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|
; Licensed to the .NET Foundation under one or more agreements.
; The .NET Foundation licenses this file to you under the MIT license.
; See the LICENSE file in the project root for more information.
; ==++==
;
;
; ==--==
include <AsmMacros.inc>
include AsmConstants.inc
ifdef FEATURE_MIXEDMODE
IJWNOADThunk__MakeCall equ ?MakeCall@IJWNOADThunk@@KAXXZ
IJWNOADThunk__FindThunkTarget equ ?FindThunkTarget@IJWNOADThunk@@QEAAPEBXXZ
endif
gfHostConfig equ ?g_fHostConfig@@3KA
NDirect__IsHostHookEnabled equ ?IsHostHookEnabled@NDirect@@SAHXZ
extern CreateThreadBlockThrow:proc
extern TheUMEntryPrestubWorker:proc
ifdef FEATURE_MIXEDMODE
extern IJWNOADThunk__FindThunkTarget:proc
endif
extern UMEntryPrestubUnwindFrameChainHandler:proc
extern UMThunkStubUnwindFrameChainHandler:proc
extern g_TrapReturningThreads:dword
extern UM2MDoADCallBack:proc
extern ReverseEnterRuntimeHelper:proc
extern ReverseLeaveRuntimeHelper:proc
ifdef FEATURE_INCLUDE_ALL_INTERFACES
extern gfHostConfig:dword
extern NDirect__IsHostHookEnabled:proc
endif
extern UMThunkStubRareDisableWorker:proc
extern ReversePInvokeBadTransition:proc
;
; METHODDESC_REGISTER: UMEntryThunk*
;
NESTED_ENTRY TheUMEntryPrestub, _TEXT, UMEntryPrestubUnwindFrameChainHandler
TheUMEntryPrestub_STACK_FRAME_SIZE = SIZEOF_MAX_OUTGOING_ARGUMENT_HOMES
; XMM save area
TheUMEntryPrestub_XMM_SAVE_OFFSET = TheUMEntryPrestub_STACK_FRAME_SIZE
TheUMEntryPrestub_STACK_FRAME_SIZE = TheUMEntryPrestub_STACK_FRAME_SIZE + SIZEOF_MAX_FP_ARG_SPILL
; Ensure that the new rsp will be 16-byte aligned. Note that the caller has
; already pushed the return address.
if ((TheUMEntryPrestub_STACK_FRAME_SIZE + 8) MOD 16) ne 0
TheUMEntryPrestub_STACK_FRAME_SIZE = TheUMEntryPrestub_STACK_FRAME_SIZE + 8
endif
alloc_stack TheUMEntryPrestub_STACK_FRAME_SIZE
save_reg_postrsp rcx, TheUMEntryPrestub_STACK_FRAME_SIZE + 8h
save_reg_postrsp rdx, TheUMEntryPrestub_STACK_FRAME_SIZE + 10h
save_reg_postrsp r8, TheUMEntryPrestub_STACK_FRAME_SIZE + 18h
save_reg_postrsp r9, TheUMEntryPrestub_STACK_FRAME_SIZE + 20h
save_xmm128_postrsp xmm0, TheUMEntryPrestub_XMM_SAVE_OFFSET
save_xmm128_postrsp xmm1, TheUMEntryPrestub_XMM_SAVE_OFFSET + 10h
save_xmm128_postrsp xmm2, TheUMEntryPrestub_XMM_SAVE_OFFSET + 20h
save_xmm128_postrsp xmm3, TheUMEntryPrestub_XMM_SAVE_OFFSET + 30h
END_PROLOGUE
;
; Do prestub-specific stuff
;
mov rcx, METHODDESC_REGISTER
call TheUMEntryPrestubWorker
;
; we're going to tail call to the exec stub that we just setup
;
mov rcx, [rsp + TheUMEntryPrestub_STACK_FRAME_SIZE + 8h]
mov rdx, [rsp + TheUMEntryPrestub_STACK_FRAME_SIZE + 10h]
mov r8, [rsp + TheUMEntryPrestub_STACK_FRAME_SIZE + 18h]
mov r9, [rsp + TheUMEntryPrestub_STACK_FRAME_SIZE + 20h]
movdqa xmm0, xmmword ptr [rsp + TheUMEntryPrestub_XMM_SAVE_OFFSET]
movdqa xmm1, xmmword ptr [rsp + TheUMEntryPrestub_XMM_SAVE_OFFSET + 10h]
movdqa xmm2, xmmword ptr [rsp + TheUMEntryPrestub_XMM_SAVE_OFFSET + 20h]
movdqa xmm3, xmmword ptr [rsp + TheUMEntryPrestub_XMM_SAVE_OFFSET + 30h]
;
; epilogue
;
