bfd:

	* Makefile.am (ALL_MACHINES): Add cpu-tic6x.lo.
	(ALL_MACHINES_CFILES): Add cpu-tic6x.c.
	(BFD32_BACKENDS): Add elf32-tic6x.lo.
	(BFD32_BACKENDS_CFILES): Add elf32-tic6x.c.
	* Makefile.in: Regenerate.
	* archures.c (bfd_arch_tic6x, bfd_tic6x_arch): New.
	(bfd_archures_list): Update.
	* config.bfd (tic6x-*-elf): New.
	* configure.in (bfd_elf32_tic6x_be_vec, bfd_elf32_tic6x_le_vec):
	New.
	* configure: Regenerate.
	* cpu-tic6x.c, elf32-tic6x.c: New.
	* reloc.c (BFD_RELOC_C6000_PCR_S21, BFD_RELOC_C6000_PCR_S12,
	BFD_RELOC_C6000_PCR_S10, BFD_RELOC_C6000_PCR_S7,
	BFD_RELOC_C6000_ABS_S16, BFD_RELOC_C6000_ABS_L16,
	BFD_RELOC_C6000_ABS_H16, BFD_RELOC_C6000_SBR_U15_B,
	BFD_RELOC_C6000_SBR_U15_H, BFD_RELOC_C6000_SBR_U15_W,
	BFD_RELOC_C6000_SBR_S16, BFD_RELOC_C6000_SBR_L16_B,
	BFD_RELOC_C6000_SBR_L16_H, BFD_RELOC_C6000_SBR_L16_W,
	BFD_RELOC_C6000_SBR_H16_B, BFD_RELOC_C6000_SBR_H16_H,
	BFD_RELOC_C6000_SBR_H16_W, BFD_RELOC_C6000_SBR_GOT_U15_W,
	BFD_RELOC_C6000_SBR_GOT_L16_W, BFD_RELOC_C6000_SBR_GOT_H16_W,
	BFD_RELOC_C6000_DSBT_INDEX, BFD_RELOC_C6000_PREL31,
	BFD_RELOC_C6000_COPY, BFD_RELOC_C6000_ALIGN,
	BFD_RELOC_C6000_FPHEAD, BFD_RELOC_C6000_NOCMP): New.
	* targets.c (bfd_elf32_tic6x_be_vec, bfd_elf32_tic6x_le_vec): New.
	(_bfd_target_vector): Update.
	* bfd-in2.h, libbfd.h: Regenerate.

binutils:
	* MAINTAINERS: Add self as TI C6X maintainer.
	* NEWS: Add news entry for TI C6X support.
	* readelf.c: Include elf/tic6x.h.
	(guess_is_rela): Handle EM_TI_C6000.
	(dump_relocations): Likewise.
	(get_tic6x_dynamic_type): New.
	(get_dynamic_type): Call it.
	(get_machine_flags): Handle EF_C6000_REL.
	(get_osabi_name): Handle machine-specific values only for relevant
	machines.  Handle C6X values.
	(get_tic6x_segment_type): New.
	(get_segment_type): Call it.
	(get_tic6x_section_type_name): New.
	(get_section_type_name): Call it.
	(is_32bit_abs_reloc, is_16bit_abs_reloc, is_none_reloc): Handle
	EM_TI_C6000.

gas:
	* Makefile.am (TARGET_CPU_CFILES): Add config/tc-tic6x.c.
	(TARGET_CPU_HFILES): Add config/tc-tic6x.h.
	* Makefile.in: Regenerate.
	* NEWS: Add news entry for TI C6X support.
	* app.c (do_scrub_chars): Handle "||^" for TI C6X.  Handle
	TC_PREDICATE_START_CHAR and TC_PREDICATE_END_CHAR.  Keep spaces in
	operands if TC_KEEP_OPERAND_SPACES.
	* configure.tgt (tic6x-*-*): New.
	* config/tc-ia64.h (TC_PREDICATE_START_CHAR,
	TC_PREDICATE_END_CHAR): Define.
	* config/tc-tic6x.c, config/tc-tic6x.h: New.
	* doc/Makefile.am (CPU_DOCS): Add c-tic6x.texi.
	* doc/Makefile.in: Regenerate.
	* doc/all.texi (TIC6X): Define.
	* doc/as.texinfo: Add TI C6X documentation.  Include c-tic6x.texi.
	* doc/c-tic6x.texi: New.

gas/testsuite:
	* gas/tic6x: New directory and testcases.

include:
	* dis-asm.h (print_insn_tic6x): Declare.

include/elf:
	* common.h (ELFOSABI_C6000_ELFABI, ELFOSABI_C6000_LINUX): Define.
	* tic6x.h: New.

include/opcode:
	* tic6x-control-registers.h, tic6x-insn-formats.h,
	tic6x-opcode-table.h, tic6x.h: New.

ld:
	* Makefile.am (ALL_EMULATIONS): Add eelf32_tic6x_be.o and
	eelf32_tic6x_le.o.
	(eelf32_tic6x_be.c, eelf32_tic6x_le.c): New.
	* NEWS: Add news entry for TI C6X support.
	* configure.tgt (tic6x-*-*): New.
	* emulparams/elf32_tic6x_be.sh, emulparams/elf32_tic6x_le.sh: New.

ld/testsuite:
	* ld-elf/flags1.d, ld-elf/merge.d: XFAIL for tic6x-*-*.
	* ld-elf/sec-to-seg.exp: Set B_test_same_seg to 0 for tic6x-*-*.
	* ld-tic6x: New directory and testcases.

opcodes:
	* Makefile.am (TARGET_LIBOPCODES_CFILES): Add tic6x-dis.c.
