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, 258 insertions, 0 deletions

diff --git a/binutils/readelf.c b/binutils/readelf.c
index b9b06a1..7d228d6 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -131,6 +131,7 @@
 #include "elf/moxie.h"
 #include "elf/mt.h"
 #include "elf/msp430.h"
+#include "elf/nds32.h"
 #include "elf/nios2.h"
 #include "elf/or32.h"
 #include "elf/pj.h"
@@ -626,6 +627,7 @@ guess_is_rela (unsigned int e_machine)
     case EM_MSP430:
     case EM_MSP430_OLD:
     case EM_MT:
+    case EM_NDS32:
     case EM_NIOS32:
     case EM_PPC64:
     case EM_PPC:
@@ -1144,6 +1146,10 @@ dump_relocations (FILE * file,
 	  rtype = elf_msp430_reloc_type (type);
 	  break;
 
+	case EM_NDS32:
+	  rtype = elf_nds32_reloc_type (type);
+	  break;
+
 	case EM_PPC:
 	  rtype = elf_ppc_reloc_type (type);
 	  break;
@@ -2307,6 +2313,207 @@ decode_ARM_machine_flags (unsigned e_flags, char buf[])
     strcat (buf,_(", <unknown>"));
 }
 
+static void
+decode_NDS32_machine_flags (unsigned e_flags, char buf[], size_t size)
+{
+  unsigned abi;
+  unsigned arch;
+  unsigned config;
+  unsigned version;
+  int has_fpu = 0;
+  int r = 0;
+
+  static const char *ABI_STRINGS[] =
+  {
+    "ABI v0", /* use r5 as return register; only used in N1213HC */
+    "ABI v1", /* use r0 as return register */
+    "ABI v2", /* use r0 as return register and don't reserve 24 bytes for arguments */
+    "ABI v2fp", /* for FPU */
+    "AABI"
+  };
+  static const char *VER_STRINGS[] =
+  {
+    "Andes ELF V1.3 or older",
+    "Andes ELF V1.3.1",
+    "Andes ELF V1.4"
+  };
+  static const char *ARCH_STRINGS[] =
+  {
+    "",
+    "Andes Star v1.0",
+    "Andes Star v2.0",
+    "Andes Star v3.0",
+    "Andes Star v3.0m"
+  };
+
+  abi = EF_NDS_ABI & e_flags;
+  arch = EF_NDS_ARCH & e_flags;
+  config = EF_NDS_INST & e_flags;
+  version = EF_NDS32_ELF_VERSION & e_flags;
+
+  memset (buf, 0, size);
+
+  switch (abi)
+    {
+    case E_NDS_ABI_V0:
+    case E_NDS_ABI_V1:
+    case E_NDS_ABI_V2:
+    case E_NDS_ABI_V2FP:
+    case E_NDS_ABI_AABI:
+      /* In case there are holes in the array.  */
+      r += snprintf (buf + r, size - r, ", %s", ABI_STRINGS[abi >> EF_NDS_ABI_SHIFT]);
+      break;
+
+    default:
+      r += snprintf (buf + r, size - r, ", <unrecognized ABI>");
+      break;
+    }
+
+  switch (version)
+    {
+    case E_NDS32_ELF_VER_1_2:
+    case E_NDS32_ELF_VER_1_3:
+    case E_NDS32_ELF_VER_1_4:
+      r += snprintf (buf + r, size - r, ", %s", VER_STRINGS[version >> EF_NDS32_ELF_VERSION_SHIFT]);
+      break;
+
+    default:
+      r += snprintf (buf + r, size - r, ", <unrecognized ELF version number>");
+      break;
+    }
+
+  if (E_NDS_ABI_V0 == abi)
+    {
+      /* OLD ABI; only used in N1213HC, has performance extension 1.  */
+      r += snprintf (buf + r, size - r, ", Andes Star v1.0, N1213HC, MAC, PERF1");
+      if (arch == E_NDS_ARCH_STAR_V1_0)
+	r += snprintf (buf + r, size -r, ", 16b"); /* has 16-bit instructions */
+      return;
+    }
+
+  switch (arch)
+    {
+    case E_NDS_ARCH_STAR_V1_0:
+    case E_NDS_ARCH_STAR_V2_0:
+    case E_NDS_ARCH_STAR_V3_0:
+    case E_NDS_ARCH_STAR_V3_M:
+      r += snprintf (buf + r, size - r, ", %s", ARCH_STRINGS[arch >> EF_NDS_ARCH_SHIFT]);
+      break;
