1/* BFD back-end for Sparc COFF files. 2 Copyright (C) 1990-2017 Free Software Foundation, Inc. 3 Written by Cygnus Support. 4 5 This file is part of BFD, the Binary File Descriptor library. 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; if not, write to the Free Software 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 20 MA 02110-1301, USA. */ 21 22#include "sysdep.h" 23#include "bfd.h" 24#include "libbfd.h" 25#include "coff/sparc.h" 26#include "coff/internal.h" 27#include "libcoff.h" 28 29#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3) 30 31#define BADMAG(x) ((x).f_magic != SPARCMAGIC && (x).f_magic != LYNXCOFFMAGIC) 32 33/* The page size is a guess based on ELF. */ 34#define COFF_PAGE_SIZE 0x10000 35 36enum reloc_type 37 { 38 R_SPARC_NONE = 0, 39 R_SPARC_8, R_SPARC_16, R_SPARC_32, 40 R_SPARC_DISP8, R_SPARC_DISP16, R_SPARC_DISP32, 41 R_SPARC_WDISP30, R_SPARC_WDISP22, 42 R_SPARC_HI22, R_SPARC_22, 43 R_SPARC_13, R_SPARC_LO10, 44 R_SPARC_GOT10, R_SPARC_GOT13, R_SPARC_GOT22, 45 R_SPARC_PC10, R_SPARC_PC22, 46 R_SPARC_WPLT30, 47 R_SPARC_COPY, 48 R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT, 49 R_SPARC_RELATIVE, 50 R_SPARC_UA32, 51 R_SPARC_max 52 }; 53 54/* This is stolen pretty directly from elf.c. */ 55 56static bfd_reloc_status_type 57bfd_coff_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, 58 arelent *reloc_entry, 59 asymbol *symbol, 60 void * data ATTRIBUTE_UNUSED, 61 asection *input_section, 62 bfd *output_bfd, 63 char **error_message ATTRIBUTE_UNUSED) 64{ 65 if (output_bfd != (bfd *) NULL 66 && (symbol->flags & BSF_SECTION_SYM) == 0) 67 { 68 reloc_entry->address += input_section->output_offset; 69 return bfd_reloc_ok; 70 } 71 72 return bfd_reloc_continue; 73} 74 75static reloc_howto_type coff_sparc_howto_table[] = 76{ 77 HOWTO(R_SPARC_NONE, 0,3, 0,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 78 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_8", FALSE,0,0x000000ff,TRUE), 79 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_16", FALSE,0,0x0000ffff,TRUE), 80 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_32", FALSE,0,0xffffffff,TRUE), 81 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE), 82 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE), 83 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP32", FALSE,0,0x00ffffff,TRUE), 84 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE), 85 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE), 86 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_HI22", FALSE,0,0x003fffff,TRUE), 87 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_22", FALSE,0,0x003fffff,TRUE), 88 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_13", FALSE,0,0x00001fff,TRUE), 89 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_LO10", FALSE,0,0x000003ff,TRUE), 90 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE), 91 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE), 92 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE), 93 HOWTO(R_SPARC_PC10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC10", FALSE,0,0x000003ff,TRUE), 94 HOWTO(R_SPARC_PC22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC22", FALSE,0,0x003fffff,TRUE), 95 HOWTO(R_SPARC_WPLT30, 0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_WPLT30", FALSE,0,0x00000000,TRUE), 96 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_COPY", FALSE,0,0x00000000,TRUE), 97 HOWTO(R_SPARC_GLOB_DAT,0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE), 98 HOWTO(R_SPARC_JMP_SLOT,0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE), 99 HOWTO(R_SPARC_RELATIVE,0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE), 100 HOWTO(R_SPARC_UA32, 0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_UA32", FALSE,0,0x00000000,TRUE), 101}; 102 103struct coff_reloc_map 104{ 105 bfd_reloc_code_real_type bfd_reloc_val; 106 unsigned char coff_reloc_val; 107}; 108 109static const struct coff_reloc_map sparc_reloc_map[] = 110{ 111 { BFD_RELOC_NONE, R_SPARC_NONE, }, 112 { BFD_RELOC_16, R_SPARC_16, }, 113 { BFD_RELOC_8, R_SPARC_8 }, 114 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, 115 { BFD_RELOC_CTOR, R_SPARC_32 }, /* @@ Assumes 32 bits. */ 116 { BFD_RELOC_32, R_SPARC_32 }, 117 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, 118 { BFD_RELOC_HI22, R_SPARC_HI22 }, 119 { BFD_RELOC_LO10, R_SPARC_LO10, }, 120 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, 121 { BFD_RELOC_SPARC22, R_SPARC_22 }, 122 { BFD_RELOC_SPARC13, R_SPARC_13 }, 123 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, 124 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, 125 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, 126 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, 127 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, 128 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, 129 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, 130 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, 131 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, 132 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, 133 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, 134 /* { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */ 135}; 136 137static reloc_howto_type * 138coff_sparc_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 139 bfd_reloc_code_real_type code) 140{ 141 unsigned int i; 142 for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct coff_reloc_map); i++) 143 { 144 if (sparc_reloc_map[i].bfd_reloc_val == code) 145 return &coff_sparc_howto_table[(int) sparc_reloc_map[i].coff_reloc_val]; 146 } 147 return 0; 148} 149#define coff_bfd_reloc_type_lookup coff_sparc_reloc_type_lookup 150 151static reloc_howto_type * 152coff_sparc_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 153 const char *r_name) 154{ 155 unsigned int i; 156 157 for (i = 0; 158 i < (sizeof (coff_sparc_howto_table) 159 / sizeof (coff_sparc_howto_table[0])); 160 i++) 161 if (coff_sparc_howto_table[i].name != NULL 162 && strcasecmp (coff_sparc_howto_table[i].name, r_name) == 0) 163 return &coff_sparc_howto_table[i]; 164 165 return NULL; 166} 167#define coff_bfd_reloc_name_lookup coff_sparc_reloc_name_lookup 168 169static void 170rtype2howto (arelent *cache_ptr, struct internal_reloc *dst) 171{ 172 BFD_ASSERT (dst->r_type < (unsigned int) R_SPARC_max); 173 cache_ptr->howto = &coff_sparc_howto_table[dst->r_type]; 174} 175 176#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) 177 178#define SWAP_IN_RELOC_OFFSET H_GET_32 179#define SWAP_OUT_RELOC_OFFSET H_PUT_32 180#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \ 181 cache_ptr->addend = reloc.r_offset; 182 183/* Clear the r_spare field in relocs. */ 184#define SWAP_OUT_RELOC_EXTRA(abfd,src,dst) \ 185 do { \ 186 dst->r_spare[0] = 0; \ 187 dst->r_spare[1] = 0; \ 188 } while (0) 189 190#define __A_MAGIC_SET__ 191 192/* Enable Sparc-specific hacks in coffcode.h. */ 193 194#define COFF_SPARC 195 196#define bfd_pe_print_pdata NULL 197 198#include "coffcode.h" 199 200#ifndef TARGET_SYM 201#define TARGET_SYM sparc_coff_vec 202#endif 203 204#ifndef TARGET_NAME 205#define TARGET_NAME "coff-sparc" 206#endif 207 208CREATE_BIG_COFF_TARGET_VEC (TARGET_SYM, TARGET_NAME, D_PAGED, 0, '_', NULL, COFF_SWAP_TABLE) 209