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