/* Generic symbol file reading for the GNU debugger, GDB.
- Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+
+ Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+
Contributed by Cygnus Support, using pieces from other GDB modules.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program 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 General Public License for more details.
+ This program 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 General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
+#include "bfdlink.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "gdbcore.h"
#include "value.h"
#include "symfile.h"
#include "objfiles.h"
+#include "source.h"
#include "gdbcmd.h"
#include "breakpoint.h"
#include "language.h"
#include "complaints.h"
#include "demangle.h"
-#include "inferior.h" /* for write_pc */
-
-#include <obstack.h>
-#include <assert.h>
+#include "inferior.h" /* for write_pc */
+#include "filenames.h" /* for DOSish file names */
+#include "gdb-stabs.h"
+#include "gdb_obstack.h"
+#include "completer.h"
+#include "bcache.h"
+#include "hashtab.h"
+#include "readline/readline.h"
+#include "gdb_assert.h"
+#include "block.h"
+#include "observer.h"
+#include "exec.h"
#include <sys/types.h>
#include <fcntl.h>
-#include <string.h>
-#include <sys/stat.h>
+#include "gdb_string.h"
+#include "gdb_stat.h"
#include <ctype.h>
+#include <time.h>
+#include <sys/time.h>
#ifndef O_BINARY
#define O_BINARY 0
#endif
-/* Global variables owned by this file */
-int readnow_symbol_files; /* Read full symbols immediately */
+int (*deprecated_ui_load_progress_hook) (const char *section, unsigned long num);
+void (*deprecated_show_load_progress) (const char *section,
+ unsigned long section_sent,
+ unsigned long section_size,
+ unsigned long total_sent,
+ unsigned long total_size);
+void (*deprecated_pre_add_symbol_hook) (const char *);
+void (*deprecated_post_add_symbol_hook) (void);
+void (*deprecated_target_new_objfile_hook) (struct objfile *);
-struct complaint oldsyms_complaint = {
- "Replacing old symbols for `%s'", 0, 0
-};
+static void clear_symtab_users_cleanup (void *ignore);
-struct complaint empty_symtab_complaint = {
- "Empty symbol table found for `%s'", 0, 0
-};
+/* Global variables owned by this file */
+int readnow_symbol_files; /* Read full symbols immediately */
/* External variables and functions referenced. */
-extern int info_verbose;
+extern void report_transfer_performance (unsigned long, time_t, time_t);
/* Functions this file defines */
-static void
-set_initial_language PARAMS ((void));
+#if 0
+static int simple_read_overlay_region_table (void);
+static void simple_free_overlay_region_table (void);
+#endif
-static void
-load_command PARAMS ((char *, int));
+static void set_initial_language (void);
-static void
-add_symbol_file_command PARAMS ((char *, int));
+static void load_command (char *, int);
-static void
-add_shared_symbol_files_command PARAMS ((char *, int));
+static void symbol_file_add_main_1 (char *args, int from_tty, int flags);
-static void
-cashier_psymtab PARAMS ((struct partial_symtab *));
+static void add_symbol_file_command (char *, int);
-static int
-compare_psymbols PARAMS ((const void *, const void *));
+static void add_shared_symbol_files_command (char *, int);
-static int
-compare_symbols PARAMS ((const void *, const void *));
+static void reread_separate_symbols (struct objfile *objfile);
-static bfd *
-symfile_bfd_open PARAMS ((char *));
+static void cashier_psymtab (struct partial_symtab *);
-static void
-find_sym_fns PARAMS ((struct objfile *));
+bfd *symfile_bfd_open (char *);
+
+int get_section_index (struct objfile *, char *);
+
+static void find_sym_fns (struct objfile *);
+
+static void decrement_reading_symtab (void *);
+
+static void overlay_invalidate_all (void);
+
+static int overlay_is_mapped (struct obj_section *);
+
+void list_overlays_command (char *, int);
+
+void map_overlay_command (char *, int);
+
+void unmap_overlay_command (char *, int);
+
+static void overlay_auto_command (char *, int);
+
+static void overlay_manual_command (char *, int);
+
+static void overlay_off_command (char *, int);
+
+static void overlay_load_command (char *, int);
+
+static void overlay_command (char *, int);
+
+static void simple_free_overlay_table (void);
+
+static void read_target_long_array (CORE_ADDR, unsigned int *, int);
+
+static int simple_read_overlay_table (void);
+
+static int simple_overlay_update_1 (struct obj_section *);
+
+static void add_filename_language (char *ext, enum language lang);
+
+static void info_ext_lang_command (char *args, int from_tty);
+
+static char *find_separate_debug_file (struct objfile *objfile);
+
+static void init_filename_language_table (void);
+
+void _initialize_symfile (void);
/* List of all available sym_fns. On gdb startup, each object file reader
calls add_symtab_fns() to register information on each format it is
static struct sym_fns *symtab_fns = NULL;
-/* Structures with which to manage partial symbol allocation. */
-
-struct psymbol_allocation_list global_psymbols = {0}, static_psymbols = {0};
-
/* Flag for whether user will be reloading symbols multiple times.
Defaults to ON for VxWorks, otherwise OFF. */
#else
int symbol_reloading = 0;
#endif
-
-\f
-/* Since this function is called from within qsort, in an ANSI environment
- it must conform to the prototype for qsort, which specifies that the
- comparison function takes two "void *" pointers. */
-
-static int
-compare_symbols (s1p, s2p)
- const PTR s1p;
- const PTR s2p;
+static void
+show_symbol_reloading (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
{
- register struct symbol **s1, **s2;
-
- s1 = (struct symbol **) s1p;
- s2 = (struct symbol **) s2p;
-
- return (STRCMP (SYMBOL_NAME (*s1), SYMBOL_NAME (*s2)));
+ fprintf_filtered (file, _("\
+Dynamic symbol table reloading multiple times in one run is %s.\n"),
+ value);
}
-/*
-LOCAL FUNCTION
+/* If non-zero, shared library symbols will be added automatically
+ when the inferior is created, new libraries are loaded, or when
+ attaching to the inferior. This is almost always what users will
+ want to have happen; but for very large programs, the startup time
+ will be excessive, and so if this is a problem, the user can clear
+ this flag and then add the shared library symbols as needed. Note
+ that there is a potential for confusion, since if the shared
+ library symbols are not loaded, commands like "info fun" will *not*
+ report all the functions that are actually present. */
- compare_psymbols -- compare two partial symbols by name
+int auto_solib_add = 1;
-DESCRIPTION
+/* For systems that support it, a threshold size in megabytes. If
+ automatically adding a new library's symbol table to those already
+ known to the debugger would cause the total shared library symbol
+ size to exceed this threshhold, then the shlib's symbols are not
+ added. The threshold is ignored if the user explicitly asks for a
+ shlib to be added, such as when using the "sharedlibrary"
+ command. */
- Given pointer to two partial symbol table entries, compare
- them by name and return -N, 0, or +N (ala strcmp). Typically
- used by sorting routines like qsort().
-
-NOTES
-
- Does direct compare of first two characters before punting
- and passing to strcmp for longer compares. Note that the
- original version had a bug whereby two null strings or two
- identically named one character strings would return the
- comparison of memory following the null byte.
+int auto_solib_limit;
+\f
- */
+/* This compares two partial symbols by names, using strcmp_iw_ordered
+ for the comparison. */
static int
-compare_psymbols (s1p, s2p)
- const PTR s1p;
- const PTR s2p;
+compare_psymbols (const void *s1p, const void *s2p)
{
- register char *st1 = SYMBOL_NAME ((struct partial_symbol *) s1p);
- register char *st2 = SYMBOL_NAME ((struct partial_symbol *) s2p);
+ struct partial_symbol *const *s1 = s1p;
+ struct partial_symbol *const *s2 = s2p;
- if ((st1[0] - st2[0]) || !st1[0])
- {
- return (st1[0] - st2[0]);
- }
- else if ((st1[1] - st2[1]) || !st1[1])
- {
- return (st1[1] - st2[1]);
- }
- else
- {
- return (STRCMP (st1 + 2, st2 + 2));
- }
+ return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1),
+ SYMBOL_SEARCH_NAME (*s2));
}
void
-sort_pst_symbols (pst)
- struct partial_symtab *pst;
+sort_pst_symbols (struct partial_symtab *pst)
{
/* Sort the global list; don't sort the static list */
- qsort (pst -> objfile -> global_psymbols.list + pst -> globals_offset,
- pst -> n_global_syms, sizeof (struct partial_symbol),
+ qsort (pst->objfile->global_psymbols.list + pst->globals_offset,
+ pst->n_global_syms, sizeof (struct partial_symbol *),
compare_psymbols);
}
-/* Call sort_block_syms to sort alphabetically the symbols of one block. */
-
-void
-sort_block_syms (b)
- register struct block *b;
-{
- qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b),
- sizeof (struct symbol *), compare_symbols);
-}
-
-/* Call sort_symtab_syms to sort alphabetically
- the symbols of each block of one symtab. */
-
-void
-sort_symtab_syms (s)
- register struct symtab *s;
-{
- register struct blockvector *bv;
- int nbl;
- int i;
- register struct block *b;
-
- if (s == 0)
- return;
- bv = BLOCKVECTOR (s);
- nbl = BLOCKVECTOR_NBLOCKS (bv);
- for (i = 0; i < nbl; i++)
- {
- b = BLOCKVECTOR_BLOCK (bv, i);
- if (BLOCK_SHOULD_SORT (b))
- sort_block_syms (b);
- }
-}
-
-/* Make a copy of the string at PTR with SIZE characters in the symbol obstack
- (and add a null character at the end in the copy).
- Returns the address of the copy. */
+/* Make a null terminated copy of the string at PTR with SIZE characters in
+ the obstack pointed to by OBSTACKP . Returns the address of the copy.
+ Note that the string at PTR does not have to be null terminated, I.E. it
+ may be part of a larger string and we are only saving a substring. */
char *
-obsavestring (ptr, size, obstackp)
- char *ptr;
- int size;
- struct obstack *obstackp;
-{
- register char *p = (char *) obstack_alloc (obstackp, size + 1);
- /* Open-coded memcpy--saves function call time.
- These strings are usually short. */
+obsavestring (const char *ptr, int size, struct obstack *obstackp)
+{
+ char *p = (char *) obstack_alloc (obstackp, size + 1);
+ /* Open-coded memcpy--saves function call time. These strings are usually
+ short. FIXME: Is this really still true with a compiler that can
+ inline memcpy? */
{
- register char *p1 = ptr;
- register char *p2 = p;
- char *end = ptr + size;
+ const char *p1 = ptr;
+ char *p2 = p;
+ const char *end = ptr + size;
while (p1 != end)
*p2++ = *p1++;
}
return p;
}
-/* Concatenate strings S1, S2 and S3; return the new string.
- Space is found in the symbol_obstack. */
+/* Concatenate strings S1, S2 and S3; return the new string. Space is found
+ in the obstack pointed to by OBSTACKP. */
char *
-obconcat (obstackp, s1, s2, s3)
- struct obstack *obstackp;
- const char *s1, *s2, *s3;
+obconcat (struct obstack *obstackp, const char *s1, const char *s2,
+ const char *s3)
{
- register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1;
- register char *val = (char *) obstack_alloc (obstackp, len);
+ int len = strlen (s1) + strlen (s2) + strlen (s3) + 1;
+ char *val = (char *) obstack_alloc (obstackp, len);
strcpy (val, s1);
strcat (val, s2);
strcat (val, s3);
return val;
}
+/* True if we are nested inside psymtab_to_symtab. */
+
+int currently_reading_symtab = 0;
+
+static void
+decrement_reading_symtab (void *dummy)
+{
+ currently_reading_symtab--;
+}
+
/* Get the symbol table that corresponds to a partial_symtab.
This is fast after the first time you do it. In fact, there
is an even faster macro PSYMTAB_TO_SYMTAB that does the fast
case inline. */
struct symtab *
-psymtab_to_symtab (pst)
- register struct partial_symtab *pst;
+psymtab_to_symtab (struct partial_symtab *pst)
{
/* If it's been looked up before, return it. */
if (pst->symtab)
/* If it has not yet been read in, read it. */
if (!pst->readin)
- {
+ {
+ struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL);
+ currently_reading_symtab++;
(*pst->read_symtab) (pst);
+ do_cleanups (back_to);
}
return pst->symtab;
}
-/* Initialize entry point information for this objfile. */
+/* Remember the lowest-addressed loadable section we've seen.
+ This function is called via bfd_map_over_sections.
+
+ In case of equal vmas, the section with the largest size becomes the
+ lowest-addressed loadable section.
+
+ If the vmas and sizes are equal, the last section is considered the
+ lowest-addressed loadable section. */
void
-init_entry_point_info (objfile)
- struct objfile *objfile;
+find_lowest_section (bfd *abfd, asection *sect, void *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 */
+ else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect)
+ && (bfd_section_size (abfd, (*lowest))
+ <= bfd_section_size (abfd, sect)))
+ *lowest = sect;
+}
+
+/* Create a new section_addr_info, with room for NUM_SECTIONS. */
+
+struct section_addr_info *
+alloc_section_addr_info (size_t num_sections)
+{
+ struct section_addr_info *sap;
+ size_t size;
+
+ size = (sizeof (struct section_addr_info)
+ + sizeof (struct other_sections) * (num_sections - 1));
+ sap = (struct section_addr_info *) xmalloc (size);
+ memset (sap, 0, size);
+ sap->num_sections = num_sections;
+
+ return sap;
+}
+
+
+/* Return a freshly allocated copy of ADDRS. The section names, if
+ any, are also freshly allocated copies of those in ADDRS. */
+struct section_addr_info *
+copy_section_addr_info (struct section_addr_info *addrs)
{
- /* Save startup file's range of PC addresses to help blockframe.c
- decide where the bottom of the stack is. */
+ struct section_addr_info *copy
+ = alloc_section_addr_info (addrs->num_sections);
+ int i;
- if (bfd_get_file_flags (objfile -> obfd) & EXEC_P)
+ copy->num_sections = addrs->num_sections;
+ for (i = 0; i < addrs->num_sections; i++)
{
- /* Executable file -- record its entry point so we'll recognize
- the startup file because it contains the entry point. */
- objfile -> ei.entry_point = bfd_get_start_address (objfile -> obfd);
+ copy->other[i].addr = addrs->other[i].addr;
+ if (addrs->other[i].name)
+ copy->other[i].name = xstrdup (addrs->other[i].name);
+ else
+ copy->other[i].name = NULL;
+ copy->other[i].sectindex = addrs->other[i].sectindex;
}
- else
+
+ return copy;
+}
+
+
+
+/* Build (allocate and populate) a section_addr_info struct from
+ an existing section table. */
+
+extern struct section_addr_info *
+build_section_addr_info_from_section_table (const struct section_table *start,
+ const struct section_table *end)
+{
+ struct section_addr_info *sap;
+ const struct section_table *stp;
+ int oidx;
+
+ sap = alloc_section_addr_info (end - start);
+
+ for (stp = start, oidx = 0; stp != end; stp++)
{
- /* Examination of non-executable.o files. Short-circuit this stuff. */
- objfile -> ei.entry_point = INVALID_ENTRY_POINT;
- objfile -> ei.entry_file_lowpc = INVALID_ENTRY_LOWPC;
- objfile -> ei.entry_file_highpc = INVALID_ENTRY_HIGHPC;
+ if (bfd_get_section_flags (stp->bfd,
+ stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD)
+ && oidx < end - start)
+ {
+ sap->other[oidx].addr = stp->addr;
+ sap->other[oidx].name
+ = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section));
+ sap->other[oidx].sectindex = stp->the_bfd_section->index;
+ oidx++;
+ }
}
+
+ return sap;
}
-/* Get current entry point address. */
-CORE_ADDR
-entry_point_address()
+/* Free all memory allocated by build_section_addr_info_from_section_table. */
+
+extern void
+free_section_addr_info (struct section_addr_info *sap)
{
- return symfile_objfile ? symfile_objfile->ei.entry_point : 0;
+ int idx;
+
+ for (idx = 0; idx < sap->num_sections; idx++)
+ if (sap->other[idx].name)
+ xfree (sap->other[idx].name);
+ xfree (sap);
}
-/* Remember the lowest-addressed loadable section we've seen.
- This function is called via bfd_map_over_sections. */
-#if 0 /* Not used yet */
+/* Initialize OBJFILE's sect_index_* members. */
static void
-find_lowest_section (abfd, sect, obj)
- bfd *abfd;
- asection *sect;
- PTR obj;
+init_objfile_sect_indices (struct objfile *objfile)
{
- asection **lowest = (asection **)obj;
+ asection *sect;
+ int i;
- if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD))
+ sect = bfd_get_section_by_name (objfile->obfd, ".text");
+ if (sect)
+ objfile->sect_index_text = sect->index;
+
+ sect = bfd_get_section_by_name (objfile->obfd, ".data");
+ if (sect)
+ objfile->sect_index_data = sect->index;
+
+ sect = bfd_get_section_by_name (objfile->obfd, ".bss");
+ if (sect)
+ objfile->sect_index_bss = sect->index;
+
+ sect = bfd_get_section_by_name (objfile->obfd, ".rodata");
+ if (sect)
+ objfile->sect_index_rodata = sect->index;
+
+ /* This is where things get really weird... We MUST have valid
+ indices for the various sect_index_* members or gdb will abort.
