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Splitting up the symbol database code to make it easier to work with.

This commit is contained in:
Ben Vanik 2013-02-03 00:50:39 -08:00
parent 63f0785ecf
commit a020072ed7
11 changed files with 773 additions and 600 deletions
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220
include/xenia/cpu/sdb.h
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@ -10,221 +10,9 @@
#ifndef XENIA_CPU_SDB_H_
#define XENIA_CPU_SDB_H_
#include <xenia/core.h>
#include <list>
#include <map>
#include <vector>
#include <xenia/kernel/export.h>
#include <xenia/kernel/xex2.h>
namespace xe {
namespace cpu {
namespace sdb {
class FunctionSymbol;
class VariableSymbol;
class FunctionCall {
public:
uint32_t address;
FunctionSymbol* source;
FunctionSymbol* target;
};
class VariableAccess {
public:
uint32_t address;
FunctionSymbol* source;
VariableSymbol* target;
};
class Symbol {
public:
enum SymbolType {
Function = 0,
Variable = 1,
ExceptionEntry = 2,
};
virtual ~Symbol() {}
SymbolType symbol_type;
protected:
Symbol(SymbolType type) : symbol_type(type) {}
};
class ExceptionEntrySymbol;
class FunctionBlock {
public:
enum TargetType {
kTargetUnknown = 0,
kTargetBlock = 1,
kTargetFunction = 2,
kTargetLR = 3,
kTargetCTR = 4,
kTargetNone = 5,
};
FunctionBlock();
uint32_t start_address;
uint32_t end_address;
std::vector<FunctionBlock*> incoming_blocks;
TargetType outgoing_type;
uint32_t outgoing_address;
union {
FunctionSymbol* outgoing_function;
FunctionBlock* outgoing_block;
};
};
class FunctionSymbol : public Symbol {
public:
enum FunctionType {
Unknown = 0,
Kernel = 1,
User = 2,
};
enum Flags {
kFlagSaveGprLr = 1 << 1,
kFlagRestGprLr = 1 << 2,
};
FunctionSymbol();
virtual ~FunctionSymbol();
FunctionBlock* GetBlock(uint32_t address);
FunctionBlock* SplitBlock(uint32_t address);
uint32_t start_address;
uint32_t end_address;
char* name;
FunctionType type;
uint32_t flags;
kernel::KernelExport* kernel_export;
ExceptionEntrySymbol* ee;
std::vector<FunctionCall*> incoming_calls;
std::vector<FunctionCall*> outgoing_calls;
std::vector<VariableAccess*> variable_accesses;
std::map<uint32_t, FunctionBlock*> blocks;
};
class VariableSymbol : public Symbol {
public:
VariableSymbol();
virtual ~VariableSymbol();
uint32_t address;
char* name;
kernel::KernelExport* kernel_export;
};
class ExceptionEntrySymbol : public Symbol {
public:
ExceptionEntrySymbol();
virtual ~ExceptionEntrySymbol() {}
uint32_t address;
FunctionSymbol* function;
};
class SymbolDatabase {
public:
SymbolDatabase(xe_memory_ref memory, kernel::ExportResolver* export_resolver);
virtual ~SymbolDatabase();
virtual int Analyze();
ExceptionEntrySymbol* GetOrInsertExceptionEntry(uint32_t address);
FunctionSymbol* GetOrInsertFunction(uint32_t address);
VariableSymbol* GetOrInsertVariable(uint32_t address);
FunctionSymbol* GetFunction(uint32_t address);
VariableSymbol* GetVariable(uint32_t address);
Symbol* GetSymbol(uint32_t address);
int GetAllVariables(std::vector<VariableSymbol*>& variables);
int GetAllFunctions(std::vector<FunctionSymbol*>& functions);
void Write(const char* file_name);
void Dump();
void DumpFunctionBlocks(FunctionSymbol* fn);
protected:
typedef std::tr1::unordered_map<uint32_t, Symbol*> SymbolMap;
typedef std::list<FunctionSymbol*> FunctionList;
int AnalyzeFunction(FunctionSymbol* fn);
int CompleteFunctionGraph(FunctionSymbol* fn);
bool FillHoles();
int FlushQueue();
bool IsRestGprLr(uint32_t addr);
virtual uint32_t GetEntryPoint() = 0;
virtual bool IsValueInTextRange(uint32_t value) = 0;
xe_memory_ref memory_;
kernel::ExportResolver* export_resolver_;
size_t function_count_;
size_t variable_count_;
SymbolMap symbols_;
FunctionList scan_queue_;
};
class RawSymbolDatabase : public SymbolDatabase {
public:
RawSymbolDatabase(xe_memory_ref memory,
kernel::ExportResolver* export_resolver,
uint32_t start_address, uint32_t end_address);
virtual ~RawSymbolDatabase();
private:
virtual uint32_t GetEntryPoint();
virtual bool IsValueInTextRange(uint32_t value);
uint32_t start_address_;
uint32_t end_address_;
};
class XexSymbolDatabase : public SymbolDatabase {
public:
XexSymbolDatabase(xe_memory_ref memory,
kernel::ExportResolver* export_resolver,
xe_xex2_ref xex);
virtual ~XexSymbolDatabase();
virtual int Analyze();
private:
int FindGplr();
int AddImports(const xe_xex2_import_library_t *library);
int AddMethodHints();
virtual uint32_t GetEntryPoint();
virtual bool IsValueInTextRange(uint32_t value);
xe_xex2_ref xex_;
};
} // namespace sdb
} // namespace cpu
} // namespace xe
#include <xenia/cpu/sdb/raw_symbol_database.h>
#include <xenia/cpu/sdb/symbol.h>
#include <xenia/cpu/sdb/symbol_database.h>
#include <xenia/cpu/sdb/xex_symbol_database.h>
#endif // XENIA_CPU_SDB_H_

42
include/xenia/cpu/sdb/raw_symbol_database.h Normal file
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@ -0,0 +1,42 @@
/**
******************************************************************************
* Xenia : Xbox 360 Emulator Research Project *
