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jeremybenn |
/* BFD back-end for National Semiconductor's CR16C ELF
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Copyright 2004, 2005, 2006, 2007, 2009, 2010
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Free Software Foundation, Inc.
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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; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "bfdlink.h"
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#include "elf/cr16c.h"
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#include "elf-bfd.h"
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#define USE_REL 1 /* CR16C uses REL relocations instead of RELA. */
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/* The following definition is based on EMPTY_HOWTO macro,
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but also initiates the "name" field in HOWTO struct. */
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#define ONLY_NAME_HOWTO(C) \
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HOWTO ((C), 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, \
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STRINGX(C), FALSE, 0, 0, FALSE)
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/* reloc_map_index array maps CRASM relocation type into a BFD
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relocation enum. The array's indices are synchronized with
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RINDEX_16C_* indices, created in include/elf/cr16c.h.
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The array is used in:
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1. elf32-cr16c.c : elf_cr16c_reloc_type_lookup().
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2. asreloc.c : find_reloc_type(). */
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RELOC_MAP reloc_map_index[RINDEX_16C_MAX] =
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{
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{R_16C_NUM08, BFD_RELOC_16C_NUM08},
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{R_16C_NUM08_C, BFD_RELOC_16C_NUM08_C},
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{R_16C_NUM16, BFD_RELOC_16C_NUM16},
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{R_16C_NUM16_C, BFD_RELOC_16C_NUM16_C},
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{R_16C_NUM32, BFD_RELOC_16C_NUM32},
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{R_16C_NUM32_C, BFD_RELOC_16C_NUM32_C},
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{R_16C_DISP04, BFD_RELOC_16C_DISP04},
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{R_16C_DISP04_C, BFD_RELOC_16C_DISP04_C},
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{R_16C_DISP08, BFD_RELOC_16C_DISP08},
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{R_16C_DISP08_C, BFD_RELOC_16C_DISP08_C},
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{R_16C_DISP16, BFD_RELOC_16C_DISP16},
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{R_16C_DISP16_C, BFD_RELOC_16C_DISP16_C},
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{R_16C_DISP24, BFD_RELOC_16C_DISP24},
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{R_16C_DISP24_C, BFD_RELOC_16C_DISP24_C},
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{R_16C_DISP24a, BFD_RELOC_16C_DISP24a},
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{R_16C_DISP24a_C, BFD_RELOC_16C_DISP24a_C},
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{R_16C_REG04, BFD_RELOC_16C_REG04},
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{R_16C_REG04_C, BFD_RELOC_16C_REG04_C},
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{R_16C_REG04a, BFD_RELOC_16C_REG04a},
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{R_16C_REG04a_C, BFD_RELOC_16C_REG04a_C},
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{R_16C_REG14, BFD_RELOC_16C_REG14},
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{R_16C_REG14_C, BFD_RELOC_16C_REG14_C},
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{R_16C_REG16, BFD_RELOC_16C_REG16},
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{R_16C_REG16_C, BFD_RELOC_16C_REG16_C},
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{R_16C_REG20, BFD_RELOC_16C_REG20},
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{R_16C_REG20_C, BFD_RELOC_16C_REG20_C},
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{R_16C_ABS20, BFD_RELOC_16C_ABS20},
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{R_16C_ABS20_C, BFD_RELOC_16C_ABS20_C},
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{R_16C_ABS24, BFD_RELOC_16C_ABS24},
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{R_16C_ABS24_C, BFD_RELOC_16C_ABS24_C},
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{R_16C_IMM04, BFD_RELOC_16C_IMM04},
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{R_16C_IMM04_C, BFD_RELOC_16C_IMM04_C},
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{R_16C_IMM16, BFD_RELOC_16C_IMM16},
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{R_16C_IMM16_C, BFD_RELOC_16C_IMM16_C},
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{R_16C_IMM20, BFD_RELOC_16C_IMM20},
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{R_16C_IMM20_C, BFD_RELOC_16C_IMM20_C},
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{R_16C_IMM24, BFD_RELOC_16C_IMM24},
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{R_16C_IMM24_C, BFD_RELOC_16C_IMM24_C},
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{R_16C_IMM32, BFD_RELOC_16C_IMM32},
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{R_16C_IMM32_C, BFD_RELOC_16C_IMM32_C}
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};
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static reloc_howto_type elf_howto_table[] =
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{
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/* 00 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM08),
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/* 01 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM08_C),
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/* 02 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM16),
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/* 03 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM16_C),
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/* 04 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM32),
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/* 05 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM32_C),
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/* 06 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP04),
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/* 07 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP04_C),
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/* 08 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP08),
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/* 09 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP08_C),
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/* 10 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP16),
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/* 11 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP16_C),
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/* 12 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP24),
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/* 13 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP24_C),
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/* 14 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP24a),
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/* 15 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP24a_C),
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/* 16 */ ONLY_NAME_HOWTO (RINDEX_16C_REG04),
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/* 17 */ ONLY_NAME_HOWTO (RINDEX_16C_REG04_C),
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/* 18 */ ONLY_NAME_HOWTO (RINDEX_16C_REG04a),
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/* 19 */ ONLY_NAME_HOWTO (RINDEX_16C_REG04a_C),
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/* 20 */ ONLY_NAME_HOWTO (RINDEX_16C_REG14),
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/* 21 */ ONLY_NAME_HOWTO (RINDEX_16C_REG14_C),
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/* 22 */ ONLY_NAME_HOWTO (RINDEX_16C_REG16),
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/* 23 */ ONLY_NAME_HOWTO (RINDEX_16C_REG16_C),
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/* 24 */ ONLY_NAME_HOWTO (RINDEX_16C_REG20),
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/* 25 */ ONLY_NAME_HOWTO (RINDEX_16C_REG20_C),
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/* 26 */ ONLY_NAME_HOWTO (RINDEX_16C_ABS20),
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/* 27 */ ONLY_NAME_HOWTO (RINDEX_16C_ABS20_C),
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/* 28 */ ONLY_NAME_HOWTO (RINDEX_16C_ABS24),
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/* 29 */ ONLY_NAME_HOWTO (RINDEX_16C_ABS24_C),
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/* 30 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM04),
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/* 31 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM04_C),
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/* 32 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM16),
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/* 33 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM16_C),
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/* 34 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM20),
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/* 35 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM20_C),
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/* 36 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM24),
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/* 37 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM24_C),
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/* 38 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM32),
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/* 39 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM32_C)
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};
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/* Code to turn a code_type into a howto ptr, uses the above howto table. */
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static reloc_howto_type *
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elf_cr16c_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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bfd_reloc_code_real_type code)
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{
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unsigned int i;
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for (i = 0; i < RINDEX_16C_MAX; i++)
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{
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if (code == reloc_map_index[i].bfd_reloc_enum)
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{
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/* printf ("CR16C Relocation Type is - %x\n", code); */
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return & elf_howto_table[i];
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}
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}
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/* printf ("This relocation Type is not supported - %x\n", code); */
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return 0;
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}
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static reloc_howto_type *
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elf_cr16c_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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const char *r_name)
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{
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unsigned int i;
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for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
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if (elf_howto_table[i].name != NULL
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&& strcasecmp (elf_howto_table[i].name, r_name) == 0)
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return &elf_howto_table[i];
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return NULL;
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}
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static void
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elf_cr16c_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
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arelent *cache_ptr ATTRIBUTE_UNUSED,
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Elf_Internal_Rela *dst ATTRIBUTE_UNUSED)
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{
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abort ();
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}
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static void
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elf_cr16c_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
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arelent *cache_ptr,
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Elf_Internal_Rela *dst)
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{
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unsigned int r_type = ELF32_R_TYPE (dst->r_info);
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BFD_ASSERT (r_type < (unsigned int) RINDEX_16C_MAX);
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cache_ptr->howto = &elf_howto_table[r_type];
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}
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/* Perform a relocation as part of a final link. */
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static bfd_reloc_status_type
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cr16c_elf_final_link_relocate (reloc_howto_type *howto,
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bfd *abfd,
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bfd *output_bfd ATTRIBUTE_UNUSED,
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asection *input_section,
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bfd_byte *data,
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bfd_vma octets,
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bfd_vma Rvalue,
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bfd_vma addend ATTRIBUTE_UNUSED,
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struct bfd_link_info *info ATTRIBUTE_UNUSED,
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asection *sym_sec ATTRIBUTE_UNUSED,
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int is_local ATTRIBUTE_UNUSED)
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{
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long value;
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short sword; /* Extracted from the hole and put back. */
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unsigned long format, addr_type, code_factor;
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unsigned short size;
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unsigned short r_type;
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unsigned long disp20_opcod;
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char neg = 0;
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char neg2pos = 0;
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long left_val = 0;
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long plus_factor = 0; /* To be added to the hole. */
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#define MIN_BYTE ((int) 0xFFFFFF80)
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#define MIN_WORD ((int) 0xFFFF8000)
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#define MAX_UWORD ((unsigned) 0x0000FFFF)
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#define MAX_UBYTE ((unsigned) 0x000000FF)
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r_type = reloc_map_index[howto->type].cr_reloc_type;
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format = r_type & R_FORMAT;
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size = r_type & R_SIZESP;
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addr_type = r_type & R_ADDRTYPE;
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code_factor = ((addr_type == R_CODE_ADDR) ? 1 : 0);
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switch (format)
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{
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case R_NUMBER:
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switch (size)
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{
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case R_S_16C_08: /* One byte. */
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value = bfd_get_8 (abfd, (char *) data + octets);
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break;
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case R_S_16C_16: /* Two bytes. */
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sword = bfd_get_16 (abfd, (bfd_byte *) data + octets);
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value = sword;
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break;
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case R_S_16C_32: /* Four bytes. */
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value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
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break;
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| 242 |
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default:
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| 243 |
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return bfd_reloc_notsupported;
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}
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| 245 |
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break;
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| 246 |
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| 247 |
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case R_16C_DISPL:
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| 248 |
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switch (size)
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| 249 |
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{
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| 250 |
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case R_S_16C_04: /* word1(4-7). */
