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MC: rename Win64EHFrameInfo to WinEH::FrameInfo

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The frame information stored in this structure is driven by the requirements for
Windows NT unwinding rather than Windows 64 specifically.  As a result, this
type can be shared across multiple architectures (ARM, AXP, MIPS, PPC, SH).
Rename this class in preparation for adding support for supporting unwinding
information for Windows on ARM.

Take the opportunity to constify the members as everything except the
ChainedParent is read-only.  This required some adjustment to the label
handling.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214663 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool
2014-08-03 18:51:17 +00:00
parent fc65cf649c
commit 2aded1f5c7
6 changed files with 78 additions and 50 deletions
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35
include/llvm/MC/MCWinEH.h
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@@ -10,6 +10,8 @@
#ifndef LLVM_MC_MCWINEH_H
#define LLVM_MC_MCWINEH_H
#include <vector>
namespace llvm {
class MCSymbol;
@@ -23,6 +25,39 @@ struct Instruction {
Instruction(unsigned Op, MCSymbol *L, unsigned Reg, unsigned Off)
: Label(L), Offset(Off), Register(Reg), Operation(Op) {}
};
struct FrameInfo {
const MCSymbol *Begin;
const MCSymbol *End;
const MCSymbol *ExceptionHandler;
const MCSymbol *Function;
const MCSymbol *PrologEnd;
const MCSymbol *Symbol;
bool HandlesUnwind;
bool HandlesExceptions;
int LastFrameInst;
const FrameInfo *ChainedParent;
std::vector<Instruction> Instructions;
FrameInfo()
: Begin(nullptr), End(nullptr), ExceptionHandler(nullptr),
Function(nullptr), PrologEnd(nullptr), Symbol(nullptr),
HandlesUnwind(false), HandlesExceptions(false), LastFrameInst(-1),
ChainedParent(nullptr), Instructions() {}
FrameInfo(const MCSymbol *Function, const MCSymbol *BeginFuncEHLabel)
: Begin(BeginFuncEHLabel), End(nullptr), ExceptionHandler(nullptr),
Function(Function), PrologEnd(nullptr), Symbol(nullptr),
HandlesUnwind(false), HandlesExceptions(false), LastFrameInst(-1),
ChainedParent(nullptr), Instructions() {}
FrameInfo(const MCSymbol *Function, const MCSymbol *BeginFuncEHLabel,
const FrameInfo *ChainedParent)
: Begin(BeginFuncEHLabel), End(nullptr), ExceptionHandler(nullptr),
Function(Function), PrologEnd(nullptr), Symbol(nullptr),
HandlesUnwind(false), HandlesExceptions(false), LastFrameInst(-1),
ChainedParent(ChainedParent), Instructions() {}
};
}
}