******************************************************************************
* Copyright 2013 Ben Vanik. All rights reserved. *
* Released under the BSD license - see LICENSE in the root for more details. *
******************************************************************************
*/
#ifndef XENIA_CPU_SDB_RAW_SYMBOL_DATABASE_H_
#define XENIA_CPU_SDB_RAW_SYMBOL_DATABASE_H_
#include <xenia/cpu/sdb/symbol_database.h>
namespace xe {
namespace cpu {
namespace sdb {
class RawSymbolDatabase : public SymbolDatabase {
public:
RawSymbolDatabase(xe_memory_ref memory,
kernel::ExportResolver* export_resolver,
uint32_t start_address, uint32_t end_address);
virtual ~RawSymbolDatabase();
private:
virtual uint32_t GetEntryPoint();
virtual bool IsValueInTextRange(uint32_t value);
uint32_t start_address_;
uint32_t end_address_;
};
} // namespace sdb
} // namespace cpu
} // namespace xe
#endif // XENIA_CPU_SDB_RAW_SYMBOL_DATABASE_H_

148
include/xenia/cpu/sdb/symbol.h Normal file
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@ -0,0 +1,148 @@
/**
******************************************************************************
* Xenia : Xbox 360 Emulator Research Project *
******************************************************************************
* Copyright 2013 Ben Vanik. All rights reserved. *
* Released under the BSD license - see LICENSE in the root for more details. *
******************************************************************************
*/
#ifndef XENIA_CPU_SDB_SYMBOL_H_
#define XENIA_CPU_SDB_SYMBOL_H_
#include <xenia/core.h>
#include <map>
#include <vector>
#include <xenia/kernel/export.h>
namespace xe {
namespace cpu {
namespace sdb {
class FunctionSymbol;
class VariableSymbol;
class FunctionCall {
public:
uint32_t address;
FunctionSymbol* source;
FunctionSymbol* target;
};
class VariableAccess {
public:
uint32_t address;
FunctionSymbol* source;
VariableSymbol* target;
};
class Symbol {
public:
enum SymbolType {
Function = 0,
Variable = 1,
ExceptionEntry = 2,
};
virtual ~Symbol() {}
SymbolType symbol_type;
protected:
Symbol(SymbolType type) : symbol_type(type) {}
};
class ExceptionEntrySymbol;
class FunctionBlock {
public:
enum TargetType {
kTargetUnknown = 0,
kTargetBlock = 1,
kTargetFunction = 2,
kTargetLR = 3,
kTargetCTR = 4,
kTargetNone = 5,
};
FunctionBlock();
uint32_t start_address;
uint32_t end_address;
std::vector<FunctionBlock*> incoming_blocks;
TargetType outgoing_type;
uint32_t outgoing_address;
union {
FunctionSymbol* outgoing_function;
FunctionBlock* outgoing_block;
};
};
class FunctionSymbol : public Symbol {
public:
enum FunctionType {
Unknown = 0,
Kernel = 1,
User = 2,
};
enum Flags {
kFlagSaveGprLr = 1 << 1,
kFlagRestGprLr = 1 << 2,
};
FunctionSymbol();
virtual ~FunctionSymbol();
FunctionBlock* GetBlock(uint32_t address);
FunctionBlock* SplitBlock(uint32_t address);
uint32_t start_address;
uint32_t end_address;
char* name;
FunctionType type;
uint32_t flags;
kernel::KernelExport* kernel_export;
ExceptionEntrySymbol* ee;
std::vector<FunctionCall*> incoming_calls;
std::vector<FunctionCall*> outgoing_calls;
std::vector<VariableAccess*> variable_accesses;
std::map<uint32_t, FunctionBlock*> blocks;
};
class VariableSymbol : public Symbol {
public:
VariableSymbol();
virtual ~VariableSymbol();
uint32_t address;
char* name;
kernel::KernelExport* kernel_export;
};
class ExceptionEntrySymbol : public Symbol {
public:
ExceptionEntrySymbol();
virtual ~ExceptionEntrySymbol() {}
uint32_t address;
FunctionSymbol* function;
};
} // namespace sdb
} // namespace cpu
} // namespace xe
#endif // XENIA_CPU_SDB_SYMBOL_H_

76
include/xenia/cpu/sdb/symbol_database.h Normal file
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@ -0,0 +1,76 @@
/**
******************************************************************************
* Xenia : Xbox 360 Emulator Research Project *
******************************************************************************
* Copyright 2013 Ben Vanik. All rights reserved. *
* Released under the BSD license - see LICENSE in the root for more details. *
******************************************************************************
*/
#ifndef XENIA_CPU_SDB_SYMBOL_DATABASE_H_
#define XENIA_CPU_SDB_SYMBOL_DATABASE_H_
#include <xenia/core.h>
#include <list>
#include <map>
#include <vector>
#include <xenia/kernel/export.h>
#include <xenia/cpu/sdb/symbol.h>
namespace xe {
namespace cpu {
namespace sdb {
class SymbolDatabase {
public:
SymbolDatabase(xe_memory_ref memory, kernel::ExportResolver* export_resolver);
virtual ~SymbolDatabase();
virtual int Analyze();
ExceptionEntrySymbol* GetOrInsertExceptionEntry(uint32_t address);
FunctionSymbol* GetOrInsertFunction(uint32_t address);
VariableSymbol* GetOrInsertVariable(uint32_t address);
FunctionSymbol* GetFunction(uint32_t address);
VariableSymbol* GetVariable(uint32_t address);
Symbol* GetSymbol(uint32_t address);
int GetAllVariables(std::vector<VariableSymbol*>& variables);
int GetAllFunctions(std::vector<FunctionSymbol*>& functions);
void Write(const char* file_name);
