| /* |
| * NE segment loading |
| * |
| * Copyright 1993 Robert J. Amstadt |
| * Copyright 1995 Alexandre Julliard |
| */ |
| |
| #include <assert.h> |
| #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 "global.h" |
| #include "task.h" |
| #include "selectors.h" |
| #include "callback.h" |
| #include "file.h" |
| #include "module.h" |
| #include "stackframe.h" |
| #include "debug.h" |
| #include "xmalloc.h" |
| |
| |
| /*********************************************************************** |
| * NE_GetRelocAddrName |
| */ |
| static const char *NE_GetRelocAddrName( BYTE addr_type, int additive ) |
| { |
| switch(addr_type & 0x7f) |
| { |
| case NE_RADDR_LOWBYTE: return additive ? "BYTE add" : "BYTE"; |
| case NE_RADDR_OFFSET16: return additive ? "OFFSET16 add" : "OFFSET16"; |
| case NE_RADDR_POINTER32: return additive ? "POINTER32 add" : "POINTER32"; |
| case NE_RADDR_SELECTOR: return additive ? "SELECTOR add" : "SELECTOR"; |
| case NE_RADDR_POINTER48: return additive ? "POINTER48 add" : "POINTER48"; |
| case NE_RADDR_OFFSET32: return additive ? "OFFSET32 add" : "OFFSET32"; |
| } |
| return "???"; |
| } |
| |
| |
| /*********************************************************************** |
| * NE_LoadSegment |
| */ |
| BOOL32 NE_LoadSegment( NE_MODULE *pModule, WORD segnum ) |
| { |
| SEGTABLEENTRY *pSegTable, *pSeg; |
| WORD *pModuleTable; |
| WORD count, i, offset, next_offset; |
| HMODULE16 module; |
| FARPROC16 address = 0; |
| int fd; |
| struct relocation_entry_s *rep, *reloc_entries; |
| BYTE *func_name; |
| int size; |
| char* mem; |
| |
| char buffer[256]; |
| int ordinal, additive; |
| unsigned short *sp; |
| |
| 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 = NE_OpenFile( pModule ); |
| TRACE(module, "Loading segment %d, selector=%04x, flags=%04x\n", |
| segnum, pSeg->selector, pSeg->flags ); |
| 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; |
| DWORD oldstack; |
| WORD oldselector, newselector; |
| THDB *thdb = THREAD_Current(); |
| HFILE32 hf = FILE_DupUnixHandle( fd ); |
| |
| selfloadheader = (SELFLOADHEADER *) |
| PTR_SEG_OFF_TO_LIN(pSegTable->selector,0); |
| oldstack = thdb->cur_stack; |
| oldselector = pSeg->selector; |
| thdb->cur_stack = PTR_SEG_OFF_TO_SEGPTR(pModule->self_loading_sel, |
| 0xff00 - sizeof(*stack16Top)); |
| stack16Top = (STACK16FRAME *)PTR_SEG_TO_LIN(thdb->cur_stack); |
| stack16Top->frame32 = 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 = Callbacks->CallLoadAppSegProc(selfloadheader->LoadAppSeg, |
| pModule->self, 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; |
| TRACE(module, "New selector allocated for dgroup segment:Old=%d,New=%d\n", |
| oldselector, newselector); |
| } else { |
| FreeSelector(pSeg->selector); |
| pSeg->selector = newselector; |
| } |
| } |
| |
| thdb->cur_stack = oldstack; |
| } |
| 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 doc 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; |
| |
| TRACE(fixup, "Fixups for %.*s, segment %d, selector %04x\n", |
| *((BYTE *)pModule + pModule->name_table), |
| (char *)pModule + pModule->name_table + 1, |
| segnum, pSeg->selector ); |
| TRACE(segment, "Fixups for %.*s, segment %d, selector %04x\n", |
| *((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)) |
| { |
| WARN(fixup, "Unable to read relocation information\n" ); |