add rsp, TheUMEntryPrestub_STACK_FRAME_SIZE
TAILJMP_RAX
NESTED_END TheUMEntryPrestub, _TEXT
;
; METHODDESC_REGISTER: UMEntryThunk*
;
NESTED_ENTRY UMThunkStub, _TEXT, UMThunkStubUnwindFrameChainHandler
UMThunkStubAMD64_STACK_FRAME_SIZE = 0
; number of integer registers saved in prologue
UMThunkStubAMD64_NUM_REG_PUSHES = 2
UMThunkStubAMD64_STACK_FRAME_SIZE = UMThunkStubAMD64_STACK_FRAME_SIZE + (UMThunkStubAMD64_NUM_REG_PUSHES * 8)
; rare path spill area
UMThunkStubAMD64_RARE_PATH_SPILL_SIZE = 10h
UMThunkStubAMD64_STACK_FRAME_SIZE = UMThunkStubAMD64_STACK_FRAME_SIZE + UMThunkStubAMD64_RARE_PATH_SPILL_SIZE
UMThunkStubAMD64_RARE_PATH_SPILL_NEGOFFSET = UMThunkStubAMD64_STACK_FRAME_SIZE
; HOST_NOTIFY_FLAG
UMThunkStubAMD64_STACK_FRAME_SIZE = UMThunkStubAMD64_STACK_FRAME_SIZE + 8
UMThunkStubAMD64_HOST_NOTIFY_FLAG_NEGOFFSET = UMThunkStubAMD64_STACK_FRAME_SIZE
; XMM save area
UMThunkStubAMD64_STACK_FRAME_SIZE = UMThunkStubAMD64_STACK_FRAME_SIZE + SIZEOF_MAX_FP_ARG_SPILL
; Ensure that the offset of the XMM save area will be 16-byte aligned.
if ((UMThunkStubAMD64_STACK_FRAME_SIZE + 8) MOD 16) ne 0 ; +8 for caller-pushed return address
UMThunkStubAMD64_STACK_FRAME_SIZE = UMThunkStubAMD64_STACK_FRAME_SIZE + 8
endif
UMThunkStubAMD64_XMM_SAVE_NEGOFFSET = UMThunkStubAMD64_STACK_FRAME_SIZE
; Add in the callee scratch area size.
UMThunkStubAMD64_CALLEE_SCRATCH_SIZE = SIZEOF_MAX_OUTGOING_ARGUMENT_HOMES
UMThunkStubAMD64_STACK_FRAME_SIZE = UMThunkStubAMD64_STACK_FRAME_SIZE + UMThunkStubAMD64_CALLEE_SCRATCH_SIZE
; Now we have the full size of the stack frame. The offsets have been computed relative to the
; top, so negate them to make them relative to the post-prologue rsp.
UMThunkStubAMD64_FRAME_OFFSET = UMThunkStubAMD64_CALLEE_SCRATCH_SIZE
UMThunkStubAMD64_RARE_PATH_SPILL_OFFSET = UMThunkStubAMD64_STACK_FRAME_SIZE - UMThunkStubAMD64_FRAME_OFFSET - UMThunkStubAMD64_RARE_PATH_SPILL_NEGOFFSET
UMThunkStubAMD64_HOST_NOTIFY_FLAG_OFFSET = UMThunkStubAMD64_STACK_FRAME_SIZE - UMThunkStubAMD64_FRAME_OFFSET - UMThunkStubAMD64_HOST_NOTIFY_FLAG_NEGOFFSET
UMThunkStubAMD64_XMM_SAVE_OFFSET = UMThunkStubAMD64_STACK_FRAME_SIZE - UMThunkStubAMD64_FRAME_OFFSET - UMThunkStubAMD64_XMM_SAVE_NEGOFFSET
UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET = UMThunkStubAMD64_STACK_FRAME_SIZE + 8 - UMThunkStubAMD64_FRAME_OFFSET ; +8 for return address
UMThunkStubAMD64_FIXED_STACK_ALLOC_SIZE = UMThunkStubAMD64_STACK_FRAME_SIZE - (UMThunkStubAMD64_NUM_REG_PUSHES * 8)
.errnz UMTHUNKSTUB_HOST_NOTIFY_FLAG_RBPOFFSET - UMThunkStubAMD64_HOST_NOTIFY_FLAG_OFFSET, update UMTHUNKSTUB_HOST_NOTIFY_FLAG_RBPOFFSET
;
; [ callee scratch ] <-- new RSP
; [ callee scratch ]
; [ callee scratch ]
; [ callee scratch ]
; {optional stack args passed to callee}
; xmm0 <-- RBP
; xmm1
; xmm2
; xmm3
; {optional padding to align xmm regs}
; HOST_NOTIFY_FLAG (needs to make ReverseLeaveRuntime call flag)
; [rare path spill area]
; [rare path spill area]
; rbp save
; r12 save
; return address <-- entry RSP
; [rcx home]
; [rdx home]
; [r8 home]
; [r9 home]
; stack arg 0
; stack arg 1
; ...
