| #ifndef WINELIB |
| /* |
| * NE modules |
| * |
| * Copyright 1993 Robert J. Amstadt |
| * Copyright 1995 Alexandre Julliard |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <ctype.h> |
| #include <string.h> |
| #include <errno.h> |
| #include "neexe.h" |
| #include "windows.h" |
| #include "arch.h" |
| #include "selectors.h" |
| #include "callback.h" |
| #include "file.h" |
| #include "module.h" |
| #include "stackframe.h" |
| #include "stddebug.h" |
| #include "debug.h" |
| #include "xmalloc.h" |
| |
| |
| /*********************************************************************** |
| * NE_LoadSegment |
| */ |
| BOOL32 NE_LoadSegment( HMODULE16 hModule, WORD segnum ) |
| { |
| NE_MODULE *pModule; |
| SEGTABLEENTRY *pSegTable, *pSeg; |
| WORD *pModuleTable; |
| WORD count, i, offset; |
| HMODULE16 module; |
| FARPROC16 address; |
| int fd; |
| struct relocation_entry_s *rep, *reloc_entries; |
| BYTE *func_name; |
| int size; |
| char* mem; |
| |
| char buffer[100]; |
| int ordinal, additive; |
| unsigned short *sp; |
| |
| if (!(pModule = MODULE_GetPtr( hModule ))) return FALSE; |
| pSegTable = NE_SEG_TABLE( pModule ); |
| pSeg = pSegTable + segnum - 1; |
| pModuleTable = NE_MODULE_TABLE( pModule ); |
| |
| if (!pSeg->filepos) return TRUE; /* No file image, just return */ |
| |
| fd = MODULE_OpenFile( hModule ); |
| dprintf_module( stddeb, "Loading segment %d, selector=%04x\n", |
| segnum, pSeg->selector ); |
| lseek( fd, pSeg->filepos << pModule->alignment, SEEK_SET ); |
| if (pSeg->size) size = pSeg->size; |
| else if (pSeg->minsize) size = pSeg->minsize; |
| else size = 0x10000; |
| mem = GlobalLock16(pSeg->selector); |
| if (pModule->flags & NE_FFLAGS_SELFLOAD && segnum > 1) |
| { |
| /* Implement self loading segments */ |
| SELFLOADHEADER *selfloadheader; |
| STACK16FRAME *stack16Top; |
| WORD oldss, oldsp, oldselector, newselector; |
| HFILE32 hf = FILE_DupUnixHandle( fd ); |
| |
| selfloadheader = (SELFLOADHEADER *) |
| PTR_SEG_OFF_TO_LIN(pSegTable->selector,0); |
| oldss = IF1632_Saved16_ss; |
| oldsp = IF1632_Saved16_sp; |
| oldselector = pSeg->selector; |
| IF1632_Saved16_ss = pModule->self_loading_sel; |
| IF1632_Saved16_sp = 0xFF00 - sizeof(*stack16Top); |
| stack16Top = CURRENT_STACK16; |
| stack16Top->saved_ss = 0; |
| stack16Top->saved_sp = 0; |
| stack16Top->ds = stack16Top->es = pModule->self_loading_sel; |
| stack16Top->entry_point = 0; |
| stack16Top->entry_ip = 0; |
| stack16Top->entry_cs = 0; |
| stack16Top->bp = 0; |
| stack16Top->ip = 0; |
| stack16Top->cs = 0; |
| newselector = CallTo16_word_www( selfloadheader->LoadAppSeg, |
| hModule, hf, segnum ); |
| _lclose32( hf ); |
| if (newselector != oldselector) { |
| /* Self loaders like creating their own selectors; |
| * they love asking for trouble to Wine developers |
| */ |
| if (segnum == pModule->dgroup) { |
| memcpy(PTR_SEG_OFF_TO_LIN(oldselector,0), |
| PTR_SEG_OFF_TO_LIN(newselector,0), |
| pSeg->minsize ? pSeg->minsize : 0x10000); |
| FreeSelector(newselector); |
| pSeg->selector = oldselector; |
| fprintf(stderr, "A new selector was allocated for the dgroup segment\n" |
| "Old selector is %d, new one is %d", oldselector, newselector); |
| } else { |
