New Cell SPU port.

1 files changed, 260 insertions, 0 deletions

diff --git a/opcodes/spu-dis.c b/opcodes/spu-dis.c
new file mode 100644
index 0000000000..a0dd1a0742
--- /dev/null
+++ b/opcodes/spu-dis.c
@@ -0,0 +1,260 @@
+/* Disassemble SPU instructions
+
+   Copyright 2006 Free Software Foundation, Inc.
+
+   This file is part of GDB, GAS, and the GNU binutils.
+
+   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.,
+   51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#include <stdio.h>
+#include "sysdep.h"
+#include "dis-asm.h"
+#include "opcode/spu.h"
+
+/* This file provides a disassembler function which uses
+   the disassembler interface defined in dis-asm.h.   */
+
+extern const struct spu_opcode spu_opcodes[];
+extern const int spu_num_opcodes;
+
+static const struct spu_opcode *spu_disassemble_table[(1<<11)];
+
+static void
+init_spu_disassemble (void)
+{
+  int i;
+
+  /* If two instructions have the same opcode then we prefer the first
+   * one.  In most cases it is just an alternate mnemonic. */
+  for (i = 0; i < spu_num_opcodes; i++)
+    {
+      int o = spu_opcodes[i].opcode;
+      if (o >= (1 << 11))
+	abort ();
+      if (spu_disassemble_table[o] == 0)
+	spu_disassemble_table[o] = &spu_opcodes[i];
+    }
+}
+
+/* Determine the instruction from the 10 least significant bits. */
+static const struct spu_opcode *
+get_index_for_opcode (unsigned int insn)
+{
+  const struct spu_opcode *index;
+  unsigned int opcode = insn >> (32-11);
+
+  /* Init the table.  This assumes that element 0/opcode 0 (currently
+   * NOP) is always used */
+  if (spu_disassemble_table[0] == 0)
+    init_spu_disassemble ();
+
+  if ((index = spu_disassemble_table[opcode & 0x780]) != 0
+      && index->insn_type == RRR)
+    return index;
+
+  if ((index = spu_disassemble_table[opcode & 0x7f0]) != 0
+      && (index->insn_type == RI18 || index->insn_type == LBT))
+    return index;
+
+  if ((index = spu_disassemble_table[opcode & 0x7f8]) != 0
+      && index->insn_type == RI10)
+    return index;
+
+  if ((index = spu_disassemble_table[opcode & 0x7fc]) != 0
+      && (index->insn_type == RI16))
+    return index;
+
+  if ((index = spu_disassemble_table[opcode & 0x7fe]) != 0
+      && (index->insn_type == RI8))
+    return index;
+
+  if ((index = spu_disassemble_table[opcode & 0x7ff]) != 0)
+    return index;
+
+  return 0;
+}
+
+/* Print a Spu instruction.  */
+
+int
+print_insn_spu (bfd_vma memaddr, struct disassemble_info *info)
+{
+  bfd_byte buffer[4];
+  int value;
+  int hex_value;
+  int status;
+  unsigned int insn;
+  const struct spu_opcode *index;
+  enum spu_insns tag;
+
+  status = (*info->read_memory_func) (memaddr, buffer, 4, info);
+  if (status != 0)
+    {
+      (*info->memory_error_func) (status, memaddr, info);
+      return -1;
+    }
+
+  insn = bfd_getb32 (buffer);
+
+  index = get_index_for_opcode (insn);
+
+  if (index == 0)
+    {
+      (*info->fprintf_func) (info->stream, ".long 0x%x", insn);
+    }
+  else
+    {
+      int i;
+      int paren = 0;
+      tag = (enum spu_insns)(index - spu_opcodes);
+      (*info->fprintf_func) (info->stream, "%s", index->mnemonic);
+      if (tag == M_BI || tag == M_BISL || tag == M_IRET || tag == M_BISLED
+	  || tag == M_BIHNZ || tag == M_BIHZ || tag == M_BINZ || tag == M_BIZ
+          || tag == M_SYNC || tag == M_HBR)
+	{
+	  int fb = (insn >> (32-18)) & 0x7f;
+	  if (fb & 0x40)
+	    (*info->fprintf_func) (info->stream, tag == M_SYNC ? "c" : "p");
+	  if (fb & 0x20)
+	    (*info->fprintf_func) (info->stream, "d");
+	  if (fb & 0x10)
+	    (*info->fprintf_func) (info->stream, "e");
