/* List lines of source files for GDB, the GNU debugger.
Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008,
- 2009 Free Software Foundation, Inc.
+ 2009, 2010 Free Software Foundation, Inc.
This file is part of GDB.
#include "ui-out.h"
#include "readline/readline.h"
+#include "psymtab.h"
+
#define OPEN_MODE (O_RDONLY | O_BINARY)
#define FDOPEN_MODE FOPEN_RB
void
set_default_source_symtab_and_line (void)
{
- struct symtab_and_line cursal;
-
if (!have_full_symbols () && !have_partial_symbols ())
error (_("No symbol table is loaded. Use the \"file\" command."));
{
struct symtabs_and_lines sals;
struct symtab_and_line sal;
- struct partial_symtab *ps;
- struct partial_symtab *cs_pst = 0;
struct objfile *ofp;
if (s)
{
const char *name = s->filename;
int len = strlen (name);
+
if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
|| strcmp (name, "<<C++-namespaces>>") == 0)))
{
if (current_source_symtab)
return;
- /* How about the partial symbol tables? */
-
ALL_OBJFILES (ofp)
- {
- for (ps = ofp->psymtabs; ps != NULL; ps = ps->next)
- {
- const char *name = ps->filename;
- int len = strlen (name);
- if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
- || strcmp (name, "<<C++-namespaces>>") == 0)))
- cs_pst = ps;
- }
- }
- if (cs_pst)
- {
- if (cs_pst->readin)
- {
- internal_error (__FILE__, __LINE__,
- _("select_source_symtab: "
- "readin pst found and no symtabs."));
- }
- else
- {
- current_source_pspace = current_program_space;
- current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst);
- }
- }
+ {
+ if (ofp->sf)
+ s = ofp->sf->qf->find_last_source_symtab (ofp);
+ if (s)
+ current_source_symtab = s;
+ }
if (current_source_symtab)
return;
struct program_space *pspace;
struct symtab *s;
struct objfile *objfile;
- struct partial_symtab *pst;
ALL_PSPACES (pspace)
ALL_PSPACE_OBJFILES (pspace, objfile)
}
}
- ALL_OBJFILE_PSYMTABS (objfile, pst)
- {
- if (pst->fullname != NULL)
- {
- xfree (pst->fullname);
- pst->fullname = NULL;
- }
- }
+ if (objfile->sf)
+ objfile->sf->qf->forget_cached_source_info (objfile);
}
last_source_visited = NULL;
if (stat (name, &st) < 0)
{
int save_errno = errno;
+
fprintf_unfiltered (gdb_stderr, "Warning: ");
print_sys_errmsg (name, save_errno);
}
/* The open syscall MODE parameter is not specified. */
gdb_assert ((mode & O_CREAT) == 0);
+ gdb_assert (string != NULL);
+
+ /* A file with an empty name cannot possibly exist. Report a failure
+ without further checking.
+
+ This is an optimization which also defends us against buggy
+ implementations of the "stat" function. For instance, we have
+ noticed that a MinGW debugger built on Windows XP 32bits crashes
+ when the debugger is started with an empty argument. */
+ if (string[0] == '\0')
+ {
+ errno = ENOENT;
+ return -1;
+ }
if (!path)
path = ".";
goto done;
}
+ /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */
+ if (HAS_DRIVE_SPEC (string))
+ string = STRIP_DRIVE_SPEC (string);
+
/* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */
while (IS_DIR_SEPARATOR(string[0]))
string++;
/* Normal file name in path -- just use it. */
strncpy (filename, p, len);
filename[len] = 0;
+
+ /* Don't search $cdir. It's also a magic path like $cwd, but we
+ don't have enough information to expand it. The user *could*
+ have an actual directory named '$cdir' but handling that would
+ be confusing, it would mean different things in different
+ contexts. If the user really has '$cdir' one can use './$cdir'.
+ We can get $cdir when loading scripts. When loading source files
+ $cdir must have already been expanded to the correct value. */
+ if (strcmp (filename, "$cdir") == 0)
+ continue;
}
/* Remove trailing slashes */
IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1])
? "" : SLASH_STRING,
filename, (char *)NULL);
+
*filename_opened = xfullpath (f);
xfree (f);
}
An invalid file descriptor is returned. ( the return value is negative )
FULLNAME is set to NULL. */
-static int
+int
find_and_open_source (const char *filename,
const char *dirname,
char **fullname)
return NULL;
}
-
-/* Finds the fullname that a partial_symtab represents.
-
- If this functions finds the fullname, it will save it in ps->fullname
- and it will also return the value.
-
- If this function fails to find the file that this partial_symtab represents,
- NULL will be returned and ps->fullname will be set to NULL. */
-char *
-psymtab_to_fullname (struct partial_symtab *ps)
-{
- int r;
-
- if (!ps)
- return NULL;
-
- /* Don't check ps->fullname here, the file could have been
- deleted/moved/..., look for it again */
- r = find_and_open_source (ps->filename, ps->dirname, &ps->fullname);
-
- if (r >= 0)
- {
- close (r);
- return ps->fullname;
- }
-
- return NULL;
-}
\f
/* Create and initialize the table S->line_charpos that records
the positions of the lines in the source file, which is assumed
static void
set_substitute_path_command (char *args, int from_tty)
{
- char *from_path, *to_path;
char **argv;
struct substitute_path_rule *rule;
_initialize_source (void)
{
struct cmd_list_element *c;
+
current_source_symtab = 0;
init_source_path ();
add_com ("reverse-search", class_files, reverse_search_command, _("\
Search backward for regular expression (see regex(3)) from last line listed.\n\
The matching line number is also stored as the value of \"$_\"."));
+ add_com_alias ("rev", "reverse-search", class_files, 1);
if (xdb_commands)
{
projects / binutils-gdb.git / blobdiff