gas/config/m68k-parse.h

   1 /* m68k-parse.h -- header file for m68k assembler
   2    Copyright 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000,
   3    2003, 2004, 2005, 2007 Free Software Foundation, Inc.
   4
   5    This file is part of GAS, the GNU Assembler.
   6
   7    GAS is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3, or (at your option)
  10    any later version.
  11
  12    GAS is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GAS; see the file COPYING.  If not, write to the Free
  19    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
  20    02110-1301, USA.  */
  21
  22 #ifndef M68K_PARSE_H
  23 #define M68K_PARSE_H
  24
  25 /* This header file defines things which are shared between the
  26    operand parser in m68k.y and the m68k assembler proper in
  27    tc-m68k.c.  */
  28
  29 /* The various m68k registers.  */
  30
  31 /* DATA and ADDR have to be contiguous, so that reg-DATA gives
  32    0-7==data reg, 8-15==addr reg for operands that take both types.
  33
  34    We don't use forms like "ADDR0 = ADDR" here because this file is
  35    likely to be used on an Apollo, and the broken Apollo compiler
  36    gives an `undefined variable' error if we do that, according to
  37    troy@cbme.unsw.edu.au.  */
  38
  39 #define DATA DATA0
  40 #define ADDR ADDR0
  41 #define SP ADDR7
  42 #define BAD BAD0
  43 #define BAC BAC0
  44
  45 enum m68k_register
  46 {
  47   DATA0 = 1,                    /*   1- 8 == data registers 0-7 */
  48   DATA1,
  49   DATA2,
  50   DATA3,
  51   DATA4,
  52   DATA5,
  53   DATA6,
  54   DATA7,
  55
  56   ADDR0,
  57   ADDR1,
  58   ADDR2,
  59   ADDR3,
  60   ADDR4,
  61   ADDR5,
  62   ADDR6,
  63   ADDR7,
  64
  65   FP0,                          /* Eight FP registers */
  66   FP1,
  67   FP2,
  68   FP3,
  69   FP4,
  70   FP5,
  71   FP6,
  72   FP7,
  73
  74   COP0,                         /* Co-processor #0-#7 */
  75   COP1,
  76   COP2,
  77   COP3,
  78   COP4,
  79   COP5,
  80   COP6,
  81   COP7,
  82
  83   PC,                           /* Program counter */
  84   ZPC,                          /* Hack for Program space, but 0 addressing */
  85   SR,                           /* Status Reg */
  86   CCR,                          /* Condition code Reg */
  87   ACC,                          /* Accumulator Reg0 (EMAC or ACC on MAC).  */
  88   ACC1,                         /* Accumulator Reg 1 (EMAC).  */
  89   ACC2,                         /* Accumulator Reg 2 (EMAC).  */
  90   ACC3,                         /* Accumulator Reg 3 (EMAC).  */
  91   ACCEXT01,                     /* Accumulator extension 0&1 (EMAC).  */
  92   ACCEXT23,                     /* Accumulator extension 2&3 (EMAC).  */
  93   MACSR,                        /* MAC Status Reg */
  94   MASK,                         /* Modulus Reg */
  95
  96   /* These have to be grouped together for the movec instruction to work.  */
  97   USP,                          /*  User Stack Pointer */
  98   ISP,                          /*  Interrupt stack pointer */
  99   SFC,
 100   DFC,
 101   CACR,
 102   VBR,
 103   CAAR,
 104   MSP,
 105   ITT0,
 106   ITT1,
 107   DTT0,
 108   DTT1,
 109   MMUSR,
 110   TC,
 111   SRP,
 112   URP,
 113   BUSCR,                        /* 68060 added these.  */
 114   PCR,
 115   ROMBAR,                       /* mcf5200 added these.  */
 116   RAMBAR_ALT,                   /* Some CF chips have RAMBAR using
 117                                    RAMBAR0's number */
 118   RAMBAR0,
 119   RAMBAR1,
 120   MMUBAR,                       /* mcfv4e added these.  */
 121   ROMBAR0,                      /* mcfv4e added these.  */
 122   ROMBAR1,                      /* mcfv4e added these.  */
 123   MPCR, EDRAMBAR, SECMBAR,      /* mcfv4e added these.  */
 124   PCR1U0, PCR1L0, PCR1U1, PCR1L1,/* mcfv4e added these.  */
 125   PCR2U0, PCR2L0, PCR2U1, PCR2L1,/* mcfv4e added these.  */
 126   PCR3U0, PCR3L0, PCR3U1, PCR3L1,/* mcfv4e added these.  */
 127   MBAR0, MBAR1,                 /* mcfv4e added these.  */
 128   ACR0, ACR1, ACR2, ACR3,       /* mcf5200 added these.  */
 129   FLASHBAR, RAMBAR,             /* mcf528x added these.  */
 130   MBAR2,                        /* mcf5249 added this.  */
 131   MBAR,
 132   ASID,                         /* m5475.  */
 133   CAC,                          /* fido added this.  */
 134   MBO,
 135 #define last_movec_reg MBO
 136   /* End of movec ordering constraints.  */
 137
 138   FPI,
 139   FPS,
 140   FPC,
 141
 142   DRP,                          /* 68851 or 68030 MMU regs */
 143   CRP,
 144   CAL,
 145   VAL,
