Use safer but slower approach to copying the string.

2012-07-02 20:17:03 -04:00 · 2012-07-02 20:17:03 -04:00 · 7f7b659ec5
commit 7f7b659ec5
parent 29291c8c92
1 changed files with 4 additions and 3 deletions
--- a/src/system/kernel/arch/x86/arch_x86.S
+++ b/src/system/kernel/arch/x86/arch_x86.S
@ -286,9 +286,10 @@ FUNCTION(arch_cpu_user_strlcpy):
 	cld
 .L_user_strlcpy_copy_loop:
 	/* move data by bytes */
-	movsb
-	cmpb $0,-1(%esi)
-	je .L_user_strlcpy_source_done
+	lodsb
+	stosb
+	test %al,%al
+	jz .L_user_strlcpy_source_done
 	loop .L_user_strlcpy_copy_loop

 	/* null terminate string */