	* Makefile.in: Regenerate.
	* configure.in (bfd_tic6x_arch): New.
	* configure: Regenerate.
	* disassemble.c (ARCH_tic6x): Define if ARCH_all.
	(disassembler): Handle TI C6X.
	* tic6x-dis.c: New.

1 files changed, 1110 insertions, 0 deletions

diff --git a/opcodes/tic6x-dis.c b/opcodes/tic6x-dis.c
new file mode 100644
index 0000000..8032084
--- /dev/null
+++ b/opcodes/tic6x-dis.c
@@ -0,0 +1,1110 @@
+/* TI C6X disassembler.
+   Copyright 2010
+   Free Software Foundation, Inc.
+
+   This file is part of libopcodes.
+
+   This library 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 of the License, or
+   (at your option) any later version.
+
+   It 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., 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+#include "sysdep.h"
+#include "dis-asm.h"
+#include "opcode/tic6x.h"
+#include "libiberty.h"
+
+/* Define the instruction format table.  */
+const tic6x_insn_format tic6x_insn_format_table[tic6x_insn_format_max] =
+  {
+#define FMT(name, num_bits, cst_bits, mask, fields) \
+    { num_bits, cst_bits, mask, fields },
+#include "opcode/tic6x-insn-formats.h"
+#undef FMT
+  };
+
+/* Define the control register table.  */
+const tic6x_ctrl tic6x_ctrl_table[tic6x_ctrl_max] =
+  {
+#define CTRL(name, isa, rw, crlo, crhi_mask)	\
+    {						\
+      STRINGX(name),				\
+      CONCAT2(TIC6X_INSN_,isa),			\
+      CONCAT2(tic6x_rw_,rw),			\
+      crlo,					\
+      crhi_mask					\
+    },
+#include "opcode/tic6x-control-registers.h"
+#undef CTRL
+  };
+
+/* Define the opcode table.  */
+const tic6x_opcode tic6x_opcode_table[tic6x_opcode_max] =
+  {
+#define INSN(name, func_unit, format, type, isa, flags, fixed, ops, var) \
+    {									\
+      STRINGX(name),							\
+      CONCAT2(tic6x_func_unit_,func_unit),				\
+      CONCAT4(tic6x_insn_format_,func_unit,_,format),			\
+      CONCAT2(tic6x_pipeline_,type),					\
+      CONCAT2(TIC6X_INSN_,isa),						\
+      flags,								\
+      fixed,								\
+      ops,								\
+      var								\
+    },
+#define INSNE(name, e, func_unit, format, type, isa, flags, fixed, ops, var) \
+    {									\
+      STRINGX(name),							\
+      CONCAT2(tic6x_func_unit_,func_unit),				\
+      CONCAT4(tic6x_insn_format_,func_unit,_,format),			\
+      CONCAT2(tic6x_pipeline_,type),					\
+      CONCAT2(TIC6X_INSN_,isa),						\
+      flags,								\
+      fixed,								\
+      ops,								\
+      var								\
+    },
+#include "opcode/tic6x-opcode-table.h"
+#undef INSN
+#undef INSNE
+  };
+
+/* If instruction format FMT has a field FIELD, return a pointer to
+   the description of that field; otherwise return NULL.  */
+
+const tic6x_insn_field *
+tic6x_field_from_fmt (const tic6x_insn_format *fmt, tic6x_insn_field_id field)
+{
+  unsigned int f;
+
+  for (f = 0; f < fmt->num_fields; f++)
+    if (fmt->fields[f].field_id == field)
+      return &fmt->fields[f];
+
+  return NULL;
+}
+
+/* Extract the bits corresponding to FIELD from OPCODE.  */
+
+static unsigned int
+tic6x_field_bits (unsigned int opcode, const tic6x_insn_field *field)
+{
+  return (opcode >> field->low_pos) & ((1u << field->width) - 1);
+}
+
+/* Extract a 32-bit value read from the instruction stream.  */
+
+static unsigned int
+tic6x_extract_32 (unsigned char *p, struct disassemble_info *info)
+{
+  if (info->endian == BFD_ENDIAN_LITTLE)
+    return (p[0]) | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
+  else
+    return (p[3]) | (p[2] << 8) | (p[1] << 16) | (p[0] << 24);
+}
+
+/* Extract a 16-bit value read from the instruction stream.  */
+
+static unsigned int
+tic6x_extract_16 (unsigned char *p, struct disassemble_info *info)
+{
+  if (info->endian == BFD_ENDIAN_LITTLE)
+    return (p[0]) | (p[1] << 8);
+  else
+    return (p[1]) | (p[0] << 8);
+}
+
+/* FP points to a fetch packet.  Return whether it is header-based; if
+   it is, fill in HEADER.  */
+
+static bfd_boolean
+tic6x_check_fetch_packet_header (unsigned char *fp,
+				 tic6x_fetch_packet_header *header,
+				 struct disassemble_info *info)
+{
+  int i;
+
+  header->header = tic6x_extract_32 (fp + 28, info);
+  if ((header->header & 0xf0000000) != 0xe0000000)
+    return FALSE;
+
+  for (i = 0; i < 7; i++)
+    header->word_compact[i]
+      = (header->header & (1u << (21 + i))) ? TRUE : FALSE;
+
+  header->prot = (header->header & (1u << 20)) ? TRUE : FALSE;
+  header->rs = (header->header & (1u << 19)) ? TRUE : FALSE;
+  header->dsz = (header->header >> 16) & 0x7;
