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fd67aa1129
Adds two new external authors to etc/update-copyright.py to cover bfd/ax_tls.m4, and adds gprofng to dirs handled automatically, then updates copyright messages as follows: 1) Update cgen/utils.scm emitted copyrights. 2) Run "etc/update-copyright.py --this-year" with an extra external author I haven't committed, 'Kalray SA.', to cover gas testsuite files (which should have their copyright message removed). 3) Build with --enable-maintainer-mode --enable-cgen-maint=yes. 4) Check out */po/*.pot which we don't update frequently.
212 lines
5.7 KiB
C
212 lines
5.7 KiB
C
/* KVX-specific support for ELF.
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Copyright (C) 2009-2024 Free Software Foundation, Inc.
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Contributed by Kalray SA.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING3. If not,
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see <http://www.gnu.org/licenses/>. */
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#include "sysdep.h"
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#include "elfxx-kvx.h"
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#include <stdarg.h>
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#include <string.h>
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/* Return non-zero if the indicated VALUE has overflowed the maximum
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range expressible by a unsigned number with the indicated number of
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BITS. */
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static bfd_reloc_status_type
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kvx_unsigned_overflow (bfd_vma value, unsigned int bits)
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{
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bfd_vma lim;
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if (bits >= sizeof (bfd_vma) * 8)
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return bfd_reloc_ok;
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lim = (bfd_vma) 1 << bits;
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if (value >= lim)
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return bfd_reloc_overflow;
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return bfd_reloc_ok;
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}
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/* Return non-zero if the indicated VALUE has overflowed the maximum
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range expressible by an signed number with the indicated number of
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BITS. */
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static bfd_reloc_status_type
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kvx_signed_overflow (bfd_vma value, unsigned int bits)
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{
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bfd_vma lim;
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if (bits >= sizeof (bfd_vma) * 8)
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return bfd_reloc_ok;
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lim = (bfd_vma) 1 << (bits - 1);
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if (value + lim >= lim * 2)
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return bfd_reloc_overflow;
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return bfd_reloc_ok;
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}
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/* Insert the addend/value into the instruction or data object being
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relocated. */
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bfd_reloc_status_type
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_bfd_kvx_elf_put_addend (bfd *abfd,
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bfd_byte *address,
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bfd_reloc_code_real_type r_type ATTRIBUTE_UNUSED,
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reloc_howto_type *howto,
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bfd_signed_vma addend)
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{
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bfd_reloc_status_type status = bfd_reloc_ok;
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bfd_vma contents;
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int size;
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size = bfd_get_reloc_size (howto);
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switch (size)
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{
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case 2:
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contents = bfd_get_16 (abfd, address);
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break;
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case 4:
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if (howto->src_mask != 0xffffffff)
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/* Must be 32-bit instruction, always little-endian. */
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contents = bfd_getl32 (address);
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else
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/* Must be 32-bit data (endianness dependent). */
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contents = bfd_get_32 (abfd, address);
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break;
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case 8:
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contents = bfd_get_64 (abfd, address);
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break;
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default:
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abort ();
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}
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switch (howto->complain_on_overflow)
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{
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case complain_overflow_dont:
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break;
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case complain_overflow_signed:
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status = kvx_signed_overflow (addend,
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howto->bitsize + howto->rightshift);
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break;
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case complain_overflow_unsigned:
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status = kvx_unsigned_overflow (addend,
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howto->bitsize + howto->rightshift);
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break;
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case complain_overflow_bitfield:
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default:
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abort ();
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}
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addend >>= howto->rightshift;
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/* FIXME KVX : AARCH64 is "redoing" what the link_relocate bfd
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* function does ie. extract bitfields and apply then to the
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* existing content (insn) (howto's job) Not sure exactly
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* why. Maybe because we need this even when not applying reloc
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* against a input_bfd (eg. when doing PLT). On KVX, we have not
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* reached a point where we would need to write similar
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* functions for each insn. So we'll simply enrich the default
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* case for handling a bit more than "right aligned bitfields"
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*
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* Beware that this won't be able to apply generic howto !
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*/
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/* if (howto->dst_mask & (howto->dst_mask + 1)) */
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/* return bfd_reloc_notsupported; */
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addend <<= howto->bitpos;
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contents = ((contents & ~howto->dst_mask) | (addend & howto->dst_mask));
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switch (size)
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{
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case 2:
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bfd_put_16 (abfd, contents, address);
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break;
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case 4:
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if (howto->dst_mask != 0xffffffff)
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/* must be 32-bit instruction, always little-endian */
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bfd_putl32 (contents, address);
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else
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/* must be 32-bit data (endianness dependent) */
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bfd_put_32 (abfd, contents, address);
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break;
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case 8:
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bfd_put_64 (abfd, contents, address);
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break;
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default:
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abort ();
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}
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return status;
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}
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bool
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_bfd_kvx_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
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{
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int offset;
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size_t size;
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switch (note->descsz)
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{
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case 680: /* sizeof(struct elf_prstatus) on Linux/kvx. */
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/* pr_cursig */
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elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
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/* pr_pid */
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elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
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/* pr_reg */
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offset = 112;
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size = 560;
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break;
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default:
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return false;
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}
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/* Make a ".reg/999" section. */
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return _bfd_elfcore_make_pseudosection (abfd, ".reg", size,
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note->descpos + offset);
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}
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bool
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_bfd_kvx_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
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{
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switch (note->descsz)
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{
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case 136: /* This is sizeof(struct elf_prpsinfo) on Linux/kvx. */
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elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24);
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elf_tdata (abfd)->core->program
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= _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
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elf_tdata (abfd)->core->command
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= _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
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break;
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default:
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return false;
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}
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/* Note that for some reason, a spurious space is tacked
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onto the end of the args in some (at least one anyway)
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implementations, so strip it off if it exists. */
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{
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char *command = elf_tdata (abfd)->core->command;
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int n = strlen (command);
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if (n > 0 && command[n - 1] == ' ')
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command[n - 1] = 0;
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}
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return true;
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}
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