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3408 lines
85 KiB
C
3408 lines
85 KiB
C
/* Collect static initialization info into data structures
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that can be traversed by C++ initialization and finalization
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routines.
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Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
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Contributed by Chris Smith (csmith@convex.com).
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Heavily modified by Michael Meissner (meissner@cygnus.com),
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Per Bothner (bothner@cygnus.com), and John Gilmore (gnu@cygnus.com).
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This file is part of GNU CC.
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GNU CC 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, or (at your option)
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any later version.
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GNU CC 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Build tables of static constructors and destructors and run ld. */
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#include "config.h"
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#include <sys/types.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <errno.h>
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#include <signal.h>
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#include <sys/file.h>
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#include <sys/stat.h>
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#ifdef NO_WAIT_H
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#include <sys/wait.h>
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#endif
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#define COLLECT
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#include "demangle.h"
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#include "obstack.h"
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#ifndef errno
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extern int errno;
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#endif
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#ifndef HAVE_STRERROR
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#if defined(bsd4_4)
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extern const char *const sys_errlist[];
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#else
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extern char *sys_errlist[];
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#endif
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extern int sys_nerr;
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#else
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char *strerror();
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#endif
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/* Obstack allocation and deallocation routines. */
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#define obstack_chunk_alloc xmalloc
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#define obstack_chunk_free free
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#if !defined (__STDC__) && !defined (const)
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#define const
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#endif
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#ifdef USG
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#define vfork fork
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#endif
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/* Add prototype support. */
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#ifndef PROTO
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#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
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#define PROTO(ARGS) ARGS
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#else
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#define PROTO(ARGS) ()
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#endif
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#endif
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#ifndef R_OK
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#define R_OK 4
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#define W_OK 2
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#define X_OK 1
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#endif
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#ifndef WIFSIGNALED
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#define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
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#endif
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#ifndef WTERMSIG
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#define WTERMSIG(S) ((S) & 0x7f)
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#endif
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#ifndef WIFEXITED
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#define WIFEXITED(S) (((S) & 0xff) == 0)
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#endif
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#ifndef WEXITSTATUS
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#define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
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#endif
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/* On MSDOS, write temp files in current dir
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because there's no place else we can expect to use. */
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#ifdef __MSDOS__
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#ifndef P_tmpdir
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#define P_tmpdir "./"
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#endif
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#endif
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/* On certain systems, we have code that works by scanning the object file
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directly. But this code uses system-specific header files and library
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functions, so turn it off in a cross-compiler. Likewise, the names of
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the utilities aren't correct for a cross-compiler; we have to hope that
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cross-versions are in the proper directories. */
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#ifdef CROSS_COMPILE
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#undef SUNOS4_SHARED_LIBRARIES
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#undef OBJECT_FORMAT_COFF
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#undef OBJECT_FORMAT_ROSE
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#undef MD_EXEC_PREFIX
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#undef REAL_LD_FILE_NAME
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#undef REAL_NM_FILE_NAME
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#undef REAL_STRIP_FILE_NAME
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#endif
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/* If we can't use a special method, use the ordinary one:
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run nm to find what symbols are present.
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In a cross-compiler, this means you need a cross nm,
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but that isn't quite as unpleasant as special headers. */
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#if !defined (OBJECT_FORMAT_COFF) && !defined (OBJECT_FORMAT_ROSE)
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#define OBJECT_FORMAT_NONE
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#endif
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#ifdef OBJECT_FORMAT_COFF
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#include <a.out.h>
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#include <ar.h>
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#ifdef UMAX
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#include <sgs.h>
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#endif
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/* Many versions of ldfcn.h define these. */
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#ifdef FREAD
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#undef FREAD
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#undef FWRITE
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#endif
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#include <ldfcn.h>
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/* Some systems have an ISCOFF macro, but others do not. In some cases
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the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines
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that either do not have an ISCOFF macro in /usr/include or for those
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where it is wrong. */
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#ifndef MY_ISCOFF
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#define MY_ISCOFF(X) ISCOFF (X)
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#endif
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#ifdef XCOFF_DEBUGGING_INFO
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#define XCOFF_SCAN_LIBS
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#endif
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#endif /* OBJECT_FORMAT_COFF */
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#ifdef OBJECT_FORMAT_ROSE
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#ifdef _OSF_SOURCE
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#define USE_MMAP
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#endif
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#ifdef USE_MMAP
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#include <sys/mman.h>
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#endif
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#include <unistd.h>
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#include <mach_o_format.h>
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#include <mach_o_header.h>
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#include <mach_o_vals.h>
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#include <mach_o_types.h>
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#endif /* OBJECT_FORMAT_ROSE */
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#ifdef OBJECT_FORMAT_NONE
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/* Default flags to pass to nm. */
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#ifndef NM_FLAGS
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#define NM_FLAGS "-p"
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#endif
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#endif /* OBJECT_FORMAT_NONE */
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/* Some systems use __main in a way incompatible with its use in gcc, in these
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cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
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give the same symbol without quotes for an alternative entry point. You
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must define both, or neither. */
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#ifndef NAME__MAIN
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#define NAME__MAIN "__main"
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#define SYMBOL__MAIN __main
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#endif
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#if defined (LDD_SUFFIX) || SUNOS4_SHARED_LIBRARIES || defined(XCOFF_SCAN_LIBS)
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#define SCAN_LIBRARIES
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#endif
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#ifdef USE_COLLECT2
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int do_collecting = 1;
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#else
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int do_collecting = 0;
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#endif
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/* Linked lists of constructor and destructor names. */
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struct id
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{
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struct id *next;
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int sequence;
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char name[1];
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};
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struct head
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{
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struct id *first;
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struct id *last;
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int number;
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};
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/* Enumeration giving which pass this is for scanning the program file. */
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enum pass {
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PASS_FIRST, /* without constructors */
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PASS_OBJ, /* individual objects */
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PASS_LIB, /* looking for shared libraries */
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PASS_SECOND /* with constructors linked in */
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};
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#ifndef NO_SYS_SIGLIST
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#ifndef DONT_DECLARE_SYS_SIGLIST
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extern char *sys_siglist[];
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#endif
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#endif
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extern char *version_string;
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int vflag; /* true if -v */
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static int rflag; /* true if -r */
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static int strip_flag; /* true if -s */
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int debug; /* true if -debug */
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static int shared_obj; /* true if -shared */
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static int temp_filename_length; /* Length of temp_filename */
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static char *temp_filename; /* Base of temp filenames */
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static char *c_file; /* <xxx>.c for constructor/destructor list. */
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static char *o_file; /* <xxx>.o for constructor/destructor list. */
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static char *export_file; /* <xxx>.x for AIX export list. */
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char *ldout; /* File for ld errors. */
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static char *output_file; /* Output file for ld. */
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static char *nm_file_name; /* pathname of nm */
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static char *ldd_file_name; /* pathname of ldd (or equivalent) */
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static char *strip_file_name; /* pathname of strip */
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char *c_file_name; /* pathname of gcc */
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static char *initname, *fininame; /* names of init and fini funcs */
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static struct head constructors; /* list of constructors found */
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static struct head destructors; /* list of destructors found */
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static struct head exports; /* list of exported symbols */
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struct obstack temporary_obstack;
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struct obstack permanent_obstack;
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char * temporary_firstobj;
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/* Defined in the automatically-generated underscore.c. */
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||
extern int prepends_underscore;
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extern char *getenv ();
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extern char *mktemp ();
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||
extern FILE *fdopen ();
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/* Structure to hold all the directories in which to search for files to
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execute. */
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struct prefix_list
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{
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char *prefix; /* String to prepend to the path. */
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struct prefix_list *next; /* Next in linked list. */
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};
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struct path_prefix
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{
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struct prefix_list *plist; /* List of prefixes to try */
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int max_len; /* Max length of a prefix in PLIST */
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char *name; /* Name of this list (used in config stuff) */
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};
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void collect_exit PROTO((int));
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void collect_execute PROTO((char *, char **, char *));
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void dump_file PROTO((char *));
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static void handler PROTO((int));
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static int is_ctor_dtor PROTO((char *));
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static void choose_temp_base PROTO((void));
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static int is_in_prefix_list PROTO((struct path_prefix *, char *, int));
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static char *find_a_file PROTO((struct path_prefix *, char *));
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static void add_prefix PROTO((struct path_prefix *, char *));
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static void prefix_from_env PROTO((char *, struct path_prefix *));
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static void prefix_from_string PROTO((char *, struct path_prefix *));
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static void do_wait PROTO((char *));
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static void fork_execute PROTO((char *, char **));
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static void maybe_unlink PROTO((char *));
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static void add_to_list PROTO((struct head *, char *));
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static void write_list PROTO((FILE *, char *, struct id *));
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static void write_list_with_asm PROTO((FILE *, char *, struct id *));
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static void write_c_file PROTO((FILE *, char *));
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static void write_export_file PROTO((FILE *));
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static void scan_prog_file PROTO((char *, enum pass));
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static void scan_libraries PROTO((char *));
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char *xcalloc ();
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char *xmalloc ();
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extern char *index ();
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extern char *rindex ();
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extern void free ();
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#ifdef NO_DUP2
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int
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dup2 (oldfd, newfd)
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int oldfd;
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int newfd;
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{
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int fdtmp[256];
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int fdx = 0;
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int fd;
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if (oldfd == newfd)
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return oldfd;
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close (newfd);
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while ((fd = dup (oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
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fdtmp[fdx++] = fd;
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while (fdx > 0)
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close (fdtmp[--fdx]);
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return fd;
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}
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#endif
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char *
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my_strerror (e)
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int e;
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{
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#ifdef HAVE_STRERROR
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return strerror (e);
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#else
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static char buffer[30];
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if (!e)
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return "";
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if (e > 0 && e < sys_nerr)
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return sys_errlist[e];
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sprintf (buffer, "Unknown error %d", e);
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return buffer;
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#endif
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}
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/* Delete tempfiles and exit function. */
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void
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collect_exit (status)
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int status;
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{
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if (c_file != 0 && c_file[0])
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maybe_unlink (c_file);
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if (o_file != 0 && o_file[0])
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maybe_unlink (o_file);
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if (export_file != 0 && export_file[0])
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maybe_unlink (export_file);
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if (ldout != 0 && ldout[0])
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{
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dump_file (ldout);
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maybe_unlink (ldout);
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}
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if (status != 0 && output_file != 0 && output_file[0])
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maybe_unlink (output_file);
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exit (status);
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}
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||
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/* Die when sys call fails. */
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||
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void
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fatal_perror (string, arg1, arg2, arg3)
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char *string, *arg1, *arg2, *arg3;
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{
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int e = errno;
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fprintf (stderr, "collect2: ");
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fprintf (stderr, string, arg1, arg2, arg3);
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fprintf (stderr, ": %s\n", my_strerror (e));
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||
collect_exit (1);
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}
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||
|
||
/* Just die. */
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||
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||
void
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fatal (string, arg1, arg2, arg3)
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char *string, *arg1, *arg2, *arg3;
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{
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fprintf (stderr, "collect2: ");
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fprintf (stderr, string, arg1, arg2, arg3);
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fprintf (stderr, "\n");
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collect_exit (1);
|
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}
|
||
|
||
/* Write error message. */
|
||
|
||
void
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||
error (string, arg1, arg2, arg3, arg4)
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||
char *string, *arg1, *arg2, *arg3, *arg4;
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||
{
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||
fprintf (stderr, "collect2: ");
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fprintf (stderr, string, arg1, arg2, arg3, arg4);
|
||
fprintf (stderr, "\n");
|
||
}
|
||
|
||
/* In case obstack is linked in, and abort is defined to fancy_abort,
|
||
provide a default entry. */
|
||
|
||
void
|
||
fancy_abort ()
|
||
{
|
||
fatal ("internal error");
|
||
}
|
||
|
||
|
||
static void
|
||
handler (signo)
|
||
int signo;
|
||
{
|
||
if (c_file != 0 && c_file[0])
|
||
maybe_unlink (c_file);
|
||
|
||
if (o_file != 0 && o_file[0])
|
||
maybe_unlink (o_file);
|
||
|
||
if (ldout != 0 && ldout[0])
|
||
maybe_unlink (ldout);
|
||
|
||
signal (signo, SIG_DFL);
|
||
kill (getpid (), signo);
|
||
}
|
||
|
||
|
||
char *
|
||
xcalloc (size1, size2)
|
||
int size1, size2;
|
||
{
|
||
char *ptr = (char *) calloc (size1, size2);
|
||
if (ptr)
|
||
return ptr;
|
||
|
||
fatal ("out of memory");
|
||
return (char *)0;
|
||
}
|
||
|
||
char *
|
||
xmalloc (size)
|
||
unsigned size;
|
||
{
|
||
char *ptr = (char *) malloc (size);
|
||
if (ptr)
|
||
return ptr;
|
||
|
||
fatal ("out of memory");
|
||
return (char *)0;
|
||
}
|
||
|
||
char *
|
||
xrealloc (ptr, size)
|
||
char *ptr;
|
||
unsigned size;
|
||
{
|
||
register char *value = (char *) realloc (ptr, size);
|
||
if (value == 0)
|
||
fatal ("virtual memory exhausted");
|
||
return value;
|
||
}
|
||
|
||
int
|
||
file_exists (name)
|
||
char *name;
|
||
{
|
||
return access (name, R_OK) == 0;
|
||
}
|
||
|
||
/* Make a copy of a string INPUT with size SIZE. */
|
||
|
||
char *
|
||
savestring (input, size)
|
||
char *input;
|
||
int size;
|
||
{
|
||
char *output = (char *) xmalloc (size + 1);
|
||
bcopy (input, output, size);
|
||
output[size] = 0;
|
||
return output;
|
||
}
|
||
|
||
void
|
||
dump_file (name)
|
||
char *name;
|
||
{
|
||
FILE *stream = fopen (name, "r");
|
||
int no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
|
||
|
||
if (stream == 0)
|
||
return;
|
||
while (1)
|
||
{
|
||
int c;
|
||
while (c = getc (stream),
|
||
c != EOF && (isalnum (c) || c == '_' || c == '$' || c == '.'))
|
||
obstack_1grow (&temporary_obstack, c);
|
||
if (obstack_object_size (&temporary_obstack) > 0)
|
||
{
|
||
char *word, *p, *result;
|
||
obstack_1grow (&temporary_obstack, '\0');
|
||
word = obstack_finish (&temporary_obstack);
|
||
|
||
if (*word == '.')
