/* List lines of source files for GDB, the GNU debugger.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
+ 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
+ Free Software Foundation, Inc.
This file is part of GDB.
#include "linespec.h"
#include "filenames.h" /* for DOSish file names */
#include "completer.h"
-#ifdef UI_OUT
#include "ui-out.h"
-#endif
+#include <readline/readline.h>
#ifdef CRLF_SOURCE_FILES
static void line_info (char *, int);
-static void list_command (char *, int);
-
static void ambiguous_line_spec (struct symtabs_and_lines *);
static void source_info (char *, int);
/* Symtab of default file for listing lines of. */
-struct symtab *current_source_symtab;
+static struct symtab *current_source_symtab;
/* Default next line to list. */
-int current_source_line;
+static int current_source_line;
/* Default number of lines to print with commands like "list".
This is based on guessing how many long (i.e. more than chars_per_line
static struct symtab *last_source_visited = NULL;
static int last_source_error = 0;
\f
+/* Return the first line listed by print_source_lines.
+ Used by command interpreters to request listing from
+ a previous point. */
+
+int
+get_first_line_listed (void)
+{
+ return first_line_listed;
+}
+
+/* Return the default number of lines to print with commands like the
+ cli "list". The caller of print_source_lines must use this to
+ calculate the end line and use it in the call to print_source_lines
+ as it does not automatically use this value. */
+
+int
+get_lines_to_list (void)
+{
+ return lines_to_list;
+}
+
+/* Return the current source file for listing and next line to list.
+ NOTE: The returned sal pc and end fields are not valid. */
+
+struct symtab_and_line
+get_current_source_symtab_and_line (void)
+{
+ struct symtab_and_line cursal;
+
+ cursal.symtab = current_source_symtab;
+ cursal.line = current_source_line;
+ cursal.pc = 0;
+ cursal.end = 0;
+
+ return cursal;
+}
+
+/* If the current source file for listing is not set, try and get a default.
+ Usually called before get_current_source_symtab_and_line() is called.
+ It may err out if a default cannot be determined.
+ We must be cautious about where it is called, as it can recurse as the
+ process of determining a new default may call the caller!
+ Use get_current_source_symtab_and_line only to get whatever
+ we have without erroring out or trying to get a default. */
+
+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.");
+
+ /* Pull in a current source symtab if necessary */
+ if (current_source_symtab == 0)
+ select_source_symtab (0);
+}
+
+/* Return the current default file for listing and next line to list
+ (the returned sal pc and end fields are not valid.)
+ and set the current default to whatever is in SAL.
+ NOTE: The returned sal pc and end fields are not valid. */
+
+struct symtab_and_line
+set_current_source_symtab_and_line (const struct symtab_and_line *sal)
+{
+ struct symtab_and_line cursal;
+
+ cursal.symtab = current_source_symtab;
+ cursal.line = current_source_line;
+
+ current_source_symtab = sal->symtab;
+ current_source_line = sal->line;
+ cursal.pc = 0;
+ cursal.end = 0;
+
+ return cursal;
+}
+
+/* Reset any information stored about a default file and line to print. */
+
+void
+clear_current_source_symtab_and_line (void)
+{
+ current_source_symtab = 0;
+ current_source_line = 0;
+}
/* Set the source file default for the "list" command to be S.
