/**********************************************************************
* TASK_GetCodeSegment
*
* Helper function for GetCodeHandle/GetCodeInfo: Retrieve the module
* and logical segment number of a given code segment.
*
* 'proc' either *is* already a pair of module handle and segment number,
* in which case there's nothing to do. Otherwise, it is a pointer to
* a function, and we need to retrieve the code segment. If the pointer
* happens to point to a thunk, we'll retrieve info about the code segment
* where the function pointed to by the thunk resides, not the thunk itself.
*
* FIXME: if 'proc' is a SNOOP16 return stub, we should retrieve info about
* the function the snoop code will return to ...
*
*/
static BOOL TASK_GetCodeSegment( FARPROC16 proc, NE_MODULE **ppModule,
SEGTABLEENTRY **ppSeg, int *pSegNr )
{
NE_MODULE *pModule = NULL;
SEGTABLEENTRY *pSeg = NULL;
int segNr=0;
/* Try pair of module handle / segment number */
pModule = GlobalLock16( HIWORD( proc ) );
if ( pModule && pModule->ne_magic == IMAGE_OS2_SIGNATURE )
{
segNr = LOWORD( proc );
if ( segNr && segNr <= pModule->ne_cseg )
pSeg = NE_SEG_TABLE( pModule ) + segNr-1;
}
/* Try thunk or function */
else
{
BYTE *thunk = MapSL( (SEGPTR)proc );
WORD selector;
if ((thunk[0] == 0xb8) && (thunk[3] == 0xea))
selector = thunk[6] + (thunk[7] << 8);
else
selector = HIWORD( proc );
pModule = NE_GetPtr( GlobalHandle16( selector ) );
pSeg = pModule? NE_SEG_TABLE( pModule ) : NULL;
if ( pModule )
for ( segNr = 1; segNr <= pModule->ne_cseg; segNr++, pSeg++ )
if ( GlobalHandleToSel16(pSeg->hSeg) == selector )
break;
if ( pModule && segNr > pModule->ne_cseg )
pSeg = NULL;
}
/* Abort if segment not found */
if ( !pModule || !pSeg )
return FALSE;
/* Return segment data */
if ( ppModule ) *ppModule = pModule;
if ( ppSeg ) *ppSeg = pSeg;
if ( pSegNr ) *pSegNr = segNr;
return TRUE;
}
/***********************************************************************
* NE_CreateSegment
*/
BOOL NE_CreateSegment( NE_MODULE *pModule, int segnum )
{
SEGTABLEENTRY *pSeg = NE_SEG_TABLE( pModule ) + segnum - 1;
int minsize;
unsigned char selflags;
assert( !(pModule->ne_flags & NE_FFLAGS_WIN32) );
if ( segnum < 1 || segnum > pModule->ne_cseg )
return FALSE;
if ( (pModule->ne_flags & NE_FFLAGS_SELFLOAD) && segnum != 1 )
return TRUE; /* selfloader allocates segment itself */
if ( (pSeg->flags & NE_SEGFLAGS_ALLOCATED) && segnum != pModule->ne_autodata )
return TRUE; /* all but DGROUP only allocated once */
minsize = pSeg->minsize ? pSeg->minsize : 0x10000;
if ( segnum == SELECTOROF(pModule->ne_sssp) ) minsize += pModule->ne_stack;
if ( segnum == pModule->ne_autodata ) minsize += pModule->ne_heap;
selflags = (pSeg->flags & NE_SEGFLAGS_DATA) ? WINE_LDT_FLAGS_DATA : WINE_LDT_FLAGS_CODE;
if (pSeg->flags & NE_SEGFLAGS_32BIT) selflags |= WINE_LDT_FLAGS_32BIT;
pSeg->hSeg = GLOBAL_Alloc( NE_Ne2MemFlags(pSeg->flags), minsize, pModule->self, selflags );
if (!pSeg->hSeg) return FALSE;
pSeg->flags |= NE_SEGFLAGS_ALLOCATED;
return TRUE;
}
/***********************************************************************
* NE_GetInstance
*/
HINSTANCE16 NE_GetInstance( NE_MODULE *pModule )
{
if ( !pModule->ne_autodata )
return pModule->self;
else
{
SEGTABLEENTRY *pSeg;
pSeg = NE_SEG_TABLE( pModule ) + pModule->ne_autodata - 1;
