1389 lines
35 KiB
Text
1389 lines
35 KiB
Text
# This shell script emits a C file. -*- C -*-
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# It does some substitutions.
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if [ -z "$MACHINE" ]; then
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OUTPUT_ARCH=${ARCH}
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else
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OUTPUT_ARCH=${ARCH}:${MACHINE}
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fi
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cat >e${EMULATION_NAME}.c <<EOF
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/* This file is is generated by a shell script. DO NOT EDIT! */
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/* AIX emulation code for ${EMULATION_NAME}
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Copyright 1991, 1993, 1995, 1996, 1997, 1998, 2000, 2001, 2002
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Free Software Foundation, Inc.
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Written by Steve Chamberlain <sac@cygnus.com>
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AIX support by Ian Lance Taylor <ian@cygnus.com>
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AIX 64 bit support by Tom Rix <trix@redhat.com>
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This file is part of GLD, the Gnu Linker.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#define TARGET_IS_${EMULATION_NAME}
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#include "bfd.h"
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#include "sysdep.h"
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#include "libiberty.h"
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#include "safe-ctype.h"
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#include "getopt.h"
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#include "obstack.h"
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#include "bfdlink.h"
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#include "ld.h"
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#include "ldmain.h"
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#include "ldmisc.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include "ldfile.h"
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#include "ldemul.h"
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#include "ldctor.h"
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#include "ldgram.h"
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#include "coff/internal.h"
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#include "coff/xcoff.h"
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#include "libcoff.h"
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#include "libxcoff.h"
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static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
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static int gld${EMULATION_NAME}_parse_args PARAMS ((int, char **));
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static void gld${EMULATION_NAME}_after_open PARAMS ((void));
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static char *gld${EMULATION_NAME}_choose_target PARAMS ((int, char **));
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static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
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static void gld${EMULATION_NAME}_read_file PARAMS ((const char *, boolean));
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static void gld${EMULATION_NAME}_free PARAMS ((PTR));
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static void gld${EMULATION_NAME}_find_relocs
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PARAMS ((lang_statement_union_type *));
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static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *));
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static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));
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static boolean gld${EMULATION_NAME}_unrecognized_file
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PARAMS ((lang_input_statement_type *));
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static void gld${EMULATION_NAME}_create_output_section_statements
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PARAMS ((void));
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static void gld${EMULATION_NAME}_set_output_arch PARAMS ((void));
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static int is_syscall PARAMS ((char *, unsigned int *));
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static int change_symbol_mode PARAMS ((char *));
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/* The file alignment required for each section. */
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static unsigned long file_align;
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/* The maximum size the stack is permitted to grow. This is stored in
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the a.out header. */
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static unsigned long maxstack;
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/* The maximum data size. This is stored in the a.out header. */
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static unsigned long maxdata;
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/* Whether to perform garbage collection. */
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static int gc = 1;
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/* The module type to use. */
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static unsigned short modtype = ('1' << 8) | 'L';
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/* Whether the .text section must be read-only (i.e., no relocs
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permitted). */
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static int textro;
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/* Whether to implement Unix like linker semantics. */
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static int unix_ld;
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/* Structure used to hold import file list. */
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struct filelist
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{
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struct filelist *next;
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const char *name;
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};
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/* List of import files. */
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static struct filelist *import_files;
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/* List of export symbols read from the export files. */
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struct export_symbol_list
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{
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struct export_symbol_list *next;
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const char *name;
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};
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static struct export_symbol_list *export_symbols;
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/* Maintains the 32 or 64 bit mode state of import file */
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static unsigned int symbol_mode = 0x04;
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/* Which symbol modes are valid */
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static unsigned int symbol_mode_mask = 0x0d;
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/* Whether this is a 64 bit link */
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static int is_64bit = 0;
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/* Which syscalls from import file are valid */
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static unsigned int syscall_mask = 0x77;
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/* fake file for -binitfini support */
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static lang_input_statement_type *initfini_file;
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/* Whether to do run time linking
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-brtl enables, -bnortl and -bnortllib disable. */
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static int rtld;
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/* Explicit command line library path, -blibpath */
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static char *command_line_blibpath = NULL;
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/* This routine is called before anything else is done. */
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static void
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gld${EMULATION_NAME}_before_parse ()
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{
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const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}");
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if (arch)
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{
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ldfile_output_architecture = arch->arch;
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ldfile_output_machine = arch->mach;
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ldfile_output_machine_name = arch->printable_name;
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}
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else
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ldfile_output_architecture = bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`;
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config.has_shared = true;
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/* The link_info.[init|fini]_functions are initialized in ld/lexsup.c.
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Override them here so we can use the link_info.init_function as a
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state flag that lets the backend know that -binitfini has been done. */
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link_info.init_function = NULL;
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link_info.fini_function = NULL;
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}
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/* Handle AIX specific options. */
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static int
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gld${EMULATION_NAME}_parse_args (argc, argv)
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int argc;
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char **argv;
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{
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int prevoptind = optind;
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int prevopterr = opterr;
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int indx;
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int longind;
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int optc;
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bfd_signed_vma val;
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char *end;
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enum
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{
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OPTION_IGNORE = 300,
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OPTION_AUTOIMP,
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OPTION_ERNOTOK,
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OPTION_EROK,
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OPTION_EXPORT,
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OPTION_IMPORT,
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OPTION_INITFINI,
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OPTION_LOADMAP,
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OPTION_MAXDATA,
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OPTION_MAXSTACK,
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OPTION_MODTYPE,
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OPTION_NOAUTOIMP,
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OPTION_NOSTRCMPCT,
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OPTION_PD,
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OPTION_PT,
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OPTION_STRCMPCT,
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OPTION_UNIX,
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OPTION_32,
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OPTION_64,
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OPTION_LIBPATH,
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OPTION_NOLIBPATH,
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};
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/* -binitfini has special handling in the linker backend. The native linker
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uses the arguemnts to generate a table of init and fini functions for
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the executable. The important use for this option is to support aix 4.2+
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c++ constructors and destructors. This is tied into gcc via collect2.c.
