#include "c.h"
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#include "c.h"
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static char rcsid[] = "$Id: decl.c,v 1.1 2002/08/28 23:12:42 drh Exp $";
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static char rcsid[] = "$Id: decl.c,v 1.1 2002/08/28 23:12:42 drh Exp $";
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#define add(x,n) (x > inttype->u.sym->u.limits.max.i-(n) ? (overflow=1,x) : x+(n))
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#define add(x,n) (x > inttype->u.sym->u.limits.max.i-(n) ? (overflow=1,x) : x+(n))
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#define chkoverflow(x,n) ((void)add(x,n))
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#define chkoverflow(x,n) ((void)add(x,n))
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#define bits2bytes(n) (((n) + 7)/8)
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#define bits2bytes(n) (((n) + 7)/8)
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static int regcount;
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static int regcount;
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static List autos, registers;
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static List autos, registers;
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Symbol cfunc; /* current function */
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Symbol cfunc; /* current function */
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Symbol retv; /* return value location for structs */
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Symbol retv; /* return value location for structs */
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static void checkref(Symbol, void *);
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static void checkref(Symbol, void *);
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static Symbol dclglobal(int, char *, Type, Coordinate *);
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static Symbol dclglobal(int, char *, Type, Coordinate *);
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static Symbol dcllocal(int, char *, Type, Coordinate *);
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static Symbol dcllocal(int, char *, Type, Coordinate *);
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static Symbol dclparam(int, char *, Type, Coordinate *);
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static Symbol dclparam(int, char *, Type, Coordinate *);
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static Type dclr(Type, char **, Symbol **, int);
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static Type dclr(Type, char **, Symbol **, int);
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static Type dclr1(char **, Symbol **, int);
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static Type dclr1(char **, Symbol **, int);
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static void decl(Symbol (*)(int, char *, Type, Coordinate *));
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static void decl(Symbol (*)(int, char *, Type, Coordinate *));
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extern void doconst(Symbol, void *);
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extern void doconst(Symbol, void *);
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static void doglobal(Symbol, void *);
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static void doglobal(Symbol, void *);
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static void doextern(Symbol, void *);
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static void doextern(Symbol, void *);
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static void exitparams(Symbol []);
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static void exitparams(Symbol []);
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static void fields(Type);
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static void fields(Type);
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static void funcdefn(int, char *, Type, Symbol [], Coordinate);
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static void funcdefn(int, char *, Type, Symbol [], Coordinate);
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static void initglobal(Symbol, int);
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static void initglobal(Symbol, int);
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static void oldparam(Symbol, void *);
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static void oldparam(Symbol, void *);
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static Symbol *parameters(Type);
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static Symbol *parameters(Type);
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static Type specifier(int *);
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static Type specifier(int *);
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static Type structdcl(int);
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static Type structdcl(int);
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static Type tnode(int, Type);
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static Type tnode(int, Type);
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void program(void) {
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void program(void) {
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int n;
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int n;
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level = GLOBAL;
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level = GLOBAL;
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for (n = 0; t != EOI; n++)
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for (n = 0; t != EOI; n++)
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if (kind[t] == CHAR || kind[t] == STATIC
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if (kind[t] == CHAR || kind[t] == STATIC
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|| t == ID || t == '*' || t == '(') {
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|| t == ID || t == '*' || t == '(') {
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decl(dclglobal);
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decl(dclglobal);
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deallocate(STMT);
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deallocate(STMT);
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if (!(glevel >= 3 || xref))
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if (!(glevel >= 3 || xref))
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deallocate(FUNC);
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deallocate(FUNC);
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} else if (t == ';') {
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} else if (t == ';') {
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warning("empty declaration\n");
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warning("empty declaration\n");
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t = gettok();
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t = gettok();
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} else {
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} else {
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error("unrecognized declaration\n");
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error("unrecognized declaration\n");
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t = gettok();
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t = gettok();
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}
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}
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if (n == 0)
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if (n == 0)
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warning("empty input file\n");
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warning("empty input file\n");
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}
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}
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static Type specifier(int *sclass) {
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static Type specifier(int *sclass) {
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int cls, cons, sign, size, type, vol;
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int cls, cons, sign, size, type, vol;
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Type ty = NULL;
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Type ty = NULL;
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cls = vol = cons = sign = size = type = 0;
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cls = vol = cons = sign = size = type = 0;
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if (sclass == NULL)
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if (sclass == NULL)
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cls = AUTO;
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cls = AUTO;
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for (;;) {
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for (;;) {
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int *p, tt = t;
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int *p, tt = t;
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switch (t) {
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switch (t) {
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case AUTO:
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case AUTO:
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case REGISTER: if (level <= GLOBAL && cls == 0)
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case REGISTER: if (level <= GLOBAL && cls == 0)
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error("invalid use of `%k'\n", t);
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error("invalid use of `%k'\n", t);
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p = &cls; t = gettok(); break;
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p = &cls; t = gettok(); break;
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case STATIC: case EXTERN:
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case STATIC: case EXTERN:
