6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-26 05:25:47 +00:00
Code Issues Projects Releases Wiki Activity

Implement the StartProc and EndProc Win64 EH methods on the base MCStreamer.

Browse Source 
Based largely on Rafael Espindola's work on CFI. Other methods soon to follow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131623 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Charles Davis
2011-05-19 02:49:00 +00:00
parent fa89218a43
commit 0855bc5b97
2 changed files with 34 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
include/llvm/MC/MCStreamer.h
View File

@@ -18,6 +18,7 @@
#include "llvm/Support/DataTypes.h" #include "llvm/Support/DataTypes.h"
#include "llvm/MC/MCDirectives.h" #include "llvm/MC/MCDirectives.h"
#include "llvm/MC/MCDwarf.h" #include "llvm/MC/MCDwarf.h"
#include "llvm/MC/MCWin64EH.h"
namespace llvm { namespace llvm {
class MCAsmInfo; class MCAsmInfo;
@@ -57,6 +58,10 @@ namespace llvm {
MCDwarfFrameInfo *getCurrentFrameInfo(); MCDwarfFrameInfo *getCurrentFrameInfo();
void EnsureValidFrame(); void EnsureValidFrame();
std::vector<MCWin64EHUnwindInfo> W64UnwindInfos;
MCWin64EHUnwindInfo *getCurrentW64UnwindInfo();
void EnsureValidW64UnwindInfo();
const MCSymbol* LastNonPrivate; const MCSymbol* LastNonPrivate;
/// SectionStack - This is stack of current and previous section /// SectionStack - This is stack of current and previous section

37
lib/MC/MCStreamer.cpp
View File

@@ -310,16 +310,37 @@ void MCStreamer::EmitCFISameValue(int64_t Register) {
CurFrame->Instructions.push_back(Instruction); CurFrame->Instructions.push_back(Instruction);
} }
void MCStreamer::EmitWin64EHStartProc(MCSymbol *Symbol, MCSymbol *EHandler) MCWin64EHUnwindInfo *MCStreamer::getCurrentW64UnwindInfo() {
{ if (W64UnwindInfos.empty())
errs() << "Not implemented yet\n"; return NULL;
abort(); return &W64UnwindInfos.back();
} }
void MCStreamer::EmitWin64EHEndProc() void MCStreamer::EnsureValidW64UnwindInfo() {
{ MCWin64EHUnwindInfo *CurFrame = getCurrentW64UnwindInfo();
errs() << "Not implemented yet\n"; if (!CurFrame || CurFrame->End)
abort(); report_fatal_error("No open Win64 EH frame function!");
}
void MCStreamer::EmitWin64EHStartProc(MCSymbol *Symbol, MCSymbol *EHandler) {
MCWin64EHUnwindInfo *CurFrame = getCurrentW64UnwindInfo();
if (CurFrame && !CurFrame->End)
report_fatal_error("Starting a function before ending the previous one!");
MCWin64EHUnwindInfo Frame;
Frame.Begin = getContext().CreateTempSymbol();
Frame.Function = Symbol;
Frame.ExceptionHandler = EHandler;
EmitLabel(Frame.Begin);
W64UnwindInfos.push_back(Frame);
}
void MCStreamer::EmitWin64EHEndProc() {
EnsureValidW64UnwindInfo();
MCWin64EHUnwindInfo *CurFrame = getCurrentW64UnwindInfo();
if (CurFrame->Chained)
report_fatal_error("Not all chained regions terminated!");
CurFrame->End = getContext().CreateTempSymbol();
EmitLabel(CurFrame->End);
} }
void MCStreamer::EmitWin64EHStartChained() void MCStreamer::EmitWin64EHStartChained()