compilers/linux86-0.16.17/as/const.h

   1
   2 /* Speed and space hacks for BCC */
   3 #ifdef __AS386_16__
   4 #define LOW_BYTE        0       /* must be changed for big-endian */
   5 #else
   6
   7 #define S_ALIGNMENT     sizeof(long)
   8 #endif
   9
  10 /* const.h - constants for assembler */
  11
  12 /* major switches */
  13
  14 /* #define MC6809 */            /* generate 6809 code */
  15 #ifndef MC6809
  16 #define I80386                  /* generate 80386 code */
  17 #endif
  18 #define MNSIZE                  /* allow byte size in mnemonic, e.g. "movb" */
  19 #undef SOS_EDOS                 /* source OS is EDOS */
  20
  21 /* defaults */
  22
  23 #define DIRCHAR         '/'     /* character separating filename from dir */
  24 #define INBUFSIZE       8192
  25 #define SOS_EOLSTR      "\012"
  26
  27 /* defaults modified by switches */
  28
  29 #ifdef SOS_EDOS
  30 # undef INBUFSIZE
  31 # define INBUFSIZE      512
  32 # undef SOS_EOLSTR
  33 # define SOS_EOLSTR     "\015\012"
  34 # define STAKSIZ        256     /* table grows up to stack less this */
  35 #endif
  36
  37 #ifdef __AS386_16__
  38 # undef INBUFSIZE
  39 # define INBUFSIZE      512
  40 # define STAKSIZ        512     /* table grows up to stack less this */
  41 #endif
  42
  43 /* booleans */
  44
  45 #define FALSE           0
  46 #define TRUE            1
  47
  48 /* ASCII constants */
  49
  50 #define ETB             23
  51
  52 /* C tricks */
  53
  54 #define EXTERN          extern
  55 #define FORWARD         static
  56 #define PRIVATE         static
  57 #define PUBLIC
  58 #define NUL_PTR         ((void*)0)
  59
  60 /* O/S constants */
  61
  62 #define CREAT_PERMS     0666
  63 #define EOF             (-1)
  64 #define STDIN           0
  65 #define STDOUT          1
  66
  67 enum
  68 {
  69 /* Register codes (internal to assembler). */
  70 #ifdef I80386
  71
  72 /* Index regs must be first. */
  73     BPREG,
  74     BXREG,
  75     DIREG,
  76     SIREG,
  77 #define MAX16BITINDREG  SIREG
  78
  79     EAXREG,
  80     EBPREG,
  81     EBXREG,
  82     ECXREG,
  83     EDIREG,
  84     EDXREG,
  85     ESIREG,
  86     ESPREG,
  87 #define MAXINDREG       ESPREG
  88
  89     AXREG,
  90     CXREG,
  91     DXREG,
  92     SPREG,
  93
  94     AHREG,
  95     ALREG,
  96     BHREG,
  97     BLREG,
  98     CHREG,
  99     CLREG,
 100     DHREG,
 101     DLREG,
 102
 103     CSREG,
 104     DSREG,
 105     ESREG,
 106     FSREG,
 107     GSREG,
 108     SSREG,
 109
 110     CR0REG,
 111     CR2REG,
 112     CR3REG,
 113     DR0REG,
 114     DR1REG,
 115     DR2REG,
 116     DR3REG,
 117     DR6REG,
 118     DR7REG,
 119     TR3REG,
 120     TR4REG,
 121     TR5REG,
 122     TR6REG,
 123     TR7REG,
 124
 125     ST0REG,
 126     ST1REG,
 127     ST2REG,
 128     ST3REG,
 129     ST4REG,
 130     ST5REG,
 131     ST6REG,
 132     ST7REG,
 133 #endif /* I80386 */
 134
 135 #ifdef MC6809
 136
 137 /* Index regs must be first, then PC. */
 138     SREG,
 139     UREG,
 140     XREG,
 141     YREG,
 142 #define MAXINDREG       YREG
 143
 144     PCREG,
 145     AREG,
 146     BREG,
 147     CCREG,
 148     DPREG,
 149     DREG,
 150 #endif /* MC6809 */
 151
 152     NOREG
 153 };
 154
 155 #ifdef I80386
 156 enum
 157 {
 158 /* Type and size keywords. */
 159     BYTEOP,
 160     DWORDOP,
 161     FWORDOP,
 162     FAROP,
 163     PTROP,
 164     PWORDOP,
 165     QWORDOP,
 166     TBYTEOP,
 167     WORDOP
 168 };
 169 #endif /* I80386 */
 170
 171 /* special chars */
 172
 173 #define EOL             0
 174 #define MACROCHAR       '?'
 175
 176 enum
 177 {
 178 /* Symbol codes. */
 179
 180 /* The first 2 must be from chars in identifiers. */
 181     IDENT,
 182     INTCONST,
 183
 184 /* The next few are best for other possibly-multi-char tokens. */
 185     ADDOP,                      /* also ++ */
 186     BINCONST,
 187     CHARCONST,
 188     GREATERTHAN,                /* also >> and context-sensitive */
 189     HEXCONST,
 190     LESSTHAN,                   /* also << and context-sensitive */
 191     SUBOP,                      /* also -- */
 192     WHITESPACE,
 193
 194     ANDOP,
 195     COMMA,
 196     EOLSYM,
 197     EQOP,
 198     IMMEDIATE,
 199     INDIRECT,
 200     LBRACKET,
 201     LPAREN,
 202     MACROARG,
 203     NOTOP,
 204     OROP,
 205     OTHERSYM,
 206     POSTINCOP,
 207     PREDECOP,
 208     RBRACKET,
 209     RPAREN,
 210     SLASH,                      /* context-sensitive */
 211     SLOP,
 212     SROP,
 213     STAR,                       /* context-sensitive */
 214     STRINGCONST,
 215     COLON
 216 };
 217
 218 /* symbol table entry */
 219
 220                                 /* type entry contains following flags */
 221 #define ENTBIT          (1<<0)  /* entry point (= OBJ_N_MASK) */
 222 #define COMMBIT         (1<<1)  /* common */
 223 #define LABIT           (1<<2)  /* label (a PC location or defined by EQU) */
 224 #define MNREGBIT        (1<<3)  /* mnemonic for op or pseudo-op, or register */
 225 #define MACBIT          (1<<4)  /* macro */
 226 #define REDBIT          (1<<5)  /* redefined (if with LABIT or VARBIT), to do
 227                                  * with SA_MASK (if with COMMBIT), otherwise
 228                                  * means globl */
 229 #define VARBIT          (1<<6)  /* variable (i.e. something defined by SET) */
 230 #define EXPBIT          (1<<7)  /* exported (= OBJ_E_MASK) */
 231
 232                                 /* data entry contains following flags, valid */
 233                                 /* for expressions as well as syms */
 234 #define PAGE1           (1<<0)  /* page 1 machine op = MNREGBIT | PAGE1 */
 235 #define PAGE2           (1<<1)  /* page 2 machine op = MNREGBIT | PAGE2 */
 236 #define REGBIT          (1<<2)  /* register = MNREGBIT | REGBIT */
 237 #define SIZEBIT         (1<<3)  /* sizing mnemonic = MNREGBIT | SIZEBIT */
 238 #define SEGM            0x0F    /* 1st 4 bits reused for segment if !MNREGBIT */
 239 #define RELBIT          (1<<4)  /* relative (= OBJ_A_MASK) */
 240 #define FORBIT          (1<<5)  /* forward referenced */
 241 #define IMPBIT          (1<<6)  /* imported (= OBJ_I_MASK) */
 242 #define UNDBIT          (1<<7)  /* undefined */
 243
 244 /* object code format (Introl) */
 245
 246 #define OBJ_SEGSZ_TWO   0x02    /* size 2 code for segment size descriptor */
 247
 248 #define OBJ_MAX_ABS_LEN 64      /* max length of chunk of absolute code */
 249
 250 #define OBJ_ABS         0x40    /* absolute code command */
 251 #define OBJ_OFFSET_REL  0x80    /* offset relocation command */
 252 #define OBJ_SET_SEG     0x20    /* set segment command */
 253 #define OBJ_SKIP_1      0x11    /* skip with 1 byte count */
