[deliverable/binutils-gdb.git] / ld / emultempl / riscvelf.em

# This shell script emits a C file. -*- C -*-
#   Copyright (C) 2004-2018 Free Software Foundation, Inc.
#
# This file is part of the GNU Binutils.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
# MA 02110-1301, USA.

fragment <<EOF

#include "ldmain.h"
#include "ldctor.h"
#include "elf/riscv.h"
#include "elfxx-riscv.h"

static void
riscv_elf_before_allocation (void)
{
  gld${EMULATION_NAME}_before_allocation ();

  if (link_info.discard == discard_sec_merge)
    link_info.discard = discard_l;

  /* We always need at least some relaxation to handle code alignment.  */
  if (RELAXATION_DISABLED_BY_USER)
    TARGET_ENABLE_RELAXATION;
  else
    ENABLE_RELAXATION;

  link_info.relax_pass = 3;
}

static void
gld${EMULATION_NAME}_after_allocation (void)
{
  int need_layout = 0;

  /* Don't attempt to discard unused .eh_frame sections until the final link,
     as we can't reliably tell if they're used until after relaxation.  */
  if (!bfd_link_relocatable (&link_info))
    {
      need_layout = bfd_elf_discard_info (link_info.output_bfd, &link_info);
      if (need_layout < 0)
	{
	  einfo (_("%X%P: .eh_frame/.stab edit: %E\n"));
	  return;
	}
    }

  gld${EMULATION_NAME}_map_segments (need_layout);
}

/* This is a convenient point to tell BFD about target specific flags.
   After the output has been created, but before inputs are read.  */

static void
riscv_create_output_section_statements (void)
{
  /* See PR 22920 for an example of why this is necessary.  */
  if (strstr (bfd_get_target (link_info.output_bfd), "riscv") == NULL)
    {
      /* The RISC-V backend needs special fields in the output hash structure.
	 These will only be created if the output format is a RISC-V format,
	 hence we do not support linking and changing output formats at the
	 same time.  Use a link followed by objcopy to change output formats.  */
      einfo (_("%F%P: error: cannot change output format"
	       " whilst linking %s binaries\n"), "RISC-V");
      return;
    }
}

EOF

LDEMUL_BEFORE_ALLOCATION=riscv_elf_before_allocation
LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation
LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=riscv_create_output_section_statements
Commit	Line	Data
e23eba97	1	# This shell script emits a C file. -- C --
219d1afa	2	# Copyright (C) 2004-2018 Free Software Foundation, Inc.
e23eba97 NC	3	#
	4	# This file is part of the GNU Binutils.
	5	#
	6	# This program is free software; you can redistribute it and/or modify
	7	# it under the terms of the GNU General Public License as published by
	8	# the Free Software Foundation; either version 3 of the License, or
	9	# (at your option) any later version.
	10	#
	11	# This program is distributed in the hope that it will be useful,
	12	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	# GNU General Public License for more details.
	15	#
	16	# You should have received a copy of the GNU General Public License
	17	# along with this program; if not, write to the Free Software
	18	# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
	19	# MA 02110-1301, USA.
	20
	21	fragment <<EOF
	22
	23	#include "ldmain.h"
	24	#include "ldctor.h"
	25	#include "elf/riscv.h"
	26	#include "elfxx-riscv.h"
	27
	28	static void
	29	riscv_elf_before_allocation (void)
	30	{
	31	gld${EMULATION_NAME}_before_allocation ();
	32
	33	if (link_info.discard == discard_sec_merge)
	34	link_info.discard = discard_l;
	35
	36	/* We always need at least some relaxation to handle code alignment. */
	37	if (RELAXATION_DISABLED_BY_USER)
	38	TARGET_ENABLE_RELAXATION;
	39	else
	40	ENABLE_RELAXATION;
	41
ff6f4d9b	42	link_info.relax_pass = 3;
e23eba97 NC	43	}
	44
	45	static void
	46	gld${EMULATION_NAME}_after_allocation (void)
	47	{
	48	int need_layout = 0;
	49
	50	/* Don't attempt to discard unused .eh_frame sections until the final link,
	51	as we can't reliably tell if they're used until after relaxation. */
	52	if (!bfd_link_relocatable (&link_info))
	53	{
	54	need_layout = bfd_elf_discard_info (link_info.output_bfd, &link_info);
	55	if (need_layout < 0)
	56	{
d003af55	57	einfo (_("%X%P: .eh_frame/.stab edit: %E\n"));
e23eba97 NC	58	return;
	59	}
	60	}
	61
	62	gld${EMULATION_NAME}_map_segments (need_layout);
	63	}
	64
770aa8a3 JW	65	/* This is a convenient point to tell BFD about target specific flags.
	66	After the output has been created, but before inputs are read. */
	67
	68	static void
	69	riscv_create_output_section_statements (void)
	70	{
	71	/* See PR 22920 for an example of why this is necessary. */
	72	if (strstr (bfd_get_target (link_info.output_bfd), "riscv") == NULL)
	73	{
	74	/* The RISC-V backend needs special fields in the output hash structure.
	75	These will only be created if the output format is a RISC-V format,
	76	hence we do not support linking and changing output formats at the
	77	same time. Use a link followed by objcopy to change output formats. */
	78	einfo (_("%F%P: error: cannot change output format"
	79	" whilst linking %s binaries\n"), "RISC-V");
	80	return;
	81	}
	82	}
	83
e23eba97 NC	84	EOF
	85
	86	LDEMUL_BEFORE_ALLOCATION=riscv_elf_before_allocation
	87	LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation
770aa8a3	88	LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=riscv_create_output_section_statements