#include "objfiles.h"
#include "gdbcmd.h"
#include "breakpoint.h"
+#include "language.h"
+#include "complaints.h"
+#include "demangle.h"
#include <obstack.h>
#include <assert.h>
#include <fcntl.h>
#include <string.h>
#include <sys/stat.h>
+#include <ctype.h>
/* Global variables owned by this file */
int readnow_symbol_files; /* Read full symbols immediately */
+struct complaint oldsyms_complaint = {
+ "Replacing old symbols for `%s'", 0, 0
+};
+
+struct complaint empty_symtab_complaint = {
+ "Empty symbol table found for `%s'", 0, 0
+};
+
/* External variables and functions referenced. */
extern int info_verbose;
/* Functions this file defines */
+static void
+set_initial_language PARAMS ((void));
+
static void
load_command PARAMS ((char *, int));
static void
find_sym_fns PARAMS ((struct objfile *));
-static void
+void
clear_symtab_users_once PARAMS ((void));
/* List of all available sym_fns. On gdb startup, each object file reader
int symbol_reloading = 0;
#endif
-/* Structure to manage complaints about symbol file contents. */
-
-struct complaint complaint_root[1] = {
- {(char *) 0, 0, complaint_root},
-};
-
-/* Some actual complaints. */
-
-struct complaint oldsyms_complaint = {
- "Replacing old symbols for `%s'", 0, 0 };
-
-struct complaint empty_symtab_complaint = {
- "Empty symbol table found for `%s'", 0, 0 };
-
\f
/* In the following sort, we always make sure that
register debug symbol declarations always come before regular
if (namediff != 0) return namediff;
/* If they match, compare the rest of the names. */
- namediff = strcmp (SYMBOL_NAME (*s1), SYMBOL_NAME (*s2));
+ namediff = STRCMP (SYMBOL_NAME (*s1), SYMBOL_NAME (*s2));
if (namediff != 0) return namediff;
/* For symbols of the same name, registers should come first. */
}
else
{
- return (strcmp (st1 + 2, st2 + 2));
+ return (STRCMP (st1 + 2, st2 + 2));
}
}
}
}
+/* Remember the lowest-addressed loadable section we've seen.
+ This function is called via bfd_map_over_sections. */
+
+#if 0 /* Not used yet */
+static void
+find_lowest_section (abfd, sect, obj)
+ bfd *abfd;
+ asection *sect;
+ PTR obj;
+{
+ asection **lowest = (asection **)obj;
+
+ if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD))
+ return;
+ if (!*lowest)
+ *lowest = sect; /* First loadable section */
+ else if (bfd_section_vma (abfd, *lowest) >= bfd_section_vma (abfd, sect))
+ *lowest = sect; /* A lower loadable section */
+}
+#endif
+
/* Process a symbol file, as either the main file or as a dynamically
loaded file.
int mainline;
int verbo;
{
- asection *text_sect;
+ struct section_offsets *section_offsets;
+ asection *lowest_sect;
/* There is a distinction between having no symbol table
(we refuse to read the file, leaving the old set of symbols around)
}
(*objfile -> sf -> sym_new_init) (objfile);
+ }
+
+ /* Convert addr into an offset rather than an absolute address.
+ We find the lowest address of a loaded segment in the objfile,
+ and assume that <addr> is where that got loaded. Due to historical
+ precedent, we warn if that doesn't happen to be the ".text"
+ segment. */
- /* For mainline, caller didn't know the specified address of the
- text section. We fix that here. */
+ if (mainline)
+ {
+ addr = 0; /* No offset from objfile addresses. */
+ }
+ else
+ {
+ lowest_sect = bfd_get_section_by_name (objfile->obfd, ".text");
+#if 0
+ lowest_sect = 0;
+ bfd_map_over_sections (objfile->obfd, find_lowest_section,
+ (PTR) &lowest_sect);
+#endif
- text_sect = bfd_get_section_by_name (objfile -> obfd, ".text");
- addr = bfd_section_vma (objfile -> obfd, text_sect);
+ if (lowest_sect == 0)
+ warning ("no loadable sections found in added symbol-file %s",
+ objfile->name);
+ else if (0 == bfd_get_section_name (objfile->obfd, lowest_sect)
+ || !STREQ (".text",
+ bfd_get_section_name (objfile->obfd, lowest_sect)))
+ warning ("Lowest section in %s is %s at 0x%x",
+ objfile->name,
+ bfd_section_name (objfile->obfd, lowest_sect),
+ bfd_section_vma (objfile->obfd, lowest_sect));
+
+ if (lowest_sect)
+ addr -= bfd_section_vma (objfile->obfd, lowest_sect);
}
+ {
+ /* Debugging check inserted for testing elimination of NAMES_HAVE_UNDERSCORE.
