483 lines
9.4 KiB
C
483 lines
9.4 KiB
C
/*
|
|
* File source.c - source file handling for internal debugger.
|
|
*
|
|
* Copyright (C) 1997, Eric Youngdale.
|
|
*
|
|
*/
|
|
|
|
#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>
|
|
#include <unistd.h>
|
|
#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(DBG_CHN_MESG,"Search list :\n");
|
|
for(sl = listhead; sl; sl = sl->next)
|
|
{
|
|
DEBUG_Printf(DBG_CHN_MESG, "\t%s\n", sl->path);
|
|
}
|
|
DEBUG_Printf(DBG_CHN_MESG, "\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
|
|
int
|
|
DEBUG_DisplaySource(char * sourcefile, int start, int end)
|
|
{
|
|
char * addr;
|
|
char buffer[1024];
|
|
int fd;
|
|
int i;
|
|
struct open_filelist * ol;
|
|
int nlines;
|
|
char * basename = NULL;
|
|
char * pnt;
|
|
int rtn;
|
|
struct searchlist * sl;
|
|
struct stat statbuf;
|
|
int 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.
|
|
*/
|
|
for(ol = ofiles; ol; ol = ol->next)
|
|
{
|
|
if( strcmp(ol->path, sourcefile) == 0 )
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
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++;
|
|
|
|
for(ol = ofiles; ol; ol = ol->next)
|
|
{
|
|
if( strcmp(ol->path, basename) == 0 )
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if( ol == NULL )
|
|
{
|
|
/*
|
|
* Crapola. We need to try and open the file.
|
|
*/
|
|
status = stat(sourcefile, &statbuf);
|
|
if( status != -1 )
|
|
{
|
|
strcpy(tmppath, sourcefile);
|
|
}
|
|
else if( (status = stat(basename, &statbuf)) != -1 )
|
|
{
|
|
strcpy(tmppath, basename);
|
|
}
|
|
else
|
|
{
|
|
for(sl = listhead; sl; sl = sl->next)
|
|
{
|
|
strcpy(tmppath, sl->path);
|
|
if( tmppath[strlen(tmppath)-1] != '/' )
|
|
{
|
|
strcat(tmppath, "/");
|
|
}
|
|
/*
|
|
* Now append the base file name.
|
|
*/
|
|
strcat(tmppath, basename);
|
|
|
|
status = stat(tmppath, &statbuf);
|
|
if( status != -1 )
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
if( sl == NULL )
|
|
{
|
|
char zbuf[256];
|
|
/*
|
|
* Still couldn't find it. Ask user for path to add.
|
|
*/
|
|
sprintf(zbuf, "Enter path to file '%s': ", sourcefile);
|
|
DEBUG_ReadLine(zbuf, tmppath, sizeof(tmppath), FALSE);
|
|
|
|
if( tmppath[strlen(tmppath)-1] == '\n' )
|
|
{
|
|
tmppath[strlen(tmppath)-1] = '\0';
|
|
}
|
|
|
|
if( tmppath[strlen(tmppath)-1] != '/' )
|
|
{
|
|
strcat(tmppath, "/");
|
|
}
|
|
/*
|
|
* Now append the base file name.
|
|
*/
|
|
strcat(tmppath, basename);
|
|
|
|
status = stat(tmppath, &statbuf);
|
|
if( status == -1 )
|
|
{
|
|
/*
|
|
* 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(DBG_CHN_MESG,"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 = statbuf.st_size;
|
|
ofiles = ol;
|
|
|
|
/*
|
|
* Now open and map the file.
|
|
*/
|
|
fd = open(tmppath, O_RDONLY);
|
|
if( fd == -1 )
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
addr = mmap(0, statbuf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
|
|
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
|
|
{
|
|
/*
|
|
* We know what the file is, we just need to reopen it and remap it.
|
|
*/
|
|
fd = open(ol->real_path, O_RDONLY);
|
|
if( fd == -1 )
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
addr = mmap(0, ol->size, PROT_READ, MAP_PRIVATE, fd, 0);
|
|
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++)
|
|
{
|
|
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(DBG_CHN_MESG,"%d\t%s\n", i + 1, buffer);
|
|
}
|
|
|
|
munmap(addr, ol->size);
|
|
close(fd);
|
|
|
|
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(DBG_CHN_MESG, "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(DBG_CHN_MESG, "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(DBG_CHN_MESG, ": ");
|
|
if (!DEBUG_READ_MEM_VERBOSE((void*)DEBUG_ToLinear(addr), &ch, sizeof(ch))) {
|
|
DEBUG_Printf(DBG_CHN_MESG, "-- no code --");
|
|
ret = FALSE;
|
|
} else {
|
|
DEBUG_Disasm(addr, TRUE);
|
|
}
|
|
DEBUG_Printf(DBG_CHN_MESG,"\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;
|
|
}
|
|
|