return pSeg->hSeg;
}
}
/***********************************************************************
* NE_LoadAllSegments
*/
BOOL NE_LoadAllSegments( NE_MODULE *pModule )
{
int i;
SEGTABLEENTRY * pSegTable = NE_SEG_TABLE(pModule);
if (pModule->ne_flags & NE_FFLAGS_SELFLOAD)
{
HFILE16 hFile16;
HGLOBAL16 sel;
/* Handle self-loading modules */
SELFLOADHEADER *selfloadheader;
HMODULE16 mod = GetModuleHandle16("KERNEL");
void *oldstack;
WORD args[2];
TRACE_(module)("%.*s is a self-loading module!\n",
*((BYTE*)pModule + pModule->ne_restab),
(char *)pModule + pModule->ne_restab + 1);
if (!NE_LoadSegment( pModule, 1 )) return FALSE;
selfloadheader = MapSL( MAKESEGPTR(SEL(pSegTable->hSeg), 0) );
selfloadheader->EntryAddrProc = GetProcAddress16(mod,"EntryAddrProc");
selfloadheader->MyAlloc = GetProcAddress16(mod,"MyAlloc");
selfloadheader->SetOwner = GetProcAddress16(mod,"FarSetOwner");
sel = GlobalAlloc16( GMEM_ZEROINIT, 0xFF00 );
pModule->self_loading_sel = SEL(sel);
FarSetOwner16( sel, pModule->self );
oldstack = getWOW32Reserved();
setWOW32Reserved((void *)MAKESEGPTR(pModule->self_loading_sel,
0xff00 - sizeof(STACK16FRAME) ));
hFile16 = NE_OpenFile(pModule);
TRACE_(dll)("CallBootAppProc(hModule=0x%04x,hf=0x%04x)\n",
pModule->self,hFile16);
args[1] = pModule->self;
args[0] = hFile16;
WOWCallback16Ex( (DWORD)selfloadheader->BootApp, WCB16_PASCAL, sizeof(args), args, NULL );
TRACE_(dll)("Return from CallBootAppProc\n");
_lclose16(hFile16);
setWOW32Reserved(oldstack);
for (i = 2; i <= pModule->ne_cseg; i++)
if (!NE_LoadSegment( pModule, i )) return FALSE;
}
else
{
for (i = 1; i <= pModule->ne_cseg; i++)
if (!NE_LoadSegment( pModule, i )) return FALSE;
}
return TRUE;
}
/***********************************************************************
* NE_LoadAllSegments
*/
BOOL NE_LoadAllSegments( NE_MODULE *pModule )
{
int i;
SEGTABLEENTRY * pSegTable = (SEGTABLEENTRY *) NE_SEG_TABLE(pModule);
if (pModule->flags & NE_FFLAGS_SELFLOAD)
{
HANDLE hf;
HFILE16 hFile16;
HGLOBAL16 sel;
/* Handle self-loading modules */
SELFLOADHEADER *selfloadheader;
HMODULE16 mod = GetModuleHandle16("KERNEL");
DWORD oldstack;
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 = MapSL( MAKESEGPTR(SEL(pSegTable->hSeg), 0) );
selfloadheader->EntryAddrProc = GetProcAddress16(mod,"EntryAddrProc");
selfloadheader->MyAlloc = GetProcAddress16(mod,"MyAlloc");
selfloadheader->SetOwner = GetProcAddress16(mod,"FarSetOwner");
sel = GlobalAlloc16( GMEM_ZEROINIT, 0xFF00 );
pModule->self_loading_sel = SEL(sel);
FarSetOwner16( sel, pModule->self );
oldstack = NtCurrentTeb()->WOW32Reserved;
NtCurrentTeb()->WOW32Reserved = MAKESEGPTR(pModule->self_loading_sel,
0xff00 - sizeof(STACK16FRAME) );
DuplicateHandle( GetCurrentProcess(), NE_OpenFile(pModule),
GetCurrentProcess(), &hf, 0, FALSE, DUPLICATE_SAME_ACCESS );
hFile16 = Win32HandleToDosFileHandle( hf );
TRACE_(dll)("CallBootAppProc(hModule=0x%04x,hf=0x%04x)\n",
pModule->self,hFile16);
NE_CallTo16_word_ww(selfloadheader->BootApp, pModule->self,hFile16);
TRACE_(dll)("Return from CallBootAppProc\n");
_lclose16(hFile16);
NtCurrentTeb()->WOW32Reserved = 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_InitDLL
*
* Call the DLL initialization code
*/
static BOOL NE_InitDLL( NE_MODULE *pModule )
{
SEGTABLEENTRY *pSegTable;
WORD hInst, ds, heap;
