mirror of https://github.com/FWGS/xash3d-fwgs
engine: library: fix saves on 64-bit Windows, compile custom loader only on x86
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21174dc9cf
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a0af256641
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@ -31,7 +31,7 @@ typedef struct dll_user_s
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dword *funcs;
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char *names[MAX_LIBRARY_EXPORTS]; // max 4096 exports supported
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int num_ordinals; // actual exports count
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dword funcBase; // base offset
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uintptr_t funcBase; // base offset
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} dll_user_t;
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dll_user_t *FS_FindLibrary( const char *dllname, qboolean directpath );
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@ -16,7 +16,11 @@ GNU General Public License for more details.
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#if XASH_LIB == LIB_WIN32
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#include "common.h"
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#include "library.h"
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#include <winnt.h>
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#define CALCULATE_ADDRESS( base, offset ) ( ( DWORD )( base ) + ( DWORD )( offset ) )
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#if XASH_X86
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/*
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---------------------------------------------------------------
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@ -25,106 +29,11 @@ GNU General Public License for more details.
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---------------------------------------------------------------
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*/
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#define DOS_SIGNATURE 0x5A4D // MZ
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#define NT_SIGNATURE 0x00004550 // PE00
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#define NUMBER_OF_DIRECTORY_ENTRIES 16
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#ifndef IMAGE_SIZEOF_BASE_RELOCATION
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#define IMAGE_SIZEOF_BASE_RELOCATION ( sizeof( IMAGE_BASE_RELOCATION ))
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#endif
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typedef struct
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{
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// dos .exe header
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word e_magic; // magic number
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word e_cblp; // bytes on last page of file
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word e_cp; // pages in file
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word e_crlc; // relocations
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word e_cparhdr; // size of header in paragraphs
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word e_minalloc; // minimum extra paragraphs needed
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word e_maxalloc; // maximum extra paragraphs needed
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word e_ss; // initial (relative) SS value
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word e_sp; // initial SP value
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word e_csum; // checksum
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word e_ip; // initial IP value
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word e_cs; // initial (relative) CS value
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word e_lfarlc; // file address of relocation table
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word e_ovno; // overlay number
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word e_res[4]; // reserved words
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word e_oemid; // OEM identifier (for e_oeminfo)
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word e_oeminfo; // OEM information; e_oemid specific
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word e_res2[10]; // reserved words
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long e_lfanew; // file address of new exe header
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} DOS_HEADER;
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typedef struct
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{
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// win .exe header
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word Machine;
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word NumberOfSections;
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dword TimeDateStamp;
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dword PointerToSymbolTable;
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dword NumberOfSymbols;
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word SizeOfOptionalHeader;
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word Characteristics;
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} PE_HEADER;
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typedef struct
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{
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dword VirtualAddress;
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dword Size;
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} DATA_DIRECTORY;
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typedef struct
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{
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word Magic;
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byte MajorLinkerVersion;
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byte MinorLinkerVersion;
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dword SizeOfCode;
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dword SizeOfInitializedData;
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dword SizeOfUninitializedData;
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dword AddressOfEntryPoint;
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dword BaseOfCode;
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dword BaseOfData;
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dword ImageBase;
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dword SectionAlignment;
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dword FileAlignment;
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word MajorOperatingSystemVersion;
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word MinorOperatingSystemVersion;
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word MajorImageVersion;
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word MinorImageVersion;
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word MajorSubsystemVersion;
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word MinorSubsystemVersion;
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dword Win32VersionValue;
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dword SizeOfImage;
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dword SizeOfHeaders;
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dword CheckSum;
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word Subsystem;
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word DllCharacteristics;
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dword SizeOfStackReserve;
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dword SizeOfStackCommit;
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dword SizeOfHeapReserve;
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dword SizeOfHeapCommit;
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dword LoaderFlags;
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dword NumberOfRvaAndSizes;
