Sweden-Number/loader/ne/module.c

1207 lines
36 KiB
C

/*
* NE modules
*
* Copyright 1995 Alexandre Julliard
*/
#include <assert.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "module.h"
#include "file.h"
#include "ldt.h"
#include "callback.h"
#include "heap.h"
#include "task.h"
#include "global.h"
#include "process.h"
#include "toolhelp.h"
#include "snoop.h"
#include "stackframe.h"
#include "debug.h"
FARPROC16 (*fnSNOOP16_GetProcAddress16)(HMODULE16,DWORD,FARPROC16) = NULL;
void (*fnSNOOP16_RegisterDLL)(NE_MODULE*,LPCSTR) = NULL;
#define hFirstModule (pThhook->hExeHead)
static NE_MODULE *pCachedModule = 0; /* Module cached by NE_OpenFile */
static HMODULE16 NE_LoadBuiltin(LPCSTR name,BOOL32 force) { return 0; }
HMODULE16 (*fnBUILTIN_LoadModule)(LPCSTR name,BOOL32 force) = NE_LoadBuiltin;
/***********************************************************************
* NE_GetPtr
*/
NE_MODULE *NE_GetPtr( HMODULE16 hModule )
{
return (NE_MODULE *)GlobalLock16( GetExePtr(hModule) );
}
/***********************************************************************
* NE_DumpModule
*/
void NE_DumpModule( HMODULE16 hModule )
{
int i, ordinal;
SEGTABLEENTRY *pSeg;
BYTE *pstr;
WORD *pword;
NE_MODULE *pModule;
if (!(pModule = NE_GetPtr( hModule )))
{
MSG( "**** %04x is not a module handle\n", hModule );
return;
}
/* Dump the module info */
DUMP( "---\n" );
DUMP( "Module %04x:\n", hModule );
DUMP( "count=%d flags=%04x heap=%d stack=%d\n",
pModule->count, pModule->flags,
pModule->heap_size, pModule->stack_size );
DUMP( "cs:ip=%04x:%04x ss:sp=%04x:%04x ds=%04x nb seg=%d modrefs=%d\n",
pModule->cs, pModule->ip, pModule->ss, pModule->sp, pModule->dgroup,
pModule->seg_count, pModule->modref_count );
DUMP( "os_flags=%d swap_area=%d version=%04x\n",
pModule->os_flags, pModule->min_swap_area,
pModule->expected_version );
if (pModule->flags & NE_FFLAGS_WIN32)
DUMP( "PE module=%08x\n", pModule->module32 );
/* Dump the file info */
DUMP( "---\n" );
DUMP( "Filename: '%s'\n", NE_MODULE_NAME(pModule) );
/* Dump the segment table */
DUMP( "---\n" );
DUMP( "Segment table:\n" );
pSeg = NE_SEG_TABLE( pModule );
for (i = 0; i < pModule->seg_count; i++, pSeg++)
DUMP( "%02x: pos=%d size=%d flags=%04x minsize=%d hSeg=%04x\n",
i + 1, pSeg->filepos, pSeg->size, pSeg->flags,
pSeg->minsize, pSeg->hSeg );
/* Dump the resource table */
DUMP( "---\n" );
DUMP( "Resource table:\n" );
if (pModule->res_table)
{
pword = (WORD *)((BYTE *)pModule + pModule->res_table);
DUMP( "Alignment: %d\n", *pword++ );
while (*pword)
{
struct resource_typeinfo_s *ptr = (struct resource_typeinfo_s *)pword;
struct resource_nameinfo_s *pname = (struct resource_nameinfo_s *)(ptr + 1);
DUMP( "id=%04x count=%d\n", ptr->type_id, ptr->count );
for (i = 0; i < ptr->count; i++, pname++)
DUMP( "offset=%d len=%d id=%04x\n",
pname->offset, pname->length, pname->id );
pword = (WORD *)pname;
}
}
else DUMP( "None\n" );
/* Dump the resident name table */
DUMP( "---\n" );
DUMP( "Resident-name table:\n" );
pstr = (char *)pModule + pModule->name_table;
while (*pstr)
{
DUMP( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
*(WORD *)(pstr + *pstr + 1) );
pstr += *pstr + 1 + sizeof(WORD);
}
/* Dump the module reference table */
DUMP( "---\n" );
DUMP( "Module ref table:\n" );
if (pModule->modref_table)
{
pword = (WORD *)((BYTE *)pModule + pModule->modref_table);
for (i = 0; i < pModule->modref_count; i++, pword++)
{
char name[10];
GetModuleName( *pword, name, sizeof(name) );
DUMP( "%d: %04x -> '%s'\n", i, *pword, name );
}
}
else DUMP( "None\n" );
/* Dump the entry table */
DUMP( "---\n" );
DUMP( "Entry table:\n" );
pstr = (char *)pModule + pModule->entry_table;
ordinal = 1;
while (*pstr)
{
DUMP( "Bundle %d-%d: %02x\n", ordinal, ordinal + *pstr - 1, pstr[1]);
if (!pstr[1])
{
ordinal += *pstr;
pstr += 2;
}
else if ((BYTE)pstr[1] == 0xff) /* moveable */
{
i = *pstr;
pstr += 2;
while (i--)
{
DUMP( "%d: %02x:%04x (moveable)\n",
ordinal++, pstr[3], *(WORD *)(pstr + 4) );
pstr += 6;
}
}
else /* fixed */
{
i = *pstr;
pstr += 2;
while (i--)
{
DUMP( "%d: %04x (fixed)\n",
ordinal++, *(WORD *)(pstr + 1) );
pstr += 3;
}
}
}
/* Dump the non-resident names table */
DUMP( "---\n" );
DUMP( "Non-resident names table:\n" );
if (pModule->nrname_handle)
{
pstr = (char *)GlobalLock16( pModule->nrname_handle );
while (*pstr)
{
DUMP( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
*(WORD *)(pstr + *pstr + 1) );
pstr += *pstr + 1 + sizeof(WORD);
}
}
DUMP( "\n" );
}
/***********************************************************************
* NE_WalkModules
*
* Walk the module list and print the modules.
