diff --git a/src/runtime/arch_386.go b/src/runtime/arch_386.go
index 76b0c7e3..46b061c8 100644
--- a/src/runtime/arch_386.go
+++ b/src/runtime/arch_386.go
@@ -9,3 +9,5 @@ const TargetBits = 32
 func align(ptr uintptr) uintptr {
 	return (ptr + 3) &^ 3
 }
+
+func getCurrentStackPointer() uintptr
diff --git a/src/runtime/arch_amd64.go b/src/runtime/arch_amd64.go
index 9fcb739e..c24f2540 100644
--- a/src/runtime/arch_amd64.go
+++ b/src/runtime/arch_amd64.go
@@ -11,3 +11,5 @@ const TargetBits = 64
 func align(ptr uintptr) uintptr {
 	return (ptr + 15) &^ 15
 }
+
+func getCurrentStackPointer() uintptr
diff --git a/src/runtime/arch_arm64.go b/src/runtime/arch_arm64.go
index 09b7b314..15c5ca49 100644
--- a/src/runtime/arch_arm64.go
+++ b/src/runtime/arch_arm64.go
@@ -9,3 +9,5 @@ const TargetBits = 64
 func align(ptr uintptr) uintptr {
 	return (ptr + 7) &^ 7
 }
+
+func getCurrentStackPointer() uintptr
diff --git a/src/runtime/arch_avr.go b/src/runtime/arch_avr.go
index 4512e85c..14461562 100644
--- a/src/runtime/arch_avr.go
+++ b/src/runtime/arch_avr.go
@@ -12,3 +12,5 @@ func align(ptr uintptr) uintptr {
 	// No alignment necessary on the AVR.
 	return ptr
 }
+
+func getCurrentStackPointer() uintptr
diff --git a/src/runtime/arch_wasm.go b/src/runtime/arch_wasm.go
index 71d6724b..f42a57c2 100644
--- a/src/runtime/arch_wasm.go
+++ b/src/runtime/arch_wasm.go
@@ -28,3 +28,5 @@ const wasmPageSize = 64 * 1024
 func align(ptr uintptr) uintptr {
 	return (ptr + 3) &^ 3
 }
+
+func getCurrentStackPointer() uintptr