OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [include/] [elf/] [mmix.h] - Blame information for rev 834

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 227 jeremybenn
/* MMIX support for BFD.
2
   Copyright 2001, 2002, 2003 Free Software Foundation, Inc.
3
 
4
This file is part of BFD, the Binary File Descriptor library.
5
 
6
This program is free software; you can redistribute it and/or modify
7
it under the terms of the GNU General Public License as published by
8
the Free Software Foundation; either version 2 of the License, or
9
(at your option) any later version.
10
 
11
This program is distributed in the hope that it will be useful,
12
but WITHOUT ANY WARRANTY; without even the implied warranty of
13
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
GNU General Public License for more details.
15
 
16
You should have received a copy of the GNU General Public License
17
along with this program; if not, write to the Free Software
18
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
19
 
20
/* This file holds definitions specific to the MMIX ELF ABI. */
21
#ifndef ELF_MMIX_H
22
#define ELF_MMIX_H
23
 
24
#include "elf/reloc-macros.h"
25
 
26
/* Relocations.  See the reloc table in bfd/elf64-mmix.c for details.  */
27
START_RELOC_NUMBERS (elf_mmix_reloc_type)
28
  RELOC_NUMBER (R_MMIX_NONE, 0)
29
 
30
  /* Standard absolute relocations.  */
31
  RELOC_NUMBER (R_MMIX_8, 1)
32
  RELOC_NUMBER (R_MMIX_16, 2)
33
  RELOC_NUMBER (R_MMIX_24, 3)
34
  RELOC_NUMBER (R_MMIX_32, 4)
35
  RELOC_NUMBER (R_MMIX_64, 5)
36
 
37
  /* Standard relative relocations.  */
38
  RELOC_NUMBER (R_MMIX_PC_8, 6)
39
  RELOC_NUMBER (R_MMIX_PC_16, 7)
40
  RELOC_NUMBER (R_MMIX_PC_24, 8)
41
  RELOC_NUMBER (R_MMIX_PC_32, 9)
42
  RELOC_NUMBER (R_MMIX_PC_64, 10)
43
 
44
  /* GNU extensions for C++ vtables.  */
45
  RELOC_NUMBER (R_MMIX_GNU_VTINHERIT, 11)
46
  RELOC_NUMBER (R_MMIX_GNU_VTENTRY, 12)
47
 
48
  /* A GETA instruction.  */
49
  RELOC_NUMBER (R_MMIX_GETA, 13)
50
  RELOC_NUMBER (R_MMIX_GETA_1, 14)
51
  RELOC_NUMBER (R_MMIX_GETA_2, 15)
52
  RELOC_NUMBER (R_MMIX_GETA_3, 16)
53
 
54
  /* A conditional branch instruction.  */
55
  RELOC_NUMBER (R_MMIX_CBRANCH, 17)
56
  RELOC_NUMBER (R_MMIX_CBRANCH_J, 18)
57
  RELOC_NUMBER (R_MMIX_CBRANCH_1, 19)
58
  RELOC_NUMBER (R_MMIX_CBRANCH_2, 20)
59
  RELOC_NUMBER (R_MMIX_CBRANCH_3, 21)
60
 
61
  /* A PUSHJ instruction.  */
62
  RELOC_NUMBER (R_MMIX_PUSHJ, 22)
63
  RELOC_NUMBER (R_MMIX_PUSHJ_1, 23)
64
  RELOC_NUMBER (R_MMIX_PUSHJ_2, 24)
65
  RELOC_NUMBER (R_MMIX_PUSHJ_3, 25)
66
 
67
  /* A JMP instruction.  */
68
  RELOC_NUMBER (R_MMIX_JMP, 26)
69
  RELOC_NUMBER (R_MMIX_JMP_1, 27)
70
  RELOC_NUMBER (R_MMIX_JMP_2, 28)
71
  RELOC_NUMBER (R_MMIX_JMP_3, 29)
72
 
73
  /* A relative address such as in a GETA or a branch.  */
74
  RELOC_NUMBER (R_MMIX_ADDR19, 30)
75
 
76
  /* A relative address such as in a JMP (only).  */
77
  RELOC_NUMBER (R_MMIX_ADDR27, 31)
78
 
79
  /* A general register or a number 0..255.  */
80
  RELOC_NUMBER (R_MMIX_REG_OR_BYTE, 32)
81
 
