From e273317811820976dda632b0893960646d6e1119 Mon Sep 17 00:00:00 2001
From: Valery Ushakov <uwe@stderr.spb.ru>
Date: Mon, 4 Jan 2021 03:00:19 +0300
Subject: NetBSD/arm: segflush - use mprotect to add PROT_EXEC

ARM has separate read and execute protection bits so after writing out
JIT code we need to make it executable.
---
 emu/NetBSD/segflush-arm.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'emu')

diff --git a/emu/NetBSD/segflush-arm.c b/emu/NetBSD/segflush-arm.c
index f4529633..a03b438b 100644
--- a/emu/NetBSD/segflush-arm.c
+++ b/emu/NetBSD/segflush-arm.c
@@ -1,4 +1,5 @@
 #include <sys/types.h>
+#include <sys/mman.h>
 #include <machine/sysarch.h>
 
 #include "dat.h"
@@ -9,6 +10,8 @@ segflush(void *a, ulong n)
 {
 	struct arm_sync_icache_args args;
 
+	mprotect(a, (size_t)n, PROT_READ | PROT_WRITE | PROT_EXEC);
+
 	args.addr = (uintptr_t)a;
 	args.len = (size_t)n;
 	sysarch(ARM_SYNC_ICACHE, (void *)&args);
-- 
cgit v1.2.3