push_nonvol_reg r12
push_nonvol_reg rbp ; stack_args
alloc_stack UMThunkStubAMD64_FIXED_STACK_ALLOC_SIZE
set_frame rbp, UMThunkStubAMD64_FRAME_OFFSET ; stack_args
mov byte ptr [rbp + UMThunkStubAMD64_HOST_NOTIFY_FLAG_OFFSET], 0 ; hosted
END_PROLOGUE
;
; Call GetThread()
;
CALL_GETTHREAD ; will not trash r10
test rax, rax
jz DoThreadSetup
HaveThread:
mov r12, rax ; r12 <- Thread*
;FailFast if a native callable method invoked via ldftn and calli.
cmp dword ptr [r12 + OFFSETOF__Thread__m_fPreemptiveGCDisabled], 1
jz InvalidTransition
;
; disable preemptive GC
;
mov dword ptr [r12 + OFFSETOF__Thread__m_fPreemptiveGCDisabled], 1
;
; catch returning thread here if a GC is in progress
;
cmp [g_TrapReturningThreads], 0
jnz DoTrapReturningThreadsTHROW
InCooperativeMode:
ifdef FEATURE_INCLUDE_ALL_INTERFACES
test [gfHostConfig], ASM_CLRTASKHOSTED ; inlined NDirect::IsHostHookEnabled ; hosted
ifdef _DEBUG
call IsHostHookEnabledHelper
test eax, eax
endif ; _DEBUG
jnz NotifyHost_ReverseEnterRuntime ; hosted
Done_NotifyHost_ReverseEnterRuntime:
endif
mov rax, [r12 + OFFSETOF__Thread__m_pDomain]
mov eax, [rax + OFFSETOF__AppDomain__m_dwId]
mov r11d, [METHODDESC_REGISTER + OFFSETOF__UMEntryThunk__m_dwDomainId]
cmp rax, r11
jne WrongAppDomain
mov r11, [METHODDESC_REGISTER + OFFSETOF__UMEntryThunk__m_pUMThunkMarshInfo]
mov eax, [r11 + OFFSETOF__UMThunkMarshInfo__m_cbActualArgSize] ; stack_args
test rax, rax ; stack_args
jnz CopyStackArgs ; stack_args
ArgumentsSetup:
mov rax, [r11 + OFFSETOF__UMThunkMarshInfo__m_pILStub] ; rax <- Stub*
call rax
PostCall:
;
; enable preemptive GC
;
mov dword ptr [r12 + OFFSETOF__Thread__m_fPreemptiveGCDisabled], 0
ifdef FEATURE_INCLUDE_ALL_INTERFACES
cmp byte ptr [rbp + UMThunkStubAMD64_HOST_NOTIFY_FLAG_OFFSET], 0 ; hosted
jnz NotifyHost_ReverseLeaveRuntime ; hosted
Done_NotifyHost_ReverseLeaveRuntime:
endif
; epilog
lea rsp, [rbp - UMThunkStubAMD64_FRAME_OFFSET + UMThunkStubAMD64_FIXED_STACK_ALLOC_SIZE]
pop rbp ; stack_args
pop r12
ret
DoThreadSetup:
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 0h], rcx
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 8h], rdx
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 10h], r8
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 18h], r9
; @CONSIDER: mark UMEntryThunks that have FP params and only save/restore xmm regs on those calls
; initial measurements indidcate that this could be worth about a 5% savings in reverse
; pinvoke overhead.
