D21192.diff
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	Index: head/sys/arm64/arm64/freebsd32_machdep.c
	===================================================================
	--- head/sys/arm64/arm64/freebsd32_machdep.c
	+++ head/sys/arm64/arm64/freebsd32_machdep.c
	@@ -34,6 +34,7 @@
	#include <sys/syscallsubr.h>
	#include <sys/ktr.h>
	#include <sys/sysent.h>
	+#include <sys/sysproto.h>
	#include <machine/armreg.h>
	#ifdef VFP
	#include <machine/vfp.h>
	@@ -410,3 +411,30 @@
	mtx_lock(&psp->ps_mtx);

	}
	+
	+#ifdef COMPAT_43
	+/*
	+ * COMPAT_FREEBSD32 assumes we have this system call when COMPAT_43 is defined.
	+ * FreeBSD/arm provies a similar getpagesize() syscall.
	+ */
	+#define ARM32_PAGE_SIZE 4096
	+int
	+ofreebsd32_getpagesize(struct thread *td,
	+ struct ofreebsd32_getpagesize_args *uap)
	+{
	+
	+ td->td_retval[0] = ARM32_PAGE_SIZE;
	+ return (0);
	+}
	+
	+/*
	+ * Mirror the osigreturn definition in kern_sig.c for !i386 platforms. This
	+ * mirrors what's connected to the FreeBSD/arm syscall.
	+ */
	+int
	+ofreebsd32_sigreturn(struct thread td, struct ofreebsd32_sigreturn_args uap)
	+{
	+
	+ return (nosys(td, (struct nosys_args *)uap));
	+}
	+#endif