src: add Intel CET properties to large_pages.S

tjuhaszrh · targos · commit 64ffde608f5d · 2025-08-21T19:00:58.000+02:00
Add note indicating support of Intel CET for large_pages.S file based on annocheck guide: https://sourceware.org/annobin/annobin.html/Test-cf-protection.html PR-URL: #59363 Refs: #59084 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Richard Lau <richard.lau@ibm.com>
diff --git a/src/large_pages/node_text_start.S b/src/large_pages/node_text_start.S
@@ -1,6 +1,27 @@
 #if defined(__ELF__)
 .section .note.GNU-stack,"",%progbits
 #endif
+// Add .note.gnu.property note for x86_64 to enable Intel CET
+// Based on: https://sourceware.org/annobin/annobin.html/Test-cf-protection.html
+// Refs: https://github.com/nodejs/node/issues/59084
+#if defined(__x86_64__) || defined(_M_X64)
+.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
 .text
 .align 0x2000
 .global __node_text_start
