mirror of https://github.com/PCSX2/pcsx2.git
372 lines
10 KiB
C++
372 lines
10 KiB
C++
/* PCSX2 - PS2 Emulator for PCs
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* Copyright (C) 2002-2010 PCSX2 Dev Team
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*
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* PCSX2 is free software: you can redistribute it and/or modify it under the terms
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* of the GNU Lesser General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with PCSX2.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "PrecompiledHeader.h"
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#include "Common.h"
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#include "GS.h" // for sending game crc to mtgs
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#include "Elfheader.h"
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#include "DebugTools/SymbolMap.h"
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u32 ElfCRC;
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u32 ElfEntry;
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std::pair<u32,u32> ElfTextRange;
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wxString LastELF;
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// All of ElfObjects functions.
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ElfObject::ElfObject(const wxString& srcfile, IsoFile& isofile)
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: data( wxULongLong(isofile.getLength()).GetLo(), L"ELF headers" )
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, proghead( NULL )
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, secthead( NULL )
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, filename( srcfile )
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, header( *(ELF_HEADER*)data.GetPtr() )
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{
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isCdvd = true;
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checkElfSize(data.GetSizeInBytes());
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readIso(isofile);
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initElfHeaders();
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}
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ElfObject::ElfObject( const wxString& srcfile, uint hdrsize )
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: data( wxULongLong(hdrsize).GetLo(), L"ELF headers" )
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, proghead( NULL )
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, secthead( NULL )
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, filename( srcfile )
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, header( *(ELF_HEADER*)data.GetPtr() )
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{
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isCdvd = false;
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checkElfSize(data.GetSizeInBytes());
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readFile();
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initElfHeaders();
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}
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void ElfObject::initElfHeaders()
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{
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DevCon.WriteLn( L"Initializing Elf: %d bytes", data.GetSizeInBytes());
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if ( header.e_phnum > 0 )
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proghead = (ELF_PHR*)&data[header.e_phoff];
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if ( header.e_shnum > 0 )
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secthead = (ELF_SHR*)&data[header.e_shoff];
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if ( ( header.e_shnum > 0 ) && ( header.e_shentsize != sizeof(ELF_SHR) ) )
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Console.Error( "(ELF) Size of section headers is not standard" );
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if ( ( header.e_phnum > 0 ) && ( header.e_phentsize != sizeof(ELF_PHR) ) )
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Console.Error( "(ELF) Size of program headers is not standard" );
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//getCRC();
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const char* elftype = NULL;
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switch( header.e_type )
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{
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default:
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ELF_LOG( "type: unknown = %x", header.e_type );
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break;
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case 0x0: elftype = "no file type"; break;
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case 0x1: elftype = "relocatable"; break;
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case 0x2: elftype = "executable"; break;
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}
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if (elftype != NULL) ELF_LOG( "type: %s", elftype );
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const char* machine = NULL;
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switch(header.e_machine)
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{
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case 1: machine = "AT&T WE 32100"; break;
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case 2: machine = "SPARC"; break;
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case 3: machine = "Intel 80386"; break;
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case 4: machine = "Motorola 68000"; break;
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case 5: machine = "Motorola 88000"; break;
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case 7: machine = "Intel 80860"; break;
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case 8: machine = "mips_rs3000"; break;
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default:
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ELF_LOG( "machine: unknown = %x", header.e_machine );
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break;
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}
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if (machine != NULL) ELF_LOG( "machine: %s", machine );
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ELF_LOG("version: %d",header.e_version);
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ELF_LOG("entry: %08x",header.e_entry);
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ELF_LOG("flags: %08x",header.e_flags);
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ELF_LOG("eh size: %08x",header.e_ehsize);
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ELF_LOG("ph off: %08x",header.e_phoff);
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ELF_LOG("ph entsiz: %08x",header.e_phentsize);
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ELF_LOG("ph num: %08x",header.e_phnum);
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ELF_LOG("sh off: %08x",header.e_shoff);
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ELF_LOG("sh entsiz: %08x",header.e_shentsize);
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ELF_LOG("sh num: %08x",header.e_shnum);
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ELF_LOG("sh strndx: %08x",header.e_shstrndx);
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ELF_LOG("\n");
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//applyPatches();
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}
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bool ElfObject::hasProgramHeaders() { return (proghead != NULL); }
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bool ElfObject::hasSectionHeaders() { return (secthead != NULL); }
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bool ElfObject::hasHeaders() { return (hasProgramHeaders() && hasSectionHeaders()); }
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std::pair<u32,u32> ElfObject::getTextRange()
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{