void Dump();
void DumpFunctionBlocks(FunctionSymbol* fn);
protected:
typedef std::tr1::unordered_map<uint32_t, Symbol*> SymbolMap;
typedef std::list<FunctionSymbol*> FunctionList;
int AnalyzeFunction(FunctionSymbol* fn);
int CompleteFunctionGraph(FunctionSymbol* fn);
bool FillHoles();
int FlushQueue();
bool IsRestGprLr(uint32_t addr);
virtual uint32_t GetEntryPoint() = 0;
virtual bool IsValueInTextRange(uint32_t value) = 0;
xe_memory_ref memory_;
kernel::ExportResolver* export_resolver_;
size_t function_count_;
size_t variable_count_;
SymbolMap symbols_;
FunctionList scan_queue_;
};
} // namespace sdb
} // namespace cpu
} // namespace xe
#endif // XENIA_CPU_SDB_SYMBOL_DATABASE_H_

49
include/xenia/cpu/sdb/xex_symbol_database.h Normal file
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@ -0,0 +1,49 @@
/**
******************************************************************************
* Xenia : Xbox 360 Emulator Research Project *
******************************************************************************
* Copyright 2013 Ben Vanik. All rights reserved. *
* Released under the BSD license - see LICENSE in the root for more details. *
******************************************************************************
*/
#ifndef XENIA_CPU_SDB_XEX_SYMBOL_DATABASE_H_
#define XENIA_CPU_SDB_XEX_SYMBOL_DATABASE_H_
#include <xenia/cpu/sdb/symbol_database.h>
#include <xenia/kernel/xex2.h>
namespace xe {
namespace cpu {
namespace sdb {
class XexSymbolDatabase : public SymbolDatabase {
public:
XexSymbolDatabase(xe_memory_ref memory,
kernel::ExportResolver* export_resolver,
xe_xex2_ref xex);
virtual ~XexSymbolDatabase();
virtual int Analyze();
private:
int FindGplr();
int AddImports(const xe_xex2_import_library_t *library);
int AddMethodHints();
virtual uint32_t GetEntryPoint();
virtual bool IsValueInTextRange(uint32_t value);
xe_xex2_ref xex_;
};
} // namespace sdb
} // namespace cpu
} // namespace xe
#endif // XENIA_CPU_SDB_XEX_SYMBOL_DATABASE_H_

41
src/cpu/sdb/raw_symbol_database.cc Normal file
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@ -0,0 +1,41 @@
/**
******************************************************************************
* Xenia : Xbox 360 Emulator Research Project *
******************************************************************************
* Copyright 2013 Ben Vanik. All rights reserved. *
* Released under the BSD license - see LICENSE in the root for more details. *
******************************************************************************
*/
#include <xenia/cpu/sdb/raw_symbol_database.h>
#include <xenia/cpu/ppc/instr.h>
using namespace std;
using namespace xe;
using namespace xe::cpu;
using namespace xe::cpu::ppc;
using namespace xe::cpu::sdb;
using namespace xe::kernel;
RawSymbolDatabase::RawSymbolDatabase(
xe_memory_ref memory, ExportResolver* export_resolver,
uint32_t start_address, uint32_t end_address) :
SymbolDatabase(memory, export_resolver) {
start_address_ = start_address;
end_address_ = end_address;
}
RawSymbolDatabase::~RawSymbolDatabase() {
}
uint32_t RawSymbolDatabase::GetEntryPoint() {
return start_address_;
}
bool RawSymbolDatabase::IsValueInTextRange(uint32_t value) {
return value >= start_address_ && value < end_address_;
}

9
src/cpu/sdb/sources.gypi Normal file
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@ -0,0 +1,9 @@
# Copyright 2013 Ben Vanik. All Rights Reserved.
{
'sources': [
'raw_symbol_database.cc',
'symbol.cc',
'symbol_database.cc',
'xex_symbol_database.cc',
]
}

95
src/cpu/sdb/symbol.cc Normal file
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@ -0,0 +1,95 @@
/**
******************************************************************************
* Xenia : Xbox 360 Emulator Research Project *
******************************************************************************
* Copyright 2013 Ben Vanik. All rights reserved. *
* Released under the BSD license - see LICENSE in the root for more details. *
******************************************************************************
*/
#include <xenia/cpu/sdb/symbol.h>
#include <xenia/cpu/ppc/instr.h>
using namespace std;
using namespace xe;
using namespace xe::cpu;
using namespace xe::cpu::ppc;
using namespace xe::cpu::sdb;
using namespace xe::kernel;
FunctionBlock::FunctionBlock() :
start_address(0), end_address(0),
outgoing_type(kTargetUnknown), outgoing_address(0),
outgoing_function(0) {
}
FunctionSymbol::FunctionSymbol() :
Symbol(Function),
start_address(0), end_address(0), name(0),
type(Unknown), flags(0),
kernel_export(0), ee(0) {
}
FunctionSymbol::~FunctionSymbol() {
delete name;
for (std::map<uint32_t, FunctionBlock*>::iterator it = blocks.begin();
it != blocks.end(); ++it) {
delete it->second;
}
}
FunctionBlock* FunctionSymbol::GetBlock(uint32_t address) {
std::map<uint32_t, FunctionBlock*>::iterator it = blocks.find(address);
if (it != blocks.end()) {
return it->second;
}
return NULL;
}
FunctionBlock* FunctionSymbol::SplitBlock(uint32_t address) {
// Scan to find the block that contains the address.
