fix exception vectors

experiments/link.x

@@ -1,14 +1,4 @@
-ENTRY(_boot_cores);
+ENTRY(Reset);
-
-/* Provide some defaults */
-PROVIDE(Reset = _boot_cores);
-PROVIDE(UndefinedInstruction = Reset);
-PROVIDE(SoftwareInterrupt = Reset);
-PROVIDE(PrefetchAbort = Reset);
-PROVIDE(DataAbort = Reset);
-PROVIDE(ReservedException = Reset);
-PROVIDE(IRQ = Reset);
-PROVIDE(FIQ = Reset);
 
 MEMORY
 {

libsupport_zynq/src/abort.rs

@@ -2,16 +2,36 @@ use libregister::RegisterR;
 use libcortex_a9::regs::{DFSR, MPIDR};
 use libboard_zynq::{println, slcr, stdio};
 
+#[link_section = ".text.boot"]
 #[no_mangle]
-pub unsafe extern "C" fn PrefetchAbort() {
+#[naked]
+pub unsafe extern "C" fn UndefinedInstruction() {
     stdio::drop_uart();
-
+    println!("UndefinedInstruction");
-    println!("PrefetchAbort");
-
     loop {}
 }
 
+#[link_section = ".text.boot"]
 #[no_mangle]
+#[naked]
+pub unsafe extern "C" fn SoftwareInterrupt() {
+    stdio::drop_uart();
+    println!("SoftwareInterrupt");
+    loop {}
+}
+
+#[link_section = ".text.boot"]
+#[no_mangle]
+#[naked]
+pub unsafe extern "C" fn PrefetchAbort() {
+    stdio::drop_uart();
+    println!("PrefetchAbort");
+    loop {}
+}
+
+#[link_section = ".text.boot"]
+#[no_mangle]
+#[naked]
 pub unsafe extern "C" fn DataAbort() {
     stdio::drop_uart();
 
@@ -21,3 +41,30 @@ pub unsafe extern "C" fn DataAbort() {
 
     loop {}
 }
+
+#[link_section = ".text.boot"]
+#[no_mangle]
+#[naked]
+pub unsafe extern "C" fn ReservedException() {
+    stdio::drop_uart();
+    println!("ReservedException");
+    loop {}
+}
+
+#[link_section = ".text.boot"]
+#[no_mangle]
+#[naked]
+pub unsafe extern "C" fn IRQ() {
+    stdio::drop_uart();
+    println!("IRQ");
+    loop {}
+}
+
+#[link_section = ".text.boot"]
+#[no_mangle]
+#[naked]
+pub unsafe extern "C" fn FIQ() {
+    stdio::drop_uart();
+    println!("FIQ");
+    loop {}
+}

libsupport_zynq/src/boot.rs

@@ -21,7 +21,7 @@ static mut CORE1_ENABLED: VolatileCell<bool> = VolatileCell::new(false);
 #[link_section = ".text.boot"]
 #[no_mangle]
 #[naked]
-pub unsafe extern "C" fn _boot_cores() -> ! {
+pub unsafe extern "C" fn Reset() -> ! {
     const CORE_MASK: u32 = 0x3;
 
     match MPIDR.read() & CORE_MASK {