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/* -*- Mode: asm; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
.global SharedStub
/*
in the frame for the function that called SharedStub are the
rest of the parameters we need
*/
SharedStub:
! we don't create a new frame yet, but work within the frame of the calling
! function to give ourselves the other parameters we want
mov %o0, %o1 ! shuffle the index up to 2nd place
mov %i0, %o0 ! the original 'this'
add %fp, 0x7ff + 136, %o2 ! previous stack top adjusted to the first argument slot (beyond 'this')
! save off the original incoming parameters that arrived in
! registers, the ABI guarantees the space for us to do this
stx %i1, [%fp + 0x7ff + 136]
stx %i2, [%fp + 0x7ff + 144]
stx %i3, [%fp + 0x7ff + 152]
stx %i4, [%fp + 0x7ff + 160]
stx %i5, [%fp + 0x7ff + 168]
! now we can build our own stack frame
save %sp,-(128 + 64),%sp ! room for the register window and
! struct pointer, rounded up to 0 % 64
! our function now appears to have been called
! as SharedStub(nsISupports* that, uint32_t index, uint32_t* args)
! so we can just copy these through
mov %i0, %o0
mov %i1, %o1
mov %i2, %o2
call PrepareAndDispatch
nop
mov %o0,%i0 ! propagate return value
b .LL1
nop
.LL1:
ret
restore
.size SharedStub, .-SharedStub
.type SharedStub, #function
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