| 1 | /* BFD back-end for Sparc COFF files. |
| 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001, |
| 3 | 2002, 2003, 2005, 2007 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 3 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., 51 Franklin Street - Fifth Floor, Boston, |
| 21 | MA 02110-1301, USA. */ |
| 22 | |
| 23 | #include "sysdep.h" |
| 24 | #include "bfd.h" |
| 25 | #include "libbfd.h" |
| 26 | #include "coff/sparc.h" |
| 27 | #include "coff/internal.h" |
| 28 | #include "libcoff.h" |
| 29 | |
| 30 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3) |
| 31 | |
| 32 | #define BADMAG(x) ((x).f_magic != SPARCMAGIC && (x).f_magic != LYNXCOFFMAGIC) |
| 33 | |
| 34 | /* The page size is a guess based on ELF. */ |
| 35 | #define COFF_PAGE_SIZE 0x10000 |
| 36 | |
| 37 | |
| 38 | static reloc_howto_type *coff_sparc_reloc_type_lookup |
| 39 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| 40 | static void rtype2howto PARAMS ((arelent *, struct internal_reloc *)); |
| 41 | |
| 42 | enum reloc_type |
| 43 | { |
| 44 | R_SPARC_NONE = 0, |
| 45 | R_SPARC_8, R_SPARC_16, R_SPARC_32, |
| 46 | R_SPARC_DISP8, R_SPARC_DISP16, R_SPARC_DISP32, |
| 47 | R_SPARC_WDISP30, R_SPARC_WDISP22, |
| 48 | R_SPARC_HI22, R_SPARC_22, |
| 49 | R_SPARC_13, R_SPARC_LO10, |
| 50 | R_SPARC_GOT10, R_SPARC_GOT13, R_SPARC_GOT22, |
| 51 | R_SPARC_PC10, R_SPARC_PC22, |
| 52 | R_SPARC_WPLT30, |
| 53 | R_SPARC_COPY, |
| 54 | R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT, |
| 55 | R_SPARC_RELATIVE, |
| 56 | R_SPARC_UA32, |
| 57 | R_SPARC_max |
| 58 | }; |
| 59 | |
| 60 | /* This is stolen pretty directly from elf.c. */ |
| 61 | static bfd_reloc_status_type |
| 62 | bfd_coff_generic_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, |
| 63 | asection *, bfd *, char **)); |
| 64 | |
| 65 | static bfd_reloc_status_type |
| 66 | bfd_coff_generic_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 67 | output_bfd, error_message) |
| 68 | bfd *abfd ATTRIBUTE_UNUSED; |
| 69 | arelent *reloc_entry; |
| 70 | asymbol *symbol; |
| 71 | PTR data ATTRIBUTE_UNUSED; |
| 72 | asection *input_section; |
| 73 | bfd *output_bfd; |
| 74 | char **error_message ATTRIBUTE_UNUSED; |
| 75 | { |
| 76 | if (output_bfd != (bfd *) NULL |
| 77 | && (symbol->flags & BSF_SECTION_SYM) == 0) |
| 78 | { |
| 79 | reloc_entry->address += input_section->output_offset; |
| 80 | return bfd_reloc_ok; |
| 81 | } |
| 82 | |
| 83 | return bfd_reloc_continue; |
| 84 | } |
| 85 | |
| 86 | static reloc_howto_type coff_sparc_howto_table[] = |
| 87 | { |
| 88 | HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_NONE", FALSE,0,0x00000000,TRUE), |
| 89 | HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_8", FALSE,0,0x000000ff,TRUE), |
| 90 | HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_16", FALSE,0,0x0000ffff,TRUE), |
| 91 | HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_32", FALSE,0,0xffffffff,TRUE), |
| 92 | HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE), |
| 93 | HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE), |
| 94 | HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_DISP32", FALSE,0,0x00ffffff,TRUE), |
| 95 | HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE), |
| 96 | HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_coff_generic_reloc,"R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE), |
| 97 | HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_HI22", FALSE,0,0x003fffff,TRUE), |
| 98 | HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_22", FALSE,0,0x003fffff,TRUE), |
| 99 | HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_13", FALSE,0,0x00001fff,TRUE), |
| 100 | HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_LO10", FALSE,0,0x000003ff,TRUE), |
| 101 | HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE), |
| 102 | HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE), |
| 103 | HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE), |
| 104 | HOWTO(R_SPARC_PC10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC10", FALSE,0,0x000003ff,TRUE), |
| 105 | HOWTO(R_SPARC_PC22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC22", FALSE,0,0x003fffff,TRUE), |
| 106 | HOWTO(R_SPARC_WPLT30, 0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_WPLT30", FALSE,0,0x00000000,TRUE), |
| 107 | HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_COPY", FALSE,0,0x00000000,TRUE), |
| 108 | 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), |