+  header->br = (header->header & (1u << 15)) ? TRUE : FALSE;
+  header->sat = (header->header & (1u << 14)) ? TRUE : FALSE;
+
+  for (i = 0; i < 14; i++)
+    header->p_bits[i]
+      = (header->header & (1u << i)) ? TRUE : FALSE;
+
+  return TRUE;
+}
+
+/* Disassemble the instruction at ADDR and print it using
+   INFO->FPRINTF_FUNC and INFO->STREAM, returning the number of bytes
+   consumed.  */
+
+int
+print_insn_tic6x (bfd_vma addr, struct disassemble_info *info)
+{
+  int status;
+  bfd_vma fp_addr;
+  bfd_vma fp_offset;
+  unsigned char fp[32];
+  unsigned int opcode;
+  tic6x_opcode_id opcode_id;
+  bfd_boolean fetch_packet_header_based;
+  tic6x_fetch_packet_header header;
+  unsigned int num_bits;
+  bfd_boolean bad_offset = FALSE;
+
+  fp_offset = addr & 0x1f;
+  fp_addr = addr - fp_offset;
+  status = info->read_memory_func (fp_addr, fp, 32, info);
+  if (status)
+    {
+      info->memory_error_func (status, addr, info);
+      return -1;
+    }
+
+  fetch_packet_header_based
+    = tic6x_check_fetch_packet_header (fp, &header, info);
+  if (fetch_packet_header_based)
+    {
+      if (fp_offset & 0x1)
+	bad_offset = TRUE;
+      if ((fp_offset & 0x3) && (fp_offset >= 28
+				|| !header.word_compact[fp_offset >> 2]))
+	bad_offset = TRUE;
+      if (fp_offset == 28)
+	{
+	  info->bytes_per_chunk = 4;
+	  info->fprintf_func (info->stream, "<fetch packet header 0x%.8x>",
+			      header.header);
+	  return 4;
+	}
+      num_bits = (header.word_compact[fp_offset >> 2] ? 16 : 32);
+    }
+  else
+    {
+      num_bits = 32;
+      if (fp_offset & 0x3)
+	bad_offset = TRUE;
+    }
+
+  if (bad_offset)
+    {
+      info->bytes_per_chunk = 1;
+      info->fprintf_func (info->stream, ".byte 0x%.2x", fp[fp_offset]);
+      return 1;
+    }
+
+  if (num_bits == 16)
+    {
+      /* The least-significant part of a 32-bit word comes logically
+	 before the most-significant part.  For big-endian, follow the
+	 TI assembler in showing instructions in logical order by
+	 pretending that the two halves of the word are in opposite
+	 locations to where they actually are.  */
+      if (info->endian == BFD_ENDIAN_LITTLE)
+	opcode = tic6x_extract_16 (fp + fp_offset, info);
+      else
+	opcode = tic6x_extract_16 (fp + (fp_offset ^ 2), info);
+    }
+  else
+    opcode = tic6x_extract_32 (fp + fp_offset, info);
+
+  for (opcode_id = 0; opcode_id < tic6x_opcode_max; opcode_id++)
+    {
+      const tic6x_opcode *const opc = &tic6x_opcode_table[opcode_id];
+      const tic6x_insn_format *const fmt
+	= &tic6x_insn_format_table[opc->format];
+      const tic6x_insn_field *creg_field;
+      bfd_boolean p_bit;
+      const char *parallel;
+      const char *cond = "";
+      const char *func_unit;
+      char func_unit_buf[7];
+      unsigned int func_unit_side = 0;
+      unsigned int func_unit_data_side = 0;
+      unsigned int func_unit_cross = 0;
+      /* The maximum length of the text of a non-PC-relative operand
+	 is 24 bytes (SPMASK masking all eight functional units, with
+	 separating commas and trailing NUL).  */
+      char operands[TIC6X_MAX_OPERANDS][24] = { { 0 } };
+      bfd_vma operands_addresses[TIC6X_MAX_OPERANDS] = { 0 };
+      bfd_boolean operands_text[TIC6X_MAX_OPERANDS] = { FALSE };
+      bfd_boolean operands_pcrel[TIC6X_MAX_OPERANDS] = { FALSE };
+      unsigned int fix;
+      unsigned int num_operands;
+      unsigned int op_num;
+      bfd_boolean fixed_ok;
+      bfd_boolean operands_ok;
+
+      if (opc->flags & TIC6X_FLAG_MACRO)
+	continue;
+      if (fmt->num_bits != num_bits)
+	continue;
+      if ((opcode & fmt->mask) != fmt->cst_bits)
+	continue;
+
+      /* If the format has a creg field, it is only a candidate for a
+	 match if the creg and z fields have values indicating a valid
+	 condition; reserved values indicate either an instruction
+	 format without a creg field, or an invalid instruction.  */
+      creg_field = tic6x_field_from_fmt (fmt, tic6x_field_creg);
+      if (creg_field)
+	{
+	  const tic6x_insn_field *z_field;
+	  unsigned int creg_value, z_value;
+	  static const char *const conds[8][2] =
+	    {
+	      { "", NULL },
+	      { "[b0] ", "[!b0] " },
+	      { "[b1] ", "[!b1] " },
+	      { "[b2] ", "[!b2] " },
+	      { "[a1] ", "[!a1] " },
+	      { "[a2] ", "[!a2] " },
+	      { "[a0] ", "[!a0] " },
+	      { NULL, NULL }
+	    };
+
+	  /* A creg field is not meaningful without a z field, so if
+	     the z field is not present this is an error in the format