*/
void NE_WalkModules(void)
{
HMODULE16 hModule = hFirstModule;
MSG( "Module Flags Name\n" );
while (hModule)
{
NE_MODULE *pModule = NE_GetPtr( hModule );
if (!pModule)
{
MSG( "Bad module %04x in list\n", hModule );
return;
}
MSG( " %04x %04x %.*s\n", hModule, pModule->flags,
*((char *)pModule + pModule->name_table),
(char *)pModule + pModule->name_table + 1 );
hModule = pModule->next;
}
}
/**********************************************************************
* NE_RegisterModule
*/
void NE_RegisterModule( NE_MODULE *pModule )
{
pModule->next = hFirstModule;
hFirstModule = pModule->self;
}
/***********************************************************************
* NE_GetOrdinal
*
* Lookup the ordinal for a given name.
*/
WORD NE_GetOrdinal( HMODULE16 hModule, const char *name )
{
unsigned char buffer[256], *cpnt;
BYTE len;
NE_MODULE *pModule;
if (!(pModule = NE_GetPtr( hModule ))) return 0;
assert( !(pModule->flags & NE_FFLAGS_WIN32) );
TRACE( module, "(%04x,'%s')\n", hModule, name );
/* First handle names of the form '#xxxx' */
if (name[0] == '#') return atoi( name + 1 );
/* Now copy and uppercase the string */
strcpy( buffer, name );
CharUpper32A( buffer );
len = strlen( buffer );
/* First search the resident names */
cpnt = (char *)pModule + pModule->name_table;
/* Skip the first entry (module name) */
cpnt += *cpnt + 1 + sizeof(WORD);
while (*cpnt)
{
if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
{
TRACE(module, " Found: ordinal=%d\n",
*(WORD *)(cpnt + *cpnt + 1) );
return *(WORD *)(cpnt + *cpnt + 1);
}
cpnt += *cpnt + 1 + sizeof(WORD);
}
/* Now search the non-resident names table */
if (!pModule->nrname_handle) return 0; /* No non-resident table */
cpnt = (char *)GlobalLock16( pModule->nrname_handle );
/* Skip the first entry (module description string) */
cpnt += *cpnt + 1 + sizeof(WORD);
while (*cpnt)
{
if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
{
TRACE(module, " Found: ordinal=%d\n",
*(WORD *)(cpnt + *cpnt + 1) );
return *(WORD *)(cpnt + *cpnt + 1);
}
cpnt += *cpnt + 1 + sizeof(WORD);
}
return 0;
}
/***********************************************************************
* NE_GetEntryPoint (WPROCS.27)
*
* Return the entry point for a given ordinal.
