From 17729d44daf879e015950b0e9636afceefea0a59 Mon Sep 17 00:00:00 2001
From: Jessica Clarke <jrtc27@jrtc27.com>
Date: Sun, 11 Jul 2021 03:28:24 +0100
Subject: lib: utils: Drop dependency on libgcc by importing part of FreeBSD's
 libquad

We only need libgcc for 64-bit division on RV32. Whilst GCC toolchains
bundle libgcc, Clang toolchains tend not to ship libclang_rt.builtins
given every compiler is a cross-compiler for every target and so you
would need a silly number of builds of it, with only the native library
available; only vendor-provided Clang toolchains specifically for bare
metal cross-compiling are likely to provide it.

Thus, import part of FreeBSD's implementation of the division support
functions needed and stop linking against libgcc.

Signed-off-by: Jessica Clarke <jrtc27@jrtc27.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Tested-by: Anup Patel <anup.patel@wdc.com>
---
 lib/utils/libquad/include/sys/cdefs.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 lib/utils/libquad/include/sys/cdefs.h

(limited to 'lib/utils/libquad/include/sys/cdefs.h')

diff --git a/lib/utils/libquad/include/sys/cdefs.h b/lib/utils/libquad/include/sys/cdefs.h
new file mode 100644
index 0000000..e8d6faa
--- /dev/null
+++ b/lib/utils/libquad/include/sys/cdefs.h
@@ -0,0 +1,12 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2021 Jessica Clarke <jrtc27@jrtc27.com>
+ */
+
+#ifndef __SYS_CDEFS_H__
+#define __SYS_CDEFS_H__
+
+#define __FBSDID(s) struct __hack
+
+#endif
-- 
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