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From: liuj97@gmail.com (Jiang Liu)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5 5/7] arm64, jump label: detect %c support for ARM64
Date: Fri, 18 Oct 2013 23:19:59 +0800	[thread overview]
Message-ID: <1382109602-27432-6-git-send-email-liuj97@gmail.com> (raw)
In-Reply-To: <1382109602-27432-1-git-send-email-liuj97@gmail.com>

From: Jiang Liu <jiang.liu@huawei.com>

As commit a9468f30b5eac6 "ARM: 7333/2: jump label: detect %c
support for ARM", this patch detects the same thing for ARM64
because some ARM64 GCC versions have the same issue.

Some versions of ARM64 GCC which do support asm goto, do not
support the %c specifier. Since we need the %c to support jump
labels on ARM64, detect that too in the asm goto detection script
to avoid build errors with these versions.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Jiang Liu <liuj97@gmail.com>
---
 scripts/gcc-goto.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/gcc-goto.sh b/scripts/gcc-goto.sh
index a2af2e8..c9469d3 100644
--- a/scripts/gcc-goto.sh
+++ b/scripts/gcc-goto.sh
@@ -5,7 +5,7 @@
 cat << "END" | $@ -x c - -c -o /dev/null >/dev/null 2>&1 && echo "y"
 int main(void)
 {
-#ifdef __arm__
+#if defined(__arm__) || defined(__aarch64__)
 	/*
 	 * Not related to asm goto, but used by jump label
 	 * and broken on some ARM GCC versions (see GCC Bug 48637).
-- 
1.8.1.2

  parent reply	other threads:[~2013-10-18 15:19 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-18 15:19 [PATCH v5 0/7] Optimize jump label implementation for ARM64 Jiang Liu
2013-10-18 15:19 ` [PATCH v5 1/7] arm64: introduce basic aarch64 instruction decoding helpers Jiang Liu
2013-10-31 17:39   ` Catalin Marinas
2013-11-06 15:10     ` Jiang Liu
2013-10-18 15:19 ` [PATCH v5 2/7] arm64: introduce interfaces to hotpatch kernel and module code Jiang Liu
2013-10-30  0:12   ` Will Deacon
2013-11-03 15:55     ` Jiang Liu
2013-11-04 15:12       ` Sandeepa Prabhu
2013-11-06 10:41         ` Will Deacon
2013-11-06 16:12           ` Jiang Liu
2013-11-06 18:09             ` Will Deacon
2013-11-27 12:20       ` Will Deacon
2013-11-27 15:40         ` Jiang Liu
2013-11-28 22:39       ` AKASHI Takahiro
2013-10-18 15:19 ` [PATCH v5 3/7] arm64: move encode_insn_immediate() from module.c to insn.c Jiang Liu
2013-10-18 15:19 ` [PATCH v5 4/7] arm64: introduce aarch64_insn_gen_{nop|branch_imm}() helper functions Jiang Liu
2013-10-30  0:48   ` Will Deacon
2013-11-06 16:31     ` Jiang Liu
2013-11-06 16:45     ` Steven Rostedt
2013-11-06 18:02       ` Will Deacon
2013-10-18 15:19 ` Jiang Liu [this message]
2013-10-30  0:49   ` [PATCH v5 5/7] arm64, jump label: detect %c support for ARM64 Will Deacon
2013-11-06 16:32     ` Jiang Liu
2013-10-18 15:20 ` [PATCH v5 6/7] arm64, jump label: optimize jump label implementation Jiang Liu
2013-10-30  0:55   ` Will Deacon
2013-11-06 16:38     ` Jiang Liu
2013-10-18 15:20 ` [PATCH v5 7/7] jump_label: use defined macros instead of hard-coding for better readability Jiang Liu

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