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value = bfd_get_8 (abfd, (char *) data + octets);
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| 252 |
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left_val = value & 0xF;
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| 253 |
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value = (value & 0xF0) >> 4;
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value++;
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| 255 |
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value <<= 1;
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| 256 |
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break;
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| 257 |
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case R_S_16C_08: /* word1(0-3,8-11). */
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| 258 |
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sword = bfd_get_16 (abfd, (char *) data + octets);
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| 259 |
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value = sword & 0x000F;
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| 260 |
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value |= ((sword & 0x0F00) >> 4);
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left_val = sword & 0xF0F0;
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| 262 |
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value <<= 1;
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| 263 |
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if (value & 0x100)
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value |= 0xFFFFFF00;
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| 265 |
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break;
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| 266 |
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case R_S_16C_16: /* word2. */
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| 267 |
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sword = bfd_get_16 (abfd, (bfd_byte *) data + octets);
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| 268 |
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value = sword;
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| 269 |
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value = ((value & 0xFFFE) >> 1) | ((value & 0x1) << 15);
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| 270 |
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value <<= 1;
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| 271 |
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if (value & 0x10000)
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| 272 |
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value |= 0xFFFF0000;
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| 273 |
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break;
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| 274 |
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case R_S_16C_24_a: /* word1(0-7),word2. */
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| 275 |
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value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
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| 276 |
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left_val = value & 0x0000FF00;
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| 277 |
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value = ((value & 0xFFFE0000) >> 17) |
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| 278 |
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((value & 0x00010000) << 7) | ((value & 0x000000FF) << 15);
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| 279 |
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value <<= 1;
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| 280 |
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if (value & 0x1000000)
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| 281 |
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value |= 0xFE000000;
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| 282 |
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break;
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| 283 |
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case R_S_16C_24: /* word2(0-3,8-11),word3. */
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| 284 |
|
|
value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
|
| 285 |
|
|
left_val = value & 0x0000F0F0;
|
| 286 |
|
|
value = ((value >> 16) & 0x0000FFFF) |
|
| 287 |
|
|
((value & 0x00000F00) << 8) | ((value & 0x0000000F) << 20);
|
| 288 |
|
|
|
| 289 |
|
|
value = ((value & 0x00FFFFFE) >> 1) | ((value & 0x00000001) << 23);
|
| 290 |
|
|
|
| 291 |
|
|
value <<= 1;
|
| 292 |
|
|
if (value & 0x1000000)
|
| 293 |
|
|
value |= 0xFE000000;
|
| 294 |
|
|
break;
|
| 295 |
|
|
default:
|
| 296 |
|
|
return bfd_reloc_notsupported;
|
| 297 |
|
|
}
|
| 298 |
|
|
break;
|
| 299 |
|
|
|
| 300 |
|
|
case R_16C_REGREL:
|
| 301 |
|
|
switch (size)
|
| 302 |
|
|
{
|
| 303 |
|
|
case R_S_16C_04: /* word1(12-15) not scaled. */
|
| 304 |
|
|
value = bfd_get_8 (abfd, (char *) data + octets);
|
| 305 |
|
|
left_val = value & 0xF0;
|
| 306 |
|
|
value = value & 0xF;
|
| 307 |
|
|
break;
|
| 308 |
|
|
case R_S_16C_04_a: /* word1(12-15) scaled by 2. */
|
| 309 |
|
|
value = bfd_get_8 (abfd, (char *) data + octets);
|
| 310 |
|
|
left_val = value & 0xF0;
|
| 311 |
|
|
value = value & 0xF;
|
| 312 |
|
|
value <<= 1;
|
| 313 |
|
|
break;
|
| 314 |
|
|
case R_S_16C_14: /* word1(4-5),word2(0-3,8-15). */
|
| 315 |
|
|
value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
|
| 316 |
|
|
left_val = value & 0x00F0FFCF;
|
| 317 |
|
|
value = ((value & 0xc0000000) >> 24) |
|
| 318 |
|
|
((value & 0x3F000000) >> 16) |
|
| 319 |
|
|
((value & 0x000F0000) >> 16) | (value & 0x00000030);
|
| 320 |
|
|
break;
|
| 321 |
|
|
case R_S_16C_16: /* word2. */
|
| 322 |
|
|
sword = bfd_get_16 (abfd, (bfd_byte *) data + octets);
|
| 323 |
|
|
value = sword;
|
| 324 |
|
|
break;
|
| 325 |
|
|
case R_S_16C_20: /* word2(8-11),word3. */
|
| 326 |
|
|
value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
|
| 327 |
|
|
left_val = value & 0xF0;
|
| 328 |
|
|
value = (value & 0xF) << 16;
