1 # This shell script emits a C file. -*- C -*-
2 # Copyright 2003, 2005 Free Software Foundation, Inc.
4 # This file is part of GLD, the Gnu Linker.
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
21 # This file is sourced from elf32.em, and defines extra powerpc32-elf
24 cat >>e${EMULATION_NAME}.c <<EOF
27 #include "elf32-ppc.h"
29 extern const bfd_target bfd_elf32_powerpc_vec;
30 extern const bfd_target bfd_elf32_powerpcle_vec;
31 extern const bfd_target bfd_elf32_powerpc_vxworks_vec;
34 is_ppc_elf32_vec(const bfd_target * vec)
36 return (vec == &bfd_elf32_powerpc_vec
37 || vec == &bfd_elf32_powerpc_vxworks_vec
38 || vec == &bfd_elf32_powerpcle_vec);
41 /* Whether to run tls optimization. */
42 static int notlsopt = 0;
44 /* Whether to emit symbols for stubs. */
45 static int emit_stub_syms = 0;
47 /* Chooses the correct place for .plt and .got. */
48 static int old_plt = 0;
49 static int old_got = 0;
54 if (is_ppc_elf32_vec (link_info.hash->creator))
60 lang_output_section_statement_type *os;
61 lang_output_section_statement_type *plt_os[2];
62 lang_output_section_statement_type *got_os[2];
64 emit_stub_syms |= link_info.emitrelocations;
65 new_plt = ppc_elf_select_plt_layout (output_bfd, &link_info, old_plt,
68 einfo ("%X%P: select_plt_layout problem %E\n");
72 for (os = &lang_output_section_statement.head->output_section_statement;
76 if (os->constraint == SPECIAL && strcmp (os->name, ".plt") == 0)
82 if (os->constraint == SPECIAL && strcmp (os->name, ".got") == 0)
90 keep_new = new_plt == 1 ? 0 : -1;
93 plt_os[0]->constraint = keep_new;
94 plt_os[1]->constraint = ~keep_new;
100 got_os[0]->constraint = keep_new;
101 got_os[1]->constraint = ~keep_new;
105 gld${EMULATION_NAME}_after_open ();
109 ppc_before_allocation (void)
111 if (is_ppc_elf32_vec (link_info.hash->creator))
113 if (ppc_elf_tls_setup (output_bfd, &link_info) && !notlsopt)
115 if (!ppc_elf_tls_optimize (output_bfd, &link_info))
117 einfo ("%X%P: TLS problem %E\n");
122 gld${EMULATION_NAME}_before_allocation ();
127 # Define some shell vars to insert bits of code into the standard elf
128 # parse_args and list_options functions.
130 PARSE_AND_LIST_PROLOGUE='
131 #define OPTION_NO_TLS_OPT 301
132 #define OPTION_OLD_PLT 302
133 #define OPTION_OLD_GOT 303
134 #define OPTION_STUBSYMS 304
137 PARSE_AND_LIST_LONGOPTS='
138 { "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS },
139 { "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT },
140 { "bss-plt", no_argument, NULL, OPTION_OLD_PLT },
141 { "sdata-got", no_argument, NULL, OPTION_OLD_GOT },
144 PARSE_AND_LIST_OPTIONS='
146 --emit-stub-syms Label linker stubs with a symbol.\n\
147 --no-tls-optimize Don'\''t try to optimize TLS accesses.\n\
148 --bss-plt Force old-style BSS PLT.\n\
149 --sdata-got Force GOT location just before .sdata.\n"
153 PARSE_AND_LIST_ARGS_CASES='
154 case OPTION_STUBSYMS:
158 case OPTION_NO_TLS_OPT:
171 # Put these extra ppc32elf routines in ld_${EMULATION_NAME}_emulation
173 LDEMUL_AFTER_OPEN=ppc_after_open
174 LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation