Add support for Andes NDS32:

BFD:
	* Makefile.am (BFD32_BACKENDS, BFD32_BACKENDS_CFILES): Add nds32
	files.
	* Makefile.in: Regenerate.
	* archures.c (bfd_nds32_arch): Add nds32 target.
	* bfd-in2.h: Regenerate.
	* config.bfd (nds32*le-*-linux): Add bfd_elf32_nds32lelin_vec
	and bfd_elf32_nds32belin_vec.
	(nds32*be-*-linux*): Likewise.
	(nds32*le-*-*): Add bfd_elf32_nds32le_vec and bfd_elf32_nds32be_vec.
	(nds32*be-*-*): Likewise.
	* configure.in (bfd_elf32_nds32be_vec): Add elf32-nds32.lo.
	(bfd_elf32_nds32le_vec): Likewise.
	(bfd_elf32_nds32belin_vec): Likewise.
	(bfd_elf32_nds32lelin_vec): Likewise.
	* configure: Regenerate.
	* cpu-nds32.c: New file for nds32.
	* elf-bfd.h: Add NDS32_ELF_DATA.
	* elf32-nds32.c: New file for nds32.
	* elf32-nds32.h: New file for nds32.
	* libbfd.h: Regenerate.
	* reloc.c: Add relocations for nds32.
	* targets.c (bfd_elf32_nds32be_vec): New declaration for nds32.
	(bfd_elf32_nds32le_vec): Likewise.
	(bfd_elf32_nds32belin_vec): Likewise.
	(bfd_elf32_nds32lelin_vec): Likewise.

BINUTILS:
	* readelf.c: Include elf/nds32.h
	(guess_is_rela): Add case for EM_NDS32.
	(dump_relocations): Add case for EM_NDS32.
	(decode_NDS32_machine_flags): New.
	(get_machine_flags): Add case for EM_NDS32.
	(is_32bit_abs_reloc): Likewise.
	(is_16bit_abs_reloc): Likewise.
	(process_nds32_specific): New.
	(process_arch_specific): Add case for EM_NDS32.
	* NEWS: Announce Andes nds32 support.
	* MAINTAINERS: Add nds32 maintainers.
  TESTSUITE:
	* binutils-all/objdump.exp: Add NDS32 cpu.
	* binutils-all/readelf.r: Skip extra reloc created by NDS32.

GAS:
	* Makefile.am (TARGET_CPU_CFILES): Add config/tc-nds32.c.
	(TARGET_CPU_HFILES): Add config/tc-nds32.h.
	* Makefile.in: Regenerate.
	* configure.in (nds32): Add nds32 target extension config support.
	* configure.tgt : Add case for nds32-*-elf* and nds32-*-linux*.
	* configure: Regenerate.
	* config/tc-nds32.c: New file for nds32.
	* config/tc-nds32.h: New file for nds32.
	* doc/Makefile.am (CPU_DOCS): Add c-nds32.texi.
	* doc/Makefile.in: Regenerate.
	* doc/as.texinfo: Add nds32 options.
	* doc/all.texi: Set NDS32.
	* doc/c-nds32.texi: New file dor nds32 document.
	* NEWS: Announce Andes nds32 support.
  TESTSUITE:
	* gas/all/gas.exp: Add expected failures for NDS32.
	* gas/elf/elf.exp: Likewise.
	* gas/lns/lns.exp: Use alternate test.
	* gas/macros/irp.d: Skip for NDS32.
	* gas/macros/macros.exp: Skip some tests for the NDS32.
	* gas/macros/rept.d: Skip for NDS32.
	* gas/macros/test3.d: Skip for NDS32.
	* gas/nds32: New directory.
	* gas/nds32/alu-1.s: New test.
	* gas/nds32/alu-1.d: Likewise.
	* gas/nds32/alu-2.s: Likewise.
	* gas/nds32/alu-2.d: Likewise.
	* gas/nds32/br-1.d: Likewise.
	* gas/nds32/br-1.s: Likewise.