before we need to would make things slower than necessary. */
void
-select_source_symtab (register struct symtab *s)
+select_source_symtab (struct symtab *s)
{
struct symtabs_and_lines sals;
struct symtab_and_line sal;
/* Make the default place to list be the function `main'
if one exists. */
- if (lookup_symbol (main_name (), 0, VAR_NAMESPACE, 0, NULL))
+ if (lookup_symbol (main_name (), 0, VAR_DOMAIN, 0, NULL))
{
sals = decode_line_spec (main_name (), 1);
sal = sals.sals[0];
{
char *name = s->filename;
int len = strlen (name);
- if (!(len > 2 && (STREQ (&name[len - 2], ".h"))))
+ if (!(len > 2 && (DEPRECATED_STREQ (&name[len - 2], ".h"))))
{
current_source_symtab = s;
}
{
char *name = ps->filename;
int len = strlen (name);
- if (!(len > 2 && (STREQ (&name[len - 2], ".h"))))
+ if (!(len > 2 && (DEPRECATED_STREQ (&name[len - 2], ".h"))))
{
cs_pst = ps;
}
void
forget_cached_source_info (void)
{
- register struct symtab *s;
- register struct objfile *objfile;
+ struct symtab *s;
+ struct objfile *objfile;
+ struct partial_symtab *pst;
for (objfile = object_files; objfile != NULL; objfile = objfile->next)
{
s->fullname = NULL;
}
}
+
+ ALL_OBJFILE_PSYMTABS (objfile, pst)
+ {
+ if (pst->fullname != NULL)
+ {
+ xfree (pst->fullname);
+ pst->fullname = NULL;
+ }
+ }
}
}
forget_cached_source_info ();
}
+void
+init_last_source_visited (void)
+{
+ last_source_visited = NULL;
+}
+
/* Add zero or more directories to the front of the source path. */
void
void
mod_path (char *dirname, char **which_path)
+{
+ add_path (dirname, which_path, 1);
+}
+
+/* Workhorse of mod_path. Takes an extra argument to determine
+ if dirname should be parsed for separators that indicate multiple
+ directories. This allows for interfaces that pre-parse the dirname
+ and allow specification of traditional separator characters such
+ as space or tab. */
+
+void
+add_path (char *dirname, char **which_path, int parse_separators)
{
char *old = *which_path;
int prefix = 0;
do
{
char *name = dirname;
- register char *p;
+ char *p;
struct stat st;
{
- char *separator = strchr (name, DIRNAME_SEPARATOR);
- char *space = strchr (name, ' ');
- char *tab = strchr (name, '\t');
+ char *separator = NULL;
+ char *space = NULL;
+ char *tab = NULL;
+
+ if (parse_separators)
+ {
+ separator = strchr (name, DIRNAME_SEPARATOR);
+ space = strchr (name, ' ');
+ tab = strchr (name, '\t');
+ }
if (separator == 0 && space == 0 && tab == 0)
p = dirname = name + strlen (name);
append:
{
- register unsigned int len = strlen (name);
+ unsigned int len = strlen (name);
p = *which_path;
while (1)
tinybuf[0] = DIRNAME_SEPARATOR;
tinybuf[1] = '\0';
- /* If we have already tacked on a name(s) in this command, be sure they stay on the front as we tack on some more. */
+ /* If we have already tacked on a name(s) in this command, be sure they stay
+ on the front as we tack on some more. */
if (prefix)
{
char *temp, c;
static void
source_info (char *ignore, int from_tty)
{
- register struct symtab *s = current_source_symtab;
+ struct symtab *s = current_source_symtab;
if (!s)
{
printf_filtered ("Source language is %s.\n", language_str (s->language));
printf_filtered ("Compiled with %s debugging format.\n", s->debugformat);
+ printf_filtered ("%s preprocessor macro info.\n",
+ s->macro_table ? "Includes" : "Does not include");
}
\f
+/* Return True if the file NAME exists and is a regular file */
+static int
+is_regular_file (const char *name)
+{
+ struct stat st;
+ const int status = stat (name, &st);
+
+ /* Stat should never fail except when the file does not exist.
+ If stat fails, analyze the source of error and return True
+ unless the file does not exist, to avoid returning false results
+ on obscure systems where stat does not work as expected.
+ */
+ if (status != 0)
+ return (errno != ENOENT);
+
+ return S_ISREG (st.st_mode);
+}
/* Open a file named STRING, searching path PATH (dir names sep by some char)
using mode MODE and protection bits PROT in the calls to open.
get that particular version of foo or an error message).
If FILENAME_OPENED is non-null, set it to a newly allocated string naming
- the actual file opened (this string will always start with a "/". We
+ the actual file opened (this string will always start with a "/"). We
have to take special pains to avoid doubling the "/" between the directory
and the file, sigh! Emacs gets confuzzed by this when we print the
source file name!!!