|
||
++word, putc ('.', stderr);
|
||
p = word;
|
||
if (*p == '_' && prepends_underscore)
|
||
++p;
|
||
|
||
if (no_demangle)
|
||
result = 0;
|
||
else
|
||
result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI);
|
||
|
||
if (result)
|
||
{
|
||
int diff;
|
||
fputs (result, stderr);
|
||
|
||
diff = strlen (word) - strlen (result);
|
||
while (diff > 0)
|
||
--diff, putc (' ', stderr);
|
||
while (diff < 0 && c == ' ')
|
||
++diff, c = getc (stream);
|
||
|
||
free (result);
|
||
}
|
||
else
|
||
fputs (word, stderr);
|
||
|
||
fflush (stderr);
|
||
obstack_free (&temporary_obstack, temporary_firstobj);
|
||
}
|
||
if (c == EOF)
|
||
break;
|
||
putc (c, stderr);
|
||
}
|
||
}
|
||
|
||
/* Decide whether the given symbol is:
|
||
a constructor (1), a destructor (2), or neither (0). */
|
||
|
||
static int
|
||
is_ctor_dtor (s)
|
||
char *s;
|
||
{
|
||
struct names { char *name; int len; int ret; int two_underscores; };
|
||
|
||
register struct names *p;
|
||
register int ch;
|
||
register char *orig_s = s;
|
||
|
||
static struct names special[] = {
|
||
#ifdef NO_DOLLAR_IN_LABEL
|
||
#ifdef NO_DOT_IN_LABEL
|
||
{ "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 },
|
||
{ "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 },
|
||
#else
|
||
{ "GLOBAL_.I.", sizeof ("GLOBAL_.I.")-1, 1, 0 },
|
||
{ "GLOBAL_.D.", sizeof ("GLOBAL_.D.")-1, 2, 0 },
|
||
#endif
|
||
#else
|
||
{ "GLOBAL_$I$", sizeof ("GLOBAL_$I$")-1, 1, 0 },
|
||
{ "GLOBAL_$D$", sizeof ("GLOBAL_$D$")-1, 2, 0 },
|
||
#endif
|
||
{ "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 },
|
||
{ "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 },
|
||
#ifdef CFRONT_LOSSAGE /* Don't collect cfront initialization functions.
|
||
cfront has its own linker procedure to collect them;
|
||
if collect2 gets them too, they get collected twice
|
||
when the cfront procedure is run and the compiler used
|
||
for linking happens to be GCC. */
|
||
{ "sti__", sizeof ("sti__")-1, 1, 1 },
|
||
{ "std__", sizeof ("std__")-1, 2, 1 },
|
||
#endif /* CFRONT_LOSSAGE */
|
||
{ NULL, 0, 0, 0 }
|
||
};
|
||
|
||
while ((ch = *s) == '_')
|
||
++s;
|
||
|
||
if (s == orig_s)
|
||
return 0;
|
||
|
||
for (p = &special[0]; p->len > 0; p++)
|
||
{
|
||
if (ch == p->name[0]
|
||
&& (!p->two_underscores || ((s - orig_s) >= 2))
|
||
&& strncmp(s, p->name, p->len) == 0)
|
||
{
|
||
return p->ret;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Compute a string to use as the base of all temporary file names.
|
||
It is substituted for %g. */
|
||
|
||
static void
|
||
choose_temp_base ()
|
||
{
|
||
char *base = getenv ("TMPDIR");
|
||
int len;
|
||
|
||
if (base == (char *)0)
|
||
{
|
||
#ifdef P_tmpdir
|
||
if (access (P_tmpdir, R_OK | W_OK) == 0)
|
||
base = P_tmpdir;
|
||
#endif
|
||
if (base == (char *)0)
|
||
{
|
||
if (access ("/usr/tmp", R_OK | W_OK) == 0)
|
||
base = "/usr/tmp/";
|
||
else
|
||
base = "/tmp/";
|
||
}
|
||
}
|
||
|
||
len = strlen (base);
|
||
temp_filename = xmalloc (len + sizeof("/ccXXXXXX") + 1);
|
||
strcpy (temp_filename, base);
|
||
if (len > 0 && temp_filename[len-1] != '/')
|
||
temp_filename[len++] = '/';
|
||
strcpy (temp_filename + len, "ccXXXXXX");
|
||
|
||
mktemp (temp_filename);
|
||
temp_filename_length = strlen (temp_filename);
|
||
}
|
||
|
||
/* Routine to add variables to the environment. */
|
||
|
||
#ifndef HAVE_PUTENV
|
||
|
||
int
|
||
putenv (str)
|
||
char *str;
|
||
{
|
||
#ifndef VMS /* nor about VMS */
|
||
|
||
extern char **environ;
|
||
char **old_environ = environ;
|
||
char **envp;
|
||
int num_envs = 0;
|
||
int name_len = 1;
|
||
char *p = str;
|
||
int ch;
|
||
|
||
while ((ch = *p++) != '\0' && ch != '=')
|
||
name_len++;
|
||
|
||
if (!ch)
|
||
abort ();
|
||
|
||
/* Search for replacing an existing environment variable, and
|
||
count the number of total environment variables. */
|
||
for (envp = old_environ; *envp; envp++)
|
||
{
|
||
num_envs++;
|
||
if (!strncmp (str, *envp, name_len))
|
||
{
|
||
*envp = str;
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
/* Add a new environment variable */
|
||
environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
|
||
*environ = str;
|
||
bcopy ((char *) old_environ, (char *) (environ + 1),
|
||
sizeof (char *) * (num_envs+1));
|
||
|
||
return 0;
|
||
#endif /* VMS */
|
||
}
|
||
|
||
#endif /* HAVE_PUTENV */
|
||
|
||
/* By default, colon separates directories in a path. */
|
||
#ifndef PATH_SEPARATOR
|
||
#define PATH_SEPARATOR ':'
|
||
#endif
|
||
|
||
/* We maintain two prefix lists: one from COMPILER_PATH environment variable
|
||
and one from the PATH variable. */
|
||
|
||
static struct path_prefix cpath, path;
|
||
|
||
#ifdef CROSS_COMPILE
|
||
/* This is the name of the target machine. We use it to form the name
|
||
of the files to execute. */
|
||
|
||
static char *target_machine = TARGET_MACHINE;
|
||
#endif
|
||
|
||
/* Names under which we were executed. Never return one of those files in our
|
||
searches. */
|
||
|
||
static struct path_prefix our_file_names;
|
||
|
||
/* Determine if STRING is in PPREFIX.
|
||
|
||
This utility is currently only used to look up file names. Prefix lists
|
||
record directory names. This matters to us because the latter has a
|
||
trailing slash, so I've added a flag to handle both. */
|
||
|
||
static int
|
||
is_in_prefix_list (pprefix, string, filep)
|
||
struct path_prefix *pprefix;
|
||
char *string;
|
||
int filep;
|
||
{
|
||
struct prefix_list *pl;
|
||
|
||
if (filep)
|
||
{
|
||
int len = strlen (string);
|
||
|
||
for (pl = pprefix->plist; pl; pl = pl->next)
|
||
{
|
||
if (strncmp (pl->prefix, string, len) == 0
|
||
&& strcmp (pl->prefix + len, "/") == 0)
|
||
return 1;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
for (pl = pprefix->plist; pl; pl = pl->next)
|
||
{
|
||
if (strcmp (pl->prefix, string) == 0)
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Search for NAME using prefix list PPREFIX. We only look for executable
|
||
files.
|
||
|
||
Return 0 if not found, otherwise return its name, allocated with malloc. */
|
||
|
||
static char *
|
||
find_a_file (pprefix, name)
|
||
struct path_prefix *pprefix;
|
||
char *name;
|
||
{
|
||
char *temp;
|
||
struct prefix_list *pl;
|
||
int len = pprefix->max_len + strlen (name) + 1;
|
||
|
||
#ifdef EXECUTABLE_SUFFIX
|
||
len += strlen (EXECUTABLE_SUFFIX);
|
||
#endif
|
||
|
||
temp = xmalloc (len);
|
||
|
||
/* Determine the filename to execute (special case for absolute paths). */
|
||
|
||
if (*name == '/')
|
||
{
|
||
if (access (name, X_OK) == 0)
|
||
{
|
||
strcpy (temp, name);
|
||
return temp;
|
||
}
|
||
}
|
||
else
|
||
for (pl = pprefix->plist; pl; pl = pl->next)
|
||
{
|
||
strcpy (temp, pl->prefix);
|
||
strcat (temp, name);
|
||
if (! is_in_prefix_list (&our_file_names, temp, 1)
|
||
/* This is a kludge, but there seems no way around it. */
|
||
&& strcmp (temp, "./ld") != 0
|
||
&& access (temp, X_OK) == 0)
|
||
return temp;
|
||
|
||
#ifdef EXECUTABLE_SUFFIX
|
||
/* Some systems have a suffix for executable files.
|
||
So try appending that. */
|
||
strcat (temp, EXECUTABLE_SUFFIX);
|
||
if (! is_in_prefix_list (&our_file_names, temp, 1)
|
||
&& access (temp, X_OK) == 0)
|
||
return temp;
|
||
#endif
|
||
}
|
||
|
||
free (temp);
|
||
return 0;
|
||
}
|
||
|
||
/* Add an entry for PREFIX to prefix list PPREFIX. */
|
||
|
||
static void
|
||
add_prefix (pprefix, prefix)
|
||
struct path_prefix *pprefix;
|
||
char *prefix;
|
||
{
|
||
struct prefix_list *pl, **prev;
|
||
int len;
|
||
|
||
if (pprefix->plist)
|
||
{
|
||
for (pl = pprefix->plist; pl->next; pl = pl->next)
|
||
;
|
||
prev = &pl->next;
|
||
}
|
||
else
|
||
prev = &pprefix->plist;
|
||
|
||
/* Keep track of the longest prefix */
|
||
|
||
len = strlen (prefix);
|
||
if (len > pprefix->max_len)
|
||
pprefix->max_len = len;
|
||
|
||
pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
|
||
pl->prefix = savestring (prefix, len);
|
||
|
||
if (*prev)
|
||
pl->next = *prev;
|
||
else
|
||
pl->next = (struct prefix_list *) 0;
|
||
*prev = pl;
|
||
}
|
||
|
||
/* Take the value of the environment variable ENV, break it into a path, and
|
||
add of the entries to PPREFIX. */
|
||
|
||
static void
|
||
prefix_from_env (env, pprefix)
|
||
char *env;
|
||
struct path_prefix *pprefix;
|
||
{
|
||
char *p = getenv (env);
|
||
|
||
if (p)
|
||
prefix_from_string (p, pprefix);
|
||
}
|
||
|
||
static void
|
||
prefix_from_string (p, pprefix)
|
||
char *p;
|
||
struct path_prefix *pprefix;
|
||
{
|
||
char *startp, *endp;
|
||
char *nstore = (char *) xmalloc (strlen (p) + 3);
|
||
|
||
startp = endp = p;
|
||
while (1)
|
||
{
|
||
if (*endp == PATH_SEPARATOR || *endp == 0)
|
||
{
|
||
strncpy (nstore, startp, endp-startp);
|
||
if (endp == startp)
|
||
{
|
||
strcpy (nstore, "./");
|
||
}
|
||
else if (endp[-1] != '/')
|
||
{
|
||
nstore[endp-startp] = '/';
|
||
nstore[endp-startp+1] = 0;
|
||
}
|
||
else
|
||
nstore[endp-startp] = 0;
|
||
|
||
add_prefix (pprefix, nstore);
|
||
if (*endp == 0)
|
||
break;
|
||
endp = startp = endp + 1;
|
||
}
|
||
else
|
||
endp++;
|
||
}
|
||
}
|
||
|
||
/* Main program. */
|
||
|
||
int
|
||
main (argc, argv)
|
||
int argc;
|
||
char *argv[];
|
||
{
|
||
char *ld_suffix = "ld";
|
||
char *full_ld_suffix = ld_suffix;
|
||
char *real_ld_suffix = "real-ld";
|
||
char *full_real_ld_suffix = real_ld_suffix;
|
||
char *collect_ld_suffix = "collect-ld";
|
||
char *nm_suffix = "nm";
|
||
char *full_nm_suffix = nm_suffix;
|
||
char *gnm_suffix = "gnm";
|
||
char *full_gnm_suffix = gnm_suffix;
|
||
#ifdef LDD_SUFFIX
|
||
char *ldd_suffix = LDD_SUFFIX;
|
||
char *full_ldd_suffix = ldd_suffix;
|
||
#endif
|
||
char *strip_suffix = "strip";
|
||
char *full_strip_suffix = strip_suffix;
|
||
char *gstrip_suffix = "gstrip";
|
||
char *full_gstrip_suffix = gstrip_suffix;
|
||
char *arg;
|
||
FILE *outf, *exportf;
|
||
char *ld_file_name;
|
||
char *collect_name;
|
||
char *collect_names;
|
||
char *p;
|
||
char **c_argv;
|
||
char **c_ptr;
|
||
char **ld1_argv = (char **) xcalloc (sizeof (char *), argc+3);
|
||
char **ld1 = ld1_argv;
|
||
char **ld2_argv = (char **) xcalloc (sizeof (char *), argc+6);
|
||
char **ld2 = ld2_argv;
|
||
char **object_lst = (char **) xcalloc (sizeof (char *), argc);
|
||
char **object = object_lst;
|
||
int first_file;
|
||
int num_c_args = argc+7;
|
||
|
||
#ifdef DEBUG
|
||
debug = 1;
|
||
vflag = 1;
|
||
#endif
|
||
|
||
output_file = "a.out";
|
||
|
||
obstack_begin (&temporary_obstack, 0);
|
||
obstack_begin (&permanent_obstack, 0);
|
||
temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
|
||
current_demangling_style = gnu_demangling;
|
||
|
||
/* We must check that we do not call ourselves in an infinite
|
||
recursion loop. We append the name used for us to the COLLECT_NAMES
|
||
environment variable.
|
||
|
||
In practice, collect will rarely invoke itself. This can happen now
|
||
that we are no longer called gld. A perfect example is when running
|
||
gcc in a build directory that has been installed. When looking for
|
||
ld's, we'll find our installed version and believe that's the real ld. */
|
||
|
||
/* We must also append COLLECT_NAME to COLLECT_NAMES to watch for the
|
||
previous version of collect (the one that used COLLECT_NAME and only
|
||
handled two levels of recursion). If we don't we may mutually recurse
|
||
forever. This can happen (I think) when bootstrapping the old version
|
||
and a new one is installed (rare, but we should handle it).