	* gas/nds32/br-2.d: Likewise.
	* gas/nds32/br-2.s: Likewise.
	* gas/nds32/ji-jr.d: Likewise.
	* gas/nds32/ji-jr.s: Likewise.
	* gas/nds32/ls.d: Likewise.
	* gas/nds32/ls.s: Likewise.
	* gas/nds32/lsi.d: Likewise.
	* gas/nds32/lsi.s: Likewise.
	* gas/nds32/to-16bit-v1.d: Likewise.
	* gas/nds32/to-16bit-v1.s: Likewise.
	* gas/nds32/to-16bit-v2.d: Likewise.
	* gas/nds32/to-16bit-v2.s: Likewise.
	* gas/nds32/to-16bit-v3.d: Likewise.
	* gas/nds32/to-16bit-v3.s: Likewise.
	* gas/nds32/nds32.exp: New test driver.

LD:
	* Makefile.am (ALL_EMULATION_SOURCES): Add nds32 target.
	* Makefile.in: Regenerate.
	* configure.tgt: Add case for nds32*le-*-elf*, nds32*be-*-elf*,
	nds32*le-*-linux-gnu*, and nds32*be-*-linux-gnu*.
	* emulparams/nds32belf.sh: New file for nds32.
	* emulparams/nds32belf_linux.sh: Likewise.
	* emulparams/nds32belf16m.sh: Likewise.
	* emulparams/nds32elf.sh: Likewise.
	* emulparams/nds32elf_linux.sh: Likewise.
	* emulparams/nds32elf16m.sh: Likewise.
	* emultempl/nds32elf.em: Likewise.
	* scripttempl/nds32elf.sc}: Likewise.
	* gen-doc.texi: Set NDS32.
	* ld.texinfo: Set NDS32.
	* NEWS: Announce Andes nds32 support.
  TESTSUITE:
	* lib/ld-lib.exp: Add NDS32 to list of targets that do not support
	shared library generation.
	* ld-nds32: New directory.
	* ld-nds32/branch.d: New test.
	* ld-nds32/branch.ld: New test.
	* ld-nds32/branch.s: New test.
	* ld-nds32/diff.d: New test.
	* ld-nds32/diff.ld: New test.
	* ld-nds32/diff.s: New test.
	* ld-nds32/gp.d: New test.
	* ld-nds32/gp.ld: New test.
	* ld-nds32/gp.s: New test.
	* ld-nds32/imm.d: New test.
	* ld-nds32/imm.ld: New test.
	* ld-nds32/imm.s: New test.
	* ld-nds32/imm_symbol.s: New test.
	* ld-nds32/relax_jmp.d: New test.
	* ld-nds32/relax_jmp.ld: New test.
	* ld-nds32/relax_jmp.s: New test.
	* ld-nds32/relax_load_store.d: New test.
	* ld-nds32/relax_load_store.ld: New test.
	* ld-nds32/relax_load_store.s: New test.
	* ld-nds32/nds32.exp: New file.

OPCODES:
	* Makefile.am (TARGET_LIBOPCODES_CFILES): Add nds32-asm.c
	and nds32-dis.c.
	* Makefile.in: Regenerate.
	* configure.in: Add case for bfd_nds32_arch.
	* configure: Regenerate.
	* disassemble.c (ARCH_nds32): Define.
	* nds32-asm.c: New file for nds32.
	* nds32-asm.h: New file for nds32.
	* nds32-dis.c: New file for nds32.
	* nds32-opc.h: New file for nds32.

INCLUDE:
	* dis-asm.h (print_insn_nds32): Add nds32 target.
	* elf/nds32.h: New file for nds32.
	* opcode/nds32.h: New file for nds32.

1 files changed, 264 insertions, 0 deletions

diff --git a/gas/config/tc-nds32.h b/gas/config/tc-nds32.h
new file mode 100644
index 0000000..255fbae
--- /dev/null
+++ b/gas/config/tc-nds32.h
@@ -0,0 +1,264 @@
+/* tc-nds32.h -- Header file for tc-nds32.c.