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for (int i = 0; i < header.e_phnum; i++)
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{
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u32 start = proghead[i].p_vaddr;
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u32 size = proghead[i].p_memsz;
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if (start <= header.e_entry && (start+size) > header.e_entry)
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return std::make_pair(start,size);
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}
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return std::make_pair(0,0);
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}
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void ElfObject::readIso(IsoFile& file)
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{
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int rsize = file.read(data.GetPtr(), data.GetSizeInBytes());
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if (rsize < data.GetSizeInBytes()) throw Exception::EndOfStream(filename);
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}
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void ElfObject::readFile()
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{
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int rsize = 0;
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FILE *f = wxFopen( filename, "rb" );
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if (f == NULL) throw Exception::FileNotFound( filename );
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fseek(f, 0, SEEK_SET);
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rsize = fread(data.GetPtr(), 1, data.GetSizeInBytes(), f);
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fclose( f );
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if (rsize < data.GetSizeInBytes()) throw Exception::EndOfStream(filename);
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}
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static wxString GetMsg_InvalidELF()
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{
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return
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_("Cannot load ELF binary image. The file may be corrupt or incomplete.") +
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wxString(L"\n\n") +
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_("If loading from an ISO image, this error may be caused by an unsupported ISO image type or a bug in PCSX2 ISO image support.");
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}
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void ElfObject::checkElfSize(s64 elfsize)
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{
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const wxChar* diagMsg = NULL;
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if (elfsize > 0xfffffff) diagMsg = L"Illegal ELF file size over 2GB!";
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else if (elfsize == -1) diagMsg = L"ELF file does not exist!";
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else if (elfsize == 0) diagMsg = L"Unexpected end of ELF file.";
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if (diagMsg)
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throw Exception::BadStream(filename)
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.SetDiagMsg(diagMsg)
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.SetUserMsg(GetMsg_InvalidELF());
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}
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u32 ElfObject::getCRC()
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{
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u32 CRC = 0;
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const u32* srcdata = (u32*)data.GetPtr();
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for(u32 i=data.GetSizeInBytes()/4; i; --i, ++srcdata)
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CRC ^= *srcdata;
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return CRC;
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}
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void ElfObject::loadProgramHeaders()
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{
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if (proghead == NULL) return;
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for( int i = 0 ; i < header.e_phnum ; i++ )
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{
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ELF_LOG( "Elf32 Program Header" );
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ELF_LOG( "type: " );
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switch(proghead[ i ].p_type)
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{
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default:
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ELF_LOG( "unknown %x", (int)proghead[ i ].p_type );
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break;
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case 0x1:
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{
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ELF_LOG("load");
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}
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break;
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}
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ELF_LOG("\n");
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ELF_LOG("offset: %08x",proghead[i].p_offset);
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ELF_LOG("vaddr: %08x",proghead[i].p_vaddr);
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ELF_LOG("paddr: %08x",proghead[i].p_paddr);
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ELF_LOG("file size: %08x",proghead[i].p_filesz);
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ELF_LOG("mem size: %08x",proghead[i].p_memsz);
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ELF_LOG("flags: %08x",proghead[i].p_flags);
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ELF_LOG("palign: %08x",proghead[i].p_align);
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ELF_LOG("\n");
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}
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}
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void ElfObject::loadSectionHeaders()
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{
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if (secthead == NULL || header.e_shoff > (u32)data.GetLength()) return;
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const u8* sections_names = data.GetPtr( secthead[ (header.e_shstrndx == 0xffff ? 0 : header.e_shstrndx) ].sh_offset );
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int i_st = -1, i_dt = -1;
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for( int i = 0 ; i < header.e_shnum ; i++ )
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{
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ELF_LOG( "ELF32 Section Header [%x] %s", i, §ions_names[ secthead[ i ].sh_name ] );
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// used by parseCommandLine
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//if ( secthead[i].sh_flags & 0x2 )
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// args_ptr = std::min( args_ptr, secthead[ i ].sh_addr & 0x1ffffff );
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ELF_LOG("\n");
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const char* sectype = NULL;
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switch(secthead[ i ].sh_type)
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{
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case 0x0: sectype = "null"; break;
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case 0x1: sectype = "progbits"; break;
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case 0x2: sectype = "symtab"; break;
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case 0x3: sectype = "strtab"; break;
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case 0x4: sectype = "rela"; break;
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case 0x8: sectype = "no bits"; break;
