arch/tile: factor out <arch/opcode.h> header

The kernel code was using some <asm> headers that included a mix
of hardware-specific information (typically found in Tilera <arch>
headers) and structures, enums, and function declarations supporting
the disassembly function of the tile-desc.c sources.

This change refactors that code so that a hardware-specific, but
OS- and application-agnostic header, is created: <arch/opcode.h>.
This header is then exported to userspace along with the other
<arch> headers and can be used to build userspace code; in particular,
it is used by glibc as part of implementing the backtrace() function.

The new header, together with a header that specifically describes
the disassembly code (<asm/tile-desc.h> with _32 and _64 variants),
replaces the old <asm/opcode-tile*.h> and <asm/opcode_constants*.h>
headers.

As part of this change, we are also renaming the 32-bit constants
from TILE_xxx to TILEPRO_xxx to better reflect the fact that they
are specific to the TILEPro architecture, and not to TILE-Gx
and any successor "tile" architecture chips.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

15 files changed, 4536 insertions, 4359 deletions

diff --git a/arch/tile/include/asm/opcode_constants.h b/arch/tile/include/arch/opcode.h
index 37a9f2958cb1..92d15229ecec 100644
--- a/arch/tile/include/asm/opcode_constants.h
+++ b/arch/tile/include/arch/opcode.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ * Copyright 2011 Tilera Corporation. All Rights Reserved.
  *
  *   This program is free software; you can redistribute it and/or
  *   modify it under the terms of the GNU General Public License
@@ -12,15 +12,10 @@
  *   more details.
  */
 
-#ifndef _ASM_TILE_OPCODE_CONSTANTS_H
-#define _ASM_TILE_OPCODE_CONSTANTS_H
-
-#include <arch/chip.h>
-
-#if CHIP_WORD_SIZE() == 64
-#include <asm/opcode_constants_64.h>
+#if defined(__tilepro__)
+#include <arch/opcode_tilepro.h>
+#elif defined(__tilegx__)
+#include <arch/opcode_tilegx.h>
 #else
-#include <asm/opcode_constants_32.h>
+#error Unexpected Tilera chip type
 #endif
-
-#endif /* _ASM_TILE_OPCODE_CONSTANTS_H */
diff --git a/arch/tile/include/asm/opcode_constants_64.h b/arch/tile/include/arch/opcode_tilegx.h
index 710192869476..c14d02c81600 100644
--- a/arch/tile/include/asm/opcode_constants_64.h
+++ b/arch/tile/include/arch/opcode_tilegx.h
@@ -1,4 +1,5 @@
-/*
+/* TILE-Gx opcode information.
+ *
  * Copyright 2011 Tilera Corporation. All Rights Reserved.
  *
  *   This program is free software; you can redistribute it and/or
@@ -10,13 +11,805 @@
  *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  *   NON INFRINGEMENT.  See the GNU General Public License for
  *   more details.
+ *
+ *
+ *
+ *
+ *
  */
 
