include/elf/sh.h

   1 /* SH ELF support for BFD.
   2    Copyright 1998, 2000, 2001, 2002 Free Software Foundation, Inc.
   3
   4    This file is part of BFD, the Binary File Descriptor library.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software Foundation,
  18    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  19
  20 #ifndef _ELF_SH_H
  21 #define _ELF_SH_H
  22
  23 /* Processor specific flags for the ELF header e_flags field.  */
  24
  25 #define EF_SH_MACH_MASK 0x1f
  26 #define EF_SH_UNKNOWN      0 /* For backwards compatibility.  */
  27 #define EF_SH1             1
  28 #define EF_SH2             2
  29 #define EF_SH3             3
  30 #define EF_SH_HAS_DSP(flags) ((flags) & 4)
  31 #define EF_SH_DSP          4
  32 #define EF_SH3_DSP         5
  33 #define EF_SH_HAS_FP(flags) ((flags) & 8)
  34 #define EF_SH3E            8
  35 #define EF_SH4             9
  36
  37 /* This one can only mix in objects from other EF_SH5 objects.  */
  38 #define EF_SH5            10
  39
  40 #define EF_SH_MERGE_MACH(mach1, mach2) \
  41   (((((mach1) == EF_SH3 || (mach1) == EF_SH_UNKNOWN) && (mach2) == EF_SH_DSP) \
  42     || ((mach1) == EF_SH_DSP \
  43         && ((mach2) == EF_SH3 || (mach2) == EF_SH_UNKNOWN))) \
  44    ? EF_SH3_DSP \
  45    : (((mach1) < EF_SH3 && (mach2) == EF_SH_UNKNOWN) \
  46       || ((mach2) < EF_SH3 && (mach1) == EF_SH_UNKNOWN)) \
  47    ? EF_SH3 \
  48    : (((mach1) == EF_SH3E && (mach2) == EF_SH_UNKNOWN) \
  49       || ((mach2) == EF_SH3E && (mach1) == EF_SH_UNKNOWN)) \
  50    ? EF_SH4 \
  51    : ((mach1) > (mach2) ? (mach1) : (mach2)))
  52
  53 /* Flags for the st_other symbol field.
  54    Keep away from the STV_ visibility flags (bit 0..1).  */
  55
  56 /* A reference to this symbol should by default add 1.  */
  57 #define STO_SH5_ISA32 (1 << 2)
  58
  59 /* Section contains only SHmedia code (no SHcompact code).  */
  60 #define SHF_SH5_ISA32           0x40000000
  61
  62 /* Section contains both SHmedia and SHcompact code, and possibly also
  63    constants.  */
  64 #define SHF_SH5_ISA32_MIXED     0x20000000
  65
  66 /* If applied to a .cranges section, marks that the section is sorted by
  67    increasing cr_addr values.  */
  68 #define SHT_SH5_CR_SORTED 0x80000001
  69
  70 /* Symbol should be handled as DataLabel (attached to global SHN_UNDEF
  71    symbols).  */
  72 #define STT_DATALABEL STT_LOPROC
  73
  74 #define SH64_CRANGES_SECTION_NAME ".cranges"
  75 enum sh64_elf_cr_type {
  76   CRT_NONE = 0,
  77   CRT_DATA = 1,
  78   CRT_SH5_ISA16 = 2,
  79   CRT_SH5_ISA32 = 3
  80 };
  81
  82 /* The official definition is this:
  83
  84     typedef struct {
  85       Elf32_Addr cr_addr;
  86       Elf32_Word cr_size;
  87       Elf32_Half cr_type;
  88     } Elf32_CRange;
  89
  90    but we have no use for that exact type.  Instead we use this struct for
  91    the internal representation.  */
  92 typedef struct {
  93   bfd_vma cr_addr;
  94   bfd_size_type cr_size;
  95   enum sh64_elf_cr_type cr_type;
  96 } sh64_elf_crange;
  97
  98 #define SH64_CRANGE_SIZE (4 + 4 + 2)
  99 #define SH64_CRANGE_CR_ADDR_OFFSET 0
 100 #define SH64_CRANGE_CR_SIZE_OFFSET 4
 101 #define SH64_CRANGE_CR_TYPE_OFFSET (4 + 4)
 102
 103 /* Get the contents type of an arbitrary address, or return CRT_NONE.  */
 104 extern enum sh64_elf_cr_type sh64_get_contents_type
 105   PARAMS ((asection *, bfd_vma, sh64_elf_crange *));
 106
 107 /* Simpler interface.
