From: Arnd Bergmann <arnd@kernel.org>
To: Hartley Sweeten <hsweeten@visionengravers.com>,
Alexander Sverdlin <alexander.sverdlin@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
Nick Desaulniers <ndesaulniers@google.com>,
Russell King <linux@armlinux.org.uk>,
linux-kernel@vger.kernel.org,
Nathan Chancellor <nathan@kernel.org>,
clang-built-linux@googlegroups.com, soc@kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: ep93xx: don't use clang IAS for crunch
Date: Fri, 26 Feb 2021 17:43:31 +0100 [thread overview]
Message-ID: <20210226164345.3889993-1-arnd@kernel.org> (raw)
From: Arnd Bergmann <arnd@arndb.de>
Randconfig builds with ep93xx fail with the clang integrated
assembler that does not understand the maverick crunch extensions:
arch/arm/mach-ep93xx/crunch-bits.S:94:2: error: invalid instruction
cfstr64 mvdx0, [r1, #0] @ save 64b registers
It is unclear if anyone is still using support for crunch: gcc-4.8 dropped
it in 2012 when it was already too broken to be used reliabled. glibc
support existed as an external patch but was never merged upstream.
We could consider removing the last bits of the kernel support as well.
Turn off the integrated assembler for this file for now.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
arch/arm/mach-ep93xx/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/mach-ep93xx/Makefile b/arch/arm/mach-ep93xx/Makefile
index 86768495f61d..f686577ba059 100644
--- a/arch/arm/mach-ep93xx/Makefile
+++ b/arch/arm/mach-ep93xx/Makefile
@@ -7,7 +7,7 @@ obj-y := core.o clock.o timer-ep93xx.o
obj-$(CONFIG_EP93XX_DMA) += dma.o
obj-$(CONFIG_CRUNCH) += crunch.o crunch-bits.o
-AFLAGS_crunch-bits.o := -Wa,-mcpu=ep9312
+AFLAGS_crunch-bits.o := -Wa,-mcpu=ep9312 $(cc-option, -fno-integrated-as)
obj-$(CONFIG_MACH_ADSSPHERE) += adssphere.o
obj-$(CONFIG_MACH_EDB93XX) += edb93xx.o
--
2.29.2
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next reply other threads:[~2021-02-26 16:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-26 16:43 Arnd Bergmann [this message]
2021-02-26 18:00 ` [PATCH] ARM: ep93xx: don't use clang IAS for crunch Arnd Bergmann
2021-06-03 23:27 ` Nick Desaulniers
2021-02-26 19:23 ` Alexander Sverdlin
2021-02-26 19:32 ` Hartley Sweeten
2021-02-26 20:47 ` Nick Desaulniers
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