| /* |
| * File source.c - source file handling for internal debugger. |
| * |
| * Copyright (C) 1997, Eric Youngdale. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include "config.h" |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include <sys/types.h> |
| #ifdef HAVE_SYS_MMAN_H |
| #include <sys/mman.h> |
| #endif |
| #include <fcntl.h> |
| #include <sys/stat.h> |
| #include <limits.h> |
| #include <string.h> |
| #ifdef HAVE_UNISTD_H |
| # include <unistd.h> |
| #endif |
| #ifndef PATH_MAX |
| #define PATH_MAX MAX_PATH |
| #endif |
| |
| #include "debugger.h" |
| |
| struct searchlist |
| { |
| char * path; |
| struct searchlist * next; |
| }; |
| |
| |
| struct open_filelist |
| { |
| char * path; |
| char * real_path; |
| struct open_filelist * next; |
| unsigned int size; |
| signed int nlines; |
| unsigned int * linelist; |
| }; |
| |
| static struct open_filelist * ofiles; |
| |
| static struct searchlist * listhead; |
| static char DEBUG_current_sourcefile[PATH_MAX]; |
| static int DEBUG_start_sourceline = -1; |
| static int DEBUG_end_sourceline = -1; |
| |
| void |
| DEBUG_ShowDir(void) |
| { |
| struct searchlist * sl; |
| |
| DEBUG_Printf("Search list :\n"); |
| for(sl = listhead; sl; sl = sl->next) |
| { |
| DEBUG_Printf("\t%s\n", sl->path); |
| } |
| DEBUG_Printf("\n"); |
| } |
| |
| void |
| DEBUG_AddPath(const char * path) |
| { |
| struct searchlist * sl; |
| |
| sl = (struct searchlist *) DBG_alloc(sizeof(struct searchlist)); |
| if( sl == NULL ) |
| { |
| return; |
| } |
| |
| sl->next = listhead; |
| sl->path = DBG_strdup(path); |
| listhead = sl; |
| } |
| |
| void |
| DEBUG_NukePath(void) |
| { |
| struct searchlist * sl; |
| struct searchlist * nxt; |
| |
| for(sl = listhead; sl; sl = nxt) |
| { |
| nxt = sl->next; |
| DBG_free(sl->path); |
| DBG_free(sl); |
| } |
| |
| listhead = NULL; |
| } |
| |
| static void* DEBUG_MapFile(const char* name, HANDLE* hMap, unsigned* size) |
| { |
| HANDLE hFile; |
| |
| hFile = CreateFile(name, GENERIC_READ, FILE_SHARE_READ, NULL, |
| OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
| if (hFile == INVALID_HANDLE_VALUE) return (void*)-1; |
| if (size != NULL && (*size = GetFileSize(hFile, NULL)) == -1) return (void*)-1; |
| *hMap = CreateFileMapping(hFile, NULL, PAGE_READONLY, 0, 0, NULL); |
| CloseHandle(hFile); |
| if (!*hMap) return (void*)-1; |
| return MapViewOfFile(*hMap, FILE_MAP_READ, 0, 0, 0); |
| } |
| |
| static void DEBUG_UnmapFile(void* addr, HANDLE hMap) |
| { |
| UnmapViewOfFile(addr); |
| CloseHandle(hMap); |
| } |
| |
| static struct open_filelist* DEBUG_SearchOpenFile(const char* name) |
| { |
| struct open_filelist* ol; |
| |
| for (ol = ofiles; ol; ol = ol->next) |
| { |
| if (strcmp(ol->path, name) == 0) break; |
| } |
| return ol; |
| } |
| |
| static |
| int |
| DEBUG_DisplaySource(char * sourcefile, int start, int end) |
| { |
| char* addr; |
| int i; |
| struct open_filelist* ol; |
| int nlines; |
| char* basename = NULL; |
| char* pnt; |
| int rtn; |
| struct searchlist* sl; |
| HANDLE hMap; |
| DWORD status; |
| char tmppath[PATH_MAX]; |
| |
| /* |
| * First see whether we have the file open already. If so, then |
| * use that, otherwise we have to try and open it. |
| */ |
| ol = DEBUG_SearchOpenFile(sourcefile); |
| |
| if ( ol == NULL ) |
| { |
| /* |
| * Try again, stripping the path from the opened file. |
| */ |
| basename = strrchr(sourcefile, '\\' ); |
| if ( !basename ) |
