Merge #311

311: Duplicate compiler fences around barrier instrs r=adamgreig a=jonas-schievink

This should fix https://github.com/rust-embedded/cortex-m/issues/308

Co-authored-by: Jonas Schievink <jonasschievink@gmail.com>

15 files changed, 3 insertions, 0 deletions

diff --git a/asm/inline.rs b/asm/inline.rs
index f2014f8..9150c9c 100644
--- a/asm/inline.rs
+++ b/asm/inline.rs
@@ -64,18 +64,21 @@ pub unsafe fn __delay(cyc: u32) {
 
 #[inline(always)]
 pub unsafe fn __dmb() {
+    compiler_fence(Ordering::SeqCst);
     asm!("dmb");
     compiler_fence(Ordering::SeqCst);
 }
 
 #[inline(always)]
 pub unsafe fn __dsb() {
+    compiler_fence(Ordering::SeqCst);
     asm!("dsb");
     compiler_fence(Ordering::SeqCst);
 }
 
 #[inline(always)]
 pub unsafe fn __isb() {
+    compiler_fence(Ordering::SeqCst);
     asm!("isb");
     compiler_fence(Ordering::SeqCst);
 }
diff --git a/bin/thumbv6m-none-eabi-lto.a b/bin/thumbv6m-none-eabi-lto.a
index f3858a0..1b0e77a 100644
--- a/bin/thumbv6m-none-eabi-lto.a
+++ b/bin/thumbv6m-none-eabi-lto.a
diff --git a/bin/thumbv6m-none-eabi.a b/bin/thumbv6m-none-eabi.a
index 571396b..6835c5b 100644
--- a/bin/thumbv6m-none-eabi.a
+++ b/bin/thumbv6m-none-eabi.a
diff --git a/bin/thumbv7em-none-eabi-lto.a b/bin/thumbv7em-none-eabi-lto.a
index 51e02c6..0a42c47 100644
--- a/bin/thumbv7em-none-eabi-lto.a
+++ b/bin/thumbv7em-none-eabi-lto.a
diff --git a/bin/thumbv7em-none-eabi.a b/bin/thumbv7em-none-eabi.a
index d6ccf53..aeef3ab 100644
--- a/bin/thumbv7em-none-eabi.a
+++ b/bin/thumbv7em-none-eabi.a
diff --git a/bin/thumbv7em-none-eabihf-lto.a b/bin/thumbv7em-none-eabihf-lto.a
index cc52e63..6d5e7cf 100644
--- a/bin/thumbv7em-none-eabihf-lto.a
+++ b/bin/thumbv7em-none-eabihf-lto.a
diff --git a/bin/thumbv7em-none-eabihf.a b/bin/thumbv7em-none-eabihf.a
index aea284d..dd4f80d 100644
--- a/bin/thumbv7em-none-eabihf.a
+++ b/bin/thumbv7em-none-eabihf.a
diff --git a/bin/thumbv7m-none-eabi-lto.a b/bin/thumbv7m-none-eabi-lto.a
index 85720da..66b6be3 100644
--- a/bin/thumbv7m-none-eabi-lto.a
+++ b/bin/thumbv7m-none-eabi-lto.a
diff --git a/bin/thumbv7m-none-eabi.a b/bin/thumbv7m-none-eabi.a
index d9cf989..cdae52f 100644
--- a/bin/thumbv7m-none-eabi.a
+++ b/bin/thumbv7m-none-eabi.a
diff --git a/bin/thumbv8m.base-none-eabi-lto.a b/bin/thumbv8m.base-none-eabi-lto.a
index 37e74a9..59c6510 100644
--- a/bin/thumbv8m.base-none-eabi-lto.a
+++ b/bin/thumbv8m.base-none-eabi-lto.a
diff --git a/bin/thumbv8m.base-none-eabi.a b/bin/thumbv8m.base-none-eabi.a
index 0660245..a300490 100644
--- a/bin/thumbv8m.base-none-eabi.a
+++ b/bin/thumbv8m.base-none-eabi.a
diff --git a/bin/thumbv8m.main-none-eabi-lto.a b/bin/thumbv8m.main-none-eabi-lto.a
index 4312c64..4306526 100644
--- a/bin/thumbv8m.main-none-eabi-lto.a
+++ b/bin/thumbv8m.main-none-eabi-lto.a
diff --git a/bin/thumbv8m.main-none-eabi.a b/bin/thumbv8m.main-none-eabi.a
index 59affcc..5f0b282 100644
--- a/bin/thumbv8m.main-none-eabi.a
+++ b/bin/thumbv8m.main-none-eabi.a
diff --git a/bin/thumbv8m.main-none-eabihf-lto.a b/bin/thumbv8m.main-none-eabihf-lto.a
index 62fcad3..cc62761 100644
--- a/bin/thumbv8m.main-none-eabihf-lto.a
+++ b/bin/thumbv8m.main-none-eabihf-lto.a
diff --git a/bin/thumbv8m.main-none-eabihf.a b/bin/thumbv8m.main-none-eabihf.a
index f7795d1..cd688ac 100644
--- a/bin/thumbv8m.main-none-eabihf.a
+++ b/bin/thumbv8m.main-none-eabihf.a