1 /* BFD back-end for Sparc COFF files. 2 Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 98, 1999 3 Free Software Foundation, Inc. 4 Written by Cygnus Support. 5 6 This file is part of BFD, the Binary File Descriptor library. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 21 22 #include "bfd.h" 23 #include "sysdep.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 36 enum 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 #if 0 55 static CONST char *CONST reloc_type_names[] = 56 { 57 "R_SPARC_NONE", 58 "R_SPARC_8", "R_SPARC_16", "R_SPARC_32", 59 "R_SPARC_DISP8", "R_SPARC_DISP16", "R_SPARC_DISP32", 60 "R_SPARC_WDISP30", "R_SPARC_WDISP22", 61 "R_SPARC_HI22", "R_SPARC_22", 62 "R_SPARC_13", "R_SPARC_LO10", 63 "R_SPARC_GOT10", "R_SPARC_GOT13", "R_SPARC_GOT22", 64 "R_SPARC_PC10", "R_SPARC_PC22", 65 "R_SPARC_WPLT30", 66 "R_SPARC_COPY", 67 "R_SPARC_GLOB_DAT", "R_SPARC_JMP_SLOT", 68 "R_SPARC_RELATIVE", 69 "R_SPARC_UA32", 70 }; 71 #endif 72 73 /* This is stolen pretty directly from elf.c. */ 74 static bfd_reloc_status_type 75 bfd_coff_generic_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, 76 asection *, bfd *, char **)); 77 78 static bfd_reloc_status_type 79 bfd_coff_generic_reloc (abfd, reloc_entry, symbol, data, input_section, 80 output_bfd, error_message) 81 bfd *abfd ATTRIBUTE_UNUSED; 82 arelent *reloc_entry; 83 asymbol *symbol; 84 PTR data ATTRIBUTE_UNUSED; 85 asection *input_section; 86 bfd *output_bfd; 87 char **error_message ATTRIBUTE_UNUSED; 88 { 89 if (output_bfd != (bfd *) NULL 90 && (symbol->flags & BSF_SECTION_SYM) == 0) 91 { 92 reloc_entry->address += input_section->output_offset; 93 return bfd_reloc_ok; 94 } 95 96 return bfd_reloc_continue; 97 } 98 99 static reloc_howto_type coff_sparc_howto_table[] = 100 { 101 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_NONE", false,0,0x00000000,true), 102 HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_8", false,0,0x000000ff,true), 103 HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_16", false,0,0x0000ffff,true), 104 HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_32", false,0,0xffffffff,true), 105 HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP8", false,0,0x000000ff,true), 106 HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP16", false,0,0x0000ffff,true), 107 HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP32", false,0,0x00ffffff,true), 108 HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_WDISP30", false,0,0x3fffffff,true), 109 HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_WDISP22", false,0,0x003fffff,true), 110 HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_HI22", false,0,0x003fffff,true), 111 HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_22", false,0,0x003fffff,true), 112 HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_13", false,0,0x00001fff,true), 113 HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_LO10", false,0,0x000003ff,true), 114 HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT10", false,0,0x000003ff,true), 115 HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT13", false,0,0x00001fff,true), 116 HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT22", false,0,0x003fffff,true), 117 HOWTO(R_SPARC_PC10, 0,2,10,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC10", false,0,0x000003ff,true), 118 HOWTO(R_SPARC_PC22, 0,2,22,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC22", false,0,0x003fffff,true), 119 HOWTO(R_SPARC_WPLT30, 0,0,00,false,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_WPLT30", false,0,0x00000000,true), 120 HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_COPY", false,0,0x00000000,true), 121 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), 122 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), 123 HOWTO(R_SPARC_RELATIVE,0,0,00,false,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_RELATIVE",false,0,0x00000000,true), 124 HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_UA32", false,0,0x00000000,true), 125 }; 126 127 struct coff_reloc_map { 128 bfd_reloc_code_real_type bfd_reloc_val; 129 unsigned char coff_reloc_val; 130 }; 131 132 static CONST struct coff_reloc_map sparc_reloc_map[] = 133 { 134 { BFD_RELOC_NONE, R_SPARC_NONE, }, 135 { BFD_RELOC_16, R_SPARC_16, }, 136 { BFD_RELOC_8, R_SPARC_8 }, 137 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, 138 { BFD_RELOC_CTOR, R_SPARC_32 }, /* @@ Assumes 32 bits. */ 139 { BFD_RELOC_32, R_SPARC_32 }, 140 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, 141 { BFD_RELOC_HI22, R_SPARC_HI22 }, 142 { BFD_RELOC_LO10, R_SPARC_LO10, }, 143 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, 144 { BFD_RELOC_SPARC22, R_SPARC_22 }, 145 { BFD_RELOC_SPARC13, R_SPARC_13 }, 146 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, 147 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, 148 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, 149 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, 150 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, 151 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, 152 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, 153 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, 154 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, 155 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, 156 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, 157 /* { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */ 158 }; 159 160 static reloc_howto_type * 161 coff_sparc_reloc_type_lookup (abfd, code) 162 bfd *abfd ATTRIBUTE_UNUSED; 163 bfd_reloc_code_real_type code; 164 { 165 unsigned int i; 166 for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct coff_reloc_map); i++) 167 { 168 if (sparc_reloc_map[i].bfd_reloc_val == code) 169 return &coff_sparc_howto_table[(int) sparc_reloc_map[i].coff_reloc_val]; 170 } 171 return 0; 172 } 173 #define coff_bfd_reloc_type_lookup coff_sparc_reloc_type_lookup 174 175 static void 176 rtype2howto (cache_ptr, dst) 177 arelent *cache_ptr; 178 struct internal_reloc *dst; 179 { 180 BFD_ASSERT (dst->r_type < (unsigned int) R_SPARC_max); 181 cache_ptr->howto = &coff_sparc_howto_table[dst->r_type]; 182 } 183 184 #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) 185 186 #define SWAP_IN_RELOC_OFFSET bfd_h_get_32 187 #define SWAP_OUT_RELOC_OFFSET bfd_h_put_32 188 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \ 189 cache_ptr->addend = reloc.r_offset; 190 191 /* Clear the r_spare field in relocs. */ 192 #define SWAP_OUT_RELOC_EXTRA(abfd,src,dst) \ 193 do { \ 194 dst->r_spare[0] = 0; \ 195 dst->r_spare[1] = 0; \ 196 } while (0) 197 198 #define __A_MAGIC_SET__ 199 200 /* Enable Sparc-specific hacks in coffcode.h. */ 201 202 #define COFF_SPARC 203 204 #include "coffcode.h" 205 206 #ifndef TARGET_SYM 207 #define TARGET_SYM sparccoff_vec 208 #endif 209 210 #ifndef TARGET_NAME 211 #define TARGET_NAME "coff-sparc" 212 #endif 213 214 CREATE_BIG_COFF_TARGET_VEC (TARGET_SYM, TARGET_NAME, D_PAGED, 0, '_', NULL) 215