cpu/xc16x.opc

   1 /* XC16X opcode support.  -*- C -*-
   2
   3    Copyright 2006, 2007, 2009 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 /* Print an operand with a "." prefix.
 153    NOTE: This prints the operand in hex.
 154    ??? This exists to maintain disassembler compatibility with previous
 155    versions.  Ideally we'd print the "." in print_dot.  */
 156
 157 static void
 158 print_with_dot_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 159                        void * dis_info,
 160                        long value,
 161                        unsigned attrs ATTRIBUTE_UNUSED,
 162                        bfd_vma pc ATTRIBUTE_UNUSED,
 163                        int length ATTRIBUTE_UNUSED)
 164 {
 165   disassemble_info *info = (disassemble_info *) dis_info;
 166
 167   info->fprintf_func (info->stream, ".");
 168   info->fprintf_func (info->stream, "0x%lx", value);
 169 }
 170
 171 /* Print an operand with a "#pof:" prefix.
 172    NOTE: This prints the operand as an address.
 173    ??? This exists to maintain disassembler compatibility with previous
 174    versions.  Ideally we'd print "#pof:" in print_pof.  */
 175
 176 static void
 177 print_with_pof_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 178                        void * dis_info,
 179                        bfd_vma value,
 180                        unsigned attrs ATTRIBUTE_UNUSED,
 181                        bfd_vma pc ATTRIBUTE_UNUSED,
 182                        int length ATTRIBUTE_UNUSED)
 183 {
 184   disassemble_info *info = (disassemble_info *) dis_info;
 185
 186   info->fprintf_func (info->stream, "#pof:");
 187   info->fprintf_func (info->stream, "0x%lx", (long) value);
 188 }
 189
 190 /* Print an operand with a "#pag:" prefix.
 191    NOTE: This prints the operand in hex.
 192    ??? This exists to maintain disassembler compatibility with previous
 193    versions.  Ideally we'd print "#pag:" in print_pag.  */
 194
 195 static void
 196 print_with_pag_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 197                        void * dis_info,
 198                        long value,
 199                        unsigned attrs ATTRIBUTE_UNUSED,
 200                        bfd_vma pc ATTRIBUTE_UNUSED,
 201                        int length ATTRIBUTE_UNUSED)
 202 {
 203   disassemble_info *info = (disassemble_info *) dis_info;
 204
 205   info->fprintf_func (info->stream, "#pag:");
 206   info->fprintf_func (info->stream, "0x%lx", value);
 207 }
 208
 209 /* Print a 'pof:' prefix to an operand.  */
 210
 211 static void
 212 print_pof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 213            void * dis_info ATTRIBUTE_UNUSED,
 214            long value ATTRIBUTE_UNUSED,
 215            unsigned int attrs ATTRIBUTE_UNUSED,
 216            bfd_vma pc ATTRIBUTE_UNUSED,
 217            int length ATTRIBUTE_UNUSED)
 218 {
 219 }
 220
 221 /* Print a 'pag:' prefix to an operand.  */
 222
 223 static void
 224 print_pag (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 225            void * dis_info ATTRIBUTE_UNUSED,
 226            long value ATTRIBUTE_UNUSED,
 227            unsigned int attrs ATTRIBUTE_UNUSED,
 228            bfd_vma pc ATTRIBUTE_UNUSED,
 229            int length ATTRIBUTE_UNUSED)
 230 {
 231 }
 232
 233 /* Print a 'sof:' prefix to an operand.  */
 234
 235 static void
 236 print_sof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 237            void * dis_info,
 238            long value ATTRIBUTE_UNUSED,
 239            unsigned int attrs ATTRIBUTE_UNUSED,
 240            bfd_vma pc ATTRIBUTE_UNUSED,
 241            int length ATTRIBUTE_UNUSED)
 242 {
 243   disassemble_info *info = (disassemble_info *) dis_info;
 244
 245   info->fprintf_func (info->stream, "sof:");
 246 }
 247
 248 /* Print a 'seg:' prefix to an operand.  */
 249
 250 static void
 251 print_seg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 252            void * dis_info,
 253            long value ATTRIBUTE_UNUSED,
 254            unsigned int attrs ATTRIBUTE_UNUSED,
 255            bfd_vma pc ATTRIBUTE_UNUSED,
 256            int length ATTRIBUTE_UNUSED)
 257 {
 258   disassemble_info *info = (disassemble_info *) dis_info;
 259
 260   info->fprintf_func (info->stream, "seg:");
 261 }
 262
 263 /* Print a '#' prefix to an operand.  */
 264
 265 static void
 266 print_hash (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 267             void * dis_info,
 268             long value ATTRIBUTE_UNUSED,
 269             unsigned int attrs ATTRIBUTE_UNUSED,
 270             bfd_vma pc ATTRIBUTE_UNUSED,
 271             int length ATTRIBUTE_UNUSED)
 272 {
 273   disassemble_info *info = (disassemble_info *) dis_info;
 274
 275   info->fprintf_func (info->stream, "#");
 276 }
 277
 278 /* Print a '.' prefix to an operand.  */
 279
 280 static void
 281 print_dot (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 282            void * dis_info ATTRIBUTE_UNUSED,
 283            long value ATTRIBUTE_UNUSED,
 284            unsigned int attrs ATTRIBUTE_UNUSED,
 285            bfd_vma pc ATTRIBUTE_UNUSED,
 286            int length ATTRIBUTE_UNUSED)
 287 {
 288 }
 289
 290 /* -- */