Commit f3c003f7 authored Jan 07, 2014 by Jiang Liu Committed by Catalin Marinas Jan 08, 2014

arm64, jump label: detect %c support for ARM64



As commit a9468f30 "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.

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jiang Liu <liuj97@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

parent 5c5bf25d

scripts/gcc-goto.sh

+1 −1

Original line number	Diff line number	Diff line
		@@ -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).

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