Home | History | Annotate | Download | only in elf
      1 /* TI C6X ELF support for BFD.
      2    Copyright (C) 2010-2014 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 3 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
     18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
     19    MA 02110-1301, USA.  */
     20 
     21 #ifndef _ELF_TIC6X_H
     22 #define _ELF_TIC6X_H
     23 
     24 #include "elf/reloc-macros.h"
     25 
     26 /* Relocation types.  */
     27 START_RELOC_NUMBERS (elf_tic6x_reloc_type)
     28   RELOC_NUMBER (R_C6000_NONE, 0)
     29   RELOC_NUMBER (R_C6000_ABS32, 1)
     30   RELOC_NUMBER (R_C6000_ABS16, 2)
     31   RELOC_NUMBER (R_C6000_ABS8, 3)
     32   RELOC_NUMBER (R_C6000_PCR_S21, 4)
     33   RELOC_NUMBER (R_C6000_PCR_S12, 5)
     34   RELOC_NUMBER (R_C6000_PCR_S10, 6)
     35   RELOC_NUMBER (R_C6000_PCR_S7, 7)
     36   RELOC_NUMBER (R_C6000_ABS_S16, 8)
     37   RELOC_NUMBER (R_C6000_ABS_L16, 9)
     38   RELOC_NUMBER (R_C6000_ABS_H16, 10)
     39   RELOC_NUMBER (R_C6000_SBR_U15_B, 11)
     40   RELOC_NUMBER (R_C6000_SBR_U15_H, 12)
     41   RELOC_NUMBER (R_C6000_SBR_U15_W, 13)
     42   RELOC_NUMBER (R_C6000_SBR_S16, 14)
     43   RELOC_NUMBER (R_C6000_SBR_L16_B, 15)
     44   RELOC_NUMBER (R_C6000_SBR_L16_H, 16)
     45   RELOC_NUMBER (R_C6000_SBR_L16_W, 17)
     46   RELOC_NUMBER (R_C6000_SBR_H16_B, 18)
     47   RELOC_NUMBER (R_C6000_SBR_H16_H, 19)
     48   RELOC_NUMBER (R_C6000_SBR_H16_W, 20)
     49   RELOC_NUMBER (R_C6000_SBR_GOT_U15_W, 21)
     50   RELOC_NUMBER (R_C6000_SBR_GOT_L16_W, 22)
     51   RELOC_NUMBER (R_C6000_SBR_GOT_H16_W, 23)
     52   RELOC_NUMBER (R_C6000_DSBT_INDEX, 24)
     53   RELOC_NUMBER (R_C6000_PREL31, 25)
     54   RELOC_NUMBER (R_C6000_COPY, 26)
     55   RELOC_NUMBER (R_C6000_JUMP_SLOT, 27)
     56   RELOC_NUMBER (R_C6000_EHTYPE, 28)
     57   RELOC_NUMBER (R_C6000_PCR_H16, 29)
     58   RELOC_NUMBER (R_C6000_PCR_L16, 30)
     59   RELOC_NUMBER (R_C6000_ALIGN, 253)
     60   RELOC_NUMBER (R_C6000_FPHEAD, 254)
     61   RELOC_NUMBER (R_C6000_NOCMP, 255)
     62 END_RELOC_NUMBERS (R_TIC6X_max)
     63 
     64 /* Processor-specific flags.  */
     65 
     66 /* File contains static relocation information.  */
     67 #define EF_C6000_REL		0x1
     68 
     69 /* Processor-specific section types.  */
     70 
     71 /* Unwind function table for stack unwinding.  */
     72 #define SHT_C6000_UNWIND	0x70000001
     73 
     74 /* DLL dynamic linking pre-emption map.  */
     75 #define SHT_C6000_PREEMPTMAP	0x70000002
     76 
     77 /* Object file compatibility attributes.  */
     78 #define SHT_C6000_ATTRIBUTES	0x70000003
     79 
     80 /* Intermediate code for link-time optimization.  */
     81 #define SHT_TI_ICODE		0x7F000000
     82 
     83 /* Symbolic cross reference information.  */
     84 #define SHT_TI_XREF		0x7F000001
     85 
     86 /* Reserved.  */
     87 #define SHT_TI_HANDLER		0x7F000002
     88 
     89 /* Compressed data for initializing C variables.  */
     90 #define SHT_TI_INITINFO		0x7F000003
     91 
     92 /* Extended program header attributes.  */
     93 #define SHT_TI_PHATTRS		0x7F000004
     94 
     95 /* Processor specific section indices.  These sections do not actually
     96    exist.  Symbols with a st_shndx field corresponding to one of these
     97    values have a special meaning.  */
     98 
     99 /* Small data area common symbol.  */
    100 #define SHN_TIC6X_SCOMMON	SHN_LORESERVE
    101 
    102 /* Processor-specific segment types.  */
    103 
    104 /* Extended Segment Attributes.  */
    105 #define PT_C6000_PHATTR		0x70000000
    106 
    107 /* Processor-specific dynamic tags.  */
    108 
    109 /* Undocumented.  */
    110 #define DT_C6000_GSYM_OFFSET	0x6000000D
    111 
    112 /* Undocumented.  */
    113 #define DT_C6000_GSTR_OFFSET	0x6000000F
    114 
    115 /* Statically linked base address of data segment.  */
    116 #define DT_C6000_DSBT_BASE	0x70000000
    117 
    118 /* Number of entries in this module's DSBT.  */
    119 #define DT_C6000_DSBT_SIZE	0x70000001
    120 
    121 /* Undocumented.  */
    122 #define DT_C6000_PREEMPTMAP	0x70000002
    123 
    124 /* The hard-coded DSBT index for this module, if any.  */
    125 #define DT_C6000_DSBT_INDEX	0x70000003
    126 
    127 /* Extended program header attributes.  */
    128 
    129 /* Terminate a segment.  */
    130 #define PHA_NULL		0x0
    131 
    132 /* Segment's address bound to the final address.  */
    133 #define PHA_BOUND		0x1
    134 
    135 /* Segment cannot be further relocated.  */
    136 #define PHA_READONLY		0x2
    137 
    138 /* Build attributes.  */
    139 enum
    140   {
    141 #define TAG(tag, value) tag = value,
    142 #include "elf/tic6x-attrs.h"
    143 #undef TAG
    144     Tag_C6XABI_last
    145   };
    146 
    147 /* Values for Tag_ISA.  GNU-specific names; the ABI does not specify
    148    names for these values.  */
    149 enum
    150   {
    151     C6XABI_Tag_ISA_none = 0,
    152     C6XABI_Tag_ISA_C62X = 1,
    153     C6XABI_Tag_ISA_C67X = 3,
    154     C6XABI_Tag_ISA_C67XP = 4,
    155     C6XABI_Tag_ISA_C64X = 6,
    156     C6XABI_Tag_ISA_C64XP = 7,
    157     C6XABI_Tag_ISA_C674X = 8
    158   };
    159 
    160 /* Special section names.  */
    161 #define ELF_STRING_C6000_unwind           ".c6xabi.exidx"
    162 #define ELF_STRING_C6000_unwind_info      ".c6xabi.extab"
    163 #define ELF_STRING_C6000_unwind_once      ".gnu.linkonce.c6xabi.exidx."
    164 #define ELF_STRING_C6000_unwind_info_once ".gnu.linkonce.c6xabi.extab."
    165 
    166 #endif /* _ELF_TIC6X_H */
    167