+ So if for example, there is no ".text" section, we have to
+ accomodate that. Except when explicitly adding symbol files at
+ some address, section_offsets contains nothing but zeros, so it
+ doesn't matter which slot in section_offsets the individual
+ sect_index_* members index into. So if they are all zero, it is
+ safe to just point all the currently uninitialized indices to the
+ first slot. */
+
+ for (i = 0; i < objfile->num_sections; i++)
+ {
+ if (ANOFFSET (objfile->section_offsets, i) != 0)
+ {
+ break;
+ }
+ }
+ if (i == objfile->num_sections)
+ {
+ if (objfile->sect_index_text == -1)
+ objfile->sect_index_text = 0;
+ if (objfile->sect_index_data == -1)
+ objfile->sect_index_data = 0;
+ if (objfile->sect_index_bss == -1)
+ objfile->sect_index_bss = 0;
+ if (objfile->sect_index_rodata == -1)
+ objfile->sect_index_rodata = 0;
+ }
+}
+
+/* The arguments to place_section. */
+
+struct place_section_arg
+{
+ struct section_offsets *offsets;
+ CORE_ADDR lowest;
+};
+
+/* Find a unique offset to use for loadable section SECT if
+ the user did not provide an offset. */
+
+void
+place_section (bfd *abfd, asection *sect, void *obj)
+{
+ struct place_section_arg *arg = obj;
+ CORE_ADDR *offsets = arg->offsets->offsets, start_addr;
+ int done;
+
+ /* We are only interested in loadable sections. */
+ if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0)
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 */
+
+ /* If the user specified an offset, honor it. */
+ if (offsets[sect->index] != 0)
+ return;
+
+ /* Otherwise, let's try to find a place for the section. */
+ do {
+ asection *cur_sec;
+ ULONGEST align = 1 << bfd_get_section_alignment (abfd, sect);
+
+ start_addr = (arg->lowest + align - 1) & -align;
+ done = 1;
+
+ for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next)
+ {
+ int indx = cur_sec->index;
+ CORE_ADDR cur_offset;
+
+ /* We don't need to compare against ourself. */
+ if (cur_sec == sect)
+ continue;
+
+ /* We can only conflict with loadable sections. */
+ if ((bfd_get_section_flags (abfd, cur_sec) & SEC_LOAD) == 0)
+ continue;
+
+ /* We do not expect this to happen; just ignore sections in a
+ relocatable file with an assigned VMA. */
+ if (bfd_section_vma (abfd, cur_sec) != 0)
+ continue;
+
+ /* If the section offset is 0, either the section has not been placed
+ yet, or it was the lowest section placed (in which case LOWEST
+ will be past its end). */
+ if (offsets[indx] == 0)
+ continue;
+
+ /* If this section would overlap us, then we must move up. */
+ if (start_addr + bfd_get_section_size (sect) > offsets[indx]
+ && start_addr < offsets[indx] + bfd_get_section_size (cur_sec))
+ {
+ start_addr = offsets[indx] + bfd_get_section_size (cur_sec);
+ start_addr = (start_addr + align - 1) & -align;
+ done = 0;
+ continue;
+ }
+
+ /* Otherwise, we appear to be OK. So far. */
+ }
+ }
+ while (!done);
+
+ offsets[sect->index] = start_addr;
+ arg->lowest = start_addr + bfd_get_section_size (sect);
+
+ exec_set_section_address (bfd_get_filename (abfd), sect->index, start_addr);
+}
+
+/* Parse the user's idea of an offset for dynamic linking, into our idea
+ of how to represent it for fast symbol reading. This is the default
+ version of the sym_fns.sym_offsets function for symbol readers that
+ don't need to do anything special. It allocates a section_offsets table
+ for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */
+
+void
+default_symfile_offsets (struct objfile *objfile,
+ struct section_addr_info *addrs)
+{
+ int i;
+
+ objfile->num_sections = bfd_count_sections (objfile->obfd);
+ objfile->section_offsets = (struct section_offsets *)
+ obstack_alloc (&objfile->objfile_obstack,
+ SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
+ memset (objfile->section_offsets, 0,
+ SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
+
+ /* Now calculate offsets for section that were specified by the
+ caller. */
+ for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++)
+ {
+ struct other_sections *osp ;
+
+ osp = &addrs->other[i] ;
+ if (osp->addr == 0)
+ continue;
+
+ /* Record all sections in offsets */
+ /* The section_offsets in the objfile are here filled in using
+ the BFD index. */
+ (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr;
+ }
+
+ /* For relocatable files, all loadable sections will start at zero.
+ The zero is meaningless, so try to pick arbitrary addresses such
+ that no loadable sections overlap. This algorithm is quadratic,
+ but the number of sections in a single object file is generally
+ small. */
+ if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0)
+ {
+ struct place_section_arg arg;
+ arg.offsets = objfile->section_offsets;
+ arg.lowest = 0;
+ bfd_map_over_sections (objfile->obfd, place_section, &arg);
+ }
+
+ /* Remember the bfd indexes for the .text, .data, .bss and
+ .rodata sections. */
+ init_objfile_sect_indices (objfile);
}
-#endif
+
/* Process a symbol file, as either the main file or as a dynamically
loaded file.
- NAME is the file name (which will be tilde-expanded and made
- absolute herein) (but we don't free or modify NAME itself).
- FROM_TTY says how verbose to be. MAINLINE specifies whether this
- is the main symbol file, or whether it's an extra symbol file such
- as dynamically loaded code. If !mainline, ADDR is the address
- where the text segment was loaded. If VERBO, the caller has printed
- a verbose message about the symbol reading (and complaints can be
- more terse about it). */
+ OBJFILE is where the symbols are to be read from.
+
+ ADDRS is the list of section load addresses. If the user has given
+ an 'add-symbol-file' command, then this is the list of offsets and
+ addresses he or she provided as arguments to the command; or, if
+ we're handling a shared library, these are the actual addresses the
+ sections are loaded at, according to the inferior's dynamic linker
+ (as gleaned by GDB's shared library code). We convert each address
+ into an offset from the section VMA's as it appears in the object
+ file, and then call the file's sym_offsets function to convert this
+ into a format-specific offset table --- a `struct section_offsets'.
+ If ADDRS is non-zero, OFFSETS must be zero.
+
+ OFFSETS is a table of section offsets already in the right
+ format-specific representation. NUM_OFFSETS is the number of
+ elements present in OFFSETS->offsets. If OFFSETS is non-zero, we
+ assume this is the proper table the call to sym_offsets described
+ above would produce. Instead of calling sym_offsets, we just dump
+ it right into objfile->section_offsets. (When we're re-reading
+ symbols from an objfile, we don't have the original load address
+ list any more; all we have is the section offset table.) If
+ OFFSETS is non-zero, ADDRS must be zero.
+
+ MAINLINE is nonzero if this is the main symbol file, or zero if
+ it's an extra symbol file such as dynamically loaded code.
+
+ VERBO is nonzero if the caller has printed a verbose message about
+ the symbol reading (and complaints can be more terse about it). */
void
-syms_from_objfile (objfile, addr, mainline, verbo)
- struct objfile *objfile;
- CORE_ADDR addr;
- int mainline;
- int verbo;
-{
- struct section_offsets *section_offsets;
- asection *lowest_sect;
+syms_from_objfile (struct objfile *objfile,
+ struct section_addr_info *addrs,
+ struct section_offsets *offsets,
+ int num_offsets,
+ int mainline,
+ int verbo)
+{
+ struct section_addr_info *local_addr = NULL;
struct cleanup *old_chain;
+ gdb_assert (! (addrs && offsets));
+
init_entry_point_info (objfile);
find_sym_fns (objfile);
+ if (objfile->sf == NULL)
+ return; /* No symbols. */
+
/* Make sure that partially constructed symbol tables will be cleaned up
if an error occurs during symbol reading. */
- old_chain = make_cleanup (free_objfile, objfile);
+ old_chain = make_cleanup_free_objfile (objfile);
+
+ /* If ADDRS and OFFSETS are both NULL, put together a dummy address
+ list. We now establish the convention that an addr of zero means
+ no load address was specified. */
+ if (! addrs && ! offsets)
+ {
+ local_addr
+ = alloc_section_addr_info (bfd_count_sections (objfile->obfd));
+ make_cleanup (xfree, local_addr);
+ addrs = local_addr;
+ }
+
+ /* Now either addrs or offsets is non-zero. */
- if (mainline)
+ if (mainline)
{
/* We will modify the main symbol table, make sure that all its users
- will be cleaned up if an error occurs during symbol reading. */
- make_cleanup (clear_symtab_users, 0);
+ will be cleaned up if an error occurs during symbol reading. */
+ make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/);
/* Since no error yet, throw away the old symbol table. */
}
/* Currently we keep symbols from the add-symbol-file command.
- If the user wants to get rid of them, they should do "symbol-file"
- without arguments first. Not sure this is the best behavior
- (PR 2207). */
+ If the user wants to get rid of them, they should do "symbol-file"
+ without arguments first. Not sure this is the best behavior
+ (PR 2207). */
- (*objfile -> sf -> sym_new_init) (objfile);
+ (*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. */
+ and assume that <addr> is where that got loaded.
- if (mainline)
+ We no longer warn if the lowest section is not a text segment (as
+ happens for the PA64 port. */
+ if (!mainline && addrs && addrs->other[0].name)
{
- 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
-
- if (lowest_sect == 0)
- warning ("no loadable sections found in added symbol-file %s",
+ asection *lower_sect;
+ asection *sect;
+ CORE_ADDR lower_offset;
+ int i;
+
+ /* Find lowest loadable section to be used as starting point for
+ continguous sections. FIXME!! won't work without call to find
+ .text first, but this assumes text is lowest section. */
+ lower_sect = bfd_get_section_by_name (objfile->obfd, ".text");
+ if (lower_sect == NULL)
+ bfd_map_over_sections (objfile->obfd, find_lowest_section,
+ &lower_sect);
+ if (lower_sect == NULL)
+ 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)))
- /* FIXME-32x64--assumes bfd_vma fits in long. */
- warning ("Lowest section in %s is %s at 0x%lx",
- objfile->name,
- bfd_section_name (objfile->obfd, lowest_sect),
- (unsigned long) bfd_section_vma (objfile->obfd, lowest_sect));
-
- if (lowest_sect)
- addr -= bfd_section_vma (objfile->obfd, lowest_sect);
+ else
+ if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) == 0)
+ warning (_("Lowest section in %s is %s at %s"),
+ objfile->name,
+ bfd_section_name (objfile->obfd, lower_sect),
+ paddr (bfd_section_vma (objfile->obfd, lower_sect)));
+ if (lower_sect != NULL)
+ lower_offset = bfd_section_vma (objfile->obfd, lower_sect);
+ else
+ lower_offset = 0;
+
+ /* Calculate offsets for the loadable sections.
+ FIXME! Sections must be in order of increasing loadable section
+ so that contiguous sections can use the lower-offset!!!
+
+ Adjust offsets if the segments are not contiguous.
+ If the section is contiguous, its offset should be set to
+ the offset of the highest loadable section lower than it
+ (the loadable section directly below it in memory).
+ this_offset = lower_offset = lower_addr - lower_orig_addr */
+
+ for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++)
+ {
+ if (addrs->other[i].addr != 0)
+ {
+ sect = bfd_get_section_by_name (objfile->obfd,
+ addrs->other[i].name);
+ if (sect)
+ {
+ addrs->other[i].addr
+ -= bfd_section_vma (objfile->obfd, sect);
+ lower_offset = addrs->other[i].addr;
+ /* This is the index used by BFD. */
+ addrs->other[i].sectindex = sect->index ;
+ }
+ else
+ {
+ warning (_("section %s not found in %s"),
+ addrs->other[i].name,
+ objfile->name);
+ addrs->other[i].addr = 0;
+ }
+ }
+ else
+ addrs->other[i].addr = lower_offset;
+ }
}
/* 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_init) (objfile);
+ clear_complaints (&symfile_complaints, 1, verbo);
+
+ if (addrs)
+ (*objfile->sf->sym_offsets) (objfile, addrs);
+ else
+ {
+ size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets);
+
+ /* Just copy in the offset table directly as given to us. */
+ objfile->num_sections = num_offsets;
+ objfile->section_offsets
+ = ((struct section_offsets *)
+ obstack_alloc (&objfile->objfile_obstack, size));
+ memcpy (objfile->section_offsets, offsets, size);
- section_offsets = (*objfile -> sf -> sym_offsets) (objfile, addr);
- objfile->section_offsets = section_offsets;
+ init_objfile_sect_indices (objfile);
+ }
-#ifndef IBM6000_TARGET
+#ifndef DEPRECATED_IBM6000_TARGET
/* This is a SVR4/SunOS specific hack, I think. In any event, it
screws RS/6000. sym_offsets should be doing this sort of thing,
because it knows the mapping between bfd sections and
Section offsets are built similarly, except that they are built
by adding addr in all cases because there is no clear mapping
from section_offsets into actual sections. Note that solib.c
- has a different algorythm for finding section offsets.
+ has a different algorithm for finding section offsets.
These should probably all be collapsed into some target
independent form of shared library support. FIXME. */
- if (addr)
+ if (addrs)
{
struct obj_section *s;
- for (s = objfile->sections; s < objfile->sections_end; ++s)
+ /* Map section offsets in "addr" back to the object's
+ sections by comparing the section names with bfd's
+ section names. Then adjust the section address by
+ the offset. */ /* for gdb/13815 */
+
+ ALL_OBJFILE_OSECTIONS (objfile, s)
{
+ CORE_ADDR s_addr = 0;
+ int i;
+
+ for (i = 0;
+ !s_addr && i < addrs->num_sections && addrs->other[i].name;
+ i++)
+ if (strcmp (bfd_section_name (s->objfile->obfd,
+ s->the_bfd_section),
+ addrs->other[i].name) == 0)
+ s_addr = addrs->other[i].addr; /* end added for gdb/13815 */
+
s->addr -= s->offset;
- s->addr += addr;
+ s->addr += s_addr;
s->endaddr -= s->offset;
- s->endaddr += addr;
- s->offset += addr;
+ s->endaddr += s_addr;
+ s->offset += s_addr;
}
}
-#endif /* not IBM6000_TARGET */
-
- (*objfile -> sf -> sym_read) (objfile, section_offsets, mainline);
+#endif /* not DEPRECATED_IBM6000_TARGET */
- if (!have_partial_symbols () && !have_full_symbols ())
- {
- wrap_here ("");
- printf_filtered ("(no debugging symbols found)...");
- wrap_here ("");
- }
+ (*objfile->sf->sym_read) (objfile, mainline);
/* Don't allow char * to have a typename (else would get caddr_t).
Ditto void *. FIXME: Check whether this is now done by all the
/* Mark the objfile has having had initial symbol read attempted. Note
that this does not mean we found any symbols... */
- objfile -> flags |= OBJF_SYMS;
+ objfile->flags |= OBJF_SYMS;
/* Discard cleanups as symbol reading was successful. */
/* Perform required actions 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;
+new_symfile_objfile (struct objfile *objfile, int mainline, int verbo)
{
/* If this is the main symbol file we have to clean up all users of the
}
/* We're done reading the symbol file; finish off complaints. */
- clear_complaints (0, verbo);
+ clear_complaints (&symfile_complaints, 0, verbo);
}
/* Process a symbol file, as either the main file or as a dynamically
loaded file.
- NAME is the file name (which will be tilde-expanded and made
- absolute herein) (but we don't free or modify NAME itself).
- FROM_TTY says how verbose to be. MAINLINE specifies whether this
- is the main symbol file, or whether it's an extra symbol file such
- as dynamically loaded code. If !mainline, ADDR is the address
- where the text segment was loaded.
+ ABFD is a BFD already open on the file, as from symfile_bfd_open.
+ This BFD will be closed on error, and is always consumed by this function.
+
+ FROM_TTY says how verbose to be.
+
+ MAINLINE specifies whether this is the main symbol file, or whether
+ it's an extra symbol file such as dynamically loaded code.
+
+ ADDRS, OFFSETS, and NUM_OFFSETS are as described for
+ syms_from_objfile, above. ADDRS is ignored when MAINLINE is
+ non-zero.
Upon success, returns a pointer to the objfile that was added.
Upon failure, jumps back to command level (never returns). */
-
-struct objfile *
-symbol_file_add (name, from_tty, addr, mainline, mapped, readnow)
- char *name;
- int from_tty;
- CORE_ADDR addr;
- int mainline;
- int mapped;
- int readnow;
+static struct objfile *
+symbol_file_add_with_addrs_or_offsets (bfd *abfd, int from_tty,
+ struct section_addr_info *addrs,
+ struct section_offsets *offsets,
+ int num_offsets,
+ int mainline, int flags)
{
struct objfile *objfile;
struct partial_symtab *psymtab;
- bfd *abfd;
+ char *debugfile;
+ struct section_addr_info *orig_addrs = NULL;
+ struct cleanup *my_cleanups;
+ const char *name = bfd_get_filename (abfd);
- /* Open a bfd for the file, and give user a chance to burp if we'd be
- interactively wiping out any existing symbols. */
+ my_cleanups = make_cleanup_bfd_close (abfd);
- abfd = symfile_bfd_open (name);
+ /* Give user a chance to burp if we'd be
+ interactively wiping out any existing symbols. */
if ((have_full_symbols () || have_partial_symbols ())
&& mainline
&& from_tty
&& !query ("Load new symbol table from \"%s\"? ", name))
- error ("Not confirmed.");
-
- objfile = allocate_objfile (abfd, mapped);
+ error (_("Not confirmed."));
- /* If the objfile uses a mapped symbol file, and we have a psymtab for
- it, then skip reading any symbols at this time. */
+ objfile = allocate_objfile (abfd, flags);
+ discard_cleanups (my_cleanups);
- if ((objfile -> flags & OBJF_MAPPED) && (objfile -> flags & OBJF_SYMS))
+ if (addrs)
{
- /* We mapped in an existing symbol table file that already has had
- initial symbol reading performed, so we can skip that part. Notify
- the user that instead of reading the symbols, they have been mapped.