| 109 | 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), |
| 110 | HOWTO(R_SPARC_RELATIVE,0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE), |
| 111 | HOWTO(R_SPARC_UA32, 0,0,00,FALSE,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_UA32", FALSE,0,0x00000000,TRUE), |
| 112 | }; |
| 113 | |
| 114 | struct coff_reloc_map { |
| 115 | bfd_reloc_code_real_type bfd_reloc_val; |
| 116 | unsigned char coff_reloc_val; |
| 117 | }; |
| 118 | |
| 119 | static const struct coff_reloc_map sparc_reloc_map[] = |
| 120 | { |
| 121 | { BFD_RELOC_NONE, R_SPARC_NONE, }, |
| 122 | { BFD_RELOC_16, R_SPARC_16, }, |
| 123 | { BFD_RELOC_8, R_SPARC_8 }, |
| 124 | { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, |
| 125 | { BFD_RELOC_CTOR, R_SPARC_32 }, /* @@ Assumes 32 bits. */ |
| 126 | { BFD_RELOC_32, R_SPARC_32 }, |
| 127 | { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, |
| 128 | { BFD_RELOC_HI22, R_SPARC_HI22 }, |
| 129 | { BFD_RELOC_LO10, R_SPARC_LO10, }, |
| 130 | { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, |
| 131 | { BFD_RELOC_SPARC22, R_SPARC_22 }, |
| 132 | { BFD_RELOC_SPARC13, R_SPARC_13 }, |
| 133 | { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, |
| 134 | { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, |
| 135 | { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, |
| 136 | { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, |
| 137 | { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, |
| 138 | { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, |
| 139 | { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, |
| 140 | { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, |
| 141 | { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, |
| 142 | { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, |
| 143 | { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, |
| 144 | /* { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */ |
| 145 | }; |
| 146 | |
| 147 | static reloc_howto_type * |
| 148 | coff_sparc_reloc_type_lookup (abfd, code) |
| 149 | bfd *abfd ATTRIBUTE_UNUSED; |
| 150 | bfd_reloc_code_real_type code; |
| 151 | { |
| 152 | unsigned int i; |
| 153 | for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct coff_reloc_map); i++) |
| 154 | { |
| 155 | if (sparc_reloc_map[i].bfd_reloc_val == code) |
| 156 | return &coff_sparc_howto_table[(int) sparc_reloc_map[i].coff_reloc_val]; |
| 157 | } |
| 158 | return 0; |
| 159 | } |
| 160 | #define coff_bfd_reloc_type_lookup coff_sparc_reloc_type_lookup |
| 161 | |
| 162 | static reloc_howto_type * |
| 163 | coff_sparc_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 164 | const char *r_name) |
| 165 | { |
| 166 | unsigned int i; |
| 167 | |
| 168 | for (i = 0; |
| 169 | i < (sizeof (coff_sparc_howto_table) |
| 170 | / sizeof (coff_sparc_howto_table[0])); |
| 171 | i++) |
| 172 | if (coff_sparc_howto_table[i].name != NULL |
| 173 | && strcasecmp (coff_sparc_howto_table[i].name, r_name) == 0) |
| 174 | return &coff_sparc_howto_table[i]; |
| 175 | |
| 176 | return NULL; |
| 177 | } |
| 178 | #define coff_bfd_reloc_name_lookup coff_sparc_reloc_name_lookup |
| 179 | |
| 180 | static void |
| 181 | rtype2howto (cache_ptr, dst) |
| 182 | arelent *cache_ptr; |
| 183 | struct internal_reloc *dst; |
| 184 | { |
| 185 | BFD_ASSERT (dst->r_type < (unsigned int) R_SPARC_max); |
| 186 | cache_ptr->howto = &coff_sparc_howto_table[dst->r_type]; |
| 187 | } |
| 188 | |
| 189 | #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) |
| 190 | |
| 191 | #define SWAP_IN_RELOC_OFFSET H_GET_32 |
| 192 | #define SWAP_OUT_RELOC_OFFSET H_PUT_32 |
| 193 | #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \ |
| 194 | cache_ptr->addend = reloc.r_offset; |
| 195 | |
| 196 | /* Clear the r_spare field in relocs. */ |
| 197 | #define SWAP_OUT_RELOC_EXTRA(abfd,src,dst) \ |
| 198 | do { \ |
| 199 | dst->r_spare[0] = 0; \ |
| 200 | dst->r_spare[1] = 0; \ |
| 201 | } while (0) |
| 202 | |
| 203 | #define __A_MAGIC_SET__ |
| 204 | |
| 205 | /* Enable Sparc-specific hacks in coffcode.h. */ |
| 206 | |
| 207 | #define COFF_SPARC |
| 208 | |
| 209 | #include "coffcode.h" |
| 210 | |
| 211 | #ifndef TARGET_SYM |
| 212 | #define TARGET_SYM sparccoff_vec |
| 213 | #endif |
| 214 | |
| 215 | #ifndef TARGET_NAME |
| 216 | #define TARGET_NAME "coff-sparc" |
| 217 | #endif |
| 218 | |
| 219 | CREATE_BIG_COFF_TARGET_VEC (TARGET_SYM, TARGET_NAME, D_PAGED, 0, '_', NULL, COFF_SWAP_TABLE) |