*/
FARPROC16 NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal )
{
return NE_GetEntryPointEx( hModule, ordinal, TRUE );
}
FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop )
{
NE_MODULE *pModule;
WORD curOrdinal = 1;
BYTE *p;
WORD sel, offset;
if (!(pModule = NE_GetPtr( hModule ))) return 0;
assert( !(pModule->flags & NE_FFLAGS_WIN32) );
p = (BYTE *)pModule + pModule->entry_table;
while (*p && (curOrdinal + *p <= ordinal))
{
/* Skipping this bundle */
curOrdinal += *p;
switch(p[1])
{
case 0: p += 2; break; /* unused */
case 0xff: p += 2 + *p * 6; break; /* moveable */
default: p += 2 + *p * 3; break; /* fixed */
}
}
if (!*p) return 0;
switch(p[1])
{
case 0: /* unused */
return 0;
case 0xff: /* moveable */
p += 2 + 6 * (ordinal - curOrdinal);
sel = p[3];
offset = *(WORD *)(p + 4);
break;
default: /* fixed */
sel = p[1];
p += 2 + 3 * (ordinal - curOrdinal);
offset = *(WORD *)(p + 1);
break;
}
if (sel == 0xfe) sel = 0xffff; /* constant entry */
else sel = GlobalHandleToSel(NE_SEG_TABLE(pModule)[sel-1].hSeg);
if (sel==0xffff)
return (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset );
if (!snoop || !fnSNOOP16_GetProcAddress16)
return (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset );
else
return (FARPROC16)fnSNOOP16_GetProcAddress16(hModule,ordinal,(FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset ));
}
/***********************************************************************
* NE_SetEntryPoint
*
* Change the value of an entry point. Use with caution!
* It can only change the offset value, not the selector.
*/
BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset )
{
NE_MODULE *pModule;
WORD curOrdinal = 1;
BYTE *p;
if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
assert( !(pModule->flags & NE_FFLAGS_WIN32) );
p = (BYTE *)pModule + pModule->entry_table;
while (*p && (curOrdinal + *p <= ordinal))
{
/* Skipping this bundle */
curOrdinal += *p;
switch(p[1])
{
case 0: p += 2; break; /* unused */
case 0xff: p += 2 + *p * 6; break; /* moveable */
default: p += 2 + *p * 3; break; /* fixed */
}
}
if (!*p) return FALSE;
switch(p[1])
{
case 0: /* unused */
return FALSE;
case 0xff: /* moveable */
p += 2 + 6 * (ordinal - curOrdinal);
*(WORD *)(p + 4) = offset;
break;
default: /* fixed */
p += 2 + 3 * (ordinal - curOrdinal);
*(WORD *)(p + 1) = offset;
break;
}
return TRUE;
}
/***********************************************************************
* NE_OpenFile
*/
int NE_OpenFile( NE_MODULE *pModule )
{
DOS_FULL_NAME full_name;
char *name;
static int cachedfd = -1;
TRACE( module, "(%p) cache: mod=%p fd=%d\n",
pModule, pCachedModule, cachedfd );
if (pCachedModule == pModule) return cachedfd;
close( cachedfd );
pCachedModule = pModule;
name = NE_MODULE_NAME( pModule );
if (!DOSFS_GetFullName( name, TRUE, &full_name ) ||
(cachedfd = open( full_name.long_name, O_RDONLY )) == -1)
MSG( "Can't open file '%s' for module %04x\n", name, pModule->self );
TRACE(module, "opened '%s' -> %d\n",
name, cachedfd );
return cachedfd;
}
/***********************************************************************
* NE_LoadExeHeader
*/
static HMODULE16 NE_LoadExeHeader( HFILE16 hFile, OFSTRUCT *ofs )
{
IMAGE_DOS_HEADER mz_header;
IMAGE_OS2_HEADER ne_header;
int size;
HMODULE16 hModule;
NE_MODULE *pModule;
BYTE *pData;
char *buffer, *fastload = NULL;
int fastload_offset = 0, fastload_length = 0;
/* Read a block from either the file or the fast-load area. */
#define READ(offset,size,buffer) \
((fastload && ((offset) >= fastload_offset) && \
((offset)+(size) <= fastload_offset+fastload_length)) ? \
(memcpy( buffer, fastload+(offset)-fastload_offset, (size) ), TRUE) : \
(_llseek16( hFile, (offset), SEEK_SET), \
_hread16( hFile, (buffer), (size) ) == (size)))
_llseek16( hFile, 0, SEEK_SET );
if ((_hread16(hFile,&mz_header,sizeof(mz_header)) != sizeof(mz_header)) ||
(mz_header.e_magic != IMAGE_DOS_SIGNATURE))
return (HMODULE16)11; /* invalid exe */
_llseek16( hFile, mz_header.e_lfanew, SEEK_SET );
if (_hread16( hFile, &ne_header, sizeof(ne_header) ) != sizeof(ne_header))
return (HMODULE16)11; /* invalid exe */
