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