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The function table is accessed by the runtime linker/loader by checking if
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the first symbol in the loader symbol table is __rtinit. The gnu linker
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generates this symbol and makes it the first loader symbol. */
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static const struct option longopts[] = {
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{"basis", no_argument, NULL, OPTION_IGNORE},
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{"bautoimp", no_argument, NULL, OPTION_AUTOIMP},
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{"bcomprld", no_argument, NULL, OPTION_IGNORE},
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{"bcrld", no_argument, NULL, OPTION_IGNORE},
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{"bcror31", no_argument, NULL, OPTION_IGNORE},
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{"bD", required_argument, NULL, OPTION_MAXDATA},
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{"bE", required_argument, NULL, OPTION_EXPORT},
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{"bernotok", no_argument, NULL, OPTION_ERNOTOK},
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{"berok", no_argument, NULL, OPTION_EROK},
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{"berrmsg", no_argument, NULL, OPTION_IGNORE},
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{"bexport", required_argument, NULL, OPTION_EXPORT},
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{"bf", no_argument, NULL, OPTION_ERNOTOK},
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{"bgc", no_argument, &gc, 1},
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{"bh", required_argument, NULL, OPTION_IGNORE},
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{"bhalt", required_argument, NULL, OPTION_IGNORE},
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{"bI", required_argument, NULL, OPTION_IMPORT},
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{"bimport", required_argument, NULL, OPTION_IMPORT},
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{"binitfini", required_argument, NULL, OPTION_INITFINI},
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{"bl", required_argument, NULL, OPTION_LOADMAP},
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{"bloadmap", required_argument, NULL, OPTION_LOADMAP},
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{"bmaxdata", required_argument, NULL, OPTION_MAXDATA},
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{"bmaxstack", required_argument, NULL, OPTION_MAXSTACK},
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{"bM", required_argument, NULL, OPTION_MODTYPE},
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{"bmodtype", required_argument, NULL, OPTION_MODTYPE},
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{"bnoautoimp", no_argument, NULL, OPTION_NOAUTOIMP},
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{"bnodelcsect", no_argument, NULL, OPTION_IGNORE},
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{"bnoentry", no_argument, NULL, OPTION_IGNORE},
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{"bnogc", no_argument, &gc, 0},
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{"bnso", no_argument, NULL, OPTION_NOAUTOIMP},
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{"bnostrcmpct", no_argument, NULL, OPTION_NOSTRCMPCT},
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{"bnotextro", no_argument, &textro, 0},
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{"bnro", no_argument, &textro, 0},
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{"bpD", required_argument, NULL, OPTION_PD},
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{"bpT", required_argument, NULL, OPTION_PT},
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{"bro", no_argument, &textro, 1},
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{"brtl", no_argument, &rtld, 1},
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{"bnortl", no_argument, &rtld, 0},
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{"bnortllib", no_argument, &rtld, 0},
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{"bS", required_argument, NULL, OPTION_MAXSTACK},
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{"bso", no_argument, NULL, OPTION_AUTOIMP},
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{"bstrcmpct", no_argument, NULL, OPTION_STRCMPCT},
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{"btextro", no_argument, &textro, 1},
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{"b32", no_argument, NULL, OPTION_32},
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{"b64", no_argument, NULL, OPTION_64},
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{"static", no_argument, NULL, OPTION_NOAUTOIMP},
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{"unix", no_argument, NULL, OPTION_UNIX},
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{"blibpath", required_argument, NULL, OPTION_LIBPATH},
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{"bnolibpath", required_argument, NULL, OPTION_NOLIBPATH},
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{NULL, no_argument, NULL, 0}
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};
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/* Options supported by the AIX linker which we do not support: -f,
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-S, -v, -Z, -bbindcmds, -bbinder, -bbindopts, -bcalls, -bcaps,
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-bcror15, -bdebugopt, -bdbg, -bdelcsect, -bex?, -bfilelist, -bfl,
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-bgcbypass, -bglink, -binsert, -bi, -bloadmap, -bl, -bmap, -bnl,
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-bnobind, -bnocomprld, -bnocrld, -bnoerrmsg, -bnoglink,
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-bnoloadmap, -bnl, -bnoobjreorder, -bnoquiet, -bnoreorder,
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-bnotypchk, -bnox, -bquiet, -bR, -brename, -breorder, -btypchk,
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-bx, -bX, -bxref. */
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/* If the current option starts with -b, change the first : to an =.
