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|
%{
/*
* UPEM / Compilation / Projet
* Pacien TRAN-GIRARD, Adam NAILI
*
*
*
*
*
*
* TODO :
* - Gérer les globales avec .bss (Il faut donc décaler le début du programme après l'analyse des globales pour savoir combien de place réserver.)
* - Evaluation paresseuse
* - Gestion des tableaux
*
*
*
*/
#include <stdio.h>
#include "symboltable.h"
extern int lineno;
int yylex();
void yyerror(char *);
#define GLOBAL 0
#define LOCAL 1
static int status = GLOBAL;
%}
%union {
char caractere;
int num;
char ident[64];
int type;
char comp[3];
char addsub;
char divstar;
}
%token <caractere> CARACTERE
%token <num> NUM
%token <ident> IDENT
%token <comp> ORDER EQ
%token <addsub> ADDSUB
%token <divstar> DIVSTAR
%token OR AND CONST IF ELSE WHILE RETURN VOID PRINT READC READE
%token <type> TYPE
%type <num> Exp EB TB FB M E T F
%type <ident> LValue
%left ','
%precedence ')'
%precedence ELSE
%%
Prog:{printf("extern printf\n");
printf("section .data\n");
printf("format_int db \"%%d\",10,0\n\n");
printf("section .bss\nsection .text\n\nglobal _start\n");
printf("print: ;print needs an argument in rax\n");
printf("push rbp\n");
printf("mov rbp, rsp\n");
printf("push rsi\n");
printf("mov rsi, rax\n");
printf("mov rdi, format_int\n");
printf("mov rax, 0\n");
printf("call printf WRT ..plt\n");
printf("pop rsi\n");
printf("pop rbp\n");
printf("ret\n");
printf("\n_start:\n");
printf("push rbp\nmov rbp, rsp\n\n");
}
DeclConsts DeclVars DeclFoncts
{
printf("mov rax,60 \n");
printf("mov rdi,0 \n");
printf("syscall \n");
printf(";global table\n");
glo_display_table();
printf(";local table\n");
loc_display_table();
}
;
DeclConsts:
DeclConsts CONST ListConst ';'
|
;
ListConst:
ListConst ',' IDENT '=' Litteral
| IDENT '=' Litteral
;
Litteral:
NombreSigne
| CARACTERE
;
NombreSigne:
NUM
| ADDSUB NUM
;
DeclVars:
DeclVars TYPE Declarateurs ';'
|
;
Declarateurs:
Declarateurs ',' Declarateur {if(status == GLOBAL) glo_addVar($<ident>3, $<type>0);
else loc_addVar($<ident>3, $<type>0);
printf("push 0\n");}
| Declarateur {if(status == GLOBAL) glo_addVar($<ident>1, $<type>0);
else loc_addVar($<ident>1, $<type>0);
printf("push 0\n");}
;
Declarateur:
IDENT
| IDENT '[' NUM ']'
;
DeclFoncts:
DeclFoncts DeclFonct
| DeclFonct
;
DeclFonct:
EnTeteFonct {status = LOCAL;} Corps {status = GLOBAL;}
;
EnTeteFonct:
TYPE IDENT '(' Parametres ')'
| VOID IDENT '(' Parametres ')'
;
Parametres:
VOID
| ListTypVar
;
ListTypVar:
ListTypVar ',' TYPE IDENT {if(status == GLOBAL) glo_addVar($<ident>4, $<type>3);
else loc_addVar($<ident>4, $<type>3);
printf("push 0\n");}
| TYPE IDENT {if(status == GLOBAL) glo_addVar($<ident>2, $<type>1);
else loc_addVar($<ident>2, $<type>1);
printf("push 0\n");}
;
Corps:
