From 0c988f92dc47091498e4aad01a8505253c8e9111 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Thu, 10 Feb 2022 14:26:46 -0700
Subject: [PATCH] arm: Add static asssert for context size

Add a static assert for the siginfo_t, mcontext_t and ucontext_t
sizes. These are de-facto ABI options and cannot change size ever.

Reviewed by:		andrew
Differential Revision:	https://reviews.freebsd.org/D34210
---
 sys/arm/arm/exec_machdep.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sys/arm/arm/exec_machdep.c b/sys/arm/arm/exec_machdep.c
index 865fc4d8628..fdd57d7859c 100644
--- a/sys/arm/arm/exec_machdep.c
+++ b/sys/arm/arm/exec_machdep.c
@@ -69,6 +69,10 @@ __FBSDID("$FreeBSD$");
 #include <vm/pmap.h>
 #include <vm/vm_map.h>
 
+_Static_assert(sizeof(mcontext_t) == 208, "mcontext_t size incorrect");
+_Static_assert(sizeof(ucontext_t) == 260, "ucontext_t size incorrect");
+_Static_assert(sizeof(siginfo_t) == 64, "siginfo_t size incorrect");
+
 /*
  * Clear registers on exec
  */