python
diff --git a/‎Python/asm_trampoline.S‎
Lines changed: 22 additions & 0 deletions b/‎Python/asm_trampoline.S‎
Lines changed: 22 additions & 0 deletions
diff --git a/‎Python/perf_jit_trampoline.c‎
Lines changed: 4 additions & 0 deletions b/‎Python/perf_jit_trampoline.c‎
Lines changed: 4 additions & 0 deletions
@@ -9,6 +9,9 @@
 # }
 _Py_trampoline_func_start:
 #ifdef __x86_64__
+#if defined(__CET__) && (__CET__ & 1)
+    endbr64
+#endif
     sub    $8, %rsp
     call    *%rcx
     add    $8, %rsp
@@ -34,3 +37,22 @@ _Py_trampoline_func_start:
     .globl	_Py_trampoline_func_end
 _Py_trampoline_func_end:
     .section        .note.GNU-stack,"",@progbits
+# Note for indicating the assembly code supports CET
+#if defined(__x86_64__) && defined(__CET__) && (__CET__ & 1)
+    .section    .note.gnu.property,"a"
+    .align 8
+    .long    1f - 0f
+    .long    4f - 1f
+    .long    5
+0:
+    .string  "GNU"
+1:
+    .align 8
+    .long    0xc0000002
+    .long    3f - 2f
+2:
+    .long    0x3
+3:
+    .align 8
+4:
+#endif // __x86_64__
@@ -869,7 +869,11 @@ static void elf_init_ehframe(ELFObjectContext* ctx) {
          */
 #ifdef __x86_64__
         /* x86_64 calling convention unwinding rules */
+#  if defined(__CET__) && (__CET__ & 1)
+        DWRF_U8(DWRF_CFA_advance_loc | 8);    // Advance location by 8 bytes when CET protection is enabled
+#  else
         DWRF_U8(DWRF_CFA_advance_loc | 4);    // Advance location by 4 bytes
+#  endif
         DWRF_U8(DWRF_CFA_def_cfa_offset);     // Redefine CFA offset
         DWRF_UV(16);                          // New offset: SP + 16
         DWRF_U8(DWRF_CFA_advance_loc | 6);    // Advance location by 6 bytes