From beed7433fb8dd80e6a395034aa90613c5d6d74fd Mon Sep 17 00:00:00 2001
From: Dario Nieuwenhuis <dirbaio@dirbaio.net>
Date: Fri, 12 Aug 2022 15:32:35 +0200
Subject: Add support for critical-section 1.0.

---
 nrf-softdevice/src/critical_section_impl.rs | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

(limited to 'nrf-softdevice/src/critical_section_impl.rs')

diff --git a/nrf-softdevice/src/critical_section_impl.rs b/nrf-softdevice/src/critical_section_impl.rs
index 59f9445..cb955fd 100644
--- a/nrf-softdevice/src/critical_section_impl.rs
+++ b/nrf-softdevice/src/critical_section_impl.rs
@@ -53,10 +53,11 @@ unsafe fn raw_critical_section<R>(f: impl FnOnce() -> R) -> R {
 }
 
 struct CriticalSection;
-critical_section::custom_impl!(CriticalSection);
+critical_section_1::set_impl!(CriticalSection);
+critical_section_02::custom_impl!(CriticalSection);
 
-unsafe impl critical_section::Impl for CriticalSection {
-    unsafe fn acquire() -> u8 {
+unsafe impl critical_section_1::Impl for CriticalSection {
+    unsafe fn acquire() -> bool {
         let nvic = &*NVIC::PTR;
         let nested_cs = CS_FLAG.load(Ordering::SeqCst);
 
@@ -74,14 +75,14 @@ unsafe impl critical_section::Impl for CriticalSection {
 
         compiler_fence(Ordering::SeqCst);
 
-        return nested_cs as u8;
+        nested_cs
     }
 
-    unsafe fn release(token: u8) {
+    unsafe fn release(nested_cs: bool) {
         compiler_fence(Ordering::SeqCst);
 
         let nvic = &*NVIC::PTR;
-        if token == 0 {
+        if !nested_cs {
             raw_critical_section(|| {
                 CS_FLAG.store(false, Ordering::Relaxed);
                 // restore only non-reserved irqs.
@@ -90,3 +91,13 @@ unsafe impl critical_section::Impl for CriticalSection {
         }
     }
 }
+
+unsafe impl critical_section_02::Impl for CriticalSection {
+    unsafe fn acquire() -> u8 {
+        <Self as critical_section_1::Impl>::acquire() as _
+    }
+
+    unsafe fn release(token: u8) {
+        <Self as critical_section_1::Impl>::release(token != 0)
+    }
+}
-- 
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