-/* This file is machine-generated; DO NOT EDIT! */
+#ifndef __ARCH_OPCODE_H__
+#define __ARCH_OPCODE_H__
+
+#ifndef __ASSEMBLER__
+
+typedef unsigned long long tilegx_bundle_bits;
+
+/* These are the bits that determine if a bundle is in the X encoding. */
+#define TILEGX_BUNDLE_MODE_MASK ((tilegx_bundle_bits)3 << 62)
+
+enum
+{
+  /* Maximum number of instructions in a bundle (2 for X, 3 for Y). */
+  TILEGX_MAX_INSTRUCTIONS_PER_BUNDLE = 3,
+
+  /* How many different pipeline encodings are there? X0, X1, Y0, Y1, Y2. */
+  TILEGX_NUM_PIPELINE_ENCODINGS = 5,
+
+  /* Log base 2 of TILEGX_BUNDLE_SIZE_IN_BYTES. */
+  TILEGX_LOG2_BUNDLE_SIZE_IN_BYTES = 3,
+
+  /* Instructions take this many bytes. */
+  TILEGX_BUNDLE_SIZE_IN_BYTES = 1 << TILEGX_LOG2_BUNDLE_SIZE_IN_BYTES,
+
+  /* Log base 2 of TILEGX_BUNDLE_ALIGNMENT_IN_BYTES. */
+  TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES = 3,
+
+  /* Bundles should be aligned modulo this number of bytes. */
+  TILEGX_BUNDLE_ALIGNMENT_IN_BYTES =
+    (1 << TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES),
+
+  /* Number of registers (some are magic, such as network I/O). */
+  TILEGX_NUM_REGISTERS = 64,
+};
+
+/* Make a few "tile_" variables to simplify common code between
+   architectures.  */
+
+typedef tilegx_bundle_bits tile_bundle_bits;
+#define TILE_BUNDLE_SIZE_IN_BYTES TILEGX_BUNDLE_SIZE_IN_BYTES
+#define TILE_BUNDLE_ALIGNMENT_IN_BYTES TILEGX_BUNDLE_ALIGNMENT_IN_BYTES
+#define TILE_LOG2_BUNDLE_ALIGNMENT_IN_BYTES \
+  TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES
+
+/* 64-bit pattern for a { bpt ; nop } bundle. */
+#define TILEGX_BPT_BUNDLE 0x286a44ae51485000ULL
+
+static __inline unsigned int
+get_BFEnd_X0(tilegx_bundle_bits num)
+{
+  const unsigned int n = (unsigned int)num;
+  return (((n >> 12)) & 0x3f);
+}
+
+static __inline unsigned int
+get_BFOpcodeExtension_X0(tilegx_bundle_bits num)
+{
+  const unsigned int n = (unsigned int)num;
+  return (((n >> 24)) & 0xf);
+}
+
+static __inline unsigned int
+get_BFStart_X0(tilegx_bundle_bits num)
+{
+  const unsigned int n = (unsigned int)num;
+  return (((n >> 18)) & 0x3f);
+}
+
+static __inline unsigned int
+get_BrOff_X1(tilegx_bundle_bits n)
+{
+  return (((unsigned int)(n >> 31)) & 0x0000003f) |
+         (((unsigned int)(n >> 37)) & 0x0001ffc0);
+}
+
+static __inline unsigned int
+get_BrType_X1(tilegx_bundle_bits n)
+{
+  return (((unsigned int)(n >> 54)) & 0x1f);
+}
+
+static __inline unsigned int
+get_Dest_Imm8_X1(tilegx_bundle_bits n)
+{
+  return (((unsigned int)(n >> 31)) & 0x0000003f) |
+         (((unsigned int)(n >> 43)) & 0x000000c0);
+}
+
+static __inline unsigned int
+get_Dest_X0(tilegx_bundle_bits num)
+{
+  const unsigned int n = (unsigned int)num;
+  return (((n >> 0)) & 0x3f);
+}
+
+static __inline unsigned int
+get_Dest_X1(tilegx_bundle_bits n)
+{
+  return (((unsigned int)(n >> 31)) & 0x3f);
+}
+
+static __inline unsigned int
+get_Dest_Y0(tilegx_bundle_bits num)
+{
+  const unsigned int n = (unsigned int)num;
+  return (((n >> 0)) & 0x3f);
+}
+
+static __inline unsigned int
+get_Dest_Y1(tilegx_bundle_bits n)
+{
+  return (((unsigned int)(n >> 31)) & 0x3f);
+}
+
+static __inline unsigned int
+get_Imm16_X0(tilegx_bundle_bits num)
+{
+  const unsigned int n = (unsigned int)num;
+  return (((n >> 12)) & 0xffff);
+}
+
+static __inline unsigned int
+get_Imm16_X1(tilegx_bundle_bits n)