dlls/kernel/kernel16_private.h

   1 /*
   2  * Kernel 16-bit private definitions
   3  *
   4  * Copyright 1995 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #ifndef __WINE_KERNEL16_PRIVATE_H
  22 #define __WINE_KERNEL16_PRIVATE_H
  23
  24 #include "wine/winbase16.h"
  25 #include "winreg.h"
  26 #include "winternl.h"
  27
  28 #include "pshpack1.h"
  29
  30 /* In-memory module structure. See 'Windows Internals' p. 219 */
  31 typedef struct _NE_MODULE
  32 {
  33     WORD      ne_magic;         /* 00 'NE' signature */
  34     WORD      count;            /* 02 Usage count (ne_ver/ne_rev on disk) */
  35     WORD      ne_enttab;        /* 04 Near ptr to entry table */
  36     HMODULE16 next;             /* 06 Selector to next module (ne_cbenttab on disk) */
  37     WORD      dgroup_entry;     /* 08 Near ptr to segment entry for DGROUP (ne_crc on disk) */
  38     WORD      fileinfo;         /* 0a Near ptr to file info (OFSTRUCT) (ne_crc on disk) */
  39     WORD      ne_flags;         /* 0c Module flags */
  40     WORD      ne_autodata;      /* 0e Logical segment for DGROUP */
  41     WORD      ne_heap;          /* 10 Initial heap size */
  42     WORD      ne_stack;         /* 12 Initial stack size */
  43     DWORD     ne_csip;          /* 14 Initial cs:ip */
  44     DWORD     ne_sssp;          /* 18 Initial ss:sp */
  45     WORD      ne_cseg;          /* 1c Number of segments in segment table */
  46     WORD      ne_cmod;          /* 1e Number of module references */
  47     WORD      ne_cbnrestab;     /* 20 Size of non-resident names table */
  48     WORD      ne_segtab;        /* 22 Near ptr to segment table */
  49     WORD      ne_rsrctab;       /* 24 Near ptr to resource table */
  50     WORD      ne_restab;        /* 26 Near ptr to resident names table */
  51     WORD      ne_modtab;        /* 28 Near ptr to module reference table */
  52     WORD      ne_imptab;        /* 2a Near ptr to imported names table */
  53     DWORD     ne_nrestab;       /* 2c File offset of non-resident names table */
  54     WORD      ne_cmovent;       /* 30 Number of moveable entries in entry table*/
  55     WORD      ne_align;         /* 32 Alignment shift count */
  56     WORD      ne_cres;          /* 34 # of resource segments */
  57     BYTE      ne_exetyp;        /* 36 Operating system flags */
  58     BYTE      ne_flagsothers;   /* 37 Misc. flags */
  59     HANDLE16  dlls_to_init;     /* 38 List of DLLs to initialize (ne_pretthunks on disk) */
  60     HANDLE16  nrname_handle;    /* 3a Handle to non-resident name table (ne_psegrefbytes on disk) */
  61     WORD      ne_swaparea;      /* 3c Min. swap area size */
  62     WORD      ne_expver;        /* 3e Expected Windows version */
  63     /* From here, these are extra fields not present in normal Windows */
  64     HMODULE   module32;         /* PE module handle for Win32 modules */
  65     HMODULE   owner32;          /* PE module containing this one for 16-bit builtins */
  66     HMODULE16 self;             /* Handle for this module */
  67     WORD      self_loading_sel; /* Selector used for self-loading apps. */
  68     LPVOID    rsrc32_map;       /* HRSRC 16->32 map (for 32-bit modules) */
  69     LPCVOID   mapping;          /* mapping of the binary file */
  70     SIZE_T    mapping_size;     /* size of the file mapping */
  71 } NE_MODULE;
  72
  73 typedef struct
  74 {
  75     BYTE type;