- */
- if (from_tty || info_verbose)
- {
- printf_filtered ("Mapped symbols for %s...", name);
- wrap_here ("");
- gdb_flush (gdb_stdout);
- }
- init_entry_point_info (objfile);
- find_sym_fns (objfile);
+ orig_addrs = copy_section_addr_info (addrs);
+ make_cleanup_free_section_addr_info (orig_addrs);
}
- else
+
+ /* We either created a new mapped symbol table, mapped an existing
+ symbol table file which has not had initial symbol reading
+ performed, or need to read an unmapped symbol table. */
+ if (from_tty || info_verbose)
{
- /* We either created a new mapped symbol table, mapped an existing
- symbol table file which has not had initial symbol reading
- performed, or need to read an unmapped symbol table. */
- if (from_tty || info_verbose)
+ if (deprecated_pre_add_symbol_hook)
+ deprecated_pre_add_symbol_hook (name);
+ else
{
- printf_filtered ("Reading symbols from %s...", name);
+ printf_unfiltered (_("Reading symbols from %s..."), name);
wrap_here ("");
gdb_flush (gdb_stdout);
}
- syms_from_objfile (objfile, addr, mainline, from_tty);
- }
+ }
+ syms_from_objfile (objfile, addrs, offsets, num_offsets,
+ 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
all partial symbol tables for this objfile if so. */
- if (readnow || readnow_symbol_files)
+ if ((flags & OBJF_READNOW) || readnow_symbol_files)
{
if (from_tty || info_verbose)
{
- printf_filtered ("expanding to full symbols...");
+ printf_unfiltered (_("expanding to full symbols..."));
wrap_here ("");
gdb_flush (gdb_stdout);
}
- for (psymtab = objfile -> psymtabs;
+ for (psymtab = objfile->psymtabs;
psymtab != NULL;
- psymtab = psymtab -> next)
+ psymtab = psymtab->next)
{
psymtab_to_symtab (psymtab);
}
}
+ debugfile = find_separate_debug_file (objfile);
+ if (debugfile)
+ {
+ if (addrs != NULL)
+ {
+ objfile->separate_debug_objfile
+ = symbol_file_add (debugfile, from_tty, orig_addrs, 0, flags);
+ }
+ else
+ {
+ objfile->separate_debug_objfile
+ = symbol_file_add (debugfile, from_tty, NULL, 0, flags);
+ }
+ objfile->separate_debug_objfile->separate_debug_objfile_backlink
+ = objfile;
+
+ /* Put the separate debug object before the normal one, this is so that
+ usage of the ALL_OBJFILES_SAFE macro will stay safe. */
+ put_objfile_before (objfile->separate_debug_objfile, objfile);
+
+ xfree (debugfile);
+ }
+
+ if (!have_partial_symbols () && !have_full_symbols ())
+ {
+ wrap_here ("");
+ printf_filtered (_("(no debugging symbols found)"));
+ if (from_tty || info_verbose)
+ printf_filtered ("...");
+ else
+ printf_filtered ("\n");
+ wrap_here ("");
+ }
+
if (from_tty || info_verbose)
{
- printf_filtered ("done.\n");
- gdb_flush (gdb_stdout);
+ if (deprecated_post_add_symbol_hook)
+ deprecated_post_add_symbol_hook ();
+ else
+ {
+ printf_unfiltered (_("done.\n"));
+ }
}
+ /* We print some messages regardless of whether 'from_tty ||
+ info_verbose' is true, so make sure they go out at the right
+ time. */
+ gdb_flush (gdb_stdout);
+
+ do_cleanups (my_cleanups);
+
+ if (objfile->sf == NULL)
+ return objfile; /* No symbols. */
+
new_symfile_objfile (objfile, mainline, from_tty);
+ if (deprecated_target_new_objfile_hook)
+ deprecated_target_new_objfile_hook (objfile);
+
+ bfd_cache_close_all ();
return (objfile);
}
-/* This is the symbol-file command. Read the file, analyze its
- symbols, and add a struct symtab to a symtab list. The syntax of
- the command is rather bizarre--(1) buildargv implements various
- quoting conventions which are undocumented and have little or
- nothing in common with the way things are quoted (or not quoted)
- elsewhere in GDB, (2) options are used, which are not generally
- used in GDB (perhaps "set mapped on", "set readnow on" would be
- better), (3) the order of options matters, which is contrary to GNU
- conventions (because it is confusing and inconvenient). */
-void
-symbol_file_command (args, from_tty)
- char *args;
- int from_tty;
+/* Process the symbol file ABFD, as either the main file or as a
+ dynamically loaded file.
+
+ See symbol_file_add_with_addrs_or_offsets's comments for
+ details. */
+struct objfile *
+symbol_file_add_from_bfd (bfd *abfd, int from_tty,
+ struct section_addr_info *addrs,
+ int mainline, int flags)
{
- char **argv;
- char *name = NULL;
- CORE_ADDR text_relocation = 0; /* text_relocation */
- struct cleanup *cleanups;
- int mapped = 0;
- int readnow = 0;
+ return symbol_file_add_with_addrs_or_offsets (abfd,
+ from_tty, addrs, 0, 0,
+ mainline, flags);
+}
- dont_repeat ();
- if (args == NULL)
- {
- if ((have_full_symbols () || have_partial_symbols ())
- && from_tty
- && !query ("Discard symbol table from `%s'? ",
- symfile_objfile -> name))
- error ("Not confirmed.");
- free_all_objfiles ();
- symfile_objfile = NULL;
- if (from_tty)
- {
- printf_unfiltered ("No symbol file now.\n");
- }
- }
- else
- {
- if ((argv = buildargv (args)) == NULL)
- {
- nomem (0);
- }
- cleanups = make_cleanup (freeargv, (char *) argv);
- while (*argv != NULL)
- {
- if (STREQ (*argv, "-mapped"))
- {
- mapped = 1;
- }
- else if (STREQ (*argv, "-readnow"))
- {
- readnow = 1;
- }
- else if (**argv == '-')
- {
- error ("unknown option `%s'", *argv);
- }
- else
- {
- char *p;
+/* Process a symbol file, as either the main file or as a dynamically
+ loaded file. See symbol_file_add_with_addrs_or_offsets's comments
+ for details. */
+struct objfile *
+symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs,
+ int mainline, int flags)
+{
+ return symbol_file_add_from_bfd (symfile_bfd_open (name), from_tty,
+ addrs, mainline, flags);
+}
- name = *argv;
- /* this is for rombug remote only, to get the text relocation by
- using link command */
- p = strrchr(name, '/');
- if (p != NULL) p++;
- else p = name;
+/* Call symbol_file_add() with default values and update whatever is
+ affected by the loading of a new main().
+ Used when the file is supplied in the gdb command line
+ and by some targets with special loading requirements.
+ The auxiliary function, symbol_file_add_main_1(), has the flags
+ argument for the switches that can only be specified in the symbol_file
+ command itself. */
- target_link(p, &text_relocation);
+void
+symbol_file_add_main (char *args, int from_tty)
+{
+ symbol_file_add_main_1 (args, from_tty, 0);
+}
- if (text_relocation == (CORE_ADDR)0)
- return;
- else if (text_relocation == (CORE_ADDR)-1)
- symbol_file_add (name, from_tty, (CORE_ADDR)0, 1, mapped,
- readnow);
- else
- symbol_file_add (name, from_tty, (CORE_ADDR)text_relocation,
- 0, mapped, readnow);
+static void
+symbol_file_add_main_1 (char *args, int from_tty, int flags)
+{
+ symbol_file_add (args, from_tty, NULL, 1, flags);
- /* Getting new symbols may change our opinion about what is
- frameless. */
- reinit_frame_cache ();
+ /* Getting new symbols may change our opinion about
+ what is frameless. */
+ reinit_frame_cache ();
+
+ set_initial_language ();
+}
+
+void
+symbol_file_clear (int from_tty)
+{
+ if ((have_full_symbols () || have_partial_symbols ())
+ && from_tty
+ && (symfile_objfile
+ ? !query (_("Discard symbol table from `%s'? "),
+ symfile_objfile->name)
+ : !query (_("Discard symbol table? "))))
+ error (_("Not confirmed."));
+ free_all_objfiles ();
+
+ /* solib descriptors may have handles to objfiles. Since their
+ storage has just been released, we'd better wipe the solib
+ descriptors as well.
+ */
+#if defined(SOLIB_RESTART)
+ SOLIB_RESTART ();
+#endif
+
+ symfile_objfile = NULL;
+ if (from_tty)
+ printf_unfiltered (_("No symbol file now.\n"));
+}
+
+static char *
+get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out)
+{
+ asection *sect;
+ bfd_size_type debuglink_size;
+ unsigned long crc32;
+ char *contents;
+ int crc_offset;
+ unsigned char *p;
+
+ sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink");
+
+ if (sect == NULL)
+ return NULL;
+
+ debuglink_size = bfd_section_size (objfile->obfd, sect);
+
+ contents = xmalloc (debuglink_size);
+ bfd_get_section_contents (objfile->obfd, sect, contents,
+ (file_ptr)0, (bfd_size_type)debuglink_size);
+
+ /* Crc value is stored after the filename, aligned up to 4 bytes. */
+ crc_offset = strlen (contents) + 1;
+ crc_offset = (crc_offset + 3) & ~3;
+
+ crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset));
+
+ *crc32_out = crc32;
+ return contents;
+}
+
+static int
+separate_debug_file_exists (const char *name, unsigned long crc)
+{
+ unsigned long file_crc = 0;
+ int fd;
+ char buffer[8*1024];
+ int count;
+
+ fd = open (name, O_RDONLY | O_BINARY);
+ if (fd < 0)
+ return 0;
+
+ while ((count = read (fd, buffer, sizeof (buffer))) > 0)
+ file_crc = gnu_debuglink_crc32 (file_crc, buffer, count);
+
+ close (fd);
+
+ return crc == file_crc;
+}
+
+static char *debug_file_directory = NULL;
+static void
+show_debug_file_directory (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+The directory where separate debug symbols are searched for is \"%s\".\n"),
+ value);
+}
+
+#if ! defined (DEBUG_SUBDIRECTORY)
+#define DEBUG_SUBDIRECTORY ".debug"
+#endif
+
+static char *
+find_separate_debug_file (struct objfile *objfile)
+{
+ asection *sect;
+ char *basename;
+ char *dir;
+ char *debugfile;
+ char *name_copy;
+ bfd_size_type debuglink_size;
+ unsigned long crc32;
+ int i;
+
+ basename = get_debug_link_info (objfile, &crc32);
+
+ if (basename == NULL)
+ return NULL;
- set_initial_language ();
+ dir = xstrdup (objfile->name);
+
+ /* Strip off the final filename part, leaving the directory name,
+ followed by a slash. Objfile names should always be absolute and
+ tilde-expanded, so there should always be a slash in there
+ somewhere. */
+ for (i = strlen(dir) - 1; i >= 0; i--)
+ {
+ if (IS_DIR_SEPARATOR (dir[i]))
+ break;
+ }
+ gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i]));
+ dir[i+1] = '\0';
+
+ debugfile = alloca (strlen (debug_file_directory) + 1
+ + strlen (dir)
+ + strlen (DEBUG_SUBDIRECTORY)
+ + strlen ("/")
+ + strlen (basename)
+ + 1);
+
+ /* First try in the same directory as the original file. */
+ strcpy (debugfile, dir);
+ strcat (debugfile, basename);
+
+ if (separate_debug_file_exists (debugfile, crc32))
+ {
+ xfree (basename);
+ xfree (dir);
+ return xstrdup (debugfile);
+ }
+
+ /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */
+ strcpy (debugfile, dir);
+ strcat (debugfile, DEBUG_SUBDIRECTORY);
+ strcat (debugfile, "/");
+ strcat (debugfile, basename);
+
+ if (separate_debug_file_exists (debugfile, crc32))
+ {
+ xfree (basename);
+ xfree (dir);
+ return xstrdup (debugfile);
+ }
+
+ /* Then try in the global debugfile directory. */
+ strcpy (debugfile, debug_file_directory);
+ strcat (debugfile, "/");
+ strcat (debugfile, dir);
+ strcat (debugfile, basename);
+
+ if (separate_debug_file_exists (debugfile, crc32))
+ {
+ xfree (basename);
+ xfree (dir);
+ return xstrdup (debugfile);
+ }
+
+ xfree (basename);
+ xfree (dir);
+ return NULL;
+}
+
+
+/* This is the symbol-file command. Read the file, analyze its
+ symbols, and add a struct symtab to a symtab list. The syntax of
+ the command is rather bizarre:
+
+ 1. The function buildargv implements various quoting conventions
+ which are undocumented and have little or nothing in common with
+ the way things are quoted (or not quoted) elsewhere in GDB.
+
+ 2. Options are used, which are not generally used in GDB (perhaps
+ "set mapped on", "set readnow on" would be better)
+
+ 3. The order of options matters, which is contrary to GNU
+ conventions (because it is confusing and inconvenient). */
+
+void
+symbol_file_command (char *args, int from_tty)
+{
+ dont_repeat ();
+
+ if (args == NULL)
+ {
+ symbol_file_clear (from_tty);
+ }
+ else
+ {
+ char **argv = buildargv (args);
+ int flags = OBJF_USERLOADED;
+ struct cleanup *cleanups;
+ char *name = NULL;
+
+ if (argv == NULL)
+ nomem (0);
+
+ cleanups = make_cleanup_freeargv (argv);
+ while (*argv != NULL)
+ {
+ if (strcmp (*argv, "-readnow") == 0)
+ flags |= OBJF_READNOW;
+ else if (**argv == '-')
+ error (_("unknown option `%s'"), *argv);
+ else
+ {
+ symbol_file_add_main_1 (*argv, from_tty, flags);
+ name = *argv;
}
+
argv++;
}
if (name == NULL)
- {
- error ("no symbol file name was specified");
- }
+ error (_("no symbol file name was specified"));
+
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. */
+ FIXME: 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. */
static void
-set_initial_language ()
+set_initial_language (void)
{
struct partial_symtab *pst;
- enum language lang = language_unknown;
+ enum language lang = language_unknown;
pst = find_main_psymtab ();
if (pst != NULL)
{
- if (pst -> filename != NULL)
- {
- lang = deduce_language_from_filename (pst -> filename);
- }
+ if (pst->filename != NULL)
+ lang = deduce_language_from_filename (pst->filename);
+
if (lang == language_unknown)
{
- /* Make C the default language */
- lang = language_c;
+ /* Make C the default language */
+ lang = language_c;
}
+
set_language (lang);
- expected_language = current_language; /* Don't warn the user */
+ 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).
