rename disable/enable interrupt functions (#126)

src/interrupt.zig

@@ -22,14 +22,14 @@ pub fn is_enabled(comptime interrupt: anytype) bool {
 
 /// *Set Enable Interrupt*, will enable IRQs globally, but keep the masking done via
 /// `enable` and `disable` intact.
-pub fn sei() void {
-    micro.cpu.sei();
+pub fn enable_interrupts() void {
+    micro.cpu.enable_interrupts();
 }
 
 /// *Clear Enable Interrupt*, will disable IRQs globally, but keep the masking done via
 /// `enable` and `disable` intact.
-pub fn cli() void {
-    micro.cpu.cli();
+pub fn disable_interrupts() void {
+    micro.cpu.disable_interrupts();
 }
 
 /// Returns true, when interrupts are globally enabled via `sei()`.
@@ -43,7 +43,7 @@ pub fn enter_critical_section() CriticalSection {
     var section = CriticalSection{
         .enable_on_leave = globally_enabled(),
     };
-    cli();
+    disable_interrupts();
     return section;
 }
 
@@ -55,7 +55,7 @@ const CriticalSection = struct {
     /// Leaves the critical section and restores the interrupt state.
     pub fn leave(self: @This()) void {
         if (self.enable_on_leave) {
-            sei();
+            enable_interrupts();
         }
     }
 };

src/microzig.zig

@@ -63,9 +63,8 @@ pub fn panic(message: []const u8, _: ?*std.builtin.StackTrace, _: ?usize) noretu
 
 /// Hangs the processor and will stop doing anything useful. Use with caution!
 pub fn hang() noreturn {
+    cpu.disable_interrupts();
     while (true) {
-        interrupt.cli();
-
         // "this loop has side effects, don't optimize the endless loop away please. thanks!"
         asm volatile ("" ::: "memory");
     }

src/modules/cpus/cortex-m.zig

@@ -27,11 +27,11 @@ pub fn executing_isr() bool {
     return regs.ICSR.read().VECTACTIVE != 0;
 }
 
-pub fn sei() void {
+pub fn enable_interrupts() void {
     asm volatile ("cpsie i");
 }
 
-pub fn cli() void {
+pub fn disable_interrupts() void {
     asm volatile ("cpsid i");
 }
 

test/cpu.zig

@@ -1,3 +1,4 @@
 pub const startup_logic = struct {};
 
-pub fn cli() void {}
+pub fn enable_interrupts() void {}
+pub fn disable_interrupts() void {}