 108    FIXME: This seems redundant now that we export the interface above.  */
 109 extern boolean sh64_address_is_shmedia PARAMS ((asection *, bfd_vma));
 110
 111 /* We put this in elf_section_data (section)->tdata.  */
 112 struct sh64_section_data
 113 {
 114   flagword contents_flags;
 115
 116   /* Only used in the cranges section, but we don't have an official
 117      backend-specific bfd field.  */
 118   bfd_size_type cranges_growth;
 119 };
 120
 121 #define sh64_elf_section_data(sec) \
 122   ((struct sh64_section_data *) ((elf_section_data (sec))->tdata))
 123
 124 #include "elf/reloc-macros.h"
 125
 126 /* Relocations.  */
 127 /* Relocations 25ff are GNU extensions.
 128    25..33 are used for relaxation and use the same constants as COFF uses.  */
 129 START_RELOC_NUMBERS (elf_sh_reloc_type)
 130   RELOC_NUMBER (R_SH_NONE, 0)
 131   RELOC_NUMBER (R_SH_DIR32, 1)
 132   RELOC_NUMBER (R_SH_REL32, 2)
 133   RELOC_NUMBER (R_SH_DIR8WPN, 3)
 134   RELOC_NUMBER (R_SH_IND12W, 4)
 135   RELOC_NUMBER (R_SH_DIR8WPL, 5)
 136   RELOC_NUMBER (R_SH_DIR8WPZ, 6)
 137   RELOC_NUMBER (R_SH_DIR8BP, 7)
 138   RELOC_NUMBER (R_SH_DIR8W, 8)
 139   RELOC_NUMBER (R_SH_DIR8L, 9)
 140   FAKE_RELOC (R_SH_FIRST_INVALID_RELOC, 10)
 141   FAKE_RELOC (R_SH_LAST_INVALID_RELOC, 24)
 142   RELOC_NUMBER (R_SH_SWITCH16, 25)
 143   RELOC_NUMBER (R_SH_SWITCH32, 26)
 144   RELOC_NUMBER (R_SH_USES, 27)
 145   RELOC_NUMBER (R_SH_COUNT, 28)
 146   RELOC_NUMBER (R_SH_ALIGN, 29)
 147   RELOC_NUMBER (R_SH_CODE, 30)
 148   RELOC_NUMBER (R_SH_DATA, 31)
 149   RELOC_NUMBER (R_SH_LABEL, 32)
 150   RELOC_NUMBER (R_SH_SWITCH8, 33)
 151   RELOC_NUMBER (R_SH_GNU_VTINHERIT, 34)
 152   RELOC_NUMBER (R_SH_GNU_VTENTRY, 35)
 153   RELOC_NUMBER (R_SH_LOOP_START, 36)
 154   RELOC_NUMBER (R_SH_LOOP_END, 37)
 155   FAKE_RELOC (R_SH_FIRST_INVALID_RELOC_2, 38)
 156   FAKE_RELOC (R_SH_LAST_INVALID_RELOC_2, 44)
 157   RELOC_NUMBER (R_SH_DIR5U, 45)
 158   RELOC_NUMBER (R_SH_DIR6U, 46)
 159   RELOC_NUMBER (R_SH_DIR6S, 47)
 160   RELOC_NUMBER (R_SH_DIR10S, 48)
 161   RELOC_NUMBER (R_SH_DIR10SW, 49)
 162   RELOC_NUMBER (R_SH_DIR10SL, 50)
 163   RELOC_NUMBER (R_SH_DIR10SQ, 51)
 164   FAKE_RELOC (R_SH_FIRST_INVALID_RELOC_3, 52)
 165   FAKE_RELOC (R_SH_LAST_INVALID_RELOC_3, 159)
 166   RELOC_NUMBER (R_SH_GOT32, 160)