for (std::map<uint32_t, FunctionBlock*>::iterator it = blocks.begin();
it != blocks.end(); ++it) {
FunctionBlock* block = it->second;
if (address == block->start_address) {
// No need for a split.
return block;
} else if (address >= block->start_address &&
address <= block->end_address + 4) {
// Inside this block.
// Since we know we are starting inside of the block we split downwards.
FunctionBlock* new_block = new FunctionBlock();
new_block->start_address = address;
new_block->end_address = block->end_address;
new_block->outgoing_type = block->outgoing_type;
new_block->outgoing_address = block->outgoing_address;
new_block->outgoing_block = block->outgoing_block;
blocks.insert(std::pair<uint32_t, FunctionBlock*>(address, new_block));
// Patch up old block.
block->end_address = address - 4;
block->outgoing_type = FunctionBlock::kTargetNone;
block->outgoing_address = 0;
block->outgoing_block = NULL;
return new_block;
}
}
return NULL;
}
VariableSymbol::VariableSymbol() :
Symbol(Variable),
address(0), name(0),
kernel_export(0) {
}
VariableSymbol::~VariableSymbol() {
delete name;
}
ExceptionEntrySymbol::ExceptionEntrySymbol() :
Symbol(ExceptionEntry),
address(0), function(0) {
}

384
src/cpu/sdb.cc → src/cpu/sdb/symbol_database.cc
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@ -7,10 +7,7 @@
******************************************************************************
*/
#include <xenia/cpu/sdb.h>
#include <list>
#include <map>
#include <xenia/cpu/sdb/symbol_database.h>
#include <xenia/cpu/ppc/instr.h>
@ -23,110 +20,6 @@ using namespace xe::cpu::sdb;
using namespace xe::kernel;
namespace {
// IMAGE_CE_RUNTIME_FUNCTION_ENTRY
// http://msdn.microsoft.com/en-us/library/ms879748.aspx
typedef struct IMAGE_XBOX_RUNTIME_FUNCTION_ENTRY_t {
uint32_t FuncStart; // Virtual address
union {
struct {
uint32_t PrologLen : 8; // # of prolog instructions (size = x4)
uint32_t FuncLen : 22; // # of instructions total (size = x4)
uint32_t ThirtyTwoBit : 1; // Always 1
uint32_t ExceptionFlag : 1; // 1 if PDATA_EH in .text -- unknown if used
} Flags;
uint32_t FlagsValue; // To make byte swapping easier
};
} IMAGE_XBOX_RUNTIME_FUNCTION_ENTRY;
class PEMethodInfo {
public:
uint32_t address;
size_t total_length; // in bytes
size_t prolog_length; // in bytes
};
}
FunctionBlock::FunctionBlock() :
start_address(0), end_address(0),
outgoing_type(kTargetUnknown), outgoing_address(0),
outgoing_function(0) {
}
FunctionSymbol::FunctionSymbol() :
Symbol(Function),
start_address(0), end_address(0), name(0),
type(Unknown), flags(0),
kernel_export(0), ee(0) {
}
FunctionSymbol::~FunctionSymbol() {
delete name;
for (std::map<uint32_t, FunctionBlock*>::iterator it = blocks.begin();
it != blocks.end(); ++it) {
delete it->second;
}
}
FunctionBlock* FunctionSymbol::GetBlock(uint32_t address) {
std::map<uint32_t, FunctionBlock*>::iterator it = blocks.find(address);
if (it != blocks.end()) {
return it->second;
}
return NULL;
}
FunctionBlock* FunctionSymbol::SplitBlock(uint32_t address) {
// Scan to find the block that contains the address.
for (std::map<uint32_t, FunctionBlock*>::iterator it = blocks.begin();
it != blocks.end(); ++it) {
FunctionBlock* block = it->second;
if (address == block->start_address) {
// No need for a split.
return block;
} else if (address >= block->start_address &&
address <= block->end_address + 4) {
// Inside this block.
// Since we know we are starting inside of the block we split downwards.