  76     BYTE flags;
  77     BYTE segnum;
  78     WORD offs;
  79 } ET_ENTRY;
  80
  81 typedef struct
  82 {
  83     WORD first; /* ordinal */
  84     WORD last;  /* ordinal */
  85     WORD next;  /* bundle */
  86 } ET_BUNDLE;
  87
  88
  89   /* In-memory segment table */
  90 typedef struct
  91 {
  92     WORD      filepos;   /* Position in file, in sectors */
  93     WORD      size;      /* Segment size on disk */
  94     WORD      flags;     /* Segment flags */
  95     WORD      minsize;   /* Min. size of segment in memory */
  96     HANDLE16  hSeg;      /* Selector or handle (selector - 1) of segment in memory */
  97 } SEGTABLEENTRY;
  98
  99 /* this structure is always located at offset 0 of the DGROUP segment */
 100 typedef struct
 101 {
 102     WORD null;        /* Always 0 */
 103     DWORD old_ss_sp;  /* Stack pointer; used by SwitchTaskTo() */
 104     WORD heap;        /* Pointer to the local heap information (if any) */
 105     WORD atomtable;   /* Pointer to the local atom table (if any) */
 106     WORD stacktop;    /* Top of the stack */
 107     WORD stackmin;    /* Lowest stack address used so far */
 108     WORD stackbottom; /* Bottom of the stack */
 109 } INSTANCEDATA;
 110
 111 /* relay entry points */
 112
 113 #ifdef __i386__
 114
 115 typedef struct
 116 {
 117     WORD   pushw_bp;               /* pushw %bp */
 118     BYTE   pushl;                  /* pushl $target */
 119     void (*target)();
 120     WORD   call;                   /* call CALLFROM16 */
 121     short  callfrom16;
 122 } ENTRYPOINT16;
 123
 124 typedef struct
 125 {
 126     BYTE   pushl;                  /* pushl $relay */
 127     void  *relay;
 128     BYTE   lcall;                  /* lcall __FLATCS__:glue */
 129     void  *glue;
 130     WORD   flatcs;
 131     WORD   lret;                   /* lret $nArgs */
 132     WORD   nArgs;
 133     DWORD  arg_types[2];           /* type of each argument */
 134 } CALLFROM16;
 135
 136 #else  /* __i386__ */
 137
 138 typedef struct
 139 {
 140     void (*target)();
 141     WORD   call;                   /* call CALLFROM16 */
 142     short  callfrom16;
 143 } ENTRYPOINT16;
 144
 145 typedef struct
 146 {
 147     WORD   lret;                   /* lret $nArgs */
 148     WORD   nArgs;
 149     DWORD  arg_types[2];           /* type of each argument */
 150 } CALLFROM16;
 151
 152 #endif  /* __i386__ */
 153
 154 /* THHOOK Kernel Data Structure */
 155 typedef struct _THHOOK
 156 {
 157     HANDLE16   hGlobalHeap;         /* 00 (handle BURGERMASTER) */
 158     WORD       pGlobalHeap;         /* 02 (selector BURGERMASTER) */
 159     HMODULE16  hExeHead;            /* 04 hFirstModule */
 160     HMODULE16  hExeSweep;           /* 06 (unused) */
 161     HANDLE16   TopPDB;              /* 08 (handle of KERNEL PDB) */
 162     HANDLE16   HeadPDB;             /* 0A (first PDB in list) */
 163     HANDLE16   TopSizePDB;          /* 0C (unused) */
 164     HTASK16    HeadTDB;             /* 0E hFirstTask */
 165     HTASK16    CurTDB;              /* 10 hCurrentTask */
 166     HTASK16    LoadTDB;             /* 12 (unused) */
 167     HTASK16    LockTDB;             /* 14 hLockedTask */
 168 } THHOOK;
 169
 170 extern THHOOK *pThhook;
 171
 172 #include "poppack.h"
 173
 174 #define NE_SEG_TABLE(pModule) \
 175     ((SEGTABLEENTRY *)((char *)(pModule) + (pModule)->ne_segtab))
 176
 177 #define NE_MODULE_NAME(pModule) \
