Quake-III-Arena

symbolic.c (11511B)

---

 #include <time.h>
 #include <ctype.h>
 #include "c.h"
 
 #define I(f) s_##f
 
 static Node *tail;
 static int off, maxoff, uid = 0, verbose = 0, html = 0;
 
 static const char *yyBEGIN(const char *tag) {
 	if (html)
 		print("<%s>", tag);
 	return tag;
 }
 
 static void yyEND(const char *tag) {
 	if (html)
 		print("</%s>", tag);
 	if (isupper(*tag))
 		print("\n");
 }
 
 #define BEGIN(tag) do { const char *yytag=yyBEGIN(#tag);
 #define END yyEND(yytag); } while (0)
 #define ITEM BEGIN(li)
 #define START BEGIN(LI)
 #define ANCHOR(attr,code) do { const char *yytag="a"; if (html) { printf("<a " #attr "=\""); code; print("\">"); }
 #define NEWLINE print(html ? "<br>\n" : "\n")
 
 static void emitCoord(Coordinate src) {
 	if (src.file && *src.file) {
 		ANCHOR(href,print("%s", src.file)); print("%s", src.file); END;
 		print(":");
 	}
 	print("%d.%d", src.y, src.x);
 }
 
 static void emitString(int len, const char *s) {
 	for ( ; len-- > 0; s++)
 		if (*s == '&' && html)
 			print("&amp;");
 		else if (*s == '<' && html)
 			print("&lt;");
 		else if (*s == '>' && html)
 			print("&lt;");
 		else if (*s == '"' || *s == '\\')
 			print("\\%c", *s);
 		else if (*s >= ' ' && *s < 0177)
 			print("%c", *s);
 		else
 			print("\\%d%d%d", (*s>>6)&3, (*s>>3)&7, *s&7);
 }
 
 static void emitSymRef(Symbol p) {
 	(*IR->defsymbol)(p);
 	ANCHOR(href,print("#%s", p->x.name)); BEGIN(code); print("%s", p->name); END; END;
 }
 
 static void emitSymbol(Symbol p) {
 	(*IR->defsymbol)(p);
 	ANCHOR(name,print("%s", p->x.name)); BEGIN(code); print("%s", p->name); END; END;
 	BEGIN(ul);
 #define xx(field,code) ITEM; if (!html) print(" "); print(#field "="); code; END
 	if (verbose && (src.y || src.x))
 		xx(src,emitCoord(p->src));
 	xx(type,print("%t", p->type));
 	xx(sclass,print("%k", p->sclass));
 	switch (p->scope) {
 	case CONSTANTS: xx(scope,print("CONSTANTS")); break;
 	case LABELS:    xx(scope,print("LABELS"));    break;
 	case GLOBAL:    xx(scope,print("GLOBAL"));    break;
 	case PARAM:     xx(scope,print("PARAM"));     break;
 	case LOCAL:     xx(scope,print("LOCAL"));     break;
 	default:
 		if (p->scope > LOCAL)
 			xx(scope,print("LOCAL+%d", p->scope-LOCAL));
 		else
 			xx(scope,print("%d", p->scope));
 	}
 	if (p->scope >= PARAM && p->sclass != STATIC)
 		xx(offset,print("%d", p->x.offset));
 	xx(ref,print("%f", p->ref));
 	if (p->temporary && p->u.t.cse)
 		xx(u.t.cse,print("%p", p->u.t.cse));
 	END;
 #undef xx
 }
 
 /* address - initialize q for addressing expression p+n */
 static void I(address)(Symbol q, Symbol p, long n) {
 	q->name = stringf("%s%s%D", p->name, n > 0 ? "+" : "", n);
 	(*IR->defsymbol)(q);
 	START; print("address "); emitSymbol(q); END;
 }
 
 /* blockbeg - start a block */
 static void I(blockbeg)(Env *e) {
 	e->offset = off;
 	START; print("blockbeg off=%d", off); END;
 }
 
 /* blockend - start a block */
 static void I(blockend)(Env *e) {
 	if (off > maxoff)
 		maxoff = off;
 	START; print("blockend off=%d", off); END;
 	off = e->offset;
 }
 
