1 /* bfin-defs.h ADI Blackfin gas header file 2 Copyright 2005 3 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 2, 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 BFIN_PARSE_H 23 #define BFIN_PARSE_H 24 25 #include <bfd.h> 26 #include "as.h" 27 28 #define PCREL 1 29 #define CODE_FRAG_SIZE 4096 /* 1 page. */ 30 31 32 /* Definition for all status bits. */ 33 typedef enum 34 { 35 c_0, 36 c_1, 37 c_4, 38 c_2, 39 c_uimm2, 40 c_uimm3, 41 c_imm3, 42 c_pcrel4, 43 c_imm4, 44 c_uimm4s4, 45 c_uimm4, 46 c_uimm4s2, 47 c_negimm5s4, 48 c_imm5, 49 c_uimm5, 50 c_imm6, 51 c_imm7, 52 c_imm8, 53 c_uimm8, 54 c_pcrel8, 55 c_uimm8s4, 56 c_pcrel8s4, 57 c_lppcrel10, 58 c_pcrel10, 59 c_pcrel12, 60 c_imm16s4, 61 c_luimm16, 62 c_imm16, 63 c_huimm16, 64 c_rimm16, 65 c_imm16s2, 66 c_uimm16s4, 67 c_uimm16, 68 c_pcrel24 69 } const_forms_t; 70 71 72 /* High-Nibble: group code, low nibble: register code. */ 73 74 75 #define T_REG_R 0x00 76 #define T_REG_P 0x10 77 #define T_REG_I 0x20 78 #define T_REG_B 0x30 79 #define T_REG_L 0x34 80 #define T_REG_M 0x24 81 #define T_REG_A 0x40 82 83 /* All registers above this value don't 84 belong to a usuable register group. */ 85 #define T_NOGROUP 0xa0 86 87 /* Flags. */ 88 #define F_REG_ALL 0x1000 89 #define F_REG_HIGH 0x2000 /* Half register: high half. */ 90 91 enum machine_registers 92 { 93 REG_R0 = T_REG_R, REG_R1, REG_R2, REG_R3, REG_R4, REG_R5, REG_R6, REG_R7, 94 REG_P0 = T_REG_P, REG_P1, REG_P2, REG_P3, REG_P4, REG_P5, REG_SP, REG_FP, 95 REG_I0 = T_REG_I, REG_I1, REG_I2, REG_I3, 96 REG_M0 = T_REG_M, REG_M1, REG_M2, REG_M3, 97 REG_B0 = T_REG_B, REG_B1, REG_B2, REG_B3, 98 REG_L0 = T_REG_L, REG_L1, REG_L2, REG_L3, 99 REG_A0x = T_REG_A, REG_A0w, REG_A1x, REG_A1w, 100 REG_ASTAT = 0x46, 101 REG_RETS = 0x47, 102 REG_LC0 = 0x60, REG_LT0, REG_LB0, REG_LC1, REG_LT1, REG_LB1, 103 REG_CYCLES, REG_CYCLES2, 104 REG_USP = 0x70, REG_SEQSTAT, REG_SYSCFG, 105 REG_RETI, REG_RETX, REG_RETN, REG_RETE, REG_EMUDAT, 106 107 /* These don't have groups. */ 108 REG_sftreset = T_NOGROUP, REG_omode, REG_excause, REG_emucause, 109 REG_idle_req, REG_hwerrcause, 110 REG_A0 = 0xc0, REG_A1, REG_CC, 111 /* Pseudo registers, used only for distinction from symbols. */ 112 REG_RL0, REG_RL1, REG_RL2, REG_RL3, 113 REG_RL4, REG_RL5, REG_RL6, REG_RL7, 114 REG_RH0, REG_RH1, REG_RH2, REG_RH3, 115 REG_RH4, REG_RH5, REG_RH6, REG_RH7, 116 REG_LASTREG 117 }; 118 119 /* Status register flags. */ 120 121 enum statusflags 122 { 123 S_AZ = 0, 124 S_AN, 125 S_AQ = 6, 126 S_AC0 = 12, 127 S_AC1, 128 S_AV0 = 16, 129 S_AV0S, 130 S_AV1, 131 S_AV1S, 132 S_V = 24, 133 S_VS = 25 134 }; 135 136 137 enum reg_class 138 { 139 rc_dregs_lo, 140 rc_dregs_hi, 141 rc_dregs, 142 rc_dregs_pair, 143 rc_pregs, 144 rc_spfp, 145 rc_dregs_hilo, 146 rc_accum_ext, 147 rc_accum_word, 148 rc_accum, 149 rc_iregs, 150 rc_mregs, 151 rc_bregs, 152 rc_lregs, 