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();
151 extern void __wine_call_from_16_regs();
152
153 extern THHOOK *pThhook;
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 /* ne_module.c */
192 extern NE_MODULE *NE_GetPtr( HMODULE16 hModule );
193 extern WORD NE_GetOrdinal( HMODULE16 hModule, const char *name );
194 extern FARPROC16 WINAPI NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal );
195 extern FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop );
196 extern BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset );
197 extern DWORD NE_StartTask(void);
198
199 /* ne_segment.c */
200 extern BOOL NE_LoadSegment( NE_MODULE *pModule, WORD segnum );
201 extern BOOL NE_LoadAllSegments( NE_MODULE *pModule );
202 extern BOOL NE_CreateSegment( NE_MODULE *pModule, int segnum );
203 extern BOOL NE_CreateAllSegments( NE_MODULE *pModule );
204 extern HINSTANCE16 NE_GetInstance( NE_MODULE *pModule );
205 extern void NE_InitializeDLLs( HMODULE16 hModule );
206 extern void NE_DllProcessAttach( HMODULE16 hModule );
207 extern void NE_CallUserSignalProc( HMODULE16 hModule, UINT16 code );
208
209 /* selector.c */
210 extern WORD SELECTOR_AllocBlock( const void *base, DWORD size, unsigned char flags );
211 extern WORD SELECTOR_ReallocBlock( WORD sel, const void *base, DWORD size );
212 extern void SELECTOR_FreeBlock( WORD sel );
213 #define IS_SELECTOR_32BIT(sel) \
214 (wine_ldt_is_system(sel) || (wine_ldt_copy.flags[LOWORD(sel) >> 3] & WINE_LDT_FLAGS_32BIT))
215
216 /* relay16.c */
217 extern int relay_call_from_16( void *entry_point, unsigned char *args16, CONTEXT86 *context );
218
219 /* snoop16.c */
220 extern void SNOOP16_RegisterDLL(HMODULE16,LPCSTR);
221 extern FARPROC16 SNOOP16_GetProcAddress16(HMODULE16,DWORD,FARPROC16);
222 extern int SNOOP16_ShowDebugmsgSnoop(const char *dll,int ord,const char *fname);
223
224 /* task.c */
225 extern void TASK_CreateMainTask(void);
226 extern HTASK16 TASK_SpawnTask( NE_MODULE *pModule, WORD cmdShow,
227 LPCSTR cmdline, BYTE len, HANDLE *hThread );
228 extern void TASK_ExitTask(void);
229 extern HTASK16 TASK_GetTaskFromThread( DWORD thread );
230 extern TDB *TASK_GetCurrent(void);
231 extern void TASK_InstallTHHook( THHOOK *pNewThook );
232
233 extern BOOL WOWTHUNK_Init(void);
234
235 extern DWORD CallTo16_DataSelector;
236 extern DWORD CallTo16_TebSelector;
237 extern SEGPTR CALL32_CBClient_RetAddr;
238 extern SEGPTR CALL32_CBClientEx_RetAddr;
239
240 #endif /* __WINE_KERNEL16_PRIVATE_H */
241
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