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case TYPEDEF: p = &cls; t = gettok(); break;
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case TYPEDEF: p = &cls; t = gettok(); break;
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case CONST: p = &cons; t = gettok(); break;
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case CONST: p = &cons; t = gettok(); break;
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case VOLATILE: p = &vol; t = gettok(); break;
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case VOLATILE: p = &vol; t = gettok(); break;
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case SIGNED:
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case SIGNED:
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case UNSIGNED: p = &sign; t = gettok(); break;
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case UNSIGNED: p = &sign; t = gettok(); break;
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case LONG: if (size == LONG) {
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case LONG: if (size == LONG) {
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size = 0;
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size = 0;
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tt = LONG+LONG;
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tt = LONG+LONG;
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}
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}
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p = &size; t = gettok(); break;
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p = &size; t = gettok(); break;
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case SHORT: p = &size; t = gettok(); break;
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case SHORT: p = &size; t = gettok(); break;
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case VOID: case CHAR: case INT: case FLOAT:
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case VOID: case CHAR: case INT: case FLOAT:
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case DOUBLE: p = &type; ty = tsym->type;
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case DOUBLE: p = &type; ty = tsym->type;
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t = gettok(); break;
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t = gettok(); break;
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case ENUM: p = &type; ty = enumdcl(); break;
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case ENUM: p = &type; ty = enumdcl(); break;
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case STRUCT:
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case STRUCT:
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case UNION: p = &type; ty = structdcl(t); break;
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case UNION: p = &type; ty = structdcl(t); break;
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case ID:
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case ID:
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if (istypename(t, tsym) && type == 0
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if (istypename(t, tsym) && type == 0
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&& sign == 0 && size == 0) {
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&& sign == 0 && size == 0) {
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use(tsym, src);
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use(tsym, src);
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ty = tsym->type;
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ty = tsym->type;
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if (isqual(ty)
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if (isqual(ty)
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&& ty->size != ty->type->size) {
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&& ty->size != ty->type->size) {
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ty = unqual(ty);
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ty = unqual(ty);
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if (isconst(tsym->type))
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if (isconst(tsym->type))
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ty = qual(CONST, ty);
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ty = qual(CONST, ty);
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if (isvolatile(tsym->type))
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if (isvolatile(tsym->type))
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ty = qual(VOLATILE, ty);
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ty = qual(VOLATILE, ty);
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tsym->type = ty;
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tsym->type = ty;
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}
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}
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p = &type;
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p = &type;
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t = gettok();
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t = gettok();
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} else
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} else
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p = NULL;
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p = NULL;
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break;
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break;
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default: p = NULL;
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default: p = NULL;
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}
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}
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if (p == NULL)
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if (p == NULL)
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break;
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break;
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if (*p)
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if (*p)
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error("invalid use of `%k'\n", tt);
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error("invalid use of `%k'\n", tt);
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*p = tt;
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*p = tt;
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}
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}
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if (sclass)
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if (sclass)
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*sclass = cls;
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*sclass = cls;
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if (type == 0) {
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if (type == 0) {
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type = INT;
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type = INT;
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ty = inttype;
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ty = inttype;
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}
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}
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if (size == SHORT && type != INT
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if (size == SHORT && type != INT
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|| size == LONG+LONG && type != INT
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|| size == LONG+LONG && type != INT
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|| size == LONG && type != INT && type != DOUBLE
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|| size == LONG && type != INT && type != DOUBLE
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|| sign && type != INT && type != CHAR)
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|| sign && type != INT && type != CHAR)
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error("invalid type specification\n");
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error("invalid type specification\n");
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if (type == CHAR && sign)
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if (type == CHAR && sign)
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ty = sign == UNSIGNED ? unsignedchar : signedchar;
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ty = sign == UNSIGNED ? unsignedchar : signedchar;
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else if (size == SHORT)
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else if (size == SHORT)
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ty = sign == UNSIGNED ? unsignedshort : shorttype;
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ty = sign == UNSIGNED ? unsignedshort : shorttype;
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else if (size == LONG && type == DOUBLE)
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else if (size == LONG && type == DOUBLE)
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ty = longdouble;
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ty = longdouble;
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else if (size == LONG+LONG) {
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else if (size == LONG+LONG) {
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ty = sign == UNSIGNED ? unsignedlonglong : longlong;
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ty = sign == UNSIGNED ? unsignedlonglong : longlong;
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if (Aflag >= 1)
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if (Aflag >= 1)
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warning("`%t' is a non-ANSI type\n", ty);
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warning("`%t' is a non-ANSI type\n", ty);
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} else if (size == LONG)
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} else if (size == LONG)
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ty = sign == UNSIGNED ? unsignedlong : longtype;