- In case of trouble, error() is called. */
+/* Open the file specified by NAME and hand it off to BFD for
+ preliminary analysis. Return a newly initialized bfd *, which
+ includes a newly malloc'd` copy of NAME (tilde-expanded and made
+ absolute). In case of trouble, error() is called. */
-static bfd *
-symfile_bfd_open (name)
- char *name;
+bfd *
+symfile_bfd_open (char *name)
{
bfd *sym_bfd;
int desc;
char *absolute_name;
- name = tilde_expand (name); /* Returns 1st new malloc'd copy */
+ name = tilde_expand (name); /* Returns 1st new malloc'd copy. */
/* Look down path for it, allocate 2nd new malloc'd copy. */
- desc = openp (getenv ("PATH"), 1, name, O_RDONLY | O_BINARY, 0, &absolute_name);
+ desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name,
+ O_RDONLY | O_BINARY, 0, &absolute_name);
+#if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__)
+ if (desc < 0)
+ {
+ char *exename = alloca (strlen (name) + 5);
+ strcat (strcpy (exename, name), ".exe");
+ desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename,
+ O_RDONLY | O_BINARY, 0, &absolute_name);
+ }
+#endif
if (desc < 0)
{
- make_cleanup (free, name);
+ make_cleanup (xfree, name);
perror_with_name (name);
}
- 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, gnutarget, desc);
+ /* Free 1st new malloc'd copy, but keep the 2nd malloc'd copy in
+ bfd. It'll be freed in free_objfile(). */
+ xfree (name);
+ name = absolute_name;
+
+ sym_bfd = bfd_fopen (name, gnutarget, FOPEN_RB, desc);
if (!sym_bfd)
{
close (desc);
- make_cleanup (free, name);
- error ("\"%s\": can't open to read symbols: %s.", name,
+ make_cleanup (xfree, name);
+ error (_("\"%s\": can't open to read symbols: %s."), name,
bfd_errmsg (bfd_get_error ()));
}
- sym_bfd->cacheable = true;
+ bfd_set_cacheable (sym_bfd, 1);
if (!bfd_check_format (sym_bfd, bfd_object))
{
- bfd_close (sym_bfd); /* This also closes desc */
- make_cleanup (free, name);
- error ("\"%s\": can't read symbols: %s.", name,
+ /* FIXME: should be checking for errors from bfd_close (for one
+ thing, on error it does not free all the storage associated
+ with the bfd). */
+ bfd_close (sym_bfd); /* This also closes desc. */
+ make_cleanup (xfree, name);
+ error (_("\"%s\": can't read symbols: %s."), name,
bfd_errmsg (bfd_get_error ()));
}
- return (sym_bfd);
+ return sym_bfd;
}
-/* Link a new symtab_fns into the global symtab_fns list. Called on gdb
- startup by the _initialize routine in each object file format reader,
- to register information about each format the the reader is prepared
- to handle. */
+/* Return the section index for SECTION_NAME on OBJFILE. Return -1 if
+ the section was not found. */
+
+int
+get_section_index (struct objfile *objfile, char *section_name)
+{
+ asection *sect = bfd_get_section_by_name (objfile->obfd, section_name);
+
+ if (sect)
+ return sect->index;
+ else
+ return -1;
+}
+
+/* Link SF into the global symtab_fns list. Called on startup by the
+ _initialize routine in each object file format reader, to register
+ information about each format the the reader is prepared to
+ handle. */
void
-add_symtab_fns (sf)
- struct sym_fns *sf;
+add_symtab_fns (struct sym_fns *sf)
{
sf->next = symtab_fns;
symtab_fns = sf;
}
-
-/* Initialize to read symbols from the symbol file sym_bfd. It either
- returns or calls error(). The result is an initialized struct sym_fns
- in the objfile structure, that contains cached information about the
- symbol file. */
+/* Initialize OBJFILE to read symbols from its associated BFD. It
+ either returns or calls error(). The result is an initialized
+ struct sym_fns in the objfile structure, that contains cached
+ information about the symbol file. */
static void
-find_sym_fns (objfile)
- struct objfile *objfile;
+find_sym_fns (struct objfile *objfile)
{
struct sym_fns *sf;
- enum bfd_flavour our_flavour = bfd_get_flavour (objfile -> obfd);
- char *our_target = bfd_get_target (objfile -> obfd);
+ enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd);
+ char *our_target = bfd_get_target (objfile->obfd);
- /* Special kludge for RS/6000. See xcoffread.c. */
- if (STREQ (our_target, "aixcoff-rs6000"))
- our_flavour = (enum bfd_flavour)-1;
+ if (our_flavour == bfd_target_srec_flavour
+ || our_flavour == bfd_target_ihex_flavour
+ || our_flavour == bfd_target_tekhex_flavour)
+ return; /* No symbols. */
- /* Special kludge for apollo. See dstread.c. */
- if (STREQN (our_target, "apollo", 6))
- our_flavour = (enum bfd_flavour)-2;
-
- for (sf = symtab_fns; sf != NULL; sf = sf -> next)
+ for (sf = symtab_fns; sf != NULL; sf = sf->next)
{
- if (our_flavour == sf -> sym_flavour)
+ if (our_flavour == sf->sym_flavour)
{
- objfile -> sf = sf;
+ objfile->sf = sf;
return;
}
}
- error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.",
- bfd_get_target (objfile -> obfd));
+
+ error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."),
+ bfd_get_target (objfile->obfd));
}
\f
+
/* This function runs the load command of our current target. */
static void
-load_command (arg, from_tty)
- char *arg;
- int from_tty;
+load_command (char *arg, int from_tty)
{
if (arg == NULL)
arg = get_exec_file (1);
target_load (arg, from_tty);
+
+ /* After re-loading the executable, we don't really know which
+ overlays are mapped any more. */
+ overlay_cache_invalid = 1;
}
/* This version of "load" should be usable for any target. Currently
to worry about finding it, and (b) On VMS, fork() is very slow and so
we don't want to run a subprocess. On the other hand, I'm not sure how
performance compares. */
+
+static int download_write_size = 512;
+static void
+show_download_write_size (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+The write size used when downloading a program is %s.\n"),
+ value);
+}
+static int validate_download = 0;
+
+/* Callback service function for generic_load (bfd_map_over_sections). */
+
+static void
+add_section_size_callback (bfd *abfd, asection *asec, void *data)
+{
+ bfd_size_type *sum = data;
+
+ *sum += bfd_get_section_size (asec);
+}
+
+/* Opaque data for load_section_callback. */
+struct load_section_data {
+ unsigned long load_offset;
+ unsigned long write_count;
+ unsigned long data_count;
+ bfd_size_type total_size;
+};
+
+/* Callback service function for generic_load (bfd_map_over_sections). */
+
+static void
+load_section_callback (bfd *abfd, asection *asec, void *data)
+{
+ struct load_section_data *args = data;
+
+ if (bfd_get_section_flags (abfd, asec) & SEC_LOAD)
+ {
+ bfd_size_type size = bfd_get_section_size (asec);
+ if (size > 0)
+ {
+ char *buffer;
+ struct cleanup *old_chain;
+ CORE_ADDR lma = bfd_section_lma (abfd, asec) + args->load_offset;
+ bfd_size_type block_size;
+ int err;
+ const char *sect_name = bfd_get_section_name (abfd, asec);
+ bfd_size_type sent;
+
+ if (download_write_size > 0 && size > download_write_size)
+ block_size = download_write_size;
+ else
+ block_size = size;
+
+ buffer = xmalloc (size);
+ old_chain = make_cleanup (xfree, buffer);
+
+ /* Is this really necessary? I guess it gives the user something
+ to look at during a long download. */
+ ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n",
+ sect_name, paddr_nz (size), paddr_nz (lma));
+
+ bfd_get_section_contents (abfd, asec, buffer, 0, size);
+
+ sent = 0;
+ do
+ {
+ int len;
+ bfd_size_type this_transfer = size - sent;
+
+ if (this_transfer >= block_size)
+ this_transfer = block_size;
+ len = target_write_memory_partial (lma, buffer,
+ this_transfer, &err);
+ if (err)
+ break;
+ if (validate_download)
+ {
+ /* Broken memories and broken monitors manifest
+ themselves here when bring new computers to
+ life. This doubles already slow downloads. */
+ /* NOTE: cagney/1999-10-18: A more efficient
+ implementation might add a verify_memory()
+ method to the target vector and then use
+ that. remote.c could implement that method
+ using the ``qCRC'' packet. */
+ char *check = xmalloc (len);
+ struct cleanup *verify_cleanups =
+ make_cleanup (xfree, check);
+
+ if (target_read_memory (lma, check, len) != 0)
+ error (_("Download verify read failed at 0x%s"),
+ paddr (lma));
+ if (memcmp (buffer, check, len) != 0)
+ error (_("Download verify compare failed at 0x%s"),
+ paddr (lma));
+ do_cleanups (verify_cleanups);
+ }
+ args->data_count += len;
+ lma += len;
+ buffer += len;
+ args->write_count += 1;
+ sent += len;
+ if (quit_flag
+ || (deprecated_ui_load_progress_hook != NULL
+ && deprecated_ui_load_progress_hook (sect_name, sent)))
+ error (_("Canceled the download"));
+
+ if (deprecated_show_load_progress != NULL)
+ deprecated_show_load_progress (sect_name, sent, size,
+ args->data_count,
+ args->total_size);
+ }
+ while (sent < size);
+
+ if (err != 0)
+ error (_("Memory access error while loading section %s."), sect_name);
+
+ do_cleanups (old_chain);
+ }
+ }
+}
+
void
-generic_load (filename, from_tty)
- char *filename;
- int from_tty;
+generic_load (char *args, int from_tty)
{
- struct cleanup *old_cleanups;
asection *s;
bfd *loadfile_bfd;
+ struct timeval start_time, end_time;
+ char *filename;
+ struct cleanup *old_cleanups;
+ char *offptr;
+ struct load_section_data cbdata;
+ CORE_ADDR entry;
+
+ cbdata.load_offset = 0; /* Offset to add to vma for each section. */
+ cbdata.write_count = 0; /* Number of writes needed. */
+ cbdata.data_count = 0; /* Number of bytes written to target memory. */
+ cbdata.total_size = 0; /* Total size of all bfd sectors. */
+
+ /* Parse the input argument - the user can specify a load offset as
+ a second argument. */
+ filename = xmalloc (strlen (args) + 1);
+ old_cleanups = make_cleanup (xfree, filename);
+ strcpy (filename, args);
+ offptr = strchr (filename, ' ');
+ if (offptr != NULL)
+ {
+ char *endptr;
+
+ cbdata.load_offset = strtoul (offptr, &endptr, 0);
+ if (offptr == endptr)
+ error (_("Invalid download offset:%s."), offptr);
+ *offptr = '\0';
+ }
+ else
+ cbdata.load_offset = 0;
+ /* Open the file for loading. */
loadfile_bfd = bfd_openr (filename, gnutarget);
if (loadfile_bfd == NULL)
{
perror_with_name (filename);
return;
}
- old_cleanups = make_cleanup (bfd_close, loadfile_bfd);
- if (!bfd_check_format (loadfile_bfd, bfd_object))
+ /* FIXME: should be checking for errors from bfd_close (for one thing,
+ on error it does not free all the storage associated with the
+ bfd). */
+ make_cleanup_bfd_close (loadfile_bfd);
+
+ if (!bfd_check_format (loadfile_bfd, bfd_object))
{
- error ("\"%s\" is not an object file: %s", filename,
+ error (_("\"%s\" is not an object file: %s"), filename,
bfd_errmsg (bfd_get_error ()));
}
-
- for (s = loadfile_bfd->sections; s; s = s->next)
- {
- if (s->flags & SEC_LOAD)
- {
- bfd_size_type size;
-
- size = bfd_get_section_size_before_reloc (s);
- if (size > 0)
- {
- char *buffer;
- struct cleanup *old_chain;
- bfd_vma vma;
-
- buffer = xmalloc (size);
- old_chain = make_cleanup (free, buffer);
- vma = bfd_get_section_vma (loadfile_bfd, s);
+ bfd_map_over_sections (loadfile_bfd, add_section_size_callback,
+ (void *) &cbdata.total_size);
- /* Is this really necessary? I guess it gives the user something
- to look at during a long download. */
- printf_filtered ("Loading section %s, size 0x%lx vma ",
- bfd_get_section_name (loadfile_bfd, s),
- (unsigned long) size);
- print_address_numeric (vma, 1, gdb_stdout);
- printf_filtered ("\n");
+ gettimeofday (&start_time, NULL);
- bfd_get_section_contents (loadfile_bfd, s, buffer, 0, size);
+ bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata);
- target_write_memory (vma, buffer, size);
-
- do_cleanups (old_chain);
- }
- }
- }
+ gettimeofday (&end_time, NULL);
+ entry = bfd_get_start_address (loadfile_bfd);
+ ui_out_text (uiout, "Start address ");
+ ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry));
+ ui_out_text (uiout, ", load size ");
+ ui_out_field_fmt (uiout, "load-size", "%lu", cbdata.data_count);
+ ui_out_text (uiout, "\n");
/* We were doing this in remote-mips.c, I suspect it is right
for other targets too. */
- write_pc (loadfile_bfd->start_address);
+ write_pc (entry);
- /* FIXME: are we supposed to call symbol_file_add or not? According to
- a comment from remote-mips.c (where a call to symbol_file_add was
- commented out), making the call confuses GDB if more than one file is
- loaded in. remote-nindy.c had no call to symbol_file_add, but remote-vx.c
- does. */
+ /* FIXME: are we supposed to call symbol_file_add or not? According
+ to a comment from remote-mips.c (where a call to symbol_file_add
+ was commented out), making the call confuses GDB if more than one
+ file is loaded in. Some targets do (e.g., remote-vx.c) but
+ others don't (or didn't - perhaps they have all been deleted). */
+
+ print_transfer_performance (gdb_stdout, cbdata.data_count,
+ cbdata.write_count, &start_time, &end_time);
do_cleanups (old_cleanups);
}
+/* Report how fast the transfer went. */
+
+/* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being
+ replaced by print_transfer_performance (with a very different
+ function signature). */
+
+void
+report_transfer_performance (unsigned long data_count, time_t start_time,
+ time_t end_time)
+{
+ struct timeval start, end;
+
+ start.tv_sec = start_time;
+ start.tv_usec = 0;
+ end.tv_sec = end_time;
+ end.tv_usec = 0;
+
+ print_transfer_performance (gdb_stdout, data_count, 0, &start, &end);
+}
+
+void
+print_transfer_performance (struct ui_file *stream,
+ unsigned long data_count,
+ unsigned long write_count,
+ const struct timeval *start_time,
+ const struct timeval *end_time)
+{
+ unsigned long time_count;
+
+ /* Compute the elapsed time in milliseconds, as a tradeoff between
+ accuracy and overflow. */
+ time_count = (end_time->tv_sec - start_time->tv_sec) * 1000;
+ time_count += (end_time->tv_usec - start_time->tv_usec) / 1000;
+
+ ui_out_text (uiout, "Transfer rate: ");
+ if (time_count > 0)
+ {
+ ui_out_field_fmt (uiout, "transfer-rate", "%lu",
+ 1000 * (data_count * 8) / time_count);
+ ui_out_text (uiout, " bits/sec");
+ }
+ else
+ {
+ ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8));
+ ui_out_text (uiout, " bits in <1 sec");
+ }
+ if (write_count > 0)
+ {
+ ui_out_text (uiout, ", ");
+ ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count);
+ ui_out_text (uiout, " bytes/write");
+ }
+ ui_out_text (uiout, ".\n");
+}
+
/* This function allows the addition of incrementally linked object files.
It does not modify any state in the target, only in the debugger. */
+/* Note: ezannoni 2000-04-13 This function/command used to have a
+ special case syntax for the rombug target (Rombug is the boot
+ monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the
+ rombug case, the user doesn't need to supply a text address,
+ instead a call to target_link() (in target.c) would supply the
+ value to use. We are now discontinuing this type of ad hoc syntax. */
-/* ARGSUSED */
static void
-add_symbol_file_command (args, from_tty)
- char *args;
- int from_tty;
+add_symbol_file_command (char *args, int from_tty)
{
- char *name = NULL;
- CORE_ADDR text_addr;
+ char *filename = NULL;
+ int flags = OBJF_USERLOADED;
char *arg;
- int readnow = 0;
- int mapped = 0;
-
+ int expecting_option = 0;
+ int section_index = 0;
+ int argcnt = 0;
+ int sec_num = 0;
+ int i;
+ int expecting_sec_name = 0;
+ int expecting_sec_addr = 0;
+
+ struct sect_opt
+ {
+ char *name;
+ char *value;
+ };
+
+ struct section_addr_info *section_addrs;
+ struct sect_opt *sect_opts = NULL;
+ size_t num_sect_opts = 0;
+ struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL);
+
+ num_sect_opts = 16;
+ sect_opts = (struct sect_opt *) xmalloc (num_sect_opts
+ * sizeof (struct sect_opt));
+
dont_repeat ();
if (args == NULL)
- {
- error ("add-symbol-file takes a file name and an address");
- }
+ error (_("add-symbol-file takes a file name and an address"));
/* Make a copy of the string that we can safely write into. */
+ args = xstrdup (args);
- args = strdup (args);
- make_cleanup (free, args);
-
- /* Pick off any -option args and the file name. */
-
- while ((*args != '\000') && (name == NULL))
+ while (*args != '\000')
{
- while (isspace (*args)) {args++;}
+ /* Any leading spaces? */
+ while (isspace (*args))
+ args++;
+
+ /* Point arg to the beginning of the argument. */
arg = args;
- while ((*args != '\000') && !isspace (*args)) {args++;}
+
+ /* Move args pointer over the argument. */
+ while ((*args != '\000') && !isspace (*args))
+ args++;
+
+ /* If there are more arguments, terminate arg and
+ proceed past it. */
if (*args != '\000')
+ *args++ = '\000';
+
+ /* Now process the argument. */
+ if (argcnt == 0)
{
- *args++ = '\000';
- }
- if (*arg != '-')
- {
- name = arg;
- }
- else if (STREQ (arg, "-mapped"))
- {
- mapped = 1;
- }
- else if (STREQ (arg, "-readnow"))
- {
- readnow = 1;
+ /* The first argument is the file name. */
+ filename = tilde_expand (arg);
+ make_cleanup (xfree, filename);
}
else
- {
- error ("unknown option `%s'", arg);
- }
+ if (argcnt == 1)
+ {
+ /* The second argument is always the text address at which
+ to load the program. */
+ sect_opts[section_index].name = ".text";
+ sect_opts[section_index].value = arg;
+ if (++section_index > num_sect_opts)
+ {
+ num_sect_opts *= 2;
+ sect_opts = ((struct sect_opt *)
+ xrealloc (sect_opts,
+ num_sect_opts
+ * sizeof (struct sect_opt)));
+ }
+ }
+ else
+ {
+ /* It's an option (starting with '-') or it's an argument
+ to an option */
+
+ if (*arg == '-')
+ {
+ if (strcmp (arg, "-readnow") == 0)
+ flags |= OBJF_READNOW;
+ else if (strcmp (arg, "-s") == 0)
+ {
+ expecting_sec_name = 1;
+ expecting_sec_addr = 1;
+ }
+ }
+ else
+ {
+ if (expecting_sec_name)
+ {
+ sect_opts[section_index].name = arg;
+ expecting_sec_name = 0;
+ }
+ else
+ if (expecting_sec_addr)
+ {
+ sect_opts[section_index].value = arg;
+ expecting_sec_addr = 0;
+ if (++section_index > num_sect_opts)
+ {
+ num_sect_opts *= 2;
+ sect_opts = ((struct sect_opt *)
+ xrealloc (sect_opts,
+ num_sect_opts
+ * sizeof (struct sect_opt)));
+ }
+ }
+ else
+ error (_("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*"));
+ }
+ }
+ argcnt++;
}
- /* After picking off any options and the file name, args should be
- left pointing at the remainder of the command line, which should
- be the address expression to evaluate. */
+ /* Print the prompt for the query below. And save the arguments into
+ a sect_addr_info structure to be passed around to other
+ functions. We have to split this up into separate print
+ statements because hex_string returns a local static
+ string. */
- if (name == NULL)
+ printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename);
+ section_addrs = alloc_section_addr_info (section_index);
+ make_cleanup (xfree, section_addrs);
+ for (i = 0; i < section_index; i++)
{
- error ("add-symbol-file takes a file name");
+ CORE_ADDR addr;
+ char *val = sect_opts[i].value;
+ char *sec = sect_opts[i].name;
+
+ addr = parse_and_eval_address (val);
+
+ /* Here we store the section offsets in the order they were
+ entered on the command line. */
+ section_addrs->other[sec_num].name = sec;
+ section_addrs->other[sec_num].addr = addr;
+ printf_unfiltered ("\t%s_addr = %s\n",
+ sec, hex_string ((unsigned long)addr));
+ sec_num++;
+
+ /* The object's sections are initialized when a
+ call is made to build_objfile_section_table (objfile).
+ This happens in reread_symbols.