153 rc_dpregs, 154 rc_gregs, 155 rc_regs, 156 rc_statbits, 157 rc_ignore_bits, 158 rc_ccstat, 159 rc_counters, 160 rc_dregs2_sysregs1, 161 rc_open, 162 rc_sysregs2, 163 rc_sysregs3, 164 rc_allregs, 165 LIM_REG_CLASSES 166 }; 167 168 /* mmod field. */ 169 #define M_S2RND 1 170 #define M_T 2 171 #define M_W32 3 172 #define M_FU 4 173 #define M_TFU 6 174 #define M_IS 8 175 #define M_ISS2 9 176 #define M_IH 11 177 #define M_IU 12 178 179 /* Register type checking macros. */ 180 181 #define CODE_MASK 0x07 182 #define CLASS_MASK 0xf0 183 184 #define REG_SAME(a, b) ((a).regno == (b).regno) 185 #define REG_EQUAL(a, b) (((a).regno & CODE_MASK) == ((b).regno & CODE_MASK)) 186 #define REG_CLASS(a) ((a.regno) & 0xf0) 187 #define IS_A1(a) ((a).regno == REG_A1) 188 #define IS_H(a) ((a).regno & F_REG_HIGH ? 1: 0) 189 #define IS_EVEN(r) (r.regno % 2 == 0) 190 #define IS_HCOMPL(a, b) (REG_EQUAL(a, b) && \ 191 ((a).regno & F_REG_HIGH) != ((b).regno & F_REG_HIGH)) 192 193 /* register type checking. */ 194 #define _TYPECHECK(r, x) (((r).regno & CLASS_MASK) == T_REG_##x) 195 196 #define IS_DREG(r) _TYPECHECK(r, R) 197 #define IS_DREG_H(r) (_TYPECHECK(r, R) && IS_H(r)) 198 #define IS_DREG_L(r) (_TYPECHECK(r, R) && !IS_H(r)) 199 #define IS_PREG(r) _TYPECHECK(r, P) 200 #define IS_IREG(r) (((r).regno & 0xf4) == T_REG_I) 201 #define IS_MREG(r) (((r).regno & 0xf4) == T_REG_M) 202 #define IS_BREG(r) (((r).regno & 0xf4) == T_REG_B) 203 #define IS_LREG(r) (((r).regno & 0xf4) == T_REG_L) 204 #define IS_CREG(r) ((r).regno == REG_LC0 || (r).regno == REG_LC1) 205 #define IS_ALLREG(r) ((r).regno < T_NOGROUP) 206 207 /* Expression value macros. */ 208 209 typedef enum 210 { 211 ones_compl, 212 twos_compl, 213 mult, 214 divide, 215 mod, 216 add, 217 sub, 218 lsh, 219 rsh, 220 logand, 221 logior, 222 logxor 223 } expr_opcodes_t; 224 225 struct expressionS; 226 227 #define SYMBOL_T symbolS* 228 229 struct expression_cell 230 { 231 int value; 232 SYMBOL_T symbol; 233 }; 234 235 /* User Type Definitions. */ 236 struct bfin_insn 237 { 238 unsigned long value; 239 struct bfin_insn *next; 240 struct expression_cell *exp; 241 int pcrel; 242 int reloc; 243 }; 244 245 #define INSTR_T struct bfin_insn* 246 #define EXPR_T struct expression_cell* 247 248 typedef struct expr_node_struct Expr_Node; 249 250 extern INSTR_T gencode (unsigned long x); 251 extern INSTR_T conscode (INSTR_T head, INSTR_T tail); 252 extern INSTR_T conctcode (INSTR_T head, INSTR_T tail); 253 extern INSTR_T note_reloc 254 (INSTR_T code, Expr_Node *, int reloc,int pcrel); 255 extern INSTR_T note_reloc1 256 (INSTR_T code, const char * sym, int reloc, int pcrel); 257 extern INSTR_T note_reloc2 258 (INSTR_T code, const char *symbol, int reloc, int value, int pcrel); 259 260 /* Types of expressions. */ 261 typedef enum 262 { 263 Expr_Node_Binop, /* Binary operator. */ 264 