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authorGravatar Hugues de Valon <hugues.devalon@arm.com> 2020-10-02 17:12:43 +0100
committerGravatar Hugues de Valon <hugues.devalon@arm.com> 2020-10-02 17:39:36 +0100
commit7102bd4c048d96f65f79f32c1f0b1c59e1a32a51 (patch)
tree06c7b191bc4d92137762ba88a8aa072426d36bda /asm/inline.rs
parent43b9383cbedc5b0fb0b2df51df0e7af742fb7b61 (diff)
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Add some Armv8-M assembly routines
Adds access to MSP_NS and the BXNS instruction. Also adds __dsb which was missing. Signed-off-by: Hugues de Valon <hugues.devalon@arm.com>
Diffstat (limited to 'asm/inline.rs')
-rw-r--r--asm/inline.rs17
1 files changed, 17 insertions, 0 deletions
diff --git a/asm/inline.rs b/asm/inline.rs
index 3fbba92..9a0c66e 100644
--- a/asm/inline.rs
+++ b/asm/inline.rs
@@ -308,6 +308,23 @@ mod v8m {
asm!("ttat {target}, {target}", target = inout(reg) target);
target
}
+
+ #[inline(always)]
+ pub unsafe fn __msp_ns_r() -> u32 {
+ let r;
+ asm!("mrs {}, MSP_NS", out(reg) r);
+ r
+ }
+
+ #[inline(always)]
+ pub unsafe fn __msp_ns_w(val: u32) {
+ asm!("msr MSP_NS, {}", in(reg) val);
+ }
+
+ #[inline(always)]
+ pub unsafe fn __bxns(val: u32) {
+ asm!("BXNS {}", in(reg) val);
+ }
}
#[cfg(armv8m_main)]