| FreeSelector(pSeg->selector); |
| pSeg->selector = newselector; |
| } |
| } |
| |
| IF1632_Saved16_ss = oldss; |
| IF1632_Saved16_sp = oldsp; |
| } |
| else if (!(pSeg->flags & NE_SEGFLAGS_ITERATED)) |
| read(fd, mem, size); |
| else { |
| /* |
| The following bit of code for "iterated segments" was written without |
| any documentation on the format of these segments. It seems to work, |
| but may be missing something. If you have any doco please either send |
| it to me or fix the code yourself. gfm@werple.mira.net.au |
| */ |
| char* buff = xmalloc(size); |
| char* curr = buff; |
| read(fd, buff, size); |
| while(curr < buff + size) { |
| unsigned int rept = *((short*) curr)++; |
| unsigned int len = *((short*) curr)++; |
| for(; rept > 0; rept--) { |
| char* bytes = curr; |
| unsigned int byte; |
| for(byte = 0; byte < len; byte++) |
| *mem++ = *bytes++; |
| } |
| curr += len; |
| } |
| free(buff); |
| } |
| |
| pSeg->flags |= NE_SEGFLAGS_LOADED; |
| if (!(pSeg->flags & NE_SEGFLAGS_RELOC_DATA)) |
| return TRUE; /* No relocation data, we are done */ |
| |
| read( fd, &count, sizeof(count) ); |
| if (!count) return TRUE; |
| |
| dprintf_fixup( stddeb, "Fixups for %*.*s, segment %d, selector %04x\n", |
| *((BYTE *)pModule + pModule->name_table), |
| *((BYTE *)pModule + pModule->name_table), |
| (char *)pModule + pModule->name_table + 1, |
| segnum, pSeg->selector ); |
| |
| reloc_entries = (struct relocation_entry_s *)xmalloc(count * sizeof(struct relocation_entry_s)); |
| if (read( fd, reloc_entries, count * sizeof(struct relocation_entry_s)) != |
| count * sizeof(struct relocation_entry_s)) |
| { |
| dprintf_fixup( stddeb, "Unable to read relocation information\n" ); |
| return FALSE; |
| } |
| |
| /* |
| * Go through the relocation table on entry at a time. |
| */ |
| rep = reloc_entries; |
| for (i = 0; i < count; i++, rep++) |
| { |
| /* |
| * Get the target address corresponding to this entry. |
| */ |
| |
| /* If additive, there is no target chain list. Instead, add source |
| and target */ |
| additive = rep->relocation_type & NE_RELFLAG_ADDITIVE; |
| rep->relocation_type &= 0x3; |
| |
| switch (rep->relocation_type) |
| { |
| case NE_RELTYPE_ORDINAL: |
| module = pModuleTable[rep->target1-1]; |
| ordinal = rep->target2; |
| address = MODULE_GetEntryPoint( module, ordinal ); |
| if (!address) |
| { |
| NE_MODULE *pTarget = MODULE_GetPtr( module ); |
| if (!pTarget) |
| fprintf( stderr, "Module not found: %04x, reference %d of module %*.*s\n", |
| module, rep->target1, |
| *((BYTE *)pModule + pModule->name_table), |
| *((BYTE *)pModule + pModule->name_table), |
| (char *)pModule + pModule->name_table + 1 ); |
| else |
| fprintf( stderr, "Warning: no handler for %*.*s.%d, setting to 0:0\n", |
| *((BYTE *)pTarget + pTarget->name_table), |
| *((BYTE *)pTarget + pTarget->name_table), |
| (char *)pTarget + pTarget->name_table + 1, |
| ordinal ); |
| } |
| if (debugging_fixup) |
| { |
| NE_MODULE *pTarget = MODULE_GetPtr( module ); |
| fprintf( stddeb,"%d: %*.*s.%d=%04x:%04x\n", i + 1, |
| *((BYTE *)pTarget + pTarget->name_table), |
| *((BYTE *)pTarget + pTarget->name_table), |
| (char *)pTarget + pTarget->name_table + 1, |
| ordinal, HIWORD(address), LOWORD(address) ); |
