alpha.h revision 60484 
1/* ALPHA ELF support for BFD.
2   Copyright (C) 1996, 1998 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/* Inherited these from ECOFF, but they are not particularly useful
84   and are depreciated.  And not implemented in the BFD, btw.  */
85  RELOC_NUMBER (R_ALPHA_OP_PUSH, 12)	/* OP stack push */
86  RELOC_NUMBER (R_ALPHA_OP_STORE, 13)	/* OP stack pop and store */
87  RELOC_NUMBER (R_ALPHA_OP_PSUB, 14)	/* OP stack subtract */
88  RELOC_NUMBER (R_ALPHA_OP_PRSHIFT, 15)	/* OP stack right shift */
89
90  RELOC_NUMBER (R_ALPHA_GPVALUE, 16)
91  RELOC_NUMBER (R_ALPHA_GPRELHIGH, 17)
92  RELOC_NUMBER (R_ALPHA_GPRELLOW, 18)
93  RELOC_NUMBER (R_ALPHA_IMMED_GP_16, 19)
94  RELOC_NUMBER (R_ALPHA_IMMED_GP_HI32, 20)
95  RELOC_NUMBER (R_ALPHA_IMMED_SCN_HI32, 21)
96  RELOC_NUMBER (R_ALPHA_IMMED_BR_HI32, 22)
97  RELOC_NUMBER (R_ALPHA_IMMED_LO32, 23)
98
99/* These relocations are specific to shared libraries.  */
100  RELOC_NUMBER (R_ALPHA_COPY, 24)	/* Copy symbol at runtime */
101  RELOC_NUMBER (R_ALPHA_GLOB_DAT, 25)	/* Create GOT entry */
102  RELOC_NUMBER (R_ALPHA_JMP_SLOT, 26)	/* Create PLT entry */
103  RELOC_NUMBER (R_ALPHA_RELATIVE, 27)	/* Adjust by program base */
104
105  EMPTY_RELOC  (R_ALPHA_max)
106END_RELOC_NUMBERS
107
108#endif /* _ELF_ALPHA_H */
109