diff options
Diffstat (limited to 'bridges/source/cpp_uno/gcc3_linux_arm/armhelper.S')
| -rw-r--r-- | bridges/source/cpp_uno/gcc3_linux_arm/armhelper.S | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/gcc3_linux_arm/armhelper.S b/bridges/source/cpp_uno/gcc3_linux_arm/armhelper.S new file mode 100644 index 000000000000..27148dc0278c --- /dev/null +++ b/bridges/source/cpp_uno/gcc3_linux_arm/armhelper.S @@ -0,0 +1,52 @@ +@ ARM support code for OpenOffice C++/UNO bridging +@ +@ Written by Peter Naulls <peter@chocky.org> +@ Modified by Caolan McNamara <caolanm@redhat.com> +@ Fixed by Michael Casadevall <mcasadevall@kubuntu.org> + +#ifdef __ARM_EABI__ +# define UNWIND +#else +# define UNWIND @ +#endif + +@ If the VFP ABI variant (armhf in Debian/Ubuntu) is used, an additional extra 64 bytes +@ are taken up on the stack (the equivalent of the 8 double precision VFP registers) + +#ifdef __ARM_PCS_VFP +# define PAD 80 +# define DISCARDED 84 +#else +# define PAD 16 +# define DISCARDED 20 +#endif + + .file "armhelper.s" + .text + .align 4 + .global privateSnippetExecutor + .type privateSnippetExecutor, %function +privateSnippetExecutor: + UNWIND .fnstart @ start of unwinder entry + + stmfd sp!, {r0-r3} @ follow other parameters on stack + mov r0, ip @ r0 points to functionoffset/vtable + mov r1, sp @ r1 points to this and params +#ifdef __ARM_PCS_VFP + vpush {d0-d7} @ floating point parameter on stack +#endif + UNWIND .pad #PAD @ throw this data away on exception + @ (see cppuno.cxx:codeSnippet()) + stmfd sp!, {r4,lr} @ save return address + @ (r4 pushed to preserve stack alignment) + UNWIND .save {r4,lr} @ restore these regs on exception + + bl cpp_vtable_call(PLT) + + add sp, sp, #4 @ no need to restore r4 (we didn't touch it) + ldr pc, [sp], #DISCARDED @ return, discarding function arguments + + UNWIND .fnend @ end of unwinder entry + + .size privateSnippetExecutor, . - privateSnippetExecutor + .section .note.GNU-stack,"",%progbits |