alpha.h revision 89857
1/* ALPHA ELF support for BFD. 2 Copyright 1996, 1998, 2000 Free Software Foundation, Inc. 3 4 By Eric Youngdale, <eric@aib.com>. No processor supplement available 5 for this platform. 6 7This file is part of BFD, the Binary File Descriptor library. 8 9This program is free software; you can redistribute it and/or modify 10it under the terms of the GNU General Public License as published by 11the Free Software Foundation; either version 2 of the License, or 12(at your option) any later version. 13 14This program is distributed in the hope that it will be useful, 15but WITHOUT ANY WARRANTY; without even the implied warranty of 16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17GNU General Public License for more details. 18 19You should have received a copy of the GNU General Public License 20along with this program; if not, write to the Free Software 21Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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. */ 51typedef 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#include "elf/reloc-macros.h" 67 68/* Alpha relocs. */ 69START_RELOC_NUMBERS (elf_alpha_reloc_type) 70 RELOC_NUMBER (R_ALPHA_NONE, 0) /* No reloc */ 71 RELOC_NUMBER (R_ALPHA_REFLONG, 1) /* Direct 32 bit */ 72 RELOC_NUMBER (R_ALPHA_REFQUAD, 2) /* Direct 64 bit */ 73 RELOC_NUMBER (R_ALPHA_GPREL32, 3) /* GP relative 32 bit */ 74 RELOC_NUMBER (R_ALPHA_LITERAL, 4) /* GP relative 16 bit w/optimization */ 75 RELOC_NUMBER (R_ALPHA_LITUSE, 5) /* Optimization hint for LITERAL */ 76 RELOC_NUMBER (R_ALPHA_GPDISP, 6) /* Add displacement to GP */ 77 RELOC_NUMBER (R_ALPHA_BRADDR, 7) /* PC+4 relative 23 bit shifted */ 78 RELOC_NUMBER (R_ALPHA_HINT, 8) /* PC+4 relative 16 bit shifted */ 79 RELOC_NUMBER (R_ALPHA_SREL16, 9) /* PC relative 16 bit */ 80 RELOC_NUMBER (R_ALPHA_SREL32, 10) /* PC relative 32 bit */ 81 RELOC_NUMBER (R_ALPHA_SREL64, 11) /* PC relative 64 bit */ 82 83 /* Skip 12 - 16; deprecated ECOFF relocs. */ 84 85 RELOC_NUMBER (R_ALPHA_GPRELHIGH, 17) /* GP relative 32 bit, high 16 bits */ 86 RELOC_NUMBER (R_ALPHA_GPRELLOW, 18) /* GP relative 32 bit, low 16 bits */ 87 RELOC_NUMBER (R_ALPHA_GPREL16, 19) /* GP relative 16 bit */ 88 89 /* Skip 20 - 23; deprecated ECOFF relocs. */ 90 91 /* These relocations are specific to shared libraries. */ 92 RELOC_NUMBER (R_ALPHA_COPY, 24) /* Copy symbol at runtime */ 93 RELOC_NUMBER (R_ALPHA_GLOB_DAT, 25) /* Create GOT entry */ 94 RELOC_NUMBER (R_ALPHA_JMP_SLOT, 26) /* Create PLT entry */ 95 RELOC_NUMBER (R_ALPHA_RELATIVE, 27) /* Adjust by program base */ 96 97END_RELOC_NUMBERS (R_ALPHA_max) 98 99#endif /* _ELF_ALPHA_H */ 100