'{' DeclConsts DeclVars SuiteInstr '}'
;
SuiteInstr:
SuiteInstr Instr
| ;
Instr:
Exp ';'
| ';'
| RETURN Exp ';'
| RETURN ';'
| READE '(' IDENT ')' ';' {if(status == GLOBAL) glo_lookup($<ident>3);
else loc_lookup($<ident>3);}
| READC '(' IDENT ')' ';' {if(status == GLOBAL) glo_lookup($<ident>3);
else loc_lookup($<ident>3);}
| PRINT '(' Exp ')' ';' {printf("pop rax\ncall print\n");}
| IF '(' Exp ')' Instr
| IF '(' Exp ')' Instr ELSE Instr
| WHILE '(' Exp ')' Instr
| '{' SuiteInstr '}'
;
Exp:
LValue '=' Exp {if(status == GLOBAL){
$$ = glo_lookup($<ident>1);
printf("pop QWORD [rbp - %d] ;%s\n",glo_get_addr($<ident>1),$<ident>1);
}
else {
$$ = loc_lookup($<ident>1);
printf("pop QWORD [rbp - %d] ;%s\n",loc_get_addr($<ident>1),$<ident>1);
}
}
| EB
;
EB:
EB {check_expected_type($1,INT); printf("pop rax\n");}
OR TB {check_expected_type($4,INT);}
| TB
;
TB:
TB AND FB {check_expected_type($1,INT);check_expected_type($3,INT);}
| FB
;
FB:
FB EQ M {check_expected_type($1,INT);check_expected_type($3,INT);}
| M
;
M:
M ORDER E {check_expected_type($1,INT);check_expected_type($3,INT);}
| E
;
E:
E ADDSUB T {check_expected_type($1,INT);check_expected_type($3,INT);
if($2 == '+'){
printf(";E + T\npop rcx\npop rax\nadd rax,rcx\npush rax\n");
}
else{
printf(";E - T\npop rcx\npop rax\nsub rax,rcx\npush rax\n");
}
}
| T
;
T:
T DIVSTAR F {check_expected_type($1,INT);check_expected_type($3,INT);
if($2 == '*'){
printf(";E * T\npop rax\npop rcx\nimul rax,rcx\npush rax\n");
}
else{
printf(";E / T\npop rax\npop rcx\nxor rdx,rdx\nidiv rcx\n");
if ($2 == '/'){
printf("push rax\n");
}
else{
printf("push rdx\n");
}
}
}
| F
;
F:
ADDSUB F {$$ = $2;//on fait remonter le type
if($1 == '+') {
printf(";+F\n");
}
else{
printf(";-F\npop rdx\nxor rax,rax\nsub rax,rdx\npush rax\n");
}
}
| '!' F {$$ = $2;printf(";!F\npop rax\nxor rax,1\npush rax\n");}
| '(' Exp ')' {$$ = $2;}
| LValue {if(status == GLOBAL) {$$ = glo_lookup($<ident>1);printf("push QWORD [rbp - %d] ;%s\n",glo_get_addr($<ident>1),$<ident>1);}
else {$$ = loc_lookup($<ident>1); printf("push QWORD [rbp - %d] ;%s\n",loc_get_addr($<ident>1),$<ident>1);}}
| NUM {$$ = INT; if(status == LOCAL) printf("push %d\n",$1);} // on stocke les types pour l'analyse sémantique
| CARACTERE {$$ = CHAR; if(status == LOCAL) printf("push %d\n",$1);}
| IDENT '(' Arguments ')' {$$ = INT;} //tableau d'entiers uniquement
;
LValue:
IDENT {if(status == GLOBAL) {glo_lookup($<ident>1);}
else {loc_lookup($<ident>1);}}
| IDENT '[' Exp ']' {if(status == GLOBAL) {glo_lookup($<ident>1);}
else {loc_lookup($<ident>1);}}
;
Arguments:
ListExp
|
;
ListExp:
ListExp ',' Exp
| Exp
;
%%
void yyerror(char *msg){
fprintf(stderr, "%s at line %d\n", msg, lineno);
}
int main(int argc, char **argv) {
return yyparse();
}
|