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|
;
; Copyright (c) Microsoft. All rights reserved.
; Licensed under the MIT license. See LICENSE file in the project root for full license information.
;
; ==++==
;
;
; ==--==
ifdef FEATURE_COMINTEROP
include AsmMacros.inc
include asmconstants.inc
CTPMethodTable__s_pThunkTable equ ?s_pThunkTable@CTPMethodTable@@0PEAVMethodTable@@EA
InstantiatedMethodDesc__IMD_GetComPlusCallInfo equ ?IMD_GetComPlusCallInfo@InstantiatedMethodDesc@@QEAAPEAUComPlusCallInfo@@XZ
ifdef FEATURE_REMOTING
extern CRemotingServices__DispatchInterfaceCall:proc
extern CTPMethodTable__s_pThunkTable:qword
extern InstantiatedMethodDesc__IMD_GetComPlusCallInfo:proc
endif
extern CLRToCOMWorker:proc
extern ProcessCLRException:proc
ifdef FEATURE_REMOTING
;
; in:
; r10: MethodDesc*
; rcx: 'this' object
;
; out:
; METHODDESC_REGISTER (r10) = MethodDesc* (for IL stubs)
;
LEAF_ENTRY GenericComPlusCallStub, _TEXT
;
; check for a null 'this' pointer and
; then see if this is a TransparentProxy
;
test rcx, rcx
jz do_com_call
mov rax, [CTPMethodTable__s_pThunkTable]
cmp [rcx], rax
jne do_com_call
;
; 'this' is a TransparentProxy
;
jmp CRemotingServices__DispatchInterfaceCall
do_com_call:
;
; Check if the call is being made on an InstantiatedMethodDesc.
;
mov ax, [r10 + OFFSETOF__MethodDesc__m_wFlags]
and ax, MethodDescClassification__mdcClassification
cmp ax, MethodDescClassification__mcInstantiated
je GenericComPlusCallWorkerInstantiated
;
; Check if there is an IL stub.
;
mov rax, [r10 + OFFSETOF__ComPlusCallMethodDesc__m_pComPlusCallInfo]
mov rax, [rax + OFFSETOF__ComPlusCallInfo__m_pILStub]
test rax, rax
jz GenericComPlusCallStubSlow
TAILJMP_RAX
LEAF_END GenericComPlusCallStub, _TEXT
; We could inline IMD_GetComPlusCallInfo here but it would be ugly.
NESTED_ENTRY GenericComPlusCallWorkerInstantiated, _TEXT, ProcessCLRException
alloc_stack 68h
save_reg_postrsp r10, 60h
SAVE_ARGUMENT_REGISTERS 70h
SAVE_FLOAT_ARGUMENT_REGISTERS 20h
END_PROLOGUE
mov rcx, r10
call InstantiatedMethodDesc__IMD_GetComPlusCallInfo
RESTORE_FLOAT_ARGUMENT_REGISTERS 20h
RESTORE_ARGUMENT_REGISTERS 70h
mov r10, [rsp + 60h]
mov rax, [rax + OFFSETOF__ComPlusCallInfo__m_pILStub]
add rsp, 68h
TAILJMP_RAX
NESTED_END GenericComPlusCallWorkerInstantiated, _TEXT
endif
ifdef FEATURE_REMOTING
NESTED_ENTRY GenericComPlusCallStubSlow, _TEXT, ProcessCLRException
else
NESTED_ENTRY GenericComPlusCallStub, _TEXT, ProcessCLRException
endif
PROLOG_WITH_TRANSITION_BLOCK 8
;
; Call CLRToCOMWorker.
;
lea rcx, [rsp + __PWTB_TransitionBlock] ; pTransitionBlock
mov rdx, r10 ; MethodDesc *
call CLRToCOMWorker
; handle FP return values
lea rcx, [rsp + __PWTB_FloatArgumentRegisters - 8]
cmp rax, 4
jne @F
movss xmm0, real4 ptr [rcx]
@@:
cmp rax, 8
jne @F
movsd xmm0, real8 ptr [rcx]
@@:
; load return value
mov rax, [rcx]
EPILOG_WITH_TRANSITION_BLOCK_RETURN
ifdef FEATURE_REMOTING
NESTED_END GenericComPlusCallStubSlow, _TEXT
else
NESTED_END GenericComPlusCallStub, _TEXT
endif
endif ; FEATURE_COMINTEROP
end
|