|
| 329 |
|
|
sword = bfd_get_16 (abfd, (bfd_byte *) data + octets + 1);
|
| 330 |
|
|
value = value | (unsigned short) sword;
|
| 331 |
|
|
disp20_opcod = bfd_get_32 (abfd, (bfd_byte *) data + octets - 3);
|
| 332 |
|
|
disp20_opcod |= 0x0FFF0000;
|
| 333 |
|
|
if ((disp20_opcod == 0x4FFF0018) || /* loadb -disp20(reg) */
|
| 334 |
|
|
(disp20_opcod == 0x5FFF0018) || /* loadb -disp20(rp) */
|
| 335 |
|
|
(disp20_opcod == 0x8FFF0018) || /* loadd -disp20(reg) */
|
| 336 |
|
|
(disp20_opcod == 0x9FFF0018) || /* loadd -disp20(rp) */
|
| 337 |
|
|
(disp20_opcod == 0xCFFF0018) || /* loadw -disp20(reg) */
|
| 338 |
|
|
(disp20_opcod == 0xDFFF0018) || /* loadw -disp20(rp) */
|
| 339 |
|
|
(disp20_opcod == 0x4FFF0019) || /* storb -disp20(reg) */
|
| 340 |
|
|
(disp20_opcod == 0x5FFF0019) || /* storb -disp20(rp) */
|
| 341 |
|
|
(disp20_opcod == 0x8FFF0019) || /* stord -disp20(reg) */
|
| 342 |
|
|
(disp20_opcod == 0x9FFF0019) || /* stord -disp20(rp) */
|
| 343 |
|
|
(disp20_opcod == 0xCFFF0019) || /* storw -disp20(reg) */
|
| 344 |
|
|
(disp20_opcod == 0xDFFF0019))
|
| 345 |
|
|
{ /* storw -disp20(rp). */
|
| 346 |
|
|
neg = 1;
|
| 347 |
|
|
value |= 0xFFF00000;
|
| 348 |
|
|
}
|
| 349 |
|
|
|
| 350 |
|
|
break;
|
| 351 |
|
|
default:
|
| 352 |
|
|
return bfd_reloc_notsupported;
|
| 353 |
|
|
}
|
| 354 |
|
|
break;
|
| 355 |
|
|
|
| 356 |
|
|
case R_16C_ABS:
|
| 357 |
|
|
switch (size)
|
| 358 |
|
|
{
|
| 359 |
|
|
case R_S_16C_20: /* word1(0-3),word2. */
|
| 360 |
|
|
value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
|
| 361 |
|
|
left_val = value & 0x0000FFF0;
|
| 362 |
|
|
value = ((value & 0xFFFF0000) >> 16) |
|
| 363 |
|
|
((value & 0x0000000F) << 16);
|
| 364 |
|
|
break;
|
| 365 |
|
|
case R_S_16C_24: /* word2(0-3,8-11),word3. */
|
| 366 |
|
|
value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
|
| 367 |
|
|
left_val = value & 0x0000F0F0;
|
| 368 |
|
|
value = ((value & 0xFFFF0000) >> 16) |
|
| 369 |
|
|
((value & 0x00000F00) << 8) | ((value & 0x0000000F) << 20);
|
| 370 |
|
|
break;
|
| 371 |
|
|
default:
|
| 372 |
|
|
return bfd_reloc_notsupported;
|
| 373 |
|
|
}
|
| 374 |
|
|
break;
|
| 375 |
|
|
|
| 376 |
|
|
case R_16C_IMMED:
|
| 377 |
|
|
switch (size)
|
| 378 |
|
|
{
|
| 379 |
|
|
case R_S_16C_04: /* word1/2(4-7). */
|
| 380 |
|
|
value = bfd_get_8 (abfd, (char *) data + octets);
|
| 381 |
|
|
left_val = value & 0xF;
|
| 382 |
|
|
value = (value & 0xF0) >> 4;
|
| 383 |
|
|
break;
|
| 384 |
|
|
case R_S_16C_16: /* word2. */
|
| 385 |
|
|
sword = bfd_get_16 (abfd, (bfd_byte *) data + octets);
|
| 386 |
|
|
value = sword;
|
| 387 |
|
|
break;
|
| 388 |
|
|
case R_S_16C_20: /* word1(0-3),word2. */
|
| 389 |
|
|
value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
|
| 390 |
|
|
left_val = value & 0x0000FFF0;
|
| 391 |
|
|
value = ((value & 0xFFFF0000) >> 16) |
|
| 392 |
|
|
((value & 0x0000000F) << 16);
|
| 393 |
|
|
break;
|
| 394 |
|
|
case R_S_16C_32: /* word2, word3. */
|
| 395 |
|
|
value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
|
| 396 |
|
|
value = ((value & 0x0000FFFF) << 16) |
|
| 397 |
|
|
((value & 0xFFFF0000) >> 16);
|
| 398 |
|
|
break;
|
| 399 |
|
|
default:
|
| 400 |
|
|
return bfd_reloc_notsupported;
|
| 401 |
|
|
}
|
| 402 |
|
|
break;
|
| 403 |
|
|
default:
|
| 404 |
|
|
return bfd_reloc_notsupported;
|
| 405 |
|
|
}
|
| 406 |
|
|
|
| 407 |
|
|
switch ((r_type & R_RELTO) >> 4)
|
| 408 |
|
|
{
|
| 409 |
|
|
|
| 410 |
|
|
case 0: /* R_ABS. */
|
| 411 |
|
|
plus_factor = Rvalue;
|
| 412 |
|
|
break;
|
| 413 |
|
|
case 1: /* R_PCREL. */
|
| 414 |
|
|
plus_factor = Rvalue -
|
| 415 |
|
|
(input_section->output_section->vma + input_section->output_offset);
|
| 416 |
|
|
break;
|
| 417 |
|
|
default:
|
| 418 |
|
|
return bfd_reloc_notsupported;
|
| 419 |
|
|
}
|
| 420 |
|
|
|
| 421 |
|
|
if (neg)
|
| 422 |
|
|
{
|
| 423 |
|
|
if (plus_factor >= -value)
|
| 424 |
|
|
neg2pos = 1;
|
| 425 |
|
|
/* We need to change load/stor with negative
|
| 426 |
|
|
displ opcode to positive disp opcode (CR16C). */
|
| 427 |
|
|
}
|
| 428 |
|
|
|
| 429 |
|
|
value = value + (plus_factor >> code_factor);
|
| 430 |
|
|
|
| 431 |
|
|
switch (format)
|
| 432 |
|
|
{
|
| 433 |
|
|
case R_NUMBER:
|
| 434 |
|
|
switch (size)
|
| 435 |
|
|
{
|
| 436 |
|
|
case R_S_16C_08: /* One byte. */
|
| 437 |
|
|
if (value > (int) MAX_UBYTE || value < MIN_BYTE)
|
| 438 |
|
|
return bfd_reloc_overflow;
|
| 439 |
|
|
value &= 0xFF;
|
| 440 |
|
|
bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
|
| 441 |
|
|
break;
|
| 442 |
|
|
|
| 443 |
|
|
case R_S_16C_16: /* Two bytes. */
|
| 444 |
|
|
if (value > (int) MAX_UWORD || value < MIN_WORD)
|
| 445 |
|
|
return bfd_reloc_overflow;
|
| 446 |
|
|
value &= 0xFFFF;
|
| 447 |
|
|
sword = value;
|
| 448 |
|
|
bfd_put_16 (abfd, (bfd_vma) sword,
|
| 449 |
|
|
(unsigned char *) data + octets);
|
| 450 |
|
|
break;
|
| 451 |
|
|
|
| 452 |
|
|
case R_S_16C_32: /* Four bytes. */
|
| 453 |
|
|
value &= 0xFFFFFFFF;
|
| 454 |
|
|
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
|
| 455 |
|
|
break;
|
| 456 |
|
|
|
| 457 |
|
|
default:
|
| 458 |
|
|
return bfd_reloc_notsupported;
|
| 459 |
|
|
}
|
| 460 |
|
|
break;
|
| 461 |
|
|
|
| 462 |
|
|
case R_16C_DISPL:
|
| 463 |
|
|
switch (size)
|
| 464 |
|
|
{
|
| 465 |
|
|
case R_S_16C_04: /* word1(4-7). */
|
| 466 |
|
|
if ((value - 32) > 32 || value < 2)
|
| 467 |
|
|
return bfd_reloc_overflow;
|
| 468 |
|
|
value >>= 1;
|
| 469 |
|
|
value--;
|
| 470 |
|
|
value &= 0xF;
|
| 471 |
|
|
value <<= 4;
|
| 472 |
|
|
value |= left_val;
|
| 473 |
|
|
bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
|
| 474 |
|
|
break;
|
| 475 |
|
|
|
| 476 |
|
|
case R_S_16C_08: /* word1(0-3,8-11). */
|
| 477 |
|
|
if (value > 255 || value < -256 || value == 0x80)
|
| 478 |
|
|
return bfd_reloc_overflow;
|
| 479 |
|
|
value &= 0x1FF;
|
| 480 |
|
|
value >>= 1;
|
| 481 |
|
|
sword = value & 0x000F;
|
| 482 |
|
|
sword |= (value & 0x00F0) << 4;
|
| 483 |
|
|
sword |= left_val;
|
| 484 |
|
|
bfd_put_16 (abfd, (bfd_vma) sword,
|
| 485 |
|
|
(unsigned char *) data + octets);
|
| 486 |
|
|
break;
|
| 487 |
|
|
|
| 488 |
|
|
case R_S_16C_16: /* word2. */
|
| 489 |
|
|
if (value > 65535 || value < -65536)
|
| 490 |
|
|
return bfd_reloc_overflow;
|
| 491 |
|
|
value >>= 1;
|
| 492 |
|
|
value &= 0xFFFF;
|
| 493 |
|
|