+ At this point, we don't know what file type this is,
+ so we can't determine what section names are valid. */
}
- name = tilde_expand (name);
- make_cleanup (free, name);
- if (*args != '\000')
- {
- text_addr = parse_and_eval_address (args);
- }
- else
- {
- target_link(name, &text_addr);
- if (text_addr == (CORE_ADDR)-1)
- error("Don't know how to get text start location for this file");
- }
-
- /* FIXME-32x64: Assumes text_addr fits in a long. */
- if (!query ("add symbol table from file \"%s\" at text_addr = %s?\n",
- name, local_hex_string ((unsigned long)text_addr)))
- error ("Not confirmed.");
+ if (from_tty && (!query ("%s", "")))
+ error (_("Not confirmed."));
- symbol_file_add (name, 0, text_addr, 0, mapped, readnow);
+ symbol_file_add (filename, from_tty, section_addrs, 0, flags);
/* Getting new symbols may change our opinion about what is
frameless. */
reinit_frame_cache ();
+ do_cleanups (my_cleanups);
}
\f
static void
-add_shared_symbol_files_command (args, from_tty)
- char *args;
- int from_tty;
+add_shared_symbol_files_command (char *args, int from_tty)
{
#ifdef ADD_SHARED_SYMBOL_FILES
ADD_SHARED_SYMBOL_FILES (args, from_tty);
#else
- error ("This command is not available in this configuration of GDB.");
-#endif
+ error (_("This command is not available in this configuration of GDB."));
+#endif
}
\f
/* Re-read symbols if a symbol-file has changed. */
void
-reread_symbols ()
+reread_symbols (void)
{
struct objfile *objfile;
long new_modtime;
This routine should then walk down each partial symbol table
and see if the symbol table that it originates from has been changed */
- for (objfile = object_files; objfile; objfile = objfile->next) {
- if (objfile->obfd) {
-#ifdef IBM6000_TARGET
- /* If this object is from a shared library, then you should
- stat on the library name, not member name. */
-
- if (objfile->obfd->my_archive)
- res = stat (objfile->obfd->my_archive->filename, &new_statbuf);
- else
-#endif
- res = stat (objfile->name, &new_statbuf);
- if (res != 0) {
- /* FIXME, should use print_sys_errmsg but it's not filtered. */
- printf_filtered ("`%s' has disappeared; keeping its symbols.\n",
- objfile->name);
- continue;
- }
- new_modtime = new_statbuf.st_mtime;
- if (new_modtime != objfile->mtime)
+ for (objfile = object_files; objfile; objfile = objfile->next)
+ {
+ if (objfile->obfd)
{
- struct cleanup *old_cleanups;
- struct section_offsets *offsets;
- int num_offsets;
- int section_offsets_size;
- char *obfd_filename;
-
- printf_filtered ("`%s' has changed; re-reading symbols.\n",
- objfile->name);
-
- /* There are various functions like symbol_file_add,
- symfile_bfd_open, syms_from_objfile, etc., which might
- appear to do what we want. But they have various other
- effects which we *don't* want. So we just do stuff
- ourselves. We don't worry about mapped files (for one thing,
- any mapped file will be out of date). */
-
- /* If we get an error, blow away this objfile (not sure if
- that is the correct response for things like shared
- libraries). */
- old_cleanups = make_cleanup (free_objfile, objfile);
- /* We need to do this whenever any symbols go away. */
- make_cleanup (clear_symtab_users, 0);
-
- /* Clean up any state BFD has sitting around. We don't need
- to close the descriptor but BFD lacks a way of closing the
- BFD without closing the descriptor. */
- obfd_filename = bfd_get_filename (objfile->obfd);
- if (!bfd_close (objfile->obfd))
- error ("Can't close BFD for %s.", objfile->name);
- objfile->obfd = bfd_openr (obfd_filename, gnutarget);
- if (objfile->obfd == NULL)
- error ("Can't open %s to read symbols.", objfile->name);
- /* bfd_openr sets cacheable to true, which is what we want. */
- if (!bfd_check_format (objfile->obfd, bfd_object))
- error ("Can't read symbols from %s: %s.", objfile->name,
- bfd_errmsg (bfd_get_error ()));
-
- /* Save the offsets, we will nuke them with the rest of the
- psymbol_obstack. */
- num_offsets = objfile->num_sections;
- section_offsets_size =
- sizeof (struct section_offsets)
- + sizeof (objfile->section_offsets->offsets) * num_offsets;
- offsets = (struct section_offsets *) alloca (section_offsets_size);
- memcpy (offsets, objfile->section_offsets, section_offsets_size);
-
- /* Nuke all the state that we will re-read. Much of the following
- code which sets things to NULL really is necessary to tell
- other parts of GDB that there is nothing currently there. */
-
- /* FIXME: Do we have to free a whole linked list, or is this
- enough? */
- if (objfile->global_psymbols.list)
- mfree (objfile->md, objfile->global_psymbols.list);
- objfile->global_psymbols.list = NULL;
- objfile->global_psymbols.next = NULL;
- objfile->global_psymbols.size = 0;
- if (objfile->static_psymbols.list)
- mfree (objfile->md, objfile->static_psymbols.list);
- objfile->static_psymbols.list = NULL;
- objfile->static_psymbols.next = NULL;
- objfile->static_psymbols.size = 0;
-
- /* Free the obstacks for non-reusable objfiles */
- obstack_free (&objfile -> psymbol_obstack, 0);
- obstack_free (&objfile -> symbol_obstack, 0);
- obstack_free (&objfile -> type_obstack, 0);
- objfile->sections = NULL;
- objfile->symtabs = NULL;
- objfile->psymtabs = NULL;
- objfile->free_psymtabs = NULL;
- objfile->msymbols = NULL;
- objfile->minimal_symbol_count= 0;
- objfile->fundamental_types = NULL;
- if (objfile -> sf != NULL)
- {
- (*objfile -> sf -> sym_finish) (objfile);
- }
+#ifdef DEPRECATED_IBM6000_TARGET
+ /* If this object is from a shared library, then you should
+ stat on the library name, not member name. */
- /* We never make this a mapped file. */
- objfile -> md = NULL;
- /* obstack_specify_allocation also initializes the obstack so
- it is empty. */
- obstack_specify_allocation (&objfile -> psymbol_obstack, 0, 0,
- xmalloc, free);
- obstack_specify_allocation (&objfile -> symbol_obstack, 0, 0,
- xmalloc, free);
- obstack_specify_allocation (&objfile -> type_obstack, 0, 0,
- xmalloc, free);
- if (build_objfile_section_table (objfile))
+ if (objfile->obfd->my_archive)
+ res = stat (objfile->obfd->my_archive->filename, &new_statbuf);
+ else
+#endif
+ res = stat (objfile->name, &new_statbuf);
+ if (res != 0)
{
- error ("Can't find the file sections in `%s': %s",
- objfile -> name, bfd_errmsg (bfd_get_error ()));
+ /* FIXME, should use print_sys_errmsg but it's not filtered. */
+ printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"),
+ objfile->name);
+ continue;
}
-
- /* We use the same section offsets as from last time. I'm not
- sure whether that is always correct for shared libraries. */
- objfile->section_offsets = (struct section_offsets *)
- obstack_alloc (&objfile -> psymbol_obstack, section_offsets_size);
- memcpy (objfile->section_offsets, offsets, section_offsets_size);
- objfile->num_sections = num_offsets;
-
- /* What the hell is sym_new_init for, anyway? The concept of
- distinguishing between the main file and additional files
- in this way seems rather dubious. */
- if (objfile == symfile_objfile)
- (*objfile->sf->sym_new_init) (objfile);
-
- (*objfile->sf->sym_init) (objfile);
- clear_complaints (1, 1);
- /* The "mainline" parameter is a hideous hack; I think leaving it
- zero is OK since dbxread.c also does what it needs to do if
- objfile->global_psymbols.size is 0. */
- (*objfile->sf->sym_read) (objfile, objfile->section_offsets, 0);
- if (!have_partial_symbols () && !have_full_symbols ())
+ new_modtime = new_statbuf.st_mtime;
+ if (new_modtime != objfile->mtime)
{
- wrap_here ("");
- printf_filtered ("(no debugging symbols found)\n");
- wrap_here ("");
- }
- objfile -> flags |= OBJF_SYMS;
-
- /* We're done reading the symbol file; finish off complaints. */
- clear_complaints (0, 1);
+ struct cleanup *old_cleanups;
+ struct section_offsets *offsets;
+ int num_offsets;
+ char *obfd_filename;
+
+ printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"),
+ objfile->name);
+
+ /* There are various functions like symbol_file_add,
+ symfile_bfd_open, syms_from_objfile, etc., which might
+ appear to do what we want. But they have various other
+ effects which we *don't* want. So we just do stuff
+ ourselves. We don't worry about mapped files (for one thing,
+ any mapped file will be out of date). */
+
+ /* If we get an error, blow away this objfile (not sure if
+ that is the correct response for things like shared
+ libraries). */
+ old_cleanups = make_cleanup_free_objfile (objfile);
+ /* We need to do this whenever any symbols go away. */
+ make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/);
+
+ /* Clean up any state BFD has sitting around. We don't need
+ to close the descriptor but BFD lacks a way of closing the
+ BFD without closing the descriptor. */
+ obfd_filename = bfd_get_filename (objfile->obfd);
+ if (!bfd_close (objfile->obfd))
+ error (_("Can't close BFD for %s: %s"), objfile->name,
+ bfd_errmsg (bfd_get_error ()));
+ objfile->obfd = bfd_openr (obfd_filename, gnutarget);
+ if (objfile->obfd == NULL)
+ error (_("Can't open %s to read symbols."), objfile->name);
+ /* bfd_openr sets cacheable to true, which is what we want. */
+ if (!bfd_check_format (objfile->obfd, bfd_object))
+ error (_("Can't read symbols from %s: %s."), objfile->name,
+ bfd_errmsg (bfd_get_error ()));
+
+ /* Save the offsets, we will nuke them with the rest of the
+ objfile_obstack. */
+ num_offsets = objfile->num_sections;
+ offsets = ((struct section_offsets *)
+ alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets)));
+ memcpy (offsets, objfile->section_offsets,
+ SIZEOF_N_SECTION_OFFSETS (num_offsets));
+
+ /* Nuke all the state that we will re-read. Much of the following
+ code which sets things to NULL really is necessary to tell
+ other parts of GDB that there is nothing currently there. */
+
+ /* FIXME: Do we have to free a whole linked list, or is this
+ enough? */
+ if (objfile->global_psymbols.list)
+ xfree (objfile->global_psymbols.list);
+ memset (&objfile->global_psymbols, 0,
+ sizeof (objfile->global_psymbols));
+ if (objfile->static_psymbols.list)
+ xfree (objfile->static_psymbols.list);
+ memset (&objfile->static_psymbols, 0,
+ sizeof (objfile->static_psymbols));
+
+ /* Free the obstacks for non-reusable objfiles */
+ bcache_xfree (objfile->psymbol_cache);
+ objfile->psymbol_cache = bcache_xmalloc ();
+ bcache_xfree (objfile->macro_cache);
+ objfile->macro_cache = bcache_xmalloc ();
+ if (objfile->demangled_names_hash != NULL)
+ {
+ htab_delete (objfile->demangled_names_hash);
+ objfile->demangled_names_hash = NULL;
+ }
+ obstack_free (&objfile->objfile_obstack, 0);
+ objfile->sections = NULL;
+ objfile->symtabs = NULL;
+ objfile->psymtabs = NULL;
+ objfile->free_psymtabs = NULL;
+ objfile->cp_namespace_symtab = NULL;
+ objfile->msymbols = NULL;
+ objfile->deprecated_sym_private = NULL;
+ objfile->minimal_symbol_count = 0;
+ memset (&objfile->msymbol_hash, 0,
+ sizeof (objfile->msymbol_hash));
+ memset (&objfile->msymbol_demangled_hash, 0,
+ sizeof (objfile->msymbol_demangled_hash));
+ objfile->fundamental_types = NULL;
+ clear_objfile_data (objfile);
+ if (objfile->sf != NULL)
+ {
+ (*objfile->sf->sym_finish) (objfile);
+ }
+
+ /* We never make this a mapped file. */
+ objfile->md = NULL;
+ objfile->psymbol_cache = bcache_xmalloc ();
+ objfile->macro_cache = bcache_xmalloc ();
+ /* obstack_init also initializes the obstack so it is
+ empty. We could use obstack_specify_allocation but
+ gdb_obstack.h specifies the alloc/dealloc
+ functions. */
+ obstack_init (&objfile->objfile_obstack);
+ if (build_objfile_section_table (objfile))
+ {
+ error (_("Can't find the file sections in `%s': %s"),
+ objfile->name, bfd_errmsg (bfd_get_error ()));
+ }
+ terminate_minimal_symbol_table (objfile);
+
+ /* We use the same section offsets as from last time. I'm not
+ sure whether that is always correct for shared libraries. */
+ objfile->section_offsets = (struct section_offsets *)
+ obstack_alloc (&objfile->objfile_obstack,
+ SIZEOF_N_SECTION_OFFSETS (num_offsets));
+ memcpy (objfile->section_offsets, offsets,
+ SIZEOF_N_SECTION_OFFSETS (num_offsets));
+ objfile->num_sections = num_offsets;
+
+ /* What the hell is sym_new_init for, anyway? The concept of
+ distinguishing between the main file and additional files
+ in this way seems rather dubious. */
+ if (objfile == symfile_objfile)
+ {
+ (*objfile->sf->sym_new_init) (objfile);
+ }
+
+ (*objfile->sf->sym_init) (objfile);
+ clear_complaints (&symfile_complaints, 1, 1);
+ /* The "mainline" parameter is a hideous hack; I think leaving it
+ zero is OK since dbxread.c also does what it needs to do if
+ objfile->global_psymbols.size is 0. */
+ (*objfile->sf->sym_read) (objfile, 0);
+ if (!have_partial_symbols () && !have_full_symbols ())
+ {
+ wrap_here ("");
+ printf_unfiltered (_("(no debugging symbols found)\n"));
+ wrap_here ("");
+ }
+ objfile->flags |= OBJF_SYMS;
+
+ /* We're done reading the symbol file; finish off complaints. */
+ clear_complaints (&symfile_complaints, 0, 1);
- /* Getting new symbols may change our opinion about what is
- frameless. */
+ /* Getting new symbols may change our opinion about what is
+ frameless. */
- reinit_frame_cache ();
+ reinit_frame_cache ();
- /* Discard cleanups as symbol reading was successful. */
- discard_cleanups (old_cleanups);
+ /* Discard cleanups as symbol reading was successful. */
+ discard_cleanups (old_cleanups);
- /* If the mtime has changed between the time we set new_modtime
- and now, we *want* this to be out of date, so don't call stat
- again now. */
- objfile->mtime = new_modtime;
- reread_one = 1;
+ /* If the mtime has changed between the time we set new_modtime
+ and now, we *want* this to be out of date, so don't call stat
+ again now. */
+ objfile->mtime = new_modtime;
+ reread_one = 1;
+ reread_separate_symbols (objfile);
+ }
}
}
- }
if (reread_one)
- clear_symtab_users ();
+ {
+ clear_symtab_users ();
+ /* At least one objfile has changed, so we can consider that
+ the executable we're debugging has changed too. */
+ observer_notify_executable_changed (NULL);
+ }
+
}
-\f
-enum language
-deduce_language_from_filename (filename)
- char *filename;
-{
- char *c;
-
- if (0 == filename)
- ; /* Get default */
- else if (0 == (c = strrchr (filename, '.')))
- ; /* Get default. */
- else if (STREQ (c, ".c"))
- return language_c;
- else if (STREQ (c, ".cc") || STREQ (c, ".C") || STREQ (c, ".cxx")
- || STREQ (c, ".cpp") || STREQ (c, ".cp"))
- return language_cplus;
- else if (STREQ (c, ".ch") || STREQ (c, ".c186") || STREQ (c, ".c286"))
- return language_chill;
- else if (STREQ (c, ".f") || STREQ (c, ".F"))
- return language_fortran;
- else if (STREQ (c, ".mod"))
- return language_m2;
- else if (STREQ (c, ".s") || STREQ (c, ".S"))
- return language_asm;
-
- return language_unknown; /* default */
-}
-\f
-/* allocate_symtab:
- Allocate and partly initialize a new symbol table. Return a pointer
- to it. error() if no space.
+/* Handle separate debug info for OBJFILE, which has just been
+ re-read:
+ - If we had separate debug info before, but now we don't, get rid
+ of the separated objfile.
+ - If we didn't have separated debug info before, but now we do,
+ read in the new separated debug info file.
+ - If the debug link points to a different file, toss the old one
+ and read the new one.
+ This function does *not* handle the case where objfile is still
+ using the same separate debug info file, but that file's timestamp
+ has changed. That case should be handled by the loop in
+ reread_symbols already. */
+static void
+reread_separate_symbols (struct objfile *objfile)
+{
+ char *debug_file;
+ unsigned long crc32;
+
+ /* Does the updated objfile's debug info live in a
+ separate file? */
+ debug_file = find_separate_debug_file (objfile);
+
+ if (objfile->separate_debug_objfile)
+ {
+ /* There are two cases where we need to get rid of
+ the old separated debug info objfile:
+ - if the new primary objfile doesn't have
+ separated debug info, or
+ - if the new primary objfile has separate debug
+ info, but it's under a different filename.
+
+ If the old and new objfiles both have separate
+ debug info, under the same filename, then we're
+ okay --- if the separated file's contents have
+ changed, we will have caught that when we
+ visited it in this function's outermost
+ loop. */
+ if (! debug_file
+ || strcmp (debug_file, objfile->separate_debug_objfile->name) != 0)
+ free_objfile (objfile->separate_debug_objfile);
+ }
+
+ /* If the new objfile has separate debug info, and we
+ haven't loaded it already, do so now. */
+ if (debug_file
+ && ! objfile->separate_debug_objfile)
+ {
+ /* Use the same section offset table as objfile itself.
+ Preserve the flags from objfile that make sense. */
+ objfile->separate_debug_objfile
+ = (symbol_file_add_with_addrs_or_offsets
+ (symfile_bfd_open (debug_file),
+ info_verbose, /* from_tty: Don't override the default. */
+ 0, /* No addr table. */
+ objfile->section_offsets, objfile->num_sections,
+ 0, /* Not mainline. See comments about this above. */
+ objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW
+ | OBJF_USERLOADED)));
+ objfile->separate_debug_objfile->separate_debug_objfile_backlink
+ = objfile;
+ }
+}
+
+
+\f
+
+
+typedef struct
+{
+ char *ext;
+ enum language lang;
+}
+filename_language;
+
+static filename_language *filename_language_table;
+static int fl_table_size, fl_table_next;
+
+static void
+add_filename_language (char *ext, enum language lang)
+{
+ if (fl_table_next >= fl_table_size)
+ {
+ fl_table_size += 10;
+ filename_language_table =
+ xrealloc (filename_language_table,
+ fl_table_size * sizeof (*filename_language_table));
+ }
+
+ filename_language_table[fl_table_next].ext = xstrdup (ext);
+ filename_language_table[fl_table_next].lang = lang;
+ fl_table_next++;
+}
+
+static char *ext_args;
+static void
+show_ext_args (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+Mapping between filename extension and source language is \"%s\".\n"),
+ value);
+}
+
+static void
+set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e)
+{
+ int i;
+ char *cp = ext_args;
+ enum language lang;
+
+ /* First arg is filename extension, starting with '.' */
+ if (*cp != '.')