+   Copyright (C) 2012-2013 Free Software Foundation, Inc.
+   Contributed by Andes Technology Corporation.
+
+   This file is part of GAS.
+
+   GAS 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 3, or (at your option)
+   any later version.
+
+   GAS 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 GAS; see the file COPYING.  If not, write to the Free
+   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+#ifndef TC_NDS32
+#define TC_NDS32
+
+#include "bfd_stdint.h"
+
+#define LISTING_HEADER \
+  (target_big_endian ? "NDS32 GAS" : "NDS32 GAS Little Endian")
+
+/* The target BFD architecture.  */
+#define TARGET_ARCH		bfd_arch_nds32
+
+/* mapping to mach_table[5] */
+#define ISA_V1      bfd_mach_n1h
+#define ISA_V2      bfd_mach_n1h_v2
+#define ISA_V3      bfd_mach_n1h_v3
+#define ISA_V3M     bfd_mach_n1h_v3m
+
+/* Default to big endian. Please note that for Andes architecture,
+   instructions are always in big-endian format.  */
+#ifndef TARGET_BYTES_BIG_ENDIAN
+#define TARGET_BYTES_BIG_ENDIAN	1
+#endif
+
+/* This is used to construct expressions out of @GOTOFF, @PLT and @GOT
+   symbols.  The relocation type is stored in X_md.  */
+#define O_PIC_reloc O_md1
+
+/* as.c.  */
+/* Extend GAS command line option handling capability.  */
+extern int nds32_parse_option (int, char *);
+extern void nds32_after_parse_args (void);
+/* The endianness of the target format may change based on command
+   line arguments.  */
+extern const char * nds32_target_format (void);
+
+#define md_parse_option(optc, optarg)	nds32_parse_option (optc, optarg)
+#define md_after_parse_args()		nds32_after_parse_args ()
+#define TARGET_FORMAT nds32_target_format()
+
+/* expr.c */
+extern int nds32_parse_name (char const *, expressionS *, enum expr_mode, char *);
+extern bfd_boolean nds32_allow_local_subtract (expressionS *, expressionS *, segT);
+#define md_parse_name(name, exprP, mode, nextcharP) \
+	nds32_parse_name (name, exprP, mode, nextcharP)
+#define md_allow_local_subtract(lhs,rhs,sect)	nds32_allow_local_subtract (lhs, rhs, sect)
+
+/* dwarf2dbg.c.  */
+#define DWARF2_USE_FIXED_ADVANCE_PC		1
+
+/* write.c.  */
+extern long nds32_pcrel_from_section (struct fix *, segT);
+extern bfd_boolean nds32_fix_adjustable (struct fix *);
+extern void nds32_frob_file (void);
+extern void nds32_post_relax_hook (void);
+extern void nds32_frob_file_before_fix (void);
+extern void elf_nds32_final_processing (void);
+extern int nds32_validate_fix_sub (struct fix *, segT);
+extern int nds32_force_relocation (struct fix *);
+extern void nds32_set_section_relocs (asection *, arelent ** , unsigned int);
+
+/* Fill in rs_align_code fragments.  TODO: Review this.  */
+extern void nds32_handle_align (fragS *);
+extern int nds32_relax_frag (segT, fragS *, long);
+extern int tc_nds32_regname_to_dw2regnum (char *);
+extern void tc_nds32_frame_initial_instructions (void);
+
+#define MD_PCREL_FROM_SECTION(fix, sect)	nds32_pcrel_from_section (fix, sect)
+#define TC_FINALIZE_SYMS_BEFORE_SIZE_SEG	0
+#define tc_fix_adjustable(FIX)			nds32_fix_adjustable (FIX)