if (ne_header.ne_magic == IMAGE_NT_SIGNATURE) return (HMODULE16)21; /* win32 exe */
if (ne_header.ne_magic != IMAGE_OS2_SIGNATURE) return (HMODULE16)11; /* invalid exe */
if (ne_header.ne_magic == IMAGE_OS2_SIGNATURE_LX) {
MSG("Sorry, this is an OS/2 linear executable (LX) file !\n");
return (HMODULE16)12;
}
/* We now have a valid NE header */
size = sizeof(NE_MODULE) +
/* segment table */
ne_header.n_segment_tab * sizeof(SEGTABLEENTRY) +
/* resource table */
ne_header.rname_tab_offset - ne_header.resource_tab_offset +
/* resident names table */
ne_header.moduleref_tab_offset - ne_header.rname_tab_offset +
/* module ref table */
ne_header.n_mod_ref_tab * sizeof(WORD) +
/* imported names table */
ne_header.entry_tab_offset - ne_header.iname_tab_offset +
/* entry table length */
ne_header.entry_tab_length +
/* loaded file info */
sizeof(OFSTRUCT)-sizeof(ofs->szPathName)+strlen(ofs->szPathName)+1;
hModule = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, size );
if (!hModule) return (HMODULE16)11; /* invalid exe */
FarSetOwner( hModule, hModule );
pModule = (NE_MODULE *)GlobalLock16( hModule );
memcpy( pModule, &ne_header, sizeof(ne_header) );
pModule->count = 0;
pModule->module32 = 0;
pModule->self = hModule;
pModule->self_loading_sel = 0;
pData = (BYTE *)(pModule + 1);
/* Clear internal Wine flags in case they are set in the EXE file */
pModule->flags &= ~(NE_FFLAGS_BUILTIN | NE_FFLAGS_WIN32);
/* Read the fast-load area */
if (ne_header.additional_flags & NE_AFLAGS_FASTLOAD)
{
fastload_offset=ne_header.fastload_offset<<ne_header.align_shift_count;
fastload_length=ne_header.fastload_length<<ne_header.align_shift_count;
TRACE(module, "Using fast-load area offset=%x len=%d\n",
fastload_offset, fastload_length );
if ((fastload = HeapAlloc( SystemHeap, 0, fastload_length )) != NULL)
{
_llseek16( hFile, fastload_offset, SEEK_SET);
if (_hread16(hFile, fastload, fastload_length) != fastload_length)
{
HeapFree( SystemHeap, 0, fastload );
WARN( module, "Error reading fast-load area!\n");
fastload = NULL;
}
}
}
/* Get the segment table */
pModule->seg_table = (int)pData - (int)pModule;
buffer = HeapAlloc( SystemHeap, 0, ne_header.n_segment_tab *
sizeof(struct ne_segment_table_entry_s));
if (buffer)
{
int i;
struct ne_segment_table_entry_s *pSeg;
if (!READ( mz_header.e_lfanew + ne_header.segment_tab_offset,
ne_header.n_segment_tab * sizeof(struct ne_segment_table_entry_s),
buffer ))
{
HeapFree( SystemHeap, 0, buffer );
if (fastload) HeapFree( SystemHeap, 0, fastload );
GlobalFree16( hModule );
return (HMODULE16)11; /* invalid exe */
}
pSeg = (struct ne_segment_table_entry_s *)buffer;
for (i = ne_header.n_segment_tab; i > 0; i--, pSeg++)
{
memcpy( pData, pSeg, sizeof(*pSeg) );
pData += sizeof(SEGTABLEENTRY);
}
HeapFree( SystemHeap, 0, buffer );
}
else
{
if (fastload) HeapFree( SystemHeap, 0, fastload );
GlobalFree16( hModule );
return (HMODULE16)11; /* invalid exe */
}
/* Get the resource table */
if (ne_header.resource_tab_offset < ne_header.rname_tab_offset)
{
pModule->res_table = (int)pData - (int)pModule;
if (!READ(mz_header.e_lfanew + ne_header.resource_tab_offset,
ne_header.rname_tab_offset - ne_header.resource_tab_offset,
pData )) return (HMODULE16)11; /* invalid exe */
pData += ne_header.rname_tab_offset - ne_header.resource_tab_offset;
NE_InitResourceHandler( hModule );
}
else pModule->res_table = 0; /* No resource table */
/* Get the resident names table */
pModule->name_table = (int)pData - (int)pModule;
if (!READ( mz_header.e_lfanew + ne_header.rname_tab_offset,
ne_header.moduleref_tab_offset - ne_header.rname_tab_offset,
pData ))
{
if (fastload) HeapFree( SystemHeap, 0, fastload );
GlobalFree16( hModule );
return (HMODULE16)11; /* invalid exe */
}
pData += ne_header.moduleref_tab_offset - ne_header.rname_tab_offset;
/* Get the module references table */
if (ne_header.n_mod_ref_tab > 0)
{
pModule->modref_table = (int)pData - (int)pModule;
if (!READ( mz_header.e_lfanew + ne_header.moduleref_tab_offset,
ne_header.n_mod_ref_tab * sizeof(WORD),
pData ))
{
if (fastload) HeapFree( SystemHeap, 0, fastload );
