/* ALPHA ELF support for BFD.

   Copyright (C) 1996-2025 Free Software Foundation, Inc.

   By Eric Youngdale, <eric@aib.com>.  No processor supplement available

   for this platform.

   This file is part of BFD, the Binary File Descriptor library.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

   MA 02110-1301, USA.  */

/* This file holds definitions specific to the ALPHA ELF ABI.  Note

   that most of this is not actually implemented by BFD.  */

#ifndef _ELF_ALPHA_H

#define _ELF_ALPHA_H

/* Processor specific flags for the ELF header e_flags field.  */

/* All addresses must be below 2GB.  */

#define EF_ALPHA_32BIT    0x00000001

/* All relocations needed for relaxation with code movement are present.  */

#define EF_ALPHA_CANRELAX 0x00000002

/* Processor specific section flags.  */

/* This section must be in the global data area.  */

#define SHF_ALPHA_GPREL   0x10000000

/* Section contains some sort of debugging information.  The exact

   format is unspecified.  It's probably ECOFF symbols.  */

#define SHT_ALPHA_DEBUG   (SHT_LOPROC + 1)

/* Section contains register usage information.  */

#define SHT_ALPHA_REGINFO (SHT_LOPROC + 2)

/* A section of type SHT_MIPS_REGINFO contains the following

   structure.  */

typedef struct

{

  /* Mask of general purpose registers used.  */

  unsigned long ri_gprmask;

  /* Mask of co-processor registers used.  */

  unsigned long ri_cprmask[4];

  /* GP register value for this object file.  */

  long ri_gp_value;

} Elf64_RegInfo;

/* Special values for the st_other field in the symbol table.  */

#define STO_ALPHA_NOPV    0x80

#define STO_ALPHA_STD_GPLOAD  0x88

/* Special values for Elf64_Dyn tag.  */

#define DT_ALPHA_PLTRO    DT_LOPROC

#include "elf/reloc-macros.h"

/* Alpha relocs.  */

START_RELOC_NUMBERS (elf_alpha_reloc_type)

  RELOC_NUMBER (R_ALPHA_NONE, 0)  /* No reloc */

  RELOC_NUMBER (R_ALPHA_REFLONG, 1) /* Direct 32 bit */

  RELOC_NUMBER (R_ALPHA_REFQUAD, 2) /* Direct 64 bit */

  RELOC_NUMBER (R_ALPHA_GPREL32, 3) /* GP relative 32 bit */

  RELOC_NUMBER (R_ALPHA_LITERAL, 4) /* GP relative 16 bit w/optimization */

  RELOC_NUMBER (R_ALPHA_LITUSE, 5)  /* Optimization hint for LITERAL */

  RELOC_NUMBER (R_ALPHA_GPDISP, 6)  /* Add displacement to GP */

  RELOC_NUMBER (R_ALPHA_BRADDR, 7)  /* PC+4 relative 23 bit shifted */

  RELOC_NUMBER (R_ALPHA_HINT, 8)  /* PC+4 relative 16 bit shifted */

  RELOC_NUMBER (R_ALPHA_SREL16, 9)  /* PC relative 16 bit */

  RELOC_NUMBER (R_ALPHA_SREL32, 10) /* PC relative 32 bit */

  RELOC_NUMBER (R_ALPHA_SREL64, 11) /* PC relative 64 bit */

  /* Skip 12 - 16; deprecated ECOFF relocs.  */

  RELOC_NUMBER (R_ALPHA_GPRELHIGH, 17)  /* GP relative 32 bit, high 16 bits */

  RELOC_NUMBER (R_ALPHA_GPRELLOW, 18) /* GP relative 32 bit, low 16 bits */

  RELOC_NUMBER (R_ALPHA_GPREL16, 19)  /* GP relative 16 bit */

  /* Skip 20 - 23; deprecated ECOFF relocs.  */

  /* These relocations are specific to shared libraries.  */

  RELOC_NUMBER (R_ALPHA_COPY, 24) /* Copy symbol at runtime */

  RELOC_NUMBER (R_ALPHA_GLOB_DAT, 25) /* Create GOT entry */

  RELOC_NUMBER (R_ALPHA_JMP_SLOT, 26) /* Create PLT entry */

  RELOC_NUMBER (R_ALPHA_RELATIVE, 27) /* Adjust by program base */

  /* Like BRADDR, but assert that the source and target object file

     share the same GP value, and adjust the target address for 

     STO_ALPHA_STD_GPLOAD.  */

  RELOC_NUMBER (R_ALPHA_BRSGP, 28)

  /* Thread-Local Storage.  */

  RELOC_NUMBER (R_ALPHA_TLSGD, 29)

  RELOC_NUMBER (R_ALPHA_TLSLDM, 30)

  RELOC_NUMBER (R_ALPHA_DTPMOD64, 31)

  RELOC_NUMBER (R_ALPHA_GOTDTPREL, 32)

  RELOC_NUMBER (R_ALPHA_DTPREL64, 33)

  RELOC_NUMBER (R_ALPHA_DTPRELHI, 34)

  RELOC_NUMBER (R_ALPHA_DTPRELLO, 35)

  RELOC_NUMBER (R_ALPHA_DTPREL16, 36)

  RELOC_NUMBER (R_ALPHA_GOTTPREL, 37)

  RELOC_NUMBER (R_ALPHA_TPREL64, 38)

  RELOC_NUMBER (R_ALPHA_TPRELHI, 39)

  RELOC_NUMBER (R_ALPHA_TPRELLO, 40)

  RELOC_NUMBER (R_ALPHA_TPREL16, 41)

END_RELOC_NUMBERS (R_ALPHA_max)

#define LITUSE_ALPHA_ADDR 0

#define LITUSE_ALPHA_BASE 1

#define LITUSE_ALPHA_BYTOFF 2

#define LITUSE_ALPHA_JSR  3

#define LITUSE_ALPHA_TLSGD  4

#define LITUSE_ALPHA_TLSLDM 5

#define LITUSE_ALPHA_JSRDIRECT  6

#endif /* _ELF_ALPHA_H */