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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.
LEAF_ENTRY macro Name, Section
Section segment para 'CODE'
align 16
public Name
Name proc
endm
LEAF_END macro Name, Section
Name endp
Section ends
endm
.data
g_methodEntrypointThunk qword 0 ; The method which operates on universal transition
g_universalTransition qword 0 ; The address of Redhawk's UniversalTransition thunk
.code
; - TAILCALL_RAX: ("jmp rax") should be used for tailcalls, this emits an instruction
; sequence which is recognized by the unwinder as a valid epilogue terminator
TAILJMP_RAX TEXTEQU <DB 048h, 0FFh, 0E0h>
PointerSize equ 8
;;
;; __jmpstub__MethodEntrypointStubs_CommonCallingStub(?)
;; Used when we dynamically need a VTableResolver not pre-generated
;;
;; r10 contains a pointer to a VTableResolverStruct
;; struct MethodEntryPointStubInfo
;; {
;; IntPtr targetCodePointer;
;; IntPtr MethodEntrypointStructPointer;
;; };
;;
LEAF_ENTRY __jmpstub__MethodEntrypointStubs_CommonCallingStub, _TEXT
;; r10 <- stub info
mov rax, [r10]
cmp rax, 0
je SLOW_PATH
mov rax, [r10]
TAILJMP_RAX
SLOW_PATH:
mov r11, [r10 + 8]
mov r10, g_methodEntrypointThunk
mov rax, g_universalTransition
TAILJMP_RAX
LEAF_END __jmpstub__MethodEntrypointStubs_CommonCallingStub, _TEXT
;; Returns the size of the pre-generated thunks
;; IntPtr MethodEntrypointStubs_SetupPointers(
;; IntPtr universalTransition,
;; IntPtr methodEntrypointThunk)
;;
LEAF_ENTRY MethodEntrypointStubs_SetupPointers, _TEXT
mov g_universalTransition, rcx
mov g_methodEntrypointThunk, rdx
lea rax, [__jmpstub__MethodEntrypointStubs_CommonCallingStub]
ret
LEAF_END MethodEntrypointStubs_SetupPointers, _TEXT
end
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