cmd.cmdsize = sizeof(MachO::linkedit_data_command);
Cmd.dataoff = 0;
Cmd.datasize = 0;
return Cmd;
}
ArrayRef<uint8_t> MachOObjectFile::getDyldInfoRebaseOpcodes() const {
if (!DyldInfoLoadCmd)
return ArrayRef<uint8_t>();