dlls/krnl386.exe16/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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 typedef struct
 114 {
 115     WORD   pushw_bp;               /* pushw %bp */
 116     BYTE   pushl;                  /* pushl $target */
 117     void  *target;
 118     WORD   call;                   /* call CALLFROM16 */
 119     short  callfrom16;
 120 } ENTRYPOINT16;
 121
 122 typedef struct
 123 {
 124     BYTE   pushl;                  /* pushl $relay */
 125     void  *relay;
 126     BYTE   lcall;                  /* lcall __FLATCS__:glue */
 127     void  *glue;
 128     WORD   flatcs;
 129     WORD   ret[5];                 /* return sequence */
 130     WORD   movl;                   /* movl arg_types[1],arg_types[0](%esi) */
 131     DWORD  arg_types[2];           /* type of each argument */
 132 } CALLFROM16;
 133
 134 /* THHOOK Kernel Data Structure */
 135 typedef struct _THHOOK
 136 {
 137     HANDLE16   hGlobalHeap;         /* 00 (handle BURGERMASTER) */
 138     WORD       pGlobalHeap;         /* 02 (selector BURGERMASTER) */
 139     HMODULE16  hExeHead;            /* 04 hFirstModule */
 140     HMODULE16  hExeSweep;           /* 06 (unused) */
 141     HANDLE16   TopPDB;              /* 08 (handle of KERNEL PDB) */
 142     HANDLE16   HeadPDB;             /* 0A (first PDB in list) */
 143     HANDLE16   TopSizePDB;          /* 0C (unused) */
 144     HTASK16    HeadTDB;             /* 0E hFirstTask */
 145     HTASK16    CurTDB;              /* 10 hCurrentTask */
 146     HTASK16    LoadTDB;             /* 12 (unused) */
 147     HTASK16    LockTDB;             /* 14 hLockedTask */
 148 } THHOOK;
 149
 150 extern LONG __wine_call_from_16(void);
 151 extern void __wine_call_from_16_regs(void);
 152
 153 extern THHOOK *pThhook DECLSPEC_HIDDEN;
 154
 155 #include "poppack.h"
 156
 157 #define NE_SEG_TABLE(pModule) \
 158     ((SEGTABLEENTRY *)((char *)(pModule) + (pModule)->ne_segtab))
 159
 160 #define NE_MODULE_NAME(pModule) \
 161     (((OFSTRUCT *)((char*)(pModule) + (pModule)->fileinfo))->szPathName)
 162
 163 #define NE_GET_DATA(pModule,offset,size) \
 164     ((const void *)(((offset)+(size) <= pModule->mapping_size) ? \
 165                     (const char *)pModule->mapping + (offset) : NULL))
 166
 167 #define NE_READ_DATA(pModule,buffer,offset,size) \
 168     (((offset)+(size) <= pModule->mapping_size) ? \
 169      (memcpy( buffer, (const char *)pModule->mapping + (offset), (size) ), TRUE) : FALSE)
 170
 171 #define CURRENT_STACK16 ((STACK16FRAME*)MapSL(PtrToUlong(NtCurrentTeb()->WOW32Reserved)))
 172 #define CURRENT_DS      (CURRENT_STACK16->ds)
 173
 174 /* push bytes on the 16-bit stack of a thread; return a segptr to the first pushed byte */
 175 static inline SEGPTR stack16_push( int size )
 176 {
 177     STACK16FRAME *frame = CURRENT_STACK16;
 178     memmove( (char*)frame - size, frame, sizeof(*frame) );
 179     NtCurrentTeb()->WOW32Reserved = (char *)NtCurrentTeb()->WOW32Reserved - size;
 180     return (SEGPTR)((char *)NtCurrentTeb()->WOW32Reserved + sizeof(*frame));
 181 }
 182
 183 /* pop bytes from the 16-bit stack of a thread */
 184 static inline void stack16_pop( int size )
 185 {
 186     STACK16FRAME *frame = CURRENT_STACK16;
 187     memmove( (char*)frame + size, frame, sizeof(*frame) );
 188     NtCurrentTeb()->WOW32Reserved = (char *)NtCurrentTeb()->WOW32Reserved + size;
 189 }
 190
 191 /* dosmem.c */
 192 extern BOOL   DOSMEM_Init(void) DECLSPEC_HIDDEN;
 193 extern BOOL   DOSMEM_InitDosMemory(void) DECLSPEC_HIDDEN;
