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//===- llvm/CodeGen/MachineModuleInfoImpls.h --------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file defines object-file format specific implementations of
// MachineModuleInfoImpl.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_MACHINEMODULEINFOIMPLS_H
#define LLVM_CODEGEN_MACHINEMODULEINFOIMPLS_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include <cassert>
namespace llvm {
class MCSymbol;
/// MachineModuleInfoMachO - This is a MachineModuleInfoImpl implementation
/// for MachO targets.
class MachineModuleInfoMachO : public MachineModuleInfoImpl {
/// GVStubs - Darwin '$non_lazy_ptr' stubs. The key is something like
/// "Lfoo$non_lazy_ptr", the value is something like "_foo". The extra bit
/// is true if this GV is external.
DenseMap<MCSymbol *, StubValueTy> GVStubs;
/// ThreadLocalGVStubs - Darwin '$non_lazy_ptr' stubs. The key is something
/// like "Lfoo$non_lazy_ptr", the value is something like "_foo". The extra
/// bit is true if this GV is external.
DenseMap<MCSymbol *, StubValueTy> ThreadLocalGVStubs;
/// Darwin '$auth_ptr' stubs. The key is the stub symbol, like
/// "Lfoo$auth_ptr$ib$12". The value is the MCExpr representing that
/// signed pointer, something like "_foo@AUTH(ib, 12)".
DenseMap<MCSymbol *, const MCExpr *> AuthPtrStubs;
virtual void anchor(); // Out of line virtual method.
public:
MachineModuleInfoMachO(const MachineModuleInfo &) {}
StubValueTy &getGVStubEntry(MCSymbol *Sym) {
assert(Sym && "Key cannot be null");
return GVStubs[Sym];
}
StubValueTy &getThreadLocalGVStubEntry(MCSymbol *Sym) {
assert(Sym && "Key cannot be null");
return ThreadLocalGVStubs[Sym];
}
const MCExpr *&getAuthPtrStubEntry(MCSymbol *Sym) {
assert(Sym && "Key cannot be null");
return AuthPtrStubs[Sym];
}
/// Accessor methods to return the set of stubs in sorted order.
SymbolListTy GetGVStubList() { return getSortedStubs(GVStubs); }
SymbolListTy GetThreadLocalGVStubList() {
return getSortedStubs(ThreadLocalGVStubs);
}
ExprStubListTy getAuthGVStubList() {
return getSortedExprStubs(AuthPtrStubs);
}
};
/// MachineModuleInfoELF - This is a MachineModuleInfoImpl implementation
/// for ELF targets.
class MachineModuleInfoELF : public MachineModuleInfoImpl {
/// GVStubs - These stubs are used to materialize global addresses in PIC
/// mode.
DenseMap<MCSymbol *, StubValueTy> GVStubs;
/// AuthPtrStubs - These stubs are used to materialize signed addresses for
/// extern_weak symbols.
DenseMap<MCSymbol *, const MCExpr *> AuthPtrStubs;
virtual void anchor(); // Out of line virtual method.
public:
MachineModuleInfoELF(const MachineModuleInfo &) {}
StubValueTy &getGVStubEntry(MCSymbol *Sym) {
assert(Sym && "Key cannot be null");
return GVStubs[Sym];
}
const MCExpr *&getAuthPtrStubEntry(MCSymbol *Sym) {
assert(Sym && "Key cannot be null");
return AuthPtrStubs[Sym];
}
/// Accessor methods to return the set of stubs in sorted order.
SymbolListTy GetGVStubList() { return getSortedStubs(GVStubs); }
ExprStubListTy getAuthGVStubList() {
return getSortedExprStubs(AuthPtrStubs);
}
};
/// MachineModuleInfoCOFF - This is a MachineModuleInfoImpl implementation
/// for COFF targets.
class MachineModuleInfoCOFF : public MachineModuleInfoImpl {
/// GVStubs - These stubs are used to materialize global addresses in PIC
/// mode.
DenseMap<MCSymbol *, StubValueTy> GVStubs;
virtual void anchor(); // Out of line virtual method.
public:
MachineModuleInfoCOFF(const MachineModuleInfo &) {}
StubValueTy &getGVStubEntry(MCSymbol *Sym) {
assert(Sym && "Key cannot be null");
return GVStubs[Sym];
}
/// Accessor methods to return the set of stubs in sorted order.
SymbolListTy GetGVStubList() { return getSortedStubs(GVStubs); }
};
/// MachineModuleInfoWasm - This is a MachineModuleInfoImpl implementation
/// for Wasm targets.
class MachineModuleInfoWasm : public MachineModuleInfoImpl {
virtual void anchor(); // Out of line virtual method.
public:
MachineModuleInfoWasm(const MachineModuleInfo &) {}
SetVector<StringRef> MachineSymbolsUsed;
};
} // end namespace llvm
#endif // LLVM_CODEGEN_MACHINEMODULEINFOIMPLS_H
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