+ error (_("'%s': Filename extension must begin with '.'"), ext_args);
+
+ /* Find end of first arg. */
+ while (*cp && !isspace (*cp))
+ cp++;
+
+ if (*cp == '\0')
+ error (_("'%s': two arguments required -- filename extension and language"),
+ ext_args);
+
+ /* Null-terminate first arg */
+ *cp++ = '\0';
+
+ /* Find beginning of second arg, which should be a source language. */
+ while (*cp && isspace (*cp))
+ cp++;
+
+ if (*cp == '\0')
+ error (_("'%s': two arguments required -- filename extension and language"),
+ ext_args);
+
+ /* Lookup the language from among those we know. */
+ lang = language_enum (cp);
+
+ /* Now lookup the filename extension: do we already know it? */
+ for (i = 0; i < fl_table_next; i++)
+ if (0 == strcmp (ext_args, filename_language_table[i].ext))
+ break;
+
+ if (i >= fl_table_next)
+ {
+ /* new file extension */
+ add_filename_language (ext_args, lang);
+ }
+ else
+ {
+ /* redefining a previously known filename extension */
+
+ /* if (from_tty) */
+ /* query ("Really make files of type %s '%s'?", */
+ /* ext_args, language_str (lang)); */
+
+ xfree (filename_language_table[i].ext);
+ filename_language_table[i].ext = xstrdup (ext_args);
+ filename_language_table[i].lang = lang;
+ }
+}
+
+static void
+info_ext_lang_command (char *args, int from_tty)
+{
+ int i;
+
+ printf_filtered (_("Filename extensions and the languages they represent:"));
+ printf_filtered ("\n\n");
+ for (i = 0; i < fl_table_next; i++)
+ printf_filtered ("\t%s\t- %s\n",
+ filename_language_table[i].ext,
+ language_str (filename_language_table[i].lang));
+}
+
+static void
+init_filename_language_table (void)
+{
+ if (fl_table_size == 0) /* protect against repetition */
+ {
+ fl_table_size = 20;
+ fl_table_next = 0;
+ filename_language_table =
+ xmalloc (fl_table_size * sizeof (*filename_language_table));
+ add_filename_language (".c", language_c);
+ add_filename_language (".C", language_cplus);
+ add_filename_language (".cc", language_cplus);
+ add_filename_language (".cp", language_cplus);
+ add_filename_language (".cpp", language_cplus);
+ add_filename_language (".cxx", language_cplus);
+ add_filename_language (".c++", language_cplus);
+ add_filename_language (".java", language_java);
+ add_filename_language (".class", language_java);
+ add_filename_language (".m", language_objc);
+ add_filename_language (".f", language_fortran);
+ add_filename_language (".F", language_fortran);
+ add_filename_language (".s", language_asm);
+ add_filename_language (".S", language_asm);
+ add_filename_language (".pas", language_pascal);
+ add_filename_language (".p", language_pascal);
+ add_filename_language (".pp", language_pascal);
+ add_filename_language (".adb", language_ada);
+ add_filename_language (".ads", language_ada);
+ add_filename_language (".a", language_ada);
+ add_filename_language (".ada", language_ada);
+ }
+}
+
+enum language
+deduce_language_from_filename (char *filename)
+{
+ int i;
+ char *cp;
+
+ if (filename != NULL)
+ if ((cp = strrchr (filename, '.')) != NULL)
+ for (i = 0; i < fl_table_next; i++)
+ if (strcmp (cp, filename_language_table[i].ext) == 0)
+ return filename_language_table[i].lang;
+
+ return language_unknown;
+}
+\f
+/* allocate_symtab:
+
+ Allocate and partly initialize a new symbol table. Return a pointer
+ to it. error() if no space.
Caller must set these fields:
- LINETABLE(symtab)
- symtab->blockvector
- symtab->dirname
- symtab->free_code
- symtab->free_ptr
- initialize any EXTRA_SYMTAB_INFO
- possibly free_named_symtabs (symtab->filename);
+ LINETABLE(symtab)
+ symtab->blockvector
+ symtab->dirname
+ symtab->free_code
+ symtab->free_ptr
+ possibly free_named_symtabs (symtab->filename);
*/
struct symtab *
-allocate_symtab (filename, objfile)
- char *filename;
- struct objfile *objfile;
+allocate_symtab (char *filename, struct objfile *objfile)
{
- register struct symtab *symtab;
+ struct symtab *symtab;
symtab = (struct symtab *)
- obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symtab));
+ obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab));
memset (symtab, 0, sizeof (*symtab));
- symtab -> filename = obsavestring (filename, strlen (filename),
- &objfile -> symbol_obstack);
- symtab -> fullname = NULL;
- symtab -> language = deduce_language_from_filename (filename);
+ symtab->filename = obsavestring (filename, strlen (filename),
+ &objfile->objfile_obstack);
+ symtab->fullname = NULL;
+ symtab->language = deduce_language_from_filename (filename);
+ symtab->debugformat = obsavestring ("unknown", 7,
+ &objfile->objfile_obstack);
/* Hook it to the objfile it comes from */
- symtab -> objfile = objfile;
- symtab -> next = objfile -> symtabs;
- objfile -> symtabs = symtab;
+ symtab->objfile = objfile;
+ symtab->next = objfile->symtabs;
+ objfile->symtabs = symtab;
+ /* FIXME: This should go away. It is only defined for the Z8000,
+ and the Z8000 definition of this macro doesn't have anything to
+ do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just
+ here for convenience. */
#ifdef INIT_EXTRA_SYMTAB_INFO
INIT_EXTRA_SYMTAB_INFO (symtab);
#endif
}
struct partial_symtab *
-allocate_psymtab (filename, objfile)
- char *filename;
- struct objfile *objfile;
+allocate_psymtab (char *filename, struct objfile *objfile)
{
struct partial_symtab *psymtab;
- if (objfile -> free_psymtabs)
+ if (objfile->free_psymtabs)
{
- psymtab = objfile -> free_psymtabs;
- objfile -> free_psymtabs = psymtab -> next;
+ psymtab = objfile->free_psymtabs;
+ objfile->free_psymtabs = psymtab->next;
}
else
psymtab = (struct partial_symtab *)
- obstack_alloc (&objfile -> psymbol_obstack,
+ obstack_alloc (&objfile->objfile_obstack,
sizeof (struct partial_symtab));
memset (psymtab, 0, sizeof (struct partial_symtab));
- psymtab -> filename = obsavestring (filename, strlen (filename),
- &objfile -> psymbol_obstack);
- psymtab -> symtab = NULL;
+ psymtab->filename = obsavestring (filename, strlen (filename),
+ &objfile->objfile_obstack);
+ psymtab->symtab = NULL;
- /* Hook it to the objfile it comes from */
+ /* Prepend it to the psymtab list for the objfile it belongs to.
+ Psymtabs are searched in most recent inserted -> least recent
+ inserted order. */
+
+ psymtab->objfile = objfile;
+ psymtab->next = objfile->psymtabs;
+ objfile->psymtabs = psymtab;
+#if 0
+ {
+ struct partial_symtab **prev_pst;
+ psymtab->objfile = objfile;
+ psymtab->next = NULL;
+ prev_pst = &(objfile->psymtabs);
+ while ((*prev_pst) != NULL)
+ prev_pst = &((*prev_pst)->next);
+ (*prev_pst) = psymtab;
+ }
+#endif
- psymtab -> objfile = objfile;
- psymtab -> next = objfile -> psymtabs;
- objfile -> psymtabs = psymtab;
-
return (psymtab);
}
+void
+discard_psymtab (struct partial_symtab *pst)
+{
+ struct partial_symtab **prev_pst;
+
+ /* From dbxread.c:
+ Empty psymtabs happen as a result of header files which don't
+ have any symbols in them. There can be a lot of them. But this
+ check is wrong, in that a psymtab with N_SLINE entries but
+ nothing else is not empty, but we don't realize that. Fixing
+ that without slowing things down might be tricky. */
+
+ /* First, snip it out of the psymtab chain */
+
+ prev_pst = &(pst->objfile->psymtabs);
+ while ((*prev_pst) != pst)
+ prev_pst = &((*prev_pst)->next);
+ (*prev_pst) = pst->next;
+
+ /* Next, put it on a free list for recycling */
+
+ pst->next = pst->objfile->free_psymtabs;
+ pst->objfile->free_psymtabs = pst;
+}
\f
+
/* Reset all data structures in gdb which may contain references to symbol
- table date. */
+ table data. */
void
-clear_symtab_users ()
+clear_symtab_users (void)
{
/* Someday, we should do better than this, by only blowing away
the things that really need to be blown. */
+
+ /* Clear the "current" symtab first, because it is no longer valid.
+ breakpoint_re_set may try to access the current symtab. */
+ clear_current_source_symtab_and_line ();
+
clear_value_history ();
clear_displays ();
clear_internalvars ();
breakpoint_re_set ();
set_default_breakpoint (0, 0, 0, 0);
- current_source_symtab = 0;
- current_source_line = 0;
clear_pc_function_cache ();
+ if (deprecated_target_new_objfile_hook)
+ deprecated_target_new_objfile_hook (NULL);
+}
+
+static void
+clear_symtab_users_cleanup (void *ignore)
+{
+ clear_symtab_users ();
}
/* clear_symtab_users_once:
This function is run after symbol reading, or from a cleanup.
If an old symbol table was obsoleted, the old symbol table
- has been blown away, but the other GDB data structures that may
+ has been blown away, but the other GDB data structures that may
reference it have not yet been cleared or re-directed. (The old
symtab was zapped, and the cleanup queued, in free_named_symtab()
below.)
#if 0
/* FIXME: As free_named_symtabs is currently a big noop this function
is no longer needed. */
-static void
-clear_symtab_users_once PARAMS ((void));
+static void clear_symtab_users_once (void);
static int clear_symtab_users_queued;
static int clear_symtab_users_done;
static void
-clear_symtab_users_once ()
+clear_symtab_users_once (void)
{
/* Enforce once-per-`do_cleanups'-semantics */
if (clear_symtab_users_queued <= clear_symtab_users_done)
/* Delete the specified psymtab, and any others that reference it. */
static void
-cashier_psymtab (pst)
- struct partial_symtab *pst;
+cashier_psymtab (struct partial_symtab *pst)
{
struct partial_symtab *ps, *pprev = NULL;
int i;
/* Find its previous psymtab in the chain */
- for (ps = pst->objfile->psymtabs; ps; ps = ps->next) {
- if (ps == pst)
- break;
- pprev = ps;
- }
+ for (ps = pst->objfile->psymtabs; ps; ps = ps->next)
+ {
+ if (ps == pst)
+ break;
+ pprev = ps;
+ }
- if (ps) {
- /* Unhook it from the chain. */
- if (ps == pst->objfile->psymtabs)
- pst->objfile->psymtabs = ps->next;
- else
- pprev->next = ps->next;
-
- /* FIXME, we can't conveniently deallocate the entries in the
- partial_symbol lists (global_psymbols/static_psymbols) that
- this psymtab points to. These just take up space until all
- the psymtabs are reclaimed. Ditto the dependencies list and
- filename, which are all in the psymbol_obstack. */
-
- /* We need to cashier any psymtab that has this one as a dependency... */
-again:
- for (ps = pst->objfile->psymtabs; ps; ps = ps->next) {
- for (i = 0; i < ps->number_of_dependencies; i++) {
- if (ps->dependencies[i] == pst) {
- cashier_psymtab (ps);
- goto again; /* Must restart, chain has been munged. */
+ if (ps)
+ {
+ /* Unhook it from the chain. */
+ if (ps == pst->objfile->psymtabs)
+ pst->objfile->psymtabs = ps->next;
+ else
+ pprev->next = ps->next;
+
+ /* FIXME, we can't conveniently deallocate the entries in the
+ partial_symbol lists (global_psymbols/static_psymbols) that
+ this psymtab points to. These just take up space until all
+ the psymtabs are reclaimed. Ditto the dependencies list and
+ filename, which are all in the objfile_obstack. */
+
+ /* We need to cashier any psymtab that has this one as a dependency... */
+ again:
+ for (ps = pst->objfile->psymtabs; ps; ps = ps->next)
+ {
+ for (i = 0; i < ps->number_of_dependencies; i++)
+ {
+ if (ps->dependencies[i] == pst)
+ {
+ cashier_psymtab (ps);
+ goto again; /* Must restart, chain has been munged. */
+ }
+ }
}
- }
}
- }
}
/* If a symtab or psymtab for filename NAME is found, free it along
it is not called for subsidiary files such as .h files.
Return value is 1 if we blew away the environment, 0 if not.
- FIXME. The return valu appears to never be used.
+ FIXME. The return value appears to never be used.
FIXME. I think this is not the best way to do this. We should
work on being gentler to the environment while still cleaning up
all stray pointers into the freed symtab. */
int
-free_named_symtabs (name)
- char *name;
+free_named_symtabs (char *name)
{
#if 0
/* FIXME: With the new method of each objfile having it's own
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 symtab *s;
+ struct symtab *prev;
+ struct partial_symtab *ps;
struct blockvector *bv;
int blewit = 0;
/* Look for a psymtab with the specified name. */
again2:
- for (ps = partial_symtab_list; ps; ps = ps->next) {
- 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 (ps = partial_symtab_list; ps; ps = ps->next)
+ {
+ if (strcmp (name, ps->filename) == 0)
+ {
+ cashier_psymtab (ps); /* Blow it away...and its little dog, too. */
+ goto again2; /* Must restart, chain has been munged */
+ }
}
- }
/* Look for a symtab with the specified name. */
for (s = symtab_list; s; s = s->next)
{
- if (STREQ (name, s->filename))
+ if (strcmp (name, s->filename) == 0)
break;
prev = s;
}
prev->next = s->next;
/* For now, queue a delete for all breakpoints, displays, etc., whether
- or not they depend on the symtab being freed. This should be
- changed so that only those data structures affected are deleted. */
+ or not they depend on the symtab being freed. This should be
+ changed so that only those data structures affected are deleted. */
/* But don't delete anything if the symtab is empty.
- This test is necessary due to a bug in "dbxread.c" that
- causes empty symtabs to be created for N_SO symbols that
- contain the pathname of the object file. (This problem
- has been fixed in GDB 3.9x). */
+ This test is necessary due to a bug in "dbxread.c" that
+ causes empty symtabs to be created for N_SO symbols that
+ contain the pathname of the object file. (This problem
+ has been fixed in GDB 3.9x). */
bv = BLOCKVECTOR (s);
if (BLOCKVECTOR_NBLOCKS (bv) > 2
|| BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK))
|| BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)))
{
- complain (&oldsyms_complaint, name);
-
+ complaint (&symfile_complaints, _("Replacing old symbols for `%s'"),
+ name);
clear_symtab_users_queued++;
make_cleanup (clear_symtab_users_once, 0);
blewit = 1;
- } else {
- complain (&empty_symtab_complaint, name);
}
+ else
+ complaint (&symfile_complaints, _("Empty symbol table found for `%s'"),
+ name);
free_symtab (s);
}
else
{
/* It is still possible that some breakpoints will be affected
- even though no symtab was found, since the file might have
- been compiled without debugging, and hence not be associated
- with a symtab. In order to handle this correctly, we would need
- to keep a list of text address ranges for undebuggable files.
- For now, we do nothing, since this is a fairly obscure case. */
+ even though no symtab was found, since the file might have
+ been compiled without debugging, and hence not be associated
+ with a symtab. In order to handle this correctly, we would need
+ to keep a list of text address ranges for undebuggable files.
+ For now, we do nothing, since this is a fairly obscure case. */
;
}
/* Allocate and partially fill a partial symtab. It will be
completely filled at the end of the symbol list.
- SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR
- is the address relative to which its symbols are (incremental) or 0
- (normal). */
-
+ FILENAME is the name of the symbol-file we are reading from. */
struct partial_symtab *
-start_psymtab_common (objfile, section_offsets,
- filename, textlow, global_syms, static_syms)
- struct objfile *objfile;
- struct section_offsets *section_offsets;
- char *filename;
- CORE_ADDR textlow;
- struct partial_symbol *global_syms;
- struct partial_symbol *static_syms;
+start_psymtab_common (struct objfile *objfile,
+ struct section_offsets *section_offsets, char *filename,
+ CORE_ADDR textlow, struct partial_symbol **global_syms,
+ struct partial_symbol **static_syms)
{
struct partial_symtab *psymtab;
psymtab = allocate_psymtab (filename, objfile);
- 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;
+ 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). */
+/* 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).
+ Return the partial symbol that has been added. */
+
+/* NOTE: carlton/2003-09-11: The reason why we return the partial
+ symbol is so that callers can get access to the symbol's demangled
+ name, which they don't have any cheap way to determine otherwise.
+ (Currenly, dwarf2read.c is the only file who uses that information,
+ though it's possible that other readers might in the future.)
