cpu/xc16x.opc

   1 /* XC16X opcode support.  -*- C -*-
   2
   3    Copyright 2006, 2007 Free Software Foundation, Inc.
   4
   5    Contributed by KPIT Cummins Infosystems Ltd.; developed under contract
   6    from Infineon Systems, GMBH , Germany.
   7
   8    This file is part of the GNU Binutils.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
  23    02110-1301, USA.  */
  24
  25
  26 /* This file is an addendum to xc16x.cpu.  Heavy use of C code isn't
  27    appropriate in .cpu files, so it resides here.  This especially applies
  28    to assembly/disassembly where parsing/printing can be quite involved.
  29    Such things aren't really part of the specification of the cpu, per se,
  30    so .cpu files provide the general framework and .opc files handle the
  31    nitty-gritty details as necessary.
  32
  33    Each section is delimited with start and end markers.
  34
  35    <arch>-opc.h additions use: "-- opc.h"
  36    <arch>-opc.c additions use: "-- opc.c"
  37    <arch>-asm.c additions use: "-- asm.c"
  38    <arch>-dis.c additions use: "-- dis.c"
  39    <arch>-ibd.h additions use: "-- ibd.h"  */
  40 \f
  41 /* -- opc.h */
  42
  43 #define CGEN_DIS_HASH_SIZE 8
  44 #define CGEN_DIS_HASH(buf,value) (((* (unsigned char*) (buf)) >> 3) % CGEN_DIS_HASH_SIZE)
  45
  46 /* -- */
  47 \f
  48 /* -- opc.c */
  49
  50 /* -- */
  51 \f
  52 /* -- asm.c */
  53 /* Handle '#' prefixes (i.e. skip over them).  */
  54
  55 static const char *
  56 parse_hash (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
  57             const char **strp,
  58             int opindex ATTRIBUTE_UNUSED,
  59             long *valuep ATTRIBUTE_UNUSED)
  60 {
  61   if (**strp == '#')
  62     {
  63       ++*strp;
  64       return NULL;
  65     }
  66   return _("Missing '#' prefix");
  67 }
  68
  69 /* Handle '.' prefixes (i.e. skip over them).  */
  70
  71 static const char *
  72 parse_dot (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
  73            const char **strp,
  74            int opindex ATTRIBUTE_UNUSED,
  75            long *valuep ATTRIBUTE_UNUSED)
  76 {
  77   if (**strp == '.')
  78     {
  79       ++*strp;
  80       return NULL;
  81     }
  82   return _("Missing '.' prefix");
  83 }
  84
  85 /* Handle 'pof:' prefixes (i.e. skip over them).  */
  86
  87 static const char *
  88 parse_pof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
  89            const char **strp,
  90            int opindex ATTRIBUTE_UNUSED,
  91            long *valuep ATTRIBUTE_UNUSED)
  92 {
  93   if (strncasecmp (*strp, "pof:", 4) == 0)
  94     {
  95       *strp += 4;
  96       return NULL;
  97     }
  98   return _("Missing 'pof:' prefix");
  99 }
 100
 101 /* Handle 'pag:' prefixes (i.e. skip over them).  */
 102
 103 static const char *
 104 parse_pag (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 105            const char **strp,
 106            int opindex ATTRIBUTE_UNUSED,
 107            long *valuep ATTRIBUTE_UNUSED)
 108 {
 109   if (strncasecmp (*strp, "pag:", 4) == 0)
 110     {
 111       *strp += 4;
 112       return NULL;
 113     }
 114   return _("Missing 'pag:' prefix");
 115 }
 116
 117 /* Handle 'sof' prefixes (i.e. skip over them).  */
 118
 119 static const char *
 120 parse_sof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 121            const char **strp,
 122            int opindex ATTRIBUTE_UNUSED,
 123            long *valuep ATTRIBUTE_UNUSED)
 124 {
 125   if (strncasecmp (*strp, "sof:", 4) == 0)
 126     {
 127       *strp += 4;
 128       return NULL;
 129     }
 130   return _("Missing 'sof:' prefix");
 131 }
 132
 133 /* Handle 'seg' prefixes (i.e. skip over them).  */
 134
 135 static const char *
 136 parse_seg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 137            const char **strp,
 138            int opindex ATTRIBUTE_UNUSED,
 139            long *valuep ATTRIBUTE_UNUSED)
 140 {
 141   if (strncasecmp (*strp, "seg:", 4) == 0)
 142     {
 143       *strp += 4;
 144       return NULL;
 145     }
 146   return _("Missing 'seg:' prefix");
 147 }
 148 /* -- */
 149 \f
 150 /* -- dis.c */
 151
 152 #define CGEN_PRINT_NORMAL(cd, info, value, attrs, pc, length)   \
 153   do                                                            \
 154     {                                                           \
 155       if (CGEN_BOOL_ATTR ((attrs), CGEN_OPERAND_DOT_PREFIX))    \
 156         info->fprintf_func (info->stream, ".");                 \
 157       if (CGEN_BOOL_ATTR ((attrs), CGEN_OPERAND_POF_PREFIX))    \
 158         info->fprintf_func (info->stream, "#pof:");             \
 159       if (CGEN_BOOL_ATTR ((attrs), CGEN_OPERAND_PAG_PREFIX))    \
 160         info->fprintf_func (info->stream, "#pag:");             \
 161     }                                                           \
 162   while (0)
 163
 164 /* Print a 'pof:' prefix to an operand.  */
 165
 166 static void
 167 print_pof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 168            void * dis_info ATTRIBUTE_UNUSED,
 169            long value ATTRIBUTE_UNUSED,
 170            unsigned int attrs ATTRIBUTE_UNUSED,
 171            bfd_vma pc ATTRIBUTE_UNUSED,
 172            int length ATTRIBUTE_UNUSED)
 173 {
 174 }
 175
 176 /* Print a 'pag:' prefix to an operand.  */
 177
 178 static void
 179 print_pag (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 180            void * dis_info ATTRIBUTE_UNUSED,
 181            long value ATTRIBUTE_UNUSED,
 182            unsigned int attrs ATTRIBUTE_UNUSED,
 183            bfd_vma pc ATTRIBUTE_UNUSED,
 184            int length ATTRIBUTE_UNUSED)
 185 {
 186 }
 187
 188 /* Print a 'sof:' prefix to an operand.  */
 189
 190 static void
 191 print_sof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 192            void * dis_info,
 193            long value ATTRIBUTE_UNUSED,
 194            unsigned int attrs ATTRIBUTE_UNUSED,
 195            bfd_vma pc ATTRIBUTE_UNUSED,
 196            int length ATTRIBUTE_UNUSED)
 197 {
 198   disassemble_info *info = (disassemble_info *) dis_info;
 199
 200   info->fprintf_func (info->stream, "sof:");
 201 }
 202
 203 /* Print a 'seg:' prefix to an operand.  */
 204
 205 static void
 206 print_seg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 207            void * dis_info,
 208            long value ATTRIBUTE_UNUSED,
 209            unsigned int attrs ATTRIBUTE_UNUSED,
 210            bfd_vma pc ATTRIBUTE_UNUSED,
 211            int length ATTRIBUTE_UNUSED)
 212 {
 213   disassemble_info *info = (disassemble_info *) dis_info;
 214
 215   info->fprintf_func (info->stream, "seg:");
 216 }
 217
 218 /* Print a '#' prefix to an operand.  */
 219
 220 static void
 221 print_hash (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 222             void * dis_info,
 223             long value ATTRIBUTE_UNUSED,
 224             unsigned int attrs ATTRIBUTE_UNUSED,
 225             bfd_vma pc ATTRIBUTE_UNUSED,
 226             int length ATTRIBUTE_UNUSED)
 227 {
 228   disassemble_info *info = (disassemble_info *) dis_info;
 229
 230   info->fprintf_func (info->stream, "#");
 231 }
 232
 233 /* Print a '.' prefix to an operand.  */
 234
 235 static void
 236 print_dot (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 237            void * dis_info ATTRIBUTE_UNUSED,
 238            long value ATTRIBUTE_UNUSED,
 239            unsigned int attrs ATTRIBUTE_UNUSED,
 240            bfd_vma pc ATTRIBUTE_UNUSED,
 241            int length ATTRIBUTE_UNUSED)
 242 {
 243 }
 244
 245 /* -- */