| return FALSE; |
| } |
| |
| /* |
| * Go through the relocation table one 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 = NE_GetEntryPoint( module, ordinal ); |
| if (!address) |
| { |
| NE_MODULE *pTarget = NE_GetPtr( module ); |
| if (!pTarget) |
| WARN(module, "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 |
| WARN(module, "No handler for %.*s.%d, setting to 0:0\n", |
| *((BYTE *)pTarget + pTarget->name_table), |
| (char *)pTarget + pTarget->name_table + 1, |
| ordinal ); |
| } |
| if (TRACE_ON(fixup)) |
| { |
| NE_MODULE *pTarget = NE_GetPtr( module ); |
| TRACE( fixup, "%d: %.*s.%d=%04x:%04x %s\n", i + 1, |
| *((BYTE *)pTarget + pTarget->name_table), |
| (char *)pTarget + pTarget->name_table + 1, |
| ordinal, HIWORD(address), LOWORD(address), |
| NE_GetRelocAddrName( rep->address_type, additive ) ); |
| } |
| 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 = NE_GetOrdinal( module, func_name ); |
| address = NE_GetEntryPoint( module, ordinal ); |
| |
| if (ERR_ON(fixup) && !address) |
| { |
| NE_MODULE *pTarget = NE_GetPtr( module ); |
| ERR(fixup, "Warning: no handler for %.*s.%s, setting to 0:0\n", |
| *((BYTE *)pTarget + pTarget->name_table), |
| (char *)pTarget + pTarget->name_table + 1, func_name ); |
| } |
| if (TRACE_ON(fixup)) |
| { |
| NE_MODULE *pTarget = NE_GetPtr( module ); |
| TRACE( fixup, "%d: %.*s.%s=%04x:%04x %s\n", i + 1, |
| *((BYTE *)pTarget + pTarget->name_table), |
| (char *)pTarget + pTarget->name_table + 1, |
| func_name, HIWORD(address), LOWORD(address), |
| NE_GetRelocAddrName( rep->address_type, additive ) ); |
| } |
| break; |
| |
| case NE_RELTYPE_INTERNAL: |
| if ((rep->target1 & 0xff) == 0xff) |
| { |
| address = NE_GetEntryPoint( pModule->self, rep->target2 ); |
| } |
| else |
| { |
| address = (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( pSegTable[rep->target1-1].selector, rep->target2 ); |
| } |
| |
| TRACE( fixup,"%d: %04x:%04x %s\n", |
| i + 1, HIWORD(address), LOWORD(address), |
| NE_GetRelocAddrName( rep->address_type, additive ) ); |
| 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. |
| */ |
| TRACE( fixup, "%d: TYPE %d, OFFSET %04x, TARGET %04x %04x %s\n", |
| i + 1, rep->relocation_type, rep->offset, |
| rep->target1, rep->target2, |
| NE_GetRelocAddrName( rep->address_type, additive ) ); |
| continue; |
| } |
| |
| offset = rep->offset; |
| |
| /* Apparently, high bit of address_type is sometimes set; */ |
| /* we ignore it for now */ |
| if (rep->address_type > NE_RADDR_OFFSET32) |
| { |
| char module[10]; |
| GetModuleName( pModule->self, module, sizeof(module) ); |
| ERR( fixup, "WARNING: module %s: unknown reloc addr type = 0x%02x. Please report.\n", |
| module, rep->address_type ); |
| } |
| |
| if (additive) |
| { |
| sp = PTR_SEG_OFF_TO_LIN( pSeg->selector, offset ); |
| TRACE( fixup," %04x:%04x\n", offset, *sp ); |
| switch (rep->address_type & 0x7f) |
| { |
| case NE_RADDR_LOWBYTE: |
| *(BYTE *)sp += LOBYTE((int)address); |
| break; |
| case NE_RADDR_OFFSET16: |
| *sp += LOWORD(address); |
| break; |
| case NE_RADDR_POINTER32: |
| *sp += LOWORD(address); |
| *(sp+1) = HIWORD(address); |
| break; |
| case NE_RADDR_SELECTOR: |
| /* Borland creates additive records with offset zero. Strange, but OK */ |
| if (*sp) |