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ty = sign == UNSIGNED ? unsignedlong : longtype;
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else if (sign == UNSIGNED && type == INT)
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else if (sign == UNSIGNED && type == INT)
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ty = unsignedtype;
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ty = unsignedtype;
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if (cons == CONST)
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if (cons == CONST)
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ty = qual(CONST, ty);
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ty = qual(CONST, ty);
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if (vol == VOLATILE)
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if (vol == VOLATILE)
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ty = qual(VOLATILE, ty);
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ty = qual(VOLATILE, ty);
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return ty;
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return ty;
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}
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}
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static void decl(Symbol (*dcl)(int, char *, Type, Coordinate *)) {
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static void decl(Symbol (*dcl)(int, char *, Type, Coordinate *)) {
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int sclass;
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int sclass;
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Type ty, ty1;
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Type ty, ty1;
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static char stop[] = { CHAR, STATIC, ID, 0 };
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static char stop[] = { CHAR, STATIC, ID, 0 };
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ty = specifier(&sclass);
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ty = specifier(&sclass);
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if (t == ID || t == '*' || t == '(' || t == '[') {
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if (t == ID || t == '*' || t == '(' || t == '[') {
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char *id;
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char *id;
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Coordinate pos;
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Coordinate pos;
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id = NULL;
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id = NULL;
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pos = src;
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pos = src;
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if (level == GLOBAL) {
|
if (level == GLOBAL) {
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Symbol *params = NULL;
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Symbol *params = NULL;
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ty1 = dclr(ty, &id, ¶ms, 0);
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ty1 = dclr(ty, &id, ¶ms, 0);
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if (params && id && isfunc(ty1)
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if (params && id && isfunc(ty1)
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&& (t == '{' || istypename(t, tsym)
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&& (t == '{' || istypename(t, tsym)
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|| (kind[t] == STATIC && t != TYPEDEF))) {
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|| (kind[t] == STATIC && t != TYPEDEF))) {
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if (sclass == TYPEDEF) {
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if (sclass == TYPEDEF) {
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error("invalid use of `typedef'\n");
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error("invalid use of `typedef'\n");
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sclass = EXTERN;
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sclass = EXTERN;
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}
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}
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if (ty1->u.f.oldstyle)
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if (ty1->u.f.oldstyle)
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exitscope();
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exitscope();
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funcdefn(sclass, id, ty1, params, pos);
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funcdefn(sclass, id, ty1, params, pos);
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return;
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return;
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} else if (params)
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} else if (params)
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exitparams(params);
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exitparams(params);
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} else
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} else
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ty1 = dclr(ty, &id, NULL, 0);
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ty1 = dclr(ty, &id, NULL, 0);
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for (;;) {
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for (;;) {
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if (Aflag >= 1 && !hasproto(ty1))
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if (Aflag >= 1 && !hasproto(ty1))
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warning("missing prototype\n");
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warning("missing prototype\n");
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if (id == NULL)
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if (id == NULL)
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error("missing identifier\n");
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error("missing identifier\n");
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else if (sclass == TYPEDEF)
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else if (sclass == TYPEDEF)
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{
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{
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Symbol p = lookup(id, identifiers);
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Symbol p = lookup(id, identifiers);
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if (p && p->scope == level)
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if (p && p->scope == level)
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error("redeclaration of `%s'\n", id);
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error("redeclaration of `%s'\n", id);
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p = install(id, &identifiers, level,
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p = install(id, &identifiers, level,
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level < LOCAL ? PERM : FUNC);
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level < LOCAL ? PERM : FUNC);
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p->type = ty1;
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p->type = ty1;
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p->sclass = TYPEDEF;
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p->sclass = TYPEDEF;
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p->src = pos;
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p->src = pos;
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}
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}
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else
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else
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(void)(*dcl)(sclass, id, ty1, &pos);
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(void)(*dcl)(sclass, id, ty1, &pos);
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if (t != ',')
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if (t != ',')
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break;
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break;
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t = gettok();
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t = gettok();
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id = NULL;
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id = NULL;
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pos = src;
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pos = src;
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ty1 = dclr(ty, &id, NULL, 0);
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ty1 = dclr(ty, &id, NULL, 0);
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}
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}
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} else if (ty == NULL
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} else if (ty == NULL
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|| !(isenum(ty) ||
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|| !(isenum(ty) ||
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isstruct(ty) && (*unqual(ty)->u.sym->name < '1' || *unqual(ty)->u.sym->name > '9')))
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isstruct(ty) && (*unqual(ty)->u.sym->name < '1' || *unqual(ty)->u.sym->name > '9')))
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error("empty declaration\n");
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error("empty declaration\n");
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test(';', stop);
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test(';', stop);
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}
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}
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static Symbol dclglobal(int sclass, char *id, Type ty, Coordinate *pos) {
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static Symbol dclglobal(int sclass, char *id, Type ty, Coordinate *pos) {