 194 extern LPVOID DOSMEM_MapRealToLinear(DWORD) DECLSPEC_HIDDEN; /* real-mode to linear */
 195 extern LPVOID DOSMEM_MapDosToLinear(UINT) DECLSPEC_HIDDEN;   /* linear DOS to Wine */
 196 extern UINT   DOSMEM_MapLinearToDos(LPVOID) DECLSPEC_HIDDEN; /* linear Wine to DOS */
 197 extern BOOL   DOSMEM_MapDosLayout(void) DECLSPEC_HIDDEN;
 198 extern LPVOID DOSMEM_AllocBlock(UINT size, WORD* p) DECLSPEC_HIDDEN;
 199 extern BOOL   DOSMEM_FreeBlock(void* ptr) DECLSPEC_HIDDEN;
 200 extern UINT   DOSMEM_ResizeBlock(void* ptr, UINT size, BOOL exact) DECLSPEC_HIDDEN;
 201 extern UINT   DOSMEM_Available(void) DECLSPEC_HIDDEN;
 202
 203 /* global16.c */
 204 extern HGLOBAL16 GLOBAL_CreateBlock( UINT16 flags, void *ptr, DWORD size,
 205                                      HGLOBAL16 hOwner, unsigned char selflags ) DECLSPEC_HIDDEN;
 206 extern BOOL16 GLOBAL_FreeBlock( HGLOBAL16 handle ) DECLSPEC_HIDDEN;
 207 extern BOOL16 GLOBAL_MoveBlock( HGLOBAL16 handle, void *ptr, DWORD size ) DECLSPEC_HIDDEN;
 208 extern HGLOBAL16 GLOBAL_Alloc( WORD flags, DWORD size, HGLOBAL16 hOwner, unsigned char selflags ) DECLSPEC_HIDDEN;
 209
 210 /* instr.c */
 211 extern DWORD __wine_emulate_instruction( EXCEPTION_RECORD *rec, CONTEXT *context ) DECLSPEC_HIDDEN;
 212 extern LONG CALLBACK INSTR_vectored_handler( EXCEPTION_POINTERS *ptrs ) DECLSPEC_HIDDEN;
 213
 214 /* ne_module.c */
 215 extern NE_MODULE *NE_GetPtr( HMODULE16 hModule ) DECLSPEC_HIDDEN;
 216 extern WORD NE_GetOrdinal( HMODULE16 hModule, const char *name ) DECLSPEC_HIDDEN;
 217 extern FARPROC16 WINAPI NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal ) DECLSPEC_HIDDEN;
 218 extern FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop ) DECLSPEC_HIDDEN;
 219 extern BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset ) DECLSPEC_HIDDEN;
 220 extern DWORD NE_StartTask(void) DECLSPEC_HIDDEN;
 221
 222 /* ne_segment.c */
 223 extern BOOL NE_LoadSegment( NE_MODULE *pModule, WORD segnum ) DECLSPEC_HIDDEN;
 224 extern BOOL NE_LoadAllSegments( NE_MODULE *pModule ) DECLSPEC_HIDDEN;
 225 extern BOOL NE_CreateSegment( NE_MODULE *pModule, int segnum ) DECLSPEC_HIDDEN;
 226 extern BOOL NE_CreateAllSegments( NE_MODULE *pModule ) DECLSPEC_HIDDEN;
 227 extern HINSTANCE16 NE_GetInstance( NE_MODULE *pModule ) DECLSPEC_HIDDEN;
 228 extern void NE_InitializeDLLs( HMODULE16 hModule ) DECLSPEC_HIDDEN;
 229 extern void NE_DllProcessAttach( HMODULE16 hModule ) DECLSPEC_HIDDEN;
 230 extern void NE_CallUserSignalProc( HMODULE16 hModule, UINT16 code ) DECLSPEC_HIDDEN;
 231
 232 /* selector.c */
 233 extern WORD SELECTOR_AllocBlock( const void *base, DWORD size, unsigned char flags ) DECLSPEC_HIDDEN;
 234 extern WORD SELECTOR_ReallocBlock( WORD sel, const void *base, DWORD size ) DECLSPEC_HIDDEN;
 235 extern void SELECTOR_FreeBlock( WORD sel ) DECLSPEC_HIDDEN;
 236 #define IS_SELECTOR_32BIT(sel) \
 237    (wine_ldt_is_system(sel) || (wine_ldt_copy.flags[LOWORD(sel) >> 3] & WINE_LDT_FLAGS_32BIT))
 238
 239 /* relay16.c */
 240 extern int relay_call_from_16( void *entry_point, unsigned char *args16, CONTEXT *context ) DECLSPEC_HIDDEN;
 241 extern void RELAY16_InitDebugLists(void) DECLSPEC_HIDDEN;
 242
 243 /* snoop16.c */
 244 extern void SNOOP16_RegisterDLL(HMODULE16,LPCSTR) DECLSPEC_HIDDEN;
 245 extern FARPROC16 SNOOP16_GetProcAddress16(HMODULE16,DWORD,FARPROC16) DECLSPEC_HIDDEN;
 246 extern BOOL SNOOP16_ShowDebugmsgSnoop(const char *dll,int ord,const char *fname) DECLSPEC_HIDDEN;
 247
 248 /* syslevel.c */
 249 extern VOID SYSLEVEL_CheckNotLevel( INT level ) DECLSPEC_HIDDEN;
 250
 251 /* task.c */
 252 extern void TASK_CreateMainTask(void) DECLSPEC_HIDDEN;
