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| author |  Jonas Schievink <jonasschievink@gmail.com>
| 2020-08-31 23:19:01 +0200 |
|---|---|---|
| committer | Jonas Schievink <jonasschievink@gmail.com>
| 2020-10-13 21:31:36 +0200 |
| commit | d01bdda2fd40728810c2a989b248dd4f5d369a7b (patch) | |
| tree | 9458e40d5f5c9dac727f25afbc34989971d333c6 /asm/inline.rs | |
| parent | 10b29d3a4fc43503c25fb2c7ffbeaad44c2fb103 (diff) | |
| download | cortex-m-d01bdda2fd40728810c2a989b248dd4f5d369a7b.tar.gz cortex-m-d01bdda2fd40728810c2a989b248dd4f5d369a7b.tar.zst cortex-m-d01bdda2fd40728810c2a989b248dd4f5d369a7b.zip | |
Add __syscall assembly
Diffstat (limited to 'asm/inline.rs')
| -rw-r--r-- | asm/inline.rs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/asm/inline.rs b/asm/inline.rs index 9a0c66e..688604e 100644 --- a/asm/inline.rs +++ b/asm/inline.rs @@ -175,6 +175,13 @@ pub unsafe fn __wfi() { asm!("wfi"); } +/// Semihosting syscall. +#[inline(always)] +pub unsafe fn __syscall(mut nr: u32, arg: u32) -> u32 { + asm!("bkpt #0xab", inout("r0") nr, in("r1") arg); + nr +} + // v7m *AND* v8m.main, but *NOT* v8m.base #[cfg(any(armv7m, armv8m_main))] pub use self::v7m::*; |