value = ((value & 0x8000) >> 15) | ((value & 0x7FFF) << 1);
|
| 494 |
|
|
sword = value;
|
| 495 |
|
|
bfd_put_16 (abfd, (bfd_vma) sword,
|
| 496 |
|
|
(unsigned char *) data + octets);
|
| 497 |
|
|
break;
|
| 498 |
|
|
|
| 499 |
|
|
case R_S_16C_24_a: /* word1(0-7),word2. */
|
| 500 |
|
|
if (value > 16777215 || value < -16777216)
|
| 501 |
|
|
return bfd_reloc_overflow;
|
| 502 |
|
|
value &= 0x1FFFFFF;
|
| 503 |
|
|
value >>= 1;
|
| 504 |
|
|
value = ((value & 0x00007FFF) << 17) |
|
| 505 |
|
|
((value & 0x00800000) >> 7) | ((value & 0x007F8000) >> 15);
|
| 506 |
|
|
value |= left_val;
|
| 507 |
|
|
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
|
| 508 |
|
|
break;
|
| 509 |
|
|
|
| 510 |
|
|
case R_S_16C_24: /* word2(0-3,8-11),word3. */
|
| 511 |
|
|
if (value > 16777215 || value < -16777216)
|
| 512 |
|
|
return bfd_reloc_overflow;
|
| 513 |
|
|
value &= 0x1FFFFFF;
|
| 514 |
|
|
value >>= 1;
|
| 515 |
|
|
|
| 516 |
|
|
value = ((value & 0x007FFFFF) << 1) | ((value & 0x00800000) >> 23);
|
| 517 |
|
|
|
| 518 |
|
|
value = ((value & 0x0000FFFF) << 16) |
|
| 519 |
|
|
((value & 0x000F0000) >> 8) | ((value & 0x00F00000) >> 20);
|
| 520 |
|
|
value |= left_val;
|
| 521 |
|
|
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
|
| 522 |
|
|
break;
|
| 523 |
|
|
|
| 524 |
|
|
default:
|
| 525 |
|
|
return bfd_reloc_notsupported;
|
| 526 |
|
|
}
|
| 527 |
|
|
break;
|
| 528 |
|
|
|
| 529 |
|
|
case R_16C_REGREL:
|
| 530 |
|
|
switch (size)
|
| 531 |
|
|
{
|
| 532 |
|
|
case R_S_16C_04: /* word1(12-15) not scaled. */
|
| 533 |
|
|
if (value > 13 || value < 0)
|
| 534 |
|
|
return bfd_reloc_overflow;
|
| 535 |
|
|
value &= 0xF;
|
| 536 |
|
|
value |= left_val;
|
| 537 |
|
|
bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
|
| 538 |
|
|
break;
|
| 539 |
|
|
|
| 540 |
|
|
case R_S_16C_04_a: /* word1(12-15) not scaled. */
|
| 541 |
|
|
if (value > 26 || value < 0)
|
| 542 |
|
|
return bfd_reloc_overflow;
|
| 543 |
|
|
value &= 0x1F;
|
| 544 |
|
|
value >>= 1;
|
| 545 |
|
|
value |= left_val;
|
| 546 |
|
|
bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
|
| 547 |
|
|
break;
|
| 548 |
|
|
|
| 549 |
|
|
case R_S_16C_14: /* word1(4-5),word2(0-3,8-15). */
|
| 550 |
|
|
if (value < 0 || value > 16383)
|
| 551 |
|
|
return bfd_reloc_overflow;
|
| 552 |
|
|
value &= 0x3FFF;
|
| 553 |
|
|
value = ((value & 0x000000c0) << 24) |
|
| 554 |
|
|
((value & 0x00003F00) << 16) |
|
| 555 |
|
|
((value & 0x0000000F) << 16) | (value & 0x00000030);
|
| 556 |
|
|
value |= left_val;
|
| 557 |
|
|
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
|
| 558 |
|
|
break;
|
| 559 |
|
|
|
| 560 |
|
|
case R_S_16C_16: /* word2. */
|
| 561 |
|
|
if (value > 65535 || value < 0)
|
| 562 |
|
|
return bfd_reloc_overflow;
|
| 563 |
|
|
value &= 0xFFFF;
|
| 564 |
|
|
sword = value;
|
| 565 |
|
|
bfd_put_16 (abfd, (bfd_vma) sword,
|
| 566 |
|
|
(unsigned char *) data + octets);
|
| 567 |
|
|
break;
|
| 568 |
|
|
|
| 569 |
|
|
case R_S_16C_20: /* word2(8-11),word3. */
|
| 570 |
|
|
/* if (value > 1048575 || value < 0) RELOC_ERROR(1); */
|
| 571 |
|
|
value &= 0xFFFFF;
|
| 572 |
|
|
sword = value & 0x0000FFFF;
|
| 573 |
|
|
value = (value & 0x000F0000) >> 16;
|
| 574 |
|
|
value |= left_val;
|
| 575 |
|
|
bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
|
| 576 |
|
|
bfd_put_16 (abfd, (bfd_vma) sword,
|
| 577 |
|
|
(unsigned char *) data + octets + 1);
|
| 578 |
|
|
if (neg2pos)
|
| 579 |
|
|
{
|
| 580 |
|
|
/* Change load/stor negative displ opcode
|
| 581 |
|
|
to load/stor positive displ opcode. */
|
| 582 |
|
|
value = bfd_get_8 (abfd, (char *) data + octets - 3);
|
| 583 |
|
|
value &= 0xF7;
|
| 584 |
|
|
value |= 0x2;
|
| 585 |
|
|
bfd_put_8 (abfd, (bfd_vma) value,
|
| 586 |
|
|
(unsigned char *) data + octets - 3);
|
| 587 |
|
|
}
|
| 588 |
|
|
break;
|
| 589 |
|
|
|
| 590 |
|
|
default:
|
| 591 |
|
|
return bfd_reloc_notsupported;
|
| 592 |
|
|
}
|
| 593 |
|
|
break;
|
| 594 |
|
|
|
| 595 |
|
|
case R_16C_ABS:
|
| 596 |
|
|
switch (size)
|
| 597 |
|
|
{
|
| 598 |
|
|
case R_S_16C_20: /* word1(0-3),word2. */
|
| 599 |
|
|
if (value > 1048575 || value < 0)
|
| 600 |
|
|
return bfd_reloc_overflow;
|
| 601 |
|
|
value &= 0xFFFFF;
|
| 602 |
|
|
value = ((value & 0x0000FFFF) << 16) |
|
| 603 |
|
|
((value & 0x000F0000) >> 16);
|
| 604 |
|
|
value |= left_val;
|
| 605 |
|
|
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
|
| 606 |
|
|
break;
|
| 607 |
|
|
|
| 608 |
|
|
case R_S_16C_24: /* word2(0-3,8-11),word3. */
|
| 609 |
|
|
/* if (value > 16777215 || value < 0) RELOC_ERROR(1); */
|
| 610 |
|
|
value &= 0xFFFFFF;
|
| 611 |
|
|
value = ((value & 0x0000FFFF) << 16) |
|
| 612 |
|
|
((value & 0x000F0000) >> 8) | ((value & 0x00F00000) >> 20);
|
| 613 |
|
|
value |= left_val;
|
| 614 |
|
|
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
|
| 615 |
|
|
break;
|
| 616 |
|
|
|
| 617 |
|
|
default:
|
| 618 |
|
|
return bfd_reloc_notsupported;
|
| 619 |
|
|
}
|
| 620 |
|
|
break;
|
| 621 |
|
|
|
| 622 |
|
|
case R_16C_IMMED:
|
| 623 |
|
|
switch (size)
|
| 624 |
|
|
{
|
| 625 |
|
|
case R_S_16C_04: /* word1/2(4-7). */
|
| 626 |
|
|
if (value > 15 || value < -1)
|
| 627 |
|
|
return bfd_reloc_overflow;
|
| 628 |
|
|
value &= 0xF;
|
| 629 |
|
|
value <<= 4;
|
| 630 |
|
|
value |= left_val;
|
| 631 |
|
|
bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
|
| 632 |
|
|
break;
|
| 633 |
|
|
|
| 634 |
|
|
case R_S_16C_16: /* word2. */
|
| 635 |
|
|
if (value > 32767 || value < -32768)
|
| 636 |
|
|
return bfd_reloc_overflow;
|
| 637 |
|
|
value &= 0xFFFF;
|
| 638 |
|
|
sword = value;
|
| 639 |
|
|
bfd_put_16 (abfd, (bfd_vma) sword,
|
| 640 |
|
|
(unsigned char *) data + octets);
|
| 641 |
|
|
break;
|
| 642 |
|
|
|
| 643 |
|
|
case R_S_16C_20: /* word1(0-3),word2. */
|
| 644 |
|
|
if (value > 1048575 || value < 0)
|
| 645 |
|
|
return bfd_reloc_overflow;
|
| 646 |
|
|
value &= 0xFFFFF;
|
| 647 |
|
|
value = ((value & 0x0000FFFF) << 16) |
|
| 648 |
|
|
((value & 0x000F0000) >> 16);
|
| 649 |
|
|
value |= left_val;
|
| 650 |
|
|
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
|
| 651 |
|
|
break;
|
| 652 |
|
|
|
| 653 |
|
|
case R_S_16C_32: /* word2, word3. */
|
| 654 |
|
|
value &= 0xFFFFFFFF;
|
| 655 |
|
|
value = ((value & 0x0000FFFF) << 16) |
|
| 656 |
|
|
((value & 0xFFFF0000) >> 16);
|
| 657 |
|
|
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
|
| 658 |
|
|
break;
|
| 659 |
|
|
|
| 660 |
|
|
default:
|
| 661 |
|
|
return bfd_reloc_notsupported;
|
| 662 |
|
|
}
|
| 663 |
|
|
break;
|
| 664 |
|
|
default:
|
| 665 |
|
|
return bfd_reloc_notsupported;
|
| 666 |
|
|
}
|
| 667 |
|
|
|
| 668 |
|
|
return bfd_reloc_ok;
|
| 669 |
|
|
}
|
| 670 |
|
|
|
| 671 |
|
|
/* Relocate a CR16C ELF section. */
|
| 672 |
|
|
|
| 673 |
|
|
static bfd_boolean
|
| 674 |
|
|
elf32_cr16c_relocate_section (bfd *output_bfd,
|
| 675 |
|
|
struct bfd_link_info *info,
|
| 676 |
|
|
bfd *input_bfd,
|
| 677 |
|
|
asection *input_section,
|
| 678 |
|
|
bfd_byte *contents,
|
| 679 |
|
|
Elf_Internal_Rela *relocs,
|
| 680 |
|
|
Elf_Internal_Sym *local_syms,
|
| 681 |
|
|
asection **local_sections)
|
| 682 |
|
|
{
|
| 683 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 684 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 685 |
|
|
Elf_Internal_Rela *rel, *relend;
|
| 686 |
|
|
|
| 687 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
| 688 |
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
| 689 |
|
|
|
| 690 |
|
|
rel = relocs;
|
| 691 |
|
|
relend = relocs + input_section->reloc_count;
|
| 692 |
|
|
for (; rel < relend; rel++)
|
| 693 |
|
|
{
|
| 694 |
|
|
int r_type;
|
| 695 |
|
|
reloc_howto_type *howto;
|
| 696 |
|
|
unsigned long r_symndx;
|
| 697 |
|
|
Elf_Internal_Sym *sym;
|
| 698 |
|
|
asection *sec;
|
| 699 |
|
|
struct elf_link_hash_entry *h;
|
| 700 |
|
|
bfd_vma relocation;
|
| 701 |
|
|
bfd_reloc_status_type r;
|
| 702 |
|
|
|
| 703 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 704 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 705 |
|
|
howto = elf_howto_table + r_type;
|
| 706 |
|
|
|
| 707 |
|
|
h = NULL;
|
| 708 |
|
|
sym = NULL;
|
| 709 |
|
|
sec = NULL;
|
| 710 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 711 |
|
|
{
|
| 712 |
|
|
sym = local_syms + r_symndx;
|
| 713 |
|
|
sec = local_sections[r_symndx];
|
| 714 |
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
| 715 |
|
|
}
|
| 716 |
|
|
else
|
| 717 |
|
|
{
|
| 718 |
|
|
bfd_boolean unresolved_reloc, warned;
|
| 719 |
|
|
|
| 720 |
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
| 721 |
|
|
r_symndx, symtab_hdr, sym_hashes,
|
| 722 |
|
|
h, sec, relocation,
|
| 723 |
|
|
unresolved_reloc, warned);
|
| 724 |
|
|
}
|
| 725 |
|
|
|
| 726 |
|
|
if (sec != NULL && elf_discarded_section (sec))
|
| 727 |
|
|
{
|
| 728 |
|
|
/* For relocs against symbols from removed linkonce sections,
|
| 729 |
|
|
or sections discarded by a linker script, we just want the
|
| 730 |
|
|
section contents zeroed. Avoid any special processing. */
|
| 731 |
|
|
_bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
|
| 732 |
|
|
rel->r_info = 0;
|
| 733 |
|
|
rel->r_addend = 0;
|
| 734 |
|
|
continue;
|
| 735 |
|
|
}
|
| 736 |
|
|
|
| 737 |
|
|
if (info->relocatable)
|
| 738 |
|
|
{
|
| 739 |
|
|
/* This is a relocatable link. We don't have to change
|
| 740 |
|
|
anything, unless the reloc is against a section symbol,
|
| 741 |
|
|
in which case we have to adjust according to where the
|
| 742 |
|
|
section symbol winds up in the output section. */
|
| 743 |
|
|
if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
| 744 |
|
|
rel->r_addend += sec->output_offset;
|
| 745 |
|
|
continue;
|
| 746 |
|
|
}
|
| 747 |
|
|
|
| 748 |
|
|
r = cr16c_elf_final_link_relocate (howto, input_bfd, output_bfd,
|
| 749 |
|
|
input_section,
|
| 750 |
|
|
contents, rel->r_offset,
|
| 751 |
|
|
relocation, rel->r_addend,
|
| 752 |
|
|
info, sec, h == NULL);
|
| 753 |
|
|
|
| 754 |
|
|
if (r != bfd_reloc_ok)
|
| 755 |
|
|
{
|
| 756 |
|
|
const char *name;
|
| 757 |
|
|
const char *msg = (const char *) 0;
|
| 758 |
|
|
|
| 759 |
|
|
if (h != NULL)
|
| 760 |
|
|
name = h->root.root.string;
|
| 761 |
|
|
else
|
| 762 |
|
|
{
|
| 763 |
|
|
name = (bfd_elf_string_from_elf_section
|
| 764 |
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name));
|
| 765 |
|
|
if (name == NULL || *name == '\0')
|
| 766 |
|
|
name = bfd_section_name (input_bfd, sec);
|
| 767 |
|
|
}
|
| 768 |
|
|
|
| 769 |
|
|
switch (r)
|
| 770 |
|
|
{
|
| 771 |
|
|
case bfd_reloc_overflow:
|
| 772 |
|
|
if (!((*info->callbacks->reloc_overflow)
|
| 773 |
|
|
(info, (h ? &h->root : NULL), name, howto->name,
|
| 774 |
|
|
(bfd_vma) 0, input_bfd, input_section,
|
| 775 |
|
|
rel->r_offset)))
|
| 776 |
|
|
return FALSE;
|
| 777 |
|
|
break;
|
| 778 |
|
|
|
| 779 |
|
|
case bfd_reloc_undefined:
|
| 780 |
|
|
if (!((*info->callbacks->undefined_symbol)
|
| 781 |
|
|
(info, name, input_bfd, input_section,
|
| 782 |
|
|
rel->r_offset, TRUE)))
|
| 783 |
|
|
return FALSE;
|
| 784 |
|
|
break;
|
| 785 |
|
|
|
| 786 |
|
|
case bfd_reloc_outofrange:
|
| 787 |
|
|
msg = _("internal error: out of range error");
|
| 788 |
|
|
goto common_error;
|
| 789 |
|
|
|
| 790 |
|
|
case bfd_reloc_notsupported:
|
| 791 |
|
|
msg = _("internal error: unsupported relocation error");
|
| 792 |
|
|
goto common_error;
|
| 793 |
|
|
|
| 794 |
|
|
case bfd_reloc_dangerous:
|
| 795 |
|
|
msg = _("internal error: dangerous error");
|
| 796 |
|
|
goto common_error;
|
| 797 |
|
|
|
| 798 |
|
|
default:
|
| 799 |
|
|
msg = _("internal error: unknown error");
|
| 800 |
|
|
/* fall through */
|
| 801 |
|
|
|
| 802 |
|
|
common_error:
|
| 803 |
|
|
if (!((*info->callbacks->warning)
|
| 804 |
|
|
(info, msg, name, input_bfd, input_section,
|
| 805 |
|
|
rel->r_offset)))
|
| 806 |
|
|
return FALSE;
|
| 807 |
|
|
break;
|
| 808 |
|
|
}
|
| 809 |
|
|
}
|
| 810 |
|
|
}
|
| 811 |
|
|
|
| 812 |
|
|
return TRUE;
|
| 813 |
|
|
}
|
| 814 |
|
|
|
| 815 |
|
|
/* CR16C ELF uses three common sections:
|
| 816 |
|
|
One is for default common symbols (placed in usual common section).
|
| 817 |
|
|
Second is for near common symbols (placed in "ncommon" section).
|
| 818 |
|
|
Third is for far common symbols (placed in "fcommon" section).
|
| 819 |
|
|
The following implementation is based on elf32-mips architecture */
|
| 820 |
|
|
|
| 821 |
|
|
static asection cr16c_elf_fcom_section;
|
| 822 |
|
|
static asymbol cr16c_elf_fcom_symbol;
|
| 823 |
|
|
static asymbol * cr16c_elf_fcom_symbol_ptr;
|
| 824 |
|
|
static asection cr16c_elf_ncom_section;
|
| 825 |
|
|
static asymbol cr16c_elf_ncom_symbol;
|
| 826 |
|
|
static asymbol * cr16c_elf_ncom_symbol_ptr;
|
| 827 |
|
|
|
| 828 |
|
|