CONTEXT context;
pSegTable = NE_SEG_TABLE( pModule );
if (!(pModule->ne_flags & NE_FFLAGS_LIBMODULE) ||
(pModule->ne_flags & NE_FFLAGS_WIN32)) return TRUE; /*not a library*/
/* Call USER signal handler for Win3.1 compatibility. */
NE_CallUserSignalProc( pModule->self, USIG16_DLL_LOAD );
if (!SELECTOROF(pModule->ne_csip)) 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 );
context.Ecx = heap;
context.Edi = hInst;
context.SegDs = ds;
context.SegEs = ds; /* who knows ... */
context.SegFs = wine_get_fs();
context.SegGs = wine_get_gs();
context.SegCs = SEL(pSegTable[SELECTOROF(pModule->ne_csip)-1].hSeg);
context.Eip = OFFSETOF(pModule->ne_csip);
context.Ebp = OFFSETOF(getWOW32Reserved()) + FIELD_OFFSET(STACK16FRAME,bp);
pModule->ne_csip = 0; /* Don't initialize it twice */
TRACE_(dll)("Calling LibMain for %.*s, cs:ip=%04x:%04x ds=%04x di=%04x cx=%04x\n",
*((BYTE*)pModule + pModule->ne_restab),
(char *)pModule + pModule->ne_restab + 1,
context.SegCs, context.Eip, context.SegDs,
LOWORD(context.Edi), LOWORD(context.Ecx) );
WOWCallback16Ex( 0, WCB16_REGS, 0, NULL, (DWORD *)&context );
return TRUE;
}
/***********************************************************************
* NE_InitDLL
*
* Call the DLL initialization code
*/
static BOOL NE_InitDLL( NE_MODULE *pModule )
{
SEGTABLEENTRY *pSegTable;
WORD hInst, ds, heap;
CONTEXT86 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 for Win3.1 compatibility. */
TASK_CallTaskSignalProc( USIG16_DLL_LOAD, pModule->self );
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 );
context.Ecx = heap;
context.Edi = hInst;
context.SegDs = ds;
context.SegEs = ds; /* who knows ... */
context.SegCs = SEL(pSegTable[pModule->cs-1].hSeg);
context.Eip = pModule->ip;
context.Ebp = OFFSETOF(NtCurrentTeb()->WOW32Reserved) + (WORD)&((STACK16FRAME*)0)->bp;
pModule->cs = 0; /* Don't initialize it twice */
TRACE_(dll)("Calling LibMain, cs:ip=%04lx:%04lx ds=%04lx di=%04x cx=%04x\n",
context.SegCs, context.Eip, context.SegDs,
LOWORD(context.Edi), LOWORD(context.Ecx) );
wine_call_to_16_regs_short( &context, 0 );
return TRUE;
}
/***********************************************************************
* PatchCodeHandle (KERNEL.110)
*
* Needed for self-loading modules.
*/
DWORD WINAPI PatchCodeHandle16(HANDLE16 hSeg)
{
WORD segnum;
WORD sel = SEL(hSeg);
NE_MODULE *pModule = NE_GetPtr(FarGetOwner16(sel));
SEGTABLEENTRY *pSegTable = NE_SEG_TABLE(pModule);
TRACE_(module)("(%04x);\n", hSeg);
/* find the segment number of the module that belongs to hSeg */
for (segnum = 1; segnum <= pModule->ne_cseg; segnum++)
{
if (SEL(pSegTable[segnum-1].hSeg) == sel)
{
NE_FixupSegmentPrologs(pModule, segnum);
break;
}
}
return MAKELONG(hSeg, sel);
}
/***********************************************************************
* NE_GetDLLInitParams
*/
static VOID NE_GetDLLInitParams( NE_MODULE *pModule,
WORD *hInst, WORD *ds, WORD *heap )
{
SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
if (!(pModule->ne_flags & NE_FFLAGS_SINGLEDATA))
{
if (pModule->ne_flags & NE_FFLAGS_MULTIPLEDATA || pModule->ne_autodata)
{
/* 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->ne_autodata) {
*ds = SEL(pSegTable[pModule->ne_autodata-1].hSeg);
*heap = pModule->ne_heap;
}
else /* hmm, DLL has no dgroup,
but why has it NE_FFLAGS_SINGLEDATA set ?
