interceptor: Avoid BTI compatibility on arm64e

mrmacete · oleavr · commit 698b356fef0e · 2023-04-19T19:22:28.000+02:00
diff --git a/gum/backend-arm64/guminterceptor-arm64.c b/gum/backend-arm64/guminterceptor-arm64.c
@@ -1145,5 +1145,9 @@ gum_emit_epilog (GumArm64Writer * aw)
     gum_arm64_writer_put_pop_reg_reg (aw, ARM64_REG_Q0 + i, ARM64_REG_Q1 + i);
 
   gum_arm64_writer_put_pop_reg_reg (aw, ARM64_REG_X16, ARM64_REG_X17);
+#ifndef HAVE_PTRAUTH
   gum_arm64_writer_put_ret_reg (aw, ARM64_REG_X16);
+#else
+  gum_arm64_writer_put_br_reg (aw, ARM64_REG_X16);
+#endif
 }

Original file line number	Diff line number	Diff line change
`@@ -1145,5 +1145,9 @@ gum_emit_epilog (GumArm64Writer * aw)`
`1145`	`1145`	`gum_arm64_writer_put_pop_reg_reg (aw, ARM64_REG_Q0 + i, ARM64_REG_Q1 + i);`
`1146`	`1146`
`1147`	`1147`	`gum_arm64_writer_put_pop_reg_reg (aw, ARM64_REG_X16, ARM64_REG_X17);`
	`1148`	`+#ifndef HAVE_PTRAUTH`
`1148`	`1149`	`gum_arm64_writer_put_ret_reg (aw, ARM64_REG_X16);`
	`1150`	`+#else`
	`1151`	`+ gum_arm64_writer_put_br_reg (aw, ARM64_REG_X16);`
	`1152`	`+#endif`
`1149`	`1153`	`}`