/* Given a BFD section, try to locate the
|
| 829 |
|
|
corresponding ELF section index. */
|
| 830 |
|
|
|
| 831 |
|
|
static bfd_boolean
|
| 832 |
|
|
elf32_cr16c_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
|
| 833 |
|
|
asection *sec,
|
| 834 |
|
|
int *retval)
|
| 835 |
|
|
{
|
| 836 |
|
|
if (strcmp (bfd_get_section_name (abfd, sec), ".fcommon") == 0)
|
| 837 |
|
|
*retval = SHN_CR16C_FCOMMON;
|
| 838 |
|
|
else if (strcmp (bfd_get_section_name (abfd, sec), ".ncommon") == 0)
|
| 839 |
|
|
*retval = SHN_CR16C_NCOMMON;
|
| 840 |
|
|
else
|
| 841 |
|
|
return FALSE;
|
| 842 |
|
|
|
| 843 |
|
|
return TRUE;
|
| 844 |
|
|
}
|
| 845 |
|
|
|
| 846 |
|
|
/* Handle the special CR16C section numbers that a symbol may use. */
|
| 847 |
|
|
|
| 848 |
|
|
static void
|
| 849 |
|
|
elf32_cr16c_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
|
| 850 |
|
|
asymbol *asym)
|
| 851 |
|
|
{
|
| 852 |
|
|
elf_symbol_type *elfsym = (elf_symbol_type *) asym;
|
| 853 |
|
|
unsigned int indx;
|
| 854 |
|
|
|
| 855 |
|
|
indx = elfsym->internal_elf_sym.st_shndx;
|
| 856 |
|
|
|
| 857 |
|
|
switch (indx)
|
| 858 |
|
|
{
|
| 859 |
|
|
case SHN_CR16C_FCOMMON:
|
| 860 |
|
|
if (cr16c_elf_fcom_section.name == NULL)
|
| 861 |
|
|
{
|
| 862 |
|
|
/* Initialize the far common section. */
|
| 863 |
|
|
cr16c_elf_fcom_section.name = ".fcommon";
|
| 864 |
|
|
cr16c_elf_fcom_section.flags = SEC_IS_COMMON | SEC_ALLOC;
|
| 865 |
|
|
cr16c_elf_fcom_section.output_section = &cr16c_elf_fcom_section;
|
| 866 |
|
|
cr16c_elf_fcom_section.symbol = &cr16c_elf_fcom_symbol;
|
| 867 |
|
|
cr16c_elf_fcom_section.symbol_ptr_ptr = &cr16c_elf_fcom_symbol_ptr;
|
| 868 |
|
|
cr16c_elf_fcom_symbol.name = ".fcommon";
|
| 869 |
|
|
cr16c_elf_fcom_symbol.flags = BSF_SECTION_SYM;
|
| 870 |
|
|
cr16c_elf_fcom_symbol.section = &cr16c_elf_fcom_section;
|
| 871 |
|
|
cr16c_elf_fcom_symbol_ptr = &cr16c_elf_fcom_symbol;
|
| 872 |
|
|
}
|
| 873 |
|
|
asym->section = &cr16c_elf_fcom_section;
|
| 874 |
|
|
asym->value = elfsym->internal_elf_sym.st_size;
|
| 875 |
|
|
break;
|
| 876 |
|
|
case SHN_CR16C_NCOMMON:
|
| 877 |
|
|
if (cr16c_elf_ncom_section.name == NULL)
|
| 878 |
|
|
{
|
| 879 |
|
|
/* Initialize the far common section. */
|
| 880 |
|
|
cr16c_elf_ncom_section.name = ".ncommon";
|
| 881 |
|
|
cr16c_elf_ncom_section.flags = SEC_IS_COMMON | SEC_ALLOC;
|
| 882 |
|
|
cr16c_elf_ncom_section.output_section = &cr16c_elf_ncom_section;
|
| 883 |
|
|
cr16c_elf_ncom_section.symbol = &cr16c_elf_ncom_symbol;
|
| 884 |
|
|
cr16c_elf_ncom_section.symbol_ptr_ptr = &cr16c_elf_ncom_symbol_ptr;
|
| 885 |
|
|
cr16c_elf_ncom_symbol.name = ".ncommon";
|
| 886 |
|
|
cr16c_elf_ncom_symbol.flags = BSF_SECTION_SYM;
|
| 887 |
|
|
cr16c_elf_ncom_symbol.section = &cr16c_elf_ncom_section;
|
| 888 |
|
|
cr16c_elf_ncom_symbol_ptr = &cr16c_elf_ncom_symbol;
|
| 889 |
|
|
}
|
| 890 |
|
|
asym->section = &cr16c_elf_ncom_section;
|
| 891 |
|
|
asym->value = elfsym->internal_elf_sym.st_size;
|
| 892 |
|
|
break;
|
| 893 |
|
|
}
|
| 894 |
|
|
}
|
| 895 |
|
|
|
| 896 |
|
|
/* Hook called by the linker routine which adds symbols from an object
|
| 897 |
|
|
file. We must handle the special cr16c section numbers here. */
|
| 898 |
|
|
|
| 899 |
|
|
static bfd_boolean
|
| 900 |
|
|
elf32_cr16c_add_symbol_hook (bfd *abfd,
|
| 901 |
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
| 902 |
|
|
Elf_Internal_Sym *sym,
|
| 903 |
|
|
const char **namep ATTRIBUTE_UNUSED,
|
| 904 |
|
|
flagword *flagsp ATTRIBUTE_UNUSED,
|
| 905 |
|
|
asection **secp,
|
| 906 |
|
|
bfd_vma *valp)
|
| 907 |
|
|
{
|
| 908 |
|
|
unsigned int indx = sym->st_shndx;
|
| 909 |
|
|
|
| 910 |
|
|
switch (indx)
|
| 911 |
|
|
{
|
| 912 |
|
|
case SHN_CR16C_FCOMMON:
|
| 913 |
|
|
*secp = bfd_make_section_old_way (abfd, ".fcommon");
|
| 914 |
|
|
(*secp)->flags |= SEC_IS_COMMON;
|
| 915 |
|
|
*valp = sym->st_size;
|
| 916 |
|
|
break;
|
| 917 |
|
|
case SHN_CR16C_NCOMMON:
|
| 918 |
|
|
*secp = bfd_make_section_old_way (abfd, ".ncommon");
|
| 919 |
|
|
(*secp)->flags |= SEC_IS_COMMON;
|
| 920 |
|
|
*valp = sym->st_size;
|
| 921 |
|
|
break;
|
| 922 |
|
|
}
|
| 923 |
|
|
|
| 924 |
|
|
return TRUE;
|
| 925 |
|
|
}
|
| 926 |
|
|
|
| 927 |
|
|
static int
|
| 928 |
|
|
elf32_cr16c_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
| 929 |
|
|
const char *name ATTRIBUTE_UNUSED,
|
| 930 |
|
|
Elf_Internal_Sym *sym,
|
| 931 |
|
|
asection *input_sec,
|
| 932 |
|
|
struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
|
| 933 |
|
|
{
|
| 934 |
|
|
/* If we see a common symbol, which implies a relocatable link, then
|
| 935 |
|
|
if a symbol was in a special common section in an input file, mark
|
| 936 |
|
|
it as a special common in the output file. */
|
| 937 |
|
|
|
| 938 |
|
|
if (sym->st_shndx == SHN_COMMON)
|
| 939 |
|
|
{
|
| 940 |
|
|
if (strcmp (input_sec->name, ".fcommon") == 0)
|
| 941 |
|
|
sym->st_shndx = SHN_CR16C_FCOMMON;
|
| 942 |
|
|
else if (strcmp (input_sec->name, ".ncommon") == 0)
|
| 943 |
|
|
sym->st_shndx = SHN_CR16C_NCOMMON;
|
| 944 |
|
|
}
|
| 945 |
|
|
|
| 946 |
|
|
return 1;
|
| 947 |
|
|
}
|
| 948 |
|
|
|
| 949 |
|
|
/* Definitions for setting CR16C target vector. */
|
| 950 |
|
|
#define TARGET_LITTLE_SYM bfd_elf32_cr16c_vec
|
| 951 |
|
|
#define TARGET_LITTLE_NAME "elf32-cr16c"
|
| 952 |
|
|
#define ELF_ARCH bfd_arch_cr16c
|
| 953 |
|
|
#define ELF_MACHINE_CODE EM_CR
|
| 954 |
|
|
#define ELF_MAXPAGESIZE 0x1
|
| 955 |
|
|
#define elf_symbol_leading_char '_'
|
| 956 |
|
|
|
| 957 |
|
|
#define bfd_elf32_bfd_reloc_type_lookup elf_cr16c_reloc_type_lookup
|
| 958 |
|
|
#define bfd_elf32_bfd_reloc_name_lookup elf_cr16c_reloc_name_lookup
|
| 959 |
|
|
#define elf_info_to_howto elf_cr16c_info_to_howto
|
| 960 |
|
|
#define elf_info_to_howto_rel elf_cr16c_info_to_howto_rel
|
| 961 |
|
|
#define elf_backend_relocate_section elf32_cr16c_relocate_section
|
| 962 |
|
|
#define elf_backend_symbol_processing elf32_cr16c_symbol_processing
|
| 963 |
|
|
#define elf_backend_section_from_bfd_section elf32_cr16c_section_from_bfd_section
|
| 964 |
|
|
#define elf_backend_add_symbol_hook elf32_cr16c_add_symbol_hook
|
| 965 |
|
|
#define elf_backend_link_output_symbol_hook elf32_cr16c_link_output_symbol_hook
|
| 966 |
|
|
|
| 967 |
|
|
#define elf_backend_can_gc_sections 1
|
| 968 |
|
|
|
| 969 |
|
|
#include "elf32-target.h"
|