| basename = strrchr(sourcefile, '/' ); |
| if ( !basename ) |
| basename = sourcefile; |
| else |
| basename++; |
| |
| ol = DEBUG_SearchOpenFile(basename); |
| } |
| |
| if ( ol == NULL ) |
| { |
| /* |
| * Crapola. We need to try and open the file. |
| */ |
| status = GetFileAttributes(sourcefile); |
| if ( status != INVALID_FILE_ATTRIBUTES ) |
| { |
| strcpy(tmppath, sourcefile); |
| } |
| else if ( (status = GetFileAttributes(basename)) != INVALID_FILE_ATTRIBUTES ) |
| { |
| strcpy(tmppath, basename); |
| } |
| else |
| { |
| for (sl = listhead; sl; sl = sl->next) |
| { |
| strcpy(tmppath, sl->path); |
| if ( tmppath[strlen(tmppath)-1] != '/' && tmppath[strlen(tmppath)-1] != '\\' ) |
| { |
| strcat(tmppath, "/"); |
| } |
| /* |
| * Now append the base file name. |
| */ |
| strcat(tmppath, basename); |
| |
| status = GetFileAttributes(tmppath); |
| if ( status != INVALID_FILE_ATTRIBUTES ) break; |
| } |
| |
| if ( sl == NULL ) |
| { |
| if (DEBUG_InteractiveP) |
| { |
| char zbuf[256]; |
| /* |
| * Still couldn't find it. Ask user for path to add. |
| */ |
| snprintf(zbuf, sizeof(zbuf), "Enter path to file '%s': ", sourcefile); |
| DEBUG_ReadLine(zbuf, tmppath, sizeof(tmppath)); |
| |
| if ( tmppath[strlen(tmppath)-1] != '/' ) |
| { |
| strcat(tmppath, "/"); |
| } |
| /* |
| * Now append the base file name. |
| */ |
| strcat(tmppath, basename); |
| |
| status = GetFileAttributes(tmppath); |
| } |
| else |
| { |
| status = INVALID_FILE_ATTRIBUTES; |
| strcpy(tmppath, sourcefile); |
| } |
| |
| if ( status == INVALID_FILE_ATTRIBUTES ) |
| { |
| /* |
| * OK, I guess the user doesn't really want to see it |
| * after all. |
| */ |
| ol = (struct open_filelist *) DBG_alloc(sizeof(*ol)); |
| ol->path = DBG_strdup(sourcefile); |
| ol->real_path = NULL; |
| ol->next = ofiles; |
| ol->nlines = 0; |
| ol->linelist = NULL; |
| ofiles = ol; |
| DEBUG_Printf("Unable to open file %s\n", tmppath); |
| return FALSE; |
| } |
| } |
| } |
| /* |
| * Create header for file. |
| */ |
| ol = (struct open_filelist *) DBG_alloc(sizeof(*ol)); |
| ol->path = DBG_strdup(sourcefile); |
| ol->real_path = DBG_strdup(tmppath); |
| ol->next = ofiles; |
| ol->nlines = 0; |
| ol->linelist = NULL; |
| ol->size = 0; |
| ofiles = ol; |
| |
| addr = DEBUG_MapFile(tmppath, &hMap, &ol->size); |
| if ( addr == (char *) -1 ) |
| { |
| return FALSE; |
| } |
| /* |
| * Now build up the line number mapping table. |
| */ |
| ol->nlines = 1; |
| pnt = addr; |
| while (pnt < addr + ol->size ) |
| { |
| if ( *pnt++ == '\n' ) |
| { |
| ol->nlines++; |
| } |
| } |
| |
| ol->nlines++; |
| ol->linelist = (unsigned int*) DBG_alloc( ol->nlines * sizeof(unsigned int) ); |
| |
| nlines = 0; |
| pnt = addr; |
| ol->linelist[nlines++] = 0; |
| while(pnt < addr + ol->size ) |
| { |
| if( *pnt++ == '\n' ) |
| { |
| ol->linelist[nlines++] = pnt - addr; |
| } |
| } |
| ol->linelist[nlines++] = pnt - addr; |
| |
| } |
| else |
| { |
| addr = DEBUG_MapFile(ol->real_path, &hMap, NULL); |
| if ( addr == (char *) -1 ) |
| { |
| return FALSE; |
| } |
| } |
| /* |
| * All we need to do is to display the source lines here. |
| */ |
| rtn = FALSE; |
| for (i = start - 1; i <= end - 1; i++) |
| { |
| char buffer[1024]; |
| |
| if (i < 0 || i >= ol->nlines - 1) |
| { |
| continue; |
| } |
| |
| rtn = TRUE; |
| memset(&buffer, 0, sizeof(buffer)); |
| if ( ol->linelist[i+1] != ol->linelist[i] ) |
| { |
| memcpy(&buffer, addr + ol->linelist[i], |
| (ol->linelist[i+1] - ol->linelist[i]) - 1); |
