Author: emaste
Date: Tue Jun 4 15:44:31 2019
New Revision: 348628
URL: https://svnweb.freebsd.org/changeset/base/348628
Log:
elf_common: add GNU note types and NT_GNU_PROPERTY_TYPE_0 bits
To support Intel CET IBT/Shadow Stack.
Reviewed by: markj
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Modified:
head/sys/sys/elf_common.h
Modified: head/sys/sys/elf_common.h
==============================================================================
--- head/sys/sys/elf_common.h Tue Jun 4 15:42:30 2019 (r348627)
+++ head/sys/sys/elf_common.h Tue Jun 4 15:44:31 2019 (r348628)
@@ -785,6 +785,21 @@ typedef struct {
#define NT_X86_XSTATE 0x202 /* x86 XSAVE extended state. */
#define NT_ARM_VFP 0x400 /* ARM VFP registers */
+/* GNU note types. */
+#define NT_GNU_ABI_TAG 1
+#define NT_GNU_HWCAP 2
+#define NT_GNU_BUILD_ID 3
+#define NT_GNU_GOLD_VERSION 4
+#define NT_GNU_PROPERTY_TYPE_0 5
+
+#define GNU_PROPERTY_LOPROC 0xc0000000
+#define GNU_PROPERTY_HIPROC 0xdfffffff
+
+#define GNU_PROPERTY_X86_FEATURE_1_AND 0xc0000002
+
+#define GNU_PROPERTY_X86_FEATURE_1_IBT 0x00000001
+#define GNU_PROPERTY_X86_FEATURE_1_SHSTK 0x00000002
+
/* Symbol Binding - ELFNN_ST_BIND - st_info */
#define STB_LOCAL 0 /* Local symbol */
#define STB_GLOBAL 1 /* Global symbol */
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