+ Elena wasn't thrilled about that, and I don't blame her, but we
+ couldn't come up with a better way to get that information. If
+ it's needed in other situations, we could consider breaking up
+ SYMBOL_SET_NAMES to provide access to the demangled name lookup
+ cache. */
+
+const struct partial_symbol *
+add_psymbol_to_list (char *name, int namelength, domain_enum domain,
+ enum address_class class,
+ struct psymbol_allocation_list *list, long val, /* Value as a long */
+ CORE_ADDR coreaddr, /* Value as a CORE_ADDR */
+ enum language language, struct objfile *objfile)
+{
+ struct partial_symbol *psym;
+ char *buf = alloca (namelength + 1);
+ /* psymbol is static so that there will be no uninitialized gaps in the
+ structure which might contain random data, causing cache misses in
+ bcache. */
+ static struct partial_symbol psymbol;
+
+ /* Create local copy of the partial symbol */
+ memcpy (buf, name, namelength);
+ buf[namelength] = '\0';
+ /* val and coreaddr are mutually exclusive, one of them *will* be zero */
+ if (val != 0)
+ {
+ SYMBOL_VALUE (&psymbol) = val;
+ }
+ else
+ {
+ SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr;
+ }
+ SYMBOL_SECTION (&psymbol) = 0;
+ SYMBOL_LANGUAGE (&psymbol) = language;
+ PSYMBOL_DOMAIN (&psymbol) = domain;
+ PSYMBOL_CLASS (&psymbol) = class;
-#if !INLINE_ADD_PSYMBOL
+ SYMBOL_SET_NAMES (&psymbol, buf, namelength, objfile);
-/* 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). */
+ /* Stash the partial symbol away in the cache */
+ psym = deprecated_bcache (&psymbol, sizeof (struct partial_symbol),
+ objfile->psymbol_cache);
+
+ /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
+ if (list->next >= list->list + list->size)
+ {
+ extend_psymbol_list (list, objfile);
+ }
+ *list->next++ = psym;
+ OBJSTAT (objfile, n_psyms++);
+
+ return psym;
+}
+
+/* Add a symbol with a long value to a psymtab. This differs from
+ * add_psymbol_to_list above in taking both a mangled and a demangled
+ * name. */
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;
+add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name,
+ int dem_namelength, domain_enum domain,
+ enum address_class class,
+ struct psymbol_allocation_list *list, long val, /* Value as a long */
+ CORE_ADDR coreaddr, /* Value as a CORE_ADDR */
+ enum language language,
+ struct objfile *objfile)
+{
+ struct partial_symbol *psym;
+ char *buf = alloca (namelength + 1);
+ /* psymbol is static so that there will be no uninitialized gaps in the
+ structure which might contain random data, causing cache misses in
+ bcache. */
+ static struct partial_symbol psymbol;
+
+ /* Create local copy of the partial symbol */
+
+ memcpy (buf, name, namelength);
+ buf[namelength] = '\0';
+ DEPRECATED_SYMBOL_NAME (&psymbol) = deprecated_bcache (buf, namelength + 1,
+ objfile->psymbol_cache);
+ buf = alloca (dem_namelength + 1);
+ memcpy (buf, dem_name, dem_namelength);
+ buf[dem_namelength] = '\0';
+
+ switch (language)
+ {
+ case language_c:
+ case language_cplus:
+ SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) =
+ deprecated_bcache (buf, dem_namelength + 1, objfile->psymbol_cache);
+ break;
+ /* FIXME What should be done for the default case? Ignoring for now. */
+ }
+
+ /* val and coreaddr are mutually exclusive, one of them *will* be zero */
+ if (val != 0)
+ {
+ SYMBOL_VALUE (&psymbol) = val;
+ }
+ else
+ {
+ SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr;
+ }
+ SYMBOL_SECTION (&psymbol) = 0;
+ SYMBOL_LANGUAGE (&psymbol) = language;
+ PSYMBOL_DOMAIN (&psymbol) = domain;
+ PSYMBOL_CLASS (&psymbol) = class;
+ SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language);
+
+ /* Stash the partial symbol away in the cache */
+ psym = deprecated_bcache (&psymbol, sizeof (struct partial_symbol),
+ objfile->psymbol_cache);
+
+ /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
if (list->next >= list->list + list->size)
{
- extend_psymbol_list (list,objfile);
+ 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_LANGUAGE_SPECIFIC (psym, language);
+ *list->next++ = psym;
+ OBJSTAT (objfile, n_psyms++);
}
-/* Add a symbol with a CORE_ADDR value to a psymtab. */
+/* Initialize storage for partial symbols. */
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;
+init_psymbol_list (struct objfile *objfile, int total_symbols)
+{
+ /* Free any previously allocated psymbol lists. */
- if (list->next >= list->list + list->size)
+ if (objfile->global_psymbols.list)
{
- extend_psymbol_list (list,objfile);
+ xfree (objfile->global_psymbols.list);
+ }
+ if (objfile->static_psymbols.list)
+ {
+ xfree (objfile->static_psymbols.list);
+ }
+
+ /* Current best guess is that approximately a twentieth
+ of the total symbols (in a debugging file) are global or static
+ oriented symbols */
+
+ objfile->global_psymbols.size = total_symbols / 10;
+ objfile->static_psymbols.size = total_symbols / 10;
+
+ if (objfile->global_psymbols.size > 0)
+ {
+ objfile->global_psymbols.next =
+ objfile->global_psymbols.list = (struct partial_symbol **)
+ xmalloc ((objfile->global_psymbols.size
+ * sizeof (struct partial_symbol *)));
+ }
+ if (objfile->static_psymbols.size > 0)
+ {
+ objfile->static_psymbols.next =
+ objfile->static_psymbols.list = (struct partial_symbol **)
+ xmalloc ((objfile->static_psymbols.size
+ * sizeof (struct partial_symbol *)));
}
- 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_LANGUAGE_SPECIFIC (psym, language);
}
-#endif /* !INLINE_ADD_PSYMBOL */
+/* OVERLAYS:
+ The following code implements an abstraction for debugging overlay sections.
+
+ The target model is as follows:
+ 1) The gnu linker will permit multiple sections to be mapped into the
+ same VMA, each with its own unique LMA (or load address).
+ 2) It is assumed that some runtime mechanism exists for mapping the
+ sections, one by one, from the load address into the VMA address.
+ 3) This code provides a mechanism for gdb to keep track of which
+ sections should be considered to be mapped from the VMA to the LMA.
+ This information is used for symbol lookup, and memory read/write.
+ For instance, if a section has been mapped then its contents
+ should be read from the VMA, otherwise from the LMA.
+
+ Two levels of debugger support for overlays are available. One is
+ "manual", in which the debugger relies on the user to tell it which
+ overlays are currently mapped. This level of support is
+ implemented entirely in the core debugger, and the information about
+ whether a section is mapped is kept in the objfile->obj_section table.
+
+ The second level of support is "automatic", and is only available if
+ the target-specific code provides functionality to read the target's
+ overlay mapping table, and translate its contents for the debugger
+ (by updating the mapped state information in the obj_section tables).
+
+ The interface is as follows:
+ User commands:
+ overlay map <name> -- tell gdb to consider this section mapped
+ overlay unmap <name> -- tell gdb to consider this section unmapped
+ overlay list -- list the sections that GDB thinks are mapped
+ overlay read-target -- get the target's state of what's mapped
+ overlay off/manual/auto -- set overlay debugging state
+ Functional interface:
+ find_pc_mapped_section(pc): if the pc is in the range of a mapped
+ section, return that section.
+ find_pc_overlay(pc): find any overlay section that contains
+ the pc, either in its VMA or its LMA
+ overlay_is_mapped(sect): true if overlay is marked as mapped
+ section_is_overlay(sect): true if section's VMA != LMA
+ pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA
+ pc_in_unmapped_range(...): true if pc belongs to section's LMA
+ sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap
+ overlay_mapped_address(...): map an address from section's LMA to VMA
+ overlay_unmapped_address(...): map an address from section's VMA to LMA
+ symbol_overlayed_address(...): Return a "current" address for symbol:
+ either in VMA or LMA depending on whether
+ the symbol's section is currently mapped
+ */
+
+/* Overlay debugging state: */
+
+enum overlay_debugging_state overlay_debugging = ovly_off;
+int overlay_cache_invalid = 0; /* True if need to refresh mapped state */
+
+/* Target vector for refreshing overlay mapped state */
+static void simple_overlay_update (struct obj_section *);
+void (*target_overlay_update) (struct obj_section *) = simple_overlay_update;
+
+/* Function: section_is_overlay (SECTION)
+ Returns true if SECTION has VMA not equal to LMA, ie.
+ SECTION is loaded at an address different from where it will "run". */
+
+int
+section_is_overlay (asection *section)
+{
+ /* FIXME: need bfd *, so we can use bfd_section_lma methods. */
+
+ if (overlay_debugging)
+ if (section && section->lma != 0 &&
+ section->vma != section->lma)
+ return 1;
+
+ return 0;
+}
+
+/* Function: overlay_invalidate_all (void)
+ Invalidate the mapped state of all overlay sections (mark it as stale). */
+
+static void
+overlay_invalidate_all (void)
+{
+ struct objfile *objfile;
+ struct obj_section *sect;
+
+ ALL_OBJSECTIONS (objfile, sect)
+ if (section_is_overlay (sect->the_bfd_section))
+ sect->ovly_mapped = -1;
+}
+
+/* Function: overlay_is_mapped (SECTION)
+ Returns true if section is an overlay, and is currently mapped.
+ Private: public access is thru function section_is_mapped.
+
+ Access to the ovly_mapped flag is restricted to this function, so
+ that we can do automatic update. If the global flag
+ OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call
+ overlay_invalidate_all. If the mapped state of the particular
+ section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */
+
+static int
+overlay_is_mapped (struct obj_section *osect)
+{
+ if (osect == 0 || !section_is_overlay (osect->the_bfd_section))
+ return 0;
+
+ switch (overlay_debugging)
+ {
+ default:
+ case ovly_off:
+ return 0; /* overlay debugging off */
+ case ovly_auto: /* overlay debugging automatic */
+ /* Unles there is a target_overlay_update function,
+ there's really nothing useful to do here (can't really go auto) */
+ if (target_overlay_update)
+ {
+ if (overlay_cache_invalid)
+ {
+ overlay_invalidate_all ();
+ overlay_cache_invalid = 0;
+ }
+ if (osect->ovly_mapped == -1)
+ (*target_overlay_update) (osect);
+ }
+ /* fall thru to manual case */
+ case ovly_on: /* overlay debugging manual */
+ return osect->ovly_mapped == 1;
+ }
+}
+
+/* Function: section_is_mapped
+ Returns true if section is an overlay, and is currently mapped. */
+
+int
+section_is_mapped (asection *section)
+{
+ struct objfile *objfile;
+ struct obj_section *osect;
+
+ if (overlay_debugging)
+ if (section && section_is_overlay (section))
+ ALL_OBJSECTIONS (objfile, osect)
+ if (osect->the_bfd_section == section)
+ return overlay_is_mapped (osect);
+
+ return 0;
+}
+
+/* Function: pc_in_unmapped_range
+ If PC falls into the lma range of SECTION, return true, else false. */
+
+CORE_ADDR
+pc_in_unmapped_range (CORE_ADDR pc, asection *section)
+{
+ /* FIXME: need bfd *, so we can use bfd_section_lma methods. */
+
+ int size;
+
+ if (overlay_debugging)
+ if (section && section_is_overlay (section))
+ {
+ size = bfd_get_section_size (section);
+ if (section->lma <= pc && pc < section->lma + size)
+ return 1;
+ }
+ return 0;
+}
+
+/* Function: pc_in_mapped_range
+ If PC falls into the vma range of SECTION, return true, else false. */
+
+CORE_ADDR
+pc_in_mapped_range (CORE_ADDR pc, asection *section)
+{
+ /* FIXME: need bfd *, so we can use bfd_section_vma methods. */
+
+ int size;
+
+ if (overlay_debugging)
+ if (section && section_is_overlay (section))
+ {
+ size = bfd_get_section_size (section);
+ if (section->vma <= pc && pc < section->vma + size)
+ return 1;
+ }
+ return 0;
+}
+
+
+/* Return true if the mapped ranges of sections A and B overlap, false
+ otherwise. */
+static int
+sections_overlap (asection *a, asection *b)
+{
+ /* FIXME: need bfd *, so we can use bfd_section_vma methods. */
+
+ CORE_ADDR a_start = a->vma;
+ CORE_ADDR a_end = a->vma + bfd_get_section_size (a);
+ CORE_ADDR b_start = b->vma;
+ CORE_ADDR b_end = b->vma + bfd_get_section_size (b);
+
+ return (a_start < b_end && b_start < a_end);
+}
+
+/* Function: overlay_unmapped_address (PC, SECTION)
+ Returns the address corresponding to PC in the unmapped (load) range.
+ May be the same as PC. */
+
+CORE_ADDR
+overlay_unmapped_address (CORE_ADDR pc, asection *section)
+{
+ /* FIXME: need bfd *, so we can use bfd_section_lma methods. */
+
+ if (overlay_debugging)
+ if (section && section_is_overlay (section) &&
+ pc_in_mapped_range (pc, section))
+ return pc + section->lma - section->vma;
+
+ return pc;
+}
+
+/* Function: overlay_mapped_address (PC, SECTION)
+ Returns the address corresponding to PC in the mapped (runtime) range.
+ May be the same as PC. */
+
+CORE_ADDR
+overlay_mapped_address (CORE_ADDR pc, asection *section)
+{
+ /* FIXME: need bfd *, so we can use bfd_section_vma methods. */
+
+ if (overlay_debugging)
+ if (section && section_is_overlay (section) &&
+ pc_in_unmapped_range (pc, section))
+ return pc + section->vma - section->lma;
+
+ return pc;
+}
+
+
+/* Function: symbol_overlayed_address
+ Return one of two addresses (relative to the VMA or to the LMA),
+ depending on whether the section is mapped or not. */
+
+CORE_ADDR
+symbol_overlayed_address (CORE_ADDR address, asection *section)
+{
+ if (overlay_debugging)
+ {
+ /* If the symbol has no section, just return its regular address. */
+ if (section == 0)
+ return address;
+ /* If the symbol's section is not an overlay, just return its address */
+ if (!section_is_overlay (section))
+ return address;
+ /* If the symbol's section is mapped, just return its address */
+ if (section_is_mapped (section))
+ return address;
+ /*
+ * HOWEVER: if the symbol is in an overlay section which is NOT mapped,
+ * then return its LOADED address rather than its vma address!!
+ */
+ return overlay_unmapped_address (address, section);
+ }
+ return address;
+}
+
+/* Function: find_pc_overlay (PC)
+ Return the best-match overlay section for PC:
+ If PC matches a mapped overlay section's VMA, return that section.
+ Else if PC matches an unmapped section's VMA, return that section.
+ Else if PC matches an unmapped section's LMA, return that section. */
+
+asection *
+find_pc_overlay (CORE_ADDR pc)
+{
+ struct objfile *objfile;
+ struct obj_section *osect, *best_match = NULL;
+
+ if (overlay_debugging)
+ ALL_OBJSECTIONS (objfile, osect)
+ if (section_is_overlay (osect->the_bfd_section))
+ {
+ if (pc_in_mapped_range (pc, osect->the_bfd_section))
+ {
+ if (overlay_is_mapped (osect))
+ return osect->the_bfd_section;
+ else
+ best_match = osect;
+ }
+ else if (pc_in_unmapped_range (pc, osect->the_bfd_section))
+ best_match = osect;
+ }
+ return best_match ? best_match->the_bfd_section : NULL;
+}
+
+/* Function: find_pc_mapped_section (PC)
+ If PC falls into the VMA address range of an overlay section that is
+ currently marked as MAPPED, return that section. Else return NULL. */
+
+asection *
+find_pc_mapped_section (CORE_ADDR pc)
+{
+ struct objfile *objfile;
+ struct obj_section *osect;
+
+ if (overlay_debugging)
+ ALL_OBJSECTIONS (objfile, osect)
+ if (pc_in_mapped_range (pc, osect->the_bfd_section) &&
+ overlay_is_mapped (osect))
+ return osect->the_bfd_section;
+
+ return NULL;
+}
+
+/* Function: list_overlays_command
+ Print a list of mapped sections and their PC ranges */
+
+void
+list_overlays_command (char *args, int from_tty)
+{
+ int nmapped = 0;
+ struct objfile *objfile;
+ struct obj_section *osect;
+
+ if (overlay_debugging)
+ ALL_OBJSECTIONS (objfile, osect)
+ if (overlay_is_mapped (osect))
+ {
+ const char *name;
+ bfd_vma lma, vma;
+ int size;
+
+ vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section);
+ lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section);
+ size = bfd_get_section_size (osect->the_bfd_section);
+ name = bfd_section_name (objfile->obfd, osect->the_bfd_section);
+
+ printf_filtered ("Section %s, loaded at ", name);
+ deprecated_print_address_numeric (lma, 1, gdb_stdout);
+ puts_filtered (" - ");
+ deprecated_print_address_numeric (lma + size, 1, gdb_stdout);
+ printf_filtered (", mapped at ");
+ deprecated_print_address_numeric (vma, 1, gdb_stdout);
+ puts_filtered (" - ");
+ deprecated_print_address_numeric (vma + size, 1, gdb_stdout);
+ puts_filtered ("\n");
+
+ nmapped++;
+ }
+ if (nmapped == 0)
+ printf_filtered (_("No sections are mapped.\n"));
+}
+
+/* Function: map_overlay_command
+ Mark the named section as mapped (ie. residing at its VMA address). */
+
+void
+map_overlay_command (char *args, int from_tty)
+{
+ struct objfile *objfile, *objfile2;
+ struct obj_section *sec, *sec2;
+ asection *bfdsec;
+
+ if (!overlay_debugging)
+ error (_("\
+Overlay debugging not enabled. Use either the 'overlay auto' or\n\
+the 'overlay manual' command."));
+
+ if (args == 0 || *args == 0)
+ error (_("Argument required: name of an overlay section"));
+
+ /* First, find a section matching the user supplied argument */
+ ALL_OBJSECTIONS (objfile, sec)
+ if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args))
+ {
+ /* Now, check to see if the section is an overlay. */
+ bfdsec = sec->the_bfd_section;
+ if (!section_is_overlay (bfdsec))
+ continue; /* not an overlay section */
+
+ /* Mark the overlay as "mapped" */
+ sec->ovly_mapped = 1;
+
+ /* Next, make a pass and unmap any sections that are
+ overlapped by this new section: */
+ ALL_OBJSECTIONS (objfile2, sec2)
+ if (sec2->ovly_mapped
+ && sec != sec2
+ && sec->the_bfd_section != sec2->the_bfd_section
+ && sections_overlap (sec->the_bfd_section,
+ sec2->the_bfd_section))
+ {
+ if (info_verbose)
+ printf_unfiltered (_("Note: section %s unmapped by overlap\n"),
+ bfd_section_name (objfile->obfd,
+ sec2->the_bfd_section));
+ sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */
+ }
+ return;
+ }
+ error (_("No overlay section called %s"), args);
+}
+
+/* Function: unmap_overlay_command
+ Mark the overlay section as unmapped
+ (ie. resident in its LMA address range, rather than the VMA range). */
+
+void
+unmap_overlay_command (char *args, int from_tty)
+{
+ struct objfile *objfile;
+ struct obj_section *sec;
+
+ if (!overlay_debugging)
+ error (_("\
+Overlay debugging not enabled. Use either the 'overlay auto' or\n\
+the 'overlay manual' command."));
+
+ if (args == 0 || *args == 0)
+ error (_("Argument required: name of an overlay section"));
+
+ /* First, find a section matching the user supplied argument */
+ ALL_OBJSECTIONS (objfile, sec)
+ if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args))
+ {
+ if (!sec->ovly_mapped)
+ error (_("Section %s is not mapped"), args);
+ sec->ovly_mapped = 0;
+ return;
+ }
+ error (_("No overlay section called %s"), args);
+}
+
+/* Function: overlay_auto_command
+ A utility command to turn on overlay debugging.
