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