stable by default, remove exception module, add SCB.vect_active, ..

tweak Exception enum to match CMSIS names, document the parts of the API that require opting into
`"inline-asm"`.

1 files changed, 0 insertions, 72 deletions

diff --git a/src/exception.rs b/src/exception.rs
deleted file mode 100644
index b40cf1b..0000000
--- a/src/exception.rs
+++ /dev/null
@@ -1,72 +0,0 @@
-//! Exceptions
-
-/// Enumeration of all the exception types
-#[derive(Clone, Copy, Debug, Eq, PartialEq)]
-pub enum Exception {
-    /// Non-maskable interrupt
-    NMI,
-    /// Other type of faults and unhandled faults
-    HardFault,
-    /// Memory protection related fault
-    MenManage,
-    /// Pre-fetch or memory access fault
-    BusFault,
-    /// Fault due to undefined instruction or illegal state
-    UsageFault,
-    /// Supervisor call
-    SVCall,
-    /// Pendable request for system-level service
-    PendSV,
-    /// System timer exception
-    SysTick,
-    /// An interrupt
-    Interrupt(u8),
-    // Unreachable variant
-    #[doc(hidden)] Reserved,
-}
-
-impl Exception {
-    /// Returns the type of the exception that's currently active
-    ///
-    /// Returns `None` if no exception is currently active
-    pub fn active() -> Option<Exception> {
-        // NOTE(safe) atomic read with no side effects
-        let icsr = unsafe { (*::peripheral::SCB::ptr()).icsr.read() };
-
-        Some(match icsr as u8 {
-            0 => return None,
-            2 => Exception::NMI,
-            3 => Exception::HardFault,
-            4 => Exception::MenManage,
-            5 => Exception::BusFault,
-            6 => Exception::UsageFault,
-            11 => Exception::SVCall,
-            14 => Exception::PendSV,
-            15 => Exception::SysTick,
-            n if n >= 16 => Exception::Interrupt(n - 16),
-            _ => Exception::Reserved,
-        })
-    }
-}
-
-/// Registers stacked (pushed into the stack) during an exception
-#[derive(Clone, Copy, Debug)]
-#[repr(C)]
-pub struct ExceptionFrame {
-    /// (General purpose) Register 0
-    pub r0: u32,
-    /// (General purpose) Register 1
-    pub r1: u32,
-    /// (General purpose) Register 2
-    pub r2: u32,
-    /// (General purpose) Register 3
-    pub r3: u32,
-    /// (General purpose) Register 12
-    pub r12: u32,
-    /// Linker Register
-    pub lr: u32,
-    /// Program Counter
-    pub pc: u32,
-    /// Program Status Register
-    pub xpsr: u32,
-}