 178     (((OFSTRUCT *)((char*)(pModule) + (pModule)->fileinfo))->szPathName)
 179
 180 #define NE_GET_DATA(pModule,offset,size) \
 181     ((const void *)(((offset)+(size) <= pModule->mapping_size) ? \
 182                     (const char *)pModule->mapping + (offset) : NULL))
 183
 184 #define NE_READ_DATA(pModule,buffer,offset,size) \
 185     (((offset)+(size) <= pModule->mapping_size) ? \
 186      (memcpy( buffer, (const char *)pModule->mapping + (offset), (size) ), TRUE) : FALSE)
 187
 188 #define CURRENT_STACK16 ((STACK16FRAME*)MapSL((SEGPTR)NtCurrentTeb()->WOW32Reserved))
 189 #define CURRENT_DS      (CURRENT_STACK16->ds)
 190
 191 /* push bytes on the 16-bit stack of a thread; return a segptr to the first pushed byte */
 192 static inline SEGPTR stack16_push( int size )
 193 {
 194     STACK16FRAME *frame = CURRENT_STACK16;
 195     memmove( (char*)frame - size, frame, sizeof(*frame) );
 196     NtCurrentTeb()->WOW32Reserved = (char *)NtCurrentTeb()->WOW32Reserved - size;
 197     return (SEGPTR)((char *)NtCurrentTeb()->WOW32Reserved + sizeof(*frame));
 198 }
 199
 200 /* pop bytes from the 16-bit stack of a thread */
 201 static inline void stack16_pop( int size )
 202 {
 203     STACK16FRAME *frame = CURRENT_STACK16;
 204     memmove( (char*)frame + size, frame, sizeof(*frame) );
 205     NtCurrentTeb()->WOW32Reserved = (char *)NtCurrentTeb()->WOW32Reserved + size;
 206 }
 207
 208 /* ne_module.c */
 209 extern NE_MODULE *NE_GetPtr( HMODULE16 hModule );
 210 extern WORD NE_GetOrdinal( HMODULE16 hModule, const char *name );
 211 extern FARPROC16 WINAPI NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal );
 212 extern FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop );
 213 extern BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset );
 214 extern DWORD NE_StartTask(void);
 215
 216 /* ne_segment.c */
 217 extern BOOL NE_LoadSegment( NE_MODULE *pModule, WORD segnum );
 218 extern BOOL NE_LoadAllSegments( NE_MODULE *pModule );
 219 extern BOOL NE_CreateSegment( NE_MODULE *pModule, int segnum );
 220 extern BOOL NE_CreateAllSegments( NE_MODULE *pModule );
 221 extern HINSTANCE16 NE_GetInstance( NE_MODULE *pModule );
 222 extern void NE_InitializeDLLs( HMODULE16 hModule );
 223 extern void NE_DllProcessAttach( HMODULE16 hModule );
 224 extern void NE_CallUserSignalProc( HMODULE16 hModule, UINT16 code );
 225
 226 /* selector.c */
 227 extern WORD SELECTOR_AllocBlock( const void *base, DWORD size, unsigned char flags );
 228 extern WORD SELECTOR_ReallocBlock( WORD sel, const void *base, DWORD size );
 229 extern void SELECTOR_FreeBlock( WORD sel );
 230 #define IS_SELECTOR_32BIT(sel) \
 231    (wine_ldt_is_system(sel) || (wine_ldt_copy.flags[LOWORD(sel) >> 3] & WINE_LDT_FLAGS_32BIT))
 232
 233 /* snoop16.c */
 234 extern void SNOOP16_RegisterDLL(HMODULE16,LPCSTR);
 235 extern FARPROC16 SNOOP16_GetProcAddress16(HMODULE16,DWORD,FARPROC16);
 236 extern int SNOOP16_ShowDebugmsgSnoop(const char *dll,int ord,const char *fname);
 237
 238 /* task.c */
 239 extern void TASK_CreateMainTask(void);
 240 extern HTASK16 TASK_SpawnTask( NE_MODULE *pModule, WORD cmdShow,
 241                                LPCSTR cmdline, BYTE len, HANDLE *hThread );
 242 extern void TASK_ExitTask(void);
 243 extern HTASK16 TASK_GetTaskFromThread( DWORD thread );
 244 extern TDB *TASK_GetCurrent(void);
 245 extern void TASK_InstallTHHook( THHOOK *pNewThook );
 246
 247 #endif  /* __WINE_KERNEL16_PRIVATE_H */