 167   RELOC_NUMBER (R_SH_PLT32, 161)
 168   RELOC_NUMBER (R_SH_COPY, 162)
 169   RELOC_NUMBER (R_SH_GLOB_DAT, 163)
 170   RELOC_NUMBER (R_SH_JMP_SLOT, 164)
 171   RELOC_NUMBER (R_SH_RELATIVE, 165)
 172   RELOC_NUMBER (R_SH_GOTOFF, 166)
 173   RELOC_NUMBER (R_SH_GOTPC, 167)
 174   RELOC_NUMBER (R_SH_GOTPLT32, 168)
 175   RELOC_NUMBER (R_SH_GOT_LOW16, 169)
 176   RELOC_NUMBER (R_SH_GOT_MEDLOW16, 170)
 177   RELOC_NUMBER (R_SH_GOT_MEDHI16, 171)
 178   RELOC_NUMBER (R_SH_GOT_HI16, 172)
 179   RELOC_NUMBER (R_SH_GOTPLT_LOW16, 173)
 180   RELOC_NUMBER (R_SH_GOTPLT_MEDLOW16, 174)
 181   RELOC_NUMBER (R_SH_GOTPLT_MEDHI16, 175)
 182   RELOC_NUMBER (R_SH_GOTPLT_HI16, 176)
 183   RELOC_NUMBER (R_SH_PLT_LOW16, 177)
 184   RELOC_NUMBER (R_SH_PLT_MEDLOW16, 178)
 185   RELOC_NUMBER (R_SH_PLT_MEDHI16, 179)
 186   RELOC_NUMBER (R_SH_PLT_HI16, 180)
 187   RELOC_NUMBER (R_SH_GOTOFF_LOW16, 181)
 188   RELOC_NUMBER (R_SH_GOTOFF_MEDLOW16, 182)
 189   RELOC_NUMBER (R_SH_GOTOFF_MEDHI16, 183)
 190   RELOC_NUMBER (R_SH_GOTOFF_HI16, 184)
 191   RELOC_NUMBER (R_SH_GOTPC_LOW16, 185)
 192   RELOC_NUMBER (R_SH_GOTPC_MEDLOW16, 186)
 193   RELOC_NUMBER (R_SH_GOTPC_MEDHI16, 187)
 194   RELOC_NUMBER (R_SH_GOTPC_HI16, 188)
 195   RELOC_NUMBER (R_SH_GOT10BY4, 189)
 196   RELOC_NUMBER (R_SH_GOTPLT10BY4, 190)
 197   RELOC_NUMBER (R_SH_GOT10BY8, 191)
 198   RELOC_NUMBER (R_SH_GOTPLT10BY8, 192)
 199   RELOC_NUMBER (R_SH_COPY64, 193)
 200   RELOC_NUMBER (R_SH_GLOB_DAT64, 194)
 201   RELOC_NUMBER (R_SH_JMP_SLOT64, 195)
 202   RELOC_NUMBER (R_SH_RELATIVE64, 196)
 203   FAKE_RELOC (R_SH_FIRST_INVALID_RELOC_4, 197)
 204   FAKE_RELOC (R_SH_LAST_INVALID_RELOC_4, 241)
 205   RELOC_NUMBER (R_SH_SHMEDIA_CODE, 242)
 206   RELOC_NUMBER (R_SH_PT_16, 243)
 207   RELOC_NUMBER (R_SH_IMMS16, 244)
 208   RELOC_NUMBER (R_SH_IMMU16, 245)
 209   RELOC_NUMBER (R_SH_IMM_LOW16, 246)
 210   RELOC_NUMBER (R_SH_IMM_LOW16_PCREL, 247)
 211   RELOC_NUMBER (R_SH_IMM_MEDLOW16, 248)
 212   RELOC_NUMBER (R_SH_IMM_MEDLOW16_PCREL, 249)
 213   RELOC_NUMBER (R_SH_IMM_MEDHI16, 250)
 214   RELOC_NUMBER (R_SH_IMM_MEDHI16_PCREL, 251)
 215   RELOC_NUMBER (R_SH_IMM_HI16, 252)
 216   RELOC_NUMBER (R_SH_IMM_HI16_PCREL, 253)
 217   RELOC_NUMBER (R_SH_64, 254)
 218   RELOC_NUMBER (R_SH_64_PCREL, 255)
 219 END_RELOC_NUMBERS (R_SH_max)
 220
 221 #endif