+ Complain if the dynamic setting of NAMES_HAVE_UNDERSCORE from BFD
+ doesn't match the static setting from the GDB config files, but only
+ if we are using the first BFD target (the default target selected by
+ the same configuration that decided whether NAMES_HAVE_UNDERSCORE is
+ defined or not). For other targets (such as when the user sets GNUTARGET
+ or we are reading a "foreign" object file), it is likely that the value
+ of bfd_get_symbol_leading_char has no relation to the value of
+ NAMES_HAVE_UNDERSCORE for the target for which this gdb was built.
+ Hack alert: the only way to currently do this with bfd is to ask it to
+ produce a list of known target names and compare the first one in the
+ list with the one for the bfd we are using.
+ FIXME: Remove this check after a round of testing.
+ -- gnu@cygnus.com, 16dec92 */
+ CONST char **targets = bfd_target_list ();
+ if (targets != NULL && *targets != NULL)
+ {
+ if (bfd_get_symbol_leading_char (objfile->obfd) !=
+#ifdef NAMES_HAVE_UNDERSCORE
+ '_'
+#else
+ 0
+#endif
+ && STREQ (bfd_get_target (objfile->obfd), *targets))
+ {
+ fprintf (stderr, "GDB internal error! NAMES_HAVE_UNDERSCORE set wrong for %s BFD:\n%s\n",
+ bfd_get_target (objfile->obfd),
+ bfd_get_filename (objfile->obfd));
+ }
+ free (targets);
+ }
+ /* End of debugging check. FIXME. */
+ }
+
/* Initialize symbol reading routines for this objfile, allow complaints to
appear for this new file, and record how verbose to be, then do the
initial symbol reading for this file. */
(*objfile -> sf -> sym_init) (objfile);
clear_complaints (1, verbo);
- (*objfile -> sf -> sym_read) (objfile, addr, mainline);
+ section_offsets = (*objfile -> sf -> sym_offsets) (objfile, addr);
+ (*objfile -> sf -> sym_read) (objfile, section_offsets, mainline);
/* Don't allow char * to have a typename (else would get caddr_t.) */
/* Ditto void *. FIXME should do this for all the builtin types. */
TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0;
TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0;
+ /* Mark the objfile has having had initial symbol read attempted. Note
+ that this does not mean we found any symbols... */
+
+ objfile -> flags |= OBJF_SYMS;
+}
+
+/* Perform required actions immediately after either reading in the initial
+ symbols for a new objfile, or mapping in the symbols from a reusable
+ objfile. */
+
+void
+new_symfile_objfile (objfile, mainline, verbo)
+ struct objfile *objfile;
+ int mainline;
+ int verbo;
+{
if (mainline)
{
/* OK, make it the "real" symbol file. */
struct objfile *objfile;
struct partial_symtab *psymtab;
bfd *abfd;
- int mapped_it;
/* Open a bfd for the file and then check to see if the file has a
symbol table. There is a distinction between having no symbol table
&& !query ("Load new symbol table from \"%s\"? ", name))
error ("Not confirmed.");
+ /* Getting new symbols may change our opinion about what is
+ frameless. */
+
+ reinit_frame_cache ();
+
objfile = allocate_objfile (abfd, mapped);
/* If the objfile uses a mapped symbol file, and we have a psymtab for
wrap_here ("");
fflush (stdout);
}
+ init_entry_point_info (objfile);
+ find_sym_fns (objfile);
}
else
{
fflush (stdout);
}
syms_from_objfile (objfile, addr, mainline, from_tty);
- objfile -> flags |= OBJF_SYMS;
}
+ new_symfile_objfile (objfile, mainline, from_tty);
+
/* We now have at least a partial symbol table. Check to see if the
user requested that all symbols be read on initial access via either
the gdb startup command line or on a per symbol file basis. Expand
psymtab != NULL;
psymtab = psymtab -> next)
{
- (void) psymtab_to_symtab (psymtab);
+ psymtab_to_symtab (psymtab);
}
}
char **argv;
char *name = NULL;
struct cleanup *cleanups;
- struct objfile *objfile;
int mapped = 0;
int readnow = 0;
error ("Not confirmed.");
free_all_objfiles ();
symfile_objfile = NULL;
+ current_source_symtab = NULL;
+ current_source_line = 0;
+ if (from_tty)
+ {
+ printf ("No symbol file now.\n");
+ }
}
else
{
cleanups = make_cleanup (freeargv, (char *) argv);
while (*argv != NULL)
{
- if (strcmp (*argv, "-mapped") == 0)
+ if (STREQ (*argv, "-mapped"))
{
mapped = 1;
}
- else if (strcmp (*argv, "-readnow") == 0)
+ else if (STREQ (*argv, "-readnow"))
{
readnow = 1;
}
}
else
{
- /* Getting new symbols may change our opinion about what is
- frameless. */
- reinit_frame_cache ();
- objfile = symbol_file_add (name, from_tty, (CORE_ADDR)0, 1,
- mapped, readnow);
+ symbol_file_add (name, from_tty, (CORE_ADDR)0, 1, mapped, readnow);
+ set_initial_language ();
}
do_cleanups (cleanups);
}
}
+/* Set the initial language.
