diff --git a/include/stdlib.h b/include/stdlib.h
index 40b310f..eee38c7 100644
--- a/include/stdlib.h
+++ b/include/stdlib.h
@@ -54,49 +54,51 @@
 
 #define	RAND_MAX	0x7fff
 
-void	abort();
+void	abort (void);
 int	abs (int);
 int	atexit (void (*)(void));
-double	atof();
-int	atoi();
-long	atol();
+int	atoi (const char *);
+long	atol (const char *);
 void	*calloc (size_t, size_t);
 void	exit (int);
 void	free (void *);
-char	*getenv();
+char	*getenv (const char *);
 long    labs (long);
 void	*malloc (size_t);
 char	*mktemp (char *);
 int     mkstemp (char *);
-void	qsort();
-int	rand();
+void	qsort (void *, size_t, size_t, int (*)(const void *, const void *));
+int	rand (void);
 void	*realloc (void*, size_t);
-void	srand();
-double	strtod();
-long	strtol();
-unsigned long strtoul();
-int	system();
+void	srand (unsigned);
+long	strtol (const char *, char **, int);
+unsigned long strtoul (const char *, char **, int);
+int	system (const char *);
 
 int     putenv (char *string);
 int     setenv (const char *name, const char *value, int overwrite);
 int     unsetenv (const char *name);
 char	*_findenv (const char *name, int *offset);
 
-void	*alloca();
+void	*alloca (size_t size);
 
-int	daemon();
-char	*devname();
-int	getloadavg(unsigned loadavg[], int nelem);
+int	daemon (int, int);
+char	*devname (dev_t dev, mode_t type);
+int	getloadavg (unsigned loadavg[], int nelem);
 
 extern char *suboptarg;			/* getsubopt(3) external variable */
-int	getsubopt();
+int	getsubopt (char **, char **, char **);
 
 long	random (void);
 char	*setstate (char *);
 void	srandom (unsigned);
 
-char *ecvt (double, int, int *, int *);
-char *fcvt (double, int, int *, int *);
-char *gcvt (double, int, char *);
+#ifndef __SMALLER_C__
+double	atof (const char *);
+double	strtod (const char *, char **);
+char    *ecvt (double, int, int *, int *);
+char    *fcvt (double, int, int *, int *);
+char    *gcvt (double, int, char *);
+#endif
 
 #endif /* _STDLIB_H_ */
diff --git a/src/cmd/as/as.c b/src/cmd/as/as.c
index a2cccf5..9496577 100644
--- a/src/cmd/as/as.c
+++ b/src/cmd/as/as.c
@@ -1594,17 +1594,13 @@ foff16: expr_flags = 0;
             /* Test whether the immediate is in valid range
              * for the opcode. */
             switch (opcode & 0xfc000000) {
-            case 0x20000000:                    // addi
-            case 0x24000000:                    // addiu
-            case 0x28000000:                    // slti
-            case 0x2c000000:                    // sltiu
+            default:                    /* addi, addiu, slti, sltiu, lw, sw */
                 /* 16-bit signed value. */
                 valid_range = (offset >= -0x8000) || (offset <= 0x7fff);
                 break;
-            case 0x30000000:                    // andi
-            case 0x34000000:                    // ori
-            case 0x38000000:                    // xori
-            default:
+            case 0x30000000:            /* andi */
+            case 0x34000000:            /* ori */
+            case 0x38000000:            /* xori */
                 /* 16-bit unsigned value. */
                 valid_range = (offset <= 0xffff);
                 break;
diff --git a/src/libc/gen/getenv.c b/src/libc/gen/getenv.c
index 09f721a..273cb1b 100644
--- a/src/libc/gen/getenv.c
+++ b/src/libc/gen/getenv.c
@@ -14,7 +14,7 @@
  */
 char *
 getenv(name)
-	char *name;
+	const char *name;
 {
 	int	offset;
 	char	*_findenv();
diff --git a/src/libc/stdlib/getsubopt.c b/src/libc/stdlib/getsubopt.c
index bfe64c3..af9030f 100644
--- a/src/libc/stdlib/getsubopt.c
+++ b/src/libc/stdlib/getsubopt.c
@@ -43,7 +43,8 @@ char *suboptarg;
 
 int
 getsubopt(optionp, tokens, valuep)
-	register char **optionp, **valuep;
+	register char **optionp;
+	register char **valuep;
 	register char **tokens;
 {
 	register int cnt;
diff --git a/src/libc/stdlib/strtol.c b/src/libc/stdlib/strtol.c
index 2d39de4..1b4601a 100644
--- a/src/libc/stdlib/strtol.c
+++ b/src/libc/stdlib/strtol.c
@@ -43,11 +43,11 @@
  */
 long
 strtol(nptr, endptr, base)
-	char *nptr;
+	const char *nptr;
 	char **endptr;
 	register int base;
 {
-	register char *s = nptr;
+	register const char *s = nptr;
 	register unsigned long acc;
 	register int c;
 	register unsigned long cutoff;
diff --git a/src/libc/stdlib/strtoul.c b/src/libc/stdlib/strtoul.c
index 93e16d2..48f4989 100644
--- a/src/libc/stdlib/strtoul.c
+++ b/src/libc/stdlib/strtoul.c
@@ -43,11 +43,11 @@
  */
 unsigned long
 strtoul(nptr, endptr, base)
-	char *nptr;
+	const char *nptr;
 	char **endptr;
 	register int base;
 {
-	register char *s = nptr;
+	register const char *s = nptr;
 	register unsigned long acc;
 	register int c;
 	register unsigned long cutoff;
diff --git a/tools/virtualmips/.gitignore b/tools/virtualmips/.gitignore
index 0c79fa8..cba2dbe 100644
--- a/tools/virtualmips/.gitignore
+++ b/tools/virtualmips/.gitignore
@@ -1,2 +1,3 @@
 .deps
 pic32
+pic32-log.txt