+ Possibly this should be done via a set/show command. */
+
+static void
+overlay_auto_command (char *args, int from_tty)
+{
+ overlay_debugging = ovly_auto;
+ enable_overlay_breakpoints ();
+ if (info_verbose)
+ printf_unfiltered (_("Automatic overlay debugging enabled."));
+}
+
+/* Function: overlay_manual_command
+ A utility command to turn on overlay debugging.
+ Possibly this should be done via a set/show command. */
+
+static void
+overlay_manual_command (char *args, int from_tty)
+{
+ overlay_debugging = ovly_on;
+ disable_overlay_breakpoints ();
+ if (info_verbose)
+ printf_unfiltered (_("Overlay debugging enabled."));
+}
+
+/* Function: overlay_off_command
+ A utility command to turn on overlay debugging.
+ Possibly this should be done via a set/show command. */
+
+static void
+overlay_off_command (char *args, int from_tty)
+{
+ overlay_debugging = ovly_off;
+ disable_overlay_breakpoints ();
+ if (info_verbose)
+ printf_unfiltered (_("Overlay debugging disabled."));
+}
+
+static void
+overlay_load_command (char *args, int from_tty)
+{
+ if (target_overlay_update)
+ (*target_overlay_update) (NULL);
+ else
+ error (_("This target does not know how to read its overlay state."));
+}
+
+/* Function: overlay_command
+ A place-holder for a mis-typed command */
+
+/* Command list chain containing all defined "overlay" subcommands. */
+struct cmd_list_element *overlaylist;
+
+static void
+overlay_command (char *args, int from_tty)
+{
+ printf_unfiltered
+ ("\"overlay\" must be followed by the name of an overlay command.\n");
+ help_list (overlaylist, "overlay ", -1, gdb_stdout);
+}
+
+
+/* Target Overlays for the "Simplest" overlay manager:
+
+ This is GDB's default target overlay layer. It works with the
+ minimal overlay manager supplied as an example by Cygnus. The
+ entry point is via a function pointer "target_overlay_update",
+ so targets that use a different runtime overlay manager can
+ substitute their own overlay_update function and take over the
+ function pointer.
+
+ The overlay_update function pokes around in the target's data structures
+ to see what overlays are mapped, and updates GDB's overlay mapping with
+ this information.
+
+ In this simple implementation, the target data structures are as follows:
+ unsigned _novlys; /# number of overlay sections #/
+ unsigned _ovly_table[_novlys][4] = {
+ {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/
+ {..., ..., ..., ...},
+ }
+ unsigned _novly_regions; /# number of overlay regions #/
+ unsigned _ovly_region_table[_novly_regions][3] = {
+ {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/
+ {..., ..., ...},
+ }
+ These functions will attempt to update GDB's mappedness state in the
+ symbol section table, based on the target's mappedness state.
+
+ To do this, we keep a cached copy of the target's _ovly_table, and
+ attempt to detect when the cached copy is invalidated. The main
+ entry point is "simple_overlay_update(SECT), which looks up SECT in
+ the cached table and re-reads only the entry for that section from
+ the target (whenever possible).
+ */
+
+/* Cached, dynamically allocated copies of the target data structures: */
+static unsigned (*cache_ovly_table)[4] = 0;
+#if 0
+static unsigned (*cache_ovly_region_table)[3] = 0;
+#endif
+static unsigned cache_novlys = 0;
+#if 0
+static unsigned cache_novly_regions = 0;
+#endif
+static CORE_ADDR cache_ovly_table_base = 0;
+#if 0
+static CORE_ADDR cache_ovly_region_table_base = 0;
+#endif
+enum ovly_index
+ {
+ VMA, SIZE, LMA, MAPPED
+ };
+#define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT)
+
+/* Throw away the cached copy of _ovly_table */
+static void
+simple_free_overlay_table (void)
+{
+ if (cache_ovly_table)
+ xfree (cache_ovly_table);
+ cache_novlys = 0;
+ cache_ovly_table = NULL;
+ cache_ovly_table_base = 0;
+}
+
+#if 0
+/* Throw away the cached copy of _ovly_region_table */
+static void
+simple_free_overlay_region_table (void)
+{
+ if (cache_ovly_region_table)
+ xfree (cache_ovly_region_table);
+ cache_novly_regions = 0;
+ cache_ovly_region_table = NULL;
+ cache_ovly_region_table_base = 0;
+}
+#endif
+
+/* Read an array of ints from the target into a local buffer.
+ Convert to host order. int LEN is number of ints */
+static void
+read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len)
+{
+ /* FIXME (alloca): Not safe if array is very large. */
+ char *buf = alloca (len * TARGET_LONG_BYTES);
+ int i;
+
+ read_memory (memaddr, buf, len * TARGET_LONG_BYTES);
+ for (i = 0; i < len; i++)
+ myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf,
+ TARGET_LONG_BYTES);
+}
+
+/* Find and grab a copy of the target _ovly_table
+ (and _novlys, which is needed for the table's size) */
+static int
+simple_read_overlay_table (void)
+{
+ struct minimal_symbol *novlys_msym, *ovly_table_msym;
+
+ simple_free_overlay_table ();
+ novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL);
+ if (! novlys_msym)
+ {
+ error (_("Error reading inferior's overlay table: "
+ "couldn't find `_novlys' variable\n"
+ "in inferior. Use `overlay manual' mode."));
+ return 0;
+ }
+
+ ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL);
+ if (! ovly_table_msym)
+ {
+ error (_("Error reading inferior's overlay table: couldn't find "
+ "`_ovly_table' array\n"
+ "in inferior. Use `overlay manual' mode."));
+ return 0;
+ }
+
+ cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), 4);
+ cache_ovly_table
+ = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table));
+ cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym);
+ read_target_long_array (cache_ovly_table_base,
+ (int *) cache_ovly_table,
+ cache_novlys * 4);
+
+ return 1; /* SUCCESS */
+}
+
+#if 0
+/* Find and grab a copy of the target _ovly_region_table
+ (and _novly_regions, which is needed for the table's size) */
+static int
+simple_read_overlay_region_table (void)
+{
+ struct minimal_symbol *msym;
+
+ simple_free_overlay_region_table ();
+ msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL);
+ if (msym != NULL)
+ cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4);
+ else
+ return 0; /* failure */
+ cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12);
+ if (cache_ovly_region_table != NULL)
+ {
+ msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL);
+ if (msym != NULL)
+ {
+ cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym);
+ read_target_long_array (cache_ovly_region_table_base,
+ (int *) cache_ovly_region_table,
+ cache_novly_regions * 3);
+ }
+ else
+ return 0; /* failure */
+ }
+ else
+ return 0; /* failure */
+ return 1; /* SUCCESS */
+}
+#endif
+
+/* Function: simple_overlay_update_1
+ A helper function for simple_overlay_update. Assuming a cached copy
+ of _ovly_table exists, look through it to find an entry whose vma,
+ lma and size match those of OSECT. Re-read the entry and make sure
+ it still matches OSECT (else the table may no longer be valid).
+ Set OSECT's mapped state to match the entry. Return: 1 for
+ success, 0 for failure. */
+
+static int
+simple_overlay_update_1 (struct obj_section *osect)
+{
+ int i, size;
+ bfd *obfd = osect->objfile->obfd;
+ asection *bsect = osect->the_bfd_section;
+
+ size = bfd_get_section_size (osect->the_bfd_section);
+ for (i = 0; i < cache_novlys; i++)
+ if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect)
+ && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)
+ /* && cache_ovly_table[i][SIZE] == size */ )
+ {
+ read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES,
+ (int *) cache_ovly_table[i], 4);
+ if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect)
+ && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)
+ /* && cache_ovly_table[i][SIZE] == size */ )
+ {
+ osect->ovly_mapped = cache_ovly_table[i][MAPPED];
+ return 1;
+ }
+ else /* Warning! Warning! Target's ovly table has changed! */
+ return 0;
+ }
+ return 0;
+}
+
+/* Function: simple_overlay_update
+ If OSECT is NULL, then update all sections' mapped state
+ (after re-reading the entire target _ovly_table).
+ If OSECT is non-NULL, then try to find a matching entry in the
+ cached ovly_table and update only OSECT's mapped state.
+ If a cached entry can't be found or the cache isn't valid, then
+ re-read the entire cache, and go ahead and update all sections. */
+
+static void
+simple_overlay_update (struct obj_section *osect)
+{
+ struct objfile *objfile;
+
+ /* Were we given an osect to look up? NULL means do all of them. */
+ if (osect)
+ /* Have we got a cached copy of the target's overlay table? */
+ if (cache_ovly_table != NULL)
+ /* Does its cached location match what's currently in the symtab? */
+ if (cache_ovly_table_base ==
+ SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL)))
+ /* Then go ahead and try to look up this single section in the cache */
+ if (simple_overlay_update_1 (osect))
+ /* Found it! We're done. */
+ return;
+
+ /* Cached table no good: need to read the entire table anew.
+ Or else we want all the sections, in which case it's actually
+ more efficient to read the whole table in one block anyway. */
+
+ if (! simple_read_overlay_table ())
+ return;
+
+ /* Now may as well update all sections, even if only one was requested. */
+ ALL_OBJSECTIONS (objfile, osect)
+ if (section_is_overlay (osect->the_bfd_section))
+ {
+ int i, size;
+ bfd *obfd = osect->objfile->obfd;
+ asection *bsect = osect->the_bfd_section;
+
+ size = bfd_get_section_size (bsect);
+ for (i = 0; i < cache_novlys; i++)
+ if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect)
+ && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)
+ /* && cache_ovly_table[i][SIZE] == size */ )
+ { /* obj_section matches i'th entry in ovly_table */
+ osect->ovly_mapped = cache_ovly_table[i][MAPPED];
+ break; /* finished with inner for loop: break out */
+ }
+ }
+}
+
+/* Set the output sections and output offsets for section SECTP in
+ ABFD. The relocation code in BFD will read these offsets, so we
+ need to be sure they're initialized. We map each section to itself,
+ with no offset; this means that SECTP->vma will be honored. */
+
+static void
+symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy)
+{
+ sectp->output_section = sectp;
+ sectp->output_offset = 0;
+}
+
+/* Relocate the contents of a debug section SECTP in ABFD. The
+ contents are stored in BUF if it is non-NULL, or returned in a
+ malloc'd buffer otherwise.
+
+ For some platforms and debug info formats, shared libraries contain
+ relocations against the debug sections (particularly for DWARF-2;
+ one affected platform is PowerPC GNU/Linux, although it depends on
+ the version of the linker in use). Also, ELF object files naturally
+ have unresolved relocations for their debug sections. We need to apply
+ the relocations in order to get the locations of symbols correct. */
+
+bfd_byte *
+symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf)
+{
+ /* We're only interested in debugging sections with relocation
+ information. */
+ if ((sectp->flags & SEC_RELOC) == 0)
+ return NULL;
+ if ((sectp->flags & SEC_DEBUGGING) == 0)
+ return NULL;
+
+ /* We will handle section offsets properly elsewhere, so relocate as if
+ all sections begin at 0. */
+ bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL);
+
+ return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL);
+}
-\f
void
-_initialize_symfile ()
+_initialize_symfile (void)
{
struct cmd_list_element *c;
-
- c = add_cmd ("symbol-file", class_files, symbol_file_command,
- "Load symbol table from executable file FILE.\n\
+
+ c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\
+Load symbol table from executable file FILE.\n\
The `file' command can also load symbol tables, as well as setting the file\n\
-to execute.", &cmdlist);
- c->completer = filename_completer;
+to execute."), &cmdlist);
+ set_cmd_completer (c, filename_completer);
- c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command,
- "Usage: add-symbol-file FILE ADDR\n\
+ c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\
+Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\
Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\
-ADDR is the starting address of the file's text.",
+ADDR is the starting address of the file's text.\n\
+The optional arguments are section-name section-address pairs and\n\
+should be specified if the data and bss segments are not contiguous\n\
+with the text. SECT is a section name to be loaded at SECT_ADDR."),
&cmdlist);
- c->completer = filename_completer;
+ set_cmd_completer (c, filename_completer);
c = add_cmd ("add-shared-symbol-files", class_files,
- add_shared_symbol_files_command,
- "Load the symbols from shared objects in the dynamic linker's link map.",
- &cmdlist);
+ add_shared_symbol_files_command, _("\
+Load the symbols from shared objects in the dynamic linker's link map."),
+ &cmdlist);
c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1,
&cmdlist);
- c = add_cmd ("load", class_files, load_command,
- "Dynamically load FILE into the running program, and record its symbols\n\
-for access from GDB.", &cmdlist);
- c->completer = filename_completer;
-
- add_show_from_set
- (add_set_cmd ("symbol-reloading", class_support, var_boolean,
- (char *)&symbol_reloading,
- "Set dynamic symbol table reloading multiple times in one run.",
- &setlist),
- &showlist);
-
+ c = add_cmd ("load", class_files, load_command, _("\
+Dynamically load FILE into the running program, and record its symbols\n\
+for access from GDB."), &cmdlist);
+ set_cmd_completer (c, filename_completer);
+
+ add_setshow_boolean_cmd ("symbol-reloading", class_support,
+ &symbol_reloading, _("\
+Set dynamic symbol table reloading multiple times in one run."), _("\
+Show dynamic symbol table reloading multiple times in one run."), NULL,
+ NULL,
+ show_symbol_reloading,
+ &setlist, &showlist);
+
+ add_prefix_cmd ("overlay", class_support, overlay_command,
+ _("Commands for debugging overlays."), &overlaylist,
+ "overlay ", 0, &cmdlist);
+
+ add_com_alias ("ovly", "overlay", class_alias, 1);
+ add_com_alias ("ov", "overlay", class_alias, 1);
+
+ add_cmd ("map-overlay", class_support, map_overlay_command,
+ _("Assert that an overlay section is mapped."), &overlaylist);
+
+ add_cmd ("unmap-overlay", class_support, unmap_overlay_command,
+ _("Assert that an overlay section is unmapped."), &overlaylist);
+
+ add_cmd ("list-overlays", class_support, list_overlays_command,
+ _("List mappings of overlay sections."), &overlaylist);
+
+ add_cmd ("manual", class_support, overlay_manual_command,
+ _("Enable overlay debugging."), &overlaylist);
+ add_cmd ("off", class_support, overlay_off_command,
+ _("Disable overlay debugging."), &overlaylist);
+ add_cmd ("auto", class_support, overlay_auto_command,
+ _("Enable automatic overlay debugging."), &overlaylist);
+ add_cmd ("load-target", class_support, overlay_load_command,
+ _("Read the overlay mapping state from the target."), &overlaylist);
+
+ /* Filename extension to source language lookup table: */
+ init_filename_language_table ();
+ add_setshow_string_noescape_cmd ("extension-language", class_files,
+ &ext_args, _("\
+Set mapping between filename extension and source language."), _("\
+Show mapping between filename extension and source language."), _("\
+Usage: set extension-language .foo bar"),
+ set_ext_lang_command,
+ show_ext_args,
+ &setlist, &showlist);
+
+ add_info ("extensions", info_ext_lang_command,
+ _("All filename extensions associated with a source language."));
+
+ add_setshow_integer_cmd ("download-write-size", class_obscure,
+ &download_write_size, _("\
+Set the write size used when downloading a program."), _("\
+Show the write size used when downloading a program."), _("\
+Only used when downloading a program onto a remote\n\
+target. Specify zero, or a negative value, to disable\n\
+blocked writes. The actual size of each transfer is also\n\
+limited by the size of the target packet and the memory\n\
+cache."),
+ NULL,
+ show_download_write_size,
+ &setlist, &showlist);
+
+ debug_file_directory = xstrdup (DEBUGDIR);
+ add_setshow_optional_filename_cmd ("debug-file-directory", class_support,
+ &debug_file_directory, _("\
+Set the directory where separate debug symbols are searched for."), _("\
+Show the directory where separate debug symbols are searched for."), _("\
+Separate debug symbols are first searched for in the same\n\
+directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\
+and lastly at the path of the directory of the binary with\n\
+the global debug-file directory prepended."),
+ NULL,
+ show_debug_file_directory,
+ &setlist, &showlist);
}
projects / deliverable / binutils-gdb.git / blobdiff