| } |
| break; |
| |
| case NE_RELTYPE_NAME: |
| module = pModuleTable[rep->target1-1]; |
| func_name = (char *)pModule + pModule->import_table + rep->target2; |
| memcpy( buffer, func_name+1, *func_name ); |
| buffer[*func_name] = '\0'; |
| func_name = buffer; |
| ordinal = MODULE_GetOrdinal( module, func_name ); |
| |
| address = MODULE_GetEntryPoint( module, ordinal ); |
| |
| if (!address) |
| { |
| NE_MODULE *pTarget = MODULE_GetPtr( module ); |
| fprintf( stderr, "Warning: no handler for %*.*s.%s, setting to 0:0\n", |
| *((BYTE *)pTarget + pTarget->name_table), |
| *((BYTE *)pTarget + pTarget->name_table), |
| (char *)pTarget + pTarget->name_table + 1, func_name ); |
| } |
| if (debugging_fixup) |
| { |
| NE_MODULE *pTarget = MODULE_GetPtr( module ); |
| fprintf( stddeb,"%d: %*.*s.%s=%04x:%04x\n", i + 1, |
| *((BYTE *)pTarget + pTarget->name_table), |
| *((BYTE *)pTarget + pTarget->name_table), |
| (char *)pTarget + pTarget->name_table + 1, |
| func_name, HIWORD(address), LOWORD(address) ); |
| } |
| break; |
| |
| case NE_RELTYPE_INTERNAL: |
| if ((rep->target1 & 0xff) == 0xff) |
| { |
| address = MODULE_GetEntryPoint( hModule, rep->target2 ); |
| } |
| else |
| { |
| address = (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( pSegTable[rep->target1-1].selector, rep->target2 ); |
| } |
| |
| dprintf_fixup(stddeb,"%d: %04x:%04x\n", |
| i + 1, HIWORD(address), LOWORD(address) ); |
| break; |
| |
| case NE_RELTYPE_OSFIXUP: |
| /* Relocation type 7: |
| * |
| * These appear to be used as fixups for the Windows |
| * floating point emulator. Let's just ignore them and |
| * try to use the hardware floating point. Linux should |
| * successfully emulate the coprocessor if it doesn't |
| * exist. |
| */ |
| dprintf_fixup(stddeb, |
| "%d: ADDR TYPE %d, TYPE %d, OFFSET %04x, ", |
| i + 1, rep->address_type, rep->relocation_type, |
| rep->offset); |
| dprintf_fixup(stddeb,"TARGET %04x %04x\n", |
| rep->target1, rep->target2); |
| continue; |
| |
| default: |
| dprintf_fixup(stddeb, |
| "%d: ADDR TYPE %d, TYPE %d, OFFSET %04x, ", |
| i + 1, rep->address_type, rep->relocation_type, |
| rep->offset); |
| dprintf_fixup(stddeb,"TARGET %04x %04x\n", |
| rep->target1, rep->target2); |
| free(reloc_entries); |
| return FALSE; |
| } |
| |
| offset = rep->offset; |
| |
| switch (rep->address_type) |
| { |
| case NE_RADDR_LOWBYTE: |
| do { |
| sp = PTR_SEG_OFF_TO_LIN( pSeg->selector, offset ); |
| dprintf_fixup(stddeb," %04x:%04x:%04x BYTE%s\n", |
| pSeg->selector, offset, *sp, additive ? " additive":""); |
| offset = *sp; |
| if(additive) |
| *(unsigned char*)sp = (unsigned char)(((int)address+offset) & 0xFF); |
| else |
| *(unsigned char*)sp = (unsigned char)((int)address & 0xFF); |
| } |
| while (offset != 0xffff && !additive); |
| break; |
| |
| case NE_RADDR_OFFSET16: |
| do { |
| sp = PTR_SEG_OFF_TO_LIN( pSeg->selector, offset ); |
| dprintf_fixup(stddeb," %04x:%04x:%04x OFFSET16%s\n", |
| pSeg->selector, offset, *sp, additive ? " additive" : "" ); |
| offset = *sp; |
| *sp = LOWORD(address); |
| if (additive) *sp += offset; |
| } |
| while (offset != 0xffff && !additive); |
| break; |
| |
| case NE_RADDR_POINTER32: |
| do { |
