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comparison: xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_sparc_openbsd.s
xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_sparc_openbsd.s
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:534289e632df |
|---|---|
| 1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 /* Platform specific code to invoke XPCOM methods on native objects */ | |
| 8 .global XPTC_InvokeByIndex | |
| 9 /* | |
| 10 XPTC_InvokeByIndex(nsISupports* that, uint32_t methodIndex, | |
| 11 uint32_t paramCount, nsXPTCVariant* params); | |
| 12 | |
| 13 */ | |
| 14 XPTC_InvokeByIndex: | |
| 15 save %sp,-(64 + 16),%sp ! room for the register window and | |
| 16 ! struct pointer, rounded up to 0 % 16 | |
| 17 mov %i2,%o0 ! paramCount | |
| 18 call invoke_count_words ! returns the required stack size in %o0 | |
| 19 mov %i3,%o1 ! params | |
| 20 | |
| 21 sll %o0,2,%l0 ! number of bytes | |
| 22 sub %sp,%l0,%sp ! create the additional stack space | |
| 23 | |
| 24 mov %sp,%o0 ! pointer for copied args | |
| 25 add %o0,72,%o0 ! step past the register window, the | |
| 26 ! struct result pointer and the 'this' slot | |
| 27 mov %i2,%o1 ! paramCount | |
| 28 call invoke_copy_to_stack | |
| 29 mov %i3,%o2 ! params | |
| 30 ! | |
| 31 ! calculate the target address from the vtable | |
| 32 ! | |
| 33 add %i1,1,%i1 ! vTable is zero-based, index is 1 based (?) | |
| 34 ld [%i0],%l1 ! *that --> vTable | |
| 35 sll %i1,3,%i1 | |
| 36 add %i1,%l1,%l1 ! vTable[index * 8], l1 now points to vTable entry | |
| 37 lduh [%l1],%l0 ! this adjustor | |
| 38 sll %l0,16,%l0 ! sign extend to 32 bits | |
| 39 sra %l0,16,%l0 | |
| 40 add %l0,%i0,%i0 ! adjust this | |
| 41 ld [%l1 + 4],%l0 ! target address | |
| 42 | |
| 43 .L5: ld [%sp + 88],%o5 | |
| 44 .L4: ld [%sp + 84],%o4 | |
| 45 .L3: ld [%sp + 80],%o3 | |
| 46 .L2: ld [%sp + 76],%o2 | |
| 47 .L1: ld [%sp + 72],%o1 | |
| 48 .L0: | |
| 49 jmpl %l0,%o7 ! call the routine | |
| 50 ! always have a 'this', from the incoming 'that' | |
| 51 mov %i0,%o0 | |
| 52 | |
| 53 mov %o0,%i0 ! propagate return value | |
| 54 ret | |
| 55 restore |
