jdk

1
/*
2
 * Copyright (c) 2022 SAP SE. All rights reserved.
3
 * Copyright (c) 2022, 2024, Oracle and/or its affiliates. All rights reserved.
4
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5
 *
6
 * This code is free software; you can redistribute it and/or modify it
7
 * under the terms of the GNU General Public License version 2 only, as
8
 * published by the Free Software Foundation.
9
 *
10
 * This code is distributed in the hope that it will be useful, but WITHOUT
11
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13
 * version 2 for more details (a copy is included in the LICENSE file that
14
 * accompanied this code).
15
 *
16
 * You should have received a copy of the GNU General Public License version
17
 * 2 along with this work; if not, write to the Free Software Foundation,
18
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19
 *
20
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21
 * or visit www.oracle.com if you need additional information or have any
22
 * questions.
23
 *
24
 */
25

26
#include "defs.S.inc"
27

28
    # Support for int SafeFetch32(int* address, int defaultval);
29
    #
30
    #  x0 : address
31
    #  w1 : defaultval
32

33
    # needed to align function start to 4 byte
34
    .align  6
35
DECLARE_FUNC(SafeFetch32_impl):
36
DECLARE_FUNC(_SafeFetch32_fault):
37
    ldr      w0, [x0]
38
    ret
39
DECLARE_FUNC(_SafeFetch32_continuation):
40
    mov      x0, x1
41
    ret
42

43
    # Support for intptr_t SafeFetchN(intptr_t* address, intptr_t defaultval);
44
    #
45
    #  x1 : address
46
    #  x0 : defaultval
47

48
    .align  6
49
DECLARE_FUNC(SafeFetchN_impl):
50
DECLARE_FUNC(_SafeFetchN_fault):
51
    ldr      x0, [x0]
52
    ret
53
DECLARE_FUNC(_SafeFetchN_continuation):
54
    mov      x0, x1
55
    ret
56