+	     table.  */
+	  z_field = tic6x_field_from_fmt (fmt, tic6x_field_z);
+	  if (!z_field)
+	    abort ();
+
+	  creg_value = tic6x_field_bits (opcode, creg_field);
+	  z_value = tic6x_field_bits (opcode, z_field);
+	  cond = conds[creg_value][z_value];
+	  if (cond == NULL)
+	    continue;
+	}
+
+      /* All fixed fields must have matching values; all fields with
+	 restricted ranges must have values within those ranges.  */
+      fixed_ok = TRUE;
+      for (fix = 0; fix < opc->num_fixed_fields; fix++)
+	{
+	  unsigned int field_bits;
+	  const tic6x_insn_field *const field
+	    = tic6x_field_from_fmt (fmt, opc->fixed_fields[fix].field_id);
+
+	  if (!field)
+	    abort ();
+	  field_bits = tic6x_field_bits (opcode, field);
+	  if (field_bits < opc->fixed_fields[fix].min_val
+	      || field_bits > opc->fixed_fields[fix].max_val)
+	    {
+	      fixed_ok = FALSE;
+	      break;
+	    }
+	}
+      if (!fixed_ok)
+	continue;
+
+      /* The instruction matches.  */
+
+      /* The p-bit indicates whether this instruction is in parallel
+	 with the *next* instruction, whereas the parallel bars
+	 indicate the instruction is in parallel with the *previous*
+	 instruction.  Thus, we must find the p-bit for the previous
+	 instruction.  */
+      if (num_bits == 16 && (fp_offset & 0x2) == 2)
+	{
+	  /* This is the logically second (most significant; second in
+	     fp_offset terms because fp_offset relates to logical not
+	     physical addresses) instruction of a compact pair; find
+	     the p-bit for the first (least significant).  */
+	  p_bit = header.p_bits[(fp_offset >> 2) << 1];
+	}
+      else if (fp_offset >= 4)
+	{
+	  /* Find the last instruction of the previous word in this
+	     fetch packet.  For compact instructions, this is the most
+	     significant 16 bits.  */
+	  if (fetch_packet_header_based
+	      && header.word_compact[(fp_offset >> 2) - 1])
+	    p_bit = header.p_bits[(fp_offset >> 1) - 1];
+	  else
+	    {
+	      unsigned int prev_opcode
+		= tic6x_extract_32 (fp + (fp_offset & 0x1c) - 4, info);
+	      p_bit = (prev_opcode & 0x1) ? TRUE : FALSE;
+	    }
+	}
+      else
+	{
+	  /* Find the last instruction of the previous fetch
+	     packet.  */
+	  unsigned char fp_prev[32];
+	  status = info->read_memory_func (fp_addr - 32, fp_prev, 32, info);
+	  if (status)
+	    /* No previous instruction to be parallel with.  */
+	    p_bit = FALSE;
+	  else
+	    {
+	      bfd_boolean prev_header_based;
+	      tic6x_fetch_packet_header prev_header;
+
+	      prev_header_based
+		= tic6x_check_fetch_packet_header (fp_prev, &prev_header, info);
+	      if (prev_header_based && prev_header.word_compact[6])
+		p_bit = prev_header.p_bits[13];
+	      else
+		{
+		  unsigned int prev_opcode = tic6x_extract_32 (fp_prev + 28,
+							       info);
+		  p_bit = (prev_opcode & 0x1) ? TRUE : FALSE;
+		}
+	    }
+	}
+      parallel = p_bit ? "|| " : "";
+
+      if (opc->func_unit == tic6x_func_unit_nfu)
+	func_unit = "";
+      else
+	{
+	  unsigned int fld_num;
+	  char func_unit_char;
+	  const char *data_str;
+	  bfd_boolean have_areg = FALSE;
+	  bfd_boolean have_cross = FALSE;
+
+	  func_unit_side = (opc->flags & TIC6X_FLAG_SIDE_B_ONLY) ? 2 : 0;
+	  func_unit_cross = 0;
+	  func_unit_data_side = (opc->flags & TIC6X_FLAG_SIDE_T2_ONLY) ? 2 : 0;
+
+	  for (fld_num = 0; fld_num < opc->num_variable_fields; fld_num++)
+	    {
+	      const tic6x_coding_field *const enc = &opc->variable_fields[fld_num];
+	      const tic6x_insn_field *field;
+	      unsigned int fld_val;
+
+	      field = tic6x_field_from_fmt (fmt, enc->field_id);
+	      if (!field)
+		abort ();
+	      fld_val = tic6x_field_bits (opcode, field);
+	      switch (enc->coding_method)
+		{
+		case tic6x_coding_fu:
+		  /* The side must be specified exactly once.  */
+		  if (func_unit_side)
+		    abort ();
+		  func_unit_side = (fld_val ? 2 : 1);
+		  break;
+
+		case tic6x_coding_data_fu:
+		  /* The data side must be specified exactly once.  */
+		  if (func_unit_data_side)
+		    abort ();
+		  func_unit_data_side = (fld_val ? 2 : 1);
+		  break;
+
+		case tic6x_coding_xpath:
+		  /* Cross path use must be specified exactly
+		     once.  */
+		  if (have_cross)
+		    abort ();
+		  have_cross = TRUE;
+		  func_unit_cross = fld_val;
+		  break;
+
+		case tic6x_coding_areg:
+		  have_areg = TRUE;
+		  break;
+
+		default:
+		  /* Don't relate to functional units.  */
+		  break;
+		}
+	    }
+
