1 /* ALPHA ELF support for BFD. 2 Copyright (C) 1996-2016 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