+
+ A better solution would be to record the language in the psymtab when reading
+ partial symbols, and then use it (if known) to set the language. This would
+ be a win for formats that encode the language in an easily discoverable place,
+ such as DWARF. For stabs, we can jump through hoops looking for specially
+ named symbols or try to intuit the language from the specific type of stabs
+ we find, but we can't do that until later when we read in full symbols.
+ FIXME. */
+
+static void
+set_initial_language ()
+{
+ struct partial_symtab *pst;
+ enum language lang = language_unknown;
+
+ pst = find_main_psymtab ();
+ if (pst != NULL)
+ {
+ if (pst -> filename != NULL)
+ {
+ lang = deduce_language_from_filename (pst -> filename);
+ }
+ if (lang == language_unknown)
+ {
+ /* Make C the default language */
+ lang = language_c;
+ }
+ set_language (lang);
+ expected_language = current_language; /* Don't warn the user */
+ }
+}
+
/* Open file specified by NAME and hand it off to BFD for preliminary
analysis. Result is a newly initialized bfd *, which includes a newly
malloc'd` copy of NAME (tilde-expanded and made absolute).
}
free (name); /* Free 1st new malloc'd copy */
name = absolute_name; /* Keep 2nd malloc'd copy in bfd */
+ /* It'll be freed in free_objfile(). */
sym_bfd = bfd_fdopenr (name, NULL, desc);
if (!sym_bfd)
error ("\"%s\": can't open to read symbols: %s.", name,
bfd_errmsg (bfd_error));
}
+ sym_bfd->cacheable = true;
if (!bfd_check_format (sym_bfd, bfd_object))
{
find_sym_fns (objfile)
struct objfile *objfile;
{
- struct sym_fns *sf, *sf2;
+ struct sym_fns *sf;
for (sf = symtab_fns; sf != NULL; sf = sf -> next)
{
char *name = NULL;
CORE_ADDR text_addr;
char *arg;
- int readnow;
- int mapped;
+ int readnow = 0;
+ int mapped = 0;
dont_repeat ();
{
name = arg;
}
- else if (strcmp (arg, "-mapped") == 0)
+ else if (STREQ (arg, "-mapped"))
{
mapped = 1;
}
- else if (strcmp (arg, "-readnow") == 0)
+ else if (STREQ (arg, "-readnow"))
{
readnow = 1;
}
name, local_hex_string (text_addr)))
error ("Not confirmed.");
- /* Getting new symbols may change our opinion about what is
- frameless. */
-
- reinit_frame_cache ();
-
- (void) symbol_file_add (name, 0, text_addr, 0, mapped, readnow);
+ symbol_file_add (name, 0, text_addr, 0, mapped, readnow);
}
\f
/* Re-read symbols if a symbol-file has changed. */
if (reread_one)
breakpoint_re_set ();
}
-\f
-/* Functions to handle complaints during symbol reading. */
-
-/* How many complaints about a particular thing should be printed before
- we stop whining about it? Default is no whining at all, since so many
- systems have ill-constructed symbol files. */
-
-static unsigned stop_whining = 0;
-
-/* Should each complaint be self explanatory, or should we assume that
- a series of complaints is being produced?
- case 0: self explanatory message.
- case 1: First message of a series that must start off with explanation.
