forked from OSchip/llvm-project
70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
//===-- RuntimeInfo.cpp - Compute and cache info about running program ----===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the RuntimeInfo and related classes, by querying and
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// cachine information from the running inferior process.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Debugger/InferiorProcess.h"
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#include "llvm/Debugger/ProgramInfo.h"
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#include "llvm/Debugger/RuntimeInfo.h"
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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// StackFrame class implementation
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StackFrame::StackFrame(RuntimeInfo &ri, void *ParentFrameID)
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: RI(ri), SourceInfo(0) {
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FrameID = RI.getInferiorProcess().getPreviousFrame(ParentFrameID);
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if (FrameID == 0) throw "Stack frame does not exist!";
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// Compute lazily as needed.
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FunctionDesc = 0;
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}
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const GlobalVariable *StackFrame::getFunctionDesc() {
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if (FunctionDesc == 0)
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FunctionDesc = RI.getInferiorProcess().getSubprogramDesc(FrameID);
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return FunctionDesc;
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}
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/// getSourceLocation - Return the source location that this stack frame is
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/// sitting at.
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void StackFrame::getSourceLocation(unsigned &lineNo, unsigned &colNo,
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const SourceFileInfo *&sourceInfo) {
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if (SourceInfo == 0) {
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const GlobalVariable *SourceDesc = 0;
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RI.getInferiorProcess().getFrameLocation(FrameID, LineNo,ColNo, SourceDesc);
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SourceInfo = &RI.getProgramInfo().getSourceFile(SourceDesc);
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}
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lineNo = LineNo;
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colNo = ColNo;
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sourceInfo = SourceInfo;
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}
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//===----------------------------------------------------------------------===//
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// RuntimeInfo class implementation
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/// materializeFrame - Create and process all frames up to and including the
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/// specified frame number. This throws an exception if the specified frame
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/// ID is nonexistant.
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void RuntimeInfo::materializeFrame(unsigned ID) {
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assert(ID >= CallStack.size() && "no need to materialize this frame!");
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void *CurFrame = 0;
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if (!CallStack.empty())
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CurFrame = CallStack.back().getFrameID();
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while (CallStack.size() <= ID) {
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CallStack.push_back(StackFrame(*this, CurFrame));
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CurFrame = CallStack.back().getFrameID();
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}
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}
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