shithub: riscv

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ref: 5664fb3540ae0dccec628720574520122193ab1b
parent: 655d7e26e72a486b783820fe161a7a06eaa92078
author: Sigrid Solveig Haflínudóttir <sigrid@ftrv.se>
date: Fri Mar 17 16:24:30 EDT 2023

cc: add __func__ support

--- a/sys/src/cmd/cc/c99
+++ b/sys/src/cmd/cc/c99
@@ -18,6 +18,7 @@
 11, 30, 31, 32. restrict, inline
 12. Allow declarations anywhere.
 15. for loop declarations
+23. __func__ identifier
 28. structs ending in incomplete type.
 
 Unneeded (already had):
@@ -42,5 +43,4 @@
 5. __STDC_IEC_559__, __STDC_IEC_559_COMPLEX__,
 	__STDC_ISO_10646__
 13. Digraph tokens
-23. __func__ identifier
 
--- a/sys/src/cmd/cc/cc.h
+++ b/sys/src/cmd/cc/cc.h
@@ -583,6 +583,7 @@
 void	edecl(int, Type*, Sym*);
 Type*	fnproto(Node*);
 Type*	fnproto1(Node*);
+void	fndecls(Node*, int);
 void	markdcl(void);
 Type*	paramconv(Type*, int);
 void	pdecl(int, Type*, Sym*);
--- a/sys/src/cmd/cc/cc.y
+++ b/sys/src/cmd/cc/cc.y
@@ -95,11 +95,13 @@
 	pdecl
 	{
 		argmark($2, 1);
+		fndecls($2, 0);
 	}
 	block
 	{
 		Node *n;
 
+		fndecls($2, 1);
 		n = revertdcl();
 		if(n)
 			$6 = new(OLIST, n, $6);
--- a/sys/src/cmd/cc/dcl.c
+++ b/sys/src/cmd/cc/dcl.c
@@ -732,6 +732,30 @@
 }
 
 void
+fndecls(Node *f, int pass)
+{
+	static Sym *funcsym;
+	Node *n;
+
+	if(pass == 0){
+		n = new(ONAME, Z, Z);
+		n->type = typ(TARRAY, garbt(types[TCHAR], BCONSTNT));
+		n->type->width = 0;
+		n->sym = slookup("__func__");
+		n->sym->type = n->type;
+		funcsym = dodecl(adecl, CLOCAL, n->type, n)->sym;
+	}else if(funcsym->aused){
+		n = new(OSTRING, Z, Z);
+		n->cstring = f->left->sym->name;
+		n->type = copytyp(funcsym->type);
+		n->type->width = strlen(n->cstring)+1;
+		n->etype = TARRAY;
+		n->class = CSTATIC;
+		doinit(funcsym, funcsym->type, 0L, n);
+	}
+}
+
+void
 markdcl(void)
 {
 	Decl *d;