- case 2: Subsequent message, when user already knows we are reading
- symbols and we can just state our piece. */
-
-static int complaint_series = 0;
-
-/* Print a complaint about the input symbols, and link the complaint block
- into a chain for later handling. */
-
-void
-complain (complaint, val)
- struct complaint *complaint;
- char *val;
-{
- complaint->counter++;
- if (complaint->next == 0) {
- complaint->next = complaint_root->next;
- complaint_root->next = complaint;
- }
- if (complaint->counter > stop_whining)
- return;
- wrap_here ("");
-
- switch (complaint_series + (info_verbose << 1)) {
-
- /* Isolated messages, must be self-explanatory. */
- case 0:
- puts_filtered ("During symbol reading, ");
- wrap_here("");
- printf_filtered (complaint->message, val);
- puts_filtered (".\n");
- break;
-
- /* First of a series, without `set verbose'. */
- case 1:
- puts_filtered ("During symbol reading...");
- printf_filtered (complaint->message, val);
- puts_filtered ("...");
- wrap_here("");
- complaint_series++;
- break;
-
- /* Subsequent messages of a series, or messages under `set verbose'.
- (We'll already have produced a "Reading in symbols for XXX..." message
- and will clean up at the end with a newline.) */
- default:
- printf_filtered (complaint->message, val);
- puts_filtered ("...");
- wrap_here("");
- }
-}
-/* Clear out all complaint counters that have ever been incremented.
- If sym_reading is 1, be less verbose about successive complaints,
- since the messages are appearing all together during a command that
- reads symbols (rather than scattered around as psymtabs get fleshed
- out into symtabs at random times). If noisy is 1, we are in a
- noisy symbol reading command, and our caller will print enough
- context for the user to figure it out. */
-
-void
-clear_complaints (sym_reading, noisy)
- int sym_reading;
- int noisy;
-{
- struct complaint *p;
-
- for (p = complaint_root->next; p != complaint_root; p = p->next)
- p->counter = 0;
-
- if (!sym_reading && !noisy && complaint_series > 1) {
- /* Terminate previous series, since caller won't. */
- puts_filtered ("\n");
- }
-
- complaint_series = sym_reading? 1 + noisy: 0;
-}
\f
enum language
deduce_language_from_filename (filename)
char *c = strrchr (filename, '.');
if (!c) ; /* Get default. */
- else if(!strcmp(c,".mod"))
+ else if(STREQ(c,".mod"))
return language_m2;
- else if(!strcmp(c,".c"))
+ else if(STREQ(c,".c"))
return language_c;
- else if(!strcmp(c,".cc") || !strcmp(c,".C"))
+ else if(STREQ(c,".cc") || STREQ(c,".C"))
return language_cplus;
+ /* start-sanitize-chill */
+ else if(STREQ(c,".ch") || STREQ(c,".c186") || STREQ(c,".c286"))
+ return language_chill;
+ /* end-sanitize-chill */
return language_unknown; /* default */
}
symtab = (struct symtab *)
obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symtab));
- (void) memset (symtab, 0, sizeof (*symtab));
+ memset (symtab, 0, sizeof (*symtab));
symtab -> filename = obsavestring (filename, strlen (filename),
&objfile -> symbol_obstack);
symtab -> fullname = NULL;
obstack_alloc (&objfile -> psymbol_obstack,
sizeof (struct partial_symtab));
- (void) memset (psymtab, 0, sizeof (struct partial_symtab));
+ memset (psymtab, 0, sizeof (struct partial_symtab));
psymtab -> filename = obsavestring (filename, strlen (filename),
&objfile -> psymbol_obstack);
psymtab -> symtab = NULL;
static int clear_symtab_users_queued;
static int clear_symtab_users_done;
-static void
+void
clear_symtab_users_once ()
{
/* Enforce once-per-`do_cleanups'-semantics */
free_named_symtabs (name)
char *name;
{
- register struct symtab *s;
- register struct symtab *prev;
- register struct partial_symtab *ps;
- struct blockvector *bv;
- int blewit = 0;
-
#if 0
/* FIXME: With the new method of each objfile having it's own
psymtab list, this function needs serious rethinking. In particular,
why was it ever necessary to toss psymtabs with specific compilation
unit filenames, as opposed to all psymtabs from a particular symbol
- file. */
+ file? -- fnf
+ Well, the answer is that some systems permit reloading of particular
