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376 lines
10 KiB
C
376 lines
10 KiB
C
/*
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* File source.c - source file handling for internal debugger.
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*
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* Copyright (C) 1997, Eric Youngdale.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#ifndef PATH_MAX
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#define PATH_MAX MAX_PATH
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#endif
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#include "debugger.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(winedbg);
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struct search_list
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{
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char* path;
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struct search_list* next;
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};
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struct open_file_list
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{
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char* path;
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char* real_path;
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struct open_file_list* next;
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unsigned int size;
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signed int nlines;
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unsigned int* linelist;
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};
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static struct open_file_list* source_ofiles;
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static struct search_list* source_list_head;
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static char source_current_file[PATH_MAX];
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static int source_start_line = -1;
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static int source_end_line = -1;
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void source_show_path(void)
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{
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struct search_list* sl;
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dbg_printf("Search list:\n");
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for (sl = source_list_head; sl; sl = sl->next) dbg_printf("\t%s\n", sl->path);
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dbg_printf("\n");
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}
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void source_add_path(const char* path)
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{
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struct search_list* sl;
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if (!(sl = HeapAlloc(GetProcessHeap(), 0, sizeof(struct search_list))))
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return;
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sl->next = source_list_head;
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sl->path = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(path) + 1), path);
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source_list_head = sl;
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}
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void source_nuke_path(void)
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{
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struct search_list* sl;
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struct search_list* nxt;
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for (sl = source_list_head; sl; sl = nxt)
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{
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nxt = sl->next;
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HeapFree(GetProcessHeap(), 0, sl->path);
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HeapFree(GetProcessHeap(), 0, sl);
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}
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source_list_head = NULL;
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}
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static void* source_map_file(const char* name, HANDLE* hMap, unsigned* size)
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{
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HANDLE hFile;
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hFile = CreateFile(name, GENERIC_READ, FILE_SHARE_READ, NULL,
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OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
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if (hFile == INVALID_HANDLE_VALUE) return (void*)-1;
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if (size != NULL && (*size = GetFileSize(hFile, NULL)) == -1) return (void*)-1;
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*hMap = CreateFileMapping(hFile, NULL, PAGE_READONLY, 0, 0, NULL);
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CloseHandle(hFile);
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if (!*hMap) return (void*)-1;
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return MapViewOfFile(*hMap, FILE_MAP_READ, 0, 0, 0);
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}
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static void source_unmap_file(void* addr, HANDLE hMap)
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{
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UnmapViewOfFile(addr);
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CloseHandle(hMap);
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}
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static struct open_file_list* source_search_open_file(const char* name)
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{
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struct open_file_list* ol;
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for (ol = source_ofiles; ol; ol = ol->next)
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{
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if (strcmp(ol->path, name) == 0) break;
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}
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return ol;
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}
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static int source_display(const char* sourcefile, int start, int end)
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{
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char* addr;
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int i;
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struct open_file_list* ol;
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int nlines;
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const char* basename = NULL;
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char* pnt;
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int rtn;
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struct search_list* sl;
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HANDLE hMap;
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DWORD status;
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char tmppath[PATH_MAX];
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/*
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* First see whether we have the file open already. If so, then
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* use that, otherwise we have to try and open it.
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*/
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ol = source_search_open_file(sourcefile);
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if (ol == NULL)
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{
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/*
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* Try again, stripping the path from the opened file.
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*/
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basename = strrchr(sourcefile, '\\');
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if (!basename) basename = strrchr(sourcefile, '/');
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if (!basename) basename = sourcefile;
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else basename++;
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ol = source_search_open_file(basename);
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}
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if (ol == NULL)
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{
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/*
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* Crapola. We need to try and open the file.
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*/
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status = GetFileAttributes(sourcefile);
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if (status != INVALID_FILE_ATTRIBUTES)
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{
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strcpy(tmppath, sourcefile);
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}
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else if ((status = GetFileAttributes(basename)) != INVALID_FILE_ATTRIBUTES)
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{
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strcpy(tmppath, basename);
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}
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else
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{
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for (sl = source_list_head; sl; sl = sl->next)
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{
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strcpy(tmppath, sl->path);
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if (tmppath[strlen(tmppath) - 1] != '/' && tmppath[strlen(tmppath) - 1] != '\\')
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{
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strcat(tmppath, "/");
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}
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/*
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* Now append the base file name.
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*/
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strcat(tmppath, basename);
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status = GetFileAttributes(tmppath);
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if (status != INVALID_FILE_ATTRIBUTES) break;
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}
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if (sl == NULL)
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{
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if (dbg_interactiveP)
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{
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char zbuf[256];
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/*
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* Still couldn't find it. Ask user for path to add.
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*/
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snprintf(zbuf, sizeof(zbuf), "Enter path to file '%s': ", sourcefile);
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input_read_line(zbuf, tmppath, sizeof(tmppath));
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if (tmppath[strlen(tmppath) - 1] != '/')
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{
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strcat(tmppath, "/");
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}
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/*
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* Now append the base file name.
