2 * File source.c - source file handling for internal debugger.
4 * Copyright (C) 1997, Eric Youngdale.
12 #include <sys/types.h>
13 #ifdef HAVE_SYS_MMAN_H
22 #define PATH_MAX _MAX_PATH
30 struct searchlist * next;
38 struct open_filelist * next;
41 unsigned int * linelist;
44 static struct open_filelist * ofiles;
46 static struct searchlist * listhead;
47 static char DEBUG_current_sourcefile[PATH_MAX];
48 static int DEBUG_start_sourceline = -1;
49 static int DEBUG_end_sourceline = -1;
54 struct searchlist * sl;
56 DEBUG_Printf(DBG_CHN_MESG,"Search list :\n");
57 for(sl = listhead; sl; sl = sl->next)
59 DEBUG_Printf(DBG_CHN_MESG, "\t%s\n", sl->path);
61 DEBUG_Printf(DBG_CHN_MESG, "\n");
65 DEBUG_AddPath(const char * path)
67 struct searchlist * sl;
69 sl = (struct searchlist *) DBG_alloc(sizeof(struct searchlist));
76 sl->path = DBG_strdup(path);
83 struct searchlist * sl;
84 struct searchlist * nxt;
86 for(sl = listhead; sl; sl = nxt)
98 DEBUG_DisplaySource(char * sourcefile, int start, int end)
104 struct open_filelist * ol;
106 char * basename = NULL;
109 struct searchlist * sl;
112 char tmppath[PATH_MAX];
115 * First see whether we have the file open already. If so, then
116 * use that, otherwise we have to try and open it.
118 for(ol = ofiles; ol; ol = ol->next)
120 if( strcmp(ol->path, sourcefile) == 0 )
129 * Try again, stripping the path from the opened file.
131 basename = strrchr(sourcefile, '\\' );
133 basename = strrchr(sourcefile, '/' );
135 basename = sourcefile;
139 for(ol = ofiles; ol; ol = ol->next)
141 if( strcmp(ol->path, basename) == 0 )
152 * Crapola. We need to try and open the file.
154 status = stat(sourcefile, &statbuf);
157 strcpy(tmppath, sourcefile);
159 else if( (status = stat(basename, &statbuf)) != -1 )
161 strcpy(tmppath, basename);
165 for(sl = listhead; sl; sl = sl->next)
167 strcpy(tmppath, sl->path);
168 if( tmppath[strlen(tmppath)-1] != '/' )
170 strcat(tmppath, "/");
173 * Now append the base file name.
175 strcat(tmppath, basename);
177 status = stat(tmppath, &statbuf);
188 * Still couldn't find it. Ask user for path to add.
190 sprintf(zbuf, "Enter path to file %s: ", sourcefile);
191 lstrcpynA(tmppath, readline(zbuf), sizeof(tmppath));
193 if( tmppath[strlen(tmppath)-1] == '\n' )
195 tmppath[strlen(tmppath)-1] = '\0';
198 if( tmppath[strlen(tmppath)-1] != '/' )
200 strcat(tmppath, "/");
203 * Now append the base file name.
205 strcat(tmppath, basename);
207 status = stat(tmppath, &statbuf);
211 * OK, I guess the user doesn't really want to see it
214 ol = (struct open_filelist *) DBG_alloc(sizeof(*ol));
215 ol->path = DBG_strdup(sourcefile);
216 ol->real_path = NULL;
221 DEBUG_Printf(DBG_CHN_MESG,"Unable to open file %s\n", tmppath);
227 * Create header for file.
229 ol = (struct open_filelist *) DBG_alloc(sizeof(*ol));
230 ol->path = DBG_strdup(sourcefile);
231 ol->real_path = DBG_strdup(tmppath);
235 ol->size = statbuf.st_size;
239 * Now open and map the file.
241 fd = open(tmppath, O_RDONLY);
247 addr = mmap(0, statbuf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
248 if( addr == (char *) -1 )
254 * Now build up the line number mapping table.
258 while(pnt < addr + ol->size )
267 ol->linelist = (unsigned int*) DBG_alloc( ol->nlines * sizeof(unsigned int) );
271 ol->linelist[nlines++] = 0;
272 while(pnt < addr + ol->size )
276 ol->linelist[nlines++] = pnt - addr;
279 ol->linelist[nlines++] = pnt - addr;
285 * We know what the file is, we just need to reopen it and remap it.
287 fd = open(ol->real_path, O_RDONLY);
293 addr = mmap(0, ol->size, PROT_READ, MAP_PRIVATE, fd, 0);
294 if( addr == (char *) -1 )
301 * All we need to do is to display the source lines here.