| ERR(fixup,"Additive selector to %04x.Please report\n",*sp); |
| else |
| *sp = HIWORD(address); |
| break; |
| default: |
| goto unknown; |
| } |
| } |
| else /* non-additive fixup */ |
| { |
| do |
| { |
| sp = PTR_SEG_OFF_TO_LIN( pSeg->selector, offset ); |
| next_offset = *sp; |
| TRACE( fixup," %04x:%04x\n", offset, *sp ); |
| switch (rep->address_type & 0x7f) |
| { |
| case NE_RADDR_LOWBYTE: |
| *(BYTE *)sp = LOBYTE((int)address); |
| break; |
| case NE_RADDR_OFFSET16: |
| *sp = LOWORD(address); |
| break; |
| case NE_RADDR_POINTER32: |
| *(FARPROC16 *)sp = address; |
| break; |
| case NE_RADDR_SELECTOR: |
| *sp = SELECTOROF(address); |
| break; |
| default: |
| goto unknown; |
| } |
| if (next_offset == offset) break; /* avoid infinite loop */ |
| if (next_offset >= GlobalSize16(pSeg->selector)) break; |
| offset = next_offset; |
| } while (offset && (offset != 0xffff)); |
| } |
| } |
| |
| free(reloc_entries); |
| return TRUE; |
| |
| unknown: |
| WARN(fixup, "WARNING: %d: unknown ADDR TYPE %d, " |
| "TYPE %d, OFFSET %04x, TARGET %04x %04x\n", |
| i + 1, rep->address_type, rep->relocation_type, |
| rep->offset, rep->target1, rep->target2); |
| free(reloc_entries); |
| return FALSE; |
| } |
| |
| |
| /*********************************************************************** |
| * NE_LoadAllSegments |
| */ |
| BOOL32 NE_LoadAllSegments( NE_MODULE *pModule ) |
| { |
| int i; |
| |
| if (pModule->flags & NE_FFLAGS_SELFLOAD) |
| { |
| HFILE32 hf; |
| /* Handle self loading modules */ |
| SEGTABLEENTRY * pSegTable = (SEGTABLEENTRY *) NE_SEG_TABLE(pModule); |
| SELFLOADHEADER *selfloadheader; |
| STACK16FRAME *stack16Top; |
| THDB *thdb = THREAD_Current(); |
| HMODULE16 hselfload = GetModuleHandle16("WPROCS"); |
| DWORD oldstack; |
| WORD saved_dgroup = pSegTable[pModule->dgroup - 1].selector; |
| |
| TRACE(module, "%.*s is a self-loading module!\n", |
| *((BYTE*)pModule + pModule->name_table), |
| (char *)pModule + pModule->name_table + 1); |
| if (!NE_LoadSegment( pModule, 1 )) return FALSE; |
| selfloadheader = (SELFLOADHEADER *) |
| PTR_SEG_OFF_TO_LIN(pSegTable->selector, 0); |
| selfloadheader->EntryAddrProc = NE_GetEntryPoint(hselfload,27); |
| selfloadheader->MyAlloc = NE_GetEntryPoint(hselfload,28); |
| selfloadheader->SetOwner = NE_GetEntryPoint(GetModuleHandle16("KERNEL"),403); |
| pModule->self_loading_sel = GlobalHandleToSel(GLOBAL_Alloc(GMEM_ZEROINIT, 0xFF00, pModule->self, FALSE, FALSE, FALSE)); |
| oldstack = thdb->cur_stack; |
| thdb->cur_stack = PTR_SEG_OFF_TO_SEGPTR(pModule->self_loading_sel, |
| 0xff00 - sizeof(*stack16Top) ); |
| stack16Top = (STACK16FRAME *)PTR_SEG_TO_LIN(thdb->cur_stack); |
| stack16Top->frame32 = 0; |
| stack16Top->ebp = 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; |
| |
| hf = FILE_DupUnixHandle( NE_OpenFile( pModule ) ); |
| Callbacks->CallBootAppProc(selfloadheader->BootApp, pModule->self, hf); |
| _lclose32(hf); |
| /* some BootApp procs overwrite the selector of dgroup */ |
| pSegTable[pModule->dgroup - 1].selector = saved_dgroup; |
| thdb->cur_stack = oldstack; |
| for (i = 2; i <= pModule->seg_count; i++) |
| if (!NE_LoadSegment( pModule, i )) return FALSE; |
| } |
| else |
| { |
| for (i = 1; i <= pModule->seg_count; i++) |
| if (!NE_LoadSegment( pModule, i )) return FALSE; |
| } |
| 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; |
