2 * File source.c - source file handling for internal debugger.
4 * Copyright (C) 1997, Eric Youngdale.
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.
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.
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
31 struct open_file_list* next;
34 unsigned int* linelist;
37 void source_show_path(void)
42 dbg_printf("Search list:\n");
43 for (ptr = dbg_curr_process->search_path; ptr; ptr = next)
45 next = strchr(ptr, ';');
47 dbg_printf("\t%.*s\n", (int)(next++ - ptr), ptr);
49 dbg_printf("\t%s\n", ptr);
54 void source_add_path(const char* path)
59 size = strlen(path) + 1;
60 if (dbg_curr_process->search_path)
62 unsigned pos = strlen(dbg_curr_process->search_path) + 1;
63 new = HeapReAlloc(GetProcessHeap(), 0, dbg_curr_process->search_path, pos + size);
66 strcpy(&new[pos], path);
70 new = HeapAlloc(GetProcessHeap(), 0, size);
74 dbg_curr_process->search_path = new;
77 void source_nuke_path(struct dbg_process* p)
79 HeapFree(GetProcessHeap(), 0, p->search_path);
80 p->search_path = NULL;
83 static void* source_map_file(const char* name, HANDLE* hMap, unsigned* size)
87 hFile = CreateFileA(name, GENERIC_READ, FILE_SHARE_READ, NULL,
88 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
89 if (hFile == INVALID_HANDLE_VALUE) return (void*)-1;
90 if (size != NULL && (*size = GetFileSize(hFile, NULL)) == -1) return (void*)-1;
91 *hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL);
93 if (!*hMap) return (void*)-1;
94 return MapViewOfFile(*hMap, FILE_MAP_READ, 0, 0, 0);
97 static void source_unmap_file(void* addr, HANDLE hMap)
99 UnmapViewOfFile(addr);
103 static struct open_file_list* source_search_open_file(const char* name)
105 struct open_file_list* ol;
107 for (ol = dbg_curr_process->source_ofiles; ol; ol = ol->next)
109 if (strcmp(ol->path, name) == 0) break;
114 static BOOL source_locate_file(const char* srcfile, char* path)
118 if (GetFileAttributesA(srcfile) != INVALID_FILE_ATTRIBUTES)
120 strcpy(path, srcfile);
123 else if (dbg_curr_process->search_path)
130 while (*spath && *spath != '/' && *spath != '\\') spath++;
133 found = SearchPathA(dbg_curr_process->search_path, spath, NULL, MAX_PATH, path, NULL);
139 static struct open_file_list* source_add_file(const char* name, const char* realpath)
141 struct open_file_list* ol;
145 nlen = strlen(name) + 1;
146 if (realpath) sz += strlen(realpath) + 1;
147 ol = HeapAlloc(GetProcessHeap(), 0, sz + nlen);
148 if (!ol) return NULL;
149 strcpy(ol->path = (char*)(ol + 1), name);
151 strcpy(ol->real_path = ol->path + nlen, realpath);
153 ol->real_path = NULL;
154 ol->next = dbg_curr_process->source_ofiles;
158 return dbg_curr_process->source_ofiles = ol;
161 static int source_display(const char* sourcefile, int start, int end)
165 struct open_file_list* ol;
167 const char* basename = NULL;
171 char tmppath[MAX_PATH];
174 * First see whether we have the file open already. If so, then
175 * use that, otherwise we have to try and open it.
177 ol = source_search_open_file(sourcefile);
182 * Try again, stripping the path from the opened file.
184 basename = strrchr(sourcefile, '\\');
185 if (!basename) basename = strrchr(sourcefile, '/');
186 if (!basename) basename = sourcefile;
189 ol = source_search_open_file(basename);
195 * Crapola. We need to try and open the file.
197 if (!source_locate_file(sourcefile, tmppath))
199 if (dbg_interactiveP)
203 * Still couldn't find it. Ask user for path to add.