Otherwise, return -1, with errno set for the last name we tried to open. */
/* >>>> This should only allow files of certain types,
- >>>> eg executable, non-directory */
+ >>>> eg executable, non-directory */
int
openp (const char *path, int try_cwd_first, const char *string,
int mode, int prot,
char **filename_opened)
{
- register int fd;
- register char *filename;
+ int fd;
+ char *filename;
const char *p;
const char *p1;
- register int len;
+ int len;
int alloclen;
if (!path)
if (try_cwd_first || IS_ABSOLUTE_PATH (string))
{
int i;
- filename = alloca (strlen (string) + 1);
- strcpy (filename, string);
- fd = open (filename, mode, prot);
- if (fd >= 0)
- goto done;
+
+ if (is_regular_file (string))
+ {
+ filename = alloca (strlen (string) + 1);
+ strcpy (filename, string);
+ fd = open (filename, mode, prot);
+ if (fd >= 0)
+ goto done;
+ }
+ else
+ {
+ filename = NULL;
+ fd = -1;
+ }
+
for (i = 0; string[i]; i++)
if (IS_DIR_SEPARATOR (string[i]))
goto done;
strcat (filename + len, SLASH_STRING);
strcat (filename, string);
- fd = open (filename, mode);
- if (fd >= 0)
- break;
+ if (is_regular_file (filename))
+ {
+ fd = open (filename, mode);
+ if (fd >= 0)
+ break;
+ }
}
done:
if (filename_opened)
{
+ /* If a file was opened, canonicalize its filename. Use xfullpath
+ rather than gdb_realpath to avoid resolving the basename part
+ of filenames when the associated file is a symbolic link. This
+ fixes a potential inconsistency between the filenames known to
+ GDB and the filenames it prints in the annotations. */
if (fd < 0)
*filename_opened = NULL;
else if (IS_ABSOLUTE_PATH (filename))
- *filename_opened = savestring (filename, strlen (filename));
+ *filename_opened = xfullpath (filename);
else
{
/* Beware the // my son, the Emacs barfs, the botch that catch... */
- *filename_opened = concat (current_directory,
+ char *f = concat (current_directory,
IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1])
? "" : SLASH_STRING,
filename, NULL);
+ *filename_opened = xfullpath (f);
+ xfree (f);
}
}
- /* OBSOLETE #ifdef MPW */
- /* OBSOLETE This is a debugging hack that can go away when all combinations */
- /* OBSOLETE of Mac and Unix names are handled reasonably. */
- /* OBSOLETE { */
- /* OBSOLETE extern int debug_openp; */
- /* OBSOLETE */
- /* OBSOLETE if (debug_openp) */
- /* OBSOLETE { */
- /* OBSOLETE printf ("openp on %s, path %s mode %d prot %d\n returned %d", */
- /* OBSOLETE string, path, mode, prot, fd); */
- /* OBSOLETE if (*filename_opened) */
- /* OBSOLETE printf (" (filename is %s)", *filename_opened); */
- /* OBSOLETE printf ("\n"); */
- /* OBSOLETE } */
- /* OBSOLETE } */
- /* OBSOLETE #endif *//* MPW */
return fd;
}
if (p != s->filename)
result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname);
}
- /* OBSOLETE #ifdef MPW */
- /* OBSOLETE if (result < 0) */
- /* OBSOLETE { */
- /* OBSOLETE *//* Didn't work. Try using just the MPW basename. */
- /* OBSOLETE p = (char *) mpw_basename (s->filename); */
- /* OBSOLETE if (p != s->filename) */
- /* OBSOLETE result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); */
- /* OBSOLETE } */
- /* OBSOLETE if (result < 0) */
- /* OBSOLETE { */
- /* OBSOLETE *//* Didn't work. Try using the mixed Unix/MPW basename. */
- /* OBSOLETE p = (char *) mpw_mixed_basename (s->filename); */
- /* OBSOLETE if (p != s->filename) */
- /* OBSOLETE result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); */
- /* OBSOLETE } */
- /* OBSOLETE #endif MPW */
if (result >= 0)
{
find_source_lines (struct symtab *s, int desc)
{
struct stat st;
- register char *data, *p, *end;
+ char *data, *p, *end;
int nlines = 0;
int lines_allocated = 1000;
int *line_charpos;
/* Return the line number of character position POS in symtab S. */
int
-source_charpos_line (register struct symtab *s, register int chr)
