src/freedreno/afuc/lexer.l

   1 /*
   2  * Copyright (c) 2017 Rob Clark <robdclark@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  */
  23
  24 %{
  25 #include <stdlib.h>
  26 #include "parser.h"
  27 #include "asm.h"
  28
  29 #define YY_NO_INPUT
  30 #define YY_NO_UNPUT
  31
  32 #define TOKEN(t) (yylval.tok = t)
  33 extern YYSTYPE yylval;
  34
  35 %}
  36
  37 %option noyywrap
  38
  39 %%
  40 "\n"                              yylineno++;
  41 [ \t]                             ; /* ignore whitespace */
  42 ";"[^\n]*"\n"                     yylineno++; /* ignore comments */
  43 [1-9][0-9]*                       yylval.num = strtoul(yytext, NULL, 0);    return T_INT;
  44 "0x"[0-9a-fA-F]*                  yylval.num = strtoul(yytext, NULL, 0);    return T_HEX;
  45
  46 "$"[0-9a-fA-F][0-9a-fA-F]         yylval.num = parse_reg(yytext); return T_REGISTER;
  47 "$"[a-zA-Z][a-zA-Z0-9]*           yylval.num = parse_reg(yytext); return T_REGISTER;
  48 "b"[0-9][0-9]*                    yylval.num = parse_bit(yytext); return T_BIT;
  49 "@"[a-zA-Z_][a-zA-Z0-9_]*         yylval.num = parse_control_reg(yytext); return T_CONTROL_REG;
  50 "#"[a-zA-Z_][a-zA-Z0-9_]*         yylval.str = strdup(yytext+1);  return T_LABEL_REF; /* label reference */
  51 [a-zA-Z_][a-zA-Z0-9_]*":"         yylval.str = parse_label_decl(yytext); return T_LABEL_DECL; /* label declaration */
  52 "["[0-9a-fA-F][0-9a-fA-F]*"]"     yylval.num = parse_literal(yytext); return T_LITERAL;
  53
  54                                   /* instructions: */
  55 "nop"                             return TOKEN(T_OP_NOP);
  56 "add"                             return TOKEN(T_OP_ADD);
  57 "addhi"                           return TOKEN(T_OP_ADDHI);
  58 "sub"                             return TOKEN(T_OP_SUB);
  59 "subhi"                           return TOKEN(T_OP_SUBHI);
  60 "and"                             return TOKEN(T_OP_AND);
  61 "or"                              return TOKEN(T_OP_OR);
  62 "xor"                             return TOKEN(T_OP_XOR);
  63 "not"                             return TOKEN(T_OP_NOT);
  64 "shl"                             return TOKEN(T_OP_SHL);
  65 "ushr"                            return TOKEN(T_OP_USHR);
  66 "ishr"                            return TOKEN(T_OP_ISHR);
  67 "rot"                             return TOKEN(T_OP_ROT);
  68 "mul8"                            return TOKEN(T_OP_MUL8);
  69 "min"                             return TOKEN(T_OP_MIN);
  70 "max"                             return TOKEN(T_OP_MAX);
  71 "cmp"                             return TOKEN(T_OP_CMP);
  72 "msb"                             return TOKEN(T_OP_MSB);
  73 "mov"                             return TOKEN(T_OP_MOV);
  74 "cwrite"                          return TOKEN(T_OP_CWRITE);
  75 "cread"                           return TOKEN(T_OP_CREAD);
  76 "store"                           return TOKEN(T_OP_STORE);
  77 "load"                            return TOKEN(T_OP_LOAD);
  78 "brne"                            return TOKEN(T_OP_BRNE);
  79 "breq"                            return TOKEN(T_OP_BREQ);
  80 "ret"                             return TOKEN(T_OP_RET);
  81 "call"                            return TOKEN(T_OP_CALL);
  82 "jump"                            return TOKEN(T_OP_JUMP);
  83 "waitin"                          return TOKEN(T_OP_WAITIN);
  84 "preemptleave"                    return TOKEN(T_OP_PREEMPTLEAVE);
  85 "<<"                              return TOKEN(T_LSHIFT);
  86 "(rep)"                           return TOKEN(T_REP);
  87
  88 ","                               return ',';
  89 "["                               return '[';
  90 "]"                               return ']';
  91 "+"                               return '+';
  92
  93 .                                 fprintf(stderr, "error at line %d: Unknown token: %s\n", yyget_lineno(), yytext); yyterminate();
  94
  95 %%