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[/] [zipcpu/] [trunk/] [sw/] [zasm/] [zasm.l] - Blame information for rev 26

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1 13 dgisselq
/*******************************************************************************
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**
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** Filename:    zasm.l
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**
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** Project:     Zip CPU -- a small, lightweight, RISC CPU core
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**
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** Purpose:     The lexical analyzer for the assembler.  This converts assembler
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**              input into tokens, to feed the parser.
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**
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**
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** Creator:     Dan Gisselquist, Ph.D.
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**              Gisselquist Tecnology, LLC
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**
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********************************************************************************
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**
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** Copyright (C) 2015, Gisselquist Technology, LLC
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**
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** This program is free software (firmware): you can redistribute it and/or
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** modify it under the terms of  the GNU General Public License as published
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** by the Free Software Foundation, either version 3 of the License, or (at
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** your option) any later version.
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**
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** This program is distributed in the hope that it will be useful, but WITHOUT
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** ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
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** FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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** for more details.
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**
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** You should have received a copy of the GNU General Public License along
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** with this program.  (It's in the $(ROOT)/doc directory, run make with no
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** target there if the PDF file isn't present.)  If not, see
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**  for a copy.
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**
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** License:     GPL, v3, as defined and found on www.gnu.org,
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**              http://www.gnu.org/licenses/gpl.html
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**
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**
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*******************************************************************************/
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%{
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#include 
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#include "asmdata.h"
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#include "zasm.tab.h"
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extern "C" int yylex();
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extern "C" int  yywrap() { return 1;}
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extern  char *master_input_filename;
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%}
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%option yylineno
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%option warn
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%%
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54 26 dgisselq
"#line"[ \t]+[0-9]+[ \t]+[\"][^"]*[\"][ \t]*$ {
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        /* This should really be true *only* at the beginning of a line,
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        * however such line beginnings aren't matching.  My guess is that
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        * the reason is my line copying code at the bottom that sucks up the
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        * newline for LEX.  Hence, this is what we have.
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        */
60 13 dgisselq
                yylineno = atoi(&yytext[6]);
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                char    *bg, *en;
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                bg = strchr(yytext, '\"')+1;
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                en = strchr(bg, '\"'); *en = '\0';
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                if ((master_input_filename == NULL)||(strcmp(master_input_filename, bg)!=0)) {
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                        if (!master_input_filename) delete[] master_input_filename;
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                        master_input_filename = new char[en-bg+2];
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                        strcpy(master_input_filename, bg);
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                }
69 26 dgisselq
                return '\n';
70 13 dgisselq
                }
71 26 dgisselq
"#line"[ \t]+[0-9]+[ \t]*$      { yylineno = atoi(&yytext[6]); return '\n';}
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^"#line".*$             { printf("WARNING: Unmatched #line: %s\n", yytext); return '\n'; }
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"#line".*$              { printf("WARNING: Unmatched #line, not at beginnning: %s\n", yytext); return '\n'; }
74 13 dgisselq
[uU][rR]1[0-5]  { yylval.u_reg=(ZPARSER::ZIPREG)(26+yytext[3]-'0');return REG; }
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[sS][rR]1[0-5]  { yylval.u_reg=(ZPARSER::ZIPREG)(10+yytext[3]-'0');return REG; }
