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Date: Tue, 27 Mar 2012 17:32:06 +0200 From: Denys Vlasenko <vda.linux@...glemail.com> To: roma1390 <roma1390@...il.com> Cc: linux-kernel@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>, Douglas W Jones <jones@...uiowa.edu>, Michal Nazarewicz <mnazarewicz@...gle.com> Subject: Re: [PATCH 0/1] vsprintf: optimize decimal conversion (again) On Tue, Mar 27, 2012 at 2:08 PM, roma1390 <roma1390@...il.com> wrote: > On 2012.03.26 21:47, Denys Vlasenko wrote: >> >> Please find test programs attached. >> >> 32-bit test programs were built using gcc 4.6.2 >> 64-bit test programs were built using gcc 4.2.1 >> Command line: gcc --static [-m32] -O2 -Wall test_{org,new}.c > > Can't compile reference for arm: > $ arm-linux-gnueabi-gcc -O2 -Wall test_org.c -o test_org > test_org.c: In function ‘put_dec’: > test_org.c:101: error: impossible constraint in ‘asm’ > test_org.c:101: error: impossible constraint in ‘asm’ > test_org.c:101: error: impossible constraint in ‘asm’ Problem is that test_header.c contains do_div() macro copied from x86 arch. Can you replace it with one taken from arm arch? You can find it in arch/arm/include/asm/div64.h, and __asmeq macro can be found in arch/arm/include/asm/system.h. -- vda arch/arm/include/asm/div64.h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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