movdqa xmmword ptr[rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 0h], xmm0
movdqa xmmword ptr[rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 10h], xmm1
movdqa xmmword ptr[rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 20h], xmm2
movdqa xmmword ptr[rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 30h], xmm3
mov [rbp + UMThunkStubAMD64_RARE_PATH_SPILL_OFFSET], METHODDESC_REGISTER
call CreateThreadBlockThrow
mov METHODDESC_REGISTER, [rbp + UMThunkStubAMD64_RARE_PATH_SPILL_OFFSET]
mov rcx, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 0h]
mov rdx, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 8h]
mov r8, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 10h]
mov r9, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 18h]
; @CONSIDER: mark UMEntryThunks that have FP params and only save/restore xmm regs on those calls
movdqa xmm0, xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 0h]
movdqa xmm1, xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 10h]
movdqa xmm2, xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 20h]
movdqa xmm3, xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 30h]
jmp HaveThread
InvalidTransition:
; ReversePInvokeBadTransition will failfast
call ReversePInvokeBadTransition
DoTrapReturningThreadsTHROW:
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 0h], rcx
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 8h], rdx
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 10h], r8
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 18h], r9
; @CONSIDER: mark UMEntryThunks that have FP params and only save/restore xmm regs on those calls
; initial measurements indidcate that this could be worth about a 5% savings in reverse
; pinvoke overhead.
movdqa xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 0h], xmm0
movdqa xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 10h], xmm1
movdqa xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 20h], xmm2
movdqa xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 30h], xmm3
mov [rbp + UMThunkStubAMD64_RARE_PATH_SPILL_OFFSET], METHODDESC_REGISTER
mov rcx, r12 ; Thread* pThread
mov rdx, METHODDESC_REGISTER ; UMEntryThunk* pUMEntry
call UMThunkStubRareDisableWorker
mov METHODDESC_REGISTER, [rbp + UMThunkStubAMD64_RARE_PATH_SPILL_OFFSET]
mov rcx, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 0h]
mov rdx, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 8h]
mov r8, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 10h]
mov r9, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 18h]
; @CONSIDER: mark UMEntryThunks that have FP params and only save/restore xmm regs on those calls
movdqa xmm0, xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 0h]
movdqa xmm1, xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 10h]
movdqa xmm2, xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 20h]
movdqa xmm3, xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 30h]
jmp InCooperativeMode
CopyStackArgs:
; rax = cbStackArgs (with 20h for register args subtracted out already)
sub rsp, rax
and rsp, -16
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 0h], rcx
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 8h], rdx
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 10h], r8
; rax = number of bytes
lea rcx, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + SIZEOF_MAX_OUTGOING_ARGUMENT_HOMES]
lea rdx, [rsp + UMThunkStubAMD64_CALLEE_SCRATCH_SIZE]
CopyLoop:
; rax = number of bytes
; rcx = src
; rdx = dest
; r8 = sratch
add rax, -8
mov r8, [rcx + rax]
mov [rdx + rax], r8
jnz CopyLoop
mov rcx, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 0h]
mov rdx, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 8h]
mov r8, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 10h]
jmp ArgumentsSetup
ifdef FEATURE_INCLUDE_ALL_INTERFACES
NotifyHost_ReverseEnterRuntime:
mov [rbp + UMThunkStubAMD64_RARE_PATH_SPILL_OFFSET], METHODDESC_REGISTER
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 0h], rcx
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 8h], rdx
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 10h], r8
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 18h], r9
; @CONSIDER: mark UMEntryThunks that have FP params and only save/restore xmm regs on those calls
; initial measurements indidcate that this could be worth about a 5% savings in reverse
; pinvoke overhead.