| dbg_decl_str(module, 512); |
| |
| pSegTable = NE_SEG_TABLE(pModule); |
| if (pModule->flags & NE_FFLAGS_SINGLEDATA) |
| dgroup = pSegTable[pModule->dgroup-1].selector; |
| |
| TRACE(module, "(%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) |
| { |
| dbg_reset_str(module); |
| dsprintf(module,"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 */ |
| dsprintf(module, "(%02x) o %04x", p[3], *(WORD *)(p+4) ); |
| fixup_ptr = (char *)GET_SEL_BASE(pSegTable[p[3]-1].selector) + *(WORD *)(p + 4); |
| } else { /* fixed */ |
| dsprintf(module, "offset %04x", *(WORD *)(p+1) ); |
| fixup_ptr = (char *)GET_SEL_BASE(pSegTable[sel-1].selector) + |
| *(WORD *)(p + 1); |
| } |
| TRACE(module, "%s Signature: %02x %02x %02x,ff %x\n", |
| dbg_str(module), 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? */ |
| ERR(fixup, "FixupPrologs got confused\n" ); |
| } |
| else if (pModule->flags & NE_FFLAGS_SINGLEDATA) |
| { |
| *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 { |
| WARN(fixup, "Unknown signature\n" ); |
| } |
| } |
| else |
| TRACE(module,"\n"); |
| p += (sel == 0xff) ? 6 : 3; |
| } |
| } |
| } |
| |
| /*********************************************************************** |
| * NE_GetDLLInitParams |
| */ |
| static VOID NE_GetDLLInitParams( NE_MODULE *pModule, |
| WORD *hInst, WORD *ds, WORD *heap ) |
| { |
| SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule ); |
| |
| if (!(pModule->flags & NE_FFLAGS_SINGLEDATA)) |
| { |
| if (pModule->flags & NE_FFLAGS_MULTIPLEDATA || pModule->dgroup) |
| { |
| /* Not SINGLEDATA */ |
| ERR(dll, "Library is not marked SINGLEDATA\n"); |
| exit(1); |
| } |
| else /* DATA NONE DLL */ |
| { |
| *ds = 0; |
| *heap = 0; |
| } |
| } |
| else /* DATA SINGLE DLL */ |
| { |
| if (pModule->dgroup) { |
| *ds = pSegTable[pModule->dgroup-1].selector; |
| *heap = pModule->heap_size; |
| } |
| else /* hmm, DLL has no dgroup, |
| but why has it NE_FFLAGS_SINGLEDATA set ? |
| Buggy DLL compiler ? */ |
| { |
| *ds = 0; |
| *heap = 0; |
| } |
| } |
| |
| *hInst = *ds ? *ds : pModule->self; |
| } |
| |
| |
| /*********************************************************************** |
| * NE_InitDLL |
| * |
| * Call the DLL initialization code |
| */ |
| static BOOL32 NE_InitDLL( TDB* pTask, NE_MODULE *pModule ) |
| { |
| SEGTABLEENTRY *pSegTable; |
| WORD hInst, ds, heap, fs; |
| CONTEXT context; |
| |
| pSegTable = NE_SEG_TABLE( pModule ); |
| |
| if (!(pModule->flags & NE_FFLAGS_LIBMODULE) || |
| (pModule->flags & NE_FFLAGS_WIN32)) return TRUE; /*not a library*/ |
| |
| /* Call USER signal handler. This is necessary to install a |
| * proper loader for HICON and HCURSOR resources that this DLL |
| * may contain. InitApp() does this for task modules. */ |
| |
| if (pTask && pTask->userhandler) |
| { |
| pTask->userhandler( pModule->self, USIG_DLL_LOAD, 0, pTask->hInstance, |
| pTask->hQueue ); |
| } |
| |
| if (!pModule->cs) return TRUE; /* no initialization code */ |
| |
| |
| /* Registers at initialization must be: |
| * cx heap size |
| * di library instance |
| * ds data segment if any |
| * es:si command line (always 0) |
| */ |
| |
| memset( &context, 0, sizeof(context) ); |
| |
| NE_GetDLLInitParams( pModule, &hInst, &ds, &heap ); |
| GET_FS( fs ); |
| |
| ECX_reg(&context) = heap; |
