mirror of
https://github.com/RPCS3/llvm.git
synced 2026-01-31 01:25:19 +01:00
b73f47d91f
Summary:
There are two registers encoded in the S_FRAMEPROC flags: one for locals
and one for parameters. The encoding is described by the
ExpandEncodedBasePointerReg function in cvinfo.h. Two bits are used to
indicate one of four possible values:
0: no register - Used when there are no variables.
1: SP / standard - Variables are stored relative to the standard SP
for the ISA.
2: FP - Variables are addressed relative to the ISA frame
pointer, i.e. EBP on x86. If realignment is required, parameters
use this. If a dynamic alloca is used, locals will be EBP relative.
3: Alternative - Variables are stored relative to some alternative
third callee-saved register. This is required to address highly
aligned locals when there are dynamic stack adjustments. In this
case, both the incoming SP saved in the standard FP and the current
SP are at some dynamic offset from the locals. LLVM uses ESI in
this case, MSVC uses EBX.
Most of the changes in this patch are to pass around the CPU so that we
can decode these into real, named architectural registers.
Subscribers: hiraditya
Differential Revision: https://reviews.llvm.org/D51894
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@341999 91177308-0d34-0410-b5e6-96231b3b80d8
60 lines
2.0 KiB
C++
60 lines
2.0 KiB
C++
//===-- SymbolDumper.h - CodeView symbol info dumper ------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_DEBUGINFO_CODEVIEW_SYMBOLDUMPER_H
|
|
#define LLVM_DEBUGINFO_CODEVIEW_SYMBOLDUMPER_H
|
|
|
|
#include "llvm/ADT/ArrayRef.h"
|
|
#include "llvm/ADT/StringSet.h"
|
|
#include "llvm/DebugInfo/CodeView/SymbolDumpDelegate.h"
|
|
#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
|
|
#include "llvm/DebugInfo/CodeView/TypeIndex.h"
|
|
|
|
namespace llvm {
|
|
class ScopedPrinter;
|
|
|
|
namespace codeview {
|
|
class TypeCollection;
|
|
|
|
/// Dumper for CodeView symbol streams found in COFF object files and PDB files.
|
|
class CVSymbolDumper {
|
|
public:
|
|
CVSymbolDumper(ScopedPrinter &W, TypeCollection &Types,
|
|
CodeViewContainer Container,
|
|
std::unique_ptr<SymbolDumpDelegate> ObjDelegate, CPUType CPU,
|
|
bool PrintRecordBytes)
|
|
: W(W), Types(Types), Container(Container),
|
|
ObjDelegate(std::move(ObjDelegate)), CompilationCPUType(CPU),
|
|
PrintRecordBytes(PrintRecordBytes) {}
|
|
|
|
/// Dumps one type record. Returns false if there was a type parsing error,
|
|
/// and true otherwise. This should be called in order, since the dumper
|
|
/// maintains state about previous records which are necessary for cross
|
|
/// type references.
|
|
Error dump(CVRecord<SymbolKind> &Record);
|
|
|
|
/// Dumps the type records in Data. Returns false if there was a type stream
|
|
/// parse error, and true otherwise.
|
|
Error dump(const CVSymbolArray &Symbols);
|
|
|
|
CPUType getCompilationCPUType() const { return CompilationCPUType; }
|
|
|
|
private:
|
|
ScopedPrinter &W;
|
|
TypeCollection &Types;
|
|
CodeViewContainer Container;
|
|
std::unique_ptr<SymbolDumpDelegate> ObjDelegate;
|
|
CPUType CompilationCPUType;
|
|
bool PrintRecordBytes;
|
|
};
|
|
} // end namespace codeview
|
|
} // end namespace llvm
|
|
|
|
#endif // LLVM_DEBUGINFO_CODEVIEW_SYMBOLDUMPER_H
|