/*
 * Module definitions
 *
 * Copyright 1995 Alexandre Julliard
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef __WINE_MODULE_H
#define __WINE_MODULE_H

#include <stdarg.h>
#include <windef.h>
#include <winbase.h>
#include <winreg.h>
#include <wine/windef16.h>
#include <wine/winbase16.h>
#include <winternl.h>

  /* In-memory module structure. See 'Windows Internals' p. 219 */
typedef struct _NE_MODULE
{
    WORD    magic;            /* 00 'NE' signature */
    WORD    count;            /* 02 Usage count */
    WORD    entry_table;      /* 04 Near ptr to entry table */
    HMODULE16  next;          /* 06 Selector to next module */
    WORD    dgroup_entry;     /* 08 Near ptr to segment entry for DGROUP */
    WORD    fileinfo;         /* 0a Near ptr to file info (OFSTRUCT) */
    WORD    flags;            /* 0c Module flags */
    WORD    dgroup;           /* 0e Logical segment for DGROUP */
    WORD    heap_size;        /* 10 Initial heap size */
    WORD    stack_size;       /* 12 Initial stack size */
    WORD    ip;               /* 14 Initial ip */
    WORD    cs;               /* 16 Initial cs (logical segment) */
    WORD    sp;               /* 18 Initial stack pointer */
    WORD    ss;               /* 1a Initial ss (logical segment) */
    WORD    seg_count;        /* 1c Number of segments in segment table */
    WORD    modref_count;     /* 1e Number of module references */
    WORD    nrname_size;      /* 20 Size of non-resident names table */
    WORD    seg_table;        /* 22 Near ptr to segment table */
    WORD    res_table;        /* 24 Near ptr to resource table */
    WORD    name_table;       /* 26 Near ptr to resident names table */
    WORD    modref_table;     /* 28 Near ptr to module reference table */
    WORD    import_table;     /* 2a Near ptr to imported names table */
    DWORD   nrname_fpos;      /* 2c File offset of non-resident names table */
    WORD    moveable_entries; /* 30 Number of moveable entries in entry table*/
    WORD    alignment;        /* 32 Alignment shift count */
    WORD    truetype;         /* 34 Set to 2 if TrueType font */
    BYTE    os_flags;         /* 36 Operating system flags */
    BYTE    misc_flags;       /* 37 Misc. flags */
    HANDLE16   dlls_to_init;  /* 38 List of DLLs to initialize */
    HANDLE16   nrname_handle; /* 3a Handle to non-resident name table */
    WORD    min_swap_area;    /* 3c Min. swap area size */
    WORD    expected_version; /* 3e Expected Windows version */
    /* From here, these are extra fields not present in normal Windows */
    HMODULE  module32;      /* 40 PE module handle for Win32 modules */
    HMODULE16  self;          /* 44 Handle for this module */
    WORD    self_loading_sel; /* 46 Selector used for self-loading apps. */
    LPVOID  hRsrcMap;         /* HRSRC 16->32 map (for 32-bit modules) */
    HANDLE  fd;               /* handle to the binary file */
} NE_MODULE;


typedef struct {
    BYTE type;
    BYTE flags;
    BYTE segnum;
    WORD offs WINE_PACKED;
} ET_ENTRY;

typedef struct {
    WORD first; /* ordinal */
    WORD last; /* ordinal */
    WORD next; /* bundle */
} ET_BUNDLE;


  /* In-memory segment table */
typedef struct
{
    WORD      filepos;   /* Position in file, in sectors */
    WORD      size;      /* Segment size on disk */
    WORD      flags;     /* Segment flags */
    WORD      minsize;   /* Min. size of segment in memory */
    HANDLE16  hSeg;      /* Selector or handle (selector - 1) */
                         /* of segment in memory */
} SEGTABLEENTRY;


