URL
https://opencores.org/ocsvn/diogenes/diogenes/trunk
Subversion Repositories diogenes
[/] [diogenes/] [tags/] [initial/] [asm/] [yacc.in] - Rev 237
Go to most recent revision | Compare with Previous | Blame | View Log
%{
#include <stdio.h>
#include <string.h>
#include "tools.h"
#define YYERROR_VERBOSE
int temp;
int firstpass=1;
void yyerror(const char *str)
{
fprintf(stderr,"error: %s\n",str);
}
int yywrap()
{
return 1;
}
int main(int argc, char **argv)
{
if(argc>=2) {
if(!strcmp(argv[1], "-h")) hex = 1;
if(!strcmp(argv[1], "-b")) hex = 2;
}
if(!hash_init()) {
exit(1);
printf("could not create hash table\n");
}
if(hex && argc==3) stdin = fopen(argv[2], "r");
if(!hex && argc==2) stdin = fopen(argv[1], "r");
firstpass = 1;
address = 0;
if(yyparse()) exit(1);
firstpass = 0;
address = 0;
rewind(stdin);
(void) PROC_FLUSH_BUF (stdin );
yyparse();
return 0;
}
%}
%token C OBRA CBRA OSBRA CSBRA NUM
%union
{
int num;
char *str;
}
%token <str> IMM LABEL USELAB
%token <num> REG
%token <num> ARI LDI LSI CMP BR SHA JUMP CALL MOV MEM SEL SELI LDL NOP
%type <num> asms asm nop ari ldsi cmp br sha jmpcall mov mem sel seli ldl
%type <num> imm6b imm8b imm8bs imm2b imm32
%%
asms: asm | asms asm
asm: LABEL {if(firstpass)add_label($1, address);}
| nop {if(!firstpass)xprintf($1);address++;}
| ari {if(!firstpass)xprintf($1);address++;}
| ldsi {if(!firstpass)xprintf($1);address++;}
| cmp {if(!firstpass)xprintf($1);address++;}
| br {if(!firstpass)xprintf($1);address++;}
| sha {if(!firstpass)xprintf($1);address++;}
| jmpcall {if(!firstpass)xprintf($1);address++;}
| mov {if(!firstpass)xprintf($1);address++;}
| mem {if(!firstpass)xprintf($1);address++;}
| sel {if(!firstpass)xprintf($1);address++;}
| seli {if(!firstpass)xprintf($1);address++;}
| ldl {;}
// | { yyerror("unknown instruction"); YYERROR; }
nop: NOP { $$ = $1; }
ari: ARI REG C REG C REG { $$ = ($1<<12) | ($2<<8) | ($4<<4) | $6; }
ldsi: LDI REG C imm8b { $$ = (0x6000) | ($2<<8) | ($4&0xff); }
| LSI REG C imm8b { $$ = (0x7000) | ($2<<8) | ($4&0xff); }
cmp: CMP REG C REG C REG { $$ = (0x8000) | ($1<<12) | ($2<<8) | ($4<<4) | $6;}
br: BR REG C USELAB { $$ = (0xc000) | ($1<<12) | (((get_label($4)-address)&0xff) << 4) | $2;
// if(!firstpass) printf(" @%d - %d: %d", address, $4, get_label($4));
}
| BR REG C imm8bs { $$ = (0xc000) | ($1<<12) | (($4&0xff) << 4) | $2; }
sha: SHA REG C imm6b { $$ = (0xe000) | ($2<<8) | ($1<<6) | ($4&0x3f); }
| SHA REG C REG C imm6b { if(($2^0x8) != $4) { yyerror("wrong sister register"); YYERROR; }
$$ = (0xe000) | ($2<<8) | (1<<7) | ($1<<6) | ($6&0x3f); }
jmpcall:JUMP OSBRA REG CSBRA { $$ = (0xf000) | ($3<<4) | $1; }
| CALL REG C OSBRA REG CSBRA { $$ = (0xf000) | ($2<<8) | ($5<<4) | $1; }
mov: MOV REG C REG { $$ = (0xf000) | ($2<<8) | ($4<<4) | 1; }
mem: MEM REG C OBRA REG CBRA { $$ = (0xf000) | ($2<<8) | ($5<<4) | $1; }
sel: SEL REG C OBRA REG CBRA { $$ = (0xf000) | ($2<<8) | ($5<<4) | $1; }
| SEL REG C REG C OBRA REG CBRA { if(($2^0x8) != $4) { yyerror("wrong sister register"); YYERROR; }
$$ = (0xf000) | ($2<<8) | ($7<<4) | (1<<3) | $1; }
seli: SELI REG C imm2b { $$ = (0xf000) | ($2<<8) | ($4<<6) | $1; }
| SELI REG C REG C imm2b { if(($2^0x8) != $4) { yyerror("wrong sister register"); YYERROR; }
$$ = (0xf000) | ($2<<8) | ($6<<4) | (1<<3) | $1; }
ldl: LDL REG C imm32
{ if(!firstpass)xprintf(0x6000|($2<<8)|(($4>>24)&0xff));address++;
if(!firstpass)xprintf(0x7000|($2<<8)|(($4>>18)&0xff));address++;
if(!firstpass)xprintf(0x7000|($2<<8)|(($4>>8)&0xff));address++;
if(!firstpass)xprintf(0x7000|($2<<8)|(($4>>0)&0xff));address++;
}
| LDL REG C USELAB
{ temp = get_abs_label($4);
if(!firstpass)xprintf(0x6000|($2<<8)|((temp>>24)&0xff));address++;
if(!firstpass)xprintf(0x7000|($2<<8)|((temp>>18)&0xff));address++;
if(!firstpass)xprintf(0x7000|($2<<8)|((temp>>8)&0xff));address++;
if(!firstpass)xprintf(0x7000|($2<<8)|((temp>>0)&0xff));address++;
}
imm2b: IMM {
temp = check_imm($1, &$$, 0, 3);
if(temp==1) { yyerror("2 Bit immediate expected"); YYERROR; }
if(temp==2) { yyerror("Immediate syntax"); YYERROR; }
}
imm8b: IMM {
temp = check_imm($1, &$$, 0, 255);
if(temp==1) { yyerror("8 Bit unsigned immediate expected"); YYERROR; }
if(temp==2) { yyerror("Immediate syntax"); YYERROR; }
}
imm8bs: IMM {
temp = check_imm($1, &$$, -128, 127);
if(temp==1) { yyerror("8 bit signed immediate expected"); YYERROR; }
if(temp==2) { yyerror("Immediate syntax"); YYERROR; }
}
// | LABEL { $$ = get_label($1) - address - 1; }
imm6b: IMM {
temp = check_imm($1, &$$, -32, 31);
if(temp==1) { printf("Immediate Value %d out of range: -32..31 allowed\n", $$); YYERROR; }
if(temp==2) { yyerror("Immediate syntax"); YYERROR; }
}
imm32: IMM {
temp = check_imm($1, &$$, 0x1000000, 0x7fffffff);
if(temp==1) { printf("Immediate Value %d out of range: -32b..31b allowed\n", $$); YYERROR; }
if(temp==2) { yyerror("Immediate syntax"); YYERROR; }
}
%%
Go to most recent revision | Compare with Previous | Blame | View Log