GlobalFree16( hModule );
return (HMODULE16)11; /* invalid exe */
}
pData += ne_header.n_mod_ref_tab * sizeof(WORD);
}
else pModule->modref_table = 0; /* No module references */
/* Get the imported names table */
pModule->import_table = (int)pData - (int)pModule;
if (!READ( mz_header.e_lfanew + ne_header.iname_tab_offset,
ne_header.entry_tab_offset - ne_header.iname_tab_offset,
pData ))
{
if (fastload) HeapFree( SystemHeap, 0, fastload );
GlobalFree16( hModule );
return (HMODULE16)11; /* invalid exe */
}
pData += ne_header.entry_tab_offset - ne_header.iname_tab_offset;
/* Get the entry table */
pModule->entry_table = (int)pData - (int)pModule;
if (!READ( mz_header.e_lfanew + ne_header.entry_tab_offset,
ne_header.entry_tab_length,
pData ))
{
if (fastload) HeapFree( SystemHeap, 0, fastload );
GlobalFree16( hModule );
return (HMODULE16)11; /* invalid exe */
}
pData += ne_header.entry_tab_length;
/* Store the filename information */
pModule->fileinfo = (int)pData - (int)pModule;
size = sizeof(OFSTRUCT)-sizeof(ofs->szPathName)+strlen(ofs->szPathName)+1;
memcpy( pData, ofs, size );
((OFSTRUCT *)pData)->cBytes = size - 1;
pData += size;
/* Free the fast-load area */
#undef READ
if (fastload) HeapFree( SystemHeap, 0, fastload );
/* Get the non-resident names table */
if (ne_header.nrname_tab_length)
{
pModule->nrname_handle = GLOBAL_Alloc( 0, ne_header.nrname_tab_length,
hModule, FALSE, FALSE, FALSE );
if (!pModule->nrname_handle)
{
GlobalFree16( hModule );
return (HMODULE16)11; /* invalid exe */
}
buffer = GlobalLock16( pModule->nrname_handle );
_llseek16( hFile, ne_header.nrname_tab_offset, SEEK_SET );
if (_hread16( hFile, buffer, ne_header.nrname_tab_length )
!= ne_header.nrname_tab_length)
{
GlobalFree16( pModule->nrname_handle );
GlobalFree16( hModule );
return (HMODULE16)11; /* invalid exe */
}
}
else pModule->nrname_handle = 0;
/* Allocate a segment for the implicitly-loaded DLLs */
if (pModule->modref_count)
{
pModule->dlls_to_init = GLOBAL_Alloc(GMEM_ZEROINIT,
(pModule->modref_count+1)*sizeof(HMODULE16),
hModule, FALSE, FALSE, FALSE );
if (!pModule->dlls_to_init)
{
if (pModule->nrname_handle) GlobalFree16( pModule->nrname_handle );
GlobalFree16( hModule );
return (HMODULE16)11; /* invalid exe */
}
}
else pModule->dlls_to_init = 0;
NE_RegisterModule( pModule );
if (fnSNOOP16_RegisterDLL)
fnSNOOP16_RegisterDLL(pModule,ofs->szPathName);
return hModule;
}
/***********************************************************************
* NE_LoadDLLs
*
* Load all DLLs implicitly linked to a module.
*/
static BOOL32 NE_LoadDLLs( NE_MODULE *pModule )
{
int i;
WORD *pModRef = (WORD *)((char *)pModule + pModule->modref_table);
WORD *pDLLs = (WORD *)GlobalLock16( pModule->dlls_to_init );
for (i = 0; i < pModule->modref_count; i++, pModRef++)
{
char buffer[260];
BYTE *pstr = (BYTE *)pModule + pModule->import_table + *pModRef;
memcpy( buffer, pstr + 1, *pstr );
strcpy( buffer + *pstr, ".dll" );
TRACE(module, "Loading '%s'\n", buffer );
if (!(*pModRef = GetModuleHandle16( buffer )))
{
/* If the DLL is not loaded yet, load it and store */
/* its handle in the list of DLLs to initialize. */
HMODULE16 hDLL;
if ((hDLL = NE_LoadModule( buffer, NULL, TRUE, TRUE )) == 2)
{
/* file not found */
char *p;
/* Try with prepending the path of the current module */
GetModuleFileName16( pModule->self, buffer, sizeof(buffer) );
if (!(p = strrchr( buffer, '\\' ))) p = buffer;
memcpy( p + 1, pstr + 1, *pstr );
strcpy( p + 1 + *pstr, ".dll" );
hDLL = NE_LoadModule( buffer, NULL, TRUE, TRUE );
}
if (hDLL < 32)
{
/* FIXME: cleanup what was done */
MSG( "Could not load '%s' required by '%.*s', error=%d\n",
buffer, *((BYTE*)pModule + pModule->name_table),
(char *)pModule + pModule->name_table + 1, hDLL );
return FALSE;
}
*pModRef = GetExePtr( hDLL );
*pDLLs++ = *pModRef;
}
else /* Increment the reference count of the DLL */
{
NE_MODULE *pOldDLL = NE_GetPtr( *pModRef );
if (pOldDLL) pOldDLL->count++;
}
}
return TRUE;
}
/**********************************************************************
* NE_LoadModule
*
* Implementation of LoadModule16().
