xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_sparc_openbsd.s@6474c204b198 (annotated)
xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_sparc_openbsd.s
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| michael@0 | 2 | * |
| michael@0 | 3 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | /* Platform specific code to invoke XPCOM methods on native objects */ |
| michael@0 | 8 | .global XPTC_InvokeByIndex |
| michael@0 | 9 | /* |
| michael@0 | 10 | XPTC_InvokeByIndex(nsISupports* that, uint32_t methodIndex, |
| michael@0 | 11 | uint32_t paramCount, nsXPTCVariant* params); |
| michael@0 | 12 | |
| michael@0 | 13 | */ |
| michael@0 | 14 | XPTC_InvokeByIndex: |
| michael@0 | 15 | save %sp,-(64 + 16),%sp ! room for the register window and |
| michael@0 | 16 | ! struct pointer, rounded up to 0 % 16 |
| michael@0 | 17 | mov %i2,%o0 ! paramCount |
| michael@0 | 18 | call invoke_count_words ! returns the required stack size in %o0 |
| michael@0 | 19 | mov %i3,%o1 ! params |
| michael@0 | 20 | |
| michael@0 | 21 | sll %o0,2,%l0 ! number of bytes |
| michael@0 | 22 | sub %sp,%l0,%sp ! create the additional stack space |
| michael@0 | 23 | |
| michael@0 | 24 | mov %sp,%o0 ! pointer for copied args |
| michael@0 | 25 | add %o0,72,%o0 ! step past the register window, the |
| michael@0 | 26 | ! struct result pointer and the 'this' slot |
| michael@0 | 27 | mov %i2,%o1 ! paramCount |
| michael@0 | 28 | call invoke_copy_to_stack |
| michael@0 | 29 | mov %i3,%o2 ! params |
| michael@0 | 30 | ! |
| michael@0 | 31 | ! calculate the target address from the vtable |
| michael@0 | 32 | ! |
| michael@0 | 33 | add %i1,1,%i1 ! vTable is zero-based, index is 1 based (?) |
| michael@0 | 34 | ld [%i0],%l1 ! *that --> vTable |
| michael@0 | 35 | sll %i1,3,%i1 |
| michael@0 | 36 | add %i1,%l1,%l1 ! vTable[index * 8], l1 now points to vTable entry |
| michael@0 | 37 | lduh [%l1],%l0 ! this adjustor |
| michael@0 | 38 | sll %l0,16,%l0 ! sign extend to 32 bits |
| michael@0 | 39 | sra %l0,16,%l0 |
| michael@0 | 40 | add %l0,%i0,%i0 ! adjust this |
| michael@0 | 41 | ld [%l1 + 4],%l0 ! target address |
| michael@0 | 42 | |
| michael@0 | 43 | .L5: ld [%sp + 88],%o5 |
| michael@0 | 44 | .L4: ld [%sp + 84],%o4 |
| michael@0 | 45 | .L3: ld [%sp + 80],%o3 |
| michael@0 | 46 | .L2: ld [%sp + 76],%o2 |
| michael@0 | 47 | .L1: ld [%sp + 72],%o1 |
| michael@0 | 48 | .L0: |
| michael@0 | 49 | jmpl %l0,%o7 ! call the routine |
| michael@0 | 50 | ! always have a 'this', from the incoming 'that' |
| michael@0 | 51 | mov %i0,%o0 |
| michael@0 | 52 | |
| michael@0 | 53 | mov %o0,%i0 ! propagate return value |
| michael@0 | 54 | ret |
| michael@0 | 55 | restore |
