aarch64: Add a missing no-op define of SIGN_LR_LINUX_ONLY (#838)

This is needed at least if building for Linux, with a toolchain
that doesn't default to having PAC enabled, fixing build errors
since 45d284f2d066cc3a080c5be88e51b4d934349797.

diff --git a/src/aarch64/internal.h b/src/aarch64/internal.h
index c39f9cb229ec9661f16708840a520e9e3ff7b8b4..50fa5c139d9e2c499bd2e84f2864ad77caddfa15 100644 (file)
--- a/src/aarch64/internal.h
+++ b/src/aarch64/internal.h
@@ -88,6 +88,7 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
   #define AUTH_LR_AND_RET retab
   #define AUTH_LR_WITH_REG(x) autib lr, x
   #define BRANCH_AND_LINK_TO_REG blraaz
+  #define SIGN_LR_LINUX_ONLY
   #define BRANCH_TO_REG braaz
   #define PAC_CFI_WINDOW_SAVE
   /* Linux PAC Support */
@@ -136,6 +137,7 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
     #define AUTH_LR_AND_RET ret
     #define AUTH_LR_WITH_REG(x)
     #define BRANCH_AND_LINK_TO_REG blr
+    #define SIGN_LR_LINUX_ONLY
     #define BRANCH_TO_REG br
     #define PAC_CFI_WINDOW_SAVE
   #endif /* HAVE_ARM64E_PTRAUTH */