FunctionBlock* new_block = new FunctionBlock();
new_block->start_address = address;
new_block->end_address = block->end_address;
new_block->outgoing_type = block->outgoing_type;
new_block->outgoing_address = block->outgoing_address;
new_block->outgoing_block = block->outgoing_block;
blocks.insert(std::pair<uint32_t, FunctionBlock*>(address, new_block));
// Patch up old block.
block->end_address = address - 4;
block->outgoing_type = FunctionBlock::kTargetNone;
block->outgoing_address = 0;
block->outgoing_block = NULL;
return new_block;
}
}
return NULL;
}
VariableSymbol::VariableSymbol() :
Symbol(Variable),
address(0), name(0),
kernel_export(0) {
}
VariableSymbol::~VariableSymbol() {
delete name;
}
ExceptionEntrySymbol::ExceptionEntrySymbol() :
Symbol(ExceptionEntry),
address(0), function(0) {
}
SymbolDatabase::SymbolDatabase(xe_memory_ref memory,
ExportResolver* export_resolver) {
memory_ = xe_memory_retain(memory);
@ -766,278 +659,3 @@ bool SymbolDatabase::IsRestGprLr(uint32_t addr) {
FunctionSymbol* fn = GetFunction(addr);
return fn && (fn->flags & FunctionSymbol::kFlagRestGprLr);
}
RawSymbolDatabase::RawSymbolDatabase(
xe_memory_ref memory, ExportResolver* export_resolver,
uint32_t start_address, uint32_t end_address) :
SymbolDatabase(memory, export_resolver) {
start_address_ = start_address;
end_address_ = end_address;
}
RawSymbolDatabase::~RawSymbolDatabase() {
}
uint32_t RawSymbolDatabase::GetEntryPoint() {
return start_address_;
}
bool RawSymbolDatabase::IsValueInTextRange(uint32_t value) {
return value >= start_address_ && value < end_address_;
}
XexSymbolDatabase::XexSymbolDatabase(
xe_memory_ref memory, ExportResolver* export_resolver, xe_xex2_ref xex) :
SymbolDatabase(memory, export_resolver) {
xex_ = xe_xex2_retain(xex);
}
XexSymbolDatabase::~XexSymbolDatabase() {
xe_xex2_release(xex_);
}
int XexSymbolDatabase::Analyze() {
const xe_xex2_header_t* header = xe_xex2_get_header(xex_);
// Find __savegprlr_* and __restgprlr_*.
FindGplr();
// Add each import thunk.
for (size_t n = 0; n < header->import_library_count; n++) {
AddImports(&header->import_libraries[n]);
}
// Add each export root.
// TODO(benvanik): exports.
// - insert fn or variable
// - queue fn
// Add method hints, if available.
// Not all XEXs have these.
AddMethodHints();
return SymbolDatabase::Analyze();
}
int XexSymbolDatabase::FindGplr() {
// Special stack save/restore functions.
// __savegprlr_14 to __savegprlr_31
// __restgprlr_14 to __restgprlr_31
// http://research.microsoft.com/en-us/um/redmond/projects/invisible/src/crt/md/ppc/xxx.s.htm
// It'd be nice to stash these away and mark them as such to allow for
// special codegen.
static const uint32_t code_values[] = {
0x68FFC1F9, // __savegprlr_14
0x70FFE1F9, // __savegprlr_15
0x78FF01FA, // __savegprlr_16
0x80FF21FA, // __savegprlr_17
0x88FF41FA, // __savegprlr_18
0x90FF61FA, // __savegprlr_19
0x98FF81FA, // __savegprlr_20
0xA0FFA1FA, // __savegprlr_21
0xA8FFC1FA, // __savegprlr_22
0xB0FFE1FA, // __savegprlr_23
0xB8FF01FB, // __savegprlr_24
0xC0FF21FB, // __savegprlr_25
0xC8FF41FB, // __savegprlr_26
0xD0FF61FB, // __savegprlr_27
0xD8FF81FB, // __savegprlr_28
0xE0FFA1FB, // __savegprlr_29
0xE8FFC1FB, // __savegprlr_30
0xF0FFE1FB, // __savegprlr_31
0xF8FF8191,
0x2000804E,
0x68FFC1E9, // __restgprlr_14
0x70FFE1E9, // __restgprlr_15
0x78FF01EA, // __restgprlr_16
0x80FF21EA, // __restgprlr_17
0x88FF41EA, // __restgprlr_18
0x90FF61EA, // __restgprlr_19
0x98FF81EA, // __restgprlr_20
0xA0FFA1EA, // __restgprlr_21
0xA8FFC1EA, // __restgprlr_22
0xB0FFE1EA, // __restgprlr_23
0xB8FF01EB, // __restgprlr_24
0xC0FF21EB, // __restgprlr_25
0xC8FF41EB, // __restgprlr_26
0xD0FF61EB, // __restgprlr_27
0xD8FF81EB, // __restgprlr_28
0xE0FFA1EB, // __restgprlr_29
0xE8FFC1EB, // __restgprlr_30
0xF0FFE1EB, // __restgprlr_31
0xF8FF8181,
0xA603887D,
0x2000804E,
};
uint32_t gplr_start = 0;
const xe_xex2_header_t* header = xe_xex2_get_header(xex_);
for (size_t n = 0, i = 0; n < header->section_count; n++) {
const xe_xex2_section_t* section = &header->sections[n];
const size_t start_address =
header->exe_address + (i * xe_xex2_section_length);
const size_t end_address =
start_address + (section->info.page_count * xe_xex2_section_length);
if (section->info.type == XEX_SECTION_CODE) {
gplr_start = xe_memory_search_aligned(
memory_, start_address, end_address,
code_values, XECOUNT(code_values));
if (gplr_start) {
break;
}
}
i += section->info.page_count;
}
if (!gplr_start) {
return 0;
}
// Add function stubs.