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The AIX linker uses : to separate the option from the argument;
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changing it to = lets us treat it as a getopt option. */
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indx = optind;
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if (indx == 0)
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indx = 1;
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if (indx < argc && strncmp (argv[indx], "-b", 2) == 0)
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{
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char *s;
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for (s = argv[indx]; *s != '\0'; s++)
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{
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if (*s == ':')
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{
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*s = '=';
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break;
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}
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}
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}
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/* We add s and u so to the short options list so that -s and -u on
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the command line do not match -static and -unix. */
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opterr = 0;
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optc = getopt_long_only (argc, argv, "-D:H:KT:zsu", longopts, &longind);
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opterr = prevopterr;
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switch (optc)
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{
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case 's':
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case 'u':
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default:
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optind = prevoptind;
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return 0;
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case 0:
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/* Long option which just sets a flag. */
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break;
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case 'D':
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val = strtoll (optarg, &end, 0);
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if (*end != '\0')
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einfo ("%P: warning: ignoring invalid -D number %s\n", optarg);
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else if (val != -1)
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lang_section_start (".data", exp_intop (val));
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break;
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case 'H':
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val = strtoul (optarg, &end, 0);
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if (*end != '\0' || (val & (val - 1)) != 0)
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einfo ("%P: warning: ignoring invalid -H number %s\n", optarg);
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else
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file_align = val;
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break;
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case 'K':
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case 'z':
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/* FIXME: This should use the page size for the target system. */
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file_align = 4096;
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break;
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case 'T':
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/* On AIX this is the same as GNU ld -Ttext. When we see -T
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number, we assume the AIX option is intended. Otherwise, we
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assume the usual GNU ld -T option is intended. We can't just
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ignore the AIX option, because gcc passes it to the linker. */
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val = strtoull (optarg, &end, 0);
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if (*end != '\0')
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{
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optind = prevoptind;
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return 0;
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}
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lang_section_start (".text", exp_intop (val));
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break;
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case OPTION_IGNORE:
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break;
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case OPTION_INITFINI:
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{
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/*
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* The aix linker init fini has the format :
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*
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* -binitfini:[ Initial][:Termination][:Priority]
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*
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* it allows the Termination and Priority to be optional.
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*
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* Since we support only one init/fini pair, we ignore the Priority.
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*
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* Define the special symbol __rtinit.
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*
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* strtok does not correctly handle the case of -binitfini::fini: so
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* do it by hand
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*/
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char *t, *i, *f;
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i = t = optarg;
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while (*t && ':' != *t)
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t++;
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if (*t)
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*t++ = 0;
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if (0 != strlen (i))
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link_info.init_function = i;
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f = t;
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while (*t && ':' != *t)
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t++;
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*t = 0;
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if (0 != strlen (f))
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link_info.fini_function = f;
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}
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break;
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case OPTION_AUTOIMP:
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link_info.static_link = false;
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break;
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|
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case OPTION_ERNOTOK:
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|
force_make_executable = false;
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|
break;
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|
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|
case OPTION_EROK:
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force_make_executable = true;
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|
break;
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|
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|
case OPTION_EXPORT:
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gld${EMULATION_NAME}_read_file (optarg, false);
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break;
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case OPTION_IMPORT:
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{
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struct filelist *n;
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struct filelist **flpp;
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n = (struct filelist *) xmalloc (sizeof (struct filelist));
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n->next = NULL;
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n->name = optarg;
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flpp = &import_files;
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while (*flpp != NULL)
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|
flpp = &(*flpp)->next;
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*flpp = n;
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}
|
|
break;
|
|
|
|
case OPTION_LOADMAP:
|
|
config.map_filename = optarg;
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|
break;
|
|
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|
case OPTION_MAXDATA:
|
|
val = strtoull (optarg, &end, 0);
|
|
if (*end != '\0')
|
|
einfo ("%P: warning: ignoring invalid -bmaxdata number %s\n", optarg);
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else
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maxdata = val;
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|
break;
|
|
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|
case OPTION_MAXSTACK:
|
|
val = strtoull (optarg, &end, 0);
|
|
if (*end != '\0')
|
|
einfo ("%P: warning: ignoring invalid -bmaxstack number %s\n",
|
|
optarg);
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|
else
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|
maxstack = val;
|
|
break;
|
|
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case OPTION_MODTYPE:
|
|
if (*optarg == 'S')
|
|
{
|
|
link_info.shared = true;
|
|
++optarg;
|
|
}
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|
if (*optarg == '\0' || optarg[1] == '\0')
|
|
einfo ("%P: warning: ignoring invalid module type %s\n", optarg);
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|
else
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|
modtype = (*optarg << 8) | optarg[1];
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|
break;
|
|
|
|
case OPTION_NOAUTOIMP:
|
|
link_info.static_link = true;
|
|
break;
|
|
|
|
case OPTION_NOSTRCMPCT:
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|
link_info.traditional_format = true;
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|
break;
|
|
|
|
case OPTION_PD:
|
|
/* This sets the page that the .data section is supposed to
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|
start on. The offset within the page should still be the
|
|
offset within the file, so we need to build an appropriate
|
|
expression. */
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|
val = strtoull (optarg, &end, 0);
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if (*end != '\0')
|
|
einfo ("%P: warning: ignoring invalid -pD number %s\n", optarg);
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|
else
|
|
{
|
|
etree_type *t;
|
|
|
|
t = exp_binop ('+',
|
|
exp_intop (val),
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|
exp_binop ('&',
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|
exp_nameop (NAME, "."),
|
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exp_intop (0xfff)));
|
|
t = exp_binop ('&',
|
|
exp_binop ('+', t, exp_intop (31)),
|
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exp_intop (~(bfd_vma) 31));
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lang_section_start (".data", t);
|
|
}
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|
break;
|
|
|
|
case OPTION_PT:
|
|
/* This set the page that the .text section is supposed to start
|
|
on. The offset within the page should still be the offset
|
|
within the file. */
|
|
val = strtoull (optarg, &end, 0);
|
|
if (*end != '\0')
|
|
einfo ("%P: warning: ignoring invalid -pT number %s\n", optarg);
|
|
else
|
|
{
|
|
etree_type *t;
|
|
|
|
t = exp_binop ('+',
|
|
exp_intop (val),
|
|
exp_nameop (SIZEOF_HEADERS, NULL));
|
|
t = exp_binop ('&',
|
|
exp_binop ('+', t, exp_intop (31)),
|
|
exp_intop (~(bfd_vma) 31));
|
|
lang_section_start (".text", t);
|
|
}
|
|
break;
|
|
|
|
case OPTION_STRCMPCT:
|
|
link_info.traditional_format = false;
|
|
break;
|
|
|
|
case OPTION_UNIX:
|
|
unix_ld = true;
|
|
break;
|
|
|
|
case OPTION_32:
|
|
is_64bit = 0;
|
|
syscall_mask = 0x77;
|
|
symbol_mode_mask = 0x0d;
|
|
break;
|
|
|
|
case OPTION_64:
|
|
is_64bit = 1;
|
|
syscall_mask = 0xcc;
|
|
symbol_mode_mask = 0x0e;
|
|
break;
|
|
|
|
case OPTION_LIBPATH:
|
|
command_line_blibpath = optarg;
|
|
break;
|
|
|
|
case OPTION_NOLIBPATH:
|
|
command_line_blibpath = NULL;
|
|
break;
|
|
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* This is called when an input file can not be recognized as a BFD
|
|
object or an archive. If the file starts with #!, we must treat it
|
|
as an import file. This is for AIX compatibility. */
|
|
|
|
static boolean
|
|
gld${EMULATION_NAME}_unrecognized_file (entry)
|
|
lang_input_statement_type *entry;
|
|
{
|
|
FILE *e;
|
|
boolean ret;
|
|
|
|
e = fopen (entry->filename, FOPEN_RT);
|
|
if (e == NULL)
|
|
return false;
|
|
|
|
ret = false;
|
|
|
|
if (getc (e) == '#' && getc (e) == '!')