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[rR]1[0-5]      { yylval.u_reg=(ZPARSER::ZIPREG)(10+yytext[2]-'0');return REG; }
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[uU][rR][0-9]   { yylval.u_reg=(ZPARSER::ZIPREG)(16+yytext[2]-'0');return REG; }
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[sS][rR][0-9]   { yylval.u_reg=(ZPARSER::ZIPREG)(   yytext[2]-'0');return REG; }
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[rR][0-9]       { yylval.u_reg=(ZPARSER::ZIPREG)(   yytext[1]-'0');return REG; }
80 26 dgisselq
(?i:upc)        { yylval.u_reg = ZPARSER::ZIP_uPC; return REG; }
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(?i:spc)        { yylval.u_reg = ZPARSER::ZIP_PC; return REG; }
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(?i:pc)         { yylval.u_reg = ZPARSER::ZIP_PC; return REG; }
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(?i:ucc)        { yylval.u_reg = ZPARSER::ZIP_uCC; return REG; }
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(?i:scc)        { yylval.u_reg = ZPARSER::ZIP_CC; return REG; }
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(?i:cc)         { yylval.u_reg = ZPARSER::ZIP_CC; return REG; }
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(?i:usp)        { yylval.u_reg = ZPARSER::ZIP_uSP; return REG; }
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(?i:ssp)        { yylval.u_reg = ZPARSER::ZIP_SP; return REG; }
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(?i:sp)         { yylval.u_reg = ZPARSER::ZIP_SP; return REG; }
89 13 dgisselq
[bB][rR][aA]    { yylval.u_op  = OP_BRA; return BRANCHOP; }
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[bB][rR][zZ]    { yylval.u_op  = OP_BZ;  return BRANCHOP; }
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[bB][zZ]        { yylval.u_op  = OP_BZ;  return BRANCHOP; }
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[bB][nN][zZ]    { yylval.u_op  = OP_BNZ; return BRANCHOP; }
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[bB][nN][eE]    { yylval.u_op  = OP_BNZ; return BRANCHOP; }
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[bB][gG][eE]    { yylval.u_op  = OP_BGE; return BRANCHOP; }
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[bB][gG][tT]    { yylval.u_op  = OP_BGT; return BRANCHOP; }
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[bB][gG]        { yylval.u_op  = OP_BGT; return BRANCHOP; }
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[bB][lL][tT]    { yylval.u_op  = OP_BLT; return BRANCHOP; }
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[bB][nN]        { yylval.u_op  = OP_BLT; return BRANCHOP; }
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[bB][rR][cC]    { yylval.u_op  = OP_BRC; return BRANCHOP; }
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[bB][cC]        { yylval.u_op  = OP_BRC; return BRANCHOP; }
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[bB][rR][vV]    { yylval.u_op  = OP_BRV; return BRANCHOP; }
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[bB][vV]        { yylval.u_op  = OP_BRV; return BRANCHOP; }
103 26 dgisselq
(?i:clr)        { yylval.u_op  = OP_CLR; return SINGLOP; }
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(?i:clrf)       {yylval.u_op  = OP_CLRF;return SINGLOP; }
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(?i:int)        { yylval.u_op  = OP_TRAP;return SINGLOP; }
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(?i:trap)       {yylval.u_op  = OP_TRAP;return SINGLOP; }
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(?i:jmp)        { yylval.u_op  = OP_JMP; return SINGLOP; }
108 13 dgisselq
[lL][jJ][mM][pP] {yylval.u_op  = OP_LJMP;return SINGLOP; }
109 26 dgisselq
(?i:neg)        { yylval.u_op  = OP_NEG; return SINGLOP; }
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(?i:not)        { yylval.u_op  = OP_NOT; return SINGLOP; }
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(?i:cmp)        { yylval.u_op  = OP_CMP; return DUALOP; }
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(?i:tst)        { yylval.u_op  = OP_TST; return DUALOP; }
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(?i:mov)        { yylval.u_op  = OP_MOV; return DUALOP; }
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(?i:ldi)        { yylval.u_op  = OP_LDI; return LDIOP; }
115 13 dgisselq
[lL][dD][iI][hH][iI]    { yylval.u_op =OP_LDIHI; return LDHLOP; }
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[lL][dD][iI][lL][oO]    { yylval.u_op =OP_LDILO; return LDHLOP; }
117 26 dgisselq
(?i:mpyu)       { yylval.u_op = OP_MPYU; return DUALOP; }
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(?i:mpys)       { yylval.u_op = OP_MPYS; return DUALOP; }
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(?i:rol)        { yylval.u_op  = OP_ROL; return DUALOP; }
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(?i:sub)        { yylval.u_op  = OP_SUB; return DUALOP; }
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(?i:and)        { yylval.u_op  = OP_AND; return DUALOP; }
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(?i:add)        { yylval.u_op  = OP_ADD; return DUALOP; }
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(?i:or)         { yylval.u_op  = OP_OR; return DUALOP;; }
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(?i:xor)        { yylval.u_op  = OP_XOR; return DUALOP; }
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(?i:lsl)        { yylval.u_op  = OP_LSL; return DUALOP; }
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(?i:asr)        { yylval.u_op  = OP_ASR; return DUALOP; }
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(?i:lsr)        { yylval.u_op  = OP_LSR; return DUALOP; }
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(?i:lod)        { yylval.u_op = OP_LOD;   return LOADOP; }
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(?i:sto)        { yylval.u_op = OP_STO;   return STOROP; }
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(?i:halt)       { yylval.u_op = OP_HALT;  return BAREOP;  }
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(?i:wait)       { yylval.u_op = OP_HALT;  return BAREOP;  }
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(?i:rtu)        { yylval.u_op = OP_RTU;   return BAREOP;  }
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(?i:nop)        { yylval.u_op = OP_NOOP;  return BAREOP; }
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(?i:noop)       { yylval.u_op = OP_NOOP;  return BAREOP; }
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(?i:break)      { yylval.u_op = OP_BREAK; return BAREOP; }
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(?i:brk)        { yylval.u_op = OP_BREAK; return BAREOP; }