| sp = PTR_SEG_OFF_TO_LIN( pSeg->selector, offset ); |
| dprintf_fixup(stddeb," %04x:%04x:%04x POINTER32%s\n", |
| pSeg->selector, offset, *sp, additive ? " additive" : "" ); |
| offset = *sp; |
| *sp = LOWORD(address); |
| if (additive) *sp += offset; |
| *(sp+1) = HIWORD(address); |
| } |
| while (offset != 0xffff && !additive); |
| break; |
| |
| case NE_RADDR_SELECTOR: |
| do { |
| sp = PTR_SEG_OFF_TO_LIN( pSeg->selector, offset ); |
| dprintf_fixup(stddeb," %04x:%04x:%04x SELECTOR%s\n", |
| pSeg->selector, offset, *sp, additive ? " additive" : "" ); |
| offset = *sp; |
| *sp = HIWORD(address); |
| /* Borland creates additive records with offset zero. Strange, but OK */ |
| if(additive && offset) |
| fprintf(stderr,"Additive selector to %4.4x.Please report\n",offset); |
| } |
| /* FIXME: Quicken 5 has a zero offset fixup. This seems to work */ |
| while (offset && offset != 0xffff && !additive); |
| break; |
| |
| default: |
| dprintf_fixup(stddeb, |
| "%d: ADDR TYPE %d, TYPE %d, OFFSET %04x, ", |
| i + 1, rep->address_type, rep->relocation_type, |
| rep->offset); |
| dprintf_fixup(stddeb, |
| "TARGET %04x %04x\n", rep->target1, rep->target2); |
| free(reloc_entries); |
| return FALSE; |
| } |
| } |
| |
| free(reloc_entries); |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * NE_FixupPrologs |
| * |
| * Fixup the exported functions prologs. |
| */ |
| void NE_FixupPrologs( NE_MODULE *pModule ) |
| { |
| SEGTABLEENTRY *pSegTable; |
| WORD dgroup = 0; |
| WORD sel; |
| BYTE *p, *fixup_ptr, count; |
| |
| pSegTable = NE_SEG_TABLE(pModule); |
| if (pModule->flags & NE_FFLAGS_SINGLEDATA) |
| dgroup = pSegTable[pModule->dgroup-1].selector; |
| |
| dprintf_module( stddeb, "MODULE_FixupPrologs(%04x)\n", pModule->self ); |
| p = (BYTE *)pModule + pModule->entry_table; |
| while (*p) |
| { |
| if (p[1] == 0) /* Unused entry */ |
| { |
| p += 2; /* Skip it */ |
| continue; |
| } |
| if (p[1] == 0xfe) /* Constant entry */ |
| { |
| p += 2 + *p * 3; /* Skip it */ |
| continue; |
| } |
| |
| /* Now fixup the entries of this bundle */ |
| count = *p; |
| sel = p[1]; |
| p += 2; |
| while (count-- > 0) |
| { |
| dprintf_module( stddeb,"Flags: %04x, sel %02x ", *p, sel); |
| /* According to the output generated by TDUMP, the flags mean: |
| * 0x0001 function is exported |
| * 0x0002 Single data (seems to occur only in DLLs) |
| */ |
| if (sel == 0xff) { /* moveable */ |
| dprintf_module( stddeb, "(%02x) o %04x ", p[3], *(WORD *)(p+4) ); |
| fixup_ptr = (char *)GET_SEL_BASE(pSegTable[p[3]-1].selector) + *(WORD *)(p + 4); |
| } else { /* fixed */ |
| dprintf_module( stddeb, "offset %04x ", *(WORD *)(p+1) ); |
| fixup_ptr = (char *)GET_SEL_BASE(pSegTable[sel-1].selector) + *(WORD *)(p + 1); |
| } |
| dprintf_module( stddeb, "Signature: %02x %02x %02x,ff %x\n", |
| fixup_ptr[0], fixup_ptr[1], fixup_ptr[2], |
| pModule->flags ); |
| if (*p & 0x0001) |
| { |
| /* Verify the signature */ |
| if (((fixup_ptr[0] == 0x1e && fixup_ptr[1] == 0x58) |
| || (fixup_ptr[0] == 0x8c && fixup_ptr[1] == 0xd8)) |
| && fixup_ptr[2] == 0x90) |
| { |
| if (*p & 0x0002) |
| { |
| if (pModule->flags & NE_FFLAGS_MULTIPLEDATA) { |
| /* can this happen? */ |
| fprintf( stderr, "FixupPrologs got confused\n" ); |