+source_charpos_line (struct symtab *s, int chr)
{
- register int line = 0;
- register int *lnp;
+ int line = 0;
+ int *lnp;
if (s == 0 || s->line_charpos == 0)
return 0;
static int
get_filename_and_charpos (struct symtab *s, char **fullname)
{
- register int desc, linenums_changed = 0;
+ int desc, linenums_changed = 0;
desc = open_source_file (s);
if (desc < 0)
static void
print_source_lines_base (struct symtab *s, int line, int stopline, int noerror)
{
- register int c;
- register int desc;
- register FILE *stream;
+ int c;
+ int desc;
+ FILE *stream;
int nlines = stopline - line;
/* Regardless of whether we can open the file, set current_source_symtab. */
current_source_line = line;
first_line_listed = line;
-#ifdef UI_OUT
/* If printing of source lines is disabled, just print file and line number */
if (ui_out_test_flags (uiout, ui_source_list))
{
-#endif
/* Only prints "No such file or directory" once */
if ((s != last_source_visited) || (!last_source_error))
{
desc = last_source_error;
noerror = 1;
}
-#ifdef UI_OUT
}
else
{
desc = -1;
noerror = 1;
}
-#endif
if (desc < 0)
{
print_sys_errmsg (name, errno);
}
else
-#ifdef UI_OUT
ui_out_field_int (uiout, "line", line);
ui_out_text (uiout, "\tin ");
ui_out_field_string (uiout, "file", s->filename);
ui_out_text (uiout, "\n");
-#else
- printf_filtered ("%d\tin %s\n", line, s->filename);
-#endif
return;
}
while (nlines-- > 0)
{
-#ifdef UI_OUT
char buf[20];
c = fgetc (stream);
}
}
while (c != '\n' && (c = fgetc (stream)) >= 0);
-#else
- c = fgetc (stream);
- if (c == EOF)
- break;
- last_line_listed = current_source_line;
- printf_filtered ("%d\t", current_source_line++);
- do
- {
- if (c < 040 && c != '\t' && c != '\n' && c != '\r')
- printf_filtered ("^%c", c + 0100);
- else if (c == 0177)
- printf_filtered ("^?");
-#ifdef CRLF_SOURCE_FILES
- else if (c == '\r')
- {
- /* Just skip \r characters. */
- }
-#endif
- else
- printf_filtered ("%c", c);
- }
- while (c != '\n' && (c = fgetc (stream)) >= 0);
-#endif
}
fclose (stream);
print_source_lines_base (s, line, stopline, noerror);
}
\f
-
-
-/* Print a list of files and line numbers which a user may choose from
- in order to list a function which was specified ambiguously (as with
- `list classname::overloadedfuncname', for example). The vector in
- SALS provides the filenames and line numbers. */
-
-static void
-ambiguous_line_spec (struct symtabs_and_lines *sals)
-{
- int i;
-
- for (i = 0; i < sals->nelts; ++i)
- printf_filtered ("file: \"%s\", line number: %d\n",
- sals->sals[i].symtab->filename, sals->sals[i].line);
-}
-
-static void
-list_command (char *arg, int from_tty)
-{
- struct symtabs_and_lines sals, sals_end;
- struct symtab_and_line sal, sal_end;
- struct symbol *sym;
- char *arg1;
- int no_end = 1;
- int dummy_end = 0;
- int dummy_beg = 0;
- int linenum_beg = 0;
- char *p;
-
- if (!have_full_symbols () && !have_partial_symbols ())
- error ("No symbol table is loaded. Use the \"file\" command.");
-
- /* Pull in a current source symtab if necessary */
- if (current_source_symtab == 0 &&
- (arg == 0 || arg[0] == '+' || arg[0] == '-'))
- select_source_symtab (0);
-
- /* "l" or "l +" lists next ten lines. */
-
- if (arg == 0 || STREQ (arg, "+"))
- {
- if (current_source_symtab == 0)
- error ("No default source file yet. Do \"help list\".");
- print_source_lines (current_source_symtab, current_source_line,
- current_source_line + lines_to_list, 0);
- return;
- }
-
- /* "l -" lists previous ten lines, the ones before the ten just listed. */
- if (STREQ (arg, "-"))
- {
- if (current_source_symtab == 0)
- error ("No default source file yet. Do \"help list\".");
- print_source_lines (current_source_symtab,
- max (first_line_listed - lines_to_list, 1),
- first_line_listed, 0);
- return;
- }
-
- /* Now if there is only one argument, decode it in SAL
- and set NO_END.
