;
; Copyright (c) 2022 SAP SE. All rights reserved.
; Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
; DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
;
; This code is free software; you can redistribute it and/or modify it
; under the terms of the GNU General Public License version 2 only, as
; published by the Free Software Foundation.
;
; This code 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 General Public License
; version 2 for more details (a copy is included in the LICENSE file that
; accompanied this code).
;
; You should have received a copy of the GNU General Public License version
; 2 along with this work; if not, write to the Free Software Foundation,
; Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
;
; Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
; or visit www.oracle.com if you need additional information or have any
; questions.
;

    ; Support for int SafeFetch32(int* address, int defaultval);
    ;
    ;  x0 : address
    ;  w1 : defaultval

    ; needed to align function start to 4 byte
    ALIGN  4
    EXPORT _SafeFetch32_fault
    EXPORT _SafeFetch32_continuation
    EXPORT SafeFetch32_impl
    AREA safefetch_text, CODE

SafeFetch32_impl
_SafeFetch32_fault
    ldr w0, [x0]
    ret

_SafeFetch32_continuation
    mov      x0, x1
    ret

    ; Support for intptr_t SafeFetchN(intptr_t* address, intptr_t defaultval);
    ;
    ;  x0 : address
    ;  x1 : defaultval

    ALIGN  4
    EXPORT _SafeFetchN_fault
    EXPORT _SafeFetchN_continuation
    EXPORT SafeFetchN_impl

SafeFetchN_impl
_SafeFetchN_fault
    ldr      x0, [x0]
    ret

_SafeFetchN_continuation
    mov      x0, x1
    ret

    END