1 files changed, 45 insertions, 0 deletions
diff --git a/src/vm/amd64/getstate.S b/src/vm/amd64/getstate.S
new file mode 100644
index 0000000000..5c3e85cb41
--- /dev/null
+++ b/src/vm/amd64/getstate.S
@@ -0,0 +1,45 @@
+// 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.
+
+.intel_syntax noprefix
+#include "unixasmmacros.inc"
+#include "asmconstants.h"
+
+LEAF_ENTRY GetCurrentSP, _TEXT
+
+        mov rax, rsp
+        add rax, 8
+        ret
+
+LEAF_END GetCurrentSP, _TEXT
+
+
+LEAF_ENTRY GetCurrentIP, _TEXT
+
+        mov rax, [rsp]
+        ret
+
+LEAF_END GetCurrentIP, _TEXT
+
+
+// EXTERN_C void LazyMachStateCaptureState(struct LazyMachState *pState)
+LEAF_ENTRY LazyMachStateCaptureState, _TEXT
+
+        mov     rdx, [rsp]      // get the return address
+        
+        mov     [rdi + OFFSETOF__MachState__m_Capture + 0*8], r12
+        mov     [rdi + OFFSETOF__MachState__m_Capture + 1*8], r13
+        mov     [rdi + OFFSETOF__MachState__m_Capture + 2*8], r14
+        mov     [rdi + OFFSETOF__MachState__m_Capture + 3*8], r15
+        mov     [rdi + OFFSETOF__MachState__m_Capture + 4*8], rbx
+        mov     [rdi + OFFSETOF__MachState__m_Capture + 5*8], rbp
+
+        mov     qword ptr [rdi + OFFSETOF__MachState___pRetAddr], 0
+
+        mov     [rdi + OFFSETOF__LazyMachState__m_CaptureRip], rdx
+        mov     [rdi + OFFSETOF__LazyMachState__m_CaptureRsp], rsp
+
+        ret
+
+LEAF_END LazyMachStateCaptureState, _TEXT