fix(x86_64): exception handling

Author: AsakuraMizu

src/x86_64/trap.S

@@ -3,7 +3,7 @@
 .altmacro
 .macro DEF_HANDLER, i
 .Ltrap_handler_\i:
-.if \i == 8 || (\i >= 10 && \i <= 14) || \i == 17
+.if \i == 8 || (\i >= 10 && \i <= 14) || \i == 17 || \i == 21 || \i == 29 || \i == 30
     # error code pushed by CPU
     push    \i          # interrupt vector
     jmp     .Ltrap_common

src/x86_64/trap.rs

@@ -70,7 +70,8 @@ fn err_code_to_flags(err_code: u64) -> Result<PageFaultFlags, u64> {
     let code = PageFaultErrorCode::from_bits_truncate(err_code);
     let reserved_bits = (PageFaultErrorCode::CAUSED_BY_WRITE
         | PageFaultErrorCode::USER_MODE
-        | PageFaultErrorCode::INSTRUCTION_FETCH)
+        | PageFaultErrorCode::INSTRUCTION_FETCH
+        | PageFaultErrorCode::PROTECTION_VIOLATION)
         .complement();
     if code.intersects(reserved_bits) {
         Err(err_code)