 /* defaddress - initialize an address */
 static void I(defaddress)(Symbol p){
 	START; print("defaddress "); emitSymRef(p); END;
 }
 
 /* defconst - define a constant */
 static void I(defconst)(int suffix, int size, Value v) {
 	START;
 	print("defconst ");
 	switch (suffix) {
 	case I:
 		print("int.%d ", size);
 		BEGIN(code);
 		if (size > sizeof (int))
 			print("%D", v.i);
 		else
 			print("%d", (int)v.i);
 		END;
 		break;
 	case U:
 		print("unsigned.%d ", size);
 		BEGIN(code);
 		if (size > sizeof (unsigned))
 			print("%U", v.u);
 		else
 			print("%u", (unsigned)v.u);
 		END;
 		break;
 	case P: print("void*.%d ", size); BEGIN(code); print("%p", v.p); END; break;
 	case F: print("float.%d ", size); BEGIN(code); print("%g", (double)v.d); END; break;
 	default: assert(0);
 	}
 	END;
 }
 
 /* defstring - emit a string constant */
 static void I(defstring)(int len, char *s) {
 	START; print("defstring ");
 	BEGIN(code); print("\""); emitString(len, s); print("\""); END;
 	END;
 }
 
 /* defsymbol - define a symbol: initialize p->x */
 static void I(defsymbol)(Symbol p) {
 	if (p->x.name == NULL)
 		p->x.name = stringd(++uid);
 }
 
 /* emit - emit the dags on list p */
 static void I(emit)(Node p){
 	ITEM;
 	if (!html)
 		print(" ");
 	for (; p; p = p->x.next) {
 		if (p->op == LABEL+V) {
 			assert(p->syms[0]);
 			ANCHOR(name,print("%s", p->syms[0]->x.name));
 			BEGIN(code); print("%s", p->syms[0]->name); END;
 			END;
 			print(":");
 		} else {
 			int i;
 			if (p->x.listed) {
 				BEGIN(strong); print("%d", p->x.inst); END; print("'");
 				print(" %s", opname(p->op));
 			} else
 				print("%d. %s", p->x.inst, opname(p->op));
 			if (p->count > 1)
 				print(" count=%d", p->count);
 			for (i = 0; i < NELEMS(p->kids) && p->kids[i]; i++)
 				print(" #%d", p->kids[i]->x.inst);
 			if (generic(p->op) == CALL && p->syms[0] && p->syms[0]->type)
 				print(" {%t}", p->syms[0]->type);
 			else
 				for (i = 0; i < NELEMS(p->syms) && p->syms[i]; i++) {
 					print(" ");
 					if (p->syms[i]->scope == CONSTANTS)
 						print(p->syms[i]->name);
 					else
 						emitSymRef(p->syms[i]);
 				}
 		}
 		NEWLINE;
 	}
 	END;
 }
 
 /* export - announce p as exported */
 static void I(export)(Symbol p) {
 	START; print("export "); emitSymRef(p); END;
 }
 
 /* function - generate code for a function */
 static void I(function)(Symbol f, Symbol caller[], Symbol callee[], int ncalls) {
 	int i;
 
 	(*IR->defsymbol)(f);
 	off = 0;
 	for (i = 0; caller[i] && callee[i]; i++) {
 		off = roundup(off, caller[i]->type->align);
 		caller[i]->x.offset = callee[i]->x.offset = off;
 		off += caller[i]->type->size;
 	}
 	if (!html) {
 		print("function ");
 		emitSymbol(f);
 		print(" ncalls=%d\n", ncalls);
 		for (i = 0; caller[i]; i++)
 			START; print("caller "); emitSymbol(caller[i]); END;
 		for (i = 0; callee[i]; i++)
 			START; print("callee "); emitSymbol(callee[i]); END;
 	} else {
 		START;
 		print("function");
 		BEGIN(UL);
 #define xx(field,code) ITEM; print(#field "="); code; END
 		xx(f,emitSymbol(f));
 		xx(ncalls,print("%d", ncalls));
 		if (caller[0]) {
 			ITEM; print("caller"); BEGIN(OL);
 			for (i = 0; caller[i]; i++)
 				ITEM; emitSymbol(caller[i]); END;
 			END; END;
 			ITEM; print("callee"); BEGIN(OL);
 			for (i = 0; callee[i]; i++)
 				ITEM; emitSymbol(callee[i]); END;
 			END; END;
 		} else {
 			xx(caller,BEGIN(em); print("empty"); END);
 			xx(callee,BEGIN(em); print("empty"); END);
 		}
 		END;
 		END;
 	}
 	maxoff = off = 0;
 	gencode(caller, callee);
 	if (html)
 		START; print("emitcode"); BEGIN(ul); emitcode(); END; END;
 	else
 		emitcode();
 	START; print("maxoff=%d", maxoff); END;
 #undef xx
 }
 