+	  /* The side of the functional unit used must now have been
+	     determined either from the flags or from an instruction
+	     field.  */
+	  if (func_unit_side != 1 && func_unit_side != 2)
+	    abort ();
+
+	  /* Cross paths are not applicable when sides are specified
+	     for both address and data paths.  */
+	  if (func_unit_data_side && have_cross)
+	    abort ();
+
+	  /* Separate address and data paths are only applicable for
+	     the D unit.  */
+	  if (func_unit_data_side && opc->func_unit != tic6x_func_unit_d)
+	    abort ();
+
+	  /* If an address register is being used but in ADDA rather
+	     than a load or store, it uses a cross path for side-A
+	     instructions, and the cross path use is not specified by
+	     an instruction field.  */
+	  if (have_areg && !func_unit_data_side)
+	    {
+	      if (have_cross)
+		abort ();
+	      func_unit_cross = (func_unit_side == 1 ? TRUE : FALSE);
+	    }
+
+	  switch (opc->func_unit)
+	    {
+	    case tic6x_func_unit_d:
+	      func_unit_char = 'D';
+	      break;
+
+	    case tic6x_func_unit_l:
+	      func_unit_char = 'L';
+	      break;
+
+	    case tic6x_func_unit_m:
+	      func_unit_char = 'M';
+	      break;
+
+	    case tic6x_func_unit_s:
+	      func_unit_char = 'S';
+	      break;
+
+	    default:
+	      abort ();
+	    }
+
+	  switch (func_unit_data_side)
+	    {
+	    case 0:
+	      data_str = "";
+	      break;
+
+	    case 1:
+	      data_str = "T1";
+	      break;
+
+	    case 2:
+	      data_str = "T2";
+	      break;
+
+	    default:
+	      abort ();
+	    }
+
+	  snprintf (func_unit_buf, 7, " .%c%u%s%s", func_unit_char,
+		    func_unit_side, (func_unit_cross ? "X" : ""), data_str);
+	  func_unit = func_unit_buf;
+	}
+
+      /* For each operand there must be one or more fields set based
+	 on that operand, that can together be used to derive the
+	 operand value.  */
+      operands_ok = TRUE;
+      num_operands = opc->num_operands;
+      for (op_num = 0; op_num < num_operands; op_num++)
+	{
+	  unsigned int fld_num;
+	  unsigned int mem_base_reg = 0;
+	  bfd_boolean mem_base_reg_known = FALSE;
+	  bfd_boolean mem_base_reg_known_long = FALSE;
+	  unsigned int mem_offset = 0;
+	  bfd_boolean mem_offset_known = FALSE;
+	  bfd_boolean mem_offset_known_long = FALSE;
+	  unsigned int mem_mode = 0;
+	  bfd_boolean mem_mode_known = FALSE;
+	  unsigned int mem_scaled = 0;
+	  bfd_boolean mem_scaled_known = FALSE;
+	  unsigned int crlo = 0;
+	  bfd_boolean crlo_known = FALSE;
+	  unsigned int crhi = 0;
+	  bfd_boolean crhi_known = FALSE;
+	  bfd_boolean spmask_skip_operand = FALSE;
+	  unsigned int fcyc_bits = 0;
+	  bfd_boolean prev_sploop_found = FALSE;
+
+	  switch (opc->operand_info[op_num].form)
+	    {
+	    case tic6x_operand_retreg:
+	      /* Fully determined by the functional unit.  */
+	      operands_text[op_num] = TRUE;
+	      snprintf (operands[op_num], 24, "%c3",
+			(func_unit_side == 2 ? 'b' : 'a'));
+	      continue;
+
+	    case tic6x_operand_irp:
+	      operands_text[op_num] = TRUE;
+	      snprintf (operands[op_num], 24, "irp");
+	      continue;
+
+	    case tic6x_operand_nrp:
+	      operands_text[op_num] = TRUE;
+	      snprintf (operands[op_num], 24, "nrp");
+	      continue;
+
+	    default:
+	      break;
+	    }
+
+	  for (fld_num = 0; fld_num < opc->num_variable_fields; fld_num++)
+	    {
+	      const tic6x_coding_field *const enc
+		= &opc->variable_fields[fld_num];
+	      const tic6x_insn_field *field;
+	      unsigned int fld_val;
+	      signed int signed_fld_val;
+
+	      if (enc->operand_num != op_num)
+		continue;
+	      field = tic6x_field_from_fmt (fmt, enc->field_id);
+	      if (!field)
+		abort ();
+	      fld_val = tic6x_field_bits (opcode, field);
+	      switch (enc->coding_method)
+		{
+		case tic6x_coding_ucst:
+		case tic6x_coding_ulcst_dpr_byte:
+		case tic6x_coding_ulcst_dpr_half:
+		case tic6x_coding_ulcst_dpr_word:
+		case tic6x_coding_lcst_low16:
+		  switch (opc->operand_info[op_num].form)
+		    {
+		    case tic6x_operand_asm_const:
+		    case tic6x_operand_link_const:
+		      operands_text[op_num] = TRUE;
+		      snprintf (operands[op_num], 24, "%u", fld_val);
+		      break;
+
+		    case tic6x_operand_mem_long:
+		      mem_offset = fld_val;
+		      mem_offset_known_long = TRUE;
+		      break;
+
+		    default:
+		      abort ();
+		    }
+		  break;
+
+		case tic6x_coding_lcst_high16:
+		  operands_text[op_num] = TRUE;