304 for(i=start - 1; i <= end - 1; i++)
306 if( i < 0 || i >= ol->nlines - 1)
312 memset(&buffer, 0, sizeof(buffer));
313 if( ol->linelist[i+1] != ol->linelist[i] )
315 memcpy(&buffer, addr + ol->linelist[i],
316 (ol->linelist[i+1] - ol->linelist[i]) - 1);
318 DEBUG_Printf(DBG_CHN_MESG,"%d\t%s\n", i + 1, buffer);
321 munmap(addr, ol->size);
329 DEBUG_List(struct list_id * source1, struct list_id * source2,
338 * We need to see what source file we need. Hopefully we only have
339 * one specified, otherwise we might as well punt.
343 && source1->sourcefile != NULL
344 && source2->sourcefile != NULL
345 && strcmp(source1->sourcefile, source2->sourcefile) != 0 )
347 DEBUG_Printf(DBG_CHN_MESG, "Ambiguous source file specification.\n");
352 if( source1 != NULL && source1->sourcefile != NULL )
354 sourcefile = source1->sourcefile;
357 if( sourcefile == NULL
359 && source2->sourcefile != NULL )
361 sourcefile = source2->sourcefile;
364 if( sourcefile == NULL )
366 sourcefile = (char *) &DEBUG_current_sourcefile;
369 if( sourcefile == NULL )
371 DEBUG_Printf(DBG_CHN_MESG, "No source file specified.\n");
376 * Now figure out the line number range to be listed.
381 if( source1 != NULL )
383 start = source1->line;
386 if( source2 != NULL )
391 if( start == -1 && end == -1 )
395 end = DEBUG_start_sourceline;
400 start = DEBUG_end_sourceline;
404 else if( start == -1 )
414 * Now call this function to do the dirty work.
416 rtn = DEBUG_DisplaySource(sourcefile, start, end);
418 if( sourcefile != (char *) &DEBUG_current_sourcefile )
420 strcpy(DEBUG_current_sourcefile, sourcefile);
422 DEBUG_start_sourceline = start;
423 DEBUG_end_sourceline = end;
426 DBG_ADDR DEBUG_LastDisassemble={0,0};
429 _disassemble(DBG_ADDR *addr)
433 DEBUG_PrintAddress( addr, DEBUG_CurrThread->dbg_mode, TRUE );
434 DEBUG_Printf(DBG_CHN_MESG,": ");
435 if (!DEBUG_READ_MEM_VERBOSE((void*)DEBUG_ToLinear(addr), &ch, sizeof(ch))) return 0;
436 DEBUG_Disasm( addr, TRUE );
437 DEBUG_Printf(DBG_CHN_MESG,"\n");
442 _disassemble_fixaddr(DBG_VALUE *value) {
444 struct datatype *testtype;
446 assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
449 DEBUG_FixAddress(&value->addr, DEBUG_context.SegCs);
452 if( value->type != NULL )
454 if( value->type == DEBUG_TypeIntConst )
457 * We know that we have the actual offset stored somewhere
458 * else in 32-bit space. Grab it, and we
461 seg2 = value->addr.seg;
463 value->addr.off = DEBUG_GetExprValue(value, NULL);
464 value->addr.seg = seg2;
468 DEBUG_TypeDerefPointer(value, &testtype);
469 if( testtype != NULL || value->type == DEBUG_TypeIntConst )
470 value->addr.off = DEBUG_GetExprValue(value, NULL);
473 else if (!value->addr.seg && !value->addr.off)
475 DEBUG_Printf(DBG_CHN_MESG,"Invalid expression\n");
481 DEBUG_Disassemble(const DBG_VALUE *xstart,const DBG_VALUE *xend,int offset)
489 _disassemble_fixaddr(&start);
493 _disassemble_fixaddr(&end);
495 if (!xstart && !xend) {
496 last = DEBUG_LastDisassemble;
497 if (!last.seg && !last.off)
498 DEBUG_GetCurrentAddress( &last );
500 for (i=0;i<offset;i++)
501 if (!_disassemble(&last)) break;
502 DEBUG_LastDisassemble = last;
507 for (i=0;i<offset;i++)
508 if (!_disassemble(&last)) break;
509 DEBUG_LastDisassemble = last;
512 while (last.off <= end.addr.off)
513 if (!_disassemble(&last)) break;
514 DEBUG_LastDisassemble = last;
524 DEBUG_AddPath("../../de");
527 fscanf(stdin,"%d %d", &i, &j);
528 DEBUG_DisplaySource("dumpexe.c", i, j);