Import changeset

strings/strlen.c

@@ -0,0 +1,50 @@
+/*  File   : strlen.c
+    Author : Richard A. O'Keefe. / Monty
+	     Michael Widenius;	ifdef MC68000
+    Updated: 1986-11-30
+    Defines: strlen()
+
+    strlen(s) returns the number of characters in s, that is, the number
+    of non-NUL characters found before the closing NULEosCh.  Note: some
+    non-standard C compilers for 32-bit machines take int to be 16 bits,
+    either put up with short strings or change int  to	long  throughout
+    this package.  Better yet, BOYCOTT such shoddy compilers.
+    Beware: the asm version works only if strlen(s) < 65536.
+*/
+
+#include "strings.h"
+
+#if VaxAsm
+
+size_s strlen(char *s)
+{
+ asm("locc  $0,$65535,*4(ap)");
+ asm("subl3 r0,$65535,r0");
+}
+
+#else
+#if defined(MC68000) && defined(DS90)
+
+size_s strlen(char *s)
+{
+asm("		movl	4(a7),a0	");
+asm("		movl	a0,a1		");
+asm(".L4:	tstb	(a0)+		");
+asm("		jne	.L4		");
+asm("		movl	a0,d0		");
+asm("		subl	a1,d0		");
+asm("		subql	#1,d0		");
+}
+#else
+
+size_s strlen(register char *s)
+{
+  register char *startpos;
+
+  startpos = s;
+  while (*s++);
+  return ((size_s) (s-startpos-1));
+}
+
+#endif
+#endif