| EDI_reg(&context) = hInst; |
| DS_reg(&context) = ds; |
| ES_reg(&context) = ds; /* who knows ... */ |
| FS_reg(&context) = fs; |
| |
| CS_reg(&context) = pSegTable[pModule->cs-1].selector; |
| EIP_reg(&context) = pModule->ip; |
| EBP_reg(&context) = OFFSETOF(THREAD_Current()->cur_stack) |
| + (WORD)&((STACK16FRAME*)0)->bp; |
| |
| |
| pModule->cs = 0; /* Don't initialize it twice */ |
| TRACE(dll, "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) ); |
| Callbacks->CallRegisterShortProc( &context, 0 ); |
| return TRUE; |
| } |
| |
| /*********************************************************************** |
| * NE_CallDllEntryPoint |
| * |
| * Call the DllEntryPoint of DLLs with subsystem >= 4.0 |
| */ |
| |
| static void NE_CallDllEntryPoint( NE_MODULE *pModule, DWORD dwReason ) |
| { |
| WORD hInst, ds, heap, fs; |
| FARPROC16 entryPoint; |
| WORD ordinal; |
| CONTEXT context; |
| THDB *thdb = THREAD_Current(); |
| LPBYTE stack = (LPBYTE)THREAD_STACK16(thdb); |
| |
| if (pModule->expected_version < 0x0400) return; |
| if (!(ordinal = NE_GetOrdinal( pModule->self, "DllEntryPoint" ))) return; |
| if (!(entryPoint = NE_GetEntryPoint( pModule->self, ordinal ))) return; |
| |
| memset( &context, 0, sizeof(context) ); |
| |
| NE_GetDLLInitParams( pModule, &hInst, &ds, &heap ); |
| GET_FS( fs ); |
| |
| DS_reg(&context) = ds; |
| ES_reg(&context) = ds; /* who knows ... */ |
| FS_reg(&context) = fs; |
| |
| CS_reg(&context) = HIWORD(entryPoint); |
| IP_reg(&context) = LOWORD(entryPoint); |
| EBP_reg(&context) = OFFSETOF( thdb->cur_stack ) |
| + (WORD)&((STACK16FRAME*)0)->bp; |
| |
| *(DWORD *)(stack - 4) = dwReason; /* dwReason */ |
| *(WORD *) (stack - 6) = hInst; /* hInst */ |
| *(WORD *) (stack - 8) = ds; /* wDS */ |
| *(WORD *) (stack - 10) = heap; /* wHeapSize */ |
| *(DWORD *)(stack - 14) = 0; /* dwReserved1 */ |
| *(WORD *) (stack - 16) = 0; /* wReserved2 */ |
| |
| TRACE(dll, "Calling DllEntryPoint, cs:ip=%04lx:%04x\n", |
| CS_reg(&context), IP_reg(&context)); |
| |
| Callbacks->CallRegisterShortProc( &context, 16 ); |
| } |
| |
| |
| /*********************************************************************** |
| * NE_InitializeDLLs |
| * |
| * Recursively initialize all DLLs (according to the order in which |
| * they where loaded). |
| */ |
| void NE_InitializeDLLs( HMODULE16 hModule ) |
| { |
| TDB* pTask = (TDB*)GlobalLock16(GetCurrentTask()); |
| NE_MODULE *pModule; |
| HMODULE16 *pDLL; |
| |
| if (!(pModule = NE_GetPtr( hModule ))) return; |
| assert( !(pModule->flags & NE_FFLAGS_WIN32) ); |
| |
| 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( pTask, pModule ); |
| NE_CallDllEntryPoint( pModule, DLL_PROCESS_ATTACH ); |
| } |
| |
| |
| /*********************************************************************** |
| * NE_CreateInstance |
| * |
| * If lib_only is TRUE, handle the module like a library even if it is a .EXE |
| */ |
| HINSTANCE16 NE_CreateInstance( NE_MODULE *pModule, HINSTANCE16 *prev, |
| BOOL32 lib_only ) |
| { |
| SEGTABLEENTRY *pSegment; |
| int minsize; |
| HINSTANCE16 hNewInstance; |
| |
| if (pModule->dgroup == 0) |
| { |
| if (prev) *prev = pModule->self; |
| return pModule->self; |
| } |
| |
| pSegment = NE_SEG_TABLE( pModule ) + pModule->dgroup - 1; |
| if (prev) *prev = pSegment->selector; |
| |