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case 0x9: sectype = "rel"; break;
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default:
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ELF_LOG("type: unknown %08x",secthead[i].sh_type);
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break;
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}
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ELF_LOG("type: %s", sectype);
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ELF_LOG("flags: %08x", secthead[i].sh_flags);
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ELF_LOG("addr: %08x", secthead[i].sh_addr);
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ELF_LOG("offset: %08x", secthead[i].sh_offset);
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ELF_LOG("size: %08x", secthead[i].sh_size);
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ELF_LOG("link: %08x", secthead[i].sh_link);
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ELF_LOG("info: %08x", secthead[i].sh_info);
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ELF_LOG("addralign: %08x", secthead[i].sh_addralign);
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ELF_LOG("entsize: %08x", secthead[i].sh_entsize);
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// dump symbol table
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if (secthead[ i ].sh_type == 0x02)
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{
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i_st = i;
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i_dt = secthead[i].sh_link;
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}
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}
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if ((i_st >= 0) && (i_dt >= 0))
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{
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const char * SymNames;
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Elf32_Sym * eS;
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SymNames = (char*)data.GetPtr(secthead[i_dt].sh_offset);
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eS = (Elf32_Sym*)data.GetPtr(secthead[i_st].sh_offset);
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Console.WriteLn("found %d symbols", secthead[i_st].sh_size / sizeof(Elf32_Sym));
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for(uint i = 1; i < (secthead[i_st].sh_size / sizeof(Elf32_Sym)); i++) {
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if ((eS[i].st_value != 0) && (ELF32_ST_TYPE(eS[i].st_info) == 2))
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{
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symbolMap.AddLabel(&SymNames[eS[i].st_name],eS[i].st_value);
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}
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}
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}
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}
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void ElfObject::loadHeaders()
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{
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loadProgramHeaders();
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loadSectionHeaders();
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}
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// return value:
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// 0 - Invalid or unknown disc.
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// 1 - PS1 CD
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// 2 - PS2 CD
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int GetPS2ElfName( wxString& name )
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{
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int retype = 0;
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try {
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IsoFSCDVD isofs;
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IsoFile file( isofs, L"SYSTEM.CNF;1");
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int size = file.getLength();
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if( size == 0 ) return 0;
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while( !file.eof() )
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{
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const wxString original( fromUTF8(file.readLine().c_str()) );
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const ParsedAssignmentString parts( original );
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if( parts.lvalue.IsEmpty() && parts.rvalue.IsEmpty() ) continue;
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if( parts.rvalue.IsEmpty() && file.getLength() != file.getSeekPos() )
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{ // Some games have a character on the last line of the file, don't print the error in those cases.
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Console.Warning( "(SYSTEM.CNF) Unusual or malformed entry in SYSTEM.CNF ignored:" );
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Console.Indent().WriteLn( original );
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continue;
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}
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if( parts.lvalue == L"BOOT2" )
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{
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name = parts.rvalue;
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Console.WriteLn( Color_StrongBlue, L"(SYSTEM.CNF) Detected PS2 Disc = " + name );
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retype = 2;
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}
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else if( parts.lvalue == L"BOOT" )
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{
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name = parts.rvalue;
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Console.WriteLn( Color_StrongBlue, L"(SYSTEM.CNF) Detected PSX/PSone Disc = " + name );
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retype = 1;
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}
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else if( parts.lvalue == L"VMODE" )
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{
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Console.WriteLn( Color_Blue, L"(SYSTEM.CNF) Disc region type = " + parts.rvalue );
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}
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else if( parts.lvalue == L"VER" )
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{
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Console.WriteLn( Color_Blue, L"(SYSTEM.CNF) Software version = " + parts.rvalue );
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}
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}
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if( retype == 0 )
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{
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Console.Error("(GetElfName) Disc image is *not* a Playstation or PS2 game!");
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return 0;
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}
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}
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catch( Exception::FileNotFound& )
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{
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//Console.Warning(ex.FormatDiagnosticMessage());
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return 0; // no SYSTEM.CNF, not a PS1/PS2 disc.
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}
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catch (Exception::BadStream& ex)
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{
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Console.Error(ex.FormatDiagnosticMessage());
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return 0; // ISO error
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}
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return retype;
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}
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