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) 33extern YYSTYPE yylval; 34 35%} 36 37%option noyywrap 38 39%% 40"\n" yylineno++; 41[ \t] ; /* ignore whitespace */ 42";"[^\n]*"\n" yylineno++; /* ignore comments */ 430|[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"iret" return TOKEN(T_OP_IRET); 82"call" return TOKEN(T_OP_CALL); 83"jump" return TOKEN(T_OP_JUMP); 84"waitin" return TOKEN(T_OP_WAITIN); 85"preemptleave" return TOKEN(T_OP_PREEMPTLEAVE); 86"setsecure" return TOKEN(T_OP_SETSECURE); 87"<<" return TOKEN(T_LSHIFT); 88"(rep)" return TOKEN(T_REP); 89"(xmov"[1-3]")" yylval.num = yytext[5] - '\0'; return T_XMOV; 90 91"," return ','; 92"[" return '['; 93"]" return ']'; 94"+" return '+'; 95 96. fprintf(stderr, "error at line %d: Unknown token: %s\n", yyget_lineno(), yytext); yyterminate(); 97 98%% 99