1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* 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/. */
/*
* Platform specific code to invoke XPCOM methods on native objects for
* solaris/sparc with gcc 3 ABI.
*/
.global NS_InvokeByIndex
/*
* NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex,
* uint32_t paramCount, nsXPTCVariant* params);
*/
NS_InvokeByIndex:
save %sp,-(64 + 32),%sp ! room for the register window and
! struct pointer, rounded up to 0 % 32
mov %i2,%o0 ! paramCount
call invoke_count_words ! returns the required stack size in %o0
mov %i3,%o1 ! params
sll %o0,2,%l0 ! number of bytes
sub %sp,%l0,%sp ! create the additional stack space
mov %sp,%o0 ! pointer for copied args
add %o0,72,%o0 ! step past the register window, the
! struct result pointer and the 'this' slot
mov %i2,%o1 ! paramCount
call invoke_copy_to_stack
mov %i3,%o2 ! params
!
! calculate the target address from the vtable
!
ld [%i0],%l1 ! *that --> vTable
sll %i1,2,%i1 ! multiply index by 4
add %i1,%l1,%l1 ! l1 now points to vTable entry
ld [%l1],%l0 ! target address
.L5: ld [%sp + 88],%o5
.L4: ld [%sp + 84],%o4
.L3: ld [%sp + 80],%o3
.L2: ld [%sp + 76],%o2
.L1: ld [%sp + 72],%o1
.L0:
jmpl %l0,%o7 ! call the routine
! always have a 'this', from the incoming 'that'
mov %i0,%o0
mov %o0,%i0 ! propagate return value
ret
restore
|