+		  snprintf (operands[op_num], 24, "%u", fld_val << 16);
+		  break;
+
+		case tic6x_coding_scst:
+		  operands_text[op_num] = TRUE;
+		  signed_fld_val = (signed int) fld_val;
+		  signed_fld_val ^= (1 << (field->width - 1));
+		  signed_fld_val -= (1 << (field->width - 1));
+		  snprintf (operands[op_num], 24, "%d", signed_fld_val);
+		  break;
+
+		case tic6x_coding_ucst_minus_one:
+		  operands_text[op_num] = TRUE;
+		  snprintf (operands[op_num], 24, "%u", fld_val + 1);
+		  break;
+
+		case tic6x_coding_pcrel:
+		case tic6x_coding_pcrel_half:
+		  signed_fld_val = (signed int) fld_val;
+		  signed_fld_val ^= (1 << (field->width - 1));
+		  signed_fld_val -= (1 << (field->width - 1));
+		  if (fetch_packet_header_based
+		      && enc->coding_method == tic6x_coding_pcrel_half)
+		    signed_fld_val *= 2;
+		  else
+		    signed_fld_val *= 4;
+		  operands_pcrel[op_num] = TRUE;
+		  operands_addresses[op_num] = fp_addr + signed_fld_val;
+		  break;
+
+		case tic6x_coding_reg_shift:
+		  fld_val <<= 1;
+		  /* Fall through.  */
+		case tic6x_coding_reg:
+		  switch (opc->operand_info[op_num].form)
+		    {
+		    case tic6x_operand_reg:
+		      operands_text[op_num] = TRUE;
+		      snprintf (operands[op_num], 24, "%c%u",
+				(func_unit_side == 2 ? 'b' : 'a'), fld_val);
+		      break;
+
+		    case tic6x_operand_xreg:
+		      operands_text[op_num] = TRUE;
+		      snprintf (operands[op_num], 24, "%c%u",
+				(((func_unit_side == 2) ^ func_unit_cross)
+				 ? 'b'
+				 : 'a'), fld_val);
+		      break;
+
+		    case tic6x_operand_dreg:
+		      operands_text[op_num] = TRUE;
+		      snprintf (operands[op_num], 24, "%c%u",
+				(func_unit_data_side == 2 ? 'b' : 'a'),
+				fld_val);
+		      break;
+
+		    case tic6x_operand_regpair:
+		      operands_text[op_num] = TRUE;
+		      if (fld_val & 1)
+			operands_ok = FALSE;
+		      snprintf (operands[op_num], 24, "%c%u:%c%u",
+				(func_unit_side == 2 ? 'b' : 'a'), fld_val + 1,
+				(func_unit_side == 2 ? 'b' : 'a'), fld_val);
+		      break;
+
+		    case tic6x_operand_xregpair:
+		      operands_text[op_num] = TRUE;
+		      if (fld_val & 1)
+			operands_ok = FALSE;
+		      snprintf (operands[op_num], 24, "%c%u:%c%u",
+				(((func_unit_side == 2) ^ func_unit_cross)
+				 ? 'b'
+				 : 'a'), fld_val + 1,
+				(((func_unit_side == 2) ^ func_unit_cross)
+				 ? 'b'
+				 : 'a'), fld_val);
+		      break;
+
+		    case tic6x_operand_dregpair:
+		      operands_text[op_num] = TRUE;
+		      if (fld_val & 1)
+			operands_ok = FALSE;
+		      snprintf (operands[op_num], 24, "%c%u:%c%u",
+				(func_unit_data_side == 2 ? 'b' : 'a'),
+				fld_val + 1,
+				(func_unit_data_side == 2 ? 'b' : 'a'),
+				fld_val);
+		      break;
+
+		    case tic6x_operand_mem_deref:
+		      operands_text[op_num] = TRUE;
+		      snprintf (operands[op_num], 24, "*%c%u",
+				(func_unit_side == 2 ? 'b' : 'a'), fld_val);
+		      break;
+
+		    case tic6x_operand_mem_short:
+		    case tic6x_operand_mem_ndw:
+		      mem_base_reg = fld_val;
+		      mem_base_reg_known = TRUE;
+		      break;
+
+		    default:
+		      abort ();
+		    }
+		  break;
+
+		case tic6x_coding_areg:
+		  switch (opc->operand_info[op_num].form)
+		    {
+		    case tic6x_operand_areg:
+		      operands_text[op_num] = TRUE;
+		      snprintf (operands[op_num], 24, "b%u",
+				fld_val ? 15u : 14u);
+		      break;
+
+		    case tic6x_operand_mem_long:
+		      mem_base_reg = fld_val ? 15u : 14u;
+		      mem_base_reg_known_long = TRUE;
+		      break;
+
+		    default:
+		      abort ();
+		    }
+		  break;
+
+		case tic6x_coding_mem_offset:
+		case tic6x_coding_mem_offset_noscale:
+		  mem_offset = fld_val;
+		  mem_offset_known = TRUE;
+		  break;
+
+		case tic6x_coding_mem_mode:
+		  mem_mode = fld_val;
+		  mem_mode_known = TRUE;
+		  break;
+
+		case tic6x_coding_scaled:
+		  mem_scaled = fld_val;
+		  mem_scaled_known = TRUE;
+		  break;
+
+		case tic6x_coding_crlo:
+		  crlo = fld_val;
+		  crlo_known = TRUE;
+		  break;
+
+		case tic6x_coding_crhi:
+		  crhi = fld_val;
+		  crhi_known = TRUE;
+		  break;
+
+		case tic6x_coding_fstg:
+		case tic6x_coding_fcyc:
+		  if (!prev_sploop_found)
+		    {
+		      bfd_vma search_fp_addr = fp_addr;
+		      bfd_vma search_fp_offset = fp_offset;
+		      bfd_boolean search_fp_header_based
+			= fetch_packet_header_based;
+		      tic6x_fetch_packet_header search_fp_header = header;
+		      unsigned char search_fp[32];
+		      unsigned int search_num_bits;