|
||
??? Hopefully references to COLLECT_NAME can be removed at some point. */
|
||
|
||
collect_name = (char *) getenv ("COLLECT_NAME");
|
||
collect_names = (char *) getenv ("COLLECT_NAMES");
|
||
|
||
p = (char *) xmalloc (strlen ("COLLECT_NAMES=")
|
||
+ (collect_name ? strlen (collect_name) + 1 : 0)
|
||
+ (collect_names ? strlen (collect_names) + 1 : 0)
|
||
+ strlen (argv[0]) + 1);
|
||
strcpy (p, "COLLECT_NAMES=");
|
||
if (collect_name != 0)
|
||
sprintf (p + strlen (p), "%s%c", collect_name, PATH_SEPARATOR);
|
||
if (collect_names != 0)
|
||
sprintf (p + strlen (p), "%s%c", collect_names, PATH_SEPARATOR);
|
||
strcat (p, argv[0]);
|
||
putenv (p);
|
||
|
||
prefix_from_env ("COLLECT_NAMES", &our_file_names);
|
||
|
||
/* Set environment variable COLLECT_NAME to our name so the previous version
|
||
of collect won't find us. If it does we'll mutually recurse forever.
|
||
This can happen when bootstrapping the new version and an old version is
|
||
installed.
|
||
??? Hopefully this bit of code can be removed at some point. */
|
||
|
||
p = xmalloc (strlen ("COLLECT_NAME=") + strlen (argv[0]) + 1);
|
||
sprintf (p, "COLLECT_NAME=%s", argv[0]);
|
||
putenv (p);
|
||
|
||
p = (char *) getenv ("COLLECT_GCC_OPTIONS");
|
||
if (p)
|
||
while (*p)
|
||
{
|
||
char *q = p;
|
||
while (*q && *q != ' ') q++;
|
||
if (*p == '-' && p[1] == 'm')
|
||
num_c_args++;
|
||
|
||
if (*q) q++;
|
||
p = q;
|
||
}
|
||
|
||
c_ptr = c_argv = (char **) xcalloc (sizeof (char *), num_c_args);
|
||
|
||
if (argc < 2)
|
||
fatal ("no arguments");
|
||
|
||
#ifdef SIGQUIT
|
||
if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
|
||
signal (SIGQUIT, handler);
|
||
#endif
|
||
if (signal (SIGINT, SIG_IGN) != SIG_IGN)
|
||
signal (SIGINT, handler);
|
||
#ifdef SIGALRM
|
||
if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
|
||
signal (SIGALRM, handler);
|
||
#endif
|
||
#ifdef SIGHUP
|
||
if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
|
||
signal (SIGHUP, handler);
|
||
#endif
|
||
if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
|
||
signal (SIGSEGV, handler);
|
||
#ifdef SIGBUS
|
||
if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
|
||
signal (SIGBUS, handler);
|
||
#endif
|
||
|
||
/* Extract COMPILER_PATH and PATH into our prefix list. */
|
||
prefix_from_env ("COMPILER_PATH", &cpath);
|
||
prefix_from_env ("PATH", &path);
|
||
|
||
#ifdef CROSS_COMPILE
|
||
/* If we look for a program in the compiler directories, we just use
|
||
the short name, since these directories are already system-specific.
|
||
But it we look for a took in the system directories, we need to
|
||
qualify the program name with the target machine. */
|
||
|
||
full_ld_suffix
|
||
= xcalloc (strlen (ld_suffix) + strlen (target_machine) + 2, 1);
|
||
strcpy (full_ld_suffix, target_machine);
|
||
strcat (full_ld_suffix, "-");
|
||
strcat (full_ld_suffix, ld_suffix);
|
||
|
||
full_real_ld_suffix
|
||
= xcalloc (strlen (real_ld_suffix) + strlen (target_machine) + 2, 1);
|
||
strcpy (full_real_ld_suffix, target_machine);
|
||
strcat (full_real_ld_suffix, "-");
|
||
strcat (full_real_ld_suffix, real_ld_suffix);
|
||
|
||
#if 0
|
||
full_gld_suffix
|
||
= xcalloc (strlen (gld_suffix) + strlen (target_machine) + 2, 1);
|
||
strcpy (full_gld_suffix, target_machine);
|
||
strcat (full_gld_suffix, "-");
|
||
strcat (full_gld_suffix, gld_suffix);
|
||
#endif
|
||
|
||
full_nm_suffix
|
||
= xcalloc (strlen (nm_suffix) + strlen (target_machine) + 2, 1);
|
||
strcpy (full_nm_suffix, target_machine);
|
||
strcat (full_nm_suffix, "-");
|
||
strcat (full_nm_suffix, nm_suffix);
|
||
|
||
full_gnm_suffix
|
||
= xcalloc (strlen (gnm_suffix) + strlen (target_machine) + 2, 1);
|
||
strcpy (full_gnm_suffix, target_machine);
|
||
strcat (full_gnm_suffix, "-");
|
||
strcat (full_gnm_suffix, gnm_suffix);
|
||
|
||
#ifdef LDD_SUFFIX
|
||
full_ldd_suffix
|
||
= xcalloc (strlen (ldd_suffix) + strlen (target_machine) + 2, 1);
|
||
strcpy (full_ldd_suffix, target_machine);
|
||
strcat (full_ldd_suffix, "-");
|
||
strcat (full_ldd_suffix, ldd_suffix);
|
||
#endif
|
||
|
||
full_strip_suffix
|
||
= xcalloc (strlen (strip_suffix) + strlen (target_machine) + 2, 1);
|
||
strcpy (full_strip_suffix, target_machine);
|
||
strcat (full_strip_suffix, "-");
|
||
strcat (full_strip_suffix, strip_suffix);
|
||
|
||
full_gstrip_suffix
|
||
= xcalloc (strlen (gstrip_suffix) + strlen (target_machine) + 2, 1);
|
||
strcpy (full_gstrip_suffix, target_machine);
|
||
strcat (full_gstrip_suffix, "-");
|
||
strcat (full_gstrip_suffix, gstrip_suffix);
|
||
#endif /* CROSS_COMPILE */
|
||
|
||
/* Try to discover a valid linker/nm/strip to use. */
|
||
|
||
/* Maybe we know the right file to use (if not cross). */
|
||
#ifdef REAL_LD_FILE_NAME
|
||
ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
|
||
if (ld_file_name == 0)
|
||
#endif
|
||
/* Search the (target-specific) compiler dirs for ld'. */
|
||
ld_file_name = find_a_file (&cpath, real_ld_suffix);
|
||
/* Likewise for `collect-ld'. */
|
||
if (ld_file_name == 0)
|
||
ld_file_name = find_a_file (&cpath, collect_ld_suffix);
|
||
/* Search the compiler directories for `ld'. We have protection against
|
||
recursive calls in find_a_file. */
|
||
if (ld_file_name == 0)
|
||
ld_file_name = find_a_file (&cpath, ld_suffix);
|
||
/* Search the ordinary system bin directories
|
||
for `ld' (if native linking) or `TARGET-ld' (if cross). */
|
||
if (ld_file_name == 0)
|
||
ld_file_name = find_a_file (&path, full_ld_suffix);
|
||
|
||
/* If we've invoked ourselves, try again with LD_FILE_NAME. */
|
||
|
||
if (collect_names != 0)
|
||
{
|
||
if (ld_file_name != 0)
|
||
{
|
||
argv[0] = ld_file_name;
|
||
execvp (argv[0], argv);
|
||
}
|
||
fatal ("cannot find `ld'");
|
||
}
|
||
|
||
#ifdef REAL_NM_FILE_NAME
|
||
nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
|
||
if (nm_file_name == 0)
|
||
#endif
|
||
nm_file_name = find_a_file (&cpath, gnm_suffix);
|
||
if (nm_file_name == 0)
|
||
nm_file_name = find_a_file (&path, full_gnm_suffix);
|
||
if (nm_file_name == 0)
|
||
nm_file_name = find_a_file (&cpath, nm_suffix);
|
||
if (nm_file_name == 0)
|
||
nm_file_name = find_a_file (&path, full_nm_suffix);
|
||
|
||
#ifdef LDD_SUFFIX
|
||
ldd_file_name = find_a_file (&cpath, ldd_suffix);
|
||
if (ldd_file_name == 0)
|
||
ldd_file_name = find_a_file (&path, full_ldd_suffix);
|
||
#endif
|
||
|
||
#ifdef REAL_STRIP_FILE_NAME
|
||
strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
|
||
if (strip_file_name == 0)
|
||
#endif
|
||
strip_file_name = find_a_file (&cpath, gstrip_suffix);
|
||
if (strip_file_name == 0)
|
||
strip_file_name = find_a_file (&path, full_gstrip_suffix);
|
||
if (strip_file_name == 0)
|
||
strip_file_name = find_a_file (&cpath, strip_suffix);
|
||
if (strip_file_name == 0)
|
||
strip_file_name = find_a_file (&path, full_strip_suffix);
|
||
|
||
/* Determine the full path name of the C compiler to use. */
|
||
c_file_name = getenv ("COLLECT_GCC");
|
||
if (c_file_name == 0)
|
||
{
|
||
#ifdef CROSS_COMPILE
|
||
c_file_name = xcalloc (sizeof ("gcc-") + strlen (target_machine) + 1, 1);
|
||
strcpy (c_file_name, target_machine);
|
||
strcat (c_file_name, "-gcc");
|
||
#else
|
||
c_file_name = "gcc";
|
||
#endif
|
||
}
|
||
|
||
p = find_a_file (&cpath, c_file_name);
|
||
|
||
/* Here it should be safe to use the system search path since we should have
|
||
already qualified the name of the compiler when it is needed. */
|
||
if (p == 0)
|
||
p = find_a_file (&path, c_file_name);
|
||
|
||
if (p)
|
||
c_file_name = p;
|
||
|
||
*ld1++ = *ld2++ = ld_file_name;
|
||
|
||
/* Make temp file names. */
|
||
choose_temp_base ();
|
||
c_file = xcalloc (temp_filename_length + sizeof (".c"), 1);
|
||
o_file = xcalloc (temp_filename_length + sizeof (".o"), 1);
|
||
export_file = xmalloc (temp_filename_length + sizeof (".x"));
|
||
ldout = xmalloc (temp_filename_length + sizeof (".ld"));
|
||
sprintf (ldout, "%s.ld", temp_filename);
|
||
sprintf (c_file, "%s.c", temp_filename);
|
||
sprintf (o_file, "%s.o", temp_filename);
|
||
sprintf (export_file, "%s.x", temp_filename);
|
||
*c_ptr++ = c_file_name;
|
||
*c_ptr++ = "-c";
|
||
*c_ptr++ = "-o";
|
||
*c_ptr++ = o_file;
|
||
|
||
/* !!! When GCC calls collect2,
|
||
it does not know whether it is calling collect2 or ld.
|
||
So collect2 cannot meaningfully understand any options
|
||
except those ld understands.
|
||
If you propose to make GCC pass some other option,
|
||
just imagine what will happen if ld is really ld!!! */
|
||
|
||
/* Parse arguments. Remember output file spec, pass the rest to ld. */
|
||
/* After the first file, put in the c++ rt0. */
|
||
|
||
first_file = 1;
|
||
while ((arg = *++argv) != (char *)0)
|
||
{
|
||
*ld1++ = *ld2++ = arg;
|
||
|
||
if (arg[0] == '-')
|
||
{
|
||
switch (arg[1])
|
||
{
|
||
case 'd':
|
||
if (!strcmp (arg, "-debug"))
|
||
{
|
||
debug = 1;
|
||
vflag = 1;
|
||
ld1--;
|
||
ld2--;
|
||
}
|
||
break;
|
||
|
||
case 'l':
|
||
if (first_file)
|
||
{
|
||
/* place o_file BEFORE this argument! */
|
||
first_file = 0;
|
||
ld2--;
|
||
*ld2++ = o_file;
|
||
*ld2++ = arg;
|
||
}
|
||
break;
|
||
|
||
case 'o':
|
||
if (arg[2] == '\0')
|
||
output_file = *ld1++ = *ld2++ = *++argv;
|
||
else
|
||
output_file = &arg[2];
|
||
break;
|
||
|
||
case 'r':
|
||
if (arg[2] == '\0')
|
||
rflag = 1;
|
||
break;
|
||
|
||
case 's':
|
||
if (arg[2] == '\0' && do_collecting)
|
||
{
|
||
/* We must strip after the nm run, otherwise C++ linking
|
||
won't work. Thus we strip in the second ld run, or
|
||
else with strip if there is no second ld run. */
|
||
strip_flag = 1;
|
||
ld1--;
|
||
}
|
||
break;
|
||
|
||
case 'v':
|
||
if (arg[2] == '\0')
|
||
vflag = 1;
|
||
break;
|
||
}
|
||
}
|
||
else if ((p = rindex (arg, '.')) != (char *)0
|
||
&& (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0))
|
||
{
|
||
if (first_file)
|
||
{
|
||
first_file = 0;
|
||
if (p[1] == 'o')
|
||
*ld2++ = o_file;
|
||
else
|
||
{
|
||
/* place o_file BEFORE this argument! */
|
||
ld2--;
|
||
*ld2++ = o_file;
|
||
*ld2++ = arg;
|
||
}
|
||
}
|
||
if (p[1] == 'o')
|
||
*object++ = arg;
|
||
}
|
||
}
|
||
|
||
/* Get any options that the upper GCC wants to pass to the sub-GCC. */
|
||
p = (char *) getenv ("COLLECT_GCC_OPTIONS");
|
||
if (p)
|
||
while (*p)
|
||
{
|
||
char *q = p;
|
||
while (*q && *q != ' ') q++;
|
||
if (*p == '-' && (p[1] == 'm' || p[1] == 'f'))
|
||
*c_ptr++ = savestring (p, q - p);
|
||
if (strncmp (p, "-shared", sizeof ("shared") - 1) == 0)
|
||
shared_obj = 1;
|
||
|
||
if (*q) q++;
|
||
p = q;
|
||
}
|
||
|
||
#ifdef COLLECT_EXPORT_LIST
|
||
/* The AIX linker will discard static constructors in object files if
|
||
nothing else in the file is referenced, so look at them first. */
|
||
while (object_lst < object)
|
||
scan_prog_file (*object_lst++, PASS_OBJ);
|
||
|
||
{
|
||
char *buf = alloca (strlen (export_file) + 5);
|
||
sprintf (buf, "-bE:%s", export_file);
|
||
*ld1++ = buf;
|
||
*ld2++ = buf;
|
||
exportf = fopen (export_file, "w");
|
||
if (exportf == (FILE *)0)
|
||
fatal_perror ("%s", export_file);
|
||
write_export_file (exportf);
|
||
if (fclose (exportf))
|
||
fatal_perror ("closing %s", export_file);
|
||
}
|
||
#endif
|
||
|
||
*c_ptr++ = c_file;
|
||
*object = *c_ptr = *ld1 = (char *)0;
|
||
|
||
if (vflag)
|
||
{
|
||
fprintf (stderr, "collect2 version %s", version_string);
|
||
#ifdef TARGET_VERSION
|
||
TARGET_VERSION;
|
||
#endif
|
||
fprintf (stderr, "\n");
|
||
}
|
||
|
||
if (debug)
|
||
{
|
||
char *ptr;
|
||
fprintf (stderr, "ld_file_name = %s\n",
|
||
(ld_file_name ? ld_file_name : "not found"));
|
||
fprintf (stderr, "c_file_name = %s\n",
|
||
(c_file_name ? c_file_name : "not found"));
|
||
fprintf (stderr, "nm_file_name = %s\n",
|
||
(nm_file_name ? nm_file_name : "not found"));
|
||
#ifdef LDD_SUFFIX
|
||
fprintf (stderr, "ldd_file_name = %s\n",
|
||
(ldd_file_name ? ldd_file_name : "not found"));
|
||
#endif
|
||
fprintf (stderr, "strip_file_name = %s\n",
|
||
(strip_file_name ? strip_file_name : "not found"));
|
||
fprintf (stderr, "c_file = %s\n",
|
||
(c_file ? c_file : "not found"));
|
||
fprintf (stderr, "o_file = %s\n",
|
||
(o_file ? o_file : "not found"));
|
||
|
||
ptr = getenv ("COLLECT_NAMES");
|
||
if (ptr)
|
||
fprintf (stderr, "COLLECT_NAMES = %s\n", ptr);
|
||
|
||
ptr = getenv ("COLLECT_GCC_OPTIONS");
|
||
if (ptr)
|
||
fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
|
||
|
||
ptr = getenv ("COLLECT_GCC");
|
||
if (ptr)
|
||
fprintf (stderr, "COLLECT_GCC = %s\n", ptr);
|
||
|
||
ptr = getenv ("COMPILER_PATH");
|
||
if (ptr)
|
||
fprintf (stderr, "COMPILER_PATH = %s\n", ptr);
|
||
|
||
ptr = getenv ("LIBRARY_PATH");
|
||
if (ptr)
|
||
fprintf (stderr, "LIBRARY_PATH = %s\n", ptr);
|
||
|
||
fprintf (stderr, "\n");
|
||
}
|
||
|
||
/* Load the program, searching all libraries. */
|
||
|
||
collect_execute ("ld", ld1_argv, ldout);
|
||
do_wait ("ld");
|
||
dump_file (ldout);
|
||
unlink (ldout);
|
||
|
||
/* If -r or they'll be run via some other method, don't build the
|
||
constructor or destructor list, just return now. */
|
||
if (rflag || ! do_collecting)
|
||
return 0;
|
||
|
||
/* Examine the namelist with nm and search it for static constructors
|
||
and destructors to call.