|
|
{
|
|
struct filelist *n;
|
|
struct filelist **flpp;
|
|
|
|
n = (struct filelist *) xmalloc (sizeof (struct filelist));
|
|
n->next = NULL;
|
|
n->name = entry->filename;
|
|
flpp = &import_files;
|
|
while (*flpp != NULL)
|
|
flpp = &(*flpp)->next;
|
|
*flpp = n;
|
|
|
|
ret = true;
|
|
entry->loaded = true;
|
|
}
|
|
|
|
fclose (e);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* This is called after the input files have been opened. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_after_open ()
|
|
{
|
|
boolean r;
|
|
struct set_info *p;
|
|
|
|
/* Call ldctor_build_sets, after pretending that this is a
|
|
relocateable link. We do this because AIX requires relocation
|
|
entries for all references to symbols, even in a final
|
|
executable. Of course, we only want to do this if we are
|
|
producing an XCOFF output file. */
|
|
r = link_info.relocateable;
|
|
if (strstr (bfd_get_target (output_bfd), "xcoff") != NULL)
|
|
link_info.relocateable = true;
|
|
ldctor_build_sets ();
|
|
link_info.relocateable = r;
|
|
|
|
/* For each set, record the size, so that the XCOFF backend can
|
|
output the correct csect length. */
|
|
for (p = sets; p != (struct set_info *) NULL; p = p->next)
|
|
{
|
|
bfd_size_type size;
|
|
|
|
/* If the symbol is defined, we may have been invoked from
|
|
collect, and the sets may already have been built, so we do
|
|
not do anything. */
|
|
if (p->h->type == bfd_link_hash_defined
|
|
|| p->h->type == bfd_link_hash_defweak)
|
|
continue;
|
|
|
|
if (p->reloc != BFD_RELOC_CTOR)
|
|
{
|
|
/* Handle this if we need to. */
|
|
abort ();
|
|
}
|
|
|
|
size = (p->count + 2) * 4;
|
|
if (!bfd_xcoff_link_record_set (output_bfd, &link_info, p->h, size))
|
|
einfo ("%F%P: bfd_xcoff_link_record_set failed: %E\n");
|
|
}
|
|
}
|
|
|
|
/* This is called after the sections have been attached to output
|
|
sections, but before any sizes or addresses have been set. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_before_allocation ()
|
|
{
|
|
struct filelist *fl;
|
|
struct export_symbol_list *el;
|
|
char *libpath;
|
|
asection *special_sections[XCOFF_NUMBER_OF_SPECIAL_SECTIONS];
|
|
int i;
|
|
|
|
/* Handle the import and export files, if any. */
|
|
for (fl = import_files; fl != NULL; fl = fl->next)
|
|
gld${EMULATION_NAME}_read_file (fl->name, true);
|
|
for (el = export_symbols; el != NULL; el = el->next)
|
|
{
|
|
struct bfd_link_hash_entry *h;
|
|
|
|
h = bfd_link_hash_lookup (link_info.hash, el->name, false, false, false);
|
|
if (h == NULL)
|
|
einfo ("%P%F: bfd_link_hash_lookup of export symbol failed: %E\n");
|
|
if (!bfd_xcoff_export_symbol (output_bfd, &link_info, h))
|
|
einfo ("%P%F: bfd_xcoff_export_symbol failed: %E\n");
|
|
}
|
|
|
|
/* Track down all relocations called for by the linker script (these
|
|
are typically constructor/destructor entries created by
|
|
CONSTRUCTORS) and let the backend know it will need to create
|
|
.loader relocs for them. */
|
|
lang_for_each_statement (gld${EMULATION_NAME}_find_relocs);
|
|
|
|
/* Precedence of LIBPATH
|
|
-blibpath: native support always first
|
|
-rpath: gnu extension
|
|
-L build from command line -L's */
|
|
if (command_line_blibpath != NULL)
|
|
libpath = command_line_blibpath;
|
|
else if (command_line.rpath != NULL)
|
|
libpath = command_line.rpath;
|
|
else if (search_head == NULL)
|
|
libpath = (char *) "";
|
|
else
|
|
{
|
|
size_t len;
|
|
search_dirs_type *search;
|
|
|
|
len = strlen (search_head->name);
|
|
libpath = xmalloc (len + 1);
|
|
strcpy (libpath, search_head->name);
|
|
for (search = search_head->next; search != NULL; search = search->next)
|
|
{
|
|
size_t nlen;
|
|
|
|
nlen = strlen (search->name);
|
|
libpath = xrealloc (libpath, len + nlen + 2);