+	}
+      if (index->arg[0] != 0)
+	(*info->fprintf_func) (info->stream, "\t");
+      hex_value = 0;
+      for (i = 1;  i <= index->arg[0]; i++)
+	{
+	  int arg = index->arg[i];
+	  if (arg != A_P && !paren && i > 1)
+	    (*info->fprintf_func) (info->stream, ",");
+
+	  switch (arg)
+	    {
+	    case A_T:
+	      (*info->fprintf_func) (info->stream, "$%d",
+				     DECODE_INSN_RT (insn));
+	      break;
+	    case A_A:
+	      (*info->fprintf_func) (info->stream, "$%d",
+				     DECODE_INSN_RA (insn));
+	      break;
+	    case A_B:
+	      (*info->fprintf_func) (info->stream, "$%d",
+				     DECODE_INSN_RB (insn));
+	      break;
+	    case A_C:
+	      (*info->fprintf_func) (info->stream, "$%d",
+				     DECODE_INSN_RC (insn));
+	      break;
+	    case A_S:
+	      (*info->fprintf_func) (info->stream, "$sp%d",
+				     DECODE_INSN_RA (insn));
+	      break;
+	    case A_H:
+	      (*info->fprintf_func) (info->stream, "$ch%d",
+				     DECODE_INSN_RA (insn));
+	      break;
+	    case A_P:
+	      paren++;
+	      (*info->fprintf_func) (info->stream, "(");
+	      break;
+	    case A_U7A:
+	      (*info->fprintf_func) (info->stream, "%d",
+				     173 - DECODE_INSN_U8 (insn));
+	      break;
+	    case A_U7B:
+	      (*info->fprintf_func) (info->stream, "%d",
+				     155 - DECODE_INSN_U8 (insn));
+	      break;
+	    case A_S3:
+	    case A_S6:
+	    case A_S7:
+	    case A_S7N:
+	    case A_U3:
+	    case A_U5:
+	    case A_U6:
+	    case A_U7:
+	      hex_value = DECODE_INSN_I7 (insn);
+	      (*info->fprintf_func) (info->stream, "%d", hex_value);
+	      break;
+	    case A_S11:
+	      (*info->print_address_func) (memaddr + DECODE_INSN_I9a (insn) * 4,
+					   info);
+	      break;
+	    case A_S11I:
+	      (*info->print_address_func) (memaddr + DECODE_INSN_I9b (insn) * 4,
+					   info);
+	      break;
+	    case A_S10:
+	    case A_S10B:
+	      hex_value = DECODE_INSN_I10 (insn);
+	      (*info->fprintf_func) (info->stream, "%d", hex_value);
+	      break;
+	    case A_S14:
+	      hex_value = DECODE_INSN_I10 (insn) * 16;
+	      (*info->fprintf_func) (info->stream, "%d", hex_value);
+	      break;
+	    case A_S16:
+	      hex_value = DECODE_INSN_I16 (insn);
+	      (*info->fprintf_func) (info->stream, "%d", hex_value);
+	      break;
+	    case A_X16:
+	      hex_value = DECODE_INSN_U16 (insn);
+	      (*info->fprintf_func) (info->stream, "%u", hex_value);
+	      break;
+	    case A_R18:
+	      value = DECODE_INSN_I16 (insn) * 4;
+	      if (value == 0)
+		(*info->fprintf_func) (info->stream, "%d", value);
+	      else
+		{
+		  hex_value = memaddr + value;
+		  (*info->print_address_func) (hex_value & 0x3ffff, info);
+		}
+	      break;
+	    case A_S18:
+	      value = DECODE_INSN_U16 (insn) * 4;
+	      if (value == 0)
+		(*info->fprintf_func) (info->stream, "%d", value);
+	      else
+		(*info->print_address_func) (value, info);
+	      break;
+	    case A_U18:
+	      value = DECODE_INSN_U18 (insn);
+	      if (value == 0 || !(*info->symbol_at_address_func)(0, info))
+		{
+		  hex_value = value;
+		  (*info->fprintf_func) (info->stream, "%u", value);
+		}
+	      else
+		(*info->print_address_func) (value, info);
+	      break;
+	    case A_U14:
+	      hex_value = DECODE_INSN_U14 (insn);
+	      (*info->fprintf_func) (info->stream, "%u", hex_value);
+	      break;
+	    }
+	  if (arg != A_P && paren)
+	    {
+	      (*info->fprintf_func) (info->stream, ")");
+	      paren--;
+	    }
+	}
+      if (hex_value > 16)
+	(*info->fprintf_func) (info->stream, "\t# %x", hex_value);
+    }
+  return 4;
+}