 /* visit - generate code for *p */
 static int visit(Node p, int n) {
 	if (p && p->x.inst == 0) {
 		p->x.inst = ++n;
 		n = visit(p->kids[0], n);
 		n = visit(p->kids[1], n);
 		*tail = p;
 		tail = &p->x.next;
 	}
 	return n;
 }
 
 /* gen0 - generate code for the dags on list p */
 static Node I(gen)(Node p) {
 	int n;
 	Node nodelist;
 
 	tail = &nodelist;
 	for (n = 0; p; p = p->link) {
 		switch (generic(p->op)) {	/* check for valid forest */
 		case CALL:
 			assert(IR->wants_dag || p->count == 0);
 			break;
 		case ARG:
 		case ASGN: case JUMP: case LABEL: case RET:
 		case EQ: case GE: case GT: case LE: case LT: case NE:
 			assert(p->count == 0);
 			break;
 		case INDIR:
 			assert(IR->wants_dag && p->count > 0);
 			break;
 		default:
 			assert(0);
 		}
 		check(p);
 		p->x.listed = 1;
 		n = visit(p, n);
 	}
 	*tail = 0;
 	return nodelist;
 }
 
 /* global - announce a global */
 static void I(global)(Symbol p) {
 	START; print("global "); emitSymbol(p); END;
 }
 
 /* import - import a symbol */
 static void I(import)(Symbol p) {
 	START; print("import "); emitSymRef(p); END;
 }
 
 /* local - local variable */
 static void I(local)(Symbol p) {
 	if (p->temporary)
 		p->name = stringf("t%s", p->name);
 	(*IR->defsymbol)(p);
 	off = roundup(off, p->type->align);
 	p->x.offset = off;
 	off += p->type->size;
 	START; print(p->temporary ? "temporary " : "local "); emitSymbol(p); END;
 }
 
 /* progbeg - beginning of program */
 static void I(progbeg)(int argc, char *argv[]) {
 	int i;
 
 	for (i = 1; i < argc; i++)
 		if (strcmp(argv[i], "-v") == 0)
 			verbose++;
 		else if (strcmp(argv[i], "-html") == 0)
 			html++;
 	if (html) {
 		print("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2 Final//EN\">\n");
 		print("<html>");
 		BEGIN(head);
 		if (firstfile && *firstfile)
 			BEGIN(title); emitString(strlen(firstfile), firstfile);	END;
 		print("<link rev=made href=\"mailto:drh@microsoft.com\">\n");
 		END;
 		print("<body>\n");
 		if (firstfile && *firstfile)
 			BEGIN(h1); emitString(strlen(firstfile), firstfile); END;
 		BEGIN(P); BEGIN(em);
 		print("Links lead from uses of identifiers and labels to their definitions.");
 		END; END;
 		print("<ul>\n");
 		START;
 		print("progbeg");
 		BEGIN(ol);
 		for (i = 1; i < argc; i++) {
 			ITEM;
 			BEGIN(code); print("\""); emitString(strlen(argv[i]), argv[i]); print("\""); END;
 			END;
 		}
 		END;
 		END;
 	}
 }
 