|
|
libpath[len] = ':';
|
|
strcpy (libpath + len + 1, search->name);
|
|
len += nlen + 1;
|
|
}
|
|
}
|
|
|
|
/* Let the XCOFF backend set up the .loader section. */
|
|
if (!bfd_xcoff_size_dynamic_sections
|
|
(output_bfd, &link_info, libpath, entry_symbol.name, file_align,
|
|
maxstack, maxdata, gc && !unix_ld ? true : false,
|
|
modtype, textro ? true : false, unix_ld, special_sections,
|
|
rtld ? true : false))
|
|
einfo ("%P%F: failed to set dynamic section sizes: %E\n");
|
|
|
|
/* Look through the special sections, and put them in the right
|
|
place in the link ordering. This is especially magic. */
|
|
for (i = 0; i < XCOFF_NUMBER_OF_SPECIAL_SECTIONS; i++)
|
|
{
|
|
asection *sec;
|
|
lang_output_section_statement_type *os;
|
|
lang_statement_union_type **pls;
|
|
lang_input_section_type *is;
|
|
const char *oname;
|
|
boolean start;
|
|
|
|
sec = special_sections[i];
|
|
if (sec == NULL)
|
|
continue;
|
|
|
|
/* Remove this section from the list of the output section.
|
|
This assumes we know what the script looks like. */
|
|
is = NULL;
|
|
os = lang_output_section_find (sec->output_section->name);
|
|
if (os == NULL)
|
|
einfo ("%P%F: can't find output section %s\n",
|
|
sec->output_section->name);
|
|
|
|
for (pls = &os->children.head; *pls != NULL; pls = &(*pls)->header.next)
|
|
{
|
|
if ((*pls)->header.type == lang_input_section_enum
|
|
&& (*pls)->input_section.section == sec)
|
|
{
|
|
is = (lang_input_section_type *) * pls;
|
|
*pls = (*pls)->header.next;
|
|
break;
|
|
}
|
|
|
|
if ((*pls)->header.type == lang_wild_statement_enum)
|
|
{
|
|
lang_statement_union_type **pwls;
|
|
|
|
for (pwls = &(*pls)->wild_statement.children.head;
|
|
*pwls != NULL; pwls = &(*pwls)->header.next)
|
|
{
|
|
|
|
if ((*pwls)->header.type == lang_input_section_enum
|
|
&& (*pwls)->input_section.section == sec)
|
|
{
|
|
is = (lang_input_section_type *) * pwls;
|
|
*pwls = (*pwls)->header.next;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (is != NULL)
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (is == NULL)
|
|
{
|
|
einfo ("%P%F: can't find %s in output section\n",
|
|
bfd_get_section_name (sec->owner, sec));
|
|
}
|
|
|
|
/* Now figure out where the section should go. */
|
|
switch (i)
|
|
{
|
|
|
|
default: /* to avoid warnings */
|
|
case XCOFF_SPECIAL_SECTION_TEXT:
|
|
/* _text */
|
|
oname = ".text";
|
|
start = true;
|
|
break;
|
|
|
|
case XCOFF_SPECIAL_SECTION_ETEXT:
|
|
/* _etext */
|
|
oname = ".text";
|
|
start = false;
|
|
break;
|
|
|
|
case XCOFF_SPECIAL_SECTION_DATA:
|
|
/* _data */
|
|
oname = ".data";
|
|
start = true;
|
|
break;
|
|
|
|
case XCOFF_SPECIAL_SECTION_EDATA:
|
|
/* _edata */
|
|
oname = ".data";
|
|
start = false;
|
|
break;
|
|
|
|
case XCOFF_SPECIAL_SECTION_END:
|
|
case XCOFF_SPECIAL_SECTION_END2:
|
|
/* _end and end */
|
|
oname = ".bss";
|
|
start = false;
|
|
break;
|
|
}
|
|
|
|
os = lang_output_section_find (oname);
|
|
|
|
if (start)
|
|
{
|
|
is->header.next = os->children.head;
|
|
os->children.head = (lang_statement_union_type *) is;
|
|
}
|
|
else
|
|
{
|
|
is->header.next = NULL;
|
|
lang_statement_append (&os->children,
|
|
(lang_statement_union_type *) is,
|
|
&is->header.next);
|
|
}
|
|
}
|
|
}
|
|
|
|
static char *
|
|
gld${EMULATION_NAME}_choose_target (argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
int i, j, jmax;
|
|
static char *from_outside;
|
|
static char *from_inside;
|
|
static char *argv_to_target[][2] = {
|
|
{NULL, "${OUTPUT_FORMAT}"},
|
|
{"-b32", "${OUTPUT_FORMAT_32BIT}"},
|
|
{"-b64", "${OUTPUT_FORMAT_64BIT}"},
|
|
};
|
|
|
|
jmax = 3;
|
|
|
|
from_outside = getenv (TARGET_ENVIRON);
|
|
if (from_outside != (char *) NULL)
|
|
return from_outside;
|
|
|
