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  1. /* ALPHA ELF support for BFD.
  2.    Copyright 1996, 1998, 2000, 2001, 2002, 2010 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 */
  132.