xref: /AOO41X/main/bridges/source/cpp_uno/gcc3_linux_arm/armhelper.S (revision b5da552ccefc4034e06a43bfae43fb8a8b64a7ad)
1@
2@   Licensed to the Apache Software Foundation (ASF) under one
3@   or more contributor license agreements.  See the NOTICE file
4@   distributed with this work for additional information
5@   regarding copyright ownership.  The ASF licenses this file
6@   to you under the Apache License, Version 2.0 (the
7@   "License"); you may not use this file except in compliance
8@   with the License.  You may obtain a copy of the License at
9@
10@     http://www.apache.org/licenses/LICENSE-2.0
11@
12@   Unless required by applicable law or agreed to in writing,
13@   software distributed under the License is distributed on an
14@   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15@   KIND, either express or implied.  See the License for the
16@   specific language governing permissions and limitations
17@   under the License.
18@
19
20@ ARM support code for OpenOffice C++/UNO bridging
21@
22@ Written by Peter Naulls <peter@chocky.org>
23@ Modified by Caolan McNamara <caolanm@redhat.com>
24@ Fixed by Michael Casadevall <mcasadevall@kubuntu.org>
25
26#ifdef __ARM_EABI__
27#  define UNWIND
28#else
29#  define UNWIND @
30#endif
31
32    .file   "armhelper.s"
33    .text
34    .align  4
35    .global privateSnippetExecutor
36    .type privateSnippetExecutor, %function
37privateSnippetExecutor:
38    UNWIND .fnstart            @ start of unwinder entry
39
40    stmfd sp!, {r0-r3}         @ follow other parameters on stack
41    UNWIND .pad  #16           @ throw this data away on exception
42    mov   r0, ip               @ r0 points to functionoffset/vtable
43    mov   r1, sp               @ r1 points to this and params
44                               @ (see cppuno.cxx:codeSnippet())
45    stmfd sp!, {r4,lr}         @ save return address
46                               @ (r4 pushed to preserve stack alignment)
47    UNWIND .save {r4,lr}       @ restore these regs on exception
48
49    bl    cpp_vtable_call(PLT)
50
51    add   sp, sp, #4           @ no need to restore r4 (we didn't touch it)
52    ldr   pc, [sp], #20        @ return, discarding function arguments
53
54    UNWIND .fnend              @ end of unwinder entry
55
56    .size privateSnippetExecutor, . - privateSnippetExecutor
57        .section        .note.GNU-stack,"",%progbits
58