1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_asm_sparc64_openbsd.s Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,50 @@
1.4 +/* -*- Mode: asm; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + *
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 + .global SharedStub
1.11 +
1.12 +/*
1.13 + in the frame for the function that called SharedStub are the
1.14 + rest of the parameters we need
1.15 +
1.16 +*/
1.17 +
1.18 +SharedStub:
1.19 +! we don't create a new frame yet, but work within the frame of the calling
1.20 +! function to give ourselves the other parameters we want
1.21 +
1.22 + mov %o0, %o1 ! shuffle the index up to 2nd place
1.23 + mov %i0, %o0 ! the original 'this'
1.24 + add %fp, 0x7ff + 136, %o2 ! previous stack top adjusted to the first argument slot (beyond 'this')
1.25 +
1.26 +! save off the original incoming parameters that arrived in
1.27 +! registers, the ABI guarantees the space for us to do this
1.28 + stx %i1, [%fp + 0x7ff + 136]
1.29 + stx %i2, [%fp + 0x7ff + 144]
1.30 + stx %i3, [%fp + 0x7ff + 152]
1.31 + stx %i4, [%fp + 0x7ff + 160]
1.32 + stx %i5, [%fp + 0x7ff + 168]
1.33 +! now we can build our own stack frame
1.34 + save %sp,-(128 + 64),%sp ! room for the register window and
1.35 + ! struct pointer, rounded up to 0 % 64
1.36 +! our function now appears to have been called
1.37 +! as SharedStub(nsISupports* that, uint32_t index, uint32_t* args)
1.38 +! so we can just copy these through
1.39 +
1.40 + mov %i0, %o0
1.41 + mov %i1, %o1
1.42 + mov %i2, %o2
1.43 + call PrepareAndDispatch
1.44 + nop
1.45 + mov %o0,%i0 ! propagate return value
1.46 + b .LL1
1.47 + nop
1.48 +.LL1:
1.49 + ret
1.50 + restore
1.51 +
1.52 + .size SharedStub, .-SharedStub
1.53 + .type SharedStub, #function
