Add MMIX support

1 files changed, 151 insertions, 0 deletions

diff --git a/include/elf/mmix.h b/include/elf/mmix.h
new file mode 100644
index 0000000000..fa367e5a31
--- /dev/null
+++ b/include/elf/mmix.h
@@ -0,0 +1,151 @@
+/* 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 */