- If there are two arguments, decode them in SAL and SAL_END
- and clear NO_END; however, if one of the arguments is blank,
- set DUMMY_BEG or DUMMY_END to record that fact. */
-
- arg1 = arg;
- if (*arg1 == ',')
- dummy_beg = 1;
- else
- {
- sals = decode_line_1 (&arg1, 0, 0, 0, 0);
-
- if (!sals.nelts)
- return; /* C++ */
- if (sals.nelts > 1)
- {
- ambiguous_line_spec (&sals);
- xfree (sals.sals);
- return;
- }
-
- sal = sals.sals[0];
- xfree (sals.sals);
- }
-
- /* Record whether the BEG arg is all digits. */
-
- for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++);
- linenum_beg = (p == arg1);
-
- while (*arg1 == ' ' || *arg1 == '\t')
- arg1++;
- if (*arg1 == ',')
- {
- no_end = 0;
- arg1++;
- while (*arg1 == ' ' || *arg1 == '\t')
- arg1++;
- if (*arg1 == 0)
- dummy_end = 1;
- else
- {
- if (dummy_beg)
- sals_end = decode_line_1 (&arg1, 0, 0, 0, 0);
- else
- sals_end = decode_line_1 (&arg1, 0, sal.symtab, sal.line, 0);
- if (sals_end.nelts == 0)
- return;
- if (sals_end.nelts > 1)
- {
- ambiguous_line_spec (&sals_end);
- xfree (sals_end.sals);
- return;
- }
- sal_end = sals_end.sals[0];
- xfree (sals_end.sals);
- }
- }
-
- if (*arg1)
- error ("Junk at end of line specification.");
-
- if (!no_end && !dummy_beg && !dummy_end
- && sal.symtab != sal_end.symtab)
- error ("Specified start and end are in different files.");
- if (dummy_beg && dummy_end)
- error ("Two empty args do not say what lines to list.");
-
- /* if line was specified by address,
- first print exactly which line, and which file.
