Subversion Repositories openrisc_me

/* SPU ELF support for BFD.

   Copyright 2006, 2010 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 3 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.  */

/* These two enums are from rel_apu/common/spu_asm_format.h */

/* definition of instruction format */

typedef enum {

  RRR,

  RI18,

  RI16,

  RI10,

  RI8,

  RI7,

  RR,

  LBT,

  LBTI,

  IDATA,

  UNKNOWN_IFORMAT

} spu_iformat;

/* These values describe assembly instruction arguments.  They indicate

 * how to encode, range checking and which relocation to use. */

typedef enum {

  A_T,  /* register at pos 0 */

  A_A,  /* register at pos 7 */

  A_B,  /* register at pos 14 */

  A_C,  /* register at pos 21 */

  A_S,  /* special purpose register at pos 7 */

  A_H,  /* channel register at pos 7 */

  A_P,  /* parenthesis, this has to separate regs from immediates */

  A_S3,

  A_S6,

  A_S7N,

  A_S7,

  A_U7A,

  A_U7B,

  A_S10B,

  A_S10,

  A_S11,

  A_S11I,

  A_S14,

  A_S16,

  A_S18,

  A_R18,

  A_U3,

  A_U5,

  A_U6,

  A_U7,

  A_U14,

  A_X16,

  A_U18,

  A_MAX

} spu_aformat;

enum spu_insns {

#define APUOP(TAG,MACFORMAT,OPCODE,MNEMONIC,ASMFORMAT,DEP,PIPE) \

        TAG,

#define APUOPFB(TAG,MACFORMAT,OPCODE,FB,MNEMONIC,ASMFORMAT,DEP,PIPE) \

        TAG,

#include "opcode/spu-insns.h"

#undef APUOP

#undef APUOPFB

        M_SPU_MAX

};

struct spu_opcode

{

   spu_iformat insn_type;

   unsigned int opcode;

   char *mnemonic;

   int arg[5];

};

#define SIGNED_EXTRACT(insn,size,pos) (((int)((insn) << (32-size-pos))) >> (32-size))

#define UNSIGNED_EXTRACT(insn,size,pos) (((insn) >> pos) & ((1 << size)-1))

#define DECODE_INSN_RT(insn) (insn & 0x7f)

#define DECODE_INSN_RA(insn) ((insn >> 7) & 0x7f)

#define DECODE_INSN_RB(insn) ((insn >> 14) & 0x7f)

#define DECODE_INSN_RC(insn) ((insn >> 21) & 0x7f)

#define DECODE_INSN_I10(insn) SIGNED_EXTRACT(insn,10,14)

#define DECODE_INSN_U10(insn) UNSIGNED_EXTRACT(insn,10,14)

/* For branching, immediate loads, hbr and  lqa/stqa. */

#define DECODE_INSN_I16(insn) SIGNED_EXTRACT(insn,16,7)

#define DECODE_INSN_U16(insn) UNSIGNED_EXTRACT(insn,16,7)

/* for stop */

#define DECODE_INSN_U14(insn) UNSIGNED_EXTRACT(insn,14,0)

/* For ila */

#define DECODE_INSN_I18(insn) SIGNED_EXTRACT(insn,18,7)

#define DECODE_INSN_U18(insn) UNSIGNED_EXTRACT(insn,18,7)

/* For rotate and shift and generate control mask */

#define DECODE_INSN_I7(insn) SIGNED_EXTRACT(insn,7,14)

#define DECODE_INSN_U7(insn) UNSIGNED_EXTRACT(insn,7,14)

/* For float <-> int conversion */

#define DECODE_INSN_I8(insn)  SIGNED_EXTRACT(insn,8,14)

#define DECODE_INSN_U8(insn) UNSIGNED_EXTRACT(insn,8,14)

/* For hbr  */

#define DECODE_INSN_I9a(insn) ((SIGNED_EXTRACT(insn,2,23) << 7) | UNSIGNED_EXTRACT(insn,7,0))

#define DECODE_INSN_I9b(insn) ((SIGNED_EXTRACT(insn,2,14) << 7) | UNSIGNED_EXTRACT(insn,7,0))

#define DECODE_INSN_U9a(insn) ((UNSIGNED_EXTRACT(insn,2,23) << 7) | UNSIGNED_EXTRACT(insn,7,0))

#define DECODE_INSN_U9b(insn) ((UNSIGNED_EXTRACT(insn,2,14) << 7) | UNSIGNED_EXTRACT(insn,7,0))