diff --git a/mingw-w64-crt/crt/chpe.S b/mingw-w64-crt/crt/chpe.S
index 8311da1..20d9622 100644
--- a/mingw-w64-crt/crt/chpe.S
+++ b/mingw-w64-crt/crt/chpe.S
@@ -83,3 +83,26 @@
 	.rva  __os_arm64x_helper6
 	.rva  __os_arm64x_helper7
 	.rva  __os_arm64x_helper8
+
+/*
+ * Calls to this are synthesized by the linker when calling into import libraries,
+ * this is referred to as an 'Adjustor Thunk' in ARM64EC documentation.
+*/
+        .text
+        .balign 16
+EXPORT_SYM(__icall_helper_arm64ec)
+	.seh_proc "__icall_helper_arm64ec"
+	 stp	fp, lr, [sp, #-16]!
+	.seh_save_fplr_x 16
+	mov	fp, sp
+	.seh_set_fp
+	.seh_endprologue
+	adrp	x16, __os_arm64x_check_icall
+	ldr	x16, [x16, #:lo12:__os_arm64x_check_icall]
+	blr	x16
+	.seh_startepilogue
+	ldp	fp, lr, [sp], #16
+	.seh_save_fplr_x 16
+	.seh_endepilogue
+	br	x11
+	.seh_endproc