Buggy DLL compiler ? */
{
*ds = 0;
*heap = 0;
}
}
*hInst = *ds ? GlobalHandle16(*ds) : pModule->self;
}
/***********************************************************************
* NE_FixupSegmentPrologs
*
* Fixup exported functions prologs of one segment
*/
static void NE_FixupSegmentPrologs(NE_MODULE *pModule, WORD segnum)
{
SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
ET_BUNDLE *bundle;
ET_ENTRY *entry;
WORD dgroup, num_entries, sel = SEL(pSegTable[segnum-1].hSeg);
BYTE *pSeg, *pFunc;
TRACE("(%d);\n", segnum);
if (pSegTable[segnum-1].flags & NE_SEGFLAGS_DATA)
{
pSegTable[segnum-1].flags |= NE_SEGFLAGS_LOADED;
return;
}
if (!pModule->ne_autodata) return;
if (!pSegTable[pModule->ne_autodata-1].hSeg) return;
dgroup = SEL(pSegTable[pModule->ne_autodata-1].hSeg);
pSeg = MapSL( MAKESEGPTR(sel, 0) );
bundle = (ET_BUNDLE *)((BYTE *)pModule+pModule->ne_enttab);
do {
TRACE("num_entries: %d, bundle: %p, next: %04x, pSeg: %p\n", bundle->last - bundle->first, bundle, bundle->next, pSeg);
if (!(num_entries = bundle->last - bundle->first))
return;
entry = (ET_ENTRY *)((BYTE *)bundle+6);
while (num_entries--)
{
/*TRACE("entry: %p, entry->segnum: %d, entry->offs: %04x\n", entry, entry->segnum, entry->offs);*/
if (entry->segnum == segnum)
{
pFunc = pSeg+entry->offs;
TRACE("pFunc: %p, *(DWORD *)pFunc: %08x, num_entries: %d\n", pFunc, *(DWORD *)pFunc, num_entries);
if (*(pFunc+2) == 0x90)
{
if (*(WORD *)pFunc == 0x581e) /* push ds, pop ax */
{
TRACE("patch %04x:%04x -> mov ax, ds\n", sel, entry->offs);
*(WORD *)pFunc = 0xd88c; /* mov ax, ds */
}
if (*(WORD *)pFunc == 0xd88c)
{
if ((entry->flags & 2)) /* public data ? */
{
TRACE("patch %04x:%04x -> mov ax, dgroup [%04x]\n", sel, entry->offs, dgroup);
*pFunc = 0xb8; /* mov ax, */
*(WORD *)(pFunc+1) = dgroup;
}
else if ((pModule->ne_flags & NE_FFLAGS_MULTIPLEDATA)
&& (entry->flags & 1)) /* exported ? */
{
TRACE("patch %04x:%04x -> nop, nop\n", sel, entry->offs);
*(WORD *)pFunc = 0x9090; /* nop, nop */
}
}
}
}
entry++;
}
} while ( (bundle->next) && (bundle = ((ET_BUNDLE *)((BYTE *)pModule + bundle->next))) );
}
/***********************************************************************
* NE_LoadSegment
*/
BOOL NE_LoadSegment( NE_MODULE *pModule, WORD segnum )
{
WORD count;
DWORD pos;
const struct relocation_entry_s *rep;
int size;
SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
SEGTABLEENTRY *pSeg = pSegTable + segnum - 1;
if (pSeg->flags & NE_SEGFLAGS_LOADED)
{
/* self-loader ? -> already loaded it */
if (pModule->ne_flags & NE_FFLAGS_SELFLOAD)
return TRUE;
/* leave, except for DGROUP, as this may be the second instance */
if (segnum != pModule->ne_autodata)
return TRUE;
}
if (!pSeg->filepos) return TRUE; /* No file image, just return */
TRACE_(module)("Loading segment %d, hSeg=%04x, flags=%04x\n",
segnum, pSeg->hSeg, pSeg->flags );
