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Annotation of src/external/gpl3/binutils.old/dist/ld/emultempl/riscvelf.em, Revision 1.5.2.1

1.1       christos    1: # This shell script emits a C file. -*- C -*-
1.5.2.1 ! martin      2: #   Copyright (C) 2004-2018 Free Software Foundation, Inc.
1.1       christos    3: #
                      4: # This file is part of the GNU Binutils.
                      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
                      8: # the Free Software Foundation; either version 3 of the License, or
                      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
                     18: # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
                     19: # MA 02110-1301, USA.
                     20:
                     21: fragment <<EOF
                     22:
                     23: #include "ldmain.h"
                     24: #include "ldctor.h"
                     25: #include "elf/riscv.h"
                     26: #include "elfxx-riscv.h"
                     27:
                     28: static void
                     29: riscv_elf_before_allocation (void)
                     30: {
                     31:   gld${EMULATION_NAME}_before_allocation ();
                     32:
                     33:   if (link_info.discard == discard_sec_merge)
                     34:     link_info.discard = discard_l;
                     35:
1.5.2.1 ! martin     36:   if (!bfd_link_relocatable (&link_info))
        !            37:     {
        !            38:       /* We always need at least some relaxation to handle code alignment.  */
        !            39:       if (RELAXATION_DISABLED_BY_USER)
        !            40:        TARGET_ENABLE_RELAXATION;
        !            41:       else
        !            42:        ENABLE_RELAXATION;
        !            43:     }
1.1       christos   44:
1.5.2.1 ! martin     45:   link_info.relax_pass = 3;
1.1       christos   46: }
                     47:
                     48: static void
                     49: gld${EMULATION_NAME}_after_allocation (void)
                     50: {
                     51:   int need_layout = 0;
                     52:
                     53:   /* Don't attempt to discard unused .eh_frame sections until the final link,
                     54:      as we can't reliably tell if they're used until after relaxation.  */
1.3       christos   55:   if (!bfd_link_relocatable (&link_info))
1.1       christos   56:     {
                     57:       need_layout = bfd_elf_discard_info (link_info.output_bfd, &link_info);
                     58:       if (need_layout < 0)
                     59:        {
1.5.2.1 ! martin     60:          einfo (_("%X%P: .eh_frame/.stab edit: %E\n"));
1.1       christos   61:          return;
                     62:        }
                     63:     }
                     64:
                     65:   gld${EMULATION_NAME}_map_segments (need_layout);
                     66: }
                     67:
1.5.2.1 ! martin     68: /* This is a convenient point to tell BFD about target specific flags.
        !            69:    After the output has been created, but before inputs are read.  */
        !            70:
        !            71: static void
        !            72: riscv_create_output_section_statements (void)
        !            73: {
        !            74:   /* See PR 22920 for an example of why this is necessary.  */
        !            75:   if (strstr (bfd_get_target (link_info.output_bfd), "riscv") == NULL)
        !            76:     {
        !            77:       /* The RISC-V backend needs special fields in the output hash structure.
        !            78:         These will only be created if the output format is a RISC-V format,
        !            79:         hence we do not support linking and changing output formats at the
        !            80:         same time.  Use a link followed by objcopy to change output formats.  */
        !            81:       einfo (_("%F%P: error: cannot change output format"
        !            82:               " whilst linking %s binaries\n"), "RISC-V");
        !            83:       return;
        !            84:     }
        !            85: }
        !            86:
1.1       christos   87: EOF
                     88:
                     89: LDEMUL_BEFORE_ALLOCATION=riscv_elf_before_allocation
                     90: LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation
1.5.2.1 ! martin     91: LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=riscv_create_output_section_statements