|
||
Write the constructor and destructor tables to a .s file and reload. */
|
||
|
||
scan_prog_file (output_file, PASS_FIRST);
|
||
|
||
#ifdef SCAN_LIBRARIES
|
||
scan_libraries (output_file);
|
||
#endif
|
||
|
||
if (debug)
|
||
{
|
||
fprintf (stderr, "%d constructor(s) found\n", constructors.number);
|
||
fprintf (stderr, "%d destructor(s) found\n", destructors.number);
|
||
}
|
||
|
||
if (constructors.number == 0 && destructors.number == 0
|
||
#ifdef LDD_SUFFIX
|
||
/* If we will be running these functions ourselves, we want to emit
|
||
stubs into the shared library so that we don't have to relink
|
||
dependent programs when we add static objects. */
|
||
&& ! shared_obj
|
||
#endif
|
||
)
|
||
{
|
||
/* Strip now if it was requested on the command line. */
|
||
if (strip_flag)
|
||
{
|
||
char **strip_argv = (char **) xcalloc (sizeof (char *), 3);
|
||
strip_argv[0] = strip_file_name;
|
||
strip_argv[1] = output_file;
|
||
strip_argv[2] = (char *) 0;
|
||
fork_execute ("strip", strip_argv);
|
||
}
|
||
|
||
#ifdef COLLECT_EXPORT_LIST
|
||
maybe_unlink (export_file);
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
maybe_unlink(output_file);
|
||
outf = fopen (c_file, "w");
|
||
if (outf == (FILE *)0)
|
||
fatal_perror ("%s", c_file);
|
||
|
||
write_c_file (outf, c_file);
|
||
|
||
if (fclose (outf))
|
||
fatal_perror ("closing %s", c_file);
|
||
|
||
/* Tell the linker that we have initializer and finalizer functions. */
|
||
#ifdef LD_INIT_SWITCH
|
||
*ld2++ = LD_INIT_SWITCH;
|
||
*ld2++ = initname;
|
||
*ld2++ = LD_FINI_SWITCH;
|
||
*ld2++ = fininame;
|
||
#endif
|
||
*ld2 = (char*)0;
|
||
|
||
#ifdef COLLECT_EXPORT_LIST
|
||
if (shared_obj)
|
||
{
|
||
add_to_list (&exports, initname);
|
||
add_to_list (&exports, fininame);
|
||
add_to_list (&exports, "_GLOBAL__DI");
|
||
add_to_list (&exports, "_GLOBAL__DD");
|
||
exportf = fopen (export_file, "w");
|
||
if (exportf == (FILE *)0)
|
||
fatal_perror ("%s", export_file);
|
||
write_export_file (exportf);
|
||
if (fclose (exportf))
|
||
fatal_perror ("closing %s", export_file);
|
||
}
|
||
#endif
|
||
|
||
if (debug)
|
||
{
|
||
fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
|
||
output_file, c_file);
|
||
write_c_file (stderr, "stderr");
|
||
fprintf (stderr, "========== end of c_file\n\n");
|
||
#ifdef COLLECT_EXPORT_LIST
|
||
fprintf (stderr, "\n========== export_file = %s\n", export_file);
|
||
write_export_file (stderr);
|
||
fprintf (stderr, "========== end of export_file\n\n");
|
||
#endif
|
||
}
|
||
|
||
/* Assemble the constructor and destructor tables.
|
||
Link the tables in with the rest of the program. */
|
||
|
||
fork_execute ("gcc", c_argv);
|
||
fork_execute ("ld", ld2_argv);
|
||
|
||
/* Let scan_prog_file do any final mods (OSF/rose needs this for
|
||
constructors/destructors in shared libraries. */
|
||
scan_prog_file (output_file, PASS_SECOND);
|
||
|
||
maybe_unlink (c_file);
|
||
maybe_unlink (o_file);
|
||
maybe_unlink (export_file);
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Wait for a process to finish, and exit if a non-zero status is found. */
|
||
|
||
int
|
||
collect_wait (prog)
|
||
char *prog;
|
||
{
|
||
int status;
|
||
|
||
wait (&status);
|
||
if (status)
|
||
{
|
||
if (WIFSIGNALED (status))
|
||
{
|
||
int sig = WTERMSIG (status);
|
||
#ifdef NO_SYS_SIGLIST
|
||
error ("%s terminated with signal %d %s",
|
||
prog,
|
||
sig,
|
||
(status & 0200) ? ", core dumped" : "");
|
||
#else
|
||
error ("%s terminated with signal %d [%s]%s",
|
||
prog,
|
||
sig,
|
||
sys_siglist[sig],
|
||
(status & 0200) ? ", core dumped" : "");
|
||
#endif
|
||
|
||
collect_exit (127);
|
||
}
|
||
|
||
if (WIFEXITED (status))
|
||
return WEXITSTATUS (status);
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
do_wait (prog)
|
||
char *prog;
|
||
{
|
||
int ret = collect_wait (prog);
|
||
if (ret != 0)
|
||
{
|
||
error ("%s returned %d exit status", prog, ret);
|
||
collect_exit (ret);
|
||
}
|
||
}
|
||
|
||
|
||
/* Fork and execute a program, and wait for the reply. */
|
||
|
||
void
|
||
collect_execute (prog, argv, redir)
|
||
char *prog;
|
||
char **argv;
|
||
char *redir;
|
||
{
|
||
int pid;
|
||
|
||
if (vflag || debug)
|
||
{
|
||
char **p_argv;
|
||
char *str;
|
||
|
||
if (argv[0])
|
||
fprintf (stderr, "%s", argv[0]);
|
||
else
|
||
fprintf (stderr, "[cannot find %s]", prog);
|
||
|
||
for (p_argv = &argv[1]; (str = *p_argv) != (char *)0; p_argv++)
|
||
fprintf (stderr, " %s", str);
|
||
|
||
fprintf (stderr, "\n");
|
||
}
|
||
|
||
fflush (stdout);
|
||
fflush (stderr);
|
||
|
||
/* If we can't find a program we need, complain error. Do this here
|
||
since we might not end up needing something that we couldn't find. */
|
||
|
||
if (argv[0] == 0)
|
||
fatal ("cannot find `%s'", prog);
|
||
|
||
pid = vfork ();
|
||
if (pid == -1)
|
||
{
|
||
#ifdef vfork
|
||
fatal_perror ("fork");
|
||
#else
|
||
fatal_perror ("vfork");
|
||
#endif
|
||
}
|
||
|
||
if (pid == 0) /* child context */
|
||
{
|
||
if (redir)
|
||
{
|
||
unlink (redir);
|
||
if (freopen (redir, "a", stdout) == NULL)
|
||
fatal_perror ("redirecting stdout");
|
||
if (freopen (redir, "a", stderr) == NULL)
|
||
fatal_perror ("redirecting stderr");
|
||
}
|
||
|
||
execvp (argv[0], argv);
|
||
fatal_perror ("executing %s", prog);
|
||
}
|
||
}
|
||
|
||
static void
|
||
fork_execute (prog, argv)
|
||
char *prog;
|
||
char **argv;
|
||
{
|
||
collect_execute (prog, argv, NULL);
|
||
do_wait (prog);
|
||
}
|
||
|
||
/* Unlink a file unless we are debugging. */
|
||
|
||
static void
|
||
maybe_unlink (file)
|
||
char *file;
|
||
{
|
||
if (!debug)
|
||
unlink (file);
|
||
else
|
||
fprintf (stderr, "[Leaving %s]\n", file);
|
||
}
|
||
|
||
|
||
/* Add a name to a linked list. */
|
||
|
||
static void
|
||
add_to_list (head_ptr, name)
|
||
struct head *head_ptr;
|
||
char *name;
|
||
{
|
||
struct id *newid
|
||
= (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
|
||
struct id *p;
|
||
static long sequence_number = 0;
|
||
strcpy (newid->name, name);
|
||
|
||
if (head_ptr->first)
|
||
head_ptr->last->next = newid;
|
||
else
|
||
head_ptr->first = newid;
|
||
|
||
/* Check for duplicate symbols. */
|
||
for (p = head_ptr->first;
|
||
strcmp (name, p->name) != 0;
|
||
p = p->next)
|
||
;
|
||
if (p != newid)
|
||
{
|
||
head_ptr->last->next = 0;
|
||
free (newid);
|
||
return;
|
||
}
|
||
|
||
newid->sequence = ++sequence_number;
|
||
head_ptr->last = newid;
|
||
head_ptr->number++;
|
||
}
|
||
|
||
/* Write: `prefix', the names on list LIST, `suffix'. */
|
||
|
||
static void
|
||
write_list (stream, prefix, list)
|
||
FILE *stream;
|
||
char *prefix;
|
||
struct id *list;
|
||
{
|
||
while (list)
|
||
{
|
||
fprintf (stream, "%sx%d,\n", prefix, list->sequence);
|
||
list = list->next;
|
||
}
|
||
}
|
||
|
||
static void
|
||
write_list_with_asm (stream, prefix, list)
|
||
FILE *stream;
|
||
char *prefix;
|
||
struct id *list;
|
||
{
|
||
while (list)
|
||
{
|
||
fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
|
||
prefix, list->sequence, list->name);
|
||
list = list->next;
|
||
}
|
||
}
|
||
|
||
/* Write out the constructor and destructor tables statically (for a shared
|
||
object), along with the functions to execute them. */
|
||
|
||
static void
|
||
write_c_file_stat (stream, name)
|
||
FILE *stream;
|
||
char *name;
|
||
{
|
||
char *prefix, *p, *q;
|
||
|
||
/* Figure out name of output_file, stripping off .so version. */
|
||
p = rindex (output_file, '/');
|
||
if (p == 0)
|
||
p = (char *) output_file;
|
||
else
|
||
p++;
|
||
q = p;
|
||
while (q)
|
||
{
|
||
q = index (q,'.');
|
||
if (q == 0)
|
||
{
|
||
q = p + strlen (p);
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
if (strncmp (q, ".so", 3) == 0)
|
||
{
|
||
q += 3;
|
||
break;
|
||
}
|
||
else
|
||
q++;
|
||
}
|
||
}
|
||
/* q points to null at end of the string (or . of the .so version) */
|
||
prefix = xmalloc (q - p + 1);
|
||
strncpy (prefix, p, q - p);
|
||
prefix[q - p] = 0;
|
||
for (q = prefix; *q; q++)
|
||
if (!isalnum (*q))
|
||
*q = '_';
|
||
if (debug)
|
||
fprintf (stderr, "\nwrite_c_file - output name is %s, prefix is %s\n",
|
||
output_file, prefix);
|
||
|
||
#define INIT_NAME_FORMAT "_GLOBAL__FI_%s"
|
||
initname = xmalloc (strlen (prefix) + sizeof (INIT_NAME_FORMAT) - 2);
|
||
sprintf (initname, INIT_NAME_FORMAT, prefix);
|
||
|
||
#define FINI_NAME_FORMAT "_GLOBAL__FD_%s"
|
||
fininame = xmalloc (strlen (prefix) + sizeof (FINI_NAME_FORMAT) - 2);
|
||
sprintf (fininame, FINI_NAME_FORMAT, prefix);
|
||
|
||
free (prefix);
|
||
|
||
/* Write the tables as C code */
|
||
|
||
fprintf (stream, "static int count;\n");
|
||
fprintf (stream, "typedef void entry_pt();\n");
|
||
write_list_with_asm (stream, "extern entry_pt ", constructors.first);
|
||
fprintf (stream, "void %s() {\n", initname);
|
||
if (constructors.number > 0)
|
||
{
|
||
fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
|
||
write_list (stream, "\t\t", constructors.first);
|
||
fprintf (stream, "\t};\n");
|
||
fprintf (stream, "\tentry_pt **p;\n");
|
||
fprintf (stream, "\tif (count++ != 0) return;\n");
|
||
fprintf (stream, "\tp = ctors + %d;\n", constructors.number);
|
||
fprintf (stream, "\twhile (p > ctors) (*--p)();\n");
|
||
}
|
||
else
|
||
fprintf (stream, "\t++count;\n");
|
||
fprintf (stream, "}\n");
|
||
write_list_with_asm (stream, "extern entry_pt ", destructors.first);
|
||
fprintf (stream, "void %s() {\n", fininame);
|
||
if (destructors.number > 0)
|
||
{
|
||
fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
|
||
write_list (stream, "\t\t", destructors.first);
|
||
fprintf (stream, "\t};\n");
|
||
fprintf (stream, "\tentry_pt **p;\n");
|
||
fprintf (stream, "\tif (--count != 0) return;\n");
|
||
fprintf (stream, "\tp = dtors;\n");
|
||
fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n",
|
||
destructors.number);
|
||
}
|
||
fprintf (stream, "}\n");
|
||
|
||
if (shared_obj)
|
||
{
|
||
fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname);
|
||
fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame);
|
||
}
|
||
}
|
||
|
||
/* Write the constructor/destructor tables. */
|
||
|
||
static void
|
||
write_c_file_glob (stream, name)
|
||
FILE *stream;
|
||
char *name;
|
||
{
|
||
/* Write the tables as C code */
|
||
|
||
fprintf (stream, "typedef void entry_pt();\n\n");
|
||
|
||
write_list_with_asm (stream, "extern entry_pt ", constructors.first);
|
||
|
||
fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
|
||
fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number);
|
||
write_list (stream, "\t", constructors.first);
|
||
fprintf (stream, "\t0\n};\n\n");
|
||
|
||
write_list_with_asm (stream, "extern entry_pt ", destructors.first);
|
||
|
||
fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
|
||
fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number);
|
||
write_list (stream, "\t", destructors.first);
|
||
fprintf (stream, "\t0\n};\n\n");
|
||
|
||
fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
|
||
fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
|
||
}
|
||
|
||
static void
|
||
write_c_file (stream, name)
|
||
FILE *stream;
|
||
char *name;
|
||
{
|
||
#ifndef LD_INIT_SWITCH
|
||
if (! shared_obj)
|
||
write_c_file_glob (stream, name);
|
||
else
|
||
#endif
|
||
write_c_file_stat (stream, name);
|
||
}
|
||
|
||
static void
|
||
write_export_file (stream)
|
||
FILE *stream;
|
||
{
|
||
struct id *list = exports.first;
|
||
for (; list; list = list->next)
|
||
fprintf (stream, "%s\n", list->name);
|
||
}
|
||
|
||
#ifdef OBJECT_FORMAT_NONE
|
||
|
||
/* Generic version to scan the name list of the loaded program for
|
||
the symbols g++ uses for static constructors and destructors.
