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- /* Handle COFF SVR3 shared libraries for GDB, the GNU Debugger.
- Copyright 1993 Free Software Foundation, Inc.
-
- 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 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. */
-
-
- #include "defs.h"
-
- #include "frame.h"
- #include "bfd.h"
- #include "gdbcore.h"
- #include "symtab.h"
-
- /*
-
- GLOBAL FUNCTION
-
- coff_solib_add -- add a shared library files to the symtab list. We
- examine the `.lib' section of the exec file and determine the names of
- the shared libraries.
-
- This function is responsible for discovering those names and
- addresses, and saving sufficient information about them to allow
- their symbols to be read at a later time.
-
- SYNOPSIS
-
- void coff_solib_add (char *arg_string, int from_tty,
- struct target_ops *target)
-
- DESCRIPTION
-
- */
-
- void
- coff_solib_add (arg_string, from_tty, target)
- char *arg_string;
- int from_tty;
- struct target_ops *target;
- {
- asection *libsect;
-
- libsect = bfd_get_section_by_name (exec_bfd, ".lib");
-
- if (libsect)
- {
- int libsize;
- unsigned char *lib;
- struct libent
- {
- bfd_byte len[4];
- bfd_byte nameoffset[4];
- };
-
- libsize = bfd_section_size (exec_bfd, libsect);
-
- lib = (unsigned char *) alloca (libsize);
-
- bfd_get_section_contents (exec_bfd, libsect, lib, 0, libsize);
-
- while (libsize > 0)
- {
- struct libent *ent;
- struct objfile *objfile;
- int len, nameoffset;
- char *filename;
-
- ent = (struct libent *)lib;
-
- len = bfd_get_32 (exec_bfd, ent->len);
-
- nameoffset = bfd_get_32 (exec_bfd, ent->nameoffset);
-
- if (len <= 0)
- break;
-
- filename = (char *)ent + nameoffset * 4;
-
- objfile = symbol_file_add (filename, from_tty,
- 0, /* addr */
- 0, /* not mainline */
- 0, /* not mapped */
- 0); /* Not readnow */
- libsize -= len * 4;
- lib += len * 4;
- }
-
- /* Getting new symbols may change our opinion about what is
- frameless. */
- reinit_frame_cache ();
- }
- }
-
- /*
-
- GLOBAL FUNCTION
-
- coff_solib_create_inferior_hook -- shared library startup support
-
- SYNOPSIS
-
- void coff_solib_create_inferior_hook()
-
- DESCRIPTION
-
- When gdb starts up the inferior, the kernel maps in the shared
- libraries. We get here with the target stopped at it's first
- instruction, and the libraries already mapped. At this point, this
- function gets called via expansion of the macro
- SOLIB_CREATE_INFERIOR_HOOK.
- */
-
- void
- coff_solib_create_inferior_hook()
- {
- coff_solib_add ((char *) 0, 0, (struct target_ops *) 0);
- }
-