133 lines
3.1 KiB
C
133 lines
3.1 KiB
C
/* Handle COFF SVR3 shared libraries for GDB, the GNU Debugger.
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Copyright 1993 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "frame.h"
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#include "bfd.h"
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#include "gdbcore.h"
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#include "symtab.h"
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/*
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GLOBAL FUNCTION
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coff_solib_add -- add a shared library files to the symtab list. We
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examine the `.lib' section of the exec file and determine the names of
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the shared libraries.
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This function is responsible for discovering those names and
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addresses, and saving sufficient information about them to allow
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their symbols to be read at a later time.
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SYNOPSIS
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void coff_solib_add (char *arg_string, int from_tty,
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struct target_ops *target)
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DESCRIPTION
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*/
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void
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coff_solib_add (arg_string, from_tty, target)
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char *arg_string;
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int from_tty;
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struct target_ops *target;
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{
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asection *libsect;
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libsect = bfd_get_section_by_name (exec_bfd, ".lib");
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if (libsect)
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{
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int libsize;
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unsigned char *lib;
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struct libent
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{
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bfd_byte len[4];
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bfd_byte nameoffset[4];
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};
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libsize = bfd_section_size (exec_bfd, libsect);
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lib = (unsigned char *) alloca (libsize);
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bfd_get_section_contents (exec_bfd, libsect, lib, 0, libsize);
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while (libsize > 0)
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{
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struct libent *ent;
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struct objfile *objfile;
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int len, nameoffset;
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char *filename;
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ent = (struct libent *) lib;
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len = bfd_get_32 (exec_bfd, ent->len);
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nameoffset = bfd_get_32 (exec_bfd, ent->nameoffset);
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if (len <= 0)
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break;
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filename = (char *) ent + nameoffset * 4;
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objfile = symbol_file_add (filename, from_tty,
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NULL, /* no offsets */
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0, /* not mainline */
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OBJF_SHARED); /* flags */
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libsize -= len * 4;
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lib += len * 4;
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}
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/* Getting new symbols may change our opinion about what is
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frameless. */
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reinit_frame_cache ();
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}
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}
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/*
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GLOBAL FUNCTION
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coff_solib_create_inferior_hook -- shared library startup support
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SYNOPSIS
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void coff_solib_create_inferior_hook()
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DESCRIPTION
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When gdb starts up the inferior, the kernel maps in the shared
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libraries. We get here with the target stopped at it's first
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instruction, and the libraries already mapped. At this point, this
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function gets called via expansion of the macro
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SOLIB_CREATE_INFERIOR_HOOK.
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*/
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void
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coff_solib_create_inferior_hook ()
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{
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coff_solib_add ((char *) 0, 0, (struct target_ops *) 0);
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}
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