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llvm-project/lld/lib/ReaderWriter/MachO/MachOPasses.h

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Move GOTPass and StubsPass from Core to MachO llvm-svn: 212652
2014-07-10 05:04:24 +08:00
//===- lib/ReaderWriter/MachO/MachOPasses.h -------------------------------===//
//
Update the file headers across all of the LLVM projects in the monorepo to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
2019-01-19 16:50:56 +08:00
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
Move GOTPass and StubsPass from Core to MachO llvm-svn: 212652
2014-07-10 05:04:24 +08:00
//
//===----------------------------------------------------------------------===//
#ifndef LLD_READER_WRITER_MACHO_PASSES_H
#define LLD_READER_WRITER_MACHO_PASSES_H
[mach-o] refactor KindHandler into ArchHandler and simplify passes. All architecture specific handling is now done in the appropriate ArchHandler subclass. The StubsPass and GOTPass have been simplified. All architecture specific variations in stubs are now encoded in a table which is vended by the current ArchHandler. llvm-svn: 213187
2014-07-17 03:49:02 +08:00
#include "lld/Core/PassManager.h"
#include "lld/ReaderWriter/MachOLinkingContext.h"
Move GOTPass and StubsPass from Core to MachO llvm-svn: 212652
2014-07-10 05:04:24 +08:00
namespace lld {
[mach-o] refactor KindHandler into ArchHandler and simplify passes. All architecture specific handling is now done in the appropriate ArchHandler subclass. The StubsPass and GOTPass have been simplified. All architecture specific variations in stubs are now encoded in a table which is vended by the current ArchHandler. llvm-svn: 213187
2014-07-17 03:49:02 +08:00
namespace mach_o {
Move GOTPass and StubsPass from Core to MachO llvm-svn: 212652
2014-07-10 05:04:24 +08:00
MachO: Move LayoutPass to MachO directory. The real user of the LayoutPass is now only Mach-O, so move that pass out of the common directory to Mach-O directory. "Core" architecture were using the LayoutPass. I modified that to use a simple OrderPass. I think no one actually have authority what feature should be in Core and what's not, but I believe the LayoutPass is not very suitable for Core. Before more code starts depending on the complex pass, it's better to remove that from Core. I could have simplified that pass because Mach-O is the only user of the LayoutPass. For example, the second parameter of the LayoutPass constructor can be converted from optional to mandatory. I didn't do that in this patch to keep it simple. I'll do in a followup patch. http://reviews.llvm.org/D7311 llvm-svn: 228341
2015-02-06 04:05:33 +08:00
void addLayoutPass(PassManager &pm, const MachOLinkingContext &ctx);
[mach-o] refactor KindHandler into ArchHandler and simplify passes. All architecture specific handling is now done in the appropriate ArchHandler subclass. The StubsPass and GOTPass have been simplified. All architecture specific variations in stubs are now encoded in a table which is vended by the current ArchHandler. llvm-svn: 213187
2014-07-17 03:49:02 +08:00
void addStubsPass(PassManager &pm, const MachOLinkingContext &ctx);
void addGOTPass(PassManager &pm, const MachOLinkingContext &ctx);
[lld] Add MachO thread-local storage support. This allows LLD to correctly link MachO objects that use thread-local storage. Differential Revision: http://reviews.llvm.org/D10578 llvm-svn: 240454
2015-06-24 04:35:31 +08:00
void addTLVPass(PassManager &pm, const MachOLinkingContext &ctx);
[mach-o] create __unwind_info section on x86_64 This is a minimally useful pass to construct the __unwind_info section in a final object from the various __compact_unwind inputs. Currently it doesn't produce any compressed pages, only works for x86_64 and will fail if any function ends up without __compact_unwind. rdar://problem/18208653 llvm-svn: 218703
2014-10-01 05:29:54 +08:00
void addCompactUnwindPass(PassManager &pm, const MachOLinkingContext &ctx);
Add an ObjCPass to the MachO linker. This pass currently emits an objc image info section if one is required. This section contains the aggregated version and flags for all of the input files. llvm-svn: 258197
2016-01-20 05:54:21 +08:00
void addObjCPass(PassManager &pm, const MachOLinkingContext &ctx);
[mach-o] Add Pass to create are shim Atoms for ARM interworking. Arm code has two instruction encodings "thumb" and "arm". When branching from one code encoding to another, you need to use an instruction that switches the instruction mode. Usually the transition only happens at call sites, and the linker can transform a BL instruction in BLX (or vice versa). But if the compiler did a tail call optimization and a function ends with a branch (not branch and link), there is no pc-rel BX instruction. The ShimPass looks for pc-rel B instructions that will need to switch mode. For those cases it synthesizes a shim which does the transition, then modifies the original atom with the B instruction to target to the shim atom. llvm-svn: 219655
2014-10-14 09:51:42 +08:00
void addShimPass(PassManager &pm, const MachOLinkingContext &ctx);
Move GOTPass and StubsPass from Core to MachO llvm-svn: 212652
2014-07-10 05:04:24 +08:00
[mach-o] refactor KindHandler into ArchHandler and simplify passes. All architecture specific handling is now done in the appropriate ArchHandler subclass. The StubsPass and GOTPass have been simplified. All architecture specific variations in stubs are now encoded in a table which is vended by the current ArchHandler. llvm-svn: 213187
2014-07-17 03:49:02 +08:00
} // namespace mach_o
Move GOTPass and StubsPass from Core to MachO llvm-svn: 212652
2014-07-10 05:04:24 +08:00
} // namespace lld
#endif // LLD_READER_WRITER_MACHO_PASSES_H