зеркало из https://github.com/mozilla/gecko-dev.git
145 строки
3.4 KiB
C++
145 строки
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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// Symbols.cpp
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//
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// Scott M. Silver
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//
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#include <string.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include "Debugee.h"
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#include <assert.h>
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#include "Symbols.h"
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bool lookupLiteral(const char* inSymbol, PrintableValue& outValue);
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bool lookupRegister(DebugeeThread& inThread, const char* inSymbol, PrintableValue& outValue);
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// the mother of all symbol lookups
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// this searches through all known ways
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// of figuring out what the hell a symbol is
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bool
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lookupSymbol(DebugeeThread& inThread, const char* inSymbol, PrintableValue& outValue)
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{
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if (lookupLiteral(inSymbol, outValue))
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return(true);
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if (lookupRegister(inThread, inSymbol, outValue))
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return (true);
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void *address;
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if ((address = inThread.getProcess().getAddress(inSymbol)))
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{
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outValue.fmtString = "%p";
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outValue.value = address;
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return (true);
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}
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return (false);
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}
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bool
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lookupLiteral(const char* inString, PrintableValue& outValue)
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{
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const char* lc = inString + strlen(inString); // point to 0
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Int32 value;
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char* endp;
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if (*inString == '\0')
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return (false);
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if (*inString == '#')
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{
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value = strtol(inString + 1, &endp, 10);
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if (endp == lc)
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{
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outValue.value = (void*) value;
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outValue.fmtString = "#%d";
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return (true);
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}
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}
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else if (*inString == '$')
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{
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value = strtol(inString + 1, &endp, 16);
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if (endp == lc)
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{
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outValue.value = (void*) value;
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outValue.fmtString = "0x%x";
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return (true);
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}
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}
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else
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{
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value = strtol(inString, &endp, 16);
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if (endp == lc)
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{
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outValue.value = (void*) value;
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outValue.fmtString = "0x%x";
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return (true);
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}
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}
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return (false);
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}
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bool
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lookupRegister(DebugeeThread& inThread, const char* inSymbol, PrintableValue& outValue)
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{
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char* symbol = strdup(inSymbol);
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char* cp = symbol;
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assert(symbol);
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// lowercase the string
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while(*cp)
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*cp++ = tolower(*cp);
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outValue.fmtString = "%.8X";
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bool found = true;
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CONTEXT context;
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assert(inThread.getContext(CONTEXT_INTEGER | CONTEXT_CONTROL, context));
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if (!strcmp("edi", symbol))
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outValue.value = (void*) context.Edi;
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else if (!strcmp("esi", symbol))
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outValue.value = (void*) context.Esi;
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else if (!strcmp("ebx", symbol))
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outValue.value = (void*) context.Ebx;
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else if (!strcmp("edx", symbol))
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outValue.value = (void*) context.Edx;
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else if (!strcmp("ecx", symbol))
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outValue.value = (void*) context.Ecx;
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else if (!strcmp("eax", symbol))
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outValue.value = (void*) context.Eax;
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else if (!strcmp("ebp", symbol))
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outValue.value = (void*) context.Ebp;
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else if (!strcmp("eip", symbol))
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outValue.value = (void*) context.Eip;
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else if (!strcmp("esp", symbol))
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outValue.value = (void*) context.Esp;
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else
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found = false;
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free(symbol);
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return (found);
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}
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