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Symbol p;
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Symbol p;
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|
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if (sclass == 0)
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if (sclass == 0)
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sclass = AUTO;
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sclass = AUTO;
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else if (sclass != EXTERN && sclass != STATIC) {
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else if (sclass != EXTERN && sclass != STATIC) {
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error("invalid storage class `%k' for `%t %s'\n",
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error("invalid storage class `%k' for `%t %s'\n",
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sclass, ty, id);
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sclass, ty, id);
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sclass = AUTO;
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sclass = AUTO;
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}
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}
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p = lookup(id, identifiers);
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p = lookup(id, identifiers);
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if (p && p->scope == GLOBAL) {
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if (p && p->scope == GLOBAL) {
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if (p->sclass != TYPEDEF && eqtype(ty, p->type, 1))
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if (p->sclass != TYPEDEF && eqtype(ty, p->type, 1))
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ty = compose(ty, p->type);
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ty = compose(ty, p->type);
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else
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else
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error("redeclaration of `%s' previously declared at %w\n", p->name, &p->src);
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error("redeclaration of `%s' previously declared at %w\n", p->name, &p->src);
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|
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if (!isfunc(ty) && p->defined && t == '=')
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if (!isfunc(ty) && p->defined && t == '=')
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error("redefinition of `%s' previously defined at %w\n", p->name, &p->src);
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error("redefinition of `%s' previously defined at %w\n", p->name, &p->src);
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|
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if (p->sclass == EXTERN && sclass == STATIC
|
if (p->sclass == EXTERN && sclass == STATIC
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|| p->sclass == STATIC && sclass == AUTO
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|| p->sclass == STATIC && sclass == AUTO
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|| p->sclass == AUTO && sclass == STATIC)
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|| p->sclass == AUTO && sclass == STATIC)
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warning("inconsistent linkage for `%s' previously declared at %w\n", p->name, &p->src);
|
warning("inconsistent linkage for `%s' previously declared at %w\n", p->name, &p->src);
|
|
|
}
|
}
|
if (p == NULL || p->scope != GLOBAL) {
|
if (p == NULL || p->scope != GLOBAL) {
|
Symbol q = lookup(id, externals);
|
Symbol q = lookup(id, externals);
|
if (q) {
|
if (q) {
|
if (sclass == STATIC || !eqtype(ty, q->type, 1))
|
if (sclass == STATIC || !eqtype(ty, q->type, 1))
|
warning("declaration of `%s' does not match previous declaration at %w\n", id, &q->src);
|
warning("declaration of `%s' does not match previous declaration at %w\n", id, &q->src);
|
|
|
p = relocate(id, externals, globals);
|
p = relocate(id, externals, globals);
|
p->sclass = sclass;
|
p->sclass = sclass;
|
} else {
|
} else {
|
p = install(id, &globals, GLOBAL, PERM);
|
p = install(id, &globals, GLOBAL, PERM);
|
p->sclass = sclass;
|
p->sclass = sclass;
|
(*IR->defsymbol)(p);
|
(*IR->defsymbol)(p);
|
}
|
}
|
if (p->sclass != STATIC) {
|
if (p->sclass != STATIC) {
|
static int nglobals;
|
static int nglobals;
|
nglobals++;
|
nglobals++;
|
if (Aflag >= 2 && nglobals == 512)
|
if (Aflag >= 2 && nglobals == 512)
|
warning("more than 511 external identifiers\n");
|
warning("more than 511 external identifiers\n");
|
}
|
}
|
} else if (p->sclass == EXTERN)
|
} else if (p->sclass == EXTERN)
|
p->sclass = sclass;
|
p->sclass = sclass;
|
p->type = ty;
|
p->type = ty;
|
p->src = *pos;
|
p->src = *pos;
|
if (t == '=' && isfunc(p->type)) {
|
if (t == '=' && isfunc(p->type)) {
|
error("illegal initialization for `%s'\n", p->name);
|
error("illegal initialization for `%s'\n", p->name);
|
t = gettok();
|
t = gettok();
|
initializer(p->type, 0);
|
initializer(p->type, 0);
|
} else if (t == '=') {
|
} else if (t == '=') {
|
initglobal(p, 0);
|
initglobal(p, 0);
|
if (glevel > 0 && IR->stabsym) {
|
if (glevel > 0 && IR->stabsym) {
|
(*IR->stabsym)(p); swtoseg(p->u.seg); }
|
(*IR->stabsym)(p); swtoseg(p->u.seg); }
|
} else if (p->sclass == STATIC && !isfunc(p->type)
|
} else if (p->sclass == STATIC && !isfunc(p->type)
|
&& p->type->size == 0)
|
&& p->type->size == 0)
|
error("undefined size for `%t %s'\n", p->type, p->name);
|
error("undefined size for `%t %s'\n", p->type, p->name);
|
return p;
|
return p;
|
}
|
}
|
static void initglobal(Symbol p, int flag) {
|
static void initglobal(Symbol p, int flag) {
|
Type ty;
|
Type ty;
|
|
|
if (t == '=' || flag) {
|
if (t == '=' || flag) {
|
if (p->sclass == STATIC) {
|
if (p->sclass == STATIC) {
|
for (ty = p->type; isarray(ty); ty = ty->type)
|
for (ty = p->type; isarray(ty); ty = ty->type)
|
;
|
;
|
defglobal(p, isconst(ty) ? LIT : DATA);
|
defglobal(p, isconst(ty) ? LIT : DATA);
|
} else
|
} else
|
defglobal(p, DATA);
|
defglobal(p, DATA);
|
if (t == '=')
|
if (t == '=')
|
t = gettok();
|
t = gettok();
|
ty = initializer(p->type, 0);
|
ty = initializer(p->type, 0);
|
if (isarray(p->type) && p->type->size == 0)
|
if (isarray(p->type) && p->type->size == 0)
|
p->type = ty;
|
p->type = ty;
|
if (p->sclass == EXTERN)
|
if (p->sclass == EXTERN)
|
p->sclass = AUTO;
|
p->sclass = AUTO;
|
}
|
}
|
}
|
}
|
void defglobal(Symbol p, int seg) {
|
void defglobal(Symbol p, int seg) {
|
p->u.seg = seg;
|
p->u.seg = seg;
|
swtoseg(p->u.seg);
|
swtoseg(p->u.seg);
|
if (p->sclass != STATIC)
|
if (p->sclass != STATIC)
|
(*IR->export)(p);
|
(*IR->export)(p);
|
(*IR->global)(p);
|
(*IR->global)(p);
|
p->defined = 1;
|
p->defined = 1;
|
}
|
}
|
|
|
static Type dclr(Type basety, char **id, Symbol **params, int abstract) {
|
static Type dclr(Type basety, char **id, Symbol **params, int abstract) {
|
Type ty = dclr1(id, params, abstract);
|
Type ty = dclr1(id, params, abstract);
|
|
|
for ( ; ty; ty = ty->type)
|
for ( ; ty; ty = ty->type)
|
switch (ty->op) {
|
switch (ty->op) {
|
case POINTER:
|
case POINTER:
|
basety = ptr(basety);
|
basety = ptr(basety);
|
break;
|
break;
|
case FUNCTION:
|
case FUNCTION:
|
basety = func(basety, ty->u.f.proto,
|
basety = func(basety, ty->u.f.proto,
|
ty->u.f.oldstyle);
|
ty->u.f.oldstyle);
|
break;
|
break;
|
case ARRAY:
|
case ARRAY:
|
basety = array(basety, ty->size, 0);
|
basety = array(basety, ty->size, 0);
|
break;
|
break;
|
case CONST: case VOLATILE:
|
case CONST: case VOLATILE:
|
basety = qual(ty->op, basety);
|
basety = qual(ty->op, basety);
|
break;
|
break;
|
default: assert(0);
|
default: assert(0);
|
}
|
}
|
if (Aflag >= 2 && basety->size > 32767)
|
if (Aflag >= 2 && basety->size > 32767)
|
warning("more than 32767 bytes in `%t'\n", basety);
|
warning("more than 32767 bytes in `%t'\n", basety);
|
return basety;
|
return basety;
|
}
|
}
|
static Type tnode(int op, Type type) {
|
static Type tnode(int op, Type type) {
|
Type ty;
|
Type ty;
|
|
|
NEW0(ty, STMT);
|
NEW0(ty, STMT);
|
ty->op = op;
|
ty->op = op;
|
ty->type = type;
|
ty->type = type;
|
return ty;
|
return ty;
|
}
|
}
|
static Type dclr1(char **id, Symbol **params, int abstract) {
|
static Type dclr1(char **id, Symbol **params, int abstract) {
|
Type ty = NULL;
|
Type ty = NULL;
|
|
|
switch (t) {
|
switch (t) {
|
case ID: if (id)
|
case ID: if (id)
|
*id = token;
|
*id = token;
|
else
|
else
|
error("extraneous identifier `%s'\n", token);
|
error("extraneous identifier `%s'\n", token);
|
t = gettok(); break;
|
t = gettok(); break;
|
case '*': t = gettok(); if (t == CONST || t == VOLATILE) {
|
case '*': t = gettok(); if (t == CONST || t == VOLATILE) {
|
Type ty1;
|
Type ty1;
|
ty1 = ty = tnode(t, NULL);
|
ty1 = ty = tnode(t, NULL);
|
while ((t = gettok()) == CONST || t == VOLATILE)
|
while ((t = gettok()) == CONST || t == VOLATILE)
|
ty1 = tnode(t, ty1);
|
ty1 = tnode(t, ty1);
|
ty->type = dclr1(id, params, abstract);
|
ty->type = dclr1(id, params, abstract);
|
ty = ty1;
|
ty = ty1;
|
} else
|
} else
|
ty = dclr1(id, params, abstract);
|
ty = dclr1(id, params, abstract);
|
ty = tnode(POINTER, ty); break;
|
ty = tnode(POINTER, ty); break;
|
case '(': t = gettok(); if (abstract
|
case '(': t = gettok(); if (abstract
|
&& (t == REGISTER || istypename(t, tsym) || t == ')')) {
|
&& (t == REGISTER || istypename(t, tsym) || t == ')')) {
|
Symbol *args;
|
Symbol *args;
|
ty = tnode(FUNCTION, ty);
|
ty = tnode(FUNCTION, ty);
|
enterscope();
|
enterscope();
|
if (level > PARAM)
|
if (level > PARAM)
|
enterscope();
|
enterscope();
|
args = parameters(ty);
|
args = parameters(ty);
|
exitparams(args);
|
exitparams(args);
|
} else {
|
} else {
|
ty = dclr1(id, params, abstract);
|
ty = dclr1(id, params, abstract);
|
expect(')');
|
expect(')');
|
if (abstract && ty == NULL
|
if (abstract && ty == NULL
|
&& (id == NULL || *id == NULL))
|
&& (id == NULL || *id == NULL))
|
return tnode(FUNCTION, NULL);
|
return tnode(FUNCTION, NULL);
|
} break;
|
} break;
|
case '[': break;
|
case '[': break;
|
default: return ty;
|
default: return ty;
|
}
|
}
|
while (t == '(' || t == '[')
|
while (t == '(' || t == '[')
|
switch (t) {
|
switch (t) {
|