 /* progend - end of program */
 static void I(progend)(void) {
 	START; print("progend"); END;
 	if (html) {
 		time_t t;
 		print("</ul>\n");
 		time(&t);
 		print("<hr><address>%s</address>\n", ctime(&t));
 		print("</body></html>\n");
 	}
 }
 
 /* segment - switch to segment s */
 static void I(segment)(int s) {
 	START; print("segment %s", &"text\0bss\0.data\0lit\0.sym\0."[5*s-5]); END;
 }
 
 /* space - initialize n bytes of space */
 static void I(space)(int n) {
 	START; print("space %d", n); END;
 }
 
 static void I(stabblock)(int brace, int lev, Symbol *p) {}
 
 /* stabend - finalize stab output */
 static void I(stabend)(Coordinate *cp, Symbol p, Coordinate **cpp, Symbol *sp, Symbol *stab) {
 	int i;
 
 	if (p)
 		emitSymRef(p);
 	print("\n");
 	if (cpp && sp)
 		for (i = 0; cpp[i] && sp[i]; i++) {
 			print("%w.%d: ", cpp[i], cpp[i]->x);
 			emitSymRef(sp[i]);
 			print("\n");
 		}
 }
 
 static void I(stabfend)(Symbol p, int lineno) {}
 static void I(stabinit)(char *file, int argc, char *argv[]) {}
 
 /* stabline - emit line number information for source coordinate *cp */
 static void I(stabline)(Coordinate *cp) {
 	if (cp->file)
 		print("%s:", cp->file);
 	print("%d.%d:\n", cp->y, cp->x);
 }
 
 static void I(stabsym)(Symbol p) {}
 static void I(stabtype)(Symbol p) {}
 
 Interface symbolicIR = {
 	1, 1, 0,	/* char */
 	2, 2, 0,	/* short */
 	4, 4, 0,	/* int */
 	4, 4, 0,	/* long */
 	4, 4, 0,	/* long long */
 	4, 4, 1,	/* float */
 	8, 8, 1,	/* double */
 	8, 8, 1,	/* long double */
 	4, 4, 0,	/* T* */
 	0, 4, 0,	/* struct */
 	0,		/* little_endian */
 	0,		/* mulops_calls */
 	0,		/* wants_callb */
 	1,		/* wants_argb */
 	1,		/* left_to_right */
 	1,		/* wants_dag */
 	0,		/* unsigned_char */
 	I(address),
 	I(blockbeg),
 	I(blockend),
 	I(defaddress),
 	I(defconst),
 	I(defstring),
 	I(defsymbol),
 	I(emit),
 	I(export),
 	I(function),
 	I(gen),
 	I(global),
 	I(import),
 	I(local),
 	I(progbeg),
 	I(progend),
 	I(segment),
 	I(space),
 	I(stabblock),
 	I(stabend),
 	I(stabfend),
 	I(stabinit),
 	I(stabline),
 	I(stabsym),
 	I(stabtype)
 };
 
 Interface symbolic64IR = {
 	1, 1, 0,	/* char */
 	2, 2, 0,	/* short */
 	4, 4, 0,	/* int */
 	8, 8, 0,	/* long */
 	8, 8, 0,	/* long long */
 	4, 4, 1,	/* float */
 	8, 8, 1,	/* double */
 	8, 8, 1,	/* long double */
 	8, 8, 0,	/* T* */
 	0, 1, 0,	/* struct */
 	1,		/* little_endian */
 	0,		/* mulops_calls */
 	0,		/* wants_callb */
 	1,		/* wants_argb */
 	1,		/* left_to_right */
 	1,		/* wants_dag */
 	0,		/* unsigned_char */
 	I(address),
 	I(blockbeg),
 	I(blockend),
 	I(defaddress),
 	I(defconst),
 	I(defstring),
 	I(defsymbol),
 	I(emit),
 	I(export),
 	I(function),
 	I(gen),
 	I(global),
 	I(import),
 	I(local),
 	I(progbeg),
 	I(progend),
 	I(segment),
 	I(space),
 	I(stabblock),
 	I(stabend),
 	I(stabfend),
 	I(stabinit),
 	I(stabline),
 	I(stabsym),
 	I(stabtype)
 };