  /* THHOOK Kernel Data Structure */
typedef struct _THHOOK
{
    HANDLE16   hGlobalHeap;         /* 00 (handle BURGERMASTER) */
    WORD       pGlobalHeap;         /* 02 (selector BURGERMASTER) */
    HMODULE16  hExeHead;            /* 04 hFirstModule */
    HMODULE16  hExeSweep;           /* 06 (unused) */
    HANDLE16   TopPDB;              /* 08 (handle of KERNEL PDB) */
    HANDLE16   HeadPDB;             /* 0A (first PDB in list) */
    HANDLE16   TopSizePDB;          /* 0C (unused) */
    HTASK16    HeadTDB;             /* 0E hFirstTask */
    HTASK16    CurTDB;              /* 10 hCurrentTask */
    HTASK16    LoadTDB;             /* 12 (unused) */
    HTASK16    LockTDB;             /* 14 hLockedTask */
} THHOOK;

extern THHOOK *pThhook;

/* Resource types */

#define NE_SEG_TABLE(pModule) \
    ((SEGTABLEENTRY *)((char *)(pModule) + (pModule)->seg_table))

#define NE_MODULE_NAME(pModule) \
    (((OFSTRUCT *)((char*)(pModule) + (pModule)->fileinfo))->szPathName)


enum loadorder_type
{
    LOADORDER_INVALID = 0, /* Must be 0 */
    LOADORDER_DLL,         /* Native DLLs */
    LOADORDER_BI,          /* Built-in modules */
    LOADORDER_NTYPES
};

/* return values for MODULE_GetBinaryType */
enum binary_type
{
    BINARY_UNKNOWN,
    BINARY_PE_EXE,
    BINARY_PE_DLL,
    BINARY_WIN16,
    BINARY_OS216,
    BINARY_DOS,
    BINARY_UNIX_EXE,
    BINARY_UNIX_LIB
};

/* module.c */
extern NTSTATUS MODULE_DllThreadAttach( LPVOID lpReserved );
extern enum binary_type MODULE_GetBinaryType( HANDLE hfile );

/* ne_module.c */
extern NE_MODULE *NE_GetPtr( HMODULE16 hModule );
extern WORD NE_GetOrdinal( HMODULE16 hModule, const char *name );
extern FARPROC16 WINAPI NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal );
extern FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop );
extern BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset );
extern HANDLE NE_OpenFile( NE_MODULE *pModule );
extern DWORD NE_StartTask(void);

/* resource16.c */
extern HGLOBAL16 WINAPI NE_DefResourceHandler(HGLOBAL16,HMODULE16,HRSRC16);

/* ne_segment.c */
extern BOOL NE_LoadSegment( NE_MODULE *pModule, WORD segnum );
extern BOOL NE_LoadAllSegments( NE_MODULE *pModule );
extern BOOL NE_CreateSegment( NE_MODULE *pModule, int segnum );
extern BOOL NE_CreateAllSegments( NE_MODULE *pModule );
extern HINSTANCE16 NE_GetInstance( NE_MODULE *pModule );
extern void NE_InitializeDLLs( HMODULE16 hModule );
extern void NE_DllProcessAttach( HMODULE16 hModule );
extern void NE_CallUserSignalProc( HMODULE16 hModule, UINT16 code );

/* task.c */
extern void TASK_CreateMainTask(void);
extern HTASK16 TASK_SpawnTask( NE_MODULE *pModule, WORD cmdShow,
                               LPCSTR cmdline, BYTE len, HANDLE *hThread );
extern void TASK_ExitTask(void);
extern HTASK16 TASK_GetTaskFromThread( DWORD thread );
extern TDB *TASK_GetCurrent(void);
extern void TASK_InstallTHHook( THHOOK *pNewThook );

/* loadorder.c */
extern void MODULE_GetLoadOrderW( enum loadorder_type plo[], const WCHAR *app_name,
                                  const WCHAR *path );

#endif  /* __WINE_MODULE_H */