*/
HINSTANCE16 NE_LoadModule( LPCSTR name, HINSTANCE16 *hPrevInstance,
BOOL32 implicit, BOOL32 lib_only )
{
HMODULE16 hModule;
HINSTANCE16 hInstance;
NE_MODULE *pModule;
HFILE16 hFile;
OFSTRUCT ofs;
/* Check if the module is already loaded */
if ((hModule = GetModuleHandle16( name )) != 0)
{
HINSTANCE16 prev;
pModule = NE_GetPtr( hModule );
if ( pModule->module32 ) return (HINSTANCE16)21;
hInstance = NE_CreateInstance( pModule, &prev, lib_only );
if (hInstance != prev) /* not a library */
NE_LoadSegment( pModule, pModule->dgroup );
pModule->count++;
if (hPrevInstance) *hPrevInstance = prev;
return hInstance;
}
if (hPrevInstance) *hPrevInstance = 0;
/* Try to load the built-in first if not disabled */
if ((hModule = fnBUILTIN_LoadModule( name, FALSE ))) return hModule;
if ((hFile = OpenFile16( name, &ofs, OF_READ )) == HFILE_ERROR16)
{
/* Now try the built-in even if disabled */
if ((hModule = fnBUILTIN_LoadModule( name, TRUE )))
{
MSG( "Could not load Windows DLL '%s', using built-in module.\n",
name );
return hModule;
}
return 2; /* File not found */
}
/* Create the module structure */
hModule = NE_LoadExeHeader( hFile, &ofs );
_lclose16( hFile );
if (hModule < 32) return hModule;
pModule = NE_GetPtr( hModule );
/* Allocate the segments for this module */
if (!NE_CreateSegments( pModule ) ||
!(hInstance = NE_CreateInstance( pModule, NULL, lib_only )))
{
GlobalFreeAll( hModule );
return 8; /* Insufficient memory */
}
/* Load the referenced DLLs */
if (!NE_LoadDLLs( pModule ))
return 2; /* File not found (FIXME: free everything) */
/* Load the segments */
NE_LoadAllSegments( pModule );
/* Fixup the functions prologs */
NE_FixupPrologs( pModule );
/* Make sure the usage count is 1 on the first loading of */
/* the module, even if it contains circular DLL references */
pModule->count = 1;
/* Call initialization rountines for all loaded DLLs. Note that
* when we load implicitly linked DLLs this will be done by InitTask().
*/
if (!implicit && (pModule->flags & NE_FFLAGS_LIBMODULE))
NE_InitializeDLLs( hModule );
return hInstance;
}
/***********************************************************************
* LoadLibrary (KERNEL.95)
*/
HINSTANCE16 WINAPI LoadLibrary16( LPCSTR libname )
{
HINSTANCE16 handle;
LPCSTR p;
char *new_name;
TRACE(module, "(%08x) %s\n", (int)libname, libname);
/* Check for an extension */
if ((p = strrchr( libname, '.')) && !strchr( p, '/' ) && !strchr( p, '\\'))
{
/* An extension is present -> use the name as is */
return NE_LoadModule( libname, NULL, FALSE, TRUE );
}
/* Now append .dll before loading */
if (!(new_name = HeapAlloc( GetProcessHeap(), 0, strlen(libname) + 4 )))
return 0;
strcpy( new_name, libname );
strcat( new_name, ".dll" );
handle = NE_LoadModule( new_name, NULL, FALSE, TRUE );
HeapFree( GetProcessHeap(), 0, new_name );
return handle;
}
/**********************************************************************
* MODULE_CallWEP
*
* Call a DLL's WEP, allowing it to shut down.
* FIXME: we always pass the WEP WEP_FREE_DLL, never WEP_SYSTEM_EXIT
*/
static BOOL16 MODULE_CallWEP( HMODULE16 hModule )
{
FARPROC16 WEP = (FARPROC16)0;
WORD ordinal = NE_GetOrdinal( hModule, "WEP" );
if (ordinal) WEP = NE_GetEntryPoint( hModule, ordinal );
if (!WEP)
{
WARN(module, "module %04x doesn't have a WEP\n", hModule );
return FALSE;
}
return Callbacks->CallWindowsExitProc( WEP, WEP_FREE_DLL );
}
/**********************************************************************
* NE_FreeModule
*
* Implementation of FreeModule16().