|
/* Set to default. */
|
|
from_inside = argv_to_target[0][1];
|
|
for (i = 1; i < argc; i++)
|
|
{
|
|
for (j = 1; j < jmax; j++)
|
|
{
|
|
if (0 == strcmp (argv[i], argv_to_target[j][0]))
|
|
from_inside = argv_to_target[j][1];
|
|
}
|
|
}
|
|
|
|
return from_inside;
|
|
}
|
|
|
|
/* Returns
|
|
1 : state changed
|
|
0 : no change */
|
|
static int
|
|
change_symbol_mode (input)
|
|
char *input;
|
|
{
|
|
char *symbol_mode_string[] = {
|
|
"# 32", /* 0x01 */
|
|
"# 64", /* 0x02 */
|
|
"# no32", /* 0x04 */
|
|
"# no64", /* 0x08 */
|
|
NULL,
|
|
};
|
|
|
|
unsigned int bit;
|
|
char *string;
|
|
|
|
for (bit = 0;; bit++)
|
|
{
|
|
string = symbol_mode_string[bit];
|
|
if (string == NULL)
|
|
return 0;
|
|
|
|
if (0 == strcmp (input, string))
|
|
{
|
|
symbol_mode = (1 << bit);
|
|
return 1;
|
|
}
|
|
}
|
|
/* should not be here */
|
|
return 0;
|
|
}
|
|
|
|
/* Returns
|
|
1 : yes
|
|
0 : ignore
|
|
-1 : error, try something else */
|
|
static int
|
|
is_syscall (input, flag)
|
|
char *input;
|
|
unsigned int *flag;
|
|
{
|
|
unsigned int bit;
|
|
char *string;
|
|
|
|
struct sc {
|
|
char *syscall_string;
|
|
unsigned int flag;
|
|
} s [] = {
|
|
{ "svc" /* 0x01 */, XCOFF_SYSCALL32 },
|
|
{ "svc32" /* 0x02 */, XCOFF_SYSCALL32 },
|
|
{ "svc3264" /* 0x04 */, XCOFF_SYSCALL32 | XCOFF_SYSCALL64 },
|
|
{ "svc64" /* 0x08 */, XCOFF_SYSCALL64 },
|
|
{ "syscall" /* 0x10 */, XCOFF_SYSCALL32 },
|
|
{ "syscall32" /* 0x20 */, XCOFF_SYSCALL32 },
|
|
{ "syscall3264" /* 0x40 */, XCOFF_SYSCALL32 | XCOFF_SYSCALL64 },
|
|
{ "syscall64" /* 0x80 */, XCOFF_SYSCALL64 },
|
|
{ NULL, 0 },
|
|
};
|
|
|
|
*flag = 0;
|
|
|
|
for (bit = 0;; bit++)
|
|
{
|
|
string = s[bit].syscall_string;
|
|
if (string == NULL)
|
|
return -1;
|
|
|
|
if (0 == strcmp (input, string))
|
|
{
|
|
if (1 << bit & syscall_mask)
|
|
{
|
|
*flag = s[bit].flag;
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
/* should not be here */
|
|
return -1;
|
|
}
|
|
|
|
/* Read an import or export file. For an import file, this is called
|
|
by the before_allocation emulation routine. For an export file,
|
|
this is called by the parse_args emulation routine. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_read_file (filename, import)
|
|
const char *filename;
|
|
boolean import;
|
|
{
|
|
struct obstack *o;
|
|
FILE *f;
|
|
int lineno;
|
|
int c;
|
|
boolean keep;
|
|
const char *imppath;
|
|
const char *impfile;
|
|
const char *impmember;
|
|
|
|
o = (struct obstack *) xmalloc (sizeof (struct obstack));
|
|
obstack_specify_allocation (o, 0, 0, xmalloc, gld${EMULATION_NAME}_free);
|
|
|
|
f = fopen (filename, FOPEN_RT);
|
|
if (f == NULL)
|
|
{
|
|
bfd_set_error (bfd_error_system_call);
|
|
einfo ("%F%s: %E\n", filename);
|
|
}
|
|
|
|
keep = false;
|
|
|
|
imppath = NULL;
|
|
impfile = NULL;
|
|
impmember = NULL;
|
|
|
|
lineno = 0;
|
|
|
|
/* Default to 32 and 64 bit mode
|
|
symbols at top of /lib/syscalls.exp do not have a mode modifier and they
|
|
are not repeated, assume 64 bit routines also want to use them.
|
|
See the routine change_symbol_mode for more information. */
|
|
|
|
symbol_mode = 0x04;
|
|
|
|
while ((c = getc (f)) != EOF)
|
|
{
|
|
char *s;
|
|
char *symname;
|
|
unsigned int syscall_flag = 0;
|
|
bfd_vma address;
|
|
struct bfd_link_hash_entry *h;
|
|
|
|
if (c != '\n')
|
|
{
|
|
obstack_1grow (o, c);
|
|
continue;
|
|
}
|
|
|
|
obstack_1grow (o, '\0');
|
|
++lineno;
|
|
|
|
s = (char *) obstack_base (o);
|
|
while (ISSPACE (*s))
|
|
++s;
|
|
if (*s == '\0'
|
|
|| *s == '*'
|
|
|| change_symbol_mode (s)
|
|
|| (*s == '#' && s[1] == ' ')
|
|
|| (!import && *s == '#' && s[1] == '!'))
|
|
{
|
|
obstack_free (o, obstack_base (o));
|
|
continue;
|
|
}
|
|
|
|
if (*s == '#' && s[1] == '!')