205 snprintf(zbuf, sizeof(zbuf), "Enter path to file '%s': ", sourcefile);
206 input_read_line(zbuf, tmppath, sizeof(tmppath));
208 if (tmppath[strlen(tmppath) - 1] != '/')
210 strcat(tmppath, "/");
213 * Now append the base file name.
215 strcat(tmppath, basename);
217 else tmppath[0] = '\0';
219 if (GetFileAttributesA(tmppath) == INVALID_FILE_ATTRIBUTES)
222 * OK, I guess the user doesn't really want to see it
225 ol = source_add_file(sourcefile, NULL);
226 dbg_printf("Unable to open file '%s'\n", tmppath);
231 * Create header for file.
233 ol = source_add_file(sourcefile, tmppath);
235 addr = source_map_file(tmppath, &hMap, &ol->size);
236 if (addr == (char*)-1) return FALSE;
238 * Now build up the line number mapping table.
242 while (pnt < addr + ol->size)
244 if (*pnt++ == '\n') ol->nlines++;
248 ol->linelist = HeapAlloc(GetProcessHeap(), 0, ol->nlines * sizeof(unsigned int));
252 ol->linelist[nlines++] = 0;
253 while (pnt < addr + ol->size)
255 if (*pnt++ == '\n') ol->linelist[nlines++] = pnt - addr;
257 ol->linelist[nlines++] = pnt - addr;
262 addr = source_map_file(ol->real_path, &hMap, NULL);
263 if (addr == (char*)-1) return FALSE;
266 * All we need to do is to display the source lines here.
269 for (i = start - 1; i <= end - 1; i++)
273 if (i < 0 || i >= ol->nlines - 1) continue;
276 memset(&buffer, 0, sizeof(buffer));
277 if (ol->linelist[i+1] != ol->linelist[i])
279 memcpy(&buffer, addr + ol->linelist[i],
280 (ol->linelist[i+1] - ol->linelist[i]) - 1);
282 dbg_printf("%d\t%s\n", i + 1, buffer);
285 source_unmap_file(addr, hMap);
289 void source_list(IMAGEHLP_LINE64* src1, IMAGEHLP_LINE64* src2, int delta)
293 const char* sourcefile;
296 * We need to see what source file we need. Hopefully we only have
297 * one specified, otherwise we might as well punt.
299 if (src1 && src2 && src1->FileName && src2->FileName &&
300 strcmp(src1->FileName, src2->FileName) != 0)
302 dbg_printf("Ambiguous source file specification.\n");
307 if (src1 && src1->FileName) sourcefile = src1->FileName;
308 if (!sourcefile && src2 && src2->FileName) sourcefile = src2->FileName;
309 if (!sourcefile) sourcefile = dbg_curr_process->source_current_file;
312 * Now figure out the line number range to be listed.
316 if (src1) start = src1->LineNumber;
317 if (src2) end = src2->LineNumber;
318 if (start == -1 && end == -1)
322 end = dbg_curr_process->source_start_line;
327 start = dbg_curr_process->source_end_line;
331 else if (start == -1) start = end + delta;
332 else if (end == -1) end = start + delta;
335 * Now call this function to do the dirty work.
337 source_display(sourcefile, start, end);
339 if (sourcefile != dbg_curr_process->source_current_file)
340 strcpy(dbg_curr_process->source_current_file, sourcefile);
341 dbg_curr_process->source_start_line = start;
342 dbg_curr_process->source_end_line = end;
345 void source_list_from_addr(const ADDRESS64* addr, int nlines)
353 memory_get_current_pc(&la);
357 il.SizeOfStruct = sizeof(il);
358 if (SymGetLineFromAddr64(dbg_curr_process->handle,
359 (DWORD_PTR)memory_to_linear_addr(addr),
361 source_list(&il, NULL, nlines);
364 void source_free_files(struct dbg_process* p)
366 struct open_file_list* ofile;
367 struct open_file_list* ofile_next;
369 for (ofile = p->source_ofiles; ofile; ofile = ofile_next)
371 ofile_next = ofile->next;
372 HeapFree(GetProcessHeap(), 0, ofile->linelist);
373 HeapFree(GetProcessHeap(), 0, ofile);