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Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/mmap.S')
-rw-r--r--sysdeps/unix/sysv/linux/i386/mmap.S11
1 files changed, 7 insertions, 4 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/mmap.S b/sysdeps/unix/sysv/linux/i386/mmap.S
index 0397f841f1..46d26125a5 100644
--- a/sysdeps/unix/sysv/linux/i386/mmap.S
+++ b/sysdeps/unix/sysv/linux/i386/mmap.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -36,19 +36,22 @@ ENTRY (__mmap)
 	pushl %esi
 	pushl %edi
 
-	movl $SYS_ify(mmap2), %eax	/* System call number in %eax.  */
-
 	movl 20(%esp), %ebx
 	movl 24(%esp), %ecx
 	movl 28(%esp), %edx
 	movl 32(%esp), %esi
 	movl 36(%esp), %edi
 	movl 40(%esp), %ebp
+	testl $0x3ff, %ebp
+	movl $-EINVAL, %eax
+	jne L(skip)
 	shrl $12, %ebp			/* mmap2 takes the offset in pages.  */
 
+	movl $SYS_ify(mmap2), %eax	/* System call number in %eax.  */
+
 	/* Do the system call trap.  */
 	int $0x80
-
+L(skip):
 	/* Restore registers.  */
 	popl %edi
 	popl %esi