binfmt_elf: Define GNU_PROPERTY_X86_FEATURE_1_AND properties

Started by Yu-cheng Yu on Sep 25, 2020

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Status: Superseded by v30 (posted 2021-08-30). [go to v30]

Revision v13 (25 revisions archived).

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Yu-cheng Yu Sep 25, 15:11 #

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An ELF file's .note.gnu.property indicates architecture features of the
file.. Introduce feature definitions for Shadow Stack and Indirect Branch
Tracking.

Signed-off-by: Yu-cheng Yu <redacted>
---
 include/uapi/linux/elf.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index 22220945a5fd..ca5875f384f6 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h

@@ -454,4 +454,13 @@ typedef struct elf64_note {
 /* Bits for GNU_PROPERTY_AARCH64_FEATURE_1_BTI */
 #define GNU_PROPERTY_AARCH64_FEATURE_1_BTI	(1U << 0)
 
+/* .note.gnu.property types for x86: */
+#define GNU_PROPERTY_X86_FEATURE_1_AND		0xc0000002
+
+/* Bits for GNU_PROPERTY_X86_FEATURE_1_AND */
+#define GNU_PROPERTY_X86_FEATURE_1_IBT		0x00000001
+#define GNU_PROPERTY_X86_FEATURE_1_SHSTK	0x00000002
+#define GNU_PROPERTY_X86_FEATURE_1_INVAL ~(GNU_PROPERTY_X86_FEATURE_1_IBT | \
+					    GNU_PROPERTY_X86_FEATURE_1_SHSTK)
+
 #endif /* _UAPI_LINUX_ELF_H */

-- 
2.21.0

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