 146   SCC,
 147   AC,
 148   BAD0,
 149   BAD1,
 150   BAD2,
 151   BAD3,
 152   BAD4,
 153   BAD5,
 154   BAD6,
 155   BAD7,
 156   BAC0,
 157   BAC1,
 158   BAC2,
 159   BAC3,
 160   BAC4,
 161   BAC5,
 162   BAC6,
 163   BAC7,
 164   PSR,                          /* aka MMUSR on 68030 (but not MMUSR on 68040)
 165                                    and ACUSR on 68ec030 */
 166   PCSR,
 167
 168   IC,                           /* instruction cache token */
 169   DC,                           /* data cache token */
 170   NC,                           /* no cache token */
 171   BC,                           /* both caches token */
 172
 173   TT0,                          /* 68030 access control unit regs */
 174   TT1,
 175
 176   ZDATA0,                       /* suppressed data registers.  */
 177   ZDATA1,
 178   ZDATA2,
 179   ZDATA3,
 180   ZDATA4,
 181   ZDATA5,
 182   ZDATA6,
 183   ZDATA7,
 184
 185   ZADDR0,                       /* suppressed address registers.  */
 186   ZADDR1,
 187   ZADDR2,
 188   ZADDR3,
 189   ZADDR4,
 190   ZADDR5,
 191   ZADDR6,
 192   ZADDR7,
 193
 194   /* Upper and lower half of data and address registers.  Order *must*
 195      be DATAxL, ADDRxL, DATAxU, ADDRxU.  */
 196   DATA0L,                       /* lower half of data registers */
 197   DATA1L,
 198   DATA2L,
 199   DATA3L,
 200   DATA4L,
 201   DATA5L,
 202   DATA6L,
 203   DATA7L,
 204
 205   ADDR0L,                       /* lower half of address registers */
 206   ADDR1L,
 207   ADDR2L,
 208   ADDR3L,
 209   ADDR4L,
 210   ADDR5L,
 211   ADDR6L,
 212   ADDR7L,
 213
 214   DATA0U,                       /* upper half of data registers */
 215   DATA1U,
 216   DATA2U,
 217   DATA3U,
 218   DATA4U,
 219   DATA5U,
 220   DATA6U,
 221   DATA7U,
 222
 223   ADDR0U,                       /* upper half of address registers */
 224   ADDR1U,
 225   ADDR2U,
 226   ADDR3U,
 227   ADDR4U,
 228   ADDR5U,
 229   ADDR6U,
 230   ADDR7U,
 231 };
 232
 233 /* Size information.  */
 234
 235 enum m68k_size
 236 {
 237   /* Unspecified.  */
 238   SIZE_UNSPEC,
 239
 240   /* Byte.  */
 241   SIZE_BYTE,
 242
 243   /* Word (2 bytes).  */
 244   SIZE_WORD,
 245
 246   /* Longword (4 bytes).  */
 247   SIZE_LONG
 248 };
 249
 250 /* The structure used to hold information about an index register.  */
 251
 252 struct m68k_indexreg
 253 {
 254   /* The index register itself.  */
 255   enum m68k_register reg;
 256
 257   /* The size to use.  */
 258   enum m68k_size size;
 259
 260   /* The value to scale by.  */
 261   int scale;
 262 };
 263
 264 #ifdef OBJ_ELF
 265 /* The type of a PIC expression.  */
 266
 267 enum pic_relocation
 268 {
 269   pic_none,                     /* not pic */
 270   pic_plt_pcrel,                /* @PLTPC */
 271   pic_got_pcrel,                /* @GOTPC */
 272   pic_plt_off,                  /* @PLT */
 273   pic_got_off                   /* @GOT */
 274 };
 275 #endif
 276
 277 /* The structure used to hold information about an expression.  */
 278
 279 struct m68k_exp
 280 {
 281   /* The size to use.  */
 282   enum m68k_size size;
 283
 284 #ifdef OBJ_ELF
 285   /* The type of pic relocation if any.  */
 286   enum pic_relocation pic_reloc;
 287 #endif
 288
 289   /* The expression itself.  */
 290   expressionS exp;
 291 };
 292
 293 /* The operand modes.  */
 294
 295 enum m68k_operand_type
 296 {
 297   IMMED = 1,
 298   ABSL,
 299   DREG,
 300   AREG,
 301   FPREG,
 302   CONTROL,
 303   AINDR,
 304   AINC,
 305   ADEC,
 306   DISP,
 307   BASE,
 308   POST,
 309   PRE,
 310   LSH,  /* MAC/EMAC scalefactor '<<'.  */
 311   RSH,  /* MAC/EMAC scalefactor '>>'.  */
 312   REGLST
 313 };
 314
 315 /* The structure used to hold a parsed operand.  */
 316
 317 struct m68k_op
 318 {
 319   /* The type of operand.  */
 320   enum m68k_operand_type mode;
 321
 322   /* The main register.  */
 323   enum m68k_register reg;
 324
 325   /* The register mask for mode REGLST.  */
 326   unsigned long mask;
 327
 328   /* An error message.  */
 329   const char *error;
 330
 331   /* The index register.  */
 332   struct m68k_indexreg index;
 333
 334   /* The displacement.  */
 335   struct m68k_exp disp;
 336
 337   /* The outer displacement.  */
 338   struct m68k_exp odisp;
 339
 340   /* Is a trailing '&' added to an <ea>? (for MAC/EMAC mask addressing).  */
 341   int trailing_ampersand;
 342 };
 343
 344 #endif /* ! defined (M68K_PARSE_H) */
 345
 346 /* The parsing function.  */
 347
 348 extern int m68k_ip_op (char *, struct m68k_op *);
 349
 350 /* Whether register prefixes are optional.  */
 351 extern int flag_reg_prefix_optional;