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560b3fe2 | 1 | # This shell script emits a C file. -*- C -*- |
a2c58332 | 2 | # Copyright (C) 2021-2022 Free Software Foundation, Inc. |
560b3fe2 | 3 | # Contributed by Loongson Ltd. |
4 | # | |
5 | # This file is part of the GNU Binutils. | |
6 | # | |
7 | # This program is free software; you can redistribute it and/or modify | |
8 | # it under the terms of the GNU General Public License as published by | |
9 | # the Free Software Foundation; either version 3 of the License, or | |
10 | # (at your option) any later version. | |
11 | # | |
12 | # This program is distributed in the hope that it will be useful, | |
13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | # GNU General Public License for more details. | |
16 | # | |
17 | # You should have received a copy of the GNU General Public License | |
18 | # along with this program; see the file COPYING3. If not, | |
19 | # see <http://www.gnu.org/licenses/>. | |
20 | ||
21 | fragment <<EOF | |
22 | ||
23 | #include "ldmain.h" | |
24 | #include "ldctor.h" | |
25 | #include "elf/loongarch.h" | |
26 | ||
27 | static void | |
28 | larch_elf_before_allocation (void) | |
29 | { | |
30 | gld${EMULATION_NAME}_before_allocation (); | |
31 | ||
32 | if (link_info.discard == discard_sec_merge) | |
33 | link_info.discard = discard_l; | |
34 | ||
35 | if (!bfd_link_relocatable (&link_info)) | |
36 | { | |
37 | /* We always need at least some relaxation to handle code alignment. */ | |
38 | if (RELAXATION_DISABLED_BY_USER) | |
39 | TARGET_ENABLE_RELAXATION; | |
40 | else | |
41 | ENABLE_RELAXATION; | |
42 | } | |
43 | ||
44 | link_info.relax_pass = 3; | |
45 | } | |
46 | ||
47 | static void | |
48 | gld${EMULATION_NAME}_after_allocation (void) | |
49 | { | |
50 | int need_layout = 0; | |
51 | ||
52 | /* Don't attempt to discard unused .eh_frame sections until the final link, | |
53 | as we can't reliably tell if they're used until after relaxation. */ | |
54 | if (!bfd_link_relocatable (&link_info)) | |
55 | { | |
56 | need_layout = bfd_elf_discard_info (link_info.output_bfd, &link_info); | |
57 | if (need_layout < 0) | |
58 | { | |
59 | einfo (_("%X%P: .eh_frame/.stab edit: %E\n")); | |
60 | return; | |
61 | } | |
62 | } | |
63 | ||
64 | /* gld${EMULATION_NAME}_map_segments (need_layout); */ | |
65 | ldelf_map_segments (need_layout); | |
66 | } | |
67 | ||
68 | /* This is a convenient point to tell BFD about target specific flags. | |
69 | After the output has been created, but before inputs are read. */ | |
70 | ||
71 | static void | |
72 | larch_create_output_section_statements (void) | |
73 | { | |
74 | /* See PR 22920 for an example of why this is necessary. */ | |
75 | if (strstr (bfd_get_target (link_info.output_bfd), "loong") == NULL) | |
76 | { | |
77 | einfo (_("%F%P: error: cannot change output format" | |
78 | " whilst linking %s binaries\n"), "LoongArch"); | |
79 | return; | |
80 | } | |
81 | } | |
82 | ||
83 | EOF | |
84 | ||
85 | LDEMUL_BEFORE_ALLOCATION=larch_elf_before_allocation | |
86 | LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation | |
87 | LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=larch_create_output_section_statements |