2 * Copyright 1993 Robert J. Amstadt
3 * Copyright 1995 Alexandre Julliard
9 #include "wine/winbase16.h"
14 #include "stackframe.h"
15 #include "builtin16.h"
19 #include "debugtools.h"
22 DEFAULT_DEBUG_CHANNEL(relay)
25 /***********************************************************************
32 /* Allocate the code selector for CallTo16 routines */
34 extern void Call16_Ret_Start(), Call16_Ret_End();
35 extern void CallTo16_Ret();
36 extern void CALL32_CBClient_Ret();
37 extern void CALL32_CBClientEx_Ret();
38 extern DWORD CallTo16_RetAddr;
39 extern DWORD CALL32_CBClient_RetAddr;
40 extern DWORD CALL32_CBClientEx_RetAddr;
42 codesel = GLOBAL_CreateBlock( GMEM_FIXED, (void *)Call16_Ret_Start,
43 (int)Call16_Ret_End - (int)Call16_Ret_Start,
44 0, TRUE, TRUE, FALSE, NULL );
45 if (!codesel) return FALSE;
47 /* Patch the return addresses for CallTo16 routines */
50 MAKELONG( (int)CallTo16_Ret -(int)Call16_Ret_Start, codesel );
51 CALL32_CBClient_RetAddr =
52 MAKELONG( (int)CALL32_CBClient_Ret -(int)Call16_Ret_Start, codesel );
53 CALL32_CBClientEx_RetAddr =
54 MAKELONG( (int)CALL32_CBClientEx_Ret -(int)Call16_Ret_Start, codesel );
56 /* Create built-in modules */
57 if (!BUILTIN_Init()) return FALSE;
59 /* Initialize thunking */
64 /* from relay32/relay386.c */
65 extern char **debug_relay_excludelist,**debug_relay_includelist;
67 /***********************************************************************
68 * RELAY_DebugCallFrom16
70 void RELAY_DebugCallFrom16( CONTEXT86 *context )
74 char *args16, funstr[80];
76 int i, usecdecl, reg_func;
78 if (!TRACE_ON(relay)) return;
80 frame = CURRENT_STACK16;
81 args = BUILTIN_GetEntryPoint16( frame, funstr, &ordinal );
82 if (!args) return; /* happens for the two snoop register relays */
83 if (!RELAY_ShowDebugmsgRelay(funstr)) return;
84 DPRINTF( "Call %s(",funstr);
87 usecdecl = ( *args == 'c' );
89 reg_func = ( memcmp( args, "regs_", 5 ) == 0
90 || memcmp( args, "intr_", 5 ) == 0 );
101 DPRINTF( "0x%04x", *(WORD *)args16 );
105 DPRINTF( "0x%08x", *(int *)args16 );
109 DPRINTF( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
110 if (HIWORD(*(SEGPTR *)args16))
111 debug_dumpstr( (LPSTR)PTR_SEG_TO_LIN(*(SEGPTR *)args16 ));
115 DPRINTF( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
119 DPRINTF( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
120 if (HIWORD( *(SEGPTR *)args16 ))
121 debug_dumpstr( (LPSTR)PTR_SEG_TO_LIN(*(SEGPTR *)args16 ));
126 if (*args) DPRINTF( "," );
131 /* Start with the last arg */
132 for (i = 0; args[i]; i++)
156 DPRINTF( "0x%04x", *(WORD *)args16 );
160 DPRINTF( "0x%08x", *(int *)args16 );
164 DPRINTF( "0x%08x", *(int *)args16 );
165 if (HIWORD(*(SEGPTR *)args16))