pos = pSeg->filepos << pModule->ne_align;
if (pSeg->size) size = pSeg->size;
else size = pSeg->minsize ? pSeg->minsize : 0x10000;
if (pModule->ne_flags & NE_FFLAGS_SELFLOAD && segnum > 1)
{
/* Implement self-loading segments */
SELFLOADHEADER *selfloadheader;
void *oldstack;
HFILE16 hFile16;
WORD args[3];
DWORD ret;
selfloadheader = MapSL( MAKESEGPTR(SEL(pSegTable->hSeg),0) );
oldstack = getWOW32Reserved();
setWOW32Reserved((void *)MAKESEGPTR(pModule->self_loading_sel,
0xff00 - sizeof(STACK16FRAME)));
hFile16 = NE_OpenFile( pModule );
TRACE_(dll)("Call LoadAppSegProc(hmodule=0x%04x,hf=%x,segnum=%d)\n",
pModule->self,hFile16,segnum );
args[2] = pModule->self;
args[1] = hFile16;
args[0] = segnum;
WOWCallback16Ex( (DWORD)selfloadheader->LoadAppSeg, WCB16_PASCAL, sizeof(args), args, &ret );
pSeg->hSeg = LOWORD(ret);
TRACE_(dll)("Ret LoadAppSegProc: hSeg=0x%04x\n", pSeg->hSeg);
_lclose16( hFile16 );
setWOW32Reserved(oldstack);
pSeg->flags |= NE_SEGFLAGS_LOADED;
return TRUE;
}
else if (!(pSeg->flags & NE_SEGFLAGS_ITERATED))
{
void *mem = GlobalLock16(pSeg->hSeg);
if (!NE_READ_DATA( pModule, mem, pos, size ))
return FALSE;
pos += 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.
*/
const char *buff = NE_GET_DATA( pModule, pos, size );
const char* curr = buff;
char *mem = GlobalLock16(pSeg->hSeg);
pos += size;
if (buff == NULL) return FALSE;
while(curr < buff + size) {
unsigned int rept = ((const short *)curr)[0];
unsigned int len = ((const short *)curr)[1];
curr += 2*sizeof(short);
while (rept--)
{
memcpy( mem, curr, len );
mem += len;
}
curr += len;
}
}
pSeg->flags |= NE_SEGFLAGS_LOADED;
/* Perform exported function prolog fixups */
NE_FixupSegmentPrologs( pModule, segnum );
if (!(pSeg->flags & NE_SEGFLAGS_RELOC_DATA))
return TRUE; /* No relocation data, we are done */
if (!NE_READ_DATA( pModule, &count, pos, sizeof(count) ) || !count) return TRUE;
pos += sizeof(count);
TRACE("Fixups for %.*s, segment %d, hSeg %04x\n",
*((BYTE *)pModule + pModule->ne_restab),
(char *)pModule + pModule->ne_restab + 1,
segnum, pSeg->hSeg );
if (!(rep = NE_GET_DATA( pModule, pos, count * sizeof(struct relocation_entry_s) )))
return FALSE;
return apply_relocations( pModule, rep, count, segnum );
}
/***********************************************************************
* apply_relocations
*
* Apply relocations to a segment. Helper for NE_LoadSegment.
*/
static inline BOOL apply_relocations( NE_MODULE *pModule, const struct relocation_entry_s *rep,
int count, int segnum )
{
BYTE *func_name;
char buffer[256];
int i, ordinal;
WORD offset, *sp;
HMODULE16 module;
FARPROC16 address = 0;
HMODULE16 *pModuleTable = (HMODULE16 *)((char *)pModule + pModule->ne_modtab);
SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
SEGTABLEENTRY *pSeg = pSegTable + segnum - 1;
/*
* Go through the relocation table one entry at a time.