char name[32];
uint32_t address = gplr_start;
for (int n = 14; n <= 31; n++) {
xesnprintfa(name, XECOUNT(name), "__savegprlr_%d", n);
FunctionSymbol* fn = GetOrInsertFunction(address);
fn->end_address = fn->start_address + (31 - n) * 4 + 2 * 4;
fn->name = xestrdupa(name);
fn->type = FunctionSymbol::User;
fn->flags |= FunctionSymbol::kFlagSaveGprLr;
address += 4;
}
address = gplr_start + 20 * 4;
for (int n = 14; n <= 31; n++) {
xesnprintfa(name, XECOUNT(name), "__restgprlr_%d", n);
FunctionSymbol* fn = GetOrInsertFunction(address);
fn->end_address = fn->start_address + (31 - n) * 4 + 3 * 4;
fn->name = xestrdupa(name);
fn->type = FunctionSymbol::User;
fn->flags |= FunctionSymbol::kFlagRestGprLr;
address += 4;
}
return 0;
}
int XexSymbolDatabase::AddImports(const xe_xex2_import_library_t* library) {
xe_xex2_import_info_t* import_infos;
size_t import_info_count;
if (xe_xex2_get_import_infos(xex_, library, &import_infos,
&import_info_count)) {
return 1;
}
char name[128];
for (size_t n = 0; n < import_info_count; n++) {
const xe_xex2_import_info_t* info = &import_infos[n];
KernelExport* kernel_export = export_resolver_->GetExportByOrdinal(
library->name, info->ordinal);
VariableSymbol* var = GetOrInsertVariable(info->value_address);
if (kernel_export) {
if (info->thunk_address) {
xesnprintfa(name, XECOUNT(name), "__imp__%s", kernel_export->name);
} else {
xesnprintfa(name, XECOUNT(name), "%s", kernel_export->name);
}
} else {
xesnprintfa(name, XECOUNT(name), "__imp__%s_%.3X", library->name,
info->ordinal);
}
var->name = xestrdupa(name);
var->kernel_export = kernel_export;
if (info->thunk_address) {
FunctionSymbol* fn = GetOrInsertFunction(info->thunk_address);
fn->end_address = fn->start_address + 16 - 4;
fn->type = FunctionSymbol::Kernel;
fn->kernel_export = kernel_export;
if (kernel_export) {
xesnprintfa(name, XECOUNT(name), "%s", kernel_export->name);
} else {
xesnprintfa(name, XECOUNT(name), "__kernel_%s_%.3X", library->name,
info->ordinal);
}
fn->name = xestrdupa(name);
}
}
xe_free(import_infos);
return 0;
}
int XexSymbolDatabase::AddMethodHints() {
uint8_t* mem = xe_memory_addr(memory_, 0);
const IMAGE_XBOX_RUNTIME_FUNCTION_ENTRY* entry = NULL;
// Find pdata, which contains the exception handling entries.
const PESection* pdata = xe_xex2_get_pe_section(xex_, ".pdata");
if (!pdata) {
// No exception data to go on.
return 0;
}
// Resolve.
const uint8_t* p = mem + pdata->address;
// Entry count = pdata size / sizeof(entry).
size_t entry_count = pdata->size / sizeof(IMAGE_XBOX_RUNTIME_FUNCTION_ENTRY);
if (!entry_count) {
// Empty?
return 0;
}
// Allocate output.
PEMethodInfo* method_infos = (PEMethodInfo*)xe_calloc(
entry_count * sizeof(PEMethodInfo));
if (!method_infos) {
return 0;
}
// Parse entries.
// NOTE: entries are in memory as big endian, so pull them out and swap the
// values before using them.
entry = (const IMAGE_XBOX_RUNTIME_FUNCTION_ENTRY*)p;
IMAGE_XBOX_RUNTIME_FUNCTION_ENTRY temp_entry;
for (size_t n = 0; n < entry_count; n++, entry++) {
PEMethodInfo* method_info = &method_infos[n];
method_info->address = XESWAP32BE(entry->FuncStart);
// The bitfield needs to be swapped by hand.
temp_entry.FlagsValue = XESWAP32BE(entry->FlagsValue);
method_info->total_length = temp_entry.Flags.FuncLen * 4;
method_info->prolog_length = temp_entry.Flags.PrologLen * 4;
}
for (size_t n = 0; n < entry_count; n++) {
PEMethodInfo* method_info = &method_infos[n];
FunctionSymbol* fn = GetOrInsertFunction(method_info->address);
fn->end_address = method_info->address + method_info->total_length - 4;
fn->type = FunctionSymbol::User;
// TODO(benvanik): something with prolog_length?
