xref: /trunk/main/bridges/source/cpp_uno/gcc3_linux_arm/armhelper.S (revision cdf0e10c4e3984b49a9502b011690b615761d4a3)
1@ ARM support code for OpenOffice C++/UNO bridging
2@
3@ Written by Peter Naulls <peter@chocky.org>
4@ Modified by Caolan McNamara <caolanm@redhat.com>
5@ Fixed by Michael Casadevall <mcasadevall@kubuntu.org>
6
7#ifdef __ARM_EABI__
8#  define UNWIND
9#else
10#  define UNWIND @
11#endif
12
13    .file   "armhelper.s"
14    .text
15    .align  4
16    .global privateSnippetExecutor
17    .type privateSnippetExecutor, %function
18privateSnippetExecutor:
19    UNWIND .fnstart            @ start of unwinder entry
20
21    stmfd sp!, {r0-r3}         @ follow other parameters on stack
22    UNWIND .pad  #16           @ throw this data away on exception
23    mov   r0, ip               @ r0 points to functionoffset/vtable
24    mov   r1, sp               @ r1 points to this and params
25                               @ (see cppuno.cxx:codeSnippet())
26    stmfd sp!, {r4,lr}         @ save return address
27                               @ (r4 pushed to preserve stack alignment)
28    UNWIND .save {r4,lr}       @ restore these regs on exception
29
30    bl    cpp_vtable_call(PLT)
31
32    add   sp, sp, #4           @ no need to restore r4 (we didn't touch it)
33    ldr   pc, [sp], #20        @ return, discarding function arguments
34
35    UNWIND .fnend              @ end of unwinder entry
36
37    .size privateSnippetExecutor, . - privateSnippetExecutor
38        .section        .note.GNU-stack,"",%progbits
39