Expr_Node_Unop, /* Unary operator. */ 265 Expr_Node_Reloc, /* Symbol to be relocated. */ 266 Expr_Node_GOT_Reloc, /* Symbol to be relocated using the GOT. */ 267 Expr_Node_Constant /* Constant. */ 268 } Expr_Node_Type; 269 270 /* Types of operators. */ 271 typedef enum 272 { 273 Expr_Op_Type_Add, 274 Expr_Op_Type_Sub, 275 Expr_Op_Type_Mult, 276 Expr_Op_Type_Div, 277 Expr_Op_Type_Mod, 278 Expr_Op_Type_Lshift, 279 Expr_Op_Type_Rshift, 280 Expr_Op_Type_BAND, /* Bitwise AND. */ 281 Expr_Op_Type_BOR, /* Bitwise OR. */ 282 Expr_Op_Type_BXOR, /* Bitwise exclusive OR. */ 283 Expr_Op_Type_LAND, /* Logical AND. */ 284 Expr_Op_Type_LOR, /* Logical OR. */ 285 Expr_Op_Type_NEG, 286 Expr_Op_Type_COMP /* Complement. */ 287 } Expr_Op_Type; 288 289 /* The value that can be stored ... depends on type. */ 290 typedef union 291 { 292 const char *s_value; /* if relocation symbol, the text. */ 293 int i_value; /* if constant, the value. */ 294 Expr_Op_Type op_value; /* if operator, the value. */ 295 } Expr_Node_Value; 296 297 /* The expression node. */ 298 struct expr_node_struct 299 { 300 Expr_Node_Type type; 301 Expr_Node_Value value; 302 Expr_Node *Left_Child; 303 Expr_Node *Right_Child; 304 }; 305 306 307 /* Operations on the expression node. */ 308 Expr_Node *Expr_Node_Create (Expr_Node_Type type, 309 Expr_Node_Value value, 310 Expr_Node *Left_Child, 311 Expr_Node *Right_Child); 312 313 /* Generate the reloc structure as a series of instructions. */ 314 INSTR_T Expr_Node_Gen_Reloc (Expr_Node *head, int parent_reloc); 315 316 #define MKREF(x) mkexpr (0,x) 317 #define ALLOCATE(x) malloc (x) 318 319 #define NULL_CODE ((INSTR_T) 0) 320 321 #ifndef EXPR_VALUE 322 #define EXPR_VALUE(x) (((x)->type == Expr_Node_Constant) ? ((x)->value.i_value) : 0) 323 #endif 324 #ifndef EXPR_SYMBOL 325 #define EXPR_SYMBOL(x) ((x)->symbol) 326 #endif 327 328 329 typedef long reg_t; 330 331 332 typedef struct _register 333 { 334 reg_t regno; /* Register ID as defined in machine_registers. */ 335 int flags; 336 } Register; 337 338 339 typedef struct _macfunc 340 { 341 char n; 342 char op; 343 char w; 344 char P; 345 Register dst; 346 Register s0; 347 Register s1; 348 } Macfunc; 349 350 typedef struct _opt_mode 351 { 352 int MM; 353 int mod; 354 } Opt_mode; 355 356 typedef enum 357 { 358 SEMANTIC_ERROR, 359 NO_INSN_GENERATED, 360 INSN_GENERATED 361 } parse_state; 362 363 364 #ifdef __cplusplus 365 extern "C" { 366 #endif 367 368 extern int debug_codeselection; 369 370 void error (char *format, ...); 371 void warn (char *format, ...); 372 int semantic_error (char *syntax); 373 void semantic_error_2 (char *syntax); 374 375 EXPR_T mkexpr (int, SYMBOL_T); 376 377 extern void bfin_equals (Expr_Node *sym); 378 /* Defined in bfin-lex.l. */ 379 void set_start_state (void); 380 381 #ifdef __cplusplus 382 } 383 #endif 384 385 #endif /* BFIN_PARSE_H */ 386 387