166 debug_dumpstr( (LPSTR)PTR_SEG_TO_LIN(*(SEGPTR *)args16 ));
170 DPRINTF( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
174 DPRINTF( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
175 if (HIWORD( *(SEGPTR *)args16 ))
176 debug_dumpstr( (LPSTR)PTR_SEG_TO_LIN(*(SEGPTR *)args16 ));
180 if (*args) DPRINTF( "," );
184 DPRINTF( ") ret=%04x:%04x ds=%04x\n", frame->cs, frame->ip, frame->ds );
188 DPRINTF(" AX=%04x BX=%04x CX=%04x DX=%04x SI=%04x DI=%04x ES=%04x EFL=%08lx\n",
189 AX_reg(context), BX_reg(context), CX_reg(context),
190 DX_reg(context), SI_reg(context), DI_reg(context),
191 (WORD)ES_reg(context), EFL_reg(context) );
193 SYSLEVEL_CheckNotLevel( 2 );
197 /***********************************************************************
198 * RELAY_DebugCallFrom16Ret
200 void RELAY_DebugCallFrom16Ret( CONTEXT86 *context, int ret_val )
207 if (!TRACE_ON(relay)) return;
208 frame = CURRENT_STACK16;
209 args = BUILTIN_GetEntryPoint16( frame, funstr, &ordinal );
211 if (!RELAY_ShowDebugmsgRelay(funstr)) return;
212 DPRINTF( "Ret %s() ",funstr);
214 if ( memcmp( args+2, "long_", 5 ) == 0 )
216 DPRINTF( "retval=0x%08x ret=%04x:%04x ds=%04x\n",
217 ret_val, frame->cs, frame->ip, frame->ds );
219 else if ( memcmp( args+2, "word_", 5 ) == 0 )
221 DPRINTF( "retval=0x%04x ret=%04x:%04x ds=%04x\n",
222 ret_val & 0xffff, frame->cs, frame->ip, frame->ds );
224 else if ( memcmp( args+2, "regs_", 5 ) == 0
225 || memcmp( args+2, "intr_", 5 ) == 0 )
227 DPRINTF("retval=none ret=%04x:%04x ds=%04x\n",
228 (WORD)CS_reg(context), LOWORD(EIP_reg(context)), (WORD)DS_reg(context));
229 DPRINTF(" AX=%04x BX=%04x CX=%04x DX=%04x SI=%04x DI=%04x ES=%04x EFL=%08lx\n",
230 AX_reg(context), BX_reg(context), CX_reg(context),
231 DX_reg(context), SI_reg(context), DI_reg(context),
232 (WORD)ES_reg(context), EFL_reg(context) );
235 SYSLEVEL_CheckNotLevel( 2 );
239 /***********************************************************************
240 * RELAY_Unimplemented16
242 * This function is called for unimplemented 16-bit entry points (declared
243 * as 'stub' in the spec file).
245 void RELAY_Unimplemented16(void)
249 STACK16FRAME *frame = CURRENT_STACK16;
250 BUILTIN_GetEntryPoint16( frame, name, &ordinal );
251 MESSAGE("No handler for Win16 routine %s (called from %04x:%04x)\n",
252 name, frame->cs, frame->ip );
257 /***********************************************************************
258 * RELAY_DebugCallTo16
260 * 'target' contains either the function to call (normal CallTo16)
261 * or a pointer to the CONTEXT86 struct (register CallTo16).
262 * 'nb_args' is the number of argument bytes on the 16-bit stack;
263 * 'reg_func' specifies whether we have a register CallTo16 or not.