| } |
| *fixup_ptr = 0xb8; /* MOV AX, */ |
| *(WORD *)(fixup_ptr+1) = dgroup; |
| } |
| else |
| { |
| if (pModule->flags & NE_FFLAGS_MULTIPLEDATA) { |
| fixup_ptr[0] = 0x90; /* non-library: NOPs */ |
| fixup_ptr[1] = 0x90; |
| fixup_ptr[2] = 0x90; |
| } |
| } |
| } else { |
| dprintf_fixup( stddeb, "Unknown signature\n" ); |
| } |
| } |
| else |
| dprintf_module( stddeb,"\n"); |
| p += (sel == 0xff) ? 6 : 3; |
| } |
| } |
| } |
| |
| |
| /*********************************************************************** |
| * NE_InitDLL |
| * |
| * Call the DLL initialization code |
| */ |
| static BOOL32 NE_InitDLL( HMODULE16 hModule ) |
| { |
| NE_MODULE *pModule; |
| SEGTABLEENTRY *pSegTable; |
| CONTEXT context; |
| |
| /* Registers at initialization must be: |
| * cx heap size |
| * di library instance |
| * ds data segment if any |
| * es:si command line (always 0) |
| */ |
| |
| if (!(pModule = MODULE_GetPtr( hModule ))) return FALSE; |
| pSegTable = NE_SEG_TABLE( pModule ); |
| |
| if (!(pModule->flags & NE_FFLAGS_LIBMODULE) || |
| (pModule->flags & NE_FFLAGS_WIN32)) return TRUE; /*not a library*/ |
| if (!pModule->cs) return TRUE; /* no initialization code */ |
| |
| memset( &context, 0, sizeof(context) ); |
| |
| if (!(pModule->flags & NE_FFLAGS_SINGLEDATA)) |
| { |
| if (pModule->flags & NE_FFLAGS_MULTIPLEDATA || pModule->dgroup) |
| { |
| /* Not SINGLEDATA */ |
| fprintf(stderr, "Library is not marked SINGLEDATA\n"); |
| exit(1); |
| } |
| else /* DATA NONE DLL */ |
| { |
| DS_reg(&context) = 0; |
| ECX_reg(&context) = 0; |
| } |
| } |
| else /* DATA SINGLE DLL */ |
| { |
| DS_reg(&context) = pSegTable[pModule->dgroup-1].selector; |
| ECX_reg(&context) = pModule->heap_size; |
| } |
| |
| CS_reg(&context) = pSegTable[pModule->cs-1].selector; |
| EIP_reg(&context) = pModule->ip; |
| EBP_reg(&context) = IF1632_Saved16_sp + (WORD)&((STACK16FRAME*)0)->bp; |
| EDI_reg(&context) = DS_reg(&context) ? DS_reg(&context) : hModule; |
| |
| |
| pModule->cs = 0; /* Don't initialize it twice */ |
| dprintf_dll( stddeb, "Calling LibMain, cs:ip=%04lx:%04x ds=%04lx di=%04x cx=%04x\n", |
| CS_reg(&context), IP_reg(&context), DS_reg(&context), |
| DI_reg(&context), CX_reg(&context) ); |
| CallTo16_regs_( &context ); |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * NE_InitializeDLLs |
| * |
| * Initialize the loaded DLLs. |
| */ |
| void NE_InitializeDLLs( HMODULE16 hModule ) |
| { |
| NE_MODULE *pModule; |
| HMODULE16 *pDLL; |
| |
| if (!(pModule = MODULE_GetPtr( hModule ))) return; |
| if (pModule->flags & NE_FFLAGS_WIN32) |
| { |
| /* PE_InitializeDLLs(hModule); */ |
| return; |
| } |
| if (pModule->dlls_to_init) |
| { |
| HGLOBAL16 to_init = pModule->dlls_to_init; |
| pModule->dlls_to_init = 0; |
| for (pDLL = (HMODULE16 *)GlobalLock16( to_init ); *pDLL; pDLL++) |
| { |
| NE_InitializeDLLs( *pDLL ); |
| } |
| GlobalFree16( to_init ); |
| } |
| NE_InitDLL( hModule ); |
| } |
| |
| |
| /*********************************************************************** |
| * NE_PatchCodeHandle |
| * |
| * Needed for self-loading modules. |
| */ |
| |
| /* It does nothing */ |
| void PatchCodeHandle(HANDLE16 hSel) |
| { |
| } |
| #endif /* WINELIB */ |