|
|
{
|
|
s += 2;
|
|
while (ISSPACE (*s))
|
|
++s;
|
|
if (*s == '\0')
|
|
{
|
|
imppath = NULL;
|
|
impfile = NULL;
|
|
impmember = NULL;
|
|
obstack_free (o, obstack_base (o));
|
|
}
|
|
else if (*s == '(')
|
|
einfo ("%F%s%d: #! ([member]) is not supported in import files\n",
|
|
filename, lineno);
|
|
else
|
|
{
|
|
char cs;
|
|
char *file;
|
|
|
|
(void) obstack_finish (o);
|
|
keep = true;
|
|
imppath = s;
|
|
file = NULL;
|
|
while (!ISSPACE (*s) && *s != '(' && *s != '\0')
|
|
{
|
|
if (*s == '/')
|
|
file = s + 1;
|
|
++s;
|
|
}
|
|
if (file != NULL)
|
|
{
|
|
file[-1] = '\0';
|
|
impfile = file;
|
|
if (imppath == file - 1)
|
|
imppath = "/";
|
|
}
|
|
else
|
|
{
|
|
impfile = imppath;
|
|
imppath = "";
|
|
}
|
|
cs = *s;
|
|
*s = '\0';
|
|
while (ISSPACE (cs))
|
|
{
|
|
++s;
|
|
cs = *s;
|
|
}
|
|
if (cs != '(')
|
|
{
|
|
impmember = "";
|
|
if (cs != '\0')
|
|
einfo ("%s:%d: warning: syntax error in import file\n",
|
|
filename, lineno);
|
|
}
|
|
else
|
|
{
|
|
++s;
|
|
impmember = s;
|
|
while (*s != ')' && *s != '\0')
|
|
++s;
|
|
if (*s == ')')
|
|
*s = '\0';
|
|
else
|
|
einfo ("%s:%d: warning: syntax error in import file\n",
|
|
filename, lineno);
|
|
}
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
if (symbol_mode & symbol_mode_mask)
|
|
{
|
|
/* This is a symbol to be imported or exported. */
|
|
symname = s;
|
|
syscall_flag = 0;
|
|
address = (bfd_vma) -1;
|
|
|
|
while (!ISSPACE (*s) && *s != '\0')
|
|
++s;
|
|
if (*s != '\0')
|
|
{
|
|
char *se;
|
|
|
|
*s++ = '\0';
|
|
|
|
while (ISSPACE (*s))
|
|
++s;
|
|
|
|
se = s;
|
|
while (!ISSPACE (*se) && *se != '\0')
|
|
++se;
|
|
if (*se != '\0')
|
|
{
|
|
*se++ = '\0';
|
|
while (ISSPACE (*se))
|
|
++se;
|
|
if (*se != '\0')
|
|
einfo ("%s%d: warning: syntax error in import/export file\n",
|
|
filename, lineno);
|
|
}
|
|
|
|
if (s != se)
|
|
{
|
|
int status;
|
|
char *end;
|
|
|
|
status = is_syscall (s, &syscall_flag);
|
|
|
|
if (0 > status)
|
|
{
|
|
/* not a system call, check for address */
|
|
address = strtoul (s, &end, 0);
|
|
if (*end != '\0')
|
|
{
|
|
einfo ("%s:%d: warning: syntax error in import/export file\n",
|
|
filename, lineno);
|
|
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!import)
|
|
{
|
|
struct export_symbol_list *n;
|
|
|
|
ldlang_add_undef (symname);
|
|
n = ((struct export_symbol_list *)
|
|
xmalloc (sizeof (struct export_symbol_list)));
|
|
n->next = export_symbols;
|
|
n->name = xstrdup (symname);
|
|
export_symbols = n;
|
|
}
|
|
else
|
|
{
|
|
h = bfd_link_hash_lookup (link_info.hash, symname, false, false,
|
|
true);
|
|
if (h == NULL || h->type == bfd_link_hash_new)
|
|
{
|
|
/* We can just ignore attempts to import an unreferenced
|
|
symbol. */
|
|
}
|
|
else
|
|
{
|
|
if (!bfd_xcoff_import_symbol (output_bfd, &link_info, h,
|
|
address, imppath, impfile,
|
|
impmember, syscall_flag))
|
|
einfo ("%X%s:%d: failed to import symbol %s: %E\n",
|
|
filename, lineno, symname);
|
|
}
|
|
}
|
|
}
|
|
obstack_free (o, obstack_base (o));
|
|
}
|
|
|
|
if (obstack_object_size (o) > 0)
|
|
{
|
|
einfo ("%s:%d: warning: ignoring unterminated last line\n",
|
|
filename, lineno);
|
|
obstack_free (o, obstack_base (o));
|
|
}
|
|
|
|
if (!keep)
|
|
{
|
|
obstack_free (o, NULL);
|
|
free (o);
|
|
}
|
|
}
|
|
|
|
/* This routine saves us from worrying about declaring free. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_free (p)
|
|
PTR p;
|
|
{
|
|
free (p);
|
|
}
|
|
|
|
/* This is called by the before_allocation routine via
|
|
lang_for_each_statement. It looks for relocations and assignments
|
|
to symbols. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_find_relocs (s)
|
|
lang_statement_union_type *s;
|
|
{
|
|
if (s->header.type == lang_reloc_statement_enum)
|
|
{
|
|
lang_reloc_statement_type *rs;
|
|
|
|
rs = &s->reloc_statement;
|
|
if (rs->name == NULL)
|
|
einfo ("%F%P: only relocations against symbols are permitted\n");
|
|
if (!bfd_xcoff_link_count_reloc (output_bfd, &link_info, rs->name))
|
|
einfo ("%F%P: bfd_xcoff_link_count_reloc failed: %E\n");
|
|
}
|
|
|
|
if (s->header.type == lang_assignment_statement_enum)
|
|
gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
|
|
}
|
|
|
|
/* Look through an expression for an assignment statement. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp)
|
|
etree_type *exp;
|
|
{
|
|
struct bfd_link_hash_entry *h;
|
|
|
|
switch (exp->type.node_class)
|
|
{
|
|
case etree_provide:
|
|
h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst,
|
|
false, false, false);
|
|
if (h == NULL)
|
|
break;
|
|
/* Fall through. */
|
|
case etree_assign:
|
|
if (strcmp (exp->assign.dst, ".") != 0)
|
|
{
|
|
if (!bfd_xcoff_record_link_assignment (output_bfd, &link_info,
|
|
exp->assign.dst))
|
|
einfo ("%P%F: failed to record assignment to %s: %E\n",
|
|
exp->assign.dst);
|
|
}
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
|
|
break;
|
|
|
|
case etree_binary:
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
|
|
break;
|
|
|
|
case etree_trinary:
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
|
|
break;
|
|
|
|
case etree_unary:
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static char *
|
|
gld${EMULATION_NAME}_get_script (isfile)
|
|
int *isfile;
|
|
EOF
|
|
|
|
if test -n "$COMPILE_IN"