}
xe_free(method_infos);
return 0;
}
uint32_t XexSymbolDatabase::GetEntryPoint() {
const xe_xex2_header_t* header = xe_xex2_get_header(xex_);
return header->exe_entry_point;
};
bool XexSymbolDatabase::IsValueInTextRange(uint32_t value) {
const xe_xex2_header_t* header = xe_xex2_get_header(xex_);
for (size_t n = 0, i = 0; n < header->section_count; n++) {
const xe_xex2_section_t* section = &header->sections[n];
const size_t start_address =
header->exe_address + (i * xe_xex2_section_length);
const size_t end_address =
start_address + (section->info.page_count * xe_xex2_section_length);
if (value >= start_address && value < end_address) {
return section->info.type == XEX_SECTION_CODE;
}
i += section->info.page_count;
}
return false;
}

307
src/cpu/sdb/xex_symbol_database.cc Normal file
View File

@ -0,0 +1,307 @@
/**
******************************************************************************
* Xenia : Xbox 360 Emulator Research Project *
******************************************************************************
* Copyright 2013 Ben Vanik. All rights reserved. *
* Released under the BSD license - see LICENSE in the root for more details. *
******************************************************************************
*/
#include <xenia/cpu/sdb/xex_symbol_database.h>
#include <xenia/cpu/ppc/instr.h>
using namespace std;
using namespace xe;
using namespace xe::cpu;
using namespace xe::cpu::ppc;
using namespace xe::cpu::sdb;
using namespace xe::kernel;
namespace {
// IMAGE_CE_RUNTIME_FUNCTION_ENTRY
// http://msdn.microsoft.com/en-us/library/ms879748.aspx
typedef struct IMAGE_XBOX_RUNTIME_FUNCTION_ENTRY_t {
uint32_t FuncStart; // Virtual address
union {
struct {
uint32_t PrologLen : 8; // # of prolog instructions (size = x4)
uint32_t FuncLen : 22; // # of instructions total (size = x4)
uint32_t ThirtyTwoBit : 1; // Always 1
uint32_t ExceptionFlag : 1; // 1 if PDATA_EH in .text -- unknown if used
} Flags;
uint32_t FlagsValue; // To make byte swapping easier
};
} IMAGE_XBOX_RUNTIME_FUNCTION_ENTRY;
class PEMethodInfo {
public:
uint32_t address;
size_t total_length; // in bytes
size_t prolog_length; // in bytes
};
}
XexSymbolDatabase::XexSymbolDatabase(
xe_memory_ref memory, ExportResolver* export_resolver, xe_xex2_ref xex) :
SymbolDatabase(memory, export_resolver) {
xex_ = xe_xex2_retain(xex);
}
XexSymbolDatabase::~XexSymbolDatabase() {
xe_xex2_release(xex_);
}
int XexSymbolDatabase::Analyze() {
const xe_xex2_header_t* header = xe_xex2_get_header(xex_);
// Find __savegprlr_* and __restgprlr_*.
FindGplr();
// Add each import thunk.
for (size_t n = 0; n < header->import_library_count; n++) {
AddImports(&header->import_libraries[n]);
}
// Add each export root.
// TODO(benvanik): exports.
// - insert fn or variable
// - queue fn
// Add method hints, if available.
// Not all XEXs have these.
AddMethodHints();
return SymbolDatabase::Analyze();
}
int XexSymbolDatabase::FindGplr() {
// Special stack save/restore functions.
// __savegprlr_14 to __savegprlr_31
// __restgprlr_14 to __restgprlr_31
// http://research.microsoft.com/en-us/um/redmond/projects/invisible/src/crt/md/ppc/xxx.s.htm
// It'd be nice to stash these away and mark them as such to allow for
// special codegen.
static const uint32_t code_values[] = {
0x68FFC1F9, // __savegprlr_14
0x70FFE1F9, // __savegprlr_15
0x78FF01FA, // __savegprlr_16
0x80FF21FA, // __savegprlr_17
0x88FF41FA, // __savegprlr_18
0x90FF61FA, // __savegprlr_19
0x98FF81FA, // __savegprlr_20
0xA0FFA1FA, // __savegprlr_21
0xA8FFC1FA, // __savegprlr_22
0xB0FFE1FA, // __savegprlr_23
0xB8FF01FB, // __savegprlr_24
0xC0FF21FB, // __savegprlr_25
0xC8FF41FB, // __savegprlr_26
0xD0FF61FB, // __savegprlr_27
0xD8FF81FB, // __savegprlr_28
0xE0FFA1FB, // __savegprlr_29
0xE8FFC1FB, // __savegprlr_30
0xF0FFE1FB, // __savegprlr_31
0xF8FF8191,
0x2000804E,
0x68FFC1E9, // __restgprlr_14
0x70FFE1E9, // __restgprlr_15
0x78FF01EA, // __restgprlr_16
0x80FF21EA, // __restgprlr_17
0x88FF41EA, // __restgprlr_18
0x90FF61EA, // __restgprlr_19
0x98FF81EA, // __restgprlr_20
0xA0FFA1EA, // __restgprlr_21
0xA8FFC1EA, // __restgprlr_22
0xB0FFE1EA, // __restgprlr_23
0xB8FF01EB, // __restgprlr_24
0xC0FF21EB, // __restgprlr_25
0xC8FF41EB, // __restgprlr_26
0xD0FF61EB, // __restgprlr_27
0xD8FF81EB, // __restgprlr_28
0xE0FFA1EB, // __restgprlr_29
0xE8FFC1EB, // __restgprlr_30
0xF0FFE1EB, // __restgprlr_31
0xF8FF8181,
0xA603887D,
0x2000804E,
};
uint32_t gplr_start = 0;
const xe_xex2_header_t* header = xe_xex2_get_header(xex_);
for (size_t n = 0, i = 0; n < header->section_count; n++) {
const xe_xex2_section_t* section = &header->sections[n];
const size_t start_address =
header->exe_address + (i * xe_xex2_section_length);
const size_t end_address =
start_address + (section->info.page_count * xe_xex2_section_length);
if (section->info.type == XEX_SECTION_CODE) {
gplr_start = xe_memory_search_aligned(
memory_, start_address, end_address,
code_values, XECOUNT(code_values));
if (gplr_start) {
break;
}
}
i += section->info.page_count;
}
if (!gplr_start) {
return 0;
}
// Add function stubs.