*/
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 */
int additive = rep->relocation_type & NE_RELFLAG_ADDITIVE;
switch (rep->relocation_type & 3)
{
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->ne_restab),
*((BYTE *)pModule + pModule->ne_restab),
(char *)pModule + pModule->ne_restab + 1 );
else
{
ERR("No implementation for %.*s.%d, setting to 0xdeadbeef\n",
*((BYTE *)pTarget + pTarget->ne_restab),
(char *)pTarget + pTarget->ne_restab + 1,
ordinal );
address = (FARPROC16)0xdeadbeef;
}
}
if (TRACE_ON(fixup))
{
NE_MODULE *pTarget = NE_GetPtr( module );
TRACE("%d: %.*s.%d=%04x:%04x %s\n", i + 1,
*((BYTE *)pTarget + pTarget->ne_restab),
(char *)pTarget + pTarget->ne_restab + 1,
ordinal, HIWORD(address), LOWORD(address),
NE_GetRelocAddrName( rep->address_type, additive ) );
}
break;
case NE_RELTYPE_NAME:
module = pModuleTable[rep->target1-1];
func_name = (BYTE *)pModule + pModule->ne_imptab + rep->target2;
memcpy( buffer, func_name+1, *func_name );
buffer[*func_name] = '\0';
ordinal = NE_GetOrdinal( module, buffer );
address = NE_GetEntryPoint( module, ordinal );
if (ERR_ON(fixup) && !address)
{
NE_MODULE *pTarget = NE_GetPtr( module );
ERR("No implementation for %.*s.%s, setting to 0xdeadbeef\n",
*((BYTE *)pTarget + pTarget->ne_restab),
(char *)pTarget + pTarget->ne_restab + 1, buffer );
}
if (!address) address = (FARPROC16) 0xdeadbeef;
if (TRACE_ON(fixup))
{
NE_MODULE *pTarget = NE_GetPtr( module );
TRACE("%d: %.*s.%s=%04x:%04x %s\n", i + 1,
*((BYTE *)pTarget + pTarget->ne_restab),
(char *)pTarget + pTarget->ne_restab + 1,
buffer, 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)MAKESEGPTR( SEL(pSegTable[rep->target1-1].hSeg), rep->target2 );
}
TRACE("%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("%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];
GetModuleName16( pModule->self, module, sizeof(module) );
ERR("WARNING: module %s: unknown reloc addr type = 0x%02x. Please report.\n",
module, rep->address_type );
}
if (additive)
{
sp = MapSL( MAKESEGPTR( SEL(pSeg->hSeg), offset ) );
TRACE(" %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("Additive selector to %04x.Please report\n",*sp);
else
*sp = HIWORD(address);
break;
default:
goto unknown;
}
}
else /* non-additive fixup */
{
do
{
WORD next_offset;
sp = MapSL( MAKESEGPTR( SEL(pSeg->hSeg), offset ) );
next_offset = *sp;
TRACE(" %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->hSeg)) break;
offset = next_offset;
} while (offset != 0xffff);
}
}
return TRUE;
unknown:
WARN("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);
return FALSE;
}
/***********************************************************************
* NE_LoadSegment
*/
BOOL NE_LoadSegment( NE_MODULE *pModule, WORD segnum )
{
SEGTABLEENTRY *pSegTable, *pSeg;
WORD *pModuleTable;
WORD count, i, offset, next_offset;
HMODULE16 module;
FARPROC16 address = 0;
HFILE hf;
DWORD res;
struct relocation_entry_s *rep, *reloc_entries;
char *func_name;
int size;
char* mem;
char buffer[256];
int ordinal, additive;
unsigned short *sp;
pSegTable = NE_SEG_TABLE( pModule );
pSeg = pSegTable + segnum - 1;
if (pSeg->flags & NE_SEGFLAGS_LOADED)
{
/* self-loader ? -> already loaded it */
if (pModule->flags & NE_FFLAGS_SELFLOAD)
return TRUE;
/* leave, except for DGROUP, as this may be the second instance */
if (segnum != pModule->dgroup)
return TRUE;
}
if (!pSeg->filepos) return TRUE; /* No file image, just return */
pModuleTable = NE_MODULE_TABLE( pModule );
hf = NE_OpenFile( pModule );
TRACE_(module)("Loading segment %d, hSeg=%04x, flags=%04x\n",
segnum, pSeg->hSeg, pSeg->flags );
SetFilePointer( hf, pSeg->filepos << pModule->alignment, NULL, SEEK_SET );
if (pSeg->size) size = pSeg->size;
else size = pSeg->minsize ? pSeg->minsize : 0x10000;