case '(': t = gettok(); { Symbol *args;
|
case '(': t = gettok(); { Symbol *args;
|
ty = tnode(FUNCTION, ty);
|
ty = tnode(FUNCTION, ty);
|
enterscope();
|
enterscope();
|
if (level > PARAM)
|
if (level > PARAM)
|
enterscope();
|
enterscope();
|
args = parameters(ty);
|
args = parameters(ty);
|
if (params && *params == NULL)
|
if (params && *params == NULL)
|
*params = args;
|
*params = args;
|
else
|
else
|
exitparams(args);
|
exitparams(args);
|
}
|
}
|
break;
|
break;
|
case '[': t = gettok(); { int n = 0;
|
case '[': t = gettok(); { int n = 0;
|
if (kind[t] == ID) {
|
if (kind[t] == ID) {
|
n = intexpr(']', 1);
|
n = intexpr(']', 1);
|
if (n <= 0) {
|
if (n <= 0) {
|
error("`%d' is an illegal array size\n", n);
|
error("`%d' is an illegal array size\n", n);
|
n = 1;
|
n = 1;
|
}
|
}
|
} else
|
} else
|
expect(']');
|
expect(']');
|
ty = tnode(ARRAY, ty);
|
ty = tnode(ARRAY, ty);
|
ty->size = n; } break;
|
ty->size = n; } break;
|
default: assert(0);
|
default: assert(0);
|
}
|
}
|
return ty;
|
return ty;
|
}
|
}
|
static Symbol *parameters(Type fty) {
|
static Symbol *parameters(Type fty) {
|
List list = NULL;
|
List list = NULL;
|
Symbol *params;
|
Symbol *params;
|
|
|
if (kind[t] == STATIC || istypename(t, tsym)) {
|
if (kind[t] == STATIC || istypename(t, tsym)) {
|
int n = 0;
|
int n = 0;
|
Type ty1 = NULL;
|
Type ty1 = NULL;
|
for (;;) {
|
for (;;) {
|
Type ty;
|
Type ty;
|
int sclass = 0;
|
int sclass = 0;
|
char *id = NULL;
|
char *id = NULL;
|
if (ty1 && t == ELLIPSIS) {
|
if (ty1 && t == ELLIPSIS) {
|
static struct symbol sentinel;
|
static struct symbol sentinel;
|
if (sentinel.type == NULL) {
|
if (sentinel.type == NULL) {
|
sentinel.type = voidtype;
|
sentinel.type = voidtype;
|
sentinel.defined = 1;
|
sentinel.defined = 1;
|
}
|
}
|
if (ty1 == voidtype)
|
if (ty1 == voidtype)
|
error("illegal formal parameter types\n");
|
error("illegal formal parameter types\n");
|
list = append(&sentinel, list);
|
list = append(&sentinel, list);
|
t = gettok();
|
t = gettok();
|
break;
|
break;
|
}
|
}
|
if (!istypename(t, tsym) && t != REGISTER)
|
if (!istypename(t, tsym) && t != REGISTER)
|
error("missing parameter type\n");
|
error("missing parameter type\n");
|
n++;
|
n++;
|
ty = dclr(specifier(&sclass), &id, NULL, 1);
|
ty = dclr(specifier(&sclass), &id, NULL, 1);
|
if ( ty == voidtype && (ty1 || id)
|
if ( ty == voidtype && (ty1 || id)
|
|| ty1 == voidtype)
|
|| ty1 == voidtype)
|
error("illegal formal parameter types\n");
|
error("illegal formal parameter types\n");
|
if (id == NULL)
|
if (id == NULL)
|
id = stringd(n);
|
id = stringd(n);
|
if (ty != voidtype)
|
if (ty != voidtype)
|
list = append(dclparam(sclass, id, ty, &src), list);
|
list = append(dclparam(sclass, id, ty, &src), list);
|
if (Aflag >= 1 && !hasproto(ty))
|
if (Aflag >= 1 && !hasproto(ty))
|
warning("missing prototype\n");
|
warning("missing prototype\n");
|
if (ty1 == NULL)
|
if (ty1 == NULL)
|
ty1 = ty;
|
ty1 = ty;
|
if (t != ',')
|
if (t != ',')
|
break;
|
break;
|
t = gettok();
|
t = gettok();
|
}
|
}
|
fty->u.f.proto = newarray(length(list) + 1,
|
fty->u.f.proto = newarray(length(list) + 1,
|
sizeof (Type *), PERM);
|
sizeof (Type *), PERM);
|
params = ltov(&list, FUNC);
|
params = ltov(&list, FUNC);
|
for (n = 0; params[n]; n++)
|
for (n = 0; params[n]; n++)
|
fty->u.f.proto[n] = params[n]->type;
|
fty->u.f.proto[n] = params[n]->type;
|
fty->u.f.proto[n] = NULL;
|
fty->u.f.proto[n] = NULL;
|
fty->u.f.oldstyle = 0;
|
fty->u.f.oldstyle = 0;
|
} else {
|
} else {
|
if (t == ID)
|
if (t == ID)
|
for (;;) {
|
for (;;) {
|
Symbol p;
|
Symbol p;
|
if (t != ID) {
|
if (t != ID) {
|
error("expecting an identifier\n");
|
error("expecting an identifier\n");
|
break;
|
break;
|
}
|
}
|
p = dclparam(0, token, inttype, &src);
|
p = dclparam(0, token, inttype, &src);
|
p->defined = 0;
|
p->defined = 0;
|
list = append(p, list);
|
list = append(p, list);
|
t = gettok();
|
t = gettok();
|
if (t != ',')
|
if (t != ',')
|
break;
|
break;
|
t = gettok();
|
t = gettok();
|
}
|
}
|
params = ltov(&list, FUNC);
|
params = ltov(&list, FUNC);
|
fty->u.f.proto = NULL;
|
fty->u.f.proto = NULL;
|
fty->u.f.oldstyle = 1;
|
fty->u.f.oldstyle = 1;
|
}
|
}
|
if (t != ')') {
|
if (t != ')') {
|
static char stop[] = { CHAR, STATIC, IF, ')', 0 };
|
static char stop[] = { CHAR, STATIC, IF, ')', 0 };
|
expect(')');
|
expect(')');
|
skipto('{', stop);
|
skipto('{', stop);
|
}
|
}
|
if (t == ')')
|
if (t == ')')
|
t = gettok();
|
t = gettok();
|
return params;
|
return params;
|
}
|
}
|
static void exitparams(Symbol params[]) {
|
static void exitparams(Symbol params[]) {
|
assert(params);
|
assert(params);
|
if (params[0] && !params[0]->defined)
|
if (params[0] && !params[0]->defined)
|
error("extraneous old-style parameter list\n");
|
error("extraneous old-style parameter list\n");
|
if (level > PARAM)
|
if (level > PARAM)
|
exitscope();
|
exitscope();
|
exitscope();
|
exitscope();
|
}
|
}
|
|
|
static Symbol dclparam(int sclass, char *id, Type ty, Coordinate *pos) {
|
static Symbol dclparam(int sclass, char *id, Type ty, Coordinate *pos) {
|
Symbol p;
|
Symbol p;
|
|
|
if (isfunc(ty))
|
if (isfunc(ty))
|
ty = ptr(ty);
|
ty = ptr(ty);
|
else if (isarray(ty))
|
else if (isarray(ty))
|
ty = atop(ty);
|
ty = atop(ty);
|
if (sclass == 0)
|
if (sclass == 0)
|
sclass = AUTO;
|
sclass = AUTO;
|
else if (sclass != REGISTER) {
|
else if (sclass != REGISTER) {
|
error("invalid storage class `%k' for `%t%s\n",
|
error("invalid storage class `%k' for `%t%s\n",
|
sclass, ty, stringf(id ? " %s'" : "' parameter", id));
|
sclass, ty, stringf(id ? " %s'" : "' parameter", id));
|
sclass = AUTO;
|
sclass = AUTO;
|
} else if (isvolatile(ty) || isstruct(ty)) {
|
} else if (isvolatile(ty) || isstruct(ty)) {
|
warning("register declaration ignored for `%t%s\n",
|
warning("register declaration ignored for `%t%s\n",
|
ty, stringf(id ? " %s'" : "' parameter", id));
|
ty, stringf(id ? " %s'" : "' parameter", id));
|
sclass = AUTO;
|
sclass = AUTO;
|
}
|
}
|
|
|
p = lookup(id, identifiers);
|
p = lookup(id, identifiers);
|
if (p && p->scope == level)
|
if (p && p->scope == level)
|
error("duplicate declaration for `%s' previously declared at %w\n", id, &p->src);
|
error("duplicate declaration for `%s' previously declared at %w\n", id, &p->src);
|
|
|
else
|
else
|
p = install(id, &identifiers, level, FUNC);
|
p = install(id, &identifiers, level, FUNC);
|
p->sclass = sclass;
|
p->sclass = sclass;
|
p->src = *pos;
|
p->src = *pos;
|
p->type = ty;
|
p->type = ty;
|
p->defined = 1;
|
p->defined = 1;
|
if (t == '=') {
|
if (t == '=') {
|
error("illegal initialization for parameter `%s'\n", id);
|
error("illegal initialization for parameter `%s'\n", id);
|
t = gettok();
|
t = gettok();
|
(void)expr1(0);
|
(void)expr1(0);
|
}
|
}
|
return p;
|
return p;
|
}
|
}
|
static Type structdcl(int op) {
|
static Type structdcl(int op) {
|
char *tag;
|
char *tag;
|
Type ty;
|
Type ty;
|
Symbol p;
|
Symbol p;
|
Coordinate pos;
|
Coordinate pos;
|
|
|
t = gettok();
|
t = gettok();
|
pos = src;
|
pos = src;
|
if (t == ID) {
|
if (t == ID) {
|
tag = token;
|
tag = token;
|
t = gettok();
|
t = gettok();
|
} else
|
} else
|
tag = "";
|
tag = "";
|
if (t == '{') {
|
if (t == '{') {
|
static char stop[] = { IF, ',', 0 };
|
static char stop[] = { IF, ',', 0 };
|
ty = newstruct(op, tag);
|
ty = newstruct(op, tag);
|
ty->u.sym->src = pos;
|
ty->u.sym->src = pos;
|
ty->u.sym->defined = 1;
|
ty->u.sym->defined = 1;
|
t = gettok();
|
t = gettok();
|
if (istypename(t, tsym))
|
if (istypename(t, tsym))
|
fields(ty);
|
fields(ty);
|
else
|
else
|
error("invalid %k field declarations\n", op);
|
error("invalid %k field declarations\n", op);
|
test('}', stop);
|
test('}', stop);
|
}
|
}
|
else if (*tag && (p = lookup(tag, types)) != NULL
|
else if (*tag && (p = lookup(tag, types)) != NULL
|
&& p->type->op == op) {
|
&& p->type->op == op) {
|
ty = p->type;
|
ty = p->type;
|
if (t == ';' && p->scope < level)
|
if (t == ';' && p->scope < level)
|
ty = newstruct(op, tag);
|
ty = newstruct(op, tag);
|
}
|
}
|
else {
|
else {
|
if (*tag == 0)
|
if (*tag == 0)
|
error("missing %k tag\n", op);
|
error("missing %k tag\n", op);
|
ty = newstruct(op, tag);
|
ty = newstruct(op, tag);
|
}
|
}
|
if (*tag && xref)
|
if (*tag && xref)
|
use(ty->u.sym, pos);
|
use(ty->u.sym, pos);
|
return ty;
|
return ty;
|
}
|
}
|
static void fields(Type ty) {
|
static void fields(Type ty) {
|
{ int n = 0;
|
{ int n = 0;
|
while (istypename(t, tsym)) {
|
while (istypename(t, tsym)) {
|
static char stop[] = { IF, CHAR, '}', 0 };
|
static char stop[] = { IF, CHAR, '}', 0 };
|
Type ty1 = specifier(NULL);
|
Type ty1 = specifier(NULL);
|
for (;;) {
|
for (;;) {
|
Field p;
|
Field p;
|
char *id = NULL;
|
char *id = NULL;
|
Type fty = dclr(ty1, &id, NULL, 0);
|
Type fty = dclr(ty1, &id, NULL, 0);
|
p = newfield(id, ty, fty);
|
p = newfield(id, ty, fty);
|
if (Aflag >= 1 && !hasproto(p->type))
|
if (Aflag >= 1 && !hasproto(p->type))
|
warning("missing prototype\n");
|
warning("missing prototype\n");
|
if (t == ':') {
|
if (t == ':') {
|
if (unqual(p->type) != inttype
|
if (unqual(p->type) != inttype
|
&& unqual(p->type) != unsignedtype) {
|
&& unqual(p->type) != unsignedtype) {
|
error("`%t' is an illegal bit-field type\n",
|
error("`%t' is an illegal bit-field type\n",
|
p->type);
|
p->type);
|
p->type = inttype;
|
p->type = inttype;
|
}
|
}
|
t = gettok();
|
t = gettok();
|
p->bitsize = intexpr(0, 0);
|
p->bitsize = intexpr(0, 0);
|
if (p->bitsize > 8*inttype->size || p->bitsize < 0) {
|
if (p->bitsize > 8*inttype->size || p->bitsize < 0) {
|
error("`%d' is an illegal bit-field size\n",
|
error("`%d' is an illegal bit-field size\n",
|
p->bitsize);
|
p->bitsize);
|
p->bitsize = 8*inttype->size;
|
p->bitsize = 8*inttype->size;
|
} else if (p->bitsize == 0 && id) {
|
} else if (p->bitsize == 0 && id) {
|
warning("extraneous 0-width bit field `%t %s' ignored\n", p->type, id);
|
warning("extraneous 0-width bit field `%t %s' ignored\n", p->type, id);
|
|
|
p->name = stringd(genlabel(1));
|
p->name = stringd(genlabel(1));
|
}
|
}
|
p->lsb = 1;
|
p->lsb = 1;
|
}
|
}
|
else {
|
else {
|
if (id == NULL)
|
if (id == NULL)
|
error("field name missing\n");
|
error("field name missing\n");
|
else if (isfunc(p->type))
|
else if (isfunc(p->type))
|
error("`%t' is an illegal field type\n", p->type);
|
error("`%t' is an illegal field type\n", p->type);
|
else if (p->type->size == 0)
|
