зеркало из https://github.com/mozilla/gecko-dev.git
65 строки
2.1 KiB
C
65 строки
2.1 KiB
C
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
||
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
||
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
||
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
||
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
||
|
|
|
||
|
|
#ifndef LulDwarfSummariser_h
|
||
|
|
#define LulDwarfSummariser_h
|
||
|
|
|
||
|
|
#include "LulMainInt.h"
|
||
|
|
|
||
|
|
namespace lul {
|
||
|
|
|
||
|
|
class Summariser {
|
||
|
|
public:
|
||
|
|
Summariser(SecMap* aSecMap, uintptr_t aTextBias, void (*aLog)(const char*));
|
||
|
|
|
||
|
|
virtual void Entry(uintptr_t aAddress, uintptr_t aLength);
|
||
|
|
virtual void End();
|
||
|
|
|
||
|
|
// Tell the summariser that the value for |aNewReg| at |aAddress| is
|
||
|
|
// recovered using the LExpr that can be constructed using the
|
||
|
|
// components |how|, |oldReg| and |offset|. The summariser will
|
||
|
|
// inspect the components and may reject them for various reasons,
|
||
|
|
// but the hope is that it will find them acceptable and record this
|
||
|
|
// rule permanently.
|
||
|
|
virtual void Rule(uintptr_t aAddress, int aNewReg, LExprHow how,
|
||
|
|
int16_t oldReg, int64_t offset);
|
||
|
|
|
||
|
|
virtual uint32_t AddPfxInstr(PfxInstr pfxi);
|
||
|
|
|
||
|
|
// Send output to the logging sink, for debugging.
|
||
|
|
virtual void Log(const char* str) { mLog(str); }
|
||
|
|
|
||
|
|
private:
|
||
|
|
// The SecMap in which we park the finished summaries (RuleSets) and
|
||
|
|
// also any PfxInstrs derived from Dwarf expressions.
|
||
|
|
SecMap* mSecMap;
|
||
|
|
|
||
|
|
// Running state for the current summary (RuleSet) under construction.
|
||
|
|
RuleSet mCurrRules;
|
||
|
|
|
||
|
|
// The start of the address range to which the RuleSet under
|
||
|
|
// construction applies.
|
||
|
|
uintptr_t mCurrAddr;
|
||
|
|
|
||
|
|
// The highest address, plus one, for which the RuleSet under
|
||
|
|
// construction could possibly apply. If there are no further
|
||
|
|
// incoming events then mCurrRules will eventually be emitted
|
||
|
|
// as-is, for the range mCurrAddr.. mMax1Addr - 1, if that is
|
||
|
|
// nonempty.
|
||
|
|
uintptr_t mMax1Addr;
|
||
|
|
|
||
|
|
// The bias value (to add to the SVMAs, to get AVMAs) to be used
|
||
|
|
// when adding entries into mSecMap.
|
||
|
|
uintptr_t mTextBias;
|
||
|
|
|
||
|
|
// A logging sink, for debugging.
|
||
|
|
void (*mLog)(const char* aFmt);
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace lul
|
||
|
|
|
||
|
|
#endif // LulDwarfSummariser_h
|