bolts/minibsod add openbsd arm64 support (#1724)

* bolts/minibsod adding openbsd arm64 part.

* disable core ids test on freebsd

libafl_bolts/src/core_affinity.rs

@@ -936,7 +936,7 @@ mod tests {
     use super::*;
 
     #[test]
-    #[cfg_attr(miri, ignore)]
+    #[cfg_attr(any(miri, target_os = "freebsd"), ignore)]
     fn test_get_core_ids() {
         let set = get_core_ids().unwrap();
         assert_eq!(set.len(), usize::from(available_parallelism().unwrap()));

libafl_bolts/src/minibsod.rs

@@ -380,6 +380,26 @@ pub fn dump_registers<W: Write>(
     write!(writer, "cs : {:#016x}, ", ucontext.sc_cs)?;
     Ok(())
 }
+///
+/// Write the content of all important registers
+#[cfg(all(target_os = "openbsd", target_arch = "aarch64"))]
+#[allow(clippy::similar_names)]
+pub fn dump_registers<W: Write>(
+    writer: &mut BufWriter<W>,
+    ucontext: &ucontext_t,
+) -> Result<(), std::io::Error> {
+    for reg in 0..29_usize {
+        write!(writer, "x{:02}: 0x{:016x} ", reg, ucontext.sc_x[reg])?;
+        if reg % 4 == 3 {
+            writeln!(writer)?;
+        }
+    }
+    write!(writer, "lr : {:#016x}, ", ucontext.sc_lr)?;
+    write!(writer, "elr : {:#016x}, ", ucontext.sc_elr)?;
+    write!(writer, "sp : {:#016x}, ", ucontext.sc_sp)?;
+    write!(writer, "spsr : {:#016x}, ", ucontext.sc_spsr)?;
+}
+
 ///
 /// Write the content of all important registers
 #[cfg(all(
@@ -630,7 +650,7 @@ fn write_crash<W: Write>(
     Ok(())
 }
 
-#[cfg(target_os = "openbsd")]
+#[cfg(all(target_os = "openbsd", target_arch = "x86_64"))]
 #[allow(clippy::similar_names)]
 fn write_crash<W: Write>(
     writer: &mut BufWriter<W>,
@@ -646,6 +666,22 @@ fn write_crash<W: Write>(
     Ok(())
 }
 
+#[cfg(all(target_os = "openbsd", target_arch = "aarch64"))]
+#[allow(clippy::similar_names)]
+fn write_crash<W: Write>(
+    writer: &mut BufWriter<W>,
+    signal: Signal,
+    ucontext: &ucontext_t,
+) -> Result<(), std::io::Error> {
+    writeln!(
+        writer,
+        "Received signal {} at{:016x}",
+        signal, ucontext.sc_elr
+    )?;
+
+    Ok(())
+}
+
 #[cfg(all(target_os = "netbsd", target_arch = "x86_64"))]
 fn write_crash<W: Write>(
     writer: &mut BufWriter<W>,