[libc] Rewrite strtoul()

The implementation of strtoul() has a partially unknown provenance.
Rewrite this code to avoid potential licensing uncertainty.

Since we now use -ffunction-sections, there is no need to place
strtoull() in a separate file from strtoul().

Signed-off-by: Michael Brown <mcb30@ipxe.org>

1 files changed, 3 insertions, 25 deletions

diff --git a/src/include/stdlib.h b/src/include/stdlib.h
index 2951522b8..819b87b39 100644
--- a/src/include/stdlib.h
+++ b/src/include/stdlib.h
@@ -13,31 +13,9 @@ FILE_LICENCE ( GPL2_OR_LATER );
  ****************************************************************************
  */
 
-static inline int strtoul_base ( const char **pp, int base )
-{
-	const char *p = *pp;
-
-	if ( base == 0 ) {
-		base = 10;
-		if ( *p == '0' ) {
-			p++;
-			base = 8;
-			if ( ( *p | 0x20 ) == 'x' ) {
-				p++;
-				base = 16;
-			}
-		}
-	}
-
-	*pp = p;
-
-	return base;
-}
-
-extern unsigned int strtoul_charval ( unsigned int charval );
-extern unsigned long strtoul ( const char *p, char **endp, int base );
-extern unsigned long long strtoull ( const char *p, char **endp, int base );
-
+extern unsigned long strtoul ( const char *string, char **endp, int base );
+extern unsigned long long strtoull ( const char *string, char **endp,
+				     int base );
 
 /*****************************************************************************
  *