|
||
|
||
The constructor table begins at __CTOR_LIST__ and contains a count
|
||
of the number of pointers (or -1 if the constructors are built in a
|
||
separate section by the linker), followed by the pointers to the
|
||
constructor functions, terminated with a null pointer. The
|
||
destructor table has the same format, and begins at __DTOR_LIST__. */
|
||
|
||
static void
|
||
scan_prog_file (prog_name, which_pass)
|
||
char *prog_name;
|
||
enum pass which_pass;
|
||
{
|
||
void (*int_handler) ();
|
||
void (*quit_handler) ();
|
||
char *nm_argv[4];
|
||
int pid;
|
||
int argc = 0;
|
||
int pipe_fd[2];
|
||
char *p, buf[1024];
|
||
FILE *inf;
|
||
|
||
if (which_pass == PASS_SECOND)
|
||
return;
|
||
|
||
/* If we don't have an `nm', complain. */
|
||
if (nm_file_name == 0)
|
||
fatal ("cannot find `nm'");
|
||
|
||
nm_argv[argc++] = nm_file_name;
|
||
if (NM_FLAGS[0] != '\0')
|
||
nm_argv[argc++] = NM_FLAGS;
|
||
|
||
nm_argv[argc++] = prog_name;
|
||
nm_argv[argc++] = (char *)0;
|
||
|
||
if (pipe (pipe_fd) < 0)
|
||
fatal_perror ("pipe");
|
||
|
||
inf = fdopen (pipe_fd[0], "r");
|
||
if (inf == (FILE *)0)
|
||
fatal_perror ("fdopen");
|
||
|
||
/* Trace if needed. */
|
||
if (vflag)
|
||
{
|
||
char **p_argv;
|
||
char *str;
|
||
|
||
for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *)0; p_argv++)
|
||
fprintf (stderr, " %s", str);
|
||
|
||
fprintf (stderr, "\n");
|
||
}
|
||
|
||
fflush (stdout);
|
||
fflush (stderr);
|
||
|
||
/* Spawn child nm on pipe */
|
||
pid = vfork ();
|
||
if (pid == -1)
|
||
{
|
||
#ifdef vfork
|
||
fatal_perror ("fork");
|
||
#else
|
||
fatal_perror ("vfork");
|
||
#endif
|
||
}
|
||
|
||
if (pid == 0) /* child context */
|
||
{
|
||
/* setup stdout */
|
||
if (dup2 (pipe_fd[1], 1) < 0)
|
||
fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
|
||
|
||
if (close (pipe_fd[0]) < 0)
|
||
fatal_perror ("close (%d)", pipe_fd[0]);
|
||
|
||
if (close (pipe_fd[1]) < 0)
|
||
fatal_perror ("close (%d)", pipe_fd[1]);
|
||
|
||
execv (nm_file_name, nm_argv);
|
||
fatal_perror ("executing %s", nm_file_name);
|
||
}
|
||
|
||
/* Parent context from here on. */
|
||
int_handler = (void (*) ())signal (SIGINT, SIG_IGN);
|
||
#ifdef SIGQUIT
|
||
quit_handler = (void (*) ())signal (SIGQUIT, SIG_IGN);
|
||
#endif
|
||
|
||
if (close (pipe_fd[1]) < 0)
|
||
fatal_perror ("close (%d)", pipe_fd[1]);
|
||
|
||
if (debug)
|
||
fprintf (stderr, "\nnm output with constructors/destructors.\n");
|
||
|
||
/* Read each line of nm output. */
|
||
while (fgets (buf, sizeof buf, inf) != (char *)0)
|
||
{
|
||
int ch, ch2;
|
||
char *name, *end;
|
||
|
||
/* If it contains a constructor or destructor name, add the name
|
||
to the appropriate list. */
|
||
|
||
for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
|
||
if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
|
||
break;
|
||
|
||
if (ch != '_')
|
||
continue;
|
||
|
||
name = p;
|
||
/* Find the end of the symbol name.
|
||
Don't include `|', because Encore nm can tack that on the end. */
|
||
for (end = p; (ch2 = *end) != '\0' && !isspace (ch2) && ch2 != '|';
|
||
end++)
|
||
continue;
|
||
|
||
|
||
*end = '\0';
|
||
switch (is_ctor_dtor (name))
|
||
{
|
||
case 1:
|
||
if (which_pass != PASS_LIB)
|
||
add_to_list (&constructors, name);
|
||
break;
|
||
|
||
case 2:
|
||
if (which_pass != PASS_LIB)
|
||
add_to_list (&destructors, name);
|
||
break;
|
||
|
||
case 3:
|
||
if (which_pass != PASS_LIB)
|
||
fatal ("init function found in object %s", prog_name);
|
||
#ifndef LD_INIT_SWITCH
|
||
add_to_list (&constructors, name);
|
||
#endif
|
||
break;
|
||
|
||
case 4:
|
||
if (which_pass != PASS_LIB)
|
||
fatal ("fini function found in object %s", prog_name);
|
||
#ifndef LD_FINI_SWITCH
|
||
add_to_list (&destructors, name);
|
||
#endif
|
||
break;
|
||
|
||
default: /* not a constructor or destructor */
|
||
continue;
|
||
}
|
||
|
||
if (debug)
|
||
fprintf (stderr, "\t%s\n", buf);
|
||
}
|
||
|
||
if (debug)
|
||
fprintf (stderr, "\n");
|
||
|
||
if (fclose (inf) != 0)
|
||
fatal_perror ("fclose of pipe");
|
||
|
||
do_wait (nm_file_name);
|
||
|
||
signal (SIGINT, int_handler);
|
||
#ifdef SIGQUIT
|
||
signal (SIGQUIT, quit_handler);
|
||
#endif
|
||
}
|
||
|
||
#if SUNOS4_SHARED_LIBRARIES
|
||
|
||
/* Routines to scan the SunOS 4 _DYNAMIC structure to find shared libraries
|
||
that the output file depends upon and their initialization/finalization
|
||
routines, if any. */
|
||
|
||
#include <a.out.h>
|
||
#include <fcntl.h>
|
||
#include <link.h>
|
||
#include <sys/mman.h>
|
||
#include <sys/param.h>
|
||
#include <sys/unistd.h>
|
||
#include <sys/dir.h>
|
||
|
||
/* pointers to the object file */
|
||
unsigned object; /* address of memory mapped file */
|
||
unsigned objsize; /* size of memory mapped to file */
|
||
char * code; /* pointer to code segment */
|
||
char * data; /* pointer to data segment */
|
||
struct nlist *symtab; /* pointer to symbol table */
|
||
struct link_dynamic *ld;
|
||
struct link_dynamic_2 *ld_2;
|
||
struct head libraries;
|
||
|
||
/* Map the file indicated by NAME into memory and store its address. */
|
||
|
||
static void
|
||
mapfile (name)
|
||
char *name;
|
||
{
|
||
int fp;
|
||
struct stat s;
|
||
if ((fp = open (name, O_RDONLY)) == -1)
|
||
fatal ("unable to open file '%s'", name);
|
||
if (fstat (fp, &s) == -1)
|
||
fatal ("unable to stat file '%s'", name);
|
||
|
||
objsize = s.st_size;
|
||
object = (unsigned) mmap (0, objsize, PROT_READ|PROT_WRITE, MAP_PRIVATE,
|
||
fp, 0);
|
||
if (object == -1)
|
||
fatal ("unable to mmap file '%s'", name);
|
||
|
||
close (fp);
|
||
}
|
||
|
||
/* Helpers for locatelib. */
|
||
|
||
static char *libname;
|
||
|
||
static int
|
||
libselect (d)
|
||
struct direct *d;
|
||
{
|
||
return (strncmp (libname, d->d_name, strlen (libname)) == 0);
|
||
}
|
||
|
||
/* If one file has an additional numeric extension past LIBNAME, then put
|
||
that one first in the sort. If both files have additional numeric
|
||
extensions, then put the one with the higher number first in the sort.
|
||
|
||
We must verify that the extension is numeric, because Sun saves the
|
||
original versions of patched libraries with a .FCS extension. Files with
|
||
invalid extensions must go last in the sort, so that they won't be used. */
|
||
|
||
static int
|
||
libcompare (d1, d2)
|
||
struct direct **d1, **d2;
|
||
{
|
||
int i1, i2 = strlen (libname);
|
||
char *e1 = (*d1)->d_name + i2;
|
||
char *e2 = (*d2)->d_name + i2;
|
||
|
||
while (*e1 && *e2 && *e1 == '.' && *e2 == '.'