|
|
then
|
|
# Scripts compiled in.
|
|
|
|
# sed commands to quote an ld script as a C string.
|
|
sc="-f ${srcdir}/emultempl/ostring.sed"
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
{
|
|
*isfile = 0;
|
|
|
|
if (link_info.relocateable == true && config.build_constructors == true)
|
|
return
|
|
EOF
|
|
sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
|
|
echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
|
|
echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
|
|
echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
|
|
echo ' ; else return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
|
|
echo '; }' >> e${EMULATION_NAME}.c
|
|
|
|
else
|
|
# Scripts read from the filesystem.
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
{
|
|
*isfile = 1;
|
|
|
|
if (link_info.relocateable == true && config.build_constructors == true)
|
|
return "ldscripts/${EMULATION_NAME}.xu";
|
|
else if (link_info.relocateable == true)
|
|
return "ldscripts/${EMULATION_NAME}.xr";
|
|
else if (!config.text_read_only)
|
|
return "ldscripts/${EMULATION_NAME}.xbn";
|
|
else if (!config.magic_demand_paged)
|
|
return "ldscripts/${EMULATION_NAME}.xn";
|
|
else
|
|
return "ldscripts/${EMULATION_NAME}.x";
|
|
}
|
|
EOF
|
|
|
|
fi
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_create_output_section_statements ()
|
|
{
|
|
/* __rtinit */
|
|
if ((bfd_get_flavour (output_bfd) == bfd_target_xcoff_flavour)
|
|
&& (link_info.init_function != NULL
|
|
|| link_info.fini_function != NULL
|
|
|| rtld == true))
|
|
{
|
|
initfini_file = lang_add_input_file ("initfini",
|
|
lang_input_file_is_file_enum,
|
|
NULL);
|
|
|
|
initfini_file->the_bfd = bfd_create ("initfini", output_bfd);
|
|
if (initfini_file->the_bfd == NULL
|
|
|| ! bfd_set_arch_mach (initfini_file->the_bfd,
|
|
bfd_get_arch (output_bfd),
|
|
bfd_get_mach (output_bfd)))
|
|
{
|
|
einfo ("%X%P: can not create BFD %E\n");
|
|
return;
|
|
}
|
|
|
|
/* Call backend to fill in the rest */
|
|
if (false == bfd_xcoff_link_generate_rtinit (initfini_file->the_bfd,
|
|
link_info.init_function,
|
|
link_info.fini_function,
|
|
rtld))
|
|
{
|
|
einfo ("%X%P: can not create BFD %E\n");
|
|
return;
|
|
}
|
|
|
|
/* __rtld defined in /lib/librtl.a */
|
|
if (true == rtld)
|
|
lang_add_input_file ("rtl", lang_input_file_is_l_enum, NULL);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_set_output_arch ()
|
|
{
|
|
bfd_set_arch_mach (output_bfd,
|
|
bfd_xcoff_architecture (output_bfd),
|
|
bfd_xcoff_machine (output_bfd));
|
|
|
|
ldfile_output_architecture = bfd_get_arch (output_bfd);
|
|
ldfile_output_machine = bfd_get_mach (output_bfd);
|
|
ldfile_output_machine_name = bfd_printable_name (output_bfd);
|
|
}
|
|
|
|
struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = {
|
|
gld${EMULATION_NAME}_before_parse,
|
|
syslib_default,
|
|
hll_default,
|
|
after_parse_default,
|
|
gld${EMULATION_NAME}_after_open,
|
|
after_allocation_default,
|
|
gld${EMULATION_NAME}_set_output_arch,
|
|
gld${EMULATION_NAME}_choose_target,
|
|
gld${EMULATION_NAME}_before_allocation,
|
|
gld${EMULATION_NAME}_get_script,
|
|
"${EMULATION_NAME}",
|
|
"${OUTPUT_FORMAT}",
|
|
0, /* finish */
|
|
gld${EMULATION_NAME}_create_output_section_statements,
|
|
0, /* open_dynamic_archive */
|
|
0, /* place_orphan */
|
|
0, /* set_symbols */
|
|
gld${EMULATION_NAME}_parse_args,
|
|
gld${EMULATION_NAME}_unrecognized_file,
|
|
NULL, /* list_options */
|
|
NULL, /* recognized_file */
|
|
NULL, /* find potential_libraries */
|
|
NULL /* new_vers_pattern */
|
|
};
|
|
EOF
|