gem5 semihosting

baremetal/arch/aarch64/no_bootloader/semihost_exit.S

@@ -0,0 +1,10 @@
+.global mystart
+mystart:
+    mov x1, #0x26
+    movk x1, #2, lsl #16
+    str x1, [sp,#0]
+    mov x0, #0
+    str x0, [sp,#8]
+    mov x1, sp
+    mov w0, #0x18
+    hlt 0xf000

baremetal/interactive/README.adoc

@@ -0,0 +1 @@
+This folder contains examples that are not very testable: either are supposed to return 0, or are interactive, etc.

baremetal/interactive/exit1.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+void main(void) {
+	exit(1);
+}