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DATA_DIRECTORY DataDirectory[NUMBER_OF_DIRECTORY_ENTRIES];
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} OPTIONAL_HEADER;
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typedef struct
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{
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dword Characteristics;
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dword TimeDateStamp;
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word MajorVersion;
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word MinorVersion;
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dword Name;
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dword Base;
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dword NumberOfFunctions;
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dword NumberOfNames;
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dword AddressOfFunctions; // RVA from base of image
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dword AddressOfNames; // RVA from base of image
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dword AddressOfNameOrdinals; // RVA from base of image
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} EXPORT_DIRECTORY;
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typedef struct
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{
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PIMAGE_NT_HEADERS headers;
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@ -134,26 +43,6 @@ typedef struct
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int initialized;
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} MEMORYMODULE, *PMEMORYMODULE;
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typedef struct
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{
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byte Name[8]; // dos name length
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union
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{
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dword PhysicalAddress;
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dword VirtualSize;
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} Misc;
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dword VirtualAddress;
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dword SizeOfRawData;
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dword PointerToRawData;
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dword PointerToRelocations;
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dword PointerToLinenumbers;
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word NumberOfRelocations;
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word NumberOfLinenumbers;
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dword Characteristics;
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} SECTION_HEADER;
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// Protection flags for memory pages (Executable, Readable, Writeable)
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static int ProtectionFlags[2][2][2] =
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{
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@ -170,7 +59,6 @@ static int ProtectionFlags[2][2][2] =
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typedef BOOL (WINAPI *DllEntryProc)( HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved );
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#define GET_HEADER_DICTIONARY( module, idx ) &(module)->headers->OptionalHeader.DataDirectory[idx]
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#define CALCULATE_ADDRESS( base, offset ) ((DWORD)(base) + (DWORD)(offset))
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static void CopySections( const byte *data, PIMAGE_NT_HEADERS old_headers, PMEMORYMODULE module )
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{
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@ -598,6 +486,7 @@ library_error:
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return NULL;
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}
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#endif
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static DWORD GetOffsetByRVA( DWORD rva, PIMAGE_NT_HEADERS nt_header )
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{
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@ -653,41 +542,18 @@ static void FreeNameFuncGlobals( dll_user_t *hInst )
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hInst->funcs = NULL;
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}
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char *GetMSVCName( const char *in_name )
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{
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static string out_name;
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char *pos;
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if( in_name[0] == '?' ) // is this a MSVC C++ mangled name?
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{
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if(( pos = Q_strstr( in_name, "@@" )) != NULL )
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{
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int len = pos - in_name;
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// strip off the leading '?'
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Q_strncpy( out_name, in_name + 1, sizeof( out_name ));
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out_name[len-1] = 0; // terminate string at the "@@"
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return out_name;
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}
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}
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Q_strncpy( out_name, in_name, sizeof( out_name ));
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return out_name;
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}
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qboolean LibraryLoadSymbols( dll_user_t *hInst )
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{
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file_t *f;
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string errorstring;
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DOS_HEADER dos_header;
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IMAGE_DOS_HEADER dos_header;
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LONG nt_signature;
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PE_HEADER pe_header;
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SECTION_HEADER section_header;
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IMAGE_FILE_HEADER pe_header;
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IMAGE_SECTION_HEADER section_header;
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qboolean rdata_found;
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OPTIONAL_HEADER optional_header;
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IMAGE_OPTIONAL_HEADER optional_header;
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long rdata_delta = 0;
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EXPORT_DIRECTORY export_directory;
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IMAGE_EXPORT_DIRECTORY export_directory;
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long name_offset;
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long exports_offset;
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long ordinal_offset;
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@ -715,7 +581,7 @@ qboolean LibraryLoadSymbols( dll_user_t *hInst )
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goto table_error;
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}
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if( dos_header.e_magic != DOS_SIGNATURE )
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if( dos_header.e_magic != IMAGE_DOS_SIGNATURE )
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{
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Q_sprintf( errorstring, "%s does not have a valid dll signature", hInst->shortPath );