+		      unsigned int search_opcode;
+		      unsigned int sploop_ii = 0;
+		      int i;
+
+		      memcpy (search_fp, fp, 32);
+
+		      /* To interpret these bits in an SPKERNEL
+			 instruction, we must find the previous
+			 SPLOOP-family instruction.  It may come up to
+			 48 execute packets earlier.  */
+		      for (i = 0; i < 48 * 8; i++)
+			{
+			  /* Find the previous instruction.  */
+			  if (search_fp_offset & 2)
+			    search_fp_offset -= 2;
+			  else if (search_fp_offset >= 4)
+			    {
+			      if (search_fp_header_based
+				  && (search_fp_header.word_compact
+				      [(search_fp_offset >> 2) - 1]))
+				search_fp_offset -= 2;
+			      else
+				search_fp_offset -= 4;
+			    }
+			  else
+			    {
+			      search_fp_addr -= 32;
+			      status = info->read_memory_func (search_fp_addr,
+							       search_fp,
+							       32, info);
+			      if (status)
+				/* No previous SPLOOP instruction.  */
+				break;
+			      search_fp_header_based
+				= (tic6x_check_fetch_packet_header
+				   (search_fp, &search_fp_header, info));
+			      if (search_fp_header_based)
+				search_fp_offset
+				  = search_fp_header.word_compact[6] ? 26 : 24;
+			      else
+				search_fp_offset = 28;
+			    }
+
+			  /* Extract the previous instruction.  */
+			  if (search_fp_header_based)
+			    search_num_bits
+			      = (search_fp_header.word_compact[search_fp_offset
+							       >> 2]
+				 ? 16
+				 : 32);
+			  else
+			    search_num_bits = 32;
+			  if (search_num_bits == 16)
+			    {
+			      if (info->endian == BFD_ENDIAN_LITTLE)
+				search_opcode
+				  = (tic6x_extract_16
+				     (search_fp + search_fp_offset, info));
+			      else
+				search_opcode
+				  = (tic6x_extract_16
+				     (search_fp + (search_fp_offset ^ 2),
+				      info));
+			    }
+			  else
+			    search_opcode
+			      = tic6x_extract_32 (search_fp + search_fp_offset,
+						  info);
+
+			  /* Check whether it is an SPLOOP-family
+			     instruction.  */
+			  if (search_num_bits == 32
+			      && ((search_opcode & 0x003ffffe) == 0x00038000
+				  || (search_opcode & 0x003ffffe) == 0x0003a000
+				  || ((search_opcode & 0x003ffffe)
+				      == 0x0003e000)))
+			    {
+			      prev_sploop_found = TRUE;
+			      sploop_ii = ((search_opcode >> 23) & 0x1f) + 1;
+			    }
+			  else if (search_num_bits == 16
+				   && (search_opcode & 0x3c7e) == 0x0c66)
+			    {
+			      prev_sploop_found = TRUE;
+			      sploop_ii
+				= (((search_opcode >> 7) & 0x7)
+				   | ((search_opcode >> 11) & 0x8)) + 1;
+			    }
+			  if (prev_sploop_found)
+			    {
+			      if (sploop_ii <= 0)
+				abort ();
+			      else if (sploop_ii <= 1)
+				fcyc_bits = 0;
+			      else if (sploop_ii <= 2)
+				fcyc_bits = 1;
+			      else if (sploop_ii <= 4)
+				fcyc_bits = 2;
+			      else if (sploop_ii <= 8)
+				fcyc_bits = 3;
+			      else if (sploop_ii <= 14)
+				fcyc_bits = 4;
+			      else
+				prev_sploop_found = FALSE;
+			    }
+			  if (prev_sploop_found)
+			    break;
+			}
+		    }
+		  if (!prev_sploop_found)
+		    {
+		      operands_ok = FALSE;
+		      operands_text[op_num] = TRUE;
+		      break;
+		    }
+		  if (fcyc_bits > field->width)
+		    abort ();
+		  if (enc->coding_method == tic6x_coding_fstg)
+		    {
+		      operands_text[op_num] = TRUE;
+		      snprintf (operands[op_num], 24, "%u",
+				fld_val >> fcyc_bits);
+		    }
+		  else
+		    {
+		      operands_text[op_num] = TRUE;
+		      snprintf (operands[op_num], 24, "%u",
+				fld_val & ((1 << fcyc_bits) - 1));
+		    }
+		  break;
+
+		case tic6x_coding_spmask:
+		  if (fld_val == 0)
+		    spmask_skip_operand = TRUE;
+		  else
+		    {
+		      char *p;
+		      unsigned int i;
+
+		      operands_text[op_num] = TRUE;
+		      p = operands[op_num];
+		      for (i = 0; i < 8; i++)
+			if (fld_val & (1 << i))
+			  {
+			    *p++ = "LSDM"[i/2];
+			    *p++ = '1' + (i & 1);
+			    *p++ = ',';
+			  }
+		      p[-1] = 0;
+		    }
+		  break;
+
+		case tic6x_coding_fu:
+		case tic6x_coding_data_fu:
+		case tic6x_coding_xpath:
+		  /* Don't relate to operands, so operand number is
+		     meaningless.  */
+		  break;
+
+		default:
+		  abort ();
+		}
+
+	      if (mem_base_reg_known_long && mem_offset_known_long)
+		{
+		  if (operands_text[op_num] || operands_pcrel[op_num])
+		    abort ();
+		  operands_text[op_num] = TRUE;
+		  snprintf (operands[op_num], 24, "*+b%u(%u)", mem_base_reg,
+			    mem_offset * opc->operand_info[op_num].size);