+ compilation units. We want to blow away any old info about these
+ compilation units, regardless of which objfiles they arrived in. --gnu. */
+
+ register struct symtab *s;
+ register struct symtab *prev;
+ register struct partial_symtab *ps;
+ struct blockvector *bv;
+ int blewit = 0;
/* We only wack things if the symbol-reload switch is set. */
if (!symbol_reloading)
again2:
for (ps = partial_symtab_list; ps; ps = ps->next) {
- if (!strcmp (name, ps->filename)) {
+ if (STREQ (name, ps->filename)) {
cashier_psymtab (ps); /* Blow it away...and its little dog, too. */
goto again2; /* Must restart, chain has been munged */
}
for (s = symtab_list; s; s = s->next)
{
- if (!strcmp (name, s->filename))
+ if (STREQ (name, s->filename))
break;
prev = s;
}
struct partial_symtab *
-start_psymtab_common (objfile, addr,
+start_psymtab_common (objfile, section_offsets,
filename, textlow, global_syms, static_syms)
struct objfile *objfile;
- CORE_ADDR addr;
+ struct section_offsets *section_offsets;
char *filename;
CORE_ADDR textlow;
struct partial_symbol *global_syms;
struct partial_symtab *psymtab;
psymtab = allocate_psymtab (filename, objfile);
- psymtab -> addr = addr;
+ psymtab -> section_offsets = section_offsets;
psymtab -> textlow = textlow;
psymtab -> texthigh = psymtab -> textlow; /* default */
psymtab -> globals_offset = global_syms - objfile -> global_psymbols.list;
psymtab -> statics_offset = static_syms - objfile -> static_psymbols.list;
return (psymtab);
}
+\f
+/* Debugging versions of functions that are usually inline macros
+ (see symfile.h). */
+
+#if !INLINE_ADD_PSYMBOL
+
+/* Add a symbol with a long value to a psymtab.
+ Since one arg is a struct, we pass in a ptr and deref it (sigh). */
+
+void
+add_psymbol_to_list (name, namelength, namespace, class, list, val, language,
+ objfile)
+ char *name;
+ int namelength;
+ enum namespace namespace;
+ enum address_class class;
+ struct psymbol_allocation_list *list;
+ long val;
+ enum language language;
+ struct objfile *objfile;
+{
+ register struct partial_symbol *psym;
+ register char *demangled_name;
+
+ if (list->next >= list->list + list->size)
+ {
+ extend_psymbol_list (list,objfile);
+ }
+ psym = list->next++;
+
+ SYMBOL_NAME (psym) =
+ (char *) obstack_alloc (&objfile->psymbol_obstack, namelength + 1);
+ memcpy (SYMBOL_NAME (psym), name, namelength);
+ SYMBOL_NAME (psym)[namelength] = '\0';
+ SYMBOL_VALUE (psym) = val;
+ SYMBOL_LANGUAGE (psym) = language;
+ PSYMBOL_NAMESPACE (psym) = namespace;
+ PSYMBOL_CLASS (psym) = class;
+ SYMBOL_INIT_DEMANGLED_NAME (psym, &objfile->psymbol_obstack);
+}
+
+/* Add a symbol with a CORE_ADDR value to a psymtab. */
+
+void
+add_psymbol_addr_to_list (name, namelength, namespace, class, list, val,
+ language, objfile)
+ char *name;
+ int namelength;
+ enum namespace namespace;
+ enum address_class class;
+ struct psymbol_allocation_list *list;
+ CORE_ADDR val;
+ enum language language;
+ struct objfile *objfile;
+{
+ register struct partial_symbol *psym;
+ register char *demangled_name;
+
+ if (list->next >= list->list + list->size)
+ {
+ extend_psymbol_list (list,objfile);
+ }
+ psym = list->next++;
+
+ SYMBOL_NAME (psym) =
+ (char *) obstack_alloc (&objfile->psymbol_obstack, namelength + 1);
+ memcpy (SYMBOL_NAME (psym), name, namelength);
+ SYMBOL_NAME (psym)[namelength] = '\0';
+ SYMBOL_VALUE_ADDRESS (psym) = val;
+ SYMBOL_LANGUAGE (psym) = language;
+ PSYMBOL_NAMESPACE (psym) = namespace;
+ PSYMBOL_CLASS (psym) = class;
+ SYMBOL_INIT_DEMANGLED_NAME (psym, &objfile->psymbol_obstack);
+}
+
+#endif /* !INLINE_ADD_PSYMBOL */
\f
void
"Dynamically load FILE into the running program, and record its symbols\n\
for access from GDB.");
- add_show_from_set
- (add_set_cmd ("complaints", class_support, var_zinteger,
- (char *)&stop_whining,
- "Set max number of complaints about incorrect symbols.",
- &setlist),
- &showlist);
-
add_show_from_set
(add_set_cmd ("symbol-reloading", class_support, var_boolean,
(char *)&symbol_reloading,
projects / deliverable / binutils-gdb.git / blobdiff