newlib/include/elf/mmix.h

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2001-10-30 16:20:10 +01:00
/* MMIX support for BFD.
Copyright (C) 2001 Free Software Foundation, Inc.
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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* This file holds definitions specific to the MMIX ELF ABI. */
#ifndef ELF_MMIX_H
#define ELF_MMIX_H
#include "elf/reloc-macros.h"
/* Relocations. */
START_RELOC_NUMBERS (elf_mmix_reloc_type)
RELOC_NUMBER (R_MMIX_NONE, 0)
/* Standard absolute relocations. */
RELOC_NUMBER (R_MMIX_8, 1)
RELOC_NUMBER (R_MMIX_16, 2)
RELOC_NUMBER (R_MMIX_24, 3)
RELOC_NUMBER (R_MMIX_32, 4)
RELOC_NUMBER (R_MMIX_64, 5)
/* Standard relative relocations. */
RELOC_NUMBER (R_MMIX_PC_8, 6)
RELOC_NUMBER (R_MMIX_PC_16, 7)
RELOC_NUMBER (R_MMIX_PC_24, 8)
RELOC_NUMBER (R_MMIX_PC_32, 9)
RELOC_NUMBER (R_MMIX_PC_64, 10)
/* GNU extensions for C++ vtables. */
RELOC_NUMBER (R_MMIX_GNU_VTINHERIT, 11)
RELOC_NUMBER (R_MMIX_GNU_VTENTRY, 12)
/* A GETA instruction. */
RELOC_NUMBER (R_MMIX_GETA, 13)
RELOC_NUMBER (R_MMIX_GETA_1, 14)
RELOC_NUMBER (R_MMIX_GETA_2, 15)
RELOC_NUMBER (R_MMIX_GETA_3, 16)
/* A conditional branch instruction. */
RELOC_NUMBER (R_MMIX_CBRANCH, 17)
RELOC_NUMBER (R_MMIX_CBRANCH_J, 18)
RELOC_NUMBER (R_MMIX_CBRANCH_1, 19)
RELOC_NUMBER (R_MMIX_CBRANCH_2, 20)
RELOC_NUMBER (R_MMIX_CBRANCH_3, 21)
/* A PUSHJ instruction. */
RELOC_NUMBER (R_MMIX_PUSHJ, 22)
RELOC_NUMBER (R_MMIX_PUSHJ_1, 23)
RELOC_NUMBER (R_MMIX_PUSHJ_2, 24)
RELOC_NUMBER (R_MMIX_PUSHJ_3, 25)
/* A JMP instruction. */
RELOC_NUMBER (R_MMIX_JMP, 26)
RELOC_NUMBER (R_MMIX_JMP_1, 27)
RELOC_NUMBER (R_MMIX_JMP_2, 28)
RELOC_NUMBER (R_MMIX_JMP_3, 29)
/* A relative address such as in a GETA or a branch. */
RELOC_NUMBER (R_MMIX_ADDR19, 30)
/* A relative address such as in a JMP (only). */
RELOC_NUMBER (R_MMIX_ADDR27, 31)
/* A general register or a number 0..255. */
RELOC_NUMBER (R_MMIX_REG_OR_BYTE, 32)
/* A general register. */
RELOC_NUMBER (R_MMIX_REG, 33)
/* A global register and an offset, equivalent of the expression. */
RELOC_NUMBER (R_MMIX_BASE_PLUS_OFFSET, 34)
/* A LOCAL assertion. */
RELOC_NUMBER (R_MMIX_LOCAL, 35)
END_RELOC_NUMBERS (R_MMIX_max)
/* Section Attributes. */
/* A section containing necessary information for relaxation. */
#define SHF_MMIX_CANRELAX 0x80000000
/* Symbol attributes. */
/* A symbol with this section-index is a register. */
#define SHN_REGISTER SHN_LOPROC
/* This section holds contents for each initialized register, at VMA
regno*8. A symbol relative to this section will be transformed to an
absolute symbol with the value corresponding to the register number at
final link time. A symbol with a value outside the inclusive range
32*8 .. 254*8 is an error. It is highly recommended to only use an
upper bound of 253*8 or lower as specified in the (currently
unspecified) ABI. */
#define MMIX_REG_CONTENTS_SECTION_NAME ".MMIX.reg_contents"
/* This is a faked section holding symbols with SHN_REGISTER. Don't
confuse it with MMIX_REG_CONTENTS_SECTION_NAME; this one has no
contents, just values. It is an error for a value in this section to
be outside the range 32..255 and it must never become an actual section
in an object file. */
#define MMIX_REG_SECTION_NAME "*REG*"
/* Appended with a number N=0..65535, this is a representation of the
mmixal "BSPEC N" ... "ESPEC" directive pair; the contents go into an
ELF section by name ".MMIX.spec_data.N". */
#define MMIX_OTHER_SPEC_SECTION_PREFIX ".MMIX.spec_data."
/* A section SECNAME is noted to start at "__.MMIX.start.SECNAME" by the
presence of this symbol. Currently only implemented for ".text"
through the symbol "__.MMIX.start..text". */
#define MMIX_LOC_SECTION_START_SYMBOL_PREFIX "__.MMIX.start."
/* This symbol is always a function. */
#define MMIX_START_SYMBOL_NAME "Main"
/* We smuggle in a few MMO specifics here. We don't make a specific MMO
file, since we can't reasonably support MMO without ELF; we have to
include this file anyway. */
#define MMO_TEXT_SECTION_NAME ".text"
#define MMO_DATA_SECTION_NAME ".data"
/* A definition for the flags we put in spec data in files. A copy of our
own of some flags to keep immune to BFD flag changes. See section.c of
2001-07-18 for flag documentation. */
#define MMO_SEC_ALLOC 0x001
#define MMO_SEC_LOAD 0x002
#define MMO_SEC_RELOC 0x004
#define MMO_SEC_READONLY 0x010
#define MMO_SEC_CODE 0x020
#define MMO_SEC_DATA 0x040
#define MMO_SEC_NEVER_LOAD 0x400
#define MMO_SEC_IS_COMMON 0x8000
#define MMO_SEC_DEBUGGING 0x10000
#endif /* ELF_MMIX_H */