e16c0a9a68
This patch:
- adds an ld64.lld.darwinnew symlink for lld, to go with f2710d4b57,
so that `clang -fuse-ld=lld.darwinnew` can be used to test new
Mach-O lld while it's in bring-up. (The expectation is that we'll
remove this again once new Mach-O lld is the defauld and only Mach-O
lld.)
- lets the clang driver know if the linker is lld (currently
only triggered if `-fuse-ld=lld` or `-fuse-ld=lld.darwinnew` is
passed). Currently only used for the next point, but could be used
to implement other features that need close coordination between
compiler and linker, e.g. having a diag for calling `clang++` instead
of `clang` when link errors are caused by a missing C++ stdlib.
- lets the clang driver pass `-demangle` to Mach-O lld (both old and
new), in addition to ld64
- implements -demangle for new Mach-O lld
- changes demangleItanium() to accept _Z, __Z, ___Z, ____Z prefixes
(and updates one test added in D68014). Mach-O has an extra
underscore for symbols, and the three (or, on Mach-O, four)
underscores are used for block names.
Differential Revision: https://reviews.llvm.org/D91884
46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
//===- Symbols.cpp --------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "Symbols.h"
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#include "InputFiles.h"
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#include "SyntheticSections.h"
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using namespace llvm;
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using namespace lld;
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using namespace lld::macho;
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uint64_t Defined::getVA() const {
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if (isAbsolute())
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return value;
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return isec->getVA() + value;
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}
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uint64_t Defined::getFileOffset() const {
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if (isAbsolute()) {
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error("absolute symbol " + toString(*this) +
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" does not have a file offset");
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return 0;
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}
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return isec->getFileOffset() + value;
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}
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void LazySymbol::fetchArchiveMember() { file->fetch(sym); }
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// Returns a symbol for an error message.
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std::string lld::toString(const Symbol &sym) {
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if (config->demangle)
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return demangleItanium(sym.getName());
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return std::string(sym.getName());
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}
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uint64_t DSOHandle::getVA() const { return header->addr; }
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uint64_t DSOHandle::getFileOffset() const { return header->fileOff; }
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constexpr StringRef DSOHandle::name;
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