include/elf/alpha.h

   1 /* ALPHA ELF support for BFD.
   2    Copyright 1996, 1998, 2000, 2001, 2002 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 2 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, MA 02110-1301, USA.  */
  22
  23 /* This file holds definitions specific to the ALPHA ELF ABI.  Note
  24    that most of this is not actually implemented by BFD.  */
  25
  26 #ifndef _ELF_ALPHA_H
  27 #define _ELF_ALPHA_H
  28
  29 /* Processor specific flags for the ELF header e_flags field.  */
  30
  31 /* All addresses must be below 2GB.  */
  32 #define EF_ALPHA_32BIT          0x00000001
  33
  34 /* All relocations needed for relaxation with code movement are present.  */
  35 #define EF_ALPHA_CANRELAX       0x00000002
  36
  37 /* Processor specific section flags.  */
  38
  39 /* This section must be in the global data area.  */
  40 #define SHF_ALPHA_GPREL         0x10000000
  41
  42 /* Section contains some sort of debugging information.  The exact
  43    format is unspecified.  It's probably ECOFF symbols.  */
  44 #define SHT_ALPHA_DEBUG         0x70000001
  45
  46 /* Section contains register usage information.  */
  47 #define SHT_ALPHA_REGINFO       0x70000002
  48
  49 /* A section of type SHT_MIPS_REGINFO contains the following
  50    structure.  */
  51 typedef struct
  52 {
  53   /* Mask of general purpose registers used.  */
  54   unsigned long ri_gprmask;
  55   /* Mask of co-processor registers used.  */
  56   unsigned long ri_cprmask[4];
  57   /* GP register value for this object file.  */
  58   long ri_gp_value;
  59 } Elf64_RegInfo;
  60
  61 /* Special values for the st_other field in the symbol table.  */
  62
  63 #define STO_ALPHA_NOPV          0x80
  64 #define STO_ALPHA_STD_GPLOAD    0x88
  65
  66 /* Special values for Elf64_Dyn tag.  */
  67 #define DT_ALPHA_PLTRO          DT_LOPROC
  68
  69 #include "elf/reloc-macros.h"
  70
  71 /* Alpha relocs.  */
  72 START_RELOC_NUMBERS (elf_alpha_reloc_type)
  73   RELOC_NUMBER (R_ALPHA_NONE, 0)        /* No reloc */
  74   RELOC_NUMBER (R_ALPHA_REFLONG, 1)     /* Direct 32 bit */
  75   RELOC_NUMBER (R_ALPHA_REFQUAD, 2)     /* Direct 64 bit */
  76   RELOC_NUMBER (R_ALPHA_GPREL32, 3)     /* GP relative 32 bit */
  77   RELOC_NUMBER (R_ALPHA_LITERAL, 4)     /* GP relative 16 bit w/optimization */
  78   RELOC_NUMBER (R_ALPHA_LITUSE, 5)      /* Optimization hint for LITERAL */
  79   RELOC_NUMBER (R_ALPHA_GPDISP, 6)      /* Add displacement to GP */
  80   RELOC_NUMBER (R_ALPHA_BRADDR, 7)      /* PC+4 relative 23 bit shifted */
  81   RELOC_NUMBER (R_ALPHA_HINT, 8)        /* PC+4 relative 16 bit shifted */
  82   RELOC_NUMBER (R_ALPHA_SREL16, 9)      /* PC relative 16 bit */
  83   RELOC_NUMBER (R_ALPHA_SREL32, 10)     /* PC relative 32 bit */
  84   RELOC_NUMBER (R_ALPHA_SREL64, 11)     /* PC relative 64 bit */
  85
  86   /* Skip 12 - 16; deprecated ECOFF relocs.  */
  87
  88   RELOC_NUMBER (R_ALPHA_GPRELHIGH, 17)  /* GP relative 32 bit, high 16 bits */
  89   RELOC_NUMBER (R_ALPHA_GPRELLOW, 18)   /* GP relative 32 bit, low 16 bits */
  90   RELOC_NUMBER (R_ALPHA_GPREL16, 19)    /* GP relative 16 bit */
  91
  92   /* Skip 20 - 23; deprecated ECOFF relocs.  */
  93
  94   /* These relocations are specific to shared libraries.  */
  95   RELOC_NUMBER (R_ALPHA_COPY, 24)       /* Copy symbol at runtime */
  96   RELOC_NUMBER (R_ALPHA_GLOB_DAT, 25)   /* Create GOT entry */
  97   RELOC_NUMBER (R_ALPHA_JMP_SLOT, 26)   /* Create PLT entry */
  98   RELOC_NUMBER (R_ALPHA_RELATIVE, 27)   /* Adjust by program base */
  99
 100   /* Like BRADDR, but assert that the source and target object file
 101      share the same GP value, and adjust the target address for
 102      STO_ALPHA_STD_GPLOAD.  */
 103   RELOC_NUMBER (R_ALPHA_BRSGP, 28)
 104
 105   /* Thread-Local Storage.  */
 106   RELOC_NUMBER (R_ALPHA_TLSGD, 29)
 107   RELOC_NUMBER (R_ALPHA_TLSLDM, 30)
 108   RELOC_NUMBER (R_ALPHA_DTPMOD64, 31)
 109   RELOC_NUMBER (R_ALPHA_GOTDTPREL, 32)
 110   RELOC_NUMBER (R_ALPHA_DTPREL64, 33)
 111   RELOC_NUMBER (R_ALPHA_DTPRELHI, 34)
 112   RELOC_NUMBER (R_ALPHA_DTPRELLO, 35)
 113   RELOC_NUMBER (R_ALPHA_DTPREL16, 36)
 114   RELOC_NUMBER (R_ALPHA_GOTTPREL, 37)
 115   RELOC_NUMBER (R_ALPHA_TPREL64, 38)
 116   RELOC_NUMBER (R_ALPHA_TPRELHI, 39)
 117   RELOC_NUMBER (R_ALPHA_TPRELLO, 40)
 118   RELOC_NUMBER (R_ALPHA_TPREL16, 41)
 119
 120 END_RELOC_NUMBERS (R_ALPHA_max)
 121
 122 #define LITUSE_ALPHA_ADDR       0
 123 #define LITUSE_ALPHA_BASE       1
 124 #define LITUSE_ALPHA_BYTOFF     2
 125 #define LITUSE_ALPHA_JSR        3
 126 #define LITUSE_ALPHA_TLSGD      4
 127 #define LITUSE_ALPHA_TLSLDM     5
 128 #define LITUSE_ALPHA_JSRDIRECT  6
 129
 130 #endif /* _ELF_ALPHA_H */