Commit | Line | Data |
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c279ca3e | 1 | # This shell script emits a C file. -*- C -*- |
6f2750fe | 2 | # Copyright (C) 2003-2016 Free Software Foundation, Inc. |
c279ca3e | 3 | # |
f96b4a7b | 4 | # This file is part of the GNU Binutils. |
c279ca3e AM |
5 | # |
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 | |
f96b4a7b | 8 | # the Free Software Foundation; either version 3 of the License, or |
c279ca3e AM |
9 | # (at your option) any later version. |
10 | # | |
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. | |
15 | # | |
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 | |
f96b4a7b NC |
18 | # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | # MA 02110-1301, USA. | |
c279ca3e AM |
20 | # |
21 | ||
22 | # This file is sourced from elf32.em, and defines extra alpha | |
23 | # specific routines. | |
24 | # | |
92b93329 | 25 | fragment <<EOF |
c279ca3e AM |
26 | |
27 | #include "elf/internal.h" | |
28 | #include "elf/alpha.h" | |
29 | #include "elf-bfd.h" | |
30 | ||
8d6d53d4 | 31 | static bfd_boolean limit_32bit; |
8d6d53d4 RH |
32 | |
33 | extern bfd_boolean elf64_alpha_use_secureplt; | |
8d6d53d4 | 34 | |
c279ca3e AM |
35 | |
36 | /* Set the start address as in the Tru64 ld. */ | |
37 | #define ALPHA_TEXT_START_32BIT 0x12000000 | |
38 | ||
8d6d53d4 RH |
39 | static void |
40 | alpha_after_open (void) | |
41 | { | |
5503fea1 | 42 | if (bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour |
4dfe6ac6 | 43 | && elf_object_id (link_info.output_bfd) == ALPHA_ELF_DATA) |
8d6d53d4 RH |
44 | { |
45 | unsigned int num_plt; | |
46 | lang_output_section_statement_type *os; | |
47 | lang_output_section_statement_type *plt_os[2]; | |
48 | ||
49 | num_plt = 0; | |
50 | for (os = &lang_output_section_statement.head->output_section_statement; | |
51 | os != NULL; | |
52 | os = os->next) | |
53 | { | |
54 | if (os->constraint == SPECIAL && strcmp (os->name, ".plt") == 0) | |
55 | { | |
56 | if (num_plt < 2) | |
57 | plt_os[num_plt] = os; | |
58 | ++num_plt; | |
59 | } | |
60 | } | |
61 | ||
62 | if (num_plt == 2) | |
63 | { | |
64 | plt_os[0]->constraint = elf64_alpha_use_secureplt ? 0 : -1; | |
65 | plt_os[1]->constraint = elf64_alpha_use_secureplt ? -1 : 0; | |
66 | } | |
67 | } | |
68 | ||
69 | gld${EMULATION_NAME}_after_open (); | |
70 | } | |
71 | ||
c279ca3e | 72 | static void |
0c7a8e5a | 73 | alpha_after_parse (void) |
c279ca3e | 74 | { |
d1c109de | 75 | link_info.relax_pass = 2; |
0e1862bb L |
76 | if (limit_32bit |
77 | && !bfd_link_pic (&link_info) | |
78 | && !bfd_link_relocatable (&link_info)) | |
c279ca3e AM |
79 | lang_section_start (".interp", |
80 | exp_binop ('+', | |
81 | exp_intop (ALPHA_TEXT_START_32BIT), | |
7a5df8d0 NC |
82 | exp_nameop (SIZEOF_HEADERS, NULL)), |
83 | NULL); | |
97b11f40 | 84 | |
5fe2850d | 85 | gld${EMULATION_NAME}_after_parse (); |
c279ca3e AM |
86 | } |
87 | ||
8d6d53d4 RH |
88 | static void |
89 | alpha_before_allocation (void) | |
90 | { | |
91 | /* Call main function; we're just extending it. */ | |
92 | gld${EMULATION_NAME}_before_allocation (); | |
93 | ||
94 | /* Add -relax if -O, not -r, and not explicitly disabled. */ | |
0e1862bb L |
95 | if (link_info.optimize |
96 | && !bfd_link_relocatable (&link_info) | |
97 | && ! RELAXATION_DISABLED_BY_USER) | |
28d5f677 | 98 | ENABLE_RELAXATION; |
8d6d53d4 RH |
99 | } |
100 | ||
c279ca3e | 101 | static void |
0c7a8e5a | 102 | alpha_finish (void) |
c279ca3e | 103 | { |
8d6d53d4 | 104 | if (limit_32bit) |
f13a99db | 105 | elf_elfheader (link_info.output_bfd)->e_flags |= EF_ALPHA_32BIT; |
c279ca3e | 106 | |
eaeb0a9d | 107 | finish_default (); |
c279ca3e AM |
108 | } |
109 | EOF | |
110 | ||
111 | # Define some shell vars to insert bits of code into the standard elf | |
112 | # parse_args and list_options functions. | |
113 | # | |
114 | PARSE_AND_LIST_PROLOGUE=' | |
8d6d53d4 | 115 | #define OPTION_TASO 300 |
28d5f677 | 116 | #define OPTION_SECUREPLT (OPTION_TASO + 1) |
8d6d53d4 | 117 | #define OPTION_NO_SECUREPLT (OPTION_SECUREPLT + 1) |
c279ca3e AM |
118 | ' |
119 | ||
120 | PARSE_AND_LIST_LONGOPTS=' | |
8d6d53d4 | 121 | { "taso", no_argument, NULL, OPTION_TASO }, |
8d6d53d4 RH |
122 | { "secureplt", no_argument, NULL, OPTION_SECUREPLT }, |
123 | { "no-secureplt", no_argument, NULL, OPTION_NO_SECUREPLT }, | |
c279ca3e AM |
124 | ' |
125 | ||
126 | PARSE_AND_LIST_OPTIONS=' | |
8d6d53d4 | 127 | fprintf (file, _("\ |
442996ee AM |
128 | --taso Load executable in the lower 31-bit addressable\n\ |
129 | virtual address range.\n\ | |
442996ee AM |
130 | --secureplt Force PLT in text segment.\n\ |
131 | --no-secureplt Force PLT in data segment.\n\ | |
8d6d53d4 | 132 | ")); |
c279ca3e AM |
133 | ' |
134 | ||
135 | PARSE_AND_LIST_ARGS_CASES=' | |
136 | case OPTION_TASO: | |
8d6d53d4 RH |
137 | limit_32bit = 1; |
138 | break; | |
8d6d53d4 RH |
139 | case OPTION_SECUREPLT: |
140 | elf64_alpha_use_secureplt = TRUE; | |
141 | break; | |
142 | case OPTION_NO_SECUREPLT: | |
143 | elf64_alpha_use_secureplt = FALSE; | |
c279ca3e AM |
144 | break; |
145 | ' | |
146 | ||
147 | # Put these extra alpha routines in ld_${EMULATION_NAME}_emulation | |
148 | # | |
8d6d53d4 | 149 | LDEMUL_AFTER_OPEN=alpha_after_open |
c279ca3e | 150 | LDEMUL_AFTER_PARSE=alpha_after_parse |
8d6d53d4 | 151 | LDEMUL_BEFORE_ALLOCATION=alpha_before_allocation |
c279ca3e | 152 | LDEMUL_FINISH=alpha_finish |