From ed8488345eaae41c161ab741b0c44299ee99dc6c Mon Sep 17 00:00:00 2001
From: s1341 <github@shmarya.net>
Date: Wed, 10 Aug 2016 14:57:22 +0200
Subject: [PATCH] arm: Fix cache flushing on QNX

Use `msync()` directly as `__clear_cache()` is broken in the
qnx650_gcc4.8.3 toolchain.
---
 src/arm/ffi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/arm/ffi.c b/src/arm/ffi.c
index c24085d3..124a128d 100644
--- a/src/arm/ffi.c
+++ b/src/arm/ffi.c
@@ -566,8 +566,13 @@ ffi_prep_closure_loc (ffi_closure * closure,
   config[1] = closure_func;
 #else
   memcpy (closure->tramp, ffi_arm_trampoline, 8);
+#if defined (__QNX__)
+  msync(closure->tramp, 8, 0x1000000);	/* clear data map */
+  msync(codeloc, 8, 0x1000000);	/* clear insn map */
+#else
   __clear_cache(closure->tramp, closure->tramp + 8);	/* clear data map */
   __clear_cache(codeloc, codeloc + 8);			/* clear insn map */
+#endif
   *(void (**)(void))(closure->tramp + 8) = closure_func;
 #endif