 254 #define OBJ_SKIP_2      0x12    /* skip with 2 byte count */
 255 #define OBJ_SKIP_4      0x13    /* skip with 4 byte count */
 256 #define OBJ_SYMBOL_REL  0xC0    /* symbol relocation command */
 257
 258 #define OBJ_A_MASK      0x10    /* absolute bit(symbols) */
 259 #if OBJ_A_MASK - RELBIT         /* must match internal format (~byte 1 -> 0) */
 260 oops - RELBIT misplaced
 261 #endif
 262 #define OBJ_E_MASK      0x80    /* exported bit (symbols) */
 263 #if OBJ_E_MASK - EXPBIT         /* must match internal format (byte 0 -> 0) */
 264 oops - EXPBIT misplaced
 265 #endif
 266 #define OBJ_I_MASK      0x40    /* imported bit (symbols) */
 267 #if OBJ_I_MASK - IMPBIT         /* must match internal format (byte 1 -> 0) */
 268 oops - IMPBIT misplaced
 269 #endif
 270 #define OBJ_N_MASK      0x01    /* entry bit (symbols) */
 271 #if OBJ_N_MASK - ENTBIT         /* must match internal format (byte 0 -> 1) */
 272 oops - ENTBIT misplaced
 273 #endif
 274 #define OBJ_SA_MASK     0x20    /* size allocation bit (symbols) */
 275 #define OBJ_SZ_ONE      0x40    /* size one code for symbol value */
 276 #define OBJ_SZ_TWO      0x80    /* size two code for symbol value */
 277 #define OBJ_SZ_FOUR     0xC0    /* size four code for symbol value */
 278
 279 #define OBJ_R_MASK      0x20    /* PC-rel bit (off & sym reloc commands) */
 280 #define OBJ_SEGM_MASK   0x0F    /* segment mask (symbols, off reloc command) */
 281
 282 #define OBJ_OF_MASK     0x03    /* offset size code for symbol reloc */
 283 #define OBJ_S_MASK      0x04    /* symbol number size code for symbol reloc */
 284
 285 #define SYMLIS_NAMELEN  26
 286 #define SYMLIS_LEN      (sizeof (struct sym_listing_s))
 287
 288 #define FILNAMLEN       64      /* max length of a file name */
 289 #define LINLEN          256     /* max length of input line */
 290 #define LINUM_LEN       5       /* length of formatted line number */
 291
 292 #define SPTSIZ          1024    /* number of symbol ptrs */
 293                                 /* pseudo-op flags */
 294 #define POPHI           1       /* set to print hi byte of adr */
 295 #define POPLO           2       /* to print lo byte of ADR */
 296 #define POPLC           4       /* to print LC */
 297 #define POPLONG         8       /* to print high word of ADR */
 298 #define MAXBLOCK        8       /* max nesting level of BLOCK stack */
 299 #define MAXGET          8       /* max nesting level of GET stack */
 300 #define MAXIF           8       /* max nesting level of IF stack */
 301 #define MACPSIZ         (128 / sizeof (struct schain_s))
 302                                 /* size of macro param buffer */
 303 #define MAXMAC          8       /* max nesting level of macro stack */
 304 #define NLOC            16      /* number of location counters */
 305 #ifdef I80386
 306 #define NO_SIB          0340    /* illegal sib (3 with 4) to mean no sib */
 307 #endif
 308
 309 /* special segments */
 310
 311 #define BSSLOC          3
 312 #define DATALOC         3
 313 #define DPLOC           2
 314 #define STRLOC          1
 315 #define TEXTLOC         0
 316
 317 #include "errors.h"
 318