+#define md_apply_fix(fixP, addn, seg)		nds32_apply_fix (fixP, addn, seg)
+#define md_post_relax_hook			nds32_post_relax_hook ()
+#define tc_frob_file_before_fix()		nds32_frob_file_before_fix ()
+#define elf_tc_final_processing()		elf_nds32_final_processing ()
+/* For DIFF relocations.  The default behavior is inconsistent with the
+   asm internal document.  */
+#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC)		\
+  (! SEG_NORMAL (SEC) || TC_FORCE_RELOCATION (FIX))
+#define TC_FORCE_RELOCATION(fix)		nds32_force_relocation (fix)
+#define TC_VALIDATE_FIX_SUB(FIX,SEG)		nds32_validate_fix_sub (FIX,SEG)
+#define SET_SECTION_RELOCS(sec, relocs, n)	nds32_set_section_relocs (sec, relocs, n)
+/* Values passed to md_apply_fix don't include the symbol value.  */
+#define MD_APPLY_SYM_VALUE(FIX)			0
+#define HANDLE_ALIGN(f)				nds32_handle_align (f)
+#undef DIFF_EXPR_OK				/* They should be fixed in linker.  */
+#define md_relax_frag(segment, fragP, stretch)	nds32_relax_frag (segment, fragP, stretch)
+#define WORKING_DOT_WORD			/* We don't need to handle .word strangely.  */
+/* Using to chain fixup with previous fixup.  */
+#define TC_FIX_TYPE struct fix *
+#define TC_INIT_FIX_DATA(fixP)		\
+  do					\
+    {					\
+      fixP->tc_fix_data = NULL;		\
+    }					\
+  while (0)
+
+/* read.c.  */
+/* Extend GAS macro handling capability.  */
+extern void nds32_macro_start (void);
+extern void nds32_macro_end (void);
+extern void nds32_macro_info (void *);
+extern void nds32_start_line_hook (void);
+extern void nds32_elf_section_change_hook (void);
+extern void md_begin (void);
+extern void md_end (void);
+extern int nds32_start_label (int, int);
+extern void nds32_cleanup (void);
+extern void nds32_flush_pending_output (void);
+extern void nds32_cons_align (int);
+extern void nds32_check_label (symbolS *);
+extern void nds32_frob_label (symbolS *);
+extern void nds32_pre_do_align (int, char *, int, int);
+extern void nds32_do_align (int);
+
+#define md_macro_start()			nds32_macro_start ()
+#define md_macro_end()				nds32_macro_end ()
+#define md_macro_info(args)			nds32_macro_info (args)
+#define TC_START_LABEL(C, S, STR)		(C == ':' && nds32_start_label (0, 0))
+#define tc_check_label(label)			nds32_check_label (label)
+#define tc_frob_label(label)			nds32_frob_label (label)
+#define md_end					md_end
+#define md_start_line_hook()			nds32_start_line_hook ()
+#define md_cons_align(n)			nds32_cons_align (n)
+/* COLE: TODO: Review md_do_align.  */
+#define md_do_align(N, FILL, LEN, MAX, LABEL)	\
+  nds32_pre_do_align (N, FILL, LEN, MAX);	\
+  if ((N) > 1 && (subseg_text_p (now_seg)	\
+      || strncmp (now_seg->name, ".gcc_except_table", sizeof(".gcc_except_table") - 1) == 0)) \
+    nds32_do_align (N);				\
+  goto LABEL;
+#define md_elf_section_change_hook()		nds32_elf_section_change_hook ()
+#define md_flush_pending_output()		nds32_flush_pending_output ()
+#define md_cleanup()				nds32_cleanup ()
+#define LOCAL_LABELS_FB				1 /* Permit temporary numeric labels.  */
+
+/* frags.c.  */
+struct nds32_frag_type
+{
+  relax_substateT flag;