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*/
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strcat(tmppath, basename);
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status = GetFileAttributes(tmppath);
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}
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else
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{
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status = INVALID_FILE_ATTRIBUTES;
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strcpy(tmppath, sourcefile);
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}
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if (status == INVALID_FILE_ATTRIBUTES)
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{
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/*
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* OK, I guess the user doesn't really want to see it
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* after all.
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*/
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ol = HeapAlloc(GetProcessHeap(), 0, sizeof(*ol));
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ol->path = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(sourcefile) + 1), sourcefile);
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ol->real_path = NULL;
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ol->next = source_ofiles;
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ol->nlines = 0;
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ol->linelist = NULL;
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source_ofiles = ol;
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dbg_printf("Unable to open file '%s'\n", tmppath);
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return FALSE;
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}
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}
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}
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/*
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* Create header for file.
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*/
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ol = HeapAlloc(GetProcessHeap(), 0, sizeof(*ol));
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ol->path = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(sourcefile) + 1), sourcefile);
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ol->real_path = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(tmppath) + 1), tmppath);
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ol->next = source_ofiles;
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ol->nlines = 0;
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ol->linelist = NULL;
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ol->size = 0;
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source_ofiles = ol;
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addr = source_map_file(tmppath, &hMap, &ol->size);
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if (addr == (char*)-1) return FALSE;
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/*
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* Now build up the line number mapping table.
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*/
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ol->nlines = 1;
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pnt = addr;
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while (pnt < addr + ol->size)
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{
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if (*pnt++ == '\n') ol->nlines++;
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}
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ol->nlines++;
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ol->linelist = HeapAlloc(GetProcessHeap(), 0, ol->nlines * sizeof(unsigned int));
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nlines = 0;
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pnt = addr;
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ol->linelist[nlines++] = 0;
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while (pnt < addr + ol->size)
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{
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if (*pnt++ == '\n') ol->linelist[nlines++] = pnt - addr;
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}
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ol->linelist[nlines++] = pnt - addr;
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}
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else
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{
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addr = source_map_file(ol->real_path, &hMap, NULL);
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if (addr == (char*)-1) return FALSE;
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}
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/*
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* All we need to do is to display the source lines here.
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*/
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rtn = FALSE;
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for (i = start - 1; i <= end - 1; i++)
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{
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char buffer[1024];
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if (i < 0 || i >= ol->nlines - 1) continue;
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rtn = TRUE;
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memset(&buffer, 0, sizeof(buffer));
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if (ol->linelist[i+1] != ol->linelist[i])
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{
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memcpy(&buffer, addr + ol->linelist[i],
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(ol->linelist[i+1] - ol->linelist[i]) - 1);
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}
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dbg_printf("%d\t%s\n", i + 1, buffer);
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}
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source_unmap_file(addr, hMap);
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return rtn;
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}
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void source_list(IMAGEHLP_LINE* src1, IMAGEHLP_LINE* src2, int delta)
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{
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int end;
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int start;
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const char* sourcefile;
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/*
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* We need to see what source file we need. Hopefully we only have
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* one specified, otherwise we might as well punt.
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*/
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if (src1 && src2 && src1->FileName && src2->FileName &&
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strcmp(src1->FileName, src2->FileName) != 0)
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{
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dbg_printf("Ambiguous source file specification.\n");
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return;
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}
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sourcefile = NULL;
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if (src1 && src1->FileName) sourcefile = src1->FileName;
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if (!sourcefile && src2 && src2->FileName) sourcefile = src2->FileName;
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if (!sourcefile) sourcefile = source_current_file;
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/*
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* Now figure out the line number range to be listed.
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*/
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start = end = -1;
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if (src1) start = src1->LineNumber;
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if (src2) end = src2->LineNumber;
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if (start == -1 && end == -1)
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{
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if (delta < 0)
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{
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end = source_start_line;
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start = end + delta;
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}
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else
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{
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start = source_end_line;
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end = start + delta;
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}
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}
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else if (start == -1) start = end + delta;
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else if (end == -1) end = start + delta;
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/*
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* Now call this function to do the dirty work.
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*/
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source_display(sourcefile, start, end);
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if (sourcefile != source_current_file)
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strcpy(source_current_file, sourcefile);
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source_start_line = start;
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source_end_line = end;
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}
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void source_list_from_addr(const ADDRESS* addr, int nlines)
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{
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IMAGEHLP_LINE il;
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ADDRESS la;
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DWORD disp;
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if (!addr)
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{
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memory_get_current_pc(&la);
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addr = &la;
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}
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il.SizeOfStruct = sizeof(il);
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if (SymGetLineFromAddr(dbg_curr_process->handle,
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(unsigned long)memory_to_linear_addr(addr),
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&disp, &il))
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source_list(&il, NULL, nlines);
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}
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