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28 lines
1.0 KiB
28 lines
1.0 KiB
From 5f7cda29add367c5381775a314ec9f90e311457a Mon Sep 17 00:00:00 2001
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From: Rosen Penev <rosenp@gmail.com>
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Date: Fri, 15 Nov 2019 12:43:50 -0800
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Subject: [PATCH] cpu_relax: Fix MIPS check
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BOOST_ARCH_MIPS as a macro is totally broken. It always gets defined to either 32
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or 64 with a bunch of zeroes depending on the architecture.
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Use GCC's internal define to check the architecture properly.
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Signed-off-by: Rosen Penev <rosenp@gmail.com>
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---
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boost/fiber/detail/cpu_relax.hpp | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/boost/fiber/detail/cpu_relax.hpp b/boost/fiber/detail/cpu_relax.hpp
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index 72564394..f40545c2 100644
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--- a/boost/fiber/detail/cpu_relax.hpp
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+++ b/boost/fiber/detail/cpu_relax.hpp
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@@ -47,7 +47,7 @@ namespace detail {
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# else
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# define cpu_relax() asm volatile ("nop" ::: "memory");
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# endif
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-#elif BOOST_ARCH_MIPS
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+#elif BOOST_ARCH_MIPS && (__mips_isa_rev > 1)
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# define cpu_relax() asm volatile ("pause" ::: "memory");
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#elif BOOST_ARCH_PPC
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// http://code.metager.de/source/xref/gnu/glibc/sysdeps/powerpc/sys/platform/ppc.h
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