else if (p->type->size == 0)
|
error("undefined size for field `%t %s'\n",
|
error("undefined size for field `%t %s'\n",
|
p->type, id);
|
p->type, id);
|
}
|
}
|
if (isconst(p->type))
|
if (isconst(p->type))
|
ty->u.sym->u.s.cfields = 1;
|
ty->u.sym->u.s.cfields = 1;
|
if (isvolatile(p->type))
|
if (isvolatile(p->type))
|
ty->u.sym->u.s.vfields = 1;
|
ty->u.sym->u.s.vfields = 1;
|
n++;
|
n++;
|
if (Aflag >= 2 && n == 128)
|
if (Aflag >= 2 && n == 128)
|
warning("more than 127 fields in `%t'\n", ty);
|
warning("more than 127 fields in `%t'\n", ty);
|
if (t != ',')
|
if (t != ',')
|
break;
|
break;
|
t = gettok();
|
t = gettok();
|
}
|
}
|
test(';', stop);
|
test(';', stop);
|
} }
|
} }
|
{ int bits = 0, off = 0, overflow = 0;
|
{ int bits = 0, off = 0, overflow = 0;
|
Field p, *q = &ty->u.sym->u.s.flist;
|
Field p, *q = &ty->u.sym->u.s.flist;
|
ty->align = IR->structmetric.align;
|
ty->align = IR->structmetric.align;
|
for (p = *q; p; p = p->link) {
|
for (p = *q; p; p = p->link) {
|
int a = p->type->align ? p->type->align : 1;
|
int a = p->type->align ? p->type->align : 1;
|
if (p->lsb)
|
if (p->lsb)
|
a = unsignedtype->align;
|
a = unsignedtype->align;
|
if (ty->op == UNION)
|
if (ty->op == UNION)
|
off = bits = 0;
|
off = bits = 0;
|
else if (p->bitsize == 0 || bits == 0
|
else if (p->bitsize == 0 || bits == 0
|
|| bits - 1 + p->bitsize > 8*unsignedtype->size) {
|
|| bits - 1 + p->bitsize > 8*unsignedtype->size) {
|
off = add(off, bits2bytes(bits-1));
|
off = add(off, bits2bytes(bits-1));
|
bits = 0;
|
bits = 0;
|
chkoverflow(off, a - 1);
|
chkoverflow(off, a - 1);
|
off = roundup(off, a);
|
off = roundup(off, a);
|
}
|
}
|
if (a > ty->align)
|
if (a > ty->align)
|
ty->align = a;
|
ty->align = a;
|
p->offset = off;
|
p->offset = off;
|
|
|
if (p->lsb) {
|
if (p->lsb) {
|
if (bits == 0)
|
if (bits == 0)
|
bits = 1;
|
bits = 1;
|
if (IR->little_endian)
|
if (IR->little_endian)
|
p->lsb = bits;
|
p->lsb = bits;
|
else
|
else
|
p->lsb = 8*unsignedtype->size - bits + 1
|
p->lsb = 8*unsignedtype->size - bits + 1
|
- p->bitsize + 1;
|
- p->bitsize + 1;
|
bits += p->bitsize;
|
bits += p->bitsize;
|
} else
|
} else
|
off = add(off, p->type->size);
|
off = add(off, p->type->size);
|
if (off + bits2bytes(bits-1) > ty->size)
|
if (off + bits2bytes(bits-1) > ty->size)
|
ty->size = off + bits2bytes(bits-1);
|
ty->size = off + bits2bytes(bits-1);
|
if (p->name == NULL
|
if (p->name == NULL
|
|| !('1' <= *p->name && *p->name <= '9')) {
|
|| !('1' <= *p->name && *p->name <= '9')) {
|
*q = p;
|
*q = p;
|
q = &p->link;
|
q = &p->link;
|
}
|
}
|
}
|
}
|
*q = NULL;
|
*q = NULL;
|
chkoverflow(ty->size, ty->align - 1);
|
chkoverflow(ty->size, ty->align - 1);
|
ty->size = roundup(ty->size, ty->align);
|
ty->size = roundup(ty->size, ty->align);
|
if (overflow) {
|
if (overflow) {
|
error("size of `%t' exceeds %d bytes\n", ty, inttype->u.sym->u.limits.max.i);
|
error("size of `%t' exceeds %d bytes\n", ty, inttype->u.sym->u.limits.max.i);
|
ty->size = inttype->u.sym->u.limits.max.i&(~(ty->align - 1));
|
ty->size = inttype->u.sym->u.limits.max.i&(~(ty->align - 1));
|
} }
|
} }
|
}
|
}
|
static void funcdefn(int sclass, char *id, Type ty, Symbol params[], Coordinate pt) {
|
static void funcdefn(int sclass, char *id, Type ty, Symbol params[], Coordinate pt) {
|
int i, n;
|
int i, n;
|
Symbol *callee, *caller, p;
|
Symbol *callee, *caller, p;
|
Type rty = freturn(ty);
|
Type rty = freturn(ty);
|
|
|
if (isstruct(rty) && rty->size == 0)
|
if (isstruct(rty) && rty->size == 0)
|
error("illegal use of incomplete type `%t'\n", rty);
|
error("illegal use of incomplete type `%t'\n", rty);
|
for (n = 0; params[n]; n++)
|
for (n = 0; params[n]; n++)
|
;
|
;
|
if (n > 0 && params[n-1]->name == NULL)
|
if (n > 0 && params[n-1]->name == NULL)
|
params[--n] = NULL;
|
params[--n] = NULL;
|
if (Aflag >= 2 && n > 31)
|
if (Aflag >= 2 && n > 31)
|
warning("more than 31 parameters in function `%s'\n", id);
|
warning("more than 31 parameters in function `%s'\n", id);
|
if (ty->u.f.oldstyle) {
|
if (ty->u.f.oldstyle) {
|
if (Aflag >= 1)
|
if (Aflag >= 1)
|
warning("old-style function definition for `%s'\n", id);
|
warning("old-style function definition for `%s'\n", id);
|
caller = params;
|
caller = params;
|
callee = newarray(n + 1, sizeof *callee, FUNC);
|
callee = newarray(n + 1, sizeof *callee, FUNC);
|
memcpy(callee, caller, (n+1)*sizeof *callee);
|
memcpy(callee, caller, (n+1)*sizeof *callee);
|
enterscope();
|
enterscope();
|
assert(level == PARAM);
|
assert(level == PARAM);
|
while (kind[t] == STATIC || istypename(t, tsym))
|
while (kind[t] == STATIC || istypename(t, tsym))
|
decl(dclparam);
|
decl(dclparam);
|
foreach(identifiers, PARAM, oldparam, callee);
|
foreach(identifiers, PARAM, oldparam, callee);
|
|
|
for (i = 0; (p = callee[i]) != NULL; i++) {
|
for (i = 0; (p = callee[i]) != NULL; i++) {
|
if (!p->defined)
|
if (!p->defined)
|
callee[i] = dclparam(0, p->name, inttype, &p->src);
|
callee[i] = dclparam(0, p->name, inttype, &p->src);
|
*caller[i] = *p;
|
*caller[i] = *p;
|
caller[i]->sclass = AUTO;
|
caller[i]->sclass = AUTO;
|
caller[i]->type = promote(p->type);
|
caller[i]->type = promote(p->type);
|
}
|
}
|
p = lookup(id, identifiers);
|
p = lookup(id, identifiers);
|
if (p && p->scope == GLOBAL && isfunc(p->type)
|
if (p && p->scope == GLOBAL && isfunc(p->type)
|
&& p->type->u.f.proto) {
|
&& p->type->u.f.proto) {
|
Type *proto = p->type->u.f.proto;
|
Type *proto = p->type->u.f.proto;
|
for (i = 0; caller[i] && proto[i]; i++) {
|
for (i = 0; caller[i] && proto[i]; i++) {
|
Type ty = unqual(proto[i]);
|
Type ty = unqual(proto[i]);
|
if (eqtype(isenum(ty) ? ty->type : ty,
|
if (eqtype(isenum(ty) ? ty->type : ty,
|
unqual(caller[i]->type), 1) == 0)
|
unqual(caller[i]->type), 1) == 0)
|
break;
|
break;
|
else if (isenum(ty) && !isenum(unqual(caller[i]->type)))
|
else if (isenum(ty) && !isenum(unqual(caller[i]->type)))
|
warning("compatibility of `%t' and `%t' is compiler dependent\n",
|
warning("compatibility of `%t' and `%t' is compiler dependent\n",
|
proto[i], caller[i]->type);
|
proto[i], caller[i]->type);
|
}
|
}
|
if (proto[i] || caller[i])
|
if (proto[i] || caller[i])
|
error("conflicting argument declarations for function `%s'\n", id);
|
error("conflicting argument declarations for function `%s'\n", id);
|
|
|
}
|
}
|
else {
|
else {
|
Type *proto = newarray(n + 1, sizeof *proto, PERM);
|
Type *proto = newarray(n + 1, sizeof *proto, PERM);
|
if (Aflag >= 1)
|
if (Aflag >= 1)
|
warning("missing prototype for `%s'\n", id);
|
warning("missing prototype for `%s'\n", id);
|
for (i = 0; i < n; i++)
|
for (i = 0; i < n; i++)
|
proto[i] = caller[i]->type;
|
proto[i] = caller[i]->type;
|
proto[i] = NULL;
|
proto[i] = NULL;
|
ty = func(rty, proto, 1);
|
ty = func(rty, proto, 1);
|
}
|
}
|
} else {
|
} else {
|
callee = params;
|
callee = params;
|
caller = newarray(n + 1, sizeof *caller, FUNC);
|
caller = newarray(n + 1, sizeof *caller, FUNC);
|
for (i = 0; (p = callee[i]) != NULL && p->name; i++) {
|
for (i = 0; (p = callee[i]) != NULL && p->name; i++) {
|
NEW(caller[i], FUNC);
|
NEW(caller[i], FUNC);
|
*caller[i] = *p;
|
*caller[i] = *p;
|
if (isint(p->type))
|
if (isint(p->type))
|
caller[i]->type = promote(p->type);
|
caller[i]->type = promote(p->type);
|
caller[i]->sclass = AUTO;
|
caller[i]->sclass = AUTO;
|
if ('1' <= *p->name && *p->name <= '9')
|
if ('1' <= *p->name && *p->name <= '9')
|
error("missing name for parameter %d to function `%s'\n", i + 1, id);
|
error("missing name for parameter %d to function `%s'\n", i + 1, id);
|
|
|
}
|
}
|
caller[i] = NULL;
|
caller[i] = NULL;
|
}
|
}
|
for (i = 0; (p = callee[i]) != NULL; i++)
|
for (i = 0; (p = callee[i]) != NULL; i++)
|
if (p->type->size == 0) {
|
if (p->type->size == 0) {
|
error("undefined size for parameter `%t %s'\n",
|
error("undefined size for parameter `%t %s'\n",
|
p->type, p->name);
|
p->type, p->name);
|
caller[i]->type = p->type = inttype;
|
caller[i]->type = p->type = inttype;
|
}
|
}
|
if (Aflag >= 2 && sclass != STATIC && strcmp(id, "main") == 0) {
|
if (Aflag >= 2 && sclass != STATIC && strcmp(id, "main") == 0) {
|
if (ty->u.f.oldstyle)
|
if (ty->u.f.oldstyle)
|
warning("`%t %s()' is a non-ANSI definition\n", rty, id);
|
warning("`%t %s()' is a non-ANSI definition\n", rty, id);
|
else if (!(rty == inttype
|
else if (!(rty == inttype
|
&& (n == 0 && callee[0] == NULL
|
&& (n == 0 && callee[0] == NULL
|
|| n == 2 && callee[0]->type == inttype
|
|| n == 2 && callee[0]->type == inttype
|
&& isptr(callee[1]->type) && callee[1]->type->type == charptype
|
&& isptr(callee[1]->type) && callee[1]->type->type == charptype
|
&& !variadic(ty))))
|
&& !variadic(ty))))
|
warning("`%s' is a non-ANSI definition\n", typestring(ty, id));
|
warning("`%s' is a non-ANSI definition\n", typestring(ty, id));
|
}
|
}
|
p = lookup(id, identifiers);
|
p = lookup(id, identifiers);
|
if (p && isfunc(p->type) && p->defined)
|
if (p && isfunc(p->type) && p->defined)
|
error("redefinition of `%s' previously defined at %w\n",
|
error("redefinition of `%s' previously defined at %w\n",
|
p->name, &p->src);
|
p->name, &p->src);
|
cfunc = dclglobal(sclass, id, ty, &pt);
|
cfunc = dclglobal(sclass, id, ty, &pt);
|
cfunc->u.f.label = genlabel(1);
|
cfunc->u.f.label = genlabel(1);
|
cfunc->u.f.callee = callee;
|
cfunc->u.f.callee = callee;
|
cfunc->u.f.pt = src;
|
cfunc->u.f.pt = src;
|
cfunc->defined = 1;
|
cfunc->defined = 1;
|
if (xref)
|
if (xref)
|
use(cfunc, cfunc->src);
|
use(cfunc, cfunc->src);
|
if (Pflag)
|
if (Pflag)
|
printproto(cfunc, cfunc->u.f.callee);
|
printproto(cfunc, cfunc->u.f.callee);
|
if (ncalled >= 0)
|
if (ncalled >= 0)
|
ncalled = findfunc(cfunc->name, pt.file);
|
ncalled = findfunc(cfunc->name, pt.file);
|
labels = table(NULL, LABELS);
|
labels = table(NULL, LABELS);
|
stmtlabs = table(NULL, LABELS);
|
stmtlabs = table(NULL, LABELS);
|
refinc = 1.0;
|
refinc = 1.0;
|
regcount = 0;
|
regcount = 0;
|
codelist = &codehead;
|
codelist = &codehead;
|
codelist->next = NULL;
|
codelist->next = NULL;
|
if (!IR->wants_callb && isstruct(rty))
|
if (!IR->wants_callb && isstruct(rty))
|
retv = genident(AUTO, ptr(unqual(rty)), PARAM);
|
retv = genident(AUTO, ptr(unqual(rty)), PARAM);
|
compound(0, NULL, 0);
|
compound(0, NULL, 0);
|
|
|
definelab(cfunc->u.f.label);
|
definelab(cfunc->u.f.label);
|
if (events.exit)
|
if (events.exit)
|
apply(events.exit, cfunc, NULL);
|
apply(events.exit, cfunc, NULL);
