release/src-rt-6.x/linux/linux-2.6/arch/powerpc/xmon/spu.h

   1 /* SPU ELF support for BFD.
   2
   3    Copyright 2006 Free Software Foundation, Inc.
   4
   5    This file is part of GDB, GAS, and the GNU binutils.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software Foundation,
  19    Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  20
  21
  22 /* These two enums are from rel_apu/common/spu_asm_format.h */
  23 /* definition of instruction format */
  24 typedef enum {
  25   RRR,
  26   RI18,
  27   RI16,
  28   RI10,
  29   RI8,
  30   RI7,
  31   RR,
  32   LBT,
  33   LBTI,
  34   IDATA,
  35   UNKNOWN_IFORMAT
  36 } spu_iformat;
  37
  38 /* These values describe assembly instruction arguments.  They indicate
  39  * how to encode, range checking and which relocation to use. */
  40 typedef enum {
  41   A_T,  /* register at pos 0 */
  42   A_A,  /* register at pos 7 */
  43   A_B,  /* register at pos 14 */
  44   A_C,  /* register at pos 21 */
  45   A_S,  /* special purpose register at pos 7 */
  46   A_H,  /* channel register at pos 7 */
  47   A_P,  /* parenthesis, this has to separate regs from immediates */
  48   A_S3,
  49   A_S6,
  50   A_S7N,
  51   A_S7,
  52   A_U7A,
  53   A_U7B,
  54   A_S10B,
  55   A_S10,
  56   A_S11,
  57   A_S11I,
  58   A_S14,
  59   A_S16,
  60   A_S18,
  61   A_R18,
  62   A_U3,
  63   A_U5,
  64   A_U6,
  65   A_U7,
  66   A_U14,
  67   A_X16,
  68   A_U18,
  69   A_MAX
  70 } spu_aformat;
  71
  72 enum spu_insns {
  73 #define APUOP(TAG,MACFORMAT,OPCODE,MNEMONIC,ASMFORMAT,DEP,PIPE) \
  74         TAG,
  75 #define APUOPFB(TAG,MACFORMAT,OPCODE,FB,MNEMONIC,ASMFORMAT,DEP,PIPE) \
  76         TAG,
  77 #include "spu-insns.h"
  78 #undef APUOP
  79 #undef APUOPFB
  80         M_SPU_MAX
  81 };
  82
  83 struct spu_opcode
  84 {
  85    spu_iformat insn_type;
  86    unsigned int opcode;
  87    char *mnemonic;
  88    int arg[5];
  89 };
  90
  91 #define SIGNED_EXTRACT(insn,size,pos) (((int)((insn) << (32-size-pos))) >> (32-size))
  92 #define UNSIGNED_EXTRACT(insn,size,pos) (((insn) >> pos) & ((1 << size)-1))
  93
  94 #define DECODE_INSN_RT(insn) (insn & 0x7f)
  95 #define DECODE_INSN_RA(insn) ((insn >> 7) & 0x7f)
  96 #define DECODE_INSN_RB(insn) ((insn >> 14) & 0x7f)
  97 #define DECODE_INSN_RC(insn) ((insn >> 21) & 0x7f)
  98
  99 #define DECODE_INSN_I10(insn) SIGNED_EXTRACT(insn,10,14)
 100 #define DECODE_INSN_U10(insn) UNSIGNED_EXTRACT(insn,10,14)
 101
 102 /* For branching, immediate loads, hbr and  lqa/stqa. */
 103 #define DECODE_INSN_I16(insn) SIGNED_EXTRACT(insn,16,7)
 104 #define DECODE_INSN_U16(insn) UNSIGNED_EXTRACT(insn,16,7)
 105
 106 /* for stop */
 107 #define DECODE_INSN_U14(insn) UNSIGNED_EXTRACT(insn,14,0)
 108
 109 /* For ila */
 110 #define DECODE_INSN_I18(insn) SIGNED_EXTRACT(insn,18,7)
 111 #define DECODE_INSN_U18(insn) UNSIGNED_EXTRACT(insn,18,7)
 112
 113 /* For rotate and shift and generate control mask */
 114 #define DECODE_INSN_I7(insn) SIGNED_EXTRACT(insn,7,14)
 115 #define DECODE_INSN_U7(insn) UNSIGNED_EXTRACT(insn,7,14)
 116
 117 /* For float <-> int conversion */
 118 #define DECODE_INSN_I8(insn)  SIGNED_EXTRACT(insn,8,14)
 119 #define DECODE_INSN_U8(insn) UNSIGNED_EXTRACT(insn,8,14)
 120
 121 /* For hbr  */
 122 #define DECODE_INSN_I9a(insn) ((SIGNED_EXTRACT(insn,2,23) << 7) | UNSIGNED_EXTRACT(insn,7,0))
 123 #define DECODE_INSN_I9b(insn) ((SIGNED_EXTRACT(insn,2,14) << 7) | UNSIGNED_EXTRACT(insn,7,0))
 124 #define DECODE_INSN_U9a(insn) ((UNSIGNED_EXTRACT(insn,2,23) << 7) | UNSIGNED_EXTRACT(insn,7,0))
 125 #define DECODE_INSN_U9b(insn) ((UNSIGNED_EXTRACT(insn,2,14) << 7) | UNSIGNED_EXTRACT(insn,7,0))
 126