| /* if it's a library, create a new instance only the first time */ |
| if (pSegment->selector) |
| { |
| if (pModule->flags & NE_FFLAGS_LIBMODULE) return pSegment->selector; |
| if (lib_only) return pSegment->selector; |
| } |
| |
| minsize = pSegment->minsize ? pSegment->minsize : 0x10000; |
| if (pModule->ss == pModule->dgroup) minsize += pModule->stack_size; |
| minsize += pModule->heap_size; |
| hNewInstance = GLOBAL_Alloc( GMEM_ZEROINIT | GMEM_FIXED, minsize, |
| pModule->self, FALSE, FALSE, FALSE ); |
| if (!hNewInstance) return 0; |
| pSegment->selector = hNewInstance; |
| return hNewInstance; |
| } |
| |
| |
| /*********************************************************************** |
| * PatchCodeHandle |
| * |
| * Needed for self-loading modules. |
| */ |
| |
| /* It does nothing */ |
| void WINAPI PatchCodeHandle(HANDLE16 hSel) |
| { |
| FIXME(module,"(%04x): stub.\n",hSel); |
| } |
| |
| |
| /*********************************************************************** |
| * NE_Ne2MemFlags |
| * |
| * This function translates NE segment flags to GlobalAlloc flags |
| */ |
| static WORD NE_Ne2MemFlags(WORD flags) |
| { |
| WORD memflags = 0; |
| #if 0 |
| if (flags & NE_SEGFLAGS_DISCARDABLE) |
| memflags |= GMEM_DISCARDABLE; |
| if (flags & NE_SEGFLAGS_MOVEABLE || |
| ( ! (flags & NE_SEGFLAGS_DATA) && |
| ! (flags & NE_SEGFLAGS_LOADED) && |
| ! (flags & NE_SEGFLAGS_ALLOCATED) |
| ) |
| ) |
| memflags |= GMEM_MOVEABLE; |
| memflags |= GMEM_ZEROINIT; |
| #else |
| memflags = GMEM_ZEROINIT | GMEM_FIXED; |
| return memflags; |
| #endif |
| } |
| |
| /*********************************************************************** |
| * NE_AllocateSegment (WPROCS.26) |
| */ |
| DWORD WINAPI NE_AllocateSegment( WORD wFlags, WORD wSize, WORD wElem ) |
| { |
| WORD size = wSize << wElem; |
| HANDLE16 hMem = GlobalAlloc16( NE_Ne2MemFlags(wFlags), size); |
| return MAKELONG( hMem, GlobalHandleToSel(hMem) ); |
| } |
| |
| |
| /*********************************************************************** |
| * NE_CreateSegments |
| */ |
| BOOL32 NE_CreateSegments( NE_MODULE *pModule ) |
| { |
| SEGTABLEENTRY *pSegment; |
| int i, minsize; |
| |
| assert( !(pModule->flags & NE_FFLAGS_WIN32) ); |
| |
| pSegment = NE_SEG_TABLE( pModule ); |
| for (i = 1; i <= pModule->seg_count; i++, pSegment++) |
| { |
| minsize = pSegment->minsize ? pSegment->minsize : 0x10000; |
| if (i == pModule->ss) minsize += pModule->stack_size; |
| /* The DGROUP is allocated by NE_CreateInstance */ |
| if (i == pModule->dgroup) continue; |
| pSegment->selector = GLOBAL_Alloc( NE_Ne2MemFlags(pSegment->flags), |
| minsize, pModule->self, |
| !(pSegment->flags & NE_SEGFLAGS_DATA), |
| FALSE, |
| FALSE /*pSegment->flags & NE_SEGFLAGS_READONLY*/ ); |
| if (!pSegment->selector) return FALSE; |
| } |
| |
| pModule->dgroup_entry = pModule->dgroup ? pModule->seg_table + |
| (pModule->dgroup - 1) * sizeof(SEGTABLEENTRY) : 0; |
| return TRUE; |
| } |
| |
| |
| /********************************************************************** |
| * IsSharedSelector (KERNEL.345) |
| */ |
| BOOL16 WINAPI IsSharedSelector( HANDLE16 selector ) |
| { |
| /* Check whether the selector belongs to a DLL */ |
| NE_MODULE *pModule = NE_GetPtr( selector ); |
| if (!pModule) return FALSE; |
| return (pModule->flags & NE_FFLAGS_LIBMODULE) != 0; |
| } |