+		}
+
+	      if (mem_base_reg_known && mem_offset_known && mem_mode_known
+		  && (mem_scaled_known
+		      || (opc->operand_info[op_num].form
+			  != tic6x_operand_mem_ndw)))
+		{
+		  char side;
+		  char base[4];
+		  bfd_boolean offset_is_reg;
+		  bfd_boolean offset_scaled;
+		  char offset[4];
+		  char offsetp[6];
+
+		  if (operands_text[op_num] || operands_pcrel[op_num])
+		    abort ();
+
+		  side = func_unit_side == 2 ? 'b' : 'a';
+		  snprintf (base, 4, "%c%u", side, mem_base_reg);
+
+		  offset_is_reg = ((mem_mode & 4) ? TRUE : FALSE);
+		  if (offset_is_reg)
+		    {
+		      snprintf (offset, 4, "%c%u", side, mem_offset);
+		      if (opc->operand_info[op_num].form
+			  == tic6x_operand_mem_ndw)
+			offset_scaled = mem_scaled ? TRUE : FALSE;
+		      else
+			offset_scaled = TRUE;
+		    }
+		  else
+		    {
+		      if (opc->operand_info[op_num].form
+			  == tic6x_operand_mem_ndw)
+			{
+			  offset_scaled = mem_scaled ? TRUE : FALSE;
+			  snprintf (offset, 4, "%u", mem_offset);
+			}
+		      else
+			{
+			  offset_scaled = FALSE;
+			  snprintf (offset, 4, "%u",
+				    (mem_offset
+				     * opc->operand_info[op_num].size));
+			}
+		    }
+
+		  if (offset_scaled)
+		    snprintf (offsetp, 6, "[%s]", offset);
+		  else
+		    snprintf (offsetp, 6, "(%s)", offset);
+
+		  operands_text[op_num] = TRUE;
+		  switch (mem_mode & ~4u)
+		    {
+		    case 0:
+		      snprintf (operands[op_num], 24, "*-%s%s", base, offsetp);
+		      break;
+
+		    case 1:
+		      snprintf (operands[op_num], 24, "*+%s%s", base, offsetp);
+		      break;
+
+		    case 2:
+		    case 3:
+		      operands_ok = FALSE;
+		      break;
+
+		    case 8:
+		      snprintf (operands[op_num], 24, "*--%s%s", base,
+				offsetp);
+		      break;
+
+		    case 9:
+		      snprintf (operands[op_num], 24, "*++%s%s", base,
+				offsetp);
+		      break;
+
+		    case 10:
+		      snprintf (operands[op_num], 24, "*%s--%s", base,
+				offsetp);
+		      break;
+
+		    case 11:
+		      snprintf (operands[op_num], 24, "*%s++%s", base,
+				offsetp);
+		      break;
+
+		    default:
+		      abort ();
+		    }
+		}
+
+	      if (crlo_known && crhi_known)
+		{
+		  tic6x_rw rw;
+		  tic6x_ctrl_id crid;
+
+		  if (operands_text[op_num] || operands_pcrel[op_num])
+		    abort ();
+
+		  rw = opc->operand_info[op_num].rw;
+		  if (rw != tic6x_rw_read
+		      && rw != tic6x_rw_write)
+		    abort ();
+
+		  for (crid = 0; crid < tic6x_ctrl_max; crid++)
+		    {
+		      if (crlo == tic6x_ctrl_table[crid].crlo
+			  && (crhi & tic6x_ctrl_table[crid].crhi_mask) == 0
+			  && (rw == tic6x_rw_read
+			      ? (tic6x_ctrl_table[crid].rw == tic6x_rw_read
+				 || (tic6x_ctrl_table[crid].rw
+				     == tic6x_rw_read_write))
+			      : (tic6x_ctrl_table[crid].rw == tic6x_rw_write
+				 || (tic6x_ctrl_table[crid].rw
+				     == tic6x_rw_read_write))))
+			break;
+		    }
+		  if (crid == tic6x_ctrl_max)
+		    {
+		      operands_text[op_num] = TRUE;
+		      operands_ok = FALSE;
+		    }
+		  else
+		    {
+		      operands_text[op_num] = TRUE;
+		      snprintf (operands[op_num], 24, "%s",
+				tic6x_ctrl_table[crid].name);
+		    }
+		}
+
+	      if (operands_text[op_num] || operands_pcrel[op_num]
+		  || spmask_skip_operand)
+		break;
+	    }
+	  if (spmask_skip_operand)
+	    {
+	      /* SPMASK operands are only valid as the single operand
+		 in the opcode table.  */
+	      if (num_operands != 1)
+		abort ();
+	      num_operands = 0;
+	      break;
+	    }
+	  /* The operand must by now have been decoded.  */
+	  if (!operands_text[op_num] && !operands_pcrel[op_num])
+	    abort ();
+	}
+
+      if (!operands_ok)
+	continue;
+
+      info->bytes_per_chunk = num_bits / 8;
+      info->fprintf_func (info->stream, "%s%s%s%s", parallel, cond,
+			  opc->name, func_unit);
+      for (op_num = 0; op_num < num_operands; op_num++)
+	{
+	  info->fprintf_func (info->stream, "%c", (op_num == 0 ? ' ' : ','));
+	  if (operands_pcrel[op_num])
+	    info->print_address_func (operands_addresses[op_num], info);
+	  else
+	    info->fprintf_func (info->stream, "%s", operands[op_num]);
+	}
+      if (fetch_packet_header_based && header.prot)
+	info->fprintf_func (info->stream, " || nop 5");
+
+      return num_bits / 8;
+    }
+
+  info->bytes_per_chunk = num_bits / 8;
+  info->fprintf_func (info->stream, "<undefined instruction 0x%.*x>",
+		      (int) num_bits / 4, opcode);
+  return num_bits / 8;
+}