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-rw-r--r--sysdeps/unix/sysv/linux/s390/mmap.S60
1 files changed, 60 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/mmap.S b/sysdeps/unix/sysv/linux/s390/mmap.S
new file mode 100644
index 0000000000..0ba58ccf82
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/mmap.S
@@ -0,0 +1,60 @@
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdep.h>
+
+	.text
+
+ENTRY(__mmap)
+	/* Save registers and setup stack frame.  */
+	stm     %r6,%r15,24(%r15)
+	lr      %r1,%r15
+	l       %r0,4(0,%r15)           /* load eos */
+	ahi     %r15,-120               /* buy stack space */
+	st      %r1,0(0,%r15)           /* store back chain */
+	st      %r0,4(0,%r15)           /* store eos */
+
+	/* Store parameters on stack, because old_mmap
+	 * takes only one parameter: a pointer to the parameter area
+	 */
+	mvc     0x74(4,%r15),216(%r15)  /* move 'offset'  */
+	st      %r6,0x70(0,%r15)        /* store 'fd'     */
+	st      %r5,0x6C(0,%r15)        /* store 'flags'  */
+	st      %r4,0x68(0,%r15)        /* store 'prot'   */
+	st      %r3,0x64(0,%r15)        /* store 'length' */
+	st      %r2,0x60(0,%r15)        /* store 'start'  */
+
+	la      %r2,0x60(0,%r15)        /* load address of parameter list */
+	/* Do the system call trap.  */
+	svc     SYS_ify(mmap)
+
+	l       %r15,0(0,%r15)          /* load back chain */
+	lm      %r6,%r15,24(%r15)       /* load registers */
+
+	/* check gpr 2 for error */
+	lhi     %r0,-4096
+	clr     %r2,%r0
+	jnl     SYSCALL_ERROR_LABEL
+
+	/* Successful; return the syscall's value.  */
+	br      %r14
+
+PSEUDO_END (__mmap)
+
+weak_alias (__mmap, mmap)