Source code of Windows XP (NT5)
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111 lines
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title "Atl30 Stubs"
;++
;
; Copyright (c) 2001 Microsoft Corporation
;
; Module Name:
;
; atl30asm.asm
;
; Abstract:
;
; This module implements the atlcom.h call thunk helper and the atlbase.h
; query interface implementation thunks for the AMD64 platform.
;
; Author:
;
; David N. Cutler 18-Feb-2001
;
; Environment:
;
; Any mode.
;
;-
include ksamd64.inc
subttl "Call Thunk Helper"
;++
;
; VOID
; CComStdCallThunkHelper (
; PVOID pThunk
; ...
; )
;
; Routine Description:
;
; This function forwards a call through a com call thunk.
;
; Arguments:
;
; This (rcx) - Supplies a pointer to the thunk data.
;
; Return Value:
;
; None.
;
;--
LEAF_ENTRY CComStdCallThunkHelper, _TEXT$00
mov rax, rcx ; copy pThunk address
mov rcx, 8[rax] ; get address of pThunk->pThis
jmp qword ptr 16[rax] ; jump to pThunk->pfn
LEAF_END CComStdCallThunkHelper, _TEXT$00
subttl "Query Interface Thunk Functions"
;++
;
; VOID
; _QIThunk<nnn>(
; IN IUnknown *This,
; ...
; )
;
; Routine Description:
;
; This function forwards a call through a query interface thunk.
;
; Arguments:
;
; This (rcx) - Supplies a pointer to the interface.
;
; Return Value:
;
; None.
;
;--
;
; Define macro to generate forwarder functions.
;
IMPL_THUNK macro Method
LEAF_ENTRY _QIThunk_f&Method, _TEXT$00
mov rcx, 8[rax] ; get object address
mov rax, [rcx] ; get vtable address
jmp qword ptr (&Method * 8)[rax] ; transfer to method
LEAF_END _QIThunk_f&Method, _TEXT$00
endm
;
; Generate forwarder functions.
;
;index = 3
; rept (1023 - 3 + 1)
; IMPL_THUNK %index
;index = index + 1
; endm
end