|
||
&& e1[1] && isdigit (e1[1]) && e2[1] && isdigit (e2[1]))
|
||
{
|
||
++e1;
|
||
++e2;
|
||
i1 = strtol (e1, &e1, 10);
|
||
i2 = strtol (e2, &e2, 10);
|
||
if (i1 != i2)
|
||
return i1 - i2;
|
||
}
|
||
|
||
if (*e1)
|
||
{
|
||
/* It has a valid numeric extension, prefer this one. */
|
||
if (*e1 == '.' && e1[1] && isdigit (e1[1]))
|
||
return 1;
|
||
/* It has a invalid numeric extension, must prefer the other one. */
|
||
else
|
||
return -1;
|
||
}
|
||
else if (*e2)
|
||
{
|
||
/* It has a valid numeric extension, prefer this one. */
|
||
if (*e2 == '.' && e2[1] && isdigit (e2[1]))
|
||
return -1;
|
||
/* It has a invalid numeric extension, must prefer the other one. */
|
||
else
|
||
return 1;
|
||
}
|
||
else
|
||
return 0;
|
||
}
|
||
|
||
/* Given the name NAME of a dynamic dependency, find its pathname and add
|
||
it to the list of libraries. */
|
||
|
||
static void
|
||
locatelib (name)
|
||
char *name;
|
||
{
|
||
static char **l;
|
||
static int cnt;
|
||
char buf[MAXPATHLEN];
|
||
char *p, *q;
|
||
char **pp;
|
||
|
||
if (l == 0)
|
||
{
|
||
char *ld_rules;
|
||
char *ldr = 0;
|
||
/* counting elements in array, need 1 extra for null */
|
||
cnt = 1;
|
||
ld_rules = (char *) (ld_2->ld_rules + code);
|
||
if (ld_rules)
|
||
{
|
||
cnt++;
|
||
for (; *ld_rules != 0; ld_rules++)
|
||
if (*ld_rules == ':')
|
||
cnt++;
|
||
ld_rules = (char *) (ld_2->ld_rules + code);
|
||
ldr = (char *) malloc (strlen (ld_rules) + 1);
|
||
strcpy (ldr, ld_rules);
|
||
}
|
||
p = getenv ("LD_LIBRARY_PATH");
|
||
q = 0;
|
||
if (p)
|
||
{
|
||
cnt++;
|
||
for (q = p ; *q != 0; q++)
|
||
if (*q == ':')
|
||
cnt++;
|
||
q = (char *) malloc (strlen (p) + 1);
|
||
strcpy (q, p);
|
||
}
|
||
l = (char **) malloc ((cnt + 3) * sizeof (char *));
|
||
pp = l;
|
||
if (ldr)
|
||
{
|
||
*pp++ = ldr;
|
||
for (; *ldr != 0; ldr++)
|
||
if (*ldr == ':')
|
||
{
|
||
*ldr++ = 0;
|
||
*pp++ = ldr;
|
||
}
|
||
}
|
||
if (q)
|
||
{
|
||
*pp++ = q;
|
||
for (; *q != 0; q++)
|
||
if (*q == ':')
|
||
{
|
||
*q++ = 0;
|
||
*pp++ = q;
|
||
}
|
||
}
|
||
/* built in directories are /lib, /usr/lib, and /usr/local/lib */
|
||
*pp++ = "/lib";
|
||
*pp++ = "/usr/lib";
|
||
*pp++ = "/usr/local/lib";
|
||
*pp = 0;
|
||
}
|
||
libname = name;
|
||
for (pp = l; *pp != 0 ; pp++)
|
||
{
|
||
struct direct **namelist;
|
||
int entries;
|
||
if ((entries = scandir (*pp, &namelist, libselect, libcompare)) > 0)
|
||
{
|
||
sprintf (buf, "%s/%s", *pp, namelist[entries - 1]->d_name);
|
||
add_to_list (&libraries, buf);
|
||
if (debug)
|
||
fprintf (stderr, "%s\n", buf);
|
||
break;
|
||
}
|
||
}
|
||
if (*pp == 0)
|
||
{
|
||
if (debug)
|
||
fprintf (stderr, "not found\n");
|
||
else
|
||
fatal ("dynamic dependency %s not found", name);
|
||
}
|
||
}
|
||
|
||
/* Scan the _DYNAMIC structure of the output file to find shared libraries
|
||
that it depends upon and any constructors or destructors they contain. */
|
||
|
||
static void
|
||
scan_libraries (prog_name)
|
||
char *prog_name;
|
||
{
|
||
struct exec *header;
|
||
char *base;
|
||
struct link_object *lo;
|
||
char buff[MAXPATHLEN];
|
||
struct id *list;
|
||
|
||
mapfile (prog_name);
|
||
header = (struct exec *)object;
|
||
if (N_BADMAG (*header))
|
||
fatal ("bad magic number in file '%s'", prog_name);
|
||
if (header->a_dynamic == 0)
|
||
return;
|
||
|
||
code = (char *) (N_TXTOFF (*header) + (long) header);
|
||
data = (char *) (N_DATOFF (*header) + (long) header);
|
||
symtab = (struct nlist *) (N_SYMOFF (*header) + (long) header);
|
||
|
||
if (header->a_magic == ZMAGIC && header->a_entry == 0x20)
|
||
{
|
||
/* shared object */
|
||
ld = (struct link_dynamic *) (symtab->n_value + code);
|
||
base = code;
|
||
}
|
||
else
|
||
{
|
||
/* executable */
|
||
ld = (struct link_dynamic *) data;
|
||
base = code-PAGSIZ;
|
||
}
|
||
|
||
if (debug)
|
||
fprintf (stderr, "dynamic dependencies.\n");
|
||
|
||
ld_2 = (struct link_dynamic_2 *) ((long) ld->ld_un.ld_2 + (long)base);
|
||
for (lo = (struct link_object *) ld_2->ld_need; lo;
|
||
lo = (struct link_object *) lo->lo_next)
|
||
{
|
||
char *name;
|
||
lo = (struct link_object *) ((long) lo + code);
|
||
name = (char *) (code + lo->lo_name);
|
||
if (lo->lo_library)
|
||
{
|
||
if (debug)
|
||
fprintf (stderr, "\t-l%s.%d => ", name, lo->lo_major);
|
||
sprintf (buff, "lib%s.so.%d.%d", name, lo->lo_major, lo->lo_minor);
|
||
locatelib (buff);
|
||
}
|
||
else
|
||
{
|
||
if (debug)
|
||
fprintf (stderr, "\t%s\n", name);
|
||
add_to_list (&libraries, name);
|
||
}
|
||
}
|
||
|
||
if (debug)
|
||
fprintf (stderr, "\n");
|
||
|
||
/* now iterate through the library list adding their symbols to
|
||
the list. */
|
||
for (list = libraries.first; list; list = list->next)
|
||
scan_prog_file (list->name, PASS_LIB);
|
||
}
|
||
|
||
#else /* SUNOS4_SHARED_LIBRARIES */
|
||
#ifdef LDD_SUFFIX
|
||
|
||
/* Use the List Dynamic Dependencies program to find shared libraries that
|
||
the output file depends upon and their initialization/finalization
|
||
routines, if any. */
|
||
|
||
static void
|
||
scan_libraries (prog_name)
|
||
char *prog_name;
|
||
{
|
||
static struct head libraries; /* list of shared libraries found */
|
||
struct id *list;
|
||
void (*int_handler) ();
|
||
void (*quit_handler) ();
|
||
char *ldd_argv[4];
|
||
int pid;
|
||
int argc = 0;
|
||
int pipe_fd[2];
|
||
char buf[1024];
|
||
FILE *inf;
|
||
|
||
/* If we don't have an `ldd', complain. */
|
||
if (ldd_file_name == 0)
|
||
{
|
||
error ("cannot find `ldd'");
|
||
return;
|
||
}
|
||
|
||
ldd_argv[argc++] = ldd_file_name;
|
||
ldd_argv[argc++] = prog_name;
|
||
ldd_argv[argc++] = (char *) 0;
|
||
|
||
if (pipe (pipe_fd) < 0)
|
||
fatal_perror ("pipe");
|
||
|
||
inf = fdopen (pipe_fd[0], "r");
|
||
if (inf == (FILE *) 0)
|
||
fatal_perror ("fdopen");
|
||
|
||
/* Trace if needed. */
|
||
if (vflag)
|
||
{
|
||
char **p_argv;
|
||
char *str;
|
||
|
||
for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
|
||
fprintf (stderr, " %s", str);
|
||
|
||
fprintf (stderr, "\n");
|
||
}
|
||
|
||
fflush (stdout);
|
||
fflush (stderr);
|
||
|
||
/* Spawn child ldd on pipe */
|
||
pid = vfork ();
|
||
if (pid == -1)
|
||
{
|
||
#ifdef vfork
|
||
fatal_perror ("fork");
|
||
#else
|
||
fatal_perror ("vfork");
|
||
#endif
|
||
}
|
||
|
||
if (pid == 0) /* child context */
|
||
{
|
||
/* setup stdout */
|
||
if (dup2 (pipe_fd[1], 1) < 0)
|
||
fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
|
||
|
||
if (close (pipe_fd[0]) < 0)
|
||
fatal_perror ("close (%d)", pipe_fd[0]);
|
||
|
||
if (close (pipe_fd[1]) < 0)
|
||
fatal_perror ("close (%d)", pipe_fd[1]);
|
||
|
||
execv (ldd_file_name, ldd_argv);
|
||
fatal_perror ("executing %s", ldd_file_name);
|
||
}
|
||
|
||
/* Parent context from here on. */
|
||
int_handler = (void (*) ()) signal (SIGINT, SIG_IGN);
|
||
#ifdef SIGQUIT
|
||
quit_handler = (void (*) ()) signal (SIGQUIT, SIG_IGN);
|
||
#endif
|
||
|
||
if (close (pipe_fd[1]) < 0)
|
||
fatal_perror ("close (%d)", pipe_fd[1]);
|
||
|
||
if (debug)
|
||
fprintf (stderr, "\nldd output with constructors/destructors.\n");
|
||
|
||
/* Read each line of ldd output. */
|
||
while (fgets (buf, sizeof buf, inf) != (char *) 0)
|
||
{
|
||
int ch, ch2;
|
||
char *name, *end, *p = buf;
|
||
|
||
/* Extract names of libraries and add to list. */
|
||
PARSE_LDD_OUTPUT (p);
|
||
if (p == 0)
|
||
continue;
|
||
|
||
name = p;
|
||
if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
|
||
fatal ("dynamic dependency %s not found", buf);
|
||
|
||
/* Find the end of the symbol name. */
|
||
for (end = p;
|
||
(ch2 = *end) != '\0' && ch2 != '\n' && !isspace (ch2) && ch2 != '|';
|
||
end++)
|
||
continue;
|
||
*end = '\0';
|
||
|
||
if (access (name, R_OK) == 0)
|
||
add_to_list (&libraries, name);
|
||
else
|
||
fatal ("unable to open dynamic dependency '%s'", buf);
|
||
|
||
if (debug)
|
||
fprintf (stderr, "\t%s\n", buf);
|
||
}
|
||
if (debug)
|
||
fprintf (stderr, "\n");
|
||
|
||
if (fclose (inf) != 0)
|
||
fatal_perror ("fclose of pipe");
|
||
|
||
do_wait (ldd_file_name);
|
||
|
||
signal (SIGINT, int_handler);
|
||
#ifdef SIGQUIT
|
||
signal (SIGQUIT, quit_handler);
|
||
#endif
|
||
|
||
/* now iterate through the library list adding their symbols to
|
||
the list. */
|
||
for (list = libraries.first; list; list = list->next)
|
||
scan_prog_file (list->name, PASS_LIB);
|
||
}
|
||
|
||
#endif /* LDD_SUFFIX */
|
||
#endif /* SUNOS4_SHARED_LIBRARIES */
|
||
|
||
#endif /* OBJECT_FORMAT_NONE */
|
||
|
||
|
||
/*
|
||
* COFF specific stuff.
|
||
*/
|
||
|
||
#ifdef OBJECT_FORMAT_COFF
|
||
|
||
#if defined(EXTENDED_COFF)
|
||
# define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
|
||
# define GCC_SYMENT SYMR
|
||
# define GCC_OK_SYMBOL(X) ((X).st == stProc && (X).sc == scText)
|
||
# define GCC_SYMINC(X) (1)
|
||
# define GCC_SYMZERO(X) (SYMHEADER(X).isymMax)
|
||
# define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0)
|
||
#else
|
||
# define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms)
|
||
# define GCC_SYMENT SYMENT
|
||
# define GCC_OK_SYMBOL(X) \
|
||
(((X).n_sclass == C_EXT) && \
|
||
(((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) || \
|
||
((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))
|
||
# define GCC_SYMINC(X) ((X).n_numaux+1)
|
||
# define GCC_SYMZERO(X) 0
|
||
# define GCC_CHECK_HDR(X) (1)
|
||
#endif
|
||
|
||
extern char *ldgetname ();
|
||
|
||
/* COFF version to scan the name list of the loaded program for
|
||
the symbols g++ uses for static constructors and destructors.
|
||
|
||
The constructor table begins at __CTOR_LIST__ and contains a count
|
||
of the number of pointers (or -1 if the constructors are built in a
|
||
separate section by the linker), followed by the pointers to the
|
||
constructor functions, terminated with a null pointer. The
|
||
destructor table has the same format, and begins at __DTOR_LIST__. */
|
||
|
||
static void
|
||
scan_prog_file (prog_name, which_pass)
|
||
char *prog_name;
|
||
enum pass which_pass;
|
||
{
|
||
LDFILE *ldptr = NULL;
|
||
int sym_index, sym_count;
|
||
|
||
if (which_pass != PASS_FIRST && which_pass != PASS_OBJ)
|
||
return;
|
||
|
||
if ((ldptr = ldopen (prog_name, ldptr)) == NULL)
|
||
fatal ("%s: can't open as COFF file", prog_name);
|
||
|
||
if (!MY_ISCOFF (HEADER (ldptr).f_magic))
|
||
fatal ("%s: not a COFF file", prog_name);
|
||
|
||
if (GCC_CHECK_HDR (ldptr))
|
||
{
|
||
sym_count = GCC_SYMBOLS (ldptr);
|
||
sym_index = GCC_SYMZERO (ldptr);
|
||
while (sym_index < sym_count)
|
||
{
|
||
GCC_SYMENT symbol;
|
||
|
||
if (ldtbread (ldptr, sym_index, &symbol) <= 0)
|
||
break;
|
||
sym_index += GCC_SYMINC (symbol);
|
||
|
||
if (GCC_OK_SYMBOL (symbol))
|
||
{
|
||
char *name;
|
||
|
||
if ((name = ldgetname (ldptr, &symbol)) == NULL)
|
||
continue; /* should never happen */
|
||
|
||
#ifdef XCOFF_DEBUGGING_INFO
|
||
/* All AIX function names have a duplicate entry beginning
|
||
with a dot. */
|
||
if (*name == '.')
|
||
++name;
|
||
#endif
|
||
|
||
switch (is_ctor_dtor (name))
|
||
{
|
||
case 1:
|
||
add_to_list (&constructors, name);
|
||
if (which_pass == PASS_OBJ)
|
||
add_to_list (&exports, name);
|
||
break;
|
||
|
||
case 2:
|
||
add_to_list (&destructors, name);
|
||
if (which_pass == PASS_OBJ)
|
||
add_to_list (&exports, name);
|
||
break;
|
||
|
||
default: /* not a constructor or destructor */
|
||
continue;
|
||
}
|
||
|
||
#if !defined(EXTENDED_COFF)
|
||
if (debug)
|
||
fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
|
||
symbol.n_scnum, symbol.n_sclass,
|
||
(symbol.n_type ? "0" : ""), symbol.n_type,
|
||
name);
|
||
#else
|
||
if (debug)
|
||
fprintf (stderr, "\tiss = %5d, value = %5d, index = %5d, name = %s\n",
|
||
symbol.iss, symbol.value, symbol.index, name);
|
||
#endif
|
||
}
|
||
}
|
||
}
|
||
|
||
(void) ldclose(ldptr);
|
||
}
|
||
|
||
#ifdef XCOFF_SCAN_LIBS
|
||
/* Scan imported AIX libraries for GCC static ctors and dtors.
|
||
FIXME: it is possible to link an executable without the actual import
|
||
library by using an "import file" - a text file listing symbols
|
||
exported by a library. To support this, we would have to scan
|
||
import files as well as actual shared binaries to find GCC ctors.
|
||
TODO: use memory mapping instead of 'ld' routines, files are already
|
||
memory mapped, but we could eliminate the extra in-memory copies.
