include/elf/alpha.h

   1 /* ALPHA ELF support for BFD.
   2    Copyright (C) 1996-2020 Free Software Foundation, Inc.
   3
   4    By Eric Youngdale, <eric@aib.com>.  No processor supplement available
   5    for this platform.
   6
   7    This file is part of BFD, the Binary File Descriptor library.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  22    MA 02110-1301, USA.  */
  23
  24 /* This file holds definitions specific to the ALPHA ELF ABI.  Note
  25    that most of this is not actually implemented by BFD.  */
  26
  27 #ifndef _ELF_ALPHA_H
  28 #define _ELF_ALPHA_H
  29
  30 /* Processor specific flags for the ELF header e_flags field.  */
  31
  32 /* All addresses must be below 2GB.  */
  33 #define EF_ALPHA_32BIT          0x00000001
  34
  35 /* All relocations needed for relaxation with code movement are present.  */
  36 #define EF_ALPHA_CANRELAX       0x00000002
  37
  38 /* Processor specific section flags.  */
  39
  40 /* This section must be in the global data area.  */
  41 #define SHF_ALPHA_GPREL         0x10000000
  42
  43 /* Section contains some sort of debugging information.  The exact
  44    format is unspecified.  It's probably ECOFF symbols.  */
  45 #define SHT_ALPHA_DEBUG         0x70000001
  46
  47 /* Section contains register usage information.  */
  48 #define SHT_ALPHA_REGINFO       0x70000002
  49
  50 /* A section of type SHT_MIPS_REGINFO contains the following
  51    structure.  */
  52 typedef struct
  53 {
  54   /* Mask of general purpose registers used.  */
  55   unsigned long ri_gprmask;
  56   /* Mask of co-processor registers used.  */
  57   unsigned long ri_cprmask[4];
  58   /* GP register value for this object file.  */
  59   long ri_gp_value;
  60 } Elf64_RegInfo;
  61
  62 /* Special values for the st_other field in the symbol table.  */
  63
  64 #define STO_ALPHA_NOPV          0x80
  65 #define STO_ALPHA_STD_GPLOAD    0x88
  66
  67 /* Special values for Elf64_Dyn tag.  */
  68 #define DT_ALPHA_PLTRO          DT_LOPROC
  69
  70 #include "elf/reloc-macros.h"
  71
  72 /* Alpha relocs.  */
  73 START_RELOC_NUMBERS (elf_alpha_reloc_type)
  74   RELOC_NUMBER (R_ALPHA_NONE, 0)        /* No reloc */
  75   RELOC_NUMBER (R_ALPHA_REFLONG, 1)     /* Direct 32 bit */
  76   RELOC_NUMBER (R_ALPHA_REFQUAD, 2)     /* Direct 64 bit */
  77   RELOC_NUMBER (R_ALPHA_GPREL32, 3)     /* GP relative 32 bit */
  78   RELOC_NUMBER (R_ALPHA_LITERAL, 4)     /* GP relative 16 bit w/optimization */
  79   RELOC_NUMBER (R_ALPHA_LITUSE, 5)      /* Optimization hint for LITERAL */
  80   RELOC_NUMBER (R_ALPHA_GPDISP, 6)      /* Add displacement to GP */
  81   RELOC_NUMBER (R_ALPHA_BRADDR, 7)      /* PC+4 relative 23 bit shifted */
  82   RELOC_NUMBER (R_ALPHA_HINT, 8)        /* PC+4 relative 16 bit shifted */
  83   RELOC_NUMBER (R_ALPHA_SREL16, 9)      /* PC relative 16 bit */
  84   RELOC_NUMBER (R_ALPHA_SREL32, 10)     /* PC relative 32 bit */
  85   RELOC_NUMBER (R_ALPHA_SREL64, 11)     /* PC relative 64 bit */
  86
  87   /* Skip 12 - 16; deprecated ECOFF relocs.  */
  88
  89   RELOC_NUMBER (R_ALPHA_GPRELHIGH, 17)  /* GP relative 32 bit, high 16 bits */
  90   RELOC_NUMBER (R_ALPHA_GPRELLOW, 18)   /* GP relative 32 bit, low 16 bits */
  91   RELOC_NUMBER (R_ALPHA_GPREL16, 19)    /* GP relative 16 bit */
  92
  93   /* Skip 20 - 23; deprecated ECOFF relocs.  */
  94
  95   /* These relocations are specific to shared libraries.  */
  96   RELOC_NUMBER (R_ALPHA_COPY, 24)       /* Copy symbol at runtime */
  97   RELOC_NUMBER (R_ALPHA_GLOB_DAT, 25)   /* Create GOT entry */
  98   RELOC_NUMBER (R_ALPHA_JMP_SLOT, 26)   /* Create PLT entry */
  99   RELOC_NUMBER (R_ALPHA_RELATIVE, 27)   /* Adjust by program base */
 100
 101   /* Like BRADDR, but assert that the source and target object file
 102      share the same GP value, and adjust the target address for
 103      STO_ALPHA_STD_GPLOAD.  */
 104   RELOC_NUMBER (R_ALPHA_BRSGP, 28)
 105
 106   /* Thread-Local Storage.  */
 107   RELOC_NUMBER (R_ALPHA_TLSGD, 29)
 108   RELOC_NUMBER (R_ALPHA_TLSLDM, 30)
 109   RELOC_NUMBER (R_ALPHA_DTPMOD64, 31)
 110   RELOC_NUMBER (R_ALPHA_GOTDTPREL, 32)
 111   RELOC_NUMBER (R_ALPHA_DTPREL64, 33)
 112   RELOC_NUMBER (R_ALPHA_DTPRELHI, 34)
 113   RELOC_NUMBER (R_ALPHA_DTPRELLO, 35)
 114   RELOC_NUMBER (R_ALPHA_DTPREL16, 36)
 115   RELOC_NUMBER (R_ALPHA_GOTTPREL, 37)
 116   RELOC_NUMBER (R_ALPHA_TPREL64, 38)
 117   RELOC_NUMBER (R_ALPHA_TPRELHI, 39)
 118   RELOC_NUMBER (R_ALPHA_TPRELLO, 40)
 119   RELOC_NUMBER (R_ALPHA_TPREL16, 41)
 120
 121 END_RELOC_NUMBERS (R_ALPHA_max)
 122
 123 #define LITUSE_ALPHA_ADDR       0
 124 #define LITUSE_ALPHA_BASE       1
 125 #define LITUSE_ALPHA_BYTOFF     2
 126 #define LITUSE_ALPHA_JSR        3
 127 #define LITUSE_ALPHA_TLSGD      4
 128 #define LITUSE_ALPHA_TLSLDM     5
 129 #define LITUSE_ALPHA_JSRDIRECT  6
 130
 131 #endif /* _ELF_ALPHA_H */