 253 extern HTASK16 TASK_SpawnTask( NE_MODULE *pModule, WORD cmdShow,
 254                                LPCSTR cmdline, BYTE len, HANDLE *hThread ) DECLSPEC_HIDDEN;
 255 extern void TASK_ExitTask(void) DECLSPEC_HIDDEN;
 256 extern HTASK16 TASK_GetTaskFromThread( DWORD thread ) DECLSPEC_HIDDEN;
 257 extern TDB *TASK_GetCurrent(void) DECLSPEC_HIDDEN;
 258 extern void TASK_InstallTHHook( THHOOK *pNewThook ) DECLSPEC_HIDDEN;
 259
 260 extern BOOL WOWTHUNK_Init(void) DECLSPEC_HIDDEN;
 261
 262 extern WORD DOSMEM_0000H DECLSPEC_HIDDEN;
 263 extern WORD DOSMEM_BiosDataSeg DECLSPEC_HIDDEN;
 264 extern WORD DOSMEM_BiosSysSeg DECLSPEC_HIDDEN;
 265 extern DWORD CallTo16_DataSelector DECLSPEC_HIDDEN;
 266 extern DWORD CallTo16_TebSelector DECLSPEC_HIDDEN;
 267 extern SEGPTR CALL32_CBClient_RetAddr DECLSPEC_HIDDEN;
 268 extern SEGPTR CALL32_CBClientEx_RetAddr DECLSPEC_HIDDEN;
 269
 270 struct tagSYSLEVEL;
 271
 272 struct kernel_thread_data
 273 {
 274     WORD                stack_sel;      /* 16-bit stack selector */
 275     WORD                htask16;        /* Win16 task handle */
 276     DWORD               sys_count[4];   /* syslevel mutex entry counters */
 277     struct tagSYSLEVEL *sys_mutex[4];   /* syslevel mutex pointers */
 278     void               *pad[45];        /* change this if you add fields! */
 279 };
 280
 281 static inline struct kernel_thread_data *kernel_get_thread_data(void)
 282 {
 283     return (struct kernel_thread_data *)NtCurrentTeb()->SystemReserved1;
 284 }
 285
 286 /* Push a DWORD on the 32-bit stack */
 287 static inline void stack32_push( CONTEXT *context, DWORD val )
 288 {
 289     context->Esp -= sizeof(DWORD);
 290     *(DWORD *)context->Esp = val;
 291 }
 292
 293 /* Pop a DWORD from the 32-bit stack */
 294 static inline DWORD stack32_pop( CONTEXT *context )
 295 {
 296     DWORD ret = *(DWORD *)context->Esp;
 297     context->Esp += sizeof(DWORD);
 298     return ret;
 299 }
 300
 301 #define DEFINE_REGS_ENTRYPOINT(name) \
 302     __ASM_STDCALL_FUNC( name, 0,                                        \
 303                         "pushl %ebp\n\t"                                \
 304                         __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")       \
 305                         __ASM_CFI(".cfi_rel_offset %ebp,0\n\t")         \
 306                         "movl %esp,%ebp\n\t"                            \
 307                         __ASM_CFI(".cfi_def_cfa_register %ebp\n\t")     \
 308                         "leal -(0x2cc+4)(%esp),%esp\n\t"  /* sizeof(CONTEXT) + space for %eax */ \
 309                         "movl %eax,-4(%ebp)\n\t"                        \
 310                         "pushl %esp\n\t"             /* context */      \
 311                         "call " __ASM_NAME("RtlCaptureContext") __ASM_STDCALL(4) "\n\t" \
 312                         "movl -4(%ebp),%eax\n\t"                        \
 313                         "movl %eax,0xb0(%esp)\n\t"   /* context->Eax */ \
 314                         "pushl %esp\n\t"             /* context */      \
 315                         "call " __ASM_NAME("__regs_") #name __ASM_STDCALL(4) "\n\t" \
 316                         "pushl %esp\n\t"             /* context */      \
 317                         "pushl $-2\n\t"   /* GetCurrentThread() */      \
 318                         "call " __ASM_NAME("NtSetContextThread") __ASM_STDCALL(8) "\n\t" \
 319                         "ret" ) /* fake ret to make copy protections happy */
 320
 321 #endif  /* __WINE_KERNEL16_PRIVATE_H */