|
||
Is it worth the effort? */
|
||
|
||
static void
|
||
scan_libraries (prog_name)
|
||
char *prog_name;
|
||
{
|
||
LDFILE *ldptr;
|
||
SCNHDR ldsh;
|
||
static struct path_prefix libpath; /* we should only do this once */
|
||
|
||
if ((ldptr = ldopen (prog_name, ldptr)) == NULL)
|
||
fatal ("%s: can't open as COFF file", prog_name);
|
||
|
||
if (!MY_ISCOFF (HEADER (ldptr).f_magic))
|
||
fatal ("%s: not a COFF file", prog_name);
|
||
|
||
/* find and read loader section */
|
||
if (ldnshread (ldptr, _LOADER, &ldsh))
|
||
{
|
||
LDHDR ldh;
|
||
char *impbuf;
|
||
int entry;
|
||
|
||
FSEEK (ldptr, ldsh.s_scnptr, BEGINNING);
|
||
FREAD (&ldh, sizeof (ldh), 1, ldptr);
|
||
/* read import library list */
|
||
impbuf = alloca (ldh.l_istlen);
|
||
FSEEK (ldptr, ldh.l_impoff + ldsh.s_scnptr, BEGINNING);
|
||
FREAD (impbuf, ldh.l_istlen, 1, ldptr);
|
||
|
||
if (debug)
|
||
fprintf (stderr, "LIBPATH=%s\n", impbuf);
|
||
prefix_from_string (impbuf, &libpath);
|
||
|
||
/* skip LIBPATH and empty base and member fields */
|
||
impbuf += strlen (impbuf) + 3;
|
||
for (entry = 1; entry < ldh.l_nimpid; ++entry)
|
||
{
|
||
char *impath = impbuf;
|
||
char *implib = impath + strlen (impath) + 1;
|
||
char *impmem = implib + strlen (implib) + 1;
|
||
char *soname = NULL;
|
||
char *trial;
|
||
int pathlen;
|
||
LDFILE *libptr = NULL;
|
||
struct prefix_list *pl;
|
||
ARCHDR ah;
|
||
|
||
impbuf = impmem + strlen (impmem) + 1;
|
||
if (debug)
|
||
fprintf (stderr, "PATH+BASE=%s%s\n", impath, implib);
|
||
/* Skip AIX kernel exports */
|
||
if (*impath == '/' && *(impath+1) == '\0'
|
||
&& strcmp (implib, "unix") == 0)
|
||
continue;
|
||
pathlen = strlen (impath);
|
||
trial = alloca (MAX (pathlen + 1, libpath.max_len)
|
||
+ strlen (implib) + 1);
|
||
if (*impath)
|
||
{
|
||
strcpy (trial, impath);
|
||
if (impath[pathlen - 1] != '/')
|
||
trial[pathlen++] = '/';
|
||
strcpy (trial + pathlen, implib);
|
||
if (access (trial, R_OK) == 0)
|
||
soname = trial;
|
||
}
|
||
else
|
||
for (pl = libpath.plist; pl; pl = pl->next)
|
||
{
|
||
strcpy (trial, pl->prefix);
|
||
strcat (trial, implib);
|
||
if (access (trial, R_OK) == 0)
|
||
{
|
||
soname = trial;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (! soname)
|
||
fatal ("%s: library not found", implib);
|
||
if (debug)
|
||
if (*impmem)
|
||
fprintf (stderr, "%s (%s)\n", soname, impmem);
|
||
else
|
||
fprintf (stderr, "%s\n", soname);
|
||
|
||
do
|
||
{
|
||
/* scan imported shared objects for GCC GLOBAL ctors */
|
||
short type;
|
||
if ((libptr = ldopen (soname, libptr)) == NULL)
|
||
fatal ("%s: can't open import library", soname);
|
||
if (TYPE (libptr) == ARTYPE)
|
||
{
|
||
LDFILE *memptr;
|
||
if (! *impmem)
|
||
fatal ("%s: no archive member specified", soname);
|
||
ldahread (libptr, &ah);
|
||
if (strcmp (ah.ar_name, impmem))
|
||
continue;
|
||
}
|
||
type = HEADER (libptr).f_magic;
|
||
if (HEADER (libptr).f_flags & F_SHROBJ)
|
||
{
|
||
SCNHDR soldsh;
|
||
LDHDR soldh;
|
||
long symcnt, i;
|
||
char *ldstrings;
|
||
LDSYM *lsyms;
|
||
if (!ldnshread (libptr, _LOADER, &soldsh))
|
||
fatal ("%s: not an import library", soname);
|
||
FSEEK (libptr, soldsh.s_scnptr, BEGINNING);
|
||
if (FREAD (&soldh, sizeof (soldh), 1, libptr) != 1)
|
||
fatal ("%s: can't read loader section", soname);
|
||
/*fprintf (stderr, "\tscanning %s\n", soname);*/
|
||
symcnt = soldh.l_nsyms;
|
||
lsyms = (LDSYM*) alloca (symcnt * sizeof (*lsyms));
|
||
symcnt = FREAD (lsyms, sizeof (*lsyms), symcnt, libptr);
|
||
ldstrings = alloca (soldh.l_stlen);
|
||
FSEEK (libptr, soldsh.s_scnptr+soldh.l_stoff, BEGINNING);
|
||
FREAD (ldstrings, soldh.l_stlen, 1, libptr);
|
||
for (i = 0; i < symcnt; ++i)
|
||
{
|
||
LDSYM *l = lsyms + i;
|
||
if (LDR_EXPORT (*l))
|
||
{
|
||
char *expname = 0;
|
||
if (l->l_zeroes)
|
||
expname = l->l_name;
|
||
else if (l->l_offset < soldh.l_stlen)
|
||
expname = ldstrings + l->l_offset;
|
||
switch (is_ctor_dtor (expname))
|
||
{
|
||
case 3:
|
||
if (debug)
|
||
fprintf (stderr, "\t%s\n", expname);
|
||
add_to_list (&constructors, expname);
|
||
break;
|
||
|
||
case 4:
|
||
add_to_list (&destructors, expname);
|
||
break;
|
||
|
||
default: /* not a constructor or destructor */
|
||
continue;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
else
|
||
fprintf (stderr, "%s: type = %04X flags = %04X\n",
|
||
ah.ar_name, type, HEADER (libptr).f_flags);
|
||
}
|
||
while (ldclose (libptr) == FAILURE);
|
||
/* printf (stderr, "closed %s\n", soname); */
|
||
}
|
||
}
|
||
}
|
||
#endif /* XCOFF_SCAN_LIBS */
|
||
|
||
#endif /* OBJECT_FORMAT_COFF */
|
||
|
||
|
||
/*
|
||
* OSF/rose specific stuff.
|
||
*/
|
||
|
||
#ifdef OBJECT_FORMAT_ROSE
|
||
|
||
/* Union of the various load commands */
|
||
|
||
typedef union load_union
|
||
{
|
||
ldc_header_t hdr; /* common header */
|
||
load_cmd_map_command_t map; /* map indexing other load cmds */
|
||
interpreter_command_t iprtr; /* interpreter pathname */
|
||
strings_command_t str; /* load commands strings section */
|
||
region_command_t region; /* region load command */
|
||
reloc_command_t reloc; /* relocation section */
|
||
package_command_t pkg; /* package load command */
|
||
symbols_command_t sym; /* symbol sections */
|
||
entry_command_t ent; /* program start section */
|
||
gen_info_command_t info; /* object information */
|
||
func_table_command_t func; /* function constructors/destructors */
|
||
} load_union_t;
|
||
|
||
/* Structure to point to load command and data section in memory. */
|
||
|
||
typedef struct load_all
|
||
{
|
||
load_union_t *load; /* load command */
|
||
char *section; /* pointer to section */
|
||
} load_all_t;
|
||
|
||
/* Structure to contain information about a file mapped into memory. */
|
||
|
||
struct file_info
|
||
{
|
||
char *start; /* start of map */
|
||
char *name; /* filename */
|
||
long size; /* size of the file */
|
||
long rounded_size; /* size rounded to page boundary */
|
||
int fd; /* file descriptor */
|
||
int rw; /* != 0 if opened read/write */
|
||
int use_mmap; /* != 0 if mmap'ed */
|
||
};
|
||
|
||
extern int decode_mach_o_hdr ();
|
||
extern int encode_mach_o_hdr ();
|
||
|
||
static void add_func_table PROTO((mo_header_t *, load_all_t *,
|
||
symbol_info_t *, int));
|
||
static void print_header PROTO((mo_header_t *));
|
||
static void print_load_command PROTO((load_union_t*, size_t, int));
|
||
static void bad_header PROTO((int));
|
||
static struct file_info *read_file PROTO((char *, int, int));
|
||
static void end_file PROTO((struct file_info *));
|
||
|
||
/* OSF/rose specific version to scan the name list of the loaded
|
||
program for the symbols g++ uses for static constructors and
|
||
destructors.
|
||
|
||
The constructor table begins at __CTOR_LIST__ and contains a count
|
||
of the number of pointers (or -1 if the constructors are built in a
|
||
separate section by the linker), followed by the pointers to the
|
||
constructor functions, terminated with a null pointer. The
|
||
destructor table has the same format, and begins at __DTOR_LIST__. */
|
||
|
||
static void
|
||
scan_prog_file (prog_name, which_pass)
|
||
char *prog_name;
|
||
enum pass which_pass;
|
||
{
|
||
char *obj;
|
||
mo_header_t hdr;
|
||
load_all_t *load_array;
|
||
load_all_t *load_end;
|
||
load_all_t *load_cmd;
|
||
int symbol_load_cmds;
|
||
off_t offset;
|
||
int i;
|
||
int num_syms;
|
||
int status;
|
||
char *str_sect;
|
||
struct file_info *obj_file;
|
||
int prog_fd;
|
||
mo_lcid_t cmd_strings = -1;
|
||
symbol_info_t *main_sym = 0;
|
||
int rw = (which_pass != PASS_FIRST);
|
||
|
||
prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
|
||
if (prog_fd < 0)
|
||
fatal_perror ("can't read %s", prog_name);
|
||
|
||
obj_file = read_file (prog_name, prog_fd, rw);
|
||
obj = obj_file->start;
|
||
|
||
status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
|
||
if (status != MO_HDR_CONV_SUCCESS)
|
||
bad_header (status);
|
||
|
||
|
||
/* Do some basic sanity checks. Note we explicitly use the big endian magic number,
|
||
since the hardware will automatically swap bytes for us on loading little endian
|
||
integers. */
|
||
|
||
#ifndef CROSS_COMPILE
|
||
if (hdr.moh_magic != MOH_MAGIC_MSB
|
||
|| hdr.moh_header_version != MOH_HEADER_VERSION
|
||
|| hdr.moh_byte_order != OUR_BYTE_ORDER
|
||
|| hdr.moh_data_rep_id != OUR_DATA_REP_ID
|
||
|| hdr.moh_cpu_type != OUR_CPU_TYPE
|
||
|| hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
|
||
|| hdr.moh_vendor_type != OUR_VENDOR_TYPE)
|
||
{
|
||
fatal ("incompatibilities between object file & expected values");
|
||
}
|
||
#endif
|
||
|
||
if (debug)
|
||
print_header (&hdr);
|
||
|
||
offset = hdr.moh_first_cmd_off;
|
||
load_end = load_array
|
||
= (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
|
||
|
||
/* Build array of load commands, calculating the offsets */
|
||
for (i = 0; i < hdr.moh_n_load_cmds; i++)
|
||
{
|
||
load_union_t *load_hdr; /* load command header */
|
||
|
||
load_cmd = load_end++;
|
||
load_hdr = (load_union_t *) (obj + offset);
|
||
|
||
/* If modifying the program file, copy the header. */
|
||
if (rw)
|
||
{
|
||
load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
|
||
bcopy ((char *)load_hdr, (char *)ptr, load_hdr->hdr.ldci_cmd_size);
|
||
load_hdr = ptr;
|
||
|
||
/* null out old command map, because we will rewrite at the end. */
|
||
if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
|
||
{
|
||
cmd_strings = ptr->map.lcm_ld_cmd_strings;
|
||
ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
|
||
}
|
||
}
|
||
|
||
load_cmd->load = load_hdr;
|
||
if (load_hdr->hdr.ldci_section_off > 0)
|
||
load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
|
||
|
||
if (debug)
|
||
print_load_command (load_hdr, offset, i);
|
||
|
||
offset += load_hdr->hdr.ldci_cmd_size;
|
||
}
|
||
|
||
/* If the last command is the load command map and is not undefined,
|
||
decrement the count of load commands. */
|
||
if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
|
||
{
|
||
load_end--;
|
||
hdr.moh_n_load_cmds--;
|
||
}
|
||
|
||
/* Go through and process each symbol table section. */
|
||
symbol_load_cmds = 0;
|
||
for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
|
||
{
|
||
load_union_t *load_hdr = load_cmd->load;
|
||
|
||
if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
|
||
{
|
||
symbol_load_cmds++;
|
||
|
||
if (debug)
|
||
{
|
||
char *kind = "unknown";
|
||
|
||
switch (load_hdr->sym.symc_kind)
|
||
{
|
||
case SYMC_IMPORTS: kind = "imports"; break;
|
||
case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
|
||
case SYMC_STABS: kind = "stabs"; break;
|
||
}
|
||
|
||
fprintf (stderr, "\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
|
||
symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
|
||
}
|
||
|
||
if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
|
||
continue;
|
||
|
||
str_sect = load_array[load_hdr->sym.symc_strings_section].section;
|
||
if (str_sect == (char *)0)
|
||
fatal ("string section missing");
|
||
|
||
if (load_cmd->section == (char *)0)
|
||
fatal ("section pointer missing");
|
||
|
||
num_syms = load_hdr->sym.symc_nentries;
|
||
for (i = 0; i < num_syms; i++)
|
||
{
|
||
symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
|
||
char *name = sym->si_name.symbol_name + str_sect;
|
||
|
||
if (name[0] != '_')
|
||
continue;
|
||
|
||
if (rw)
|
||
{
|
||
char *n = name + strlen (name) - strlen (NAME__MAIN);
|
||
|
||
if ((n - name) < 0 || strcmp (n, NAME__MAIN))
|
||
continue;
|
||
while (n != name)
|
||
if (*--n != '_')
|
||
continue;
|
||
|
||
main_sym = sym;
|
||
}
|
||
else
|
||
{
|
||
switch (is_ctor_dtor (name))
|
||
{
|
||
case 1:
|
||
add_to_list (&constructors, name);
|
||
break;
|
||
|
||
case 2:
|
||
add_to_list (&destructors, name);
|
||
break;
|
||
|
||
default: /* not a constructor or destructor */
|
||
continue;
|
||
}
|
||
}
|
||
|
||
if (debug)
|
||
fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
|
||
sym->si_type, sym->si_sc_type, sym->si_flags, name);
|
||
}
|
||
}
|
||
}
|
||
|
||
if (symbol_load_cmds == 0)
|
||
fatal ("no symbol table found");
|
||
|
||
/* Update the program file now, rewrite header and load commands. At present,
|
||
we assume that there is enough space after the last load command to insert
|
||
one more. Since the first section written out is page aligned, and the
|
||
number of load commands is small, this is ok for the present. */
|
||
|
||
if (rw)
|
||
{
|
||
load_union_t *load_map;
|
||
size_t size;
|
||
|
||
if (cmd_strings == -1)
|
||
fatal ("no cmd_strings found");
|
||
|
||
/* Add __main to initializer list.