movdqa xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 0h], xmm0
movdqa xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 10h], xmm1
movdqa xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 20h], xmm2
movdqa xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 30h], xmm3
mov rcx, r12
call ReverseEnterRuntimeHelper
mov byte ptr [rbp + UMThunkStubAMD64_HOST_NOTIFY_FLAG_OFFSET], 1
mov rcx, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 0h]
mov rdx, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 8h]
mov r8, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 10h]
mov r9, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 18h]
; @CONSIDER: mark UMEntryThunks that have FP params and only save/restore xmm regs on those calls
movdqa xmm0, xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 0h]
movdqa xmm1, xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 10h]
movdqa xmm2, xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 20h]
movdqa xmm3, xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 30h]
mov METHODDESC_REGISTER, [rbp + UMThunkStubAMD64_RARE_PATH_SPILL_OFFSET]
jmp Done_NotifyHost_ReverseEnterRuntime
NotifyHost_ReverseLeaveRuntime:
; save rax, xmm0
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 0h], rax
movdqa xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 0h], xmm0
mov rcx, r12
call ReverseLeaveRuntimeHelper
mov byte ptr [rbp + UMThunkStubAMD64_HOST_NOTIFY_FLAG_OFFSET], 0
; restore rax, xmm0
mov rax, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 0h]
movdqa xmm0, xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 0h]
jmp Done_NotifyHost_ReverseLeaveRuntime
endif
WrongAppDomain:
;
; home register args to the stack
;
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 0h], rcx
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 8h], rdx
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 10h], r8
mov [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 18h], r9
;
; save off xmm registers
;
movdqa xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 0h], xmm0
movdqa xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 10h], xmm1
movdqa xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 20h], xmm2
movdqa xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 30h], xmm3
;
; call our helper to perform the AD transtion
;
mov rcx, METHODDESC_REGISTER
lea r8, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET]
mov rax, [METHODDESC_REGISTER + OFFSETOF__UMEntryThunk__m_pUMThunkMarshInfo]
mov r9d, [rax + OFFSETOF__UMThunkMarshInfo__m_cbActualArgSize]
call UM2MDoADCallBack
; restore return value
mov rax, [rbp + UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 0h]
movdqa xmm0, xmmword ptr [rbp + UMThunkStubAMD64_XMM_SAVE_OFFSET + 0h]
jmp PostCall
NESTED_END UMThunkStub, _TEXT
;
; EXTERN_C void __stdcall UM2MThunk_WrapperHelper(
; void *pThunkArgs, ; rcx
; int argLen, ; rdx
; void *pAddr, ; r8 // not used
; UMEntryThunk *pEntryThunk, ; r9
; Thread *pThread); ; [entry_sp + 28h]
;
NESTED_ENTRY UM2MThunk_WrapperHelper, _TEXT
UM2MThunk_WrapperHelper_STACK_FRAME_SIZE = 0
; number of integer registers saved in prologue
UM2MThunk_WrapperHelper_NUM_REG_PUSHES = 3
UM2MThunk_WrapperHelper_STACK_FRAME_SIZE = UM2MThunk_WrapperHelper_STACK_FRAME_SIZE + (UM2MThunk_WrapperHelper_NUM_REG_PUSHES * 8)
UM2MThunk_WrapperHelper_CALLEE_SCRATCH_SIZE = SIZEOF_MAX_OUTGOING_ARGUMENT_HOMES
UM2MThunk_WrapperHelper_STACK_FRAME_SIZE = UM2MThunk_WrapperHelper_STACK_FRAME_SIZE + UM2MThunk_WrapperHelper_CALLEE_SCRATCH_SIZE
; Ensure that rsp remains 16-byte aligned
if ((UM2MThunk_WrapperHelper_STACK_FRAME_SIZE + 8) MOD 16) ne 0 ; +8 for caller-pushed return address
UM2MThunk_WrapperHelper_STACK_FRAME_SIZE = UM2MThunk_WrapperHelper_STACK_FRAME_SIZE + 8
endif
UM2MThunk_WrapperHelper_FRAME_OFFSET = UM2MThunk_WrapperHelper_CALLEE_SCRATCH_SIZE
UM2MThunk_WrapperHelper_FIXED_STACK_ALLOC_SIZE = UM2MThunk_WrapperHelper_STACK_FRAME_SIZE - (UM2MThunk_WrapperHelper_NUM_REG_PUSHES * 8)
push_nonvol_reg rsi
push_nonvol_reg rdi
push_nonvol_reg rbp
alloc_stack UM2MThunk_WrapperHelper_FIXED_STACK_ALLOC_SIZE
set_frame rbp, UM2MThunk_WrapperHelper_FRAME_OFFSET
END_PROLOGUE
;
; We are in cooperative mode and in the correct domain.