|
walk(NULL, 0, 0);
|
walk(NULL, 0, 0);
|
exitscope();
|
exitscope();
|
assert(level == PARAM);
|
assert(level == PARAM);
|
foreach(identifiers, level, checkref, NULL);
|
foreach(identifiers, level, checkref, NULL);
|
if (!IR->wants_callb && isstruct(rty)) {
|
if (!IR->wants_callb && isstruct(rty)) {
|
Symbol *a;
|
Symbol *a;
|
a = newarray(n + 2, sizeof *a, FUNC);
|
a = newarray(n + 2, sizeof *a, FUNC);
|
a[0] = retv;
|
a[0] = retv;
|
memcpy(&a[1], callee, (n+1)*sizeof *callee);
|
memcpy(&a[1], callee, (n+1)*sizeof *callee);
|
callee = a;
|
callee = a;
|
a = newarray(n + 2, sizeof *a, FUNC);
|
a = newarray(n + 2, sizeof *a, FUNC);
|
NEW(a[0], FUNC);
|
NEW(a[0], FUNC);
|
*a[0] = *retv;
|
*a[0] = *retv;
|
memcpy(&a[1], caller, (n+1)*sizeof *callee);
|
memcpy(&a[1], caller, (n+1)*sizeof *callee);
|
caller = a;
|
caller = a;
|
}
|
}
|
if (!IR->wants_argb)
|
if (!IR->wants_argb)
|
for (i = 0; caller[i]; i++)
|
for (i = 0; caller[i]; i++)
|
if (isstruct(caller[i]->type)) {
|
if (isstruct(caller[i]->type)) {
|
caller[i]->type = ptr(caller[i]->type);
|
caller[i]->type = ptr(caller[i]->type);
|
callee[i]->type = ptr(callee[i]->type);
|
callee[i]->type = ptr(callee[i]->type);
|
caller[i]->structarg = callee[i]->structarg = 1;
|
caller[i]->structarg = callee[i]->structarg = 1;
|
}
|
}
|
if (glevel > 1) for (i = 0; callee[i]; i++) callee[i]->sclass = AUTO;
|
if (glevel > 1) for (i = 0; callee[i]; i++) callee[i]->sclass = AUTO;
|
if (cfunc->sclass != STATIC)
|
if (cfunc->sclass != STATIC)
|
(*IR->export)(cfunc);
|
(*IR->export)(cfunc);
|
if (glevel && IR->stabsym) {
|
if (glevel && IR->stabsym) {
|
swtoseg(CODE); (*IR->stabsym)(cfunc); }
|
swtoseg(CODE); (*IR->stabsym)(cfunc); }
|
swtoseg(CODE);
|
swtoseg(CODE);
|
(*IR->function)(cfunc, caller, callee, cfunc->u.f.ncalls);
|
(*IR->function)(cfunc, caller, callee, cfunc->u.f.ncalls);
|
if (glevel && IR->stabfend)
|
if (glevel && IR->stabfend)
|
(*IR->stabfend)(cfunc, lineno);
|
(*IR->stabfend)(cfunc, lineno);
|
foreach(stmtlabs, LABELS, checklab, NULL);
|
foreach(stmtlabs, LABELS, checklab, NULL);
|
exitscope();
|
exitscope();
|
expect('}');
|
expect('}');
|
labels = stmtlabs = NULL;
|
labels = stmtlabs = NULL;
|
retv = NULL;
|
retv = NULL;
|
cfunc = NULL;
|
cfunc = NULL;
|
}
|
}
|
static void oldparam(Symbol p, void *cl) {
|
static void oldparam(Symbol p, void *cl) {
|
int i;
|
int i;
|
Symbol *callee = cl;
|
Symbol *callee = cl;
|
|
|
for (i = 0; callee[i]; i++)
|
for (i = 0; callee[i]; i++)
|
if (p->name == callee[i]->name) {
|
if (p->name == callee[i]->name) {
|
callee[i] = p;
|
callee[i] = p;
|
return;
|
return;
|
}
|
}
|
error("declared parameter `%s' is missing\n", p->name);
|
error("declared parameter `%s' is missing\n", p->name);
|
}
|
}
|
void compound(int loop, struct swtch *swp, int lev) {
|
void compound(int loop, struct swtch *swp, int lev) {
|
Code cp;
|
Code cp;
|
int nregs;
|
int nregs;
|
|
|
walk(NULL, 0, 0);
|
walk(NULL, 0, 0);
|
cp = code(Blockbeg);
|
cp = code(Blockbeg);
|
enterscope();
|
enterscope();
|
assert(level >= LOCAL);
|
assert(level >= LOCAL);
|
if (level == LOCAL && events.entry)
|
if (level == LOCAL && events.entry)
|
apply(events.entry, cfunc, NULL);
|
apply(events.entry, cfunc, NULL);
|
definept(NULL);
|
definept(NULL);
|
expect('{');
|
expect('{');
|
autos = registers = NULL;
|
autos = registers = NULL;
|
if (level == LOCAL && IR->wants_callb
|
if (level == LOCAL && IR->wants_callb
|
&& isstruct(freturn(cfunc->type))) {
|
&& isstruct(freturn(cfunc->type))) {
|
retv = genident(AUTO, ptr(unqual(freturn(cfunc->type))), level);
|
retv = genident(AUTO, ptr(unqual(freturn(cfunc->type))), level);
|
retv->defined = 1;
|
retv->defined = 1;
|
retv->ref = 1;
|
retv->ref = 1;
|
registers = append(retv, registers);
|
registers = append(retv, registers);
|
}
|
}
|
while (kind[t] == CHAR || kind[t] == STATIC
|
while (kind[t] == CHAR || kind[t] == STATIC
|
|| istypename(t, tsym) && getchr() != ':')
|
|| istypename(t, tsym) && getchr() != ':')
|
decl(dcllocal);
|
decl(dcllocal);
|
{
|
{
|
int i;
|
int i;
|
Symbol *a = ltov(&autos, STMT);
|
Symbol *a = ltov(&autos, STMT);
|
nregs = length(registers);
|
nregs = length(registers);
|
for (i = 0; a[i]; i++)
|
for (i = 0; a[i]; i++)
|
registers = append(a[i], registers);
|
registers = append(a[i], registers);
|
cp->u.block.locals = ltov(®isters, FUNC);
|
cp->u.block.locals = ltov(®isters, FUNC);
|
}
|
}
|
if (events.blockentry)
|
if (events.blockentry)
|
apply(events.blockentry, cp->u.block.locals, NULL);
|
apply(events.blockentry, cp->u.block.locals, NULL);
|
while (kind[t] == IF || kind[t] == ID)
|
while (kind[t] == IF || kind[t] == ID)
|
statement(loop, swp, lev);
|
statement(loop, swp, lev);
|
walk(NULL, 0, 0);
|
walk(NULL, 0, 0);
|
foreach(identifiers, level, checkref, NULL);
|
foreach(identifiers, level, checkref, NULL);
|
{
|
{
|
int i = nregs, j;
|
int i = nregs, j;
|
Symbol p;
|
Symbol p;
|
for ( ; (p = cp->u.block.locals[i]) != NULL; i++) {
|
for ( ; (p = cp->u.block.locals[i]) != NULL; i++) {
|
for (j = i; j > nregs
|
for (j = i; j > nregs
|
&& cp->u.block.locals[j-1]->ref < p->ref; j--)
|
&& cp->u.block.locals[j-1]->ref < p->ref; j--)
|
cp->u.block.locals[j] = cp->u.block.locals[j-1];
|
cp->u.block.locals[j] = cp->u.block.locals[j-1];
|
cp->u.block.locals[j] = p;
|
cp->u.block.locals[j] = p;
|
}
|
}
|
}
|
}
|
if (level == LOCAL) {
|
if (level == LOCAL) {
|
Code cp;
|
Code cp;
|
for (cp = codelist; cp->kind < Label; cp = cp->prev)
|
for (cp = codelist; cp->kind < Label; cp = cp->prev)
|
;
|
;
|
if (cp->kind != Jump) {
|
if (cp->kind != Jump) {
|
if (freturn(cfunc->type) != voidtype) {
|
if (freturn(cfunc->type) != voidtype) {
|
warning("missing return value\n");
|
warning("missing return value\n");
|
retcode(cnsttree(inttype, 0L));
|
retcode(cnsttree(inttype, 0L));
|
} else
|
} else
|
retcode(NULL);
|
retcode(NULL);
|
}
|
}
|
}
|
}
|
if (events.blockexit)
|
if (events.blockexit)
|
apply(events.blockexit, cp->u.block.locals, NULL);
|
apply(events.blockexit, cp->u.block.locals, NULL);
|
cp->u.block.level = level;
|
cp->u.block.level = level;
|
cp->u.block.identifiers = identifiers;
|
cp->u.block.identifiers = identifiers;
|
cp->u.block.types = types;
|
cp->u.block.types = types;
|
code(Blockend)->u.begin = cp;
|
code(Blockend)->u.begin = cp;
|
if (reachable(Gen))
|
if (reachable(Gen))
|
definept(NULL);
|
definept(NULL);
|
if (level > LOCAL) {
|
if (level > LOCAL) {
|
exitscope();
|
exitscope();
|
expect('}');
|
expect('}');
|
}
|
}
|
}
|
}
|
static void checkref(Symbol p, void *cl) {
|
static void checkref(Symbol p, void *cl) {
|
if (p->scope >= PARAM
|
if (p->scope >= PARAM
|
&& (isvolatile(p->type) || isfunc(p->type)))
|
&& (isvolatile(p->type) || isfunc(p->type)))
|
p->addressed = 1;
|
p->addressed = 1;
|
if (Aflag >= 2 && p->defined && p->ref == 0) {
|
if (Aflag >= 2 && p->defined && p->ref == 0) {
|
if (p->sclass == STATIC)
|
if (p->sclass == STATIC)
|
warning("static `%t %s' is not referenced\n",
|
warning("static `%t %s' is not referenced\n",
|
p->type, p->name);
|
p->type, p->name);
|
else if (p->scope == PARAM)
|
else if (p->scope == PARAM)
|
warning("parameter `%t %s' is not referenced\n",
|
warning("parameter `%t %s' is not referenced\n",
|
p->type, p->name);
|
p->type, p->name);
|
else if (p->scope >= LOCAL && p->sclass != EXTERN)
|
else if (p->scope >= LOCAL && p->sclass != EXTERN)
|
warning("local `%t %s' is not referenced\n",
|
warning("local `%t %s' is not referenced\n",
|
p->type, p->name);
|
p->type, p->name);
|
}
|
}
|
if (p->sclass == AUTO
|
if (p->sclass == AUTO
|
&& (p->scope == PARAM && regcount == 0
|
&& (p->scope == PARAM && regcount == 0
|
|| p->scope >= LOCAL)
|
|| p->scope >= LOCAL)
|
&& !p->addressed && isscalar(p->type) && p->ref >= 3.0)
|
&& !p->addressed && isscalar(p->type) && p->ref >= 3.0)
|
p->sclass = REGISTER;
|
p->sclass = REGISTER;
|
if (level == GLOBAL && p->sclass == STATIC && !p->defined
|
if (level == GLOBAL && p->sclass == STATIC && !p->defined
|
&& isfunc(p->type) && p->ref)
|
&& isfunc(p->type) && p->ref)
|
error("undefined static `%t %s'\n", p->type, p->name);
|
error("undefined static `%t %s'\n", p->type, p->name);
|
assert(!(level == GLOBAL && p->sclass == STATIC && !p->defined && !isfunc(p->type)));
|
assert(!(level == GLOBAL && p->sclass == STATIC && !p->defined && !isfunc(p->type)));
|
}
|
}
|
static Symbol dcllocal(int sclass, char *id, Type ty, Coordinate *pos) {
|
static Symbol dcllocal(int sclass, char *id, Type ty, Coordinate *pos) {
|
Symbol p, q;
|
Symbol p, q;
|
|
|
if (sclass == 0)
|
if (sclass == 0)
|
sclass = isfunc(ty) ? EXTERN : AUTO;
|
sclass = isfunc(ty) ? EXTERN : AUTO;
|
else if (isfunc(ty) && sclass != EXTERN) {
|
else if (isfunc(ty) && sclass != EXTERN) {
|
error("invalid storage class `%k' for `%t %s'\n",
|
error("invalid storage class `%k' for `%t %s'\n",
|
sclass, ty, id);
|
sclass, ty, id);
|
sclass = EXTERN;
|
sclass = EXTERN;
|
} else if (sclass == REGISTER
|
} else if (sclass == REGISTER
|
&& (isvolatile(ty) || isstruct(ty) || isarray(ty))) {
|
&& (isvolatile(ty) || isstruct(ty) || isarray(ty))) {
|
warning("register declaration ignored for `%t %s'\n",
|
warning("register declaration ignored for `%t %s'\n",
|
ty, id);
|
ty, id);
|
sclass = AUTO;
|
sclass = AUTO;
|
}
|
}
|
q = lookup(id, identifiers);
|
q = lookup(id, identifiers);
|
if (q && q->scope >= level
|
if (q && q->scope >= level
|
|| q && q->scope == PARAM && level == LOCAL)
|
|| q && q->scope == PARAM && level == LOCAL)
|
if (sclass == EXTERN && q->sclass == EXTERN
|
if (sclass == EXTERN && q->sclass == EXTERN
|
&& eqtype(q->type, ty, 1))
|
&& eqtype(q->type, ty, 1))
|
ty = compose(ty, q->type);
|
ty = compose(ty, q->type);
|
else
|
else
|
error("redeclaration of `%s' previously declared at %w\n", q->name, &q->src);
|
error("redeclaration of `%s' previously declared at %w\n", q->name, &q->src);
|
|
|
assert(level >= LOCAL);
|
assert(level >= LOCAL);
|
p = install(id, &identifiers, level, sclass == STATIC || sclass == EXTERN ? PERM : FUNC);
|
p = install(id, &identifiers, level, sclass == STATIC || sclass == EXTERN ? PERM : FUNC);
|
p->type = ty;
|
p->type = ty;
|
p->sclass = sclass;
|
p->sclass = sclass;
|
p->src = *pos;
|
p->src = *pos;
|
switch (sclass) {
|
switch (sclass) {
|
case EXTERN: q = lookup(id, globals);
|
case EXTERN: q = lookup(id, globals);
|
if (q == NULL || q->sclass == TYPEDEF || q->sclass == ENUM) {
|
if (q == NULL || q->sclass == TYPEDEF || q->sclass == ENUM) {
