Commit 5ceddf4071e8bce3bdb20f8795d57d5ef0bc5503
2025-02-20T04:25:21
aarch64: add PAC to GNU Notes (#882) While PAC was enabled, the bit to indicate support in the GNU Notes section of the ELF was missing. Before: readelf -n ./aarch64-unknown-linux-gnu/.libs/libffi.so Displaying notes found in: .note.gnu.property Owner Data size Description GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0 Properties: AArch64 feature: BTI This was caused by this file not having PAC indicated in GNU Notes and the linker discarding it: File: ./aarch64-unknown-linux-gnu/src/aarch64/sysv.o Displaying notes found in: .note.gnu.property Owner Data size Description GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0 Properties: AArch64 feature: BTI Now it has it: File: ./aarch64-unknown-linux-gnu/src/aarch64/sysv.o Displaying notes found in: .note.gnu.property Owner Data size Description GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0 Properties: AArch64 feature: BTI, PAC As well as the output shared object: readelf -n ./aarch64-unknown-linux-gnu/.libs/libffi.so Displaying notes found in: .note.gnu.property Owner Data size Description GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0 Properties: AArch64 feature: BTI, PAC Fixes: #881 Signed-off-by: Bill Roberts <bill.roberts@arm.com>