2 * File source.c - source file handling for internal debugger.
4 * Copyright (C) 1997, Eric Youngdale.
29 struct searchlist * next;
37 struct open_filelist * next;
40 unsigned int * linelist;
43 static struct open_filelist * ofiles;
45 static struct searchlist * listhead;
46 static char DEBUG_current_sourcefile[PATH_MAX];
47 static int DEBUG_start_sourceline = -1;
48 static int DEBUG_end_sourceline = -1;
53 struct searchlist * sl;
55 fprintf(stderr,"Search list :\n");
56 for(sl = listhead; sl; sl = sl->next)
58 fprintf(stderr, "\t%s\n", sl->path);
60 fprintf(stderr, "\n");
64 DEBUG_AddPath(const char * path)
66 struct searchlist * sl;
68 sl = (struct searchlist *) xmalloc(sizeof(struct searchlist));
75 sl->path = xstrdup(path);
82 struct searchlist * sl;
83 struct searchlist * nxt;
85 for(sl = listhead; sl; sl = nxt)
97 DEBUG_DisplaySource(char * sourcefile, int start, int end)
103 struct open_filelist * ol;
107 struct searchlist * sl;
110 char tmppath[PATH_MAX];
113 * First see whether we have the file open already. If so, then
114 * use that, otherwise we have to try and open it.
116 for(ol = ofiles; ol; ol = ol->next)
118 if( strcmp(ol->path, sourcefile) == 0 )
127 * Try again, stripping the path from the opened file.
129 for(ol = ofiles; ol; ol = ol->next)
131 pnt = strrchr(ol->path, '/');
132 if( pnt != NULL && strcmp(pnt + 1, sourcefile) == 0 )
143 * See if this is a DOS style name or not.
145 pnt = strchr(sourcefile, '\\' );
148 pnt = strchr(sourcefile, '/' );
156 * Crapola. We need to try and open the file.
158 status = stat(sourcefile, &statbuf);
161 strcpy(tmppath, sourcefile);
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, pnt);
177 status = stat(tmppath, &statbuf);
187 * Still couldn't find it. Ask user for path to add.
189 fprintf(stderr,"Enter path to file %s: ", sourcefile);
190 fgets(tmppath, sizeof(tmppath), stdin);
192 if( tmppath[strlen(tmppath)-1] == '\n' )
194 tmppath[strlen(tmppath)-1] = '\0';
197 if( tmppath[strlen(tmppath)-1] != '/' )
199 strcat(tmppath, "/");
202 * Now append the base file name.
204 strcat(tmppath, pnt);
206 status = stat(tmppath, &statbuf);
210 * OK, I guess the user doesn't really want to see it
213 ol = (struct open_filelist *) xmalloc(sizeof(*ol));
214 ol->path = xstrdup(sourcefile);
215 ol->real_path = NULL;
220 fprintf(stderr,"Unable to open file %s\n", tmppath);
226 * Create header for file.
228 ol = (struct open_filelist *) xmalloc(sizeof(*ol));
229 ol->path = xstrdup(sourcefile);
230 ol->real_path = xstrdup(tmppath);
234 ol->size = statbuf.st_size;
238 * Now open and map the file.
240 fd = open(tmppath, O_RDONLY);
246 addr = mmap(0, statbuf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
247 if( addr == (char *) -1 )
253 * Now build up the line number mapping table.
257 while(pnt < addr + ol->size )
266 ol->linelist = (unsigned int*) xmalloc(ol->nlines * sizeof(unsigned int) );
270 ol->linelist[nlines++] = 0;
271 while(pnt < addr + ol->size )
275 ol->linelist[nlines++] = pnt - addr;
278 ol->linelist[nlines++] = pnt - addr;
284 * We know what the file is, we just need to reopen it and remap it.
286 fd = open(ol->real_path, O_RDONLY);
292 addr = mmap(0, ol->size, PROT_READ, MAP_PRIVATE, fd, 0);
293 if( addr == (char *) -1 )
300 * All we need to do is to display the source lines here.
303 for(i=start - 1; i <= end - 1; i++)
305 if( i < 0 || i >= ol->nlines - 1)
311 memset(&buffer, 0, sizeof(buffer));
312 if( ol->linelist[i+1] != ol->linelist[i] )
314 memcpy(&buffer, addr + ol->linelist[i],
315 (ol->linelist[i+1] - ol->linelist[i]) - 1);
317 fprintf(stderr,"%d\t%s\n", i + 1, buffer);
320 munmap(addr, ol->size);
328 DEBUG_List(struct list_id * source1, struct list_id * source2,
337 * We need to see what source file we need. Hopefully we only have
338 * one specified, otherwise we might as well punt.
342 && source1->sourcefile != NULL
343 && source2->sourcefile != NULL
344 && strcmp(source1->sourcefile, source2->sourcefile) != 0 )
346 fprintf(stderr, "Ambiguous source file specification.\n");
351 if( source1 != NULL && source1->sourcefile != NULL )
353 sourcefile = source1->sourcefile;
356 if( sourcefile == NULL
358 && source2->sourcefile != NULL )
360 sourcefile = source2->sourcefile;
363 if( sourcefile == NULL )
365 sourcefile = (char *) &DEBUG_current_sourcefile;
368 if( sourcefile == NULL )
370 fprintf(stderr, "No source file specified.\n");
375 * Now figure out the line number range to be listed.
380 if( source1 != NULL )
382 start = source1->line;
385 if( source2 != NULL )
390 if( start == -1 && end == -1 )
394 end = DEBUG_start_sourceline;
399 start = DEBUG_end_sourceline;
403 else if( start == -1 )
413 * Now call this function to do the dirty work.
415 rtn = DEBUG_DisplaySource(sourcefile, start, end);
417 if( sourcefile != (char *) &DEBUG_current_sourcefile )
419 strcpy(DEBUG_current_sourcefile, sourcefile);
421 DEBUG_start_sourceline = start;
422 DEBUG_end_sourceline = end;
431 DEBUG_AddPath("../../de");
434 fscanf(stdin,"%d %d", &i, &j);
435 DEBUG_DisplaySource("dumpexe.c", i, j);