Subversion Repositories openrisc_2011-10-31

/* XC16X opcode support.  -*- C -*-

   Copyright 2006, 2007, 2009 Free Software Foundation, Inc.

   Contributed by KPIT Cummins Infosystems Ltd.; developed under contract

   from Infineon Systems, GMBH , Germany.

   This file is part of 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, 51 Franklin Street - Fifth Floor, Boston, MA

   02110-1301, USA.  */

/* This file is an addendum to xc16x.cpu.  Heavy use of C code isn't

   appropriate in .cpu files, so it resides here.  This especially applies

   to assembly/disassembly where parsing/printing can be quite involved.

   Such things aren't really part of the specification of the cpu, per se,

   so .cpu files provide the general framework and .opc files handle the

   nitty-gritty details as necessary.

   Each section is delimited with start and end markers.

   -opc.h additions use: "-- opc.h"

   -opc.c additions use: "-- opc.c"

   -asm.c additions use: "-- asm.c"

   -dis.c additions use: "-- dis.c"

   -ibd.h additions use: "-- ibd.h"  */

/* -- opc.h */

#define CGEN_DIS_HASH_SIZE 8

#define CGEN_DIS_HASH(buf,value) (((* (unsigned char*) (buf)) >> 3) % CGEN_DIS_HASH_SIZE)

/* -- */

/* -- opc.c */

/* -- */

/* -- asm.c */

/* Handle '#' prefixes (i.e. skip over them).  */

static const char *

parse_hash (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

            const char **strp,

            int opindex ATTRIBUTE_UNUSED,

            long *valuep ATTRIBUTE_UNUSED)

{

  if (**strp == '#')

    {

      ++*strp;

      return NULL;

    }

  return _("Missing '#' prefix");

}

/* Handle '.' prefixes (i.e. skip over them).  */

static const char *

parse_dot (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

           const char **strp,

           int opindex ATTRIBUTE_UNUSED,

           long *valuep ATTRIBUTE_UNUSED)

{

  if (**strp == '.')

    {

      ++*strp;

      return NULL;

    }

  return _("Missing '.' prefix");

}

/* Handle 'pof:' prefixes (i.e. skip over them).  */

static const char *

parse_pof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

           const char **strp,

           int opindex ATTRIBUTE_UNUSED,

           long *valuep ATTRIBUTE_UNUSED)

{

  if (strncasecmp (*strp, "pof:", 4) == 0)

    {

      *strp += 4;

      return NULL;

    }

  return _("Missing 'pof:' prefix");

}

/* Handle 'pag:' prefixes (i.e. skip over them).  */

static const char *

parse_pag (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

           const char **strp,

           int opindex ATTRIBUTE_UNUSED,

           long *valuep ATTRIBUTE_UNUSED)

{

  if (strncasecmp (*strp, "pag:", 4) == 0)

    {

      *strp += 4;

      return NULL;

    }

  return _("Missing 'pag:' prefix");

}

/* Handle 'sof' prefixes (i.e. skip over them).  */

static const char *

parse_sof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

           const char **strp,

           int opindex ATTRIBUTE_UNUSED,

           long *valuep ATTRIBUTE_UNUSED)

{

  if (strncasecmp (*strp, "sof:", 4) == 0)

    {

      *strp += 4;

      return NULL;

    }

  return _("Missing 'sof:' prefix");

}

/* Handle 'seg' prefixes (i.e. skip over them).  */

static const char *

parse_seg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

           const char **strp,

           int opindex ATTRIBUTE_UNUSED,

           long *valuep ATTRIBUTE_UNUSED)

{

  if (strncasecmp (*strp, "seg:", 4) == 0)

    {

      *strp += 4;

      return NULL;

    }

  return _("Missing 'seg:' prefix");

}

/* -- */

/* -- dis.c */

#define CGEN_PRINT_NORMAL(cd, info, value, attrs, pc, length)   \

  do                                                            \

    {                                                           \

      if (CGEN_BOOL_ATTR ((attrs), CGEN_OPERAND_DOT_PREFIX))    \

        info->fprintf_func (info->stream, ".");                 \

      if (CGEN_BOOL_ATTR ((attrs), CGEN_OPERAND_POF_PREFIX))    \

        info->fprintf_func (info->stream, "#pof:");             \

      if (CGEN_BOOL_ATTR ((attrs), CGEN_OPERAND_PAG_PREFIX))    \

        info->fprintf_func (info->stream, "#pag:");             \

    }                                                           \

  while (0)

/* Print a 'pof:' prefix to an operand.  */

static void

print_pof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

           void * dis_info ATTRIBUTE_UNUSED,

           long value ATTRIBUTE_UNUSED,

           unsigned int attrs ATTRIBUTE_UNUSED,

           bfd_vma pc ATTRIBUTE_UNUSED,

           int length ATTRIBUTE_UNUSED)

{

}

/* Print a 'pag:' prefix to an operand.  */

static void

print_pag (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

           void * dis_info ATTRIBUTE_UNUSED,

           long value ATTRIBUTE_UNUSED,

           unsigned int attrs ATTRIBUTE_UNUSED,

           bfd_vma pc ATTRIBUTE_UNUSED,

           int length ATTRIBUTE_UNUSED)

{

}

/* Print a 'sof:' prefix to an operand.  */

static void

print_sof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

           void * dis_info,

           long value ATTRIBUTE_UNUSED,

           unsigned int attrs ATTRIBUTE_UNUSED,

           bfd_vma pc ATTRIBUTE_UNUSED,

           int length ATTRIBUTE_UNUSED)

{

  disassemble_info *info = (disassemble_info *) dis_info;

  info->fprintf_func (info->stream, "sof:");

}

/* Print a 'seg:' prefix to an operand.  */

static void

print_seg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

           void * dis_info,

           long value ATTRIBUTE_UNUSED,

           unsigned int attrs ATTRIBUTE_UNUSED,

           bfd_vma pc ATTRIBUTE_UNUSED,

           int length ATTRIBUTE_UNUSED)

{

  disassemble_info *info = (disassemble_info *) dis_info;

  info->fprintf_func (info->stream, "seg:");

}

/* Print a '#' prefix to an operand.  */

static void

print_hash (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

            void * dis_info,

            long value ATTRIBUTE_UNUSED,

            unsigned int attrs ATTRIBUTE_UNUSED,

            bfd_vma pc ATTRIBUTE_UNUSED,

            int length ATTRIBUTE_UNUSED)

{

  disassemble_info *info = (disassemble_info *) dis_info;

  info->fprintf_func (info->stream, "#");

}

/* Print a '.' prefix to an operand.  */

static void

print_dot (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

           void * dis_info ATTRIBUTE_UNUSED,

           long value ATTRIBUTE_UNUSED,

           unsigned int attrs ATTRIBUTE_UNUSED,

           bfd_vma pc ATTRIBUTE_UNUSED,

           int length ATTRIBUTE_UNUSED)

{

}

/* -- */