|
q = lookup(id, externals);
|
q = lookup(id, externals);
|
if (q == NULL) {
|
if (q == NULL) {
|
q = install(p->name, &externals, GLOBAL, PERM);
|
q = install(p->name, &externals, GLOBAL, PERM);
|
q->type = p->type;
|
q->type = p->type;
|
q->sclass = EXTERN;
|
q->sclass = EXTERN;
|
q->src = src;
|
q->src = src;
|
(*IR->defsymbol)(q);
|
(*IR->defsymbol)(q);
|
}
|
}
|
}
|
}
|
if (!eqtype(p->type, q->type, 1))
|
if (!eqtype(p->type, q->type, 1))
|
warning("declaration of `%s' does not match previous declaration at %w\n", q->name, &q->src);
|
warning("declaration of `%s' does not match previous declaration at %w\n", q->name, &q->src);
|
|
|
p->u.alias = q; break;
|
p->u.alias = q; break;
|
case STATIC: (*IR->defsymbol)(p);
|
case STATIC: (*IR->defsymbol)(p);
|
initglobal(p, 0);
|
initglobal(p, 0);
|
if (!p->defined)
|
if (!p->defined)
|
if (p->type->size > 0) {
|
if (p->type->size > 0) {
|
defglobal(p, BSS);
|
defglobal(p, BSS);
|
(*IR->space)(p->type->size);
|
(*IR->space)(p->type->size);
|
} else
|
} else
|
error("undefined size for `%t %s'\n",
|
error("undefined size for `%t %s'\n",
|
p->type, p->name);
|
p->type, p->name);
|
p->defined = 1; break;
|
p->defined = 1; break;
|
case REGISTER: registers = append(p, registers);
|
case REGISTER: registers = append(p, registers);
|
regcount++;
|
regcount++;
|
p->defined = 1;
|
p->defined = 1;
|
break;
|
break;
|
case AUTO: autos = append(p, autos);
|
case AUTO: autos = append(p, autos);
|
p->defined = 1;
|
p->defined = 1;
|
if (isarray(ty))
|
if (isarray(ty))
|
p->addressed = 1; break;
|
p->addressed = 1; break;
|
default: assert(0);
|
default: assert(0);
|
}
|
}
|
if (t == '=') {
|
if (t == '=') {
|
Tree e;
|
Tree e;
|
if (sclass == EXTERN)
|
if (sclass == EXTERN)
|
error("illegal initialization of `extern %s'\n", id);
|
error("illegal initialization of `extern %s'\n", id);
|
t = gettok();
|
t = gettok();
|
definept(NULL);
|
definept(NULL);
|
if (isscalar(p->type)
|
if (isscalar(p->type)
|
|| isstruct(p->type) && t != '{') {
|
|| isstruct(p->type) && t != '{') {
|
if (t == '{') {
|
if (t == '{') {
|
t = gettok();
|
t = gettok();
|
e = expr1(0);
|
e = expr1(0);
|
expect('}');
|
expect('}');
|
} else
|
} else
|
e = expr1(0);
|
e = expr1(0);
|
} else {
|
} else {
|
Symbol t1;
|
Symbol t1;
|
Type ty = p->type, ty1 = ty;
|
Type ty = p->type, ty1 = ty;
|
while (isarray(ty1))
|
while (isarray(ty1))
|
ty1 = ty1->type;
|
ty1 = ty1->type;
|
if (!isconst(ty) && (!isarray(ty) || !isconst(ty1)))
|
if (!isconst(ty) && (!isarray(ty) || !isconst(ty1)))
|
ty = qual(CONST, ty);
|
ty = qual(CONST, ty);
|
t1 = genident(STATIC, ty, GLOBAL);
|
t1 = genident(STATIC, ty, GLOBAL);
|
initglobal(t1, 1);
|
initglobal(t1, 1);
|
if (isarray(p->type) && p->type->size == 0
|
if (isarray(p->type) && p->type->size == 0
|
&& t1->type->size > 0)
|
&& t1->type->size > 0)
|
p->type = array(p->type->type,
|
p->type = array(p->type->type,
|
t1->type->size/t1->type->type->size, 0);
|
t1->type->size/t1->type->type->size, 0);
|
e = idtree(t1);
|
e = idtree(t1);
|
}
|
}
|
walk(root(asgn(p, e)), 0, 0);
|
walk(root(asgn(p, e)), 0, 0);
|
p->ref = 1;
|
p->ref = 1;
|
}
|
}
|
if (!isfunc(p->type) && p->defined && p->type->size <= 0)
|
if (!isfunc(p->type) && p->defined && p->type->size <= 0)
|
error("undefined size for `%t %s'\n", p->type, id);
|
error("undefined size for `%t %s'\n", p->type, id);
|
return p;
|
return p;
|
}
|
}
|
void finalize(void) {
|
void finalize(void) {
|
foreach(externals, GLOBAL, doextern, NULL);
|
foreach(externals, GLOBAL, doextern, NULL);
|
foreach(identifiers, GLOBAL, doglobal, NULL);
|
foreach(identifiers, GLOBAL, doglobal, NULL);
|
foreach(identifiers, GLOBAL, checkref, NULL);
|
foreach(identifiers, GLOBAL, checkref, NULL);
|
foreach(constants, CONSTANTS, doconst, NULL);
|
foreach(constants, CONSTANTS, doconst, NULL);
|
}
|
}
|
static void doextern(Symbol p, void *cl) {
|
static void doextern(Symbol p, void *cl) {
|
(*IR->import)(p);
|
(*IR->import)(p);
|
}
|
}
|
static void doglobal(Symbol p, void *cl) {
|
static void doglobal(Symbol p, void *cl) {
|
if (!p->defined && (p->sclass == EXTERN
|
if (!p->defined && (p->sclass == EXTERN
|
|| isfunc(p->type) && p->sclass == AUTO))
|
|| isfunc(p->type) && p->sclass == AUTO))
|
(*IR->import)(p);
|
(*IR->import)(p);
|
else if (!p->defined && !isfunc(p->type)
|
else if (!p->defined && !isfunc(p->type)
|
&& (p->sclass == AUTO || p->sclass == STATIC)) {
|
&& (p->sclass == AUTO || p->sclass == STATIC)) {
|
if (isarray(p->type)
|
if (isarray(p->type)
|
&& p->type->size == 0 && p->type->type->size > 0)
|
&& p->type->size == 0 && p->type->type->size > 0)
|
p->type = array(p->type->type, 1, 0);
|
p->type = array(p->type->type, 1, 0);
|
if (p->type->size > 0) {
|
if (p->type->size > 0) {
|
defglobal(p, BSS);
|
defglobal(p, BSS);
|
(*IR->space)(p->type->size);
|
(*IR->space)(p->type->size);
|
if (glevel > 0 && IR->stabsym)
|
if (glevel > 0 && IR->stabsym)
|
(*IR->stabsym)(p);
|
(*IR->stabsym)(p);
|
} else
|
} else
|
error("undefined size for `%t %s'\n",
|
error("undefined size for `%t %s'\n",
|
p->type, p->name);
|
p->type, p->name);
|
p->defined = 1;
|
p->defined = 1;
|
}
|
}
|
if (Pflag
|
if (Pflag
|
&& !isfunc(p->type)
|
&& !isfunc(p->type)
|
&& !p->generated && p->sclass != EXTERN)
|
&& !p->generated && p->sclass != EXTERN)
|
printdecl(p, p->type);
|
printdecl(p, p->type);
|
}
|
}
|
void doconst(Symbol p, void *cl) {
|
void doconst(Symbol p, void *cl) {
|
if (p->u.c.loc) {
|
if (p->u.c.loc) {
|
assert(p->u.c.loc->u.seg == 0);
|
assert(p->u.c.loc->u.seg == 0);
|
defglobal(p->u.c.loc, LIT);
|
defglobal(p->u.c.loc, LIT);
|
if (isarray(p->type) && p->type->type == widechar) {
|
if (isarray(p->type) && p->type->type == widechar) {
|
unsigned int *s = p->u.c.v.p;
|
unsigned int *s = p->u.c.v.p;
|
int n = p->type->size/widechar->size;
|
int n = p->type->size/widechar->size;
|
while (n-- > 0) {
|
while (n-- > 0) {
|
Value v;
|
Value v;
|
v.u = *s++;
|
v.u = *s++;
|
(*IR->defconst)(widechar->op, widechar->size, v);
|
(*IR->defconst)(widechar->op, widechar->size, v);
|
}
|
}
|
} else if (isarray(p->type))
|
} else if (isarray(p->type))
|
(*IR->defstring)(p->type->size, p->u.c.v.p);
|
(*IR->defstring)(p->type->size, p->u.c.v.p);
|
else
|
else
|
(*IR->defconst)(p->type->op, p->type->size, p->u.c.v);
|
(*IR->defconst)(p->type->op, p->type->size, p->u.c.v);
|
p->u.c.loc = NULL;
|
p->u.c.loc = NULL;
|
}
|
}
|
}
|
}
|
void checklab(Symbol p, void *cl) {
|
void checklab(Symbol p, void *cl) {
|
if (!p->defined)
|
if (!p->defined)
|
error("undefined label `%s'\n", p->name);
|
error("undefined label `%s'\n", p->name);
|
p->defined = 1;
|
p->defined = 1;
|
}
|
}
|
|
|
Type enumdcl(void) {
|
Type enumdcl(void) {
|
char *tag;
|
char *tag;
|
Type ty;
|
Type ty;
|
Symbol p;
|
Symbol p;
|
Coordinate pos;
|
Coordinate pos;
|
|
|
t = gettok();
|
t = gettok();
|
pos = src;
|
pos = src;
|
if (t == ID) {
|
if (t == ID) {
|
tag = token;
|
tag = token;
|
t = gettok();
|
t = gettok();
|
} else
|
} else
|
tag = "";
|
tag = "";
|
if (t == '{') {
|
if (t == '{') {
|
static char follow[] = { IF, 0 };
|
static char follow[] = { IF, 0 };
|
int n = 0;
|
int n = 0;
|
long k = -1;
|
long k = -1;
|
List idlist = 0;
|
List idlist = 0;
|
ty = newstruct(ENUM, tag);
|
ty = newstruct(ENUM, tag);
|
t = gettok();
|
t = gettok();
|
if (t != ID)
|
if (t != ID)
|
error("expecting an enumerator identifier\n");
|
error("expecting an enumerator identifier\n");
|
while (t == ID) {
|
while (t == ID) {
|
char *id = token;
|
char *id = token;
|
Coordinate s;
|
Coordinate s;
|
if (tsym && tsym->scope == level)
|
if (tsym && tsym->scope == level)
|
error("redeclaration of `%s' previously declared at %w\n",
|
error("redeclaration of `%s' previously declared at %w\n",
|
token, &tsym->src);
|
token, &tsym->src);
|
s = src;
|
s = src;
|
t = gettok();
|
t = gettok();
|
if (t == '=') {
|
if (t == '=') {
|
t = gettok();
|
t = gettok();
|
k = intexpr(0, 0);
|
k = intexpr(0, 0);
|
} else {
|
} else {
|
if (k == inttype->u.sym->u.limits.max.i)
|
if (k == inttype->u.sym->u.limits.max.i)
|
error("overflow in value for enumeration constant `%s'\n", id);
|
error("overflow in value for enumeration constant `%s'\n", id);
|
k++;
|
k++;
|
}
|
}
|
p = install(id, &identifiers, level, level < LOCAL ? PERM : FUNC);
|
p = install(id, &identifiers, level, level < LOCAL ? PERM : FUNC);
|
p->src = s;
|
p->src = s;
|
p->type = ty;
|
p->type = ty;
|
p->sclass = ENUM;
|
p->sclass = ENUM;
|
p->u.value = k;
|
p->u.value = k;
|
idlist = append(p, idlist);
|
idlist = append(p, idlist);
|
n++;
|
n++;
|
if (Aflag >= 2 && n == 128)
|
if (Aflag >= 2 && n == 128)
|
warning("more than 127 enumeration constants in `%t'\n", ty);
|
warning("more than 127 enumeration constants in `%t'\n", ty);
|
if (t != ',')
|
if (t != ',')
|
break;
|
break;
|
t = gettok();
|
t = gettok();
|
if (Aflag >= 2 && t == '}')
|
if (Aflag >= 2 && t == '}')
|
warning("non-ANSI trailing comma in enumerator list\n");
|
warning("non-ANSI trailing comma in enumerator list\n");
|
}
|
}
|
test('}', follow);
|
test('}', follow);
|
ty->type = inttype;
|
ty->type = inttype;
|
ty->size = ty->type->size;
|
ty->size = ty->type->size;
|
ty->align = ty->type->align;
|
ty->align = ty->type->align;
|
ty->u.sym->u.idlist = ltov(&idlist, PERM);
|
ty->u.sym->u.idlist = ltov(&idlist, PERM);
|
ty->u.sym->defined = 1;
|
ty->u.sym->defined = 1;
|
} else if ((p = lookup(tag, types)) != NULL && p->type->op == ENUM) {
|
} else if ((p = lookup(tag, types)) != NULL && p->type->op == ENUM) {
|
ty = p->type;
|
ty = p->type;
|
if (t == ';')
|
if (t == ';')
|
error("empty declaration\n");
|
error("empty declaration\n");
|
} else {
|
} else {
|
error("unknown enumeration `%s'\n", tag);
|
error("unknown enumeration `%s'\n", tag);
|
ty = newstruct(ENUM, tag);
|
ty = newstruct(ENUM, tag);
|
ty->type = inttype;
|
ty->type = inttype;
|
}
|
}
|
if (*tag && xref)
|
if (*tag && xref)
|
use(p, pos);
|
use(p, pos);
|
return ty;
|
return ty;
|
}
|
}
|
|
|
Type typename(void) {
|
Type typename(void) {
|
Type ty = specifier(NULL);
|
Type ty = specifier(NULL);
|
|
|
if (t == '*' || t == '(' || t == '[') {
|
if (t == '*' || t == '(' || t == '[') {
|
ty = dclr(ty, NULL, NULL, 1);
|
ty = dclr(ty, NULL, NULL, 1);
|
if (Aflag >= 1 && !hasproto(ty))
|
if (Aflag >= 1 && !hasproto(ty))
|
warning("missing prototype\n");
|
warning("missing prototype\n");
|
}
|
}
|
return ty;
|
return ty;
|
}
|
}
|
|
|
|
|