- In this case, sal.symtab == 0 means address is outside
- of all known source files, not that user failed to give a filename. */
- if (*arg == '*')
- {
- if (sal.symtab == 0)
- /* FIXME-32x64--assumes sal.pc fits in long. */
- error ("No source file for address %s.",
- local_hex_string ((unsigned long) sal.pc));
- sym = find_pc_function (sal.pc);
- if (sym)
- {
- print_address_numeric (sal.pc, 1, gdb_stdout);
- printf_filtered (" is in ");
- fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout);
- printf_filtered (" (%s:%d).\n", sal.symtab->filename, sal.line);
- }
- else
- {
- print_address_numeric (sal.pc, 1, gdb_stdout);
- printf_filtered (" is at %s:%d.\n",
- sal.symtab->filename, sal.line);
- }
- }
-
- /* If line was not specified by just a line number,
- and it does not imply a symtab, it must be an undebuggable symbol
- which means no source code. */
-
- if (!linenum_beg && sal.symtab == 0)
- error ("No line number known for %s.", arg);
-
- /* If this command is repeated with RET,
- turn it into the no-arg variant. */
-
- if (from_tty)
- *arg = 0;
-
- if (dummy_beg && sal_end.symtab == 0)
- error ("No default source file yet. Do \"help list\".");
- if (dummy_beg)
- print_source_lines (sal_end.symtab,
- max (sal_end.line - (lines_to_list - 1), 1),
- sal_end.line + 1, 0);
- else if (sal.symtab == 0)
- error ("No default source file yet. Do \"help list\".");
- else if (no_end)
- {
- int first_line = sal.line - lines_to_list / 2;
-
- if (first_line < 1) first_line = 1;
-
- print_source_lines (sal.symtab, first_line, first_line + lines_to_list,
- 0);
- }
- else
- print_source_lines (sal.symtab, sal.line,
- (dummy_end
- ? sal.line + lines_to_list
- : sal_end.line + 1),
- 0);
-}
-\f
/* Print info on range of pc's in a specified line. */
static void
CORE_ADDR start_pc, end_pc;
int i;
- INIT_SAL (&sal); /* initialize to zeroes */
+ init_sal (&sal); /* initialize to zeroes */
if (arg == 0)
{
\f
/* Commands to search the source file for a regexp. */
-/* ARGSUSED */
static void
forward_search_command (char *regex, int from_tty)
{
- register int c;
- register int desc;
- register FILE *stream;
+ int c;
+ int desc;
+ FILE *stream;
int line;
char *msg;
msg = (char *) re_comp (regex);
if (msg)
- error (msg);
+ error ("%s", msg);
if (current_source_symtab == 0)
select_source_symtab (0);
while (1)
{
static char *buf = NULL;
- register char *p;
+ char *p;
int cursize, newsize;
cursize = 256;
fclose (stream);
}
-/* ARGSUSED */
static void
reverse_search_command (char *regex, int from_tty)
{
- register int c;
- register int desc;
- register FILE *stream;
+ int c;
+ int desc;
+ FILE *stream;
int line;
char *msg;
msg = (char *) re_comp (regex);
if (msg)
- error (msg);
+ error ("%s", msg);
if (current_source_symtab == 0)
select_source_symtab (0);
{
/* FIXME!!! We walk right off the end of buf if we get a long line!!! */
char buf[4096]; /* Should be reasonable??? */
- register char *p = buf;
+ char *p = buf;
c = getc (stream);
if (c == EOF)
if (dbx_commands)
add_com_alias ("use", "directory", class_files, 0);
- c->completer = filename_completer;
+ set_cmd_completer (c, filename_completer);
add_cmd ("directories", no_class, show_directories,
"Current search path for finding source files.\n\
add_com_alias ("?", "reverse-search", class_files, 0);
}
- add_com ("list", class_files, list_command,
- concat ("List specified function or line.\n\
-With no argument, lists ten more lines after or around previous listing.\n\
-\"list -\" lists the ten lines before a previous ten-line listing.\n\
-One argument specifies a line, and ten lines are listed around that line.\n\
-Two arguments with comma between specify starting and ending lines to list.\n\
-", "\
-Lines can be specified in these ways:\n\
- LINENUM, to list around that line in current file,\n\
- FILE:LINENUM, to list around that line in that file,\n\
- FUNCTION, to list around beginning of that function,\n\
- FILE:FUNCTION, to distinguish among like-named static functions.\n\
- *ADDRESS, to list around the line containing that address.\n\
-With two args if one is empty it stands for ten lines away from the other arg.", NULL));
-
- if (!xdb_commands)
- add_com_alias ("l", "list", class_files, 1);
- else
- add_com_alias ("v", "list", class_files, 1);
-
- if (dbx_commands)
- add_com_alias ("file", "list", class_files, 1);
-
add_show_from_set
(add_set_cmd ("listsize", class_support, var_uinteger,
(char *) &lines_to_list,
projects / deliverable / binutils-gdb.git / blobdiff