char name[32];
uint32_t address = gplr_start;
for (int n = 14; n <= 31; n++) {
xesnprintfa(name, XECOUNT(name), "__savegprlr_%d", n);
FunctionSymbol* fn = GetOrInsertFunction(address);
fn->end_address = fn->start_address + (31 - n) * 4 + 2 * 4;
fn->name = xestrdupa(name);
fn->type = FunctionSymbol::User;
fn->flags |= FunctionSymbol::kFlagSaveGprLr;
address += 4;
}
address = gplr_start + 20 * 4;
for (int n = 14; n <= 31; n++) {
xesnprintfa(name, XECOUNT(name), "__restgprlr_%d", n);
FunctionSymbol* fn = GetOrInsertFunction(address);
fn->end_address = fn->start_address + (31 - n) * 4 + 3 * 4;
fn->name = xestrdupa(name);
fn->type = FunctionSymbol::User;
fn->flags |= FunctionSymbol::kFlagRestGprLr;
address += 4;
}
return 0;
}
int XexSymbolDatabase::AddImports(const xe_xex2_import_library_t* library) {
xe_xex2_import_info_t* import_infos;
size_t import_info_count;
if (xe_xex2_get_import_infos(xex_, library, &import_infos,
&import_info_count)) {
return 1;
}
char name[128];
for (size_t n = 0; n < import_info_count; n++) {
const xe_xex2_import_info_t* info = &import_infos[n];
KernelExport* kernel_export = export_resolver_->GetExportByOrdinal(
library->name, info->ordinal);
VariableSymbol* var = GetOrInsertVariable(info->value_address);
if (kernel_export) {
if (info->thunk_address) {
xesnprintfa(name, XECOUNT(name), "__imp__%s", kernel_export->name);
} else {
xesnprintfa(name, XECOUNT(name), "%s", kernel_export->name);
}
} else {
xesnprintfa(name, XECOUNT(name), "__imp__%s_%.3X", library->name,
info->ordinal);
}
var->name = xestrdupa(name);
var->kernel_export = kernel_export;
if (info->thunk_address) {
FunctionSymbol* fn = GetOrInsertFunction(info->thunk_address);
fn->end_address = fn->start_address + 16 - 4;
fn->type = FunctionSymbol::Kernel;
fn->kernel_export = kernel_export;
if (kernel_export) {
xesnprintfa(name, XECOUNT(name), "%s", kernel_export->name);
} else {
xesnprintfa(name, XECOUNT(name), "__kernel_%s_%.3X", library->name,
info->ordinal);
}
fn->name = xestrdupa(name);
}
}
xe_free(import_infos);
return 0;
}
int XexSymbolDatabase::AddMethodHints() {
uint8_t* mem = xe_memory_addr(memory_, 0);
const IMAGE_XBOX_RUNTIME_FUNCTION_ENTRY* entry = NULL;
// Find pdata, which contains the exception handling entries.
const PESection* pdata = xe_xex2_get_pe_section(xex_, ".pdata");
if (!pdata) {
// No exception data to go on.
return 0;
}
// Resolve.
const uint8_t* p = mem + pdata->address;
// Entry count = pdata size / sizeof(entry).
size_t entry_count = pdata->size / sizeof(IMAGE_XBOX_RUNTIME_FUNCTION_ENTRY);
if (!entry_count) {
// Empty?
return 0;
}
// Allocate output.
PEMethodInfo* method_infos = (PEMethodInfo*)xe_calloc(
entry_count * sizeof(PEMethodInfo));
if (!method_infos) {
return 0;
}
// Parse entries.
// NOTE: entries are in memory as big endian, so pull them out and swap the
// values before using them.
entry = (const IMAGE_XBOX_RUNTIME_FUNCTION_ENTRY*)p;
IMAGE_XBOX_RUNTIME_FUNCTION_ENTRY temp_entry;
for (size_t n = 0; n < entry_count; n++, entry++) {
PEMethodInfo* method_info = &method_infos[n];
method_info->address = XESWAP32BE(entry->FuncStart);
// The bitfield needs to be swapped by hand.
temp_entry.FlagsValue = XESWAP32BE(entry->FlagsValue);
method_info->total_length = temp_entry.Flags.FuncLen * 4;
method_info->prolog_length = temp_entry.Flags.PrologLen * 4;
}
for (size_t n = 0; n < entry_count; n++) {
PEMethodInfo* method_info = &method_infos[n];
FunctionSymbol* fn = GetOrInsertFunction(method_info->address);
fn->end_address = method_info->address + method_info->total_length - 4;
fn->type = FunctionSymbol::User;
// TODO(benvanik): something with prolog_length?
}
xe_free(method_infos);
return 0;
}
uint32_t XexSymbolDatabase::GetEntryPoint() {
const xe_xex2_header_t* header = xe_xex2_get_header(xex_);
return header->exe_entry_point;
};
bool XexSymbolDatabase::IsValueInTextRange(uint32_t value) {
const xe_xex2_header_t* header = xe_xex2_get_header(xex_);
for (size_t n = 0, i = 0; n < header->section_count; n++) {
const xe_xex2_section_t* section = &header->sections[n];
const size_t start_address =
header->exe_address + (i * xe_xex2_section_length);
const size_t end_address =
start_address + (section->info.page_count * xe_xex2_section_length);
if (value >= start_address && value < end_address) {
return section->info.type == XEX_SECTION_CODE;
}
i += section->info.page_count;
}
return false;
}

2
src/cpu/sources.gypi
View File

@ -5,12 +5,12 @@
'exec_module.cc',
'llvm_exports.cc',
'processor.cc',
'sdb.cc',
'thread_state.cc',
],
'includes': [
'codegen/sources.gypi',
'ppc/sources.gypi',
'sdb/sources.gypi',
],
}