| } |
| DEBUG_Printf("%d\t%s\n", i + 1, buffer); |
| } |
| |
| DEBUG_UnmapFile(addr, hMap); |
| return rtn; |
| } |
| |
| void |
| DEBUG_List(struct list_id * source1, struct list_id * source2, |
| int delta) |
| { |
| int end; |
| int rtn; |
| int start; |
| char * sourcefile; |
| |
| /* |
| * We need to see what source file we need. Hopefully we only have |
| * one specified, otherwise we might as well punt. |
| */ |
| if( source1 != NULL |
| && source2 != NULL |
| && source1->sourcefile != NULL |
| && source2->sourcefile != NULL |
| && strcmp(source1->sourcefile, source2->sourcefile) != 0 ) |
| { |
| DEBUG_Printf("Ambiguous source file specification.\n"); |
| return; |
| } |
| |
| sourcefile = NULL; |
| if( source1 != NULL && source1->sourcefile != NULL ) |
| { |
| sourcefile = source1->sourcefile; |
| } |
| |
| if( sourcefile == NULL |
| && source2 != NULL |
| && source2->sourcefile != NULL ) |
| { |
| sourcefile = source2->sourcefile; |
| } |
| |
| if( sourcefile == NULL ) |
| { |
| sourcefile = (char *) &DEBUG_current_sourcefile; |
| } |
| |
| if( sourcefile == NULL ) |
| { |
| DEBUG_Printf("No source file specified.\n"); |
| return; |
| } |
| |
| /* |
| * Now figure out the line number range to be listed. |
| */ |
| start = -1; |
| end = -1; |
| |
| if( source1 != NULL ) |
| { |
| start = source1->line; |
| } |
| |
| if( source2 != NULL ) |
| { |
| end = source2->line; |
| } |
| |
| if( start == -1 && end == -1 ) |
| { |
| if( delta < 0 ) |
| { |
| end = DEBUG_start_sourceline; |
| start = end + delta; |
| } |
| else |
| { |
| start = DEBUG_end_sourceline; |
| end = start + delta; |
| } |
| } |
| else if( start == -1 ) |
| { |
| start = end + delta; |
| } |
| else if (end == -1) |
| { |
| end = start + delta; |
| } |
| |
| /* |
| * Now call this function to do the dirty work. |
| */ |
| rtn = DEBUG_DisplaySource(sourcefile, start, end); |
| |
| if( sourcefile != (char *) &DEBUG_current_sourcefile ) |
| { |
| strcpy(DEBUG_current_sourcefile, sourcefile); |
| } |
| DEBUG_start_sourceline = start; |
| DEBUG_end_sourceline = end; |
| } |
| |
| DBG_ADDR DEBUG_LastDisassemble={0,0}; |
| |
| BOOL DEBUG_DisassembleInstruction(DBG_ADDR *addr) |
| { |
| char ch; |
| BOOL ret = TRUE; |
| |
| DEBUG_PrintAddress(addr, DEBUG_CurrThread->dbg_mode, TRUE); |
| DEBUG_Printf(": "); |
| if (!DEBUG_READ_MEM_VERBOSE((void*)DEBUG_ToLinear(addr), &ch, sizeof(ch))) { |
| DEBUG_Printf("-- no code --"); |
| ret = FALSE; |
| } else { |
| DEBUG_Disasm(addr, TRUE); |
| } |
| DEBUG_Printf("\n"); |
| return ret; |
| } |
| |
| void |
| DEBUG_Disassemble(const DBG_VALUE *xstart,const DBG_VALUE *xend,int offset) |
| { |
| int i; |
| DBG_ADDR last; |
| DBG_VALUE end,start; |
| |
| if (xstart) { |
| start = *xstart; |
| DEBUG_GrabAddress(&start, TRUE); |
| } |
| if (xend) { |
| end = *xend; |
| DEBUG_GrabAddress(&end, TRUE); |
| } |
| if (!xstart && !xend) { |
| last = DEBUG_LastDisassemble; |
| if (!last.seg && !last.off) |
| DEBUG_GetCurrentAddress( &last ); |
| |
| for (i=0;i<offset;i++) |
| if (!DEBUG_DisassembleInstruction(&last)) break; |
| DEBUG_LastDisassemble = last; |
| return; |
| } |
| last = start.addr; |
| if (!xend) { |
| for (i=0;i<offset;i++) |
| if (!DEBUG_DisassembleInstruction(&last)) break; |
| DEBUG_LastDisassemble = last; |
| return; |
| } |
| while (last.off <= end.addr.off) |
| if (!DEBUG_DisassembleInstruction(&last)) break; |
| DEBUG_LastDisassemble = last; |
| return; |
| } |