; The host has also been notified that we've entered the
; runtime. All we have left to do is to copy the stack,
; setup the register args and then call the managed target
;
test rdx, rdx
jg CopyStackArgs
ArgumentsSetup:
mov METHODDESC_REGISTER, r9
mov rsi, rcx ; rsi <- pThunkArgs
mov rcx, [rsi + 0h]
mov rdx, [rsi + 8h]
mov r8, [rsi + 10h]
mov r9, [rsi + 18h]
movdqa xmm0, xmmword ptr [rsi + UMThunkStubAMD64_XMM_SAVE_OFFSET - UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 0h]
movdqa xmm1, xmmword ptr [rsi + UMThunkStubAMD64_XMM_SAVE_OFFSET - UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 10h]
movdqa xmm2, xmmword ptr [rsi + UMThunkStubAMD64_XMM_SAVE_OFFSET - UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 20h]
movdqa xmm3, xmmword ptr [rsi + UMThunkStubAMD64_XMM_SAVE_OFFSET - UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 30h]
mov rax, [METHODDESC_REGISTER + OFFSETOF__UMEntryThunk__m_pUMThunkMarshInfo] ; rax <- UMThunkMarshInfo*
mov rax, [rax + OFFSETOF__UMThunkMarshInfo__m_pILStub] ; rax <- Stub*
call rax
; make sure we don't trash the return value
mov [rsi + 0h], rax
movdqa xmmword ptr [rsi + UMThunkStubAMD64_XMM_SAVE_OFFSET - UMThunkStubAMD64_ARGUMENTS_STACK_HOME_OFFSET + 0h], xmm0
lea rsp, [rbp - UM2MThunk_WrapperHelper_FRAME_OFFSET + UM2MThunk_WrapperHelper_FIXED_STACK_ALLOC_SIZE]
pop rbp
pop rdi
pop rsi
ret
CopyStackArgs:
; rdx = cbStackArgs (with 20h for register args subtracted out already)
; rcx = pSrcArgStack
sub rsp, rdx
and rsp, -16
mov r8, rcx
lea rsi, [rcx + SIZEOF_MAX_OUTGOING_ARGUMENT_HOMES]
lea rdi, [rsp + UM2MThunk_WrapperHelper_CALLEE_SCRATCH_SIZE]
mov rcx, rdx
shr rcx, 3
rep movsq
mov rcx, r8
jmp ArgumentsSetup
NESTED_END UM2MThunk_WrapperHelper, _TEXT
ifdef _DEBUG
ifdef FEATURE_INCLUDE_ALL_INTERFACES
NESTED_ENTRY IsHostHookEnabledHelper, _TEXT
push_nonvol_reg rcx
push_nonvol_reg rdx
push_nonvol_reg r8
push_nonvol_reg r9
push_nonvol_reg r10
IsHostHookEnabledHelper_FIXED_STACK_ALLOC_SIZE = 20h + 40h
alloc_stack IsHostHookEnabledHelper_FIXED_STACK_ALLOC_SIZE
END_PROLOGUE
movdqa xmmword ptr [rsp + 20h + 0h], xmm0
movdqa xmmword ptr [rsp + 20h + 10h], xmm1
movdqa xmmword ptr [rsp + 20h + 20h], xmm2
movdqa xmmword ptr [rsp + 20h + 30h], xmm3
call NDirect__IsHostHookEnabled
movdqa xmm0, xmmword ptr [rsp + 20h + 0h]
movdqa xmm1, xmmword ptr [rsp + 20h + 10h]
movdqa xmm2, xmmword ptr [rsp + 20h + 20h]
movdqa xmm3, xmmword ptr [rsp + 20h + 30h]
; epilog
add rsp, IsHostHookEnabledHelper_FIXED_STACK_ALLOC_SIZE
pop r10
pop r9
pop r8
pop rdx
pop rcx
ret
NESTED_END IsHostHookEnabledHelper, _TEXT
endif ; FEATURE_INCLUDE_ALL_INTERFACES
endif ; _DEBUG
ifdef FEATURE_MIXEDMODE
NESTED_ENTRY IJWNOADThunk__MakeCall, _TEXT
; METHODDESC_REGISTER = IJWNOADThunk*
alloc_stack 68h
save_reg_postrsp rcx, 70h
save_reg_postrsp rdx, 78h
save_reg_postrsp r8, 80h
save_reg_postrsp r9, 88h
save_xmm128_postrsp xmm0, 20h
save_xmm128_postrsp xmm1, 30h
save_xmm128_postrsp xmm2, 40h
save_xmm128_postrsp xmm3, 50h
END_PROLOGUE
mov rcx, METHODDESC_REGISTER
call IJWNOADThunk__FindThunkTarget
movdqa xmm0, xmmword ptr [rsp + 20h]
movdqa xmm1, xmmword ptr [rsp + 30h]
movdqa xmm2, xmmword ptr [rsp + 40h]
movdqa xmm3, xmmword ptr [rsp + 50h]
mov rcx, [rsp + 70h]
mov rdx, [rsp + 78h]
mov r8, [rsp + 80h]
mov r9 , [rsp + 88h]
; The target is in rax
add rsp, 68h
TAILJMP_RAX
NESTED_END IJWNOADThunk__MakeCall, _TEXT
endif ; FEATURE_MIXEDMODE
end
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