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Message-Id: <20210627220544.8757-3-rdunlap@infradead.org>
Date: Sun, 27 Jun 2021 15:05:43 -0700
From: Randy Dunlap <rdunlap@...radead.org>
To: linux-kernel@...r.kernel.org
Cc: Randy Dunlap <rdunlap@...radead.org>,
Yoshinori Sato <ysato@...rs.sourceforge.jp>,
Rich Felker <dalias@...c.org>, linux-sh@...r.kernel.org,
John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH 2/3 v2] sh: define __BIG_ENDIAN for math-emu
Fix this by defining both ENDIAN macros in
<asm/sfp-machine.h> so that they can be utilized in
<math-emu/soft-fp.h> according to the latter's comment:
/* Allow sfp-machine to have its own byte order definitions. */
(This is what is done in arch/nds32/include/asm/sfp-machine.h.)
This placates these build warnings:
In file included from ../arch/sh/math-emu/math.c:23:
../include/math-emu/single.h:50:21: warning: "__BIG_ENDIAN" is not defined, evaluates to 0 [-Wundef]
50 | #if __BYTE_ORDER == __BIG_ENDIAN
In file included from ../arch/sh/math-emu/math.c:24:
../include/math-emu/double.h:59:21: warning: "__BIG_ENDIAN" is not defined, evaluates to 0 [-Wundef]
59 | #if __BYTE_ORDER == __BIG_ENDIAN
Fixes: 4b565680d163 ("sh: math-emu support")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Yoshinori Sato <ysato@...rs.sourceforge.jp>
Cc: Rich Felker <dalias@...c.org>
Cc: linux-sh@...r.kernel.org
Cc: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
v2: use same preprocessor method that nds32 does;
add Geert's Reviewed-by;
renumber patches;
add more Cc's;
arch/sh/include/asm/sfp-machine.h | 8 ++++++++
1 file changed, 8 insertions(+)
--- linux-next-20210625.orig/arch/sh/include/asm/sfp-machine.h
+++ linux-next-20210625/arch/sh/include/asm/sfp-machine.h
@@ -13,6 +13,14 @@
#ifndef _SFP_MACHINE_H
#define _SFP_MACHINE_H
+#ifdef __BIG_ENDIAN__
+#define __BYTE_ORDER __BIG_ENDIAN
+#define __LITTLE_ENDIAN 0
+#else
+#define __BYTE_ORDER __LITTLE_ENDIAN
+#define __BIG_ENDIAN 0
+#endif
+
#define _FP_W_TYPE_SIZE 32
#define _FP_W_TYPE unsigned long
#define _FP_WS_TYPE signed long
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