|
||
If we are building a program instead of a shared library, don't
|
||
do anything, since in the current version, you cannot do mallocs
|
||
and such in the constructors. */
|
||
|
||
if (main_sym != (symbol_info_t *)0
|
||
&& ((hdr.moh_flags & MOH_EXECABLE_F) == 0))
|
||
add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
|
||
|
||
if (debug)
|
||
fprintf (stderr, "\nUpdating header and load commands.\n\n");
|
||
|
||
hdr.moh_n_load_cmds++;
|
||
size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
|
||
|
||
/* Create new load command map. */
|
||
if (debug)
|
||
fprintf (stderr, "load command map, %d cmds, new size %ld.\n",
|
||
(int)hdr.moh_n_load_cmds, (long)size);
|
||
|
||
load_map = (load_union_t *) xcalloc (1, size);
|
||
load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
|
||
load_map->map.ldc_header.ldci_cmd_size = size;
|
||
load_map->map.lcm_ld_cmd_strings = cmd_strings;
|
||
load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
|
||
load_array[hdr.moh_n_load_cmds-1].load = load_map;
|
||
|
||
offset = hdr.moh_first_cmd_off;
|
||
for (i = 0; i < hdr.moh_n_load_cmds; i++)
|
||
{
|
||
load_map->map.lcm_map[i] = offset;
|
||
if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
|
||
hdr.moh_load_map_cmd_off = offset;
|
||
|
||
offset += load_array[i].load->hdr.ldci_cmd_size;
|
||
}
|
||
|
||
hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
|
||
|
||
if (debug)
|
||
print_header (&hdr);
|
||
|
||
/* Write header */
|
||
status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
|
||
if (status != MO_HDR_CONV_SUCCESS)
|
||
bad_header (status);
|
||
|
||
if (debug)
|
||
fprintf (stderr, "writing load commands.\n\n");
|
||
|
||
/* Write load commands */
|
||
offset = hdr.moh_first_cmd_off;
|
||
for (i = 0; i < hdr.moh_n_load_cmds; i++)
|
||
{
|
||
load_union_t *load_hdr = load_array[i].load;
|
||
size_t size = load_hdr->hdr.ldci_cmd_size;
|
||
|
||
if (debug)
|
||
print_load_command (load_hdr, offset, i);
|
||
|
||
bcopy ((char *)load_hdr, (char *)(obj + offset), size);
|
||
offset += size;
|
||
}
|
||
}
|
||
|
||
end_file (obj_file);
|
||
|
||
if (close (prog_fd))
|
||
fatal_perror ("closing %s", prog_name);
|
||
|
||
if (debug)
|
||
fprintf (stderr, "\n");
|
||
}
|
||
|
||
|
||
/* Add a function table to the load commands to call a function
|
||
on initiation or termination of the process. */
|
||
|
||
static void
|
||
add_func_table (hdr_p, load_array, sym, type)
|
||
mo_header_t *hdr_p; /* pointer to global header */
|
||
load_all_t *load_array; /* array of ptrs to load cmds */
|
||
symbol_info_t *sym; /* pointer to symbol entry */
|
||
int type; /* fntc_type value */
|
||
{
|
||
/* Add a new load command. */
|
||
int num_cmds = ++hdr_p->moh_n_load_cmds;
|
||
int load_index = num_cmds - 1;
|
||
size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
|
||
load_union_t *ptr = xcalloc (1, size);
|
||
load_all_t *load_cmd;
|
||
int i;
|
||
|
||
/* Set the unresolved address bit in the header to force the loader to be
|
||
used, since kernel exec does not call the initialization functions. */
|
||
hdr_p->moh_flags |= MOH_UNRESOLVED_F;
|
||
|
||
load_cmd = &load_array[load_index];
|
||
load_cmd->load = ptr;
|
||
load_cmd->section = (char *)0;
|
||
|
||
/* Fill in func table load command. */
|
||
ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
|
||
ptr->func.ldc_header.ldci_cmd_size = size;
|
||
ptr->func.ldc_header.ldci_section_off = 0;
|
||
ptr->func.ldc_header.ldci_section_len = 0;
|
||
ptr->func.fntc_type = type;
|
||
ptr->func.fntc_nentries = 1;
|
||
|
||
/* copy address, turn it from abs. address to (region,offset) if necessary. */
|
||
/* Is the symbol already expressed as (region, offset)? */
|
||
if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
|
||
{
|
||
ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
|
||
ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
|
||
}
|
||
|
||
/* If not, figure out which region it's in. */
|
||
else
|
||
{
|
||
mo_vm_addr_t addr = sym->si_value.abs_val;
|
||
int found = 0;
|
||
|
||
for (i = 0; i < load_index; i++)
|
||
{
|
||
if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
|
||
{
|
||
region_command_t *region_ptr = &load_array[i].load->region;
|
||
|
||
if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
|
||
&& addr >= region_ptr->regc_addr.vm_addr
|
||
&& addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
|
||
{
|
||
ptr->func.fntc_entry_loc[0].adr_lcid = i;
|
||
ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
|
||
found++;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!found)
|
||
fatal ("could not convert 0x%l.8x into a region", addr);
|
||
}
|
||
|
||
if (debug)
|
||
fprintf (stderr,
|
||
"%s function, region %d, offset = %ld (0x%.8lx)\n",
|
||
(type == FNTC_INITIALIZATION) ? "init" : "term",
|
||
(int)ptr->func.fntc_entry_loc[i].adr_lcid,
|
||
(long)ptr->func.fntc_entry_loc[i].adr_sctoff,
|
||
(long)ptr->func.fntc_entry_loc[i].adr_sctoff);
|
||
|
||
}
|
||
|
||
|
||
/* Print the global header for an OSF/rose object. */
|
||
|
||
static void
|
||
print_header (hdr_ptr)
|
||
mo_header_t *hdr_ptr;
|
||
{
|
||
fprintf (stderr, "\nglobal header:\n");
|
||
fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic);
|
||
fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version);
|
||
fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version);
|
||
fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version);
|
||
fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size);
|
||
fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order);
|
||
fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id);
|
||
fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type);
|
||
fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype);
|
||
fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type);
|
||
fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
|
||
fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off);
|
||
fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds);
|
||
fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds);
|
||
fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags);
|
||
|
||
if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
|
||
fprintf (stderr, ", relocatable");
|
||
|
||
if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
|
||
fprintf (stderr, ", linkable");
|
||
|
||
if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
|
||
fprintf (stderr, ", execable");
|
||
|
||
if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
|
||
fprintf (stderr, ", executable");
|
||
|
||
if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
|
||
fprintf (stderr, ", unresolved");
|
||
|
||
fprintf (stderr, "\n\n");
|
||
return;
|
||
}
|
||
|
||
|
||
/* Print a short summary of a load command. */
|
||
|
||
static void
|
||
print_load_command (load_hdr, offset, number)
|
||
load_union_t *load_hdr;
|
||
size_t offset;
|
||
int number;
|
||
{
|
||
mo_long_t type = load_hdr->hdr.ldci_cmd_type;
|
||
char *type_str = (char *)0;
|
||
|
||
switch (type)
|
||
{
|
||
case LDC_UNDEFINED: type_str = "UNDEFINED"; break;
|
||
case LDC_CMD_MAP: type_str = "CMD_MAP"; break;
|
||
case LDC_INTERPRETER: type_str = "INTERPRETER"; break;
|
||
case LDC_STRINGS: type_str = "STRINGS"; break;
|
||
case LDC_REGION: type_str = "REGION"; break;
|
||
case LDC_RELOC: type_str = "RELOC"; break;
|
||
case LDC_PACKAGE: type_str = "PACKAGE"; break;
|
||
case LDC_SYMBOLS: type_str = "SYMBOLS"; break;
|
||
case LDC_ENTRY: type_str = "ENTRY"; break;
|
||
case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break;
|
||
case LDC_GEN_INFO: type_str = "GEN_INFO"; break;
|
||
}
|
||
|
||
fprintf (stderr,
|
||
"cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
|
||
number,
|
||
(long) load_hdr->hdr.ldci_cmd_size,
|
||
(long) offset,
|
||
(long) load_hdr->hdr.ldci_section_off,
|
||
(long) load_hdr->hdr.ldci_section_len);
|
||
|
||
if (type_str == (char *)0)
|
||
fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
|
||
|
||
else if (type != LDC_REGION)
|
||
fprintf (stderr, ", ty: %s\n", type_str);
|
||
|
||
else
|
||
{
|
||
char *region = "";
|
||
switch (load_hdr->region.regc_usage_type)
|
||
{
|
||
case REG_TEXT_T: region = ", .text"; break;
|
||
case REG_DATA_T: region = ", .data"; break;
|
||
case REG_BSS_T: region = ", .bss"; break;
|
||
case REG_GLUE_T: region = ", .glue"; break;
|
||
#if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
|
||
case REG_RDATA_T: region = ", .rdata"; break;
|
||
case REG_SDATA_T: region = ", .sdata"; break;
|
||
case REG_SBSS_T: region = ", .sbss"; break;
|
||
#endif
|
||
}
|
||
|
||
fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
|
||
type_str,
|
||
(long) load_hdr->region.regc_vm_addr,
|
||
(long) load_hdr->region.regc_vm_size,
|
||
region);
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
|
||
/* Fatal error when {en,de}code_mach_o_header fails. */
|
||
|
||
static void
|
||
bad_header (status)
|
||
int status;
|
||
{
|
||
char *msg = (char *)0;
|
||
|
||
switch (status)
|
||
{
|
||
case MO_ERROR_BAD_MAGIC: msg = "bad magic number"; break;
|
||
case MO_ERROR_BAD_HDR_VERS: msg = "bad header version"; break;
|
||
case MO_ERROR_BAD_RAW_HDR_VERS: msg = "bad raw header version"; break;
|
||
case MO_ERROR_BUF2SML: msg = "raw header buffer too small"; break;
|
||
case MO_ERROR_OLD_RAW_HDR_FILE: msg = "old raw header file"; break;
|
||
case MO_ERROR_UNSUPPORTED_VERS: msg = "unsupported version"; break;
|
||
}
|
||
|
||
if (msg == (char *)0)
|
||
fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
|
||
else
|
||
fatal ("%s", msg);
|
||
}
|
||
|
||
|
||
/* Read a file into a memory buffer. */
|
||
|
||
static struct file_info *
|
||
read_file (name, fd, rw)
|
||
char *name; /* filename */
|
||
int fd; /* file descriptor */
|
||
int rw; /* read/write */
|
||
{
|
||
struct stat stat_pkt;
|
||
struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
|
||
#ifdef USE_MMAP
|
||
static int page_size;
|
||
#endif
|
||
|
||
if (fstat (fd, &stat_pkt) < 0)
|
||
fatal_perror ("fstat %s", name);
|
||
|
||
p->name = name;
|
||
p->size = stat_pkt.st_size;
|
||
p->rounded_size = stat_pkt.st_size;
|
||
p->fd = fd;
|
||
p->rw = rw;
|
||
|
||
#ifdef USE_MMAP
|
||
if (debug)
|
||
fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
|
||
|
||
if (page_size == 0)
|
||
page_size = sysconf (_SC_PAGE_SIZE);
|
||
|
||
p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
|
||
p->start = mmap ((caddr_t)0,
|
||
(rw) ? p->rounded_size : p->size,
|
||
(rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
|
||
MAP_FILE | MAP_VARIABLE | MAP_SHARED,
|
||
fd,
|
||
0L);
|
||
|
||
if (p->start != (char *)0 && p->start != (char *)-1)
|
||
p->use_mmap = 1;
|
||
|
||
else
|
||
#endif /* USE_MMAP */
|
||
{
|
||
long len;
|
||
|
||
if (debug)
|
||
fprintf (stderr, "read %s\n", name);
|
||
|
||
p->use_mmap = 0;
|
||
p->start = xmalloc (p->size);
|
||
if (lseek (fd, 0L, SEEK_SET) < 0)
|
||
fatal_perror ("lseek to 0 on %s", name);
|
||
|
||
len = read (fd, p->start, p->size);
|
||
if (len < 0)
|
||
fatal_perror ("read %s", name);
|
||
|
||
if (len != p->size)
|
||
fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
|
||
}
|
||
|
||
return p;
|
||
}
|
||
|
||
/* Do anything necessary to write a file back from memory. */
|
||
|
||
static void
|
||
end_file (ptr)
|
||
struct file_info *ptr; /* file information block */
|
||
{
|
||
#ifdef USE_MMAP
|
||
if (ptr->use_mmap)
|
||
{
|
||
if (ptr->rw)
|
||
{
|
||
if (debug)
|
||
fprintf (stderr, "msync %s\n", ptr->name);
|
||
|
||
if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
|
||
fatal_perror ("msync %s", ptr->name);
|
||
}
|
||
|
||
if (debug)
|
||
fprintf (stderr, "munmap %s\n", ptr->name);
|
||
|
||
if (munmap (ptr->start, ptr->size))
|
||
fatal_perror ("munmap %s", ptr->name);
|
||
}
|
||
else
|
||
#endif /* USE_MMAP */
|
||
{
|
||
if (ptr->rw)
|
||
{
|
||
long len;
|
||
|
||
if (debug)
|
||
fprintf (stderr, "write %s\n", ptr->name);
|
||
|
||
if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
|
||
fatal_perror ("lseek to 0 on %s", ptr->name);
|
||
|
||
len = write (ptr->fd, ptr->start, ptr->size);
|
||
if (len < 0)
|
||
fatal_perror ("write %s", ptr->name);
|
||
|
||
if (len != ptr->size)
|
||
fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
|
||
}
|
||
|
||
free (ptr->start);
|
||
}
|
||
|
||
free (ptr);
|
||
}
|
||
|
||
#endif /* OBJECT_FORMAT_ROSE */
|