mem = GlobalLock16(pSeg->hSeg);
if (pModule->flags & NE_FFLAGS_SELFLOAD && segnum > 1)
{
/* Implement self-loading segments */
SELFLOADHEADER *selfloadheader;
DWORD oldstack;
HANDLE hFile32;
HFILE16 hFile16;
selfloadheader = MapSL( MAKESEGPTR(SEL(pSegTable->hSeg),0) );
oldstack = NtCurrentTeb()->WOW32Reserved;
NtCurrentTeb()->WOW32Reserved = MAKESEGPTR(pModule->self_loading_sel,
0xff00 - sizeof(STACK16FRAME));
TRACE_(dll)("CallLoadAppSegProc(hmodule=0x%04x,hf=0x%04x,segnum=%d\n",
pModule->self,hf,segnum );
DuplicateHandle( GetCurrentProcess(), hf, GetCurrentProcess(), &hFile32,
0, FALSE, DUPLICATE_SAME_ACCESS );
hFile16 = Win32HandleToDosFileHandle( hFile32 );
pSeg->hSeg = NE_CallTo16_word_www( selfloadheader->LoadAppSeg,
pModule->self, hFile16, segnum );
TRACE_(dll)("Ret CallLoadAppSegProc: hSeg = 0x%04x\n", pSeg->hSeg);
_lclose16( hFile16 );
NtCurrentTeb()->WOW32Reserved = oldstack;
}
else if (!(pSeg->flags & NE_SEGFLAGS_ITERATED))
ReadFile(hf, mem, size, &res, NULL);
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. [email protected]
*/
char* buff = HeapAlloc(GetProcessHeap(), 0, size);
char* curr = buff;
if(buff == NULL) {
WARN_(dll)("Memory exausted!");
return FALSE;
}
ReadFile(hf, buff, size, &res, NULL);
while(curr < buff + size) {
unsigned int rept = *((short*) curr);
curr = (char *)(((short*) curr) + 1);
unsigned int len = *((short*) curr);
curr = (char *)(((short*) curr) + 1);
for(; rept > 0; rept--) {
char* bytes = curr;
unsigned int byte;
for(byte = 0; byte < len; byte++)
*mem++ = *bytes++;
}
curr += len;
}
HeapFree(GetProcessHeap(), 0, buff);
}
pSeg->flags |= NE_SEGFLAGS_LOADED;
/* Perform exported function prolog fixups */
NE_FixupSegmentPrologs( pModule, segnum );
if (!(pSeg->flags & NE_SEGFLAGS_RELOC_DATA))
return TRUE; /* No relocation data, we are done */
ReadFile(hf, &count, sizeof(count), &res, NULL);
if (!count) return TRUE;
TRACE_(fixup)("Fixups for %.*s, segment %d, hSeg %04x\n",
*((BYTE *)pModule + pModule->name_table),
(char *)pModule + pModule->name_table + 1,
segnum, pSeg->hSeg );
TRACE_(segment)("Fixups for %.*s, segment %d, hSeg %04x\n",
*((BYTE *)pModule + pModule->name_table),
(char *)pModule + pModule->name_table + 1,
segnum, pSeg->hSeg );
reloc_entries = (struct relocation_entry_s *)HeapAlloc(GetProcessHeap(), 0, count * sizeof(struct relocation_entry_s));
if(reloc_entries == NULL) {
WARN_(fixup)("Not enough memory for relocation entries!");
return FALSE;
}
if (!ReadFile( hf, reloc_entries, count * sizeof(struct relocation_entry_s), &res, NULL) ||
(res != 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
{
ERR_(fixup)("No implementation for %.*s.%d, setting to 0xdeadbeef\n",
*((BYTE *)pTarget + pTarget->name_table),
(char *)pTarget + pTarget->name_table + 1,
ordinal );
address = (FARPROC16)0xdeadbeef;
}
}
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[(BYTE)*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)("No implementation for %.*s.%s, setting to 0xdeadbeef\n",
*((BYTE *)pTarget + pTarget->name_table),
(char *)pTarget + pTarget->name_table + 1, func_name );
}
if (!address) address = (FARPROC16) 0xdeadbeef;
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)MAKESEGPTR( SEL(pSegTable[rep->target1-1].hSeg), 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];
GetModuleName16( 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 = MapSL( MAKESEGPTR( SEL(pSeg->hSeg), 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 = MapSL( MAKESEGPTR( SEL(pSeg->hSeg), 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->hSeg)) break;
offset = next_offset;
} while (offset != 0xffff);
}
}
HeapFree(GetProcessHeap(), 0, 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);
HeapFree(GetProcessHeap(), 0, reloc_entries);
return FALSE;
}