265 void RELAY_DebugCallTo16( LPVOID target, int nb_args, BOOL reg_func )
270 if (!TRACE_ON(relay)) return;
271 teb = NtCurrentTeb();
272 stack16 = (WORD *)THREAD_STACK16(teb);
274 nb_args /= sizeof(WORD);
278 CONTEXT86 *context = (CONTEXT86 *)target;
280 DPRINTF("CallTo16(func=%04lx:%04x,ds=%04lx",
281 CS_reg(context), LOWORD(EIP_reg(context)), DS_reg(context) );
282 while (nb_args--) DPRINTF( ",0x%04x", *--stack16 );
283 DPRINTF(") ss:sp=%04x:%04x\n", SELECTOROF(teb->cur_stack),
284 OFFSETOF(teb->cur_stack) );
285 DPRINTF(" AX=%04x BX=%04x CX=%04x DX=%04x SI=%04x DI=%04x BP=%04x ES=%04x FS=%04x\n",
286 AX_reg(context), BX_reg(context), CX_reg(context),
287 DX_reg(context), SI_reg(context), DI_reg(context),
288 BP_reg(context), (WORD)ES_reg(context), (WORD)FS_reg(context) );
292 DPRINTF("CallTo16(func=%04x:%04x,ds=%04x",
293 HIWORD(target), LOWORD(target), SELECTOROF(teb->cur_stack) );
294 while (nb_args--) DPRINTF( ",0x%04x", *--stack16 );
295 DPRINTF(") ss:sp=%04x:%04x\n", SELECTOROF(teb->cur_stack),
296 OFFSETOF(teb->cur_stack) );
299 SYSLEVEL_CheckNotLevel( 2 );
303 /***********************************************************************
304 * RELAY_DebugCallTo16Ret
306 void RELAY_DebugCallTo16Ret( int ret_val )
308 if (!TRACE_ON(relay)) return;
310 DPRINTF("CallTo16() ss:sp=%04x:%04x retval=0x%08x\n",
311 SELECTOROF(NtCurrentTeb()->cur_stack),
312 OFFSETOF(NtCurrentTeb()->cur_stack), ret_val);
313 SYSLEVEL_CheckNotLevel( 2 );
317 /**********************************************************************
321 * INT16 WINAPI Catch( LPCATCHBUF lpbuf );
323 void WINAPI Catch16( LPCATCHBUF lpbuf, CONTEXT86 *context )
325 /* Note: we don't save the current ss, as the catch buffer is */
326 /* only 9 words long. Hopefully no one will have the silly */
327 /* idea to change the current stack before calling Throw()... */
341 lpbuf[0] = LOWORD(EIP_reg(context));
342 lpbuf[1] = CS_reg(context);
343 /* Windows pushes 4 more words before saving sp */
344 lpbuf[2] = LOWORD(ESP_reg(context)) - 4 * sizeof(WORD);
345 lpbuf[3] = LOWORD(EBP_reg(context));
346 lpbuf[4] = LOWORD(ESI_reg(context));
347 lpbuf[5] = LOWORD(EDI_reg(context));
348 lpbuf[6] = DS_reg(context);
350 lpbuf[8] = SS_reg(context);
351 AX_reg(context) = 0; /* Return 0 */
355 /**********************************************************************
359 * INT16 WINAPI Throw( LPCATCHBUF lpbuf, INT16 retval );
361 void WINAPI Throw16( LPCATCHBUF lpbuf, INT16 retval, CONTEXT86 *context )
363 STACK16FRAME *pFrame;
364 STACK32FRAME *frame32;
365 TEB *teb = NtCurrentTeb();
367 AX_reg(context) = retval;
369 /* Find the frame32 corresponding to the frame16 we are jumping to */
370 pFrame = THREAD_STACK16(teb);
371 frame32 = pFrame->frame32;
372 while (frame32 && frame32->frame16)
374 if (OFFSETOF(frame32->frame16) < OFFSETOF(teb->cur_stack))
375 break; /* Something strange is going on */
376 if (OFFSETOF(frame32->frame16) > lpbuf[2])
378 /* We found the right frame */
379 pFrame->frame32 = frame32;
382 frame32 = ((STACK16FRAME *)PTR_SEG_TO_LIN(frame32->frame16))->frame32;
385 EIP_reg(context) = lpbuf[0];
386 CS_reg(context) = lpbuf[1];
387 ESP_reg(context) = lpbuf[2] + 4 * sizeof(WORD) - sizeof(WORD) /*extra arg*/;
388 EBP_reg(context) = lpbuf[3];
389 ESI_reg(context) = lpbuf[4];
390 EDI_reg(context) = lpbuf[5];
391 DS_reg(context) = lpbuf[6];
393 if (lpbuf[8] != SS_reg(context))
394 ERR("Switching stack segment with Throw() not supported; expect crash now\n" );