/* 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.

<arch>-opc.h additions use: "-- opc.h"

<arch>-opc.c additions use: "-- opc.c"

<arch>-asm.c additions use: "-- asm.c"

<arch>-dis.c additions use: "-- dis.c"

<arch>-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 */

/* Print an operand with a "." prefix.

NOTE: This prints the operand in hex.

??? This exists to maintain disassembler compatibility with previous

versions. Ideally we'd print the "." in print_dot. */

static void

print_with_dot_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

int length ATTRIBUTE_UNUSED)

{

disassemble_info *info = (disassemble_info *) dis_info;

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

info->fprintf_func (info->stream, "0x%lx", value);

}

/* Print an operand with a "#pof:" prefix.

NOTE: This prints the operand as an address.

??? This exists to maintain disassembler compatibility with previous

versions. Ideally we'd print "#pof:" in print_pof. */

static void

print_with_pof_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

int length ATTRIBUTE_UNUSED)

{

disassemble_info *info = (disassemble_info *) dis_info;

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

info->fprintf_func (info->stream, "0x%lx", (long) value);

}

/* Print an operand with a "#pag:" prefix.

NOTE: This prints the operand in hex.

??? This exists to maintain disassembler compatibility with previous

versions. Ideally we'd print "#pag:" in print_pag. */

static void

print_with_pag_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

int length ATTRIBUTE_UNUSED)

{

disassemble_info *info = (disassemble_info *) dis_info;

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

info->fprintf_func (info->stream, "0x%lx", value);

}

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

static void

print_pof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

int length ATTRIBUTE_UNUSED)

{

}

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

static void

print_pag (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,

int length ATTRIBUTE_UNUSED)

{

}

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

static void

print_sof (CGEN_CPU_DESC cd 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,

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,

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,

int length ATTRIBUTE_UNUSED)

{

}

/* -- */