82
  /* A general register. */
83
  RELOC_NUMBER (R_MMIX_REG, 33)
84
 
85
  /* A global register and an offset, the global register (allocated at
86
     link time) contents plus the offset made equivalent to the relocation
87
     expression at link time.  The relocation must point at the Y field of
88
     an instruction.  */
89
  RELOC_NUMBER (R_MMIX_BASE_PLUS_OFFSET, 34)
90
 
91
  /* A LOCAL assertion.  */
92
  RELOC_NUMBER (R_MMIX_LOCAL, 35)
93
 
94
  /* A PUSHJ instruction, generating a stub if it does not reach.  */
95
  RELOC_NUMBER (R_MMIX_PUSHJ_STUBBABLE, 36)
96
END_RELOC_NUMBERS (R_MMIX_max)
97
 
98
 
99
/* Section Attributes.  */
100
/* A section containing necessary information for relaxation.  */
101
#define SHF_MMIX_CANRELAX       0x80000000
102
 
103
/* Symbol attributes.  */
104
/* A symbol with this section-index is a register.  */
105
#define SHN_REGISTER    SHN_LOPROC
106
 
107
/* This section holds contents for each initialized register, at VMA
108
   regno*8.  A symbol relative to this section will be transformed to an
109
   absolute symbol with the value corresponding to the register number at
110
   final link time.  A symbol with a value outside the inclusive range
111
   32*8 .. 254*8 is an error.  It is highly recommended to only use an
112
   upper bound of 253*8 or lower as specified in the (currently
113
   unspecified) ABI.  */
114
#define MMIX_REG_CONTENTS_SECTION_NAME ".MMIX.reg_contents"
115
 
116
/* At link time, a section by this name is created, expected to be
117
   included in MMIX_REG_CONTENTS_SECTION_NAME in the output.  */
118
#define MMIX_LD_ALLOCATED_REG_CONTENTS_SECTION_NAME \
119
 ".MMIX.reg_contents.linker_allocated"
120
 
121
/* This is a faked section holding symbols with SHN_REGISTER.  Don't
122
   confuse it with MMIX_REG_CONTENTS_SECTION_NAME; this one has no
123
   contents, just values.  It is an error for a value in this section to
124
   be outside the range 32..255 and it must never become an actual section
125
   in an object file.  */
126
#define MMIX_REG_SECTION_NAME "*REG*"
127
 
128
/* Appended with a number N=0..65535, this is a representation of the
129
   mmixal "BSPEC N" ... "ESPEC" directive pair; the contents go into an
130
   ELF section by name ".MMIX.spec_data.N".  */
131
#define MMIX_OTHER_SPEC_SECTION_PREFIX ".MMIX.spec_data."
132
 
133
/* A section SECNAME is noted to start at "__.MMIX.start.SECNAME" by the
134
   presence of this symbol.  Currently only implemented for ".text"
135
   through the symbol "__.MMIX.start..text".  */
136
#define MMIX_LOC_SECTION_START_SYMBOL_PREFIX "__.MMIX.start."
137
 
138
/* This symbol is always a function.  */
139
#define MMIX_START_SYMBOL_NAME "Main"
140
 
141
 
142
/* We smuggle in a few MMO specifics here.  We don't make a specific MMO
143
   file, since we can't reasonably support MMO without ELF; we have to
144
   include this file anyway.  */
145
 
146
#define MMO_TEXT_SECTION_NAME ".text"
147
#define MMO_DATA_SECTION_NAME ".data"
148
 
149
/* A definition for the flags we put in spec data in files.  A copy of our
150
   own of some flags to keep immune to BFD flag changes.  See section.c of
151
   2001-07-18 for flag documentation.  */
152
#define MMO_SEC_ALLOC      0x001
153
#define MMO_SEC_LOAD       0x002
154
#define MMO_SEC_RELOC      0x004
155
#define MMO_SEC_READONLY   0x010
156
#define MMO_SEC_CODE       0x020
157
#define MMO_SEC_DATA       0x040
158
#define MMO_SEC_NEVER_LOAD 0x400
159
#define MMO_SEC_IS_COMMON 0x8000
160
#define MMO_SEC_DEBUGGING 0x10000
161
 
162
#ifdef BFD_ARCH_SIZE
163
extern bfd_boolean _bfd_mmix_before_linker_allocation
164
  (bfd *, struct bfd_link_info *);
165
extern bfd_boolean _bfd_mmix_after_linker_allocation
166
  (bfd *, struct bfd_link_info *);
167
extern bfd_boolean _bfd_mmix_check_all_relocs
168
  (bfd *, struct bfd_link_info *);
169
#endif
170
 
171
#endif /* ELF_MMIX_H */

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.