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/*
* Copyright (c) 2017 Rob Clark <robdclark@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
%{
#include <stdlib.h>
#include "parser.h"
#include "asm.h"
#define YY_NO_INPUT
#define YY_NO_UNPUT
#define TOKEN(t) (yylval.tok = t)
extern YYSTYPE yylval;
%}
%option noyywrap
%%
"\n" yylineno++;
[ \t] ; /* ignore whitespace */
";"[^\n]*"\n" yylineno++; /* ignore comments */
[1-9][0-9]* yylval.num = strtoul(yytext, NULL, 0); return T_INT;
"0x"[0-9a-fA-F]* yylval.num = strtoul(yytext, NULL, 0); return T_HEX;
"$"[0-9a-fA-F][0-9a-fA-F] yylval.num = parse_reg(yytext); return T_REGISTER;
"$"[a-zA-Z][a-zA-Z0-9]* yylval.num = parse_reg(yytext); return T_REGISTER;
"b"[0-9][0-9]* yylval.num = parse_bit(yytext); return T_BIT;
"@"[a-zA-Z_][a-zA-Z0-9_]* yylval.num = parse_control_reg(yytext); return T_CONTROL_REG;
"#"[a-zA-Z_][a-zA-Z0-9_]* yylval.str = strdup(yytext+1); return T_LABEL_REF; /* label reference */
[a-zA-Z_][a-zA-Z0-9_]*":" yylval.str = parse_label_decl(yytext); return T_LABEL_DECL; /* label declaration */
"["[0-9a-fA-F][0-9a-fA-F]*"]" yylval.num = parse_literal(yytext); return T_LITERAL;
/* instructions: */
"nop" return TOKEN(T_OP_NOP);
"add" return TOKEN(T_OP_ADD);
"addhi" return TOKEN(T_OP_ADDHI);
"sub" return TOKEN(T_OP_SUB);
"subhi" return TOKEN(T_OP_SUBHI);
"and" return TOKEN(T_OP_AND);
"or" return TOKEN(T_OP_OR);
"xor" return TOKEN(T_OP_XOR);
"not" return TOKEN(T_OP_NOT);
"shl" return TOKEN(T_OP_SHL);
"ushr" return TOKEN(T_OP_USHR);
"ishr" return TOKEN(T_OP_ISHR);
"rot" return TOKEN(T_OP_ROT);
"mul8" return TOKEN(T_OP_MUL8);
"min" return TOKEN(T_OP_MIN);
"max" return TOKEN(T_OP_MAX);
"cmp" return TOKEN(T_OP_CMP);
"msb" return TOKEN(T_OP_MSB);
"mov" return TOKEN(T_OP_MOV);
"cwrite" return TOKEN(T_OP_CWRITE);
"cread" return TOKEN(T_OP_CREAD);
"store" return TOKEN(T_OP_STORE);
"load" return TOKEN(T_OP_LOAD);
"brne" return TOKEN(T_OP_BRNE);
"breq" return TOKEN(T_OP_BREQ);
"ret" return TOKEN(T_OP_RET);
"iret" return TOKEN(T_OP_IRET);
"call" return TOKEN(T_OP_CALL);
"jump" return TOKEN(T_OP_JUMP);
"waitin" return TOKEN(T_OP_WAITIN);
"preemptleave" return TOKEN(T_OP_PREEMPTLEAVE);
"setsecure" return TOKEN(T_OP_SETSECURE);
"<<" return TOKEN(T_LSHIFT);
"(rep)" return TOKEN(T_REP);
"(xmov"[1-3]")" yylval.num = yytext[5] - '\0'; return T_XMOV;
"," return ',';
"[" return '[';
"]" return ']';
"+" return '+';
. fprintf(stderr, "error at line %d: Unknown token: %s\n", yyget_lineno(), yytext); yyterminate();
%%
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