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goto table_error;
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@ -733,7 +599,7 @@ qboolean LibraryLoadSymbols( dll_user_t *hInst )
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goto table_error;
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}
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if( nt_signature != NT_SIGNATURE )
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if( nt_signature != IMAGE_NT_SIGNATURE )
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{
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Q_sprintf( errorstring, "%s does not have a valid NT signature", hInst->shortPath );
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goto table_error;
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@ -860,7 +726,7 @@ qboolean LibraryLoadSymbols( dll_user_t *hInst )
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if( FS_Seek( f, name_offset, SEEK_SET ) != -1 )
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{
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FsGetString( f, function_name );
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hInst->names[i] = copystring( GetMSVCName( function_name ));
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hInst->names[i] = copystring( COM_GetMSVCName( function_name ));
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}
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else break;
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}
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@ -880,8 +746,8 @@ qboolean LibraryLoadSymbols( dll_user_t *hInst )
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void *fn_offset;
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index = hInst->ordinals[i];
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fn_offset = (void *)COM_GetProcAddress( hInst, "GiveFnptrsToDll" );
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hInst->funcBase = (dword)(fn_offset) - hInst->funcs[index];
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fn_offset = COM_GetProcAddress( hInst, "GiveFnptrsToDll" );
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hInst->funcBase = (uintptr_t)(fn_offset) - hInst->funcs[index];
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break;
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}
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}
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@ -938,7 +804,7 @@ qboolean COM_CheckLibraryDirectDependency( const char *name, const char *depname
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importDir = &peHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT];
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if( importDir->Size <= 0 )
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{
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Q_snprintf( errorstring, sizeof( errorstring ), "%s has no dependencies. Is this library valid?\n", name );
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Con_Printf( S_WARN "%s: %s has no dependencies. Is this library valid?\n", __FUNCTION__, name );
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goto libraryerror;
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}
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@ -956,7 +822,10 @@ qboolean COM_CheckLibraryDirectDependency( const char *name, const char *depname
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}
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libraryerror:
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if( errorstring[0] ) Con_Printf( errorstring );
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if( errorstring[0] )
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{
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Con_Printf( S_ERROR "%s: %s\n", __FUNCTION__, errorstring );
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}
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if( data ) Mem_Free( data ); // release memory
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return false;
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}
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@ -975,17 +844,22 @@ void *COM_LoadLibrary( const char *dllname, int build_ordinals_table, qboolean d
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hInst = FS_FindLibrary( dllname, directpath );
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if( !hInst ) return NULL; // nothing to load
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if( hInst->encrypted )
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{
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Con_Printf( S_ERROR "LoadLibrary: couldn't load encrypted library %s\n", dllname );
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return NULL;
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}
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#if XASH_X86
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if( hInst->custom_loader )
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{
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if( hInst->encrypted )
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{
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Con_Printf( S_ERROR "LoadLibrary: couldn't load encrypted library %s\n", dllname );
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return NULL;
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}
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hInst->hInstance = MemoryLoadLibrary( hInst->fullPath );
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}
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else hInst->hInstance = LoadLibrary( hInst->fullPath );
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else
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#endif
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{
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hInst->hInstance = LoadLibrary( hInst->fullPath );
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}
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if( !hInst->hInstance )
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{
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@ -1017,8 +891,10 @@ void *COM_GetProcAddress( void *hInstance, const char *name )
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if( !hInst || !hInst->hInstance )
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return NULL;
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#if XASH_X86
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if( hInst->custom_loader )
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return (void *)MemoryGetProcAddress( hInst->hInstance, name );
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#endif
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return (void *)GetProcAddress( hInst->hInstance, name );
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}
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@ -1037,9 +913,16 @@ void COM_FreeLibrary( void *hInstance )
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}
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else Con_Reportf( "Sys_FreeLibrary: Unloading %s\n", hInst->dllName );
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#if XASH_X86
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if( hInst->custom_loader )
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{
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MemoryFreeLibrary( hInst->hInstance );
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else FreeLibrary( hInst->hInstance );
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}
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else
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#endif
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{
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FreeLibrary( hInst->hInstance );
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}
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hInst->hInstance = NULL;
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