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(?i:busy)       { yylval.u_op = OP_BUSY;  return BAREOP; }
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(?i:equ)        { return EQU; }
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(?i:fill)       { return FILL; }
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(?i:word)       { return WORD; }
141 13 dgisselq
"__"[hH][eE][rR][eE]"__" { return HERE; }
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[\.][dD][aA][tT] { return WORD; }
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[\.][zZ]/[ \t\n]        { yylval.u_cond = ZPARSER::ZIPC_Z; return COND; }
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[\.][nN][eE]/[ \t\n]    { yylval.u_cond = ZPARSER::ZIPC_NZ; return COND; }
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[\.][nN][zZ]/[ \t\n]    { yylval.u_cond = ZPARSER::ZIPC_NZ; return COND; }
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[\.][gG][eE]/[ \t\n]    { yylval.u_cond = ZPARSER::ZIPC_GE; return COND; }
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[\.][gG][tT]/[ \t\n]    { yylval.u_cond = ZPARSER::ZIPC_GT; return COND; }
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[\.][lL][tT]/[ \t\n]    { yylval.u_cond = ZPARSER::ZIPC_LT; return COND; }
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[\.][nN]/[ \t\n]        { yylval.u_cond = ZPARSER::ZIPC_LT; return COND; }
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[\.][cC]/[ \t\n]        { yylval.u_cond = ZPARSER::ZIPC_C; return COND; }
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[\.][vV]/[ \t\n]        { yylval.u_cond = ZPARSER::ZIPC_V; return COND; }
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[_A-Za-z][_a-zA-Z0-9]* { yylval.u_id  = strdup(yytext); return IDENTIFIER; }
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"$"?[-]?0[xX][0-9A-Fa-f]+ { yylval.u_ival = strtoul(yytext+(((*yytext)=='$')?1:0),NULL,16);return INT;}
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"$"?[-]?0[0-7]+           { yylval.u_ival = strtoul(yytext+(((*yytext)=='$')?1:0),NULL, 8);return INT;}
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"$"?[-]?[1-9][0-9]*       { yylval.u_ival = strtoul(yytext+(((*yytext)=='$')?1:0),NULL,10);return INT;}
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"$"?[-]?[1-9A-Fa-f][0-9A-Fa-f]*h {yylval.u_ival=strtoul(yytext+(((*yytext)=='$')?1:0),NULL,16); return INT;}
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"$"?[-]?[0-7]+o           { yylval.u_ival = strtoul(yytext+(((*yytext)=='$')?1:0),NULL, 8);return INT;}
158 26 dgisselq
"\'"[^\\\']"\'"         { printf("Match char, %s\n", yytext); yylval.u_ival = yytext[1]&0x0ff; return INT; }
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"\'\\"[abnr\\]"\'"              {
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                yylval.u_ival = yytext[2];
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                if (yytext[2] == 'a') yylval.u_ival = '\a';
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                else if (yytext[2] == 'b') yylval.u_ival = '\b';
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                else if (yytext[2] == 'f') yylval.u_ival = '\f';
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                else if (yytext[2] == 'n') yylval.u_ival = '\n';
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                else if (yytext[2] == 'r') yylval.u_ival = '\r';
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                else if (yytext[2] == 't') yylval.u_ival = '\t';
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                else if (yytext[2] == 'v') yylval.u_ival = '\v';
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                else if (yytext[2] == '0') yylval.u_ival = '\0';
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                else if (yytext[2] == '\\') yylval.u_ival = '\\';
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                return INT; }
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"\'"[^\\\'][^\\\']"\'"          { yylval.u_ival = ((yytext[1]&0x0ff)<<8)+(yytext[2]&0x0ff); return INT; }
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"\'"[^\\\'][^\\\'][^\\\']"\'"           { yylval.u_ival = ((yytext[1]&0x0ff)<<16)
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                                        +((yytext[2]&0x0ff)<<8)
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                                        +(yytext[3]&0x0ff); return INT; }
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"\'"[^\\\'][^\\\'][^\\\'][^\\\']"\'"    { yylval.u_ival = ((yytext[1]&0x0ff)<<24)
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                                        +((yytext[2]&0x0ff)<<16)
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                                        +((yytext[3]&0x0ff)<<8)
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                                        +(yytext[4]&0x0ff); return INT; }
179 13 dgisselq
"$"?"0"           { yylval.u_ival = 0;return INT;}
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"$"             { return DOLLAR; }
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","             { return COMMA; }
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"+"             { return PLUS; }
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"-"             { return MINUS; }
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"*"             { return TIMES; }
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"||"            { return BOOLEANOR; }
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"|"             { return BITWISEOR; }
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"&&"		{ return BOOLEANAND; }
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"&"		{ return BITWISEAND; }
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"^"             { return BITWISEXOR; }
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":"             { return COLON; }
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"."             { return DOT; }
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[ \t]+          { }
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[(]             { return '('; }
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[)]             { return ')'; }
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\n.*            { if (linecp) free(linecp); linecp = strdup(&yytext[1]); yyless(1); return '\n'; }
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%%
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