New ARC implementation.

bfd	* archures.c: Remove support for older ARC. Added support for new
	ARC cpus (ARC600, ARC601, ARC700, ARCV2).
	* bfd-in2.h: Likewise.
	* config.bfd: Likewise.
	* cpu-arc.c: Likewise.
	* elf32-arc.c: Totally changed file with a refactored
	inplementation of the ARC port.
	* libbfd.h: Added ARC specific relocation types.
	* reloc.c: Likewise.

gas     * config/tc-arc.c: Revamped file for ARC support.
        * config/tc-arc.h: Likewise.
        * doc/as.texinfo: Add new ARC options.
        * doc/c-arc.texi: Likewise.

ld	* configure.tgt: Added target arc-*-elf* and arc*-*-linux-uclibc*.
	* emulparams/arcebelf_prof.sh: New file
	* emulparams/arcebelf.sh: Likewise.
	* emulparams/arceblinux_prof.sh: Likewise.
	* emulparams/arceblinux.sh: Likewise.
	* emulparams/arcelf_prof.sh: Likewise.
	* emulparams/arcelf.sh: Likewise.
	* emulparams/arclinux_prof.sh: Likewise.
	* emulparams/arclinux.sh: Likewise.
	* emulparams/arcv2elfx.sh: Likewise.
	* emulparams/arcv2elf.sh: Likewise.
	* emultempl/arclinux.em: Likewise.
	* scripttempl/arclinux.sc: Likewise.
	* scripttempl/elfarc.sc: Likewise.
	* scripttempl/elfarcv2.sc: Likewise
	* Makefile.am: Add new ARC emulations.
	* Makefile.in: Regenerate.
	* NEWS: Mention the new feature.

opcodes * arc-dis.c: Revamped file for ARC support
	* arc-dis.h: Likewise.
	* arc-ext.c: Likewise.
	* arc-ext.h: Likewise.
	* arc-opc.c: Likewise.
	* arc-fxi.h: New file.
	* arc-regs.h: Likewise.
	* arc-tbl.h: Likewise.

binutils * readelf.c (get_machine_name): Remove A5 reference. Add ARCompact
	and ARCv2.
	(get_machine_flags): Handle EM_ARCV2 and EM_ARCOMPACT.
	(guess_is_rela): Likewise.
	(dump_relocations): Likewise.
	(is_32bit_abs_reloc): Likewise.
	(is_16bit_abs_reloc): Likewise.
	(is_none_reloc): Likewise.
	* NEWS: Mention the new feature.

include	* dis-asm.h (arc_get_disassembler): Correct declaration.
	* arc-reloc.def: Macro file with definition of all relocation
	types.
	* arc.h: Changed macros for the newly supported ARC cpus.  Altered
	enum defining the supported relocations.
	* common.h: Changed EM_ARC_A5 definition to EM_ARC_COMPACT. Added
	macro for EM_ARC_COMPACT2.
        * arc-func.h: New file.
        * arc.h: Likewise.

1 files changed, 58 insertions, 32 deletions

diff --git a/opcodes/arc-ext.h b/opcodes/arc-ext.h
index 8a7d7c4019a..9eb46ae4797 100644
--- a/opcodes/arc-ext.h
+++ b/opcodes/arc-ext.h
@@ -1,4 +1,4 @@
-/* ARC target-dependent stuff. Extension data structures.
+/* ARC target-dependent stuff.  Extension data structures.
    Copyright (C) 1995-2015 Free Software Foundation, Inc.
 
    This file is part of libopcodes.
@@ -18,46 +18,72 @@
    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
    MA 02110-1301, USA.  */
 
-#ifndef ARCEXT_H
-#define ARCEXT_H
+/*This header file defines a table of extensions to the ARC processor
+  architecture.  These extensions are read from the '.arcextmap' or
+  '.gnu.linkonce.arcextmap.<type>.<N>' sections in the ELF file which
+  is identified by the bfd parameter to the build_ARC_extmap function.
 
-enum {EXT_INSTRUCTION   = 0,
-      EXT_CORE_REGISTER = 1,
-      EXT_AUX_REGISTER  = 2,
-      EXT_COND_CODE     = 3};
+  These extensions may include:
+	 core registers
+	 auxiliary registers
+	 instructions
+	 condition codes
 
-enum {NUM_EXT_INST = (0x1f-0x10+1) + (0x3f-0x09+1)};
-enum {NUM_EXT_CORE = 59-32+1};
-enum {NUM_EXT_COND = 0x1f-0x10+1};
+  Once the table has been constructed, accessor functions may be used
+  to retrieve information from it.
 
-struct ExtInstruction
-{
-  char flags;
-  char *name;
-};
+  The build_ARC_extmap constructor function build_ARC_extmap may be
+  called as many times as required; it will re-initialize the table
+  each time.  */
+
+#ifndef ARC_EXTENSIONS_H
+#define ARC_EXTENSIONS_H
+
+#define IGNORE_FIRST_OPD 1
+
+/* Define this if we do not want to encode instructions based on the
+   ARCompact Programmer's Reference.  */
+#define UNMANGLED
 
-struct ExtAuxRegister
+
+/* This defines the kinds of extensions which may be read from the
+   ections in the executable files.  */
+enum ExtOperType
 {
-  long address;
-  char *name;
-  struct ExtAuxRegister *next;
+  EXT_INSTRUCTION	     = 0,
+  EXT_CORE_REGISTER	     = 1,
+  EXT_AUX_REGISTER	     = 2,
+  EXT_COND_CODE		     = 3,
+  EXT_INSTRUCTION32	     = 4,
+  EXT_AC_INSTRUCTION	     = 4,
+  EXT_REMOVE_CORE_REG	     = 5,
+  EXT_LONG_CORE_REGISTER     = 6,
+  EXT_AUX_REGISTER_EXTENDED  = 7,
+  EXT_INSTRUCTION32_EXTENDED = 8,
+  EXT_CORE_REGISTER_CLASS    = 9
 };
 
-struct arcExtMap
+
+enum ExtReadWrite
 {
-  struct ExtAuxRegister *auxRegisters;
-  struct ExtInstruction *instructions[NUM_EXT_INST];
-  char *coreRegisters[NUM_EXT_CORE];
-  char *condCodes[NUM_EXT_COND];
+  REG_INVALID,
+  REG_READ,
+  REG_WRITE,
+  REG_READWRITE
 };
 
-extern int arcExtMap_add(void*, unsigned long);
-extern const char *arcExtMap_coreRegName(int);
-extern const char *arcExtMap_auxRegName(long);
-extern const char *arcExtMap_condCodeName(int);
-extern const char *arcExtMap_instName(int, int, int*);
-extern void build_ARC_extmap(bfd *);
 
-#define IGNORE_FIRST_OPD 1
+/* Constructor function.  */
+extern void build_ARC_extmap (bfd *);
+
+/* Accessor functions.  */
+extern enum ExtReadWrite arcExtMap_coreReadWrite (int);
+extern const char * arcExtMap_coreRegName (int);
+extern const char * arcExtMap_auxRegName (long);
+extern const char * arcExtMap_condCodeName (int);
+extern const char * arcExtMap_instName (int, int, int *);
+
+/* Dump function (for debugging).  */
+extern void dump_ARC_extmap (void);
 
-#endif
+#endif /* ARC_EXTENSIONS_H */