Исправно компилируется в DLL, но нет соглашения о вызовах

sha-256.asm

@@ -1,35 +1,49 @@
-.386
-.model flat,stdcall
-option casemap:none
-include include\windows.inc
-include include\user32.inc
-include include\kernel32.inc
-includelib user32
-includelib kernel32
-
+OPTION DOTNAME
+include includes\temphls.inc
+include includes\win64.inc
+include includes\user32.inc
+includelib includes\user32.lib
+OPTION PROLOGUE:none
+OPTION EPILOGUE:none
 .data
 AppName db "DLL Skeleton",0
 HelloMsg db "Hello, you're calling a function in this DLL",0
 LoadMsg db "The DLL is loaded",0
 UnloadMsg db "The DLL is unloaded",0
-ThreadCreated db "A thread is created in this process",0
-ThreadDestroyed db "A thread is destroyed in this process",0
+SHAMsg db "SHA256 is started",0
 .code
-DllEntry proc hInstance:HINSTANCE, reason:DWORD, reserved1:DWORD
-	.if reason==DLL_PROCESS_ATTACH
-		invoke MessageBox,NULL,addr LoadMsg,addr AppName,MB_OK
-	.elseif reason==DLL_PROCESS_DETACH
-		invoke MessageBox,NULL,addr UnloadMsg,addr AppName,MB_OK
-	.elseif reason==DLL_THREAD_ATTACH
-		invoke MessageBox,NULL,addr ThreadCreated,addr AppName,MB_OK
-	.else        ; DLL_THREAD_DETACH
-		invoke MessageBox,NULL,addr ThreadDestroyed,addr AppName,MB_OK
-	.endif
-	mov  eax,TRUE
+DllMain proc hInstDLL:QWORD, reason:QWORD, unused:QWORD
+	sub rsp,28h
+	.if edx==DLL_PROCESS_ATTACH
+		lea rdx,LoadMsg
+		jmp exit
+	.elseif edx==DLL_PROCESS_DETACH
+		lea rdx,UnloadMsg
+	.endif 
+	mov r9d,MB_OK
+	jmp exit
+DllMain Endp
+TestHello proc 
+	sub rsp,28h
+	lea rdx,HelloMsg
+	mov r9d,MB_OK + MB_ICONERROR
+exit::	lea r8,AppName
+	xor rcx,rcx
+	call MessageBox
+	add rsp,28h
+	mov rax,TRUE
 	ret
-DllEntry Endp
-TestHello proc
-	invoke MessageBox,NULL,addr HelloMsg,addr AppName,MB_OK
-	ret	
 TestHello endp
-End DllEntry
+Sha256 proc h_line:QWORD, h_size:QWORD
+sub rsp,28h
+;Основа
+	lea rdx,SHAMsg
+	mov r9d,MB_OK + MB_ICONERROR
+	lea r8,AppName
+	xor ecx,ecx
+	call MessageBoxW
+	add rsp,28h
+	mov rax,TRUE
+	ret
+Sha256 Endp
+end