*/
static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL32 call_wep )
{
HMODULE16 *hPrevModule;
NE_MODULE *pModule;
HMODULE16 *pModRef;
int i;
if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
hModule = pModule->self;
TRACE( module, "%04x count %d\n", hModule, pModule->count );
if (((INT16)(--pModule->count)) > 0 ) return TRUE;
else pModule->count = 0;
if (pModule->flags & NE_FFLAGS_BUILTIN)
return FALSE; /* Can't free built-in module */
if (call_wep)
{
if (pModule->flags & NE_FFLAGS_LIBMODULE)
{
TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
MODULE_CallWEP( hModule );
/* Free the objects owned by the DLL module */
if (pTask && pTask->userhandler)
pTask->userhandler( hModule, USIG_DLL_UNLOAD, 0,
pTask->hInstance, pTask->hQueue );
}
else
call_wep = FALSE; /* We are freeing a task -> no more WEPs */
}
/* Clear magic number just in case */
pModule->magic = pModule->self = 0;
/* Remove it from the linked list */
hPrevModule = &hFirstModule;
while (*hPrevModule && (*hPrevModule != hModule))
{
hPrevModule = &(NE_GetPtr( *hPrevModule ))->next;
}
if (*hPrevModule) *hPrevModule = pModule->next;
/* Free the referenced modules */
pModRef = (HMODULE16*)NE_MODULE_TABLE( pModule );
for (i = 0; i < pModule->modref_count; i++, pModRef++)
{
NE_FreeModule( *pModRef, call_wep );
}
/* Free the module storage */
GlobalFreeAll( hModule );
/* Remove module from cache */
if (pCachedModule == pModule) pCachedModule = NULL;
return TRUE;
}
/**********************************************************************
* FreeModule16 (KERNEL.46)
*/
BOOL16 WINAPI FreeModule16( HMODULE16 hModule )
{
return NE_FreeModule( hModule, TRUE );
}
/***********************************************************************
* FreeLibrary16 (KERNEL.96)
*/
void WINAPI FreeLibrary16( HINSTANCE16 handle )
{
TRACE(module,"%04x\n", handle );
FreeModule16( handle );
}
/**********************************************************************
* GetModuleName (KERNEL.27)
*/
BOOL16 WINAPI GetModuleName( HINSTANCE16 hinst, LPSTR buf, INT16 count )
{
NE_MODULE *pModule;
BYTE *p;
if (!(pModule = NE_GetPtr( hinst ))) return FALSE;
p = (BYTE *)pModule + pModule->name_table;
if (count > *p) count = *p + 1;
if (count > 0)
{
memcpy( buf, p + 1, count - 1 );
buf[count-1] = '\0';
}
return TRUE;
}
/**********************************************************************
* GetModuleUsage (KERNEL.48)
*/
INT16 WINAPI GetModuleUsage( HINSTANCE16 hModule )
{
NE_MODULE *pModule = NE_GetPtr( hModule );
return pModule ? pModule->count : 0;
}
/**********************************************************************
* GetExpWinVer (KERNEL.167)
*/
WORD WINAPI GetExpWinVer( HMODULE16 hModule )
{
NE_MODULE *pModule = NE_GetPtr( hModule );
return pModule ? pModule->expected_version : 0;
}
/**********************************************************************
* GetModuleFileName16 (KERNEL.49)
*/
INT16 WINAPI GetModuleFileName16( HINSTANCE16 hModule, LPSTR lpFileName,
INT16 nSize )
{
NE_MODULE *pModule;
if (!hModule) hModule = GetCurrentTask();
if (!(pModule = NE_GetPtr( hModule ))) return 0;
lstrcpyn32A( lpFileName, NE_MODULE_NAME(pModule), nSize );
TRACE(module, "%s\n", lpFileName );
return strlen(lpFileName);
}
/**********************************************************************
* GetModuleHandle16 (KERNEL.47)
*
* Find a module from a path name.