+
+    default:
+      r += snprintf (buf + r, size - r, ", <unrecognized architecture>");
+      /* ARCH version determines how the e_flags are interpreted.
+	 If it is unknown, we cannot proceed.  */
+      return;
+    }
+
+  /* Newer ABI; Now handle architecture specific flags.  */
+  if (arch == E_NDS_ARCH_STAR_V1_0)
+    {
+      if (config & E_NDS32_HAS_MFUSR_PC_INST)
+	r += snprintf (buf + r, size -r, ", MFUSR_PC");
+
+      if (!(config & E_NDS32_HAS_NO_MAC_INST))
+	r += snprintf (buf + r, size -r, ", MAC");
+
+      if (config & E_NDS32_HAS_DIV_INST)
+	r += snprintf (buf + r, size -r, ", DIV");
+
+      if (config & E_NDS32_HAS_16BIT_INST)
+	r += snprintf (buf + r, size -r, ", 16b");
+    }
+  else
+    {
+      if (config & E_NDS32_HAS_MFUSR_PC_INST)
+	{
+	  if (version <= E_NDS32_ELF_VER_1_3)
+	    r += snprintf (buf + r, size -r, ", [B8]");
+	  else
+	    r += snprintf (buf + r, size -r, ", EX9");
+	}
+
+      if (config & E_NDS32_HAS_MAC_DX_INST)
+	r += snprintf (buf + r, size -r, ", MAC_DX");
+
+      if (config & E_NDS32_HAS_DIV_DX_INST)
+	r += snprintf (buf + r, size -r, ", DIV_DX");
+
+      if (config & E_NDS32_HAS_16BIT_INST)
+	{
+	  if (version <= E_NDS32_ELF_VER_1_3)
+	    r += snprintf (buf + r, size -r, ", 16b");
+	  else
+	    r += snprintf (buf + r, size -r, ", IFC");
+	}
+    }
+
+  if (config & E_NDS32_HAS_EXT_INST)
+    r += snprintf (buf + r, size -r, ", PERF1");
+
+  if (config & E_NDS32_HAS_EXT2_INST)
+    r += snprintf (buf + r, size -r, ", PERF2");
+
+  if (config & E_NDS32_HAS_FPU_INST)
+    {
+      has_fpu = 1;
+      r += snprintf (buf + r, size -r, ", FPU_SP");
+    }
+
+  if (config & E_NDS32_HAS_FPU_DP_INST)
+    {
+      has_fpu = 1;
+      r += snprintf (buf + r, size -r, ", FPU_DP");
+    }
+
+  if (config & E_NDS32_HAS_FPU_MAC_INST)
+    {
+      has_fpu = 1;
+      r += snprintf (buf + r, size -r, ", FPU_MAC");
+    }
+
+  if (has_fpu)
+    {
+      switch ((config & E_NDS32_FPU_REG_CONF) >> E_NDS32_FPU_REG_CONF_SHIFT)
+	{
+	case E_NDS32_FPU_REG_8SP_4DP:
+	  r += snprintf (buf + r, size -r, ", FPU_REG:8/4");
+	  break;
+	case E_NDS32_FPU_REG_16SP_8DP:
+	  r += snprintf (buf + r, size -r, ", FPU_REG:16/8");
+	  break;
+	case E_NDS32_FPU_REG_32SP_16DP:
+	  r += snprintf (buf + r, size -r, ", FPU_REG:32/16");
+	  break;
+	case E_NDS32_FPU_REG_32SP_32DP:
+	  r += snprintf (buf + r, size -r, ", FPU_REG:32/32");
+	  break;
+	}
+    }
+
+  if (config & E_NDS32_HAS_AUDIO_INST)
+    r += snprintf (buf + r, size -r, ", AUDIO");
+
+  if (config & E_NDS32_HAS_STRING_INST)
+    r += snprintf (buf + r, size -r, ", STR");
+
+  if (config & E_NDS32_HAS_REDUCED_REGS)
+    r += snprintf (buf + r, size -r, ", 16REG");
+
+  if (config & E_NDS32_HAS_VIDEO_INST)
+    {
+      if (version <= E_NDS32_ELF_VER_1_3)
+	r += snprintf (buf + r, size -r, ", VIDEO");
+      else
+	r += snprintf (buf + r, size -r, ", SATURATION");
+    }
+
+  if (config & E_NDS32_HAS_ENCRIPT_INST)
+    r += snprintf (buf + r, size -r, ", ENCRP");
+
+  if (config & E_NDS32_HAS_L2C_INST)
+    r += snprintf (buf + r, size -r, ", L2C");
+}
+
 static char *
 get_machine_flags (unsigned e_flags, unsigned e_machine)
 {
@@ -2649,6 +2856,10 @@ get_machine_flags (unsigned e_flags, unsigned e_machine)
 	    }
 	  break;
 
