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5f1bb62c6b
This also adds support for auth stubs on MachO using __DATA,__auth_ptr. Some of the machinery for auth stubs is already implemented; this generalizes that a bit to support MachO, and moves some of the shared logic into MMIImpls. In particular, this originally had an AuthStubInfo struct, but we no longer need it beyond a single MCExpr. So this provides variants of the symbol stub helper type declarations and functions for "expr stubs", where a stub points at an arbitrary MCExpr, rather than a simple MCSymbol (and a bit).
62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
//===- llvm/CodeGen/MachineModuleInfoImpls.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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//
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// This file implements object-file format specific implementations of
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// MachineModuleInfoImpl.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/MachineModuleInfoImpls.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/MC/MCSymbol.h"
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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// MachineModuleInfoMachO
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//===----------------------------------------------------------------------===//
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// Out of line virtual method.
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void MachineModuleInfoMachO::anchor() {}
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void MachineModuleInfoELF::anchor() {}
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void MachineModuleInfoCOFF::anchor() {}
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void MachineModuleInfoWasm::anchor() {}
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using PairTy = std::pair<MCSymbol *, MachineModuleInfoImpl::StubValueTy>;
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static int SortSymbolPair(const PairTy *LHS, const PairTy *RHS) {
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return LHS->first->getName().compare(RHS->first->getName());
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}
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MachineModuleInfoImpl::SymbolListTy MachineModuleInfoImpl::getSortedStubs(
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DenseMap<MCSymbol *, MachineModuleInfoImpl::StubValueTy> &Map) {
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MachineModuleInfoImpl::SymbolListTy List(Map.begin(), Map.end());
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array_pod_sort(List.begin(), List.end(), SortSymbolPair);
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Map.clear();
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return List;
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}
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using ExprStubPairTy = std::pair<MCSymbol *, const MCExpr *>;
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static int SortAuthStubPair(const ExprStubPairTy *LHS,
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const ExprStubPairTy *RHS) {
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return LHS->first->getName().compare(RHS->first->getName());
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}
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MachineModuleInfoImpl::ExprStubListTy MachineModuleInfoImpl::getSortedExprStubs(
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DenseMap<MCSymbol *, const MCExpr *> &ExprStubs) {
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MachineModuleInfoImpl::ExprStubListTy List(ExprStubs.begin(),
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ExprStubs.end());
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array_pod_sort(List.begin(), List.end(), SortAuthStubPair);
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ExprStubs.clear();
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return List;
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}
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