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authorGravatar Adam Greig <adam@adamgreig.com> 2022-02-25 01:57:16 +0000
committerGravatar Adam Greig <adam@adamgreig.com> 2022-02-25 01:58:23 +0000
commitac2a8365721b453f005feb7fe1fb25615f76af7c (patch)
treebc59ffdd19ed3aa6e9b3738bfbedc954f4ecda9c
parentb49bcbe9fd6bbc36874a6d763c07b97aca8df71f (diff)
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Put inline asm directly into cortex-m-semihosting so it doesn't need to depend on cortex-m 0.8
-rw-r--r--cortex-m-semihosting/src/lib.rs8
1 files changed, 7 insertions, 1 deletions
diff --git a/cortex-m-semihosting/src/lib.rs b/cortex-m-semihosting/src/lib.rs
index 186e7e7..8306307 100644
--- a/cortex-m-semihosting/src/lib.rs
+++ b/cortex-m-semihosting/src/lib.rs
@@ -194,7 +194,13 @@ pub unsafe fn syscall<T>(nr: usize, arg: &T) -> usize {
pub unsafe fn syscall1(_nr: usize, _arg: usize) -> usize {
match () {
#[cfg(all(thumb, not(feature = "no-semihosting")))]
- () => cortex_m::asm::semihosting_syscall(_nr as u32, _arg as u32) as usize,
+ () => {
+ use core::arch::asm;
+ let mut nr = _nr as u32;
+ let arg = _arg as u32;
+ asm!("bkpt #0xab", inout("r0") nr, in("r1") arg, options(nostack, preserves_flags));
+ nr as usize
+ }
#[cfg(all(thumb, feature = "no-semihosting"))]
() => 0,
#[cfg(not(thumb))]