+	case EM_NDS32:
+	  decode_NDS32_machine_flags (e_flags, buf, sizeof buf);
+	  break;
+
 	case EM_SH:
 	  switch ((e_flags & EF_SH_MACH_MASK))
 	    {
@@ -10261,6 +10472,8 @@ is_32bit_abs_reloc (unsigned int reloc_type)
       return reloc_type == 1; /* R_MSP430_32 or R_MSP320_ABS32.  */
     case EM_MT:
       return reloc_type == 2; /* R_MT_32.  */
+    case EM_NDS32:
+      return reloc_type == 20; /* R_NDS32_RELA.  */
     case EM_ALTERA_NIOS2:
       return reloc_type == 12; /* R_NIOS2_BFD_RELOC_32.  */
     case EM_NIOS32:
@@ -10514,6 +10727,8 @@ is_16bit_abs_reloc (unsigned int reloc_type)
 	return reloc_type == 2; /* R_MSP430_ABS16.  */
     case EM_MSP430_OLD:
       return reloc_type == 5; /* R_MSP430_16_BYTE.  */
+    case EM_NDS32:
+      return reloc_type == 19; /* R_NDS32_RELA.  */
     case EM_ALTERA_NIOS2:
       return reloc_type == 13; /* R_NIOS2_BFD_RELOC_16.  */
     case EM_NIOS32:
@@ -10577,6 +10792,12 @@ is_none_reloc (unsigned int reloc_type)
       return reloc_type == 0;
     case EM_AARCH64:
       return reloc_type == 0 || reloc_type == 256;
+    case EM_NDS32:
+      return (reloc_type == 0       /* R_XTENSA_NONE.  */
+	      || reloc_type == 204  /* R_NDS32_DIFF8.  */
+	      || reloc_type == 205  /* R_NDS32_DIFF16.  */
+	      || reloc_type == 206  /* R_NDS32_DIFF32.  */
+	      || reloc_type == 207  /* R_NDS32_ULEB128.  */);
     case EM_XTENSA_OLD:
     case EM_XTENSA:
       return (reloc_type == 0      /* R_XTENSA_NONE.  */
@@ -12982,6 +13203,40 @@ process_mips_specific (FILE * file)
 }
 
 static int
+process_nds32_specific (FILE * file)
+{
+  Elf_Internal_Shdr *sect = NULL;
+
+  sect = find_section (".nds32_e_flags");
+  if (sect != NULL)
+    {
+      unsigned int *flag;
+
+      printf ("\nNDS32 elf flags section:\n");
+      flag = get_data (NULL, file, sect->sh_offset, 1,
+		       sect->sh_size, _("NDS32 elf flags section"));
+
+      switch ((*flag) & 0x3)
+	{
+	case 0:
+	  printf ("(VEC_SIZE):\tNo entry.\n");
+	  break;
+	case 1:
+	  printf ("(VEC_SIZE):\t4 bytes\n");
+	  break;
+	case 2:
+	  printf ("(VEC_SIZE):\t16 bytes\n");
+	  break;
+	case 3:
+	  printf ("(VEC_SIZE):\treserved\n");
+	  break;
+	}
+    }
+
+  return TRUE;
+}
+
+static int
 process_gnu_liblist (FILE * file)
 {
   Elf_Internal_Shdr * section;
@@ -13807,6 +14062,9 @@ process_arch_specific (FILE * file)
     case EM_MIPS_RS3_LE:
       return process_mips_specific (file);
       break;
+    case EM_NDS32:
+      return process_nds32_specific (file);
+      break;
     case EM_PPC:
       return process_power_specific (file);
       break;