*
* RETURNS
* LOWORD:
* the win16 module handle if found
* 0 if not
* HIWORD (undocumented, see "Undocumented Windows", chapter 5):
* Always hFirstModule
*/
DWORD WINAPI WIN16_GetModuleHandle( SEGPTR name )
{
if (HIWORD(name) == 0)
return MAKELONG(GetExePtr( (HINSTANCE16)name), hFirstModule );
return MAKELONG(GetModuleHandle16( PTR_SEG_TO_LIN(name)), hFirstModule );
}
HMODULE16 WINAPI GetModuleHandle16( LPCSTR name )
{
HMODULE16 hModule = hFirstModule;
LPCSTR filename, dotptr, modulepath, modulename;
BYTE len, *name_table;
if (!(filename = strrchr( name, '\\' ))) filename = name;
else filename++;
if ((dotptr = strrchr( filename, '.' )) != NULL)
len = (BYTE)(dotptr - filename);
else len = strlen( filename );
while (hModule)
{
NE_MODULE *pModule = NE_GetPtr( hModule );
if (!pModule) break;
modulepath = NE_MODULE_NAME(pModule);
if (!(modulename = strrchr( modulepath, '\\' )))
modulename = modulepath;
else modulename++;
if (!lstrcmpi32A( modulename, filename )) return hModule;
name_table = (BYTE *)pModule + pModule->name_table;
if ((*name_table == len) && !lstrncmpi32A(filename, name_table+1, len))
return hModule;
hModule = pModule->next;
}
return 0;
}
/**********************************************************************
* ModuleFirst (TOOLHELP.59)
*/
BOOL16 WINAPI ModuleFirst( MODULEENTRY *lpme )
{
lpme->wNext = hFirstModule;
return ModuleNext( lpme );
}
/**********************************************************************
* ModuleNext (TOOLHELP.60)
*/
BOOL16 WINAPI ModuleNext( MODULEENTRY *lpme )
{
NE_MODULE *pModule;
char *name;
if (!lpme->wNext) return FALSE;
if (!(pModule = NE_GetPtr( lpme->wNext ))) return FALSE;
name = (char *)pModule + pModule->name_table;
memcpy( lpme->szModule, name + 1, *name );
lpme->szModule[(BYTE)*name] = '\0';
lpme->hModule = lpme->wNext;
lpme->wcUsage = pModule->count;
strncpy( lpme->szExePath, NE_MODULE_NAME(pModule), MAX_PATH );
lpme->szExePath[MAX_PATH] = '\0';
lpme->wNext = pModule->next;
return TRUE;
}
/**********************************************************************
* ModuleFindName (TOOLHELP.61)
*/
BOOL16 WINAPI ModuleFindName( MODULEENTRY *lpme, LPCSTR name )
{
lpme->wNext = GetModuleHandle16( name );
return ModuleNext( lpme );
}
/**********************************************************************
* ModuleFindHandle (TOOLHELP.62)
*/
BOOL16 WINAPI ModuleFindHandle( MODULEENTRY *lpme, HMODULE16 hModule )
{
hModule = GetExePtr( hModule );
lpme->wNext = hModule;
return ModuleNext( lpme );
}
/***************************************************************************
* MapHModuleLS (KERNEL32.520)
*/
HMODULE16 WINAPI MapHModuleLS(HMODULE32 hmod) {
NE_MODULE *pModule;
if (!hmod)
return ((TDB*)GlobalLock16(GetCurrentTask()))->hInstance;
if (!HIWORD(hmod))
return hmod; /* we already have a 16 bit module handle */
pModule = (NE_MODULE*)GlobalLock16(hFirstModule);
while (pModule) {
if (pModule->module32 == hmod)
return pModule->self;
pModule = (NE_MODULE*)GlobalLock16(pModule->next);
}
return 0;
}
/***************************************************************************
* MapHModuleSL (KERNEL32.521)
*/
HMODULE32 WINAPI MapHModuleSL(HMODULE16 hmod) {
NE_MODULE *pModule;
if (!hmod) {
TDB *pTask = (TDB*)GlobalLock16(GetCurrentTask());
hmod = pTask->hInstance;
}
pModule = (NE_MODULE*)GlobalLock16(hmod);
if ( (pModule->magic!=IMAGE_OS2_SIGNATURE) ||
!(pModule->flags & NE_FFLAGS_WIN32)
)
return 0;
return pModule->module32;
}
/***************************************************************************
* MapHInstLS (KERNEL32.516)
*/
REGS_ENTRYPOINT(MapHInstLS) {
EAX_reg(context) = MapHModuleLS(EAX_reg(context));
}
/***************************************************************************
* MapHInstSL (KERNEL32.518)
*/
REGS_ENTRYPOINT(MapHInstSL) {
EAX_reg(context) = MapHModuleSL(EAX_reg(context));
}
/***************************************************************************
* MapHInstLS_PN (KERNEL32.517)
*/
REGS_ENTRYPOINT(MapHInstLS_PN) {
if (EAX_reg(context))
EAX_reg(context) = MapHModuleLS(EAX_reg(context));
}
/***************************************************************************
* MapHInstSL_PN (KERNEL32.519)
*/
REGS_ENTRYPOINT(MapHInstSL_PN) {
if (EAX_reg(context))
EAX_reg(context) = MapHModuleSL(EAX_reg(context));
}
/***************************************************************************
* WIN16_MapHInstLS (KERNEL.472)
*/
VOID WINAPI WIN16_MapHInstLS( CONTEXT *context ) {
EAX_reg(context) = MapHModuleLS(EAX_reg(context));
}
/***************************************************************************
* WIN16_MapHInstSL (KERNEL.473)
*/
VOID WINAPI WIN16_MapHInstSL( CONTEXT *context ) {
EAX_reg(context) = MapHModuleSL(EAX_reg(context));
}