Create target sections for user-added symbol files.
Add the sections of the symbol files that are provided via 'add-symbol-file' to the set of current target sections. User-added sections are removed upon notification of free_objfile when their corresponding object file is deleted. 2013-10-29 Nicolas Blanc <nicolas.blanc@intel.com> * exec.h (add_target_sections_of_objfile): New declaration. * exec.c (add_target_sections_of_objfile): New function. * symfile.c (add_symbol_file_command): Update current target sections. (symfile_free_objfile): New function. (_initialize_symfile): Register observer for free_objfile events. Signed-off-by: Nicolas Blanc <nicolas.blanc@intel.com>
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3 changed files with 69 additions and 2 deletions
45
gdb/exec.c
45
gdb/exec.c
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@ -438,6 +438,51 @@ add_target_sections (void *owner,
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}
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}
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/* Add the sections of OBJFILE to the current set of target sections. */
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void
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add_target_sections_of_objfile (struct objfile *objfile)
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{
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struct target_section_table *table = current_target_sections;
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struct obj_section *osect;
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int space;
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unsigned count = 0;
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struct target_section *ts;
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if (objfile == NULL)
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return;
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/* Compute the number of sections to add. */
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ALL_OBJFILE_OSECTIONS (objfile, osect)
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{
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if (bfd_get_section_size (osect->the_bfd_section) == 0)
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continue;
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count++;
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}
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if (count == 0)
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return;
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space = resize_section_table (table, count);
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ts = table->sections + space;
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ALL_OBJFILE_OSECTIONS (objfile, osect)
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{
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if (bfd_get_section_size (osect->the_bfd_section) == 0)
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continue;
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gdb_assert (ts < table->sections + space + count);
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ts->addr = obj_section_addr (osect);
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ts->endaddr = obj_section_endaddr (osect);
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ts->the_bfd_section = osect->the_bfd_section;
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ts->owner = (void *) objfile;
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ts++;
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}
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}
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/* Remove all target sections owned by OWNER.
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OWNER must be the same value passed to add_target_sections. */
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@ -27,6 +27,7 @@
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struct target_section;
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struct target_ops;
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struct bfd;
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struct objfile;
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extern struct target_ops exec_ops;
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@ -93,6 +94,11 @@ extern void add_target_sections (void *owner,
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struct target_section *sections,
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struct target_section *sections_end);
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/* Add the sections of OBJFILE to the current set of target sections.
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* OBJFILE owns the new target sections. */
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extern void add_target_sections_of_objfile (struct objfile *objfile);
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/* Prints info about all sections defined in the TABLE. ABFD is
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special cased --- it's filename is omitted; if it is the executable
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file, its entry point is printed. */
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@ -57,6 +57,7 @@
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#include "stack.h"
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#include "gdb_bfd.h"
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#include "cli/cli-utils.h"
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#include "target.h"
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#include <sys/types.h>
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#include <fcntl.h>
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@ -2206,6 +2207,7 @@ add_symbol_file_command (char *args, int from_tty)
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int expecting_sec_name = 0;
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int expecting_sec_addr = 0;
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char **argv;
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struct objfile *objf;
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struct sect_opt
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{
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@ -2332,8 +2334,10 @@ add_symbol_file_command (char *args, int from_tty)
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if (from_tty && (!query ("%s", "")))
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error (_("Not confirmed."));
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symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0,
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section_addrs, flags);
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objf = symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0,
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section_addrs, flags);
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add_target_sections_of_objfile (objf);
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/* Getting new symbols may change our opinion about what is
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frameless. */
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@ -3819,11 +3823,23 @@ symfile_find_segment_sections (struct objfile *objfile)
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free_symfile_segment_data (data);
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}
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/* Listen for free_objfile events. */
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static void
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symfile_free_objfile (struct objfile *objfile)
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{
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/* Remove the target sections of user-added objfiles. */
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if (objfile != 0 && objfile->flags & OBJF_USERLOADED)
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remove_target_sections ((void *) objfile);
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}
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void
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_initialize_symfile (void)
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{
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struct cmd_list_element *c;
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observer_attach_free_objfile (symfile_free_objfile);
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c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\
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Load symbol table from executable file FILE.\n\
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The `file' command can also load symbol tables, as well as setting the file\n\
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