+  struct nds32_opcode *opcode;
+  uint32_t insn;
+  /* To Save previos label fixup if existence.  */
+  struct fix *fixup;
+};
+
+extern void nds32_frag_init (fragS *);
+
+#define TC_FRAG_TYPE				struct nds32_frag_type
+#define TC_FRAG_INIT(fragP)			nds32_frag_init (fragP)
+
+/* CFI directive.  */
+extern void nds32_elf_frame_initial_instructions (void);
+extern int tc_nds32_regname_to_dw2regnum (char *);
+
+#define TARGET_USE_CFIPOP			1
+#define DWARF2_DEFAULT_RETURN_COLUMN		30
+#define DWARF2_CIE_DATA_ALIGNMENT		-4
+#define DWARF2_LINE_MIN_INSN_LENGTH		2
+
+#define tc_regname_to_dw2regnum			tc_nds32_regname_to_dw2regnum
+#define tc_cfi_frame_initial_instructions	tc_nds32_frame_initial_instructions
+
+/* COLE: TODO: Review These. They seem to be obsoleted.  */
+#if 1
+#define TC_RELOC_RTSYM_LOC_FIXUP(FIX)				\
+   ((FIX)->fx_addsy == NULL					\
+    || (! S_IS_EXTERNAL ((FIX)->fx_addsy)			\
+	&& ! S_IS_WEAK ((FIX)->fx_addsy)			\
+	&& S_IS_DEFINED ((FIX)->fx_addsy)			\
+	&& ! S_IS_COMMON ((FIX)->fx_addsy)))
+#define TC_HANDLES_FX_DONE
+/* This arranges for gas/write.c to not apply a relocation if
+   obj_fix_adjustable() says it is not adjustable.  */
+#define TC_FIX_ADJUSTABLE(fixP) obj_fix_adjustable (fixP)
+#endif
+
+/* Because linker may relax the code, assemble-time expression
+   optimization is not allowed.  */
+#define md_allow_eh_opt 0
+
+/* For nds32 relax.  */
+enum nds32_br_range
+{
+  BR_RANGE_S256 = 0,
+  BR_RANGE_S16K,
+  BR_RANGE_S64K,
+  BR_RANGE_S16M,
+  BR_RANGE_U4G,
+  BR_RANGE_NUM
+};
+
+enum nds32_ramp
+{
+  NDS32_CREATE_LABLE = 1,
+  NDS32_RELAX = 2,
+  NDS32_ORIGIN = 4,
+  NDS32_CONVERT = 8
+};
+
+typedef struct nds32_relax_fixup_info
+{
+  int offset;
+  int size;
+  /* Reverse branch has to jump to the end of instruction pattern.  */
+  int ramp;
+  enum bfd_reloc_code_real r_type;
+} nds32_relax_fixup_info_t;
+
+typedef struct nds32_cond_field
+{
+  int offset;
+  int bitpos; /* Register position.  */
+  int bitmask; /* Number of register bits.  */
+} nds32_cond_field_t;
+
+/* The max relaxation pattern is 20-bytes including the nop.  */
+#define NDS32_MAXCHAR 20
+/* In current, the max entend number of instruction for one pseudo instruction
+   is 4, but its number of relocation may be 5.  */
+#define MAX_RELAX_NUM 8
+
+typedef struct nds32_relax_info
+{
+  /* Opcode for the instruction.  */
+  const char *opcode;
+  enum nds32_br_range br_range;
+  nds32_cond_field_t cond_field[MAX_RELAX_NUM]; /* TODO: Reuse nds32_field?  */
+  /* Code sequences for different branch range.  */
+  uint32_t relax_code_seq[BR_RANGE_NUM][MAX_RELAX_NUM];
+  nds32_cond_field_t relax_code_condition[BR_RANGE_NUM][MAX_RELAX_NUM];
+  int relax_code_size[BR_RANGE_NUM];
+  int relax_branch_isize[BR_RANGE_NUM];
+  nds32_relax_fixup_info_t relax_fixup[BR_RANGE_NUM][MAX_RELAX_NUM];
+} relax_info_t;
+
+/* Relocation table.  */
+struct nds32_relocation_map
+{
+  unsigned int main_type;
+  /* Number of instructions, {relocations type, instruction type}.  */
+  unsigned int reloc_insn[6][6][3];
+};
+
+#endif /* TC_NDS32 */