62 lines
2.1 KiB
Diff
62 lines
2.1 KiB
Diff
Build i386.rpm libgomp and libsupc++.a(guard.o) as i486+, pre-i486
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hardware isn't supported because NPTL doesn't support it anyway.
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--- libgomp/configure.tgt.jj 2008-01-10 20:53:48.000000000 +0100
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+++ libgomp/configure.tgt 2008-03-27 12:44:51.000000000 +0100
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@@ -44,14 +44,14 @@ if test $enable_linux_futex = yes; then
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;;
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# Note that bare i386 is not included here. We need cmpxchg.
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- i[456]86-*-linux*)
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+ i[3456]86-*-linux*)
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config_path="linux/x86 linux posix"
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case " ${CC} ${CFLAGS} " in
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*" -m64 "*)
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;;
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*)
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if test -z "$with_arch"; then
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- XCFLAGS="${XCFLAGS} -march=i486 -mtune=${target_cpu}"
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+ XCFLAGS="${XCFLAGS} -march=i486 -mtune=generic"
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fi
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esac
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;;
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@@ -63,7 +63,7 @@ if test $enable_linux_futex = yes; then
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config_path="linux/x86 linux posix"
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case " ${CC} ${CFLAGS} " in
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*" -m32 "*)
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- XCFLAGS="${XCFLAGS} -march=i486 -mtune=i686"
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+ XCFLAGS="${XCFLAGS} -march=i486 -mtune=generic"
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;;
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esac
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;;
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--- libstdc++-v3/libsupc++/guard.cc.jj 2008-03-01 00:58:24.000000000 +0100
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+++ libstdc++-v3/libsupc++/guard.cc 2008-03-27 14:08:44.000000000 +0100
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@@ -35,6 +35,27 @@
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#include <new>
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#include <ext/atomicity.h>
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#include <ext/concurrence.h>
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+#if defined __i386__ && !defined _GLIBCXX_ATOMIC_BUILTINS_4
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+# define _GLIBCXX_ATOMIC_BUILTINS_4 1
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+# define __sync_val_compare_and_swap(a, b, c) \
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+ ({ \
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+ typedef char sltast[sizeof (*a) == sizeof (int) ? 1 : -1]; \
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+ int sltas; \
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+ __asm __volatile ("lock; cmpxchgl %3, (%1)" \
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+ : "=a" (sltas) \
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+ : "r" (a), "0" (b), "r" (c) : "memory"); \
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+ sltas; \
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+ })
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+# define __sync_lock_test_and_set(a, b) \
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+ ({ \
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+ typedef char sltast[sizeof (*a) == sizeof (int) ? 1 : -1]; \
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+ int sltas; \
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+ __asm __volatile ("xchgl (%1), %0" \
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+ : "=r" (sltas) \
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+ : "r" (a), "0" (b) : "memory"); \
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+ sltas; \
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+ })
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+#endif
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#if defined(__GTHREADS) && defined(__GTHREAD_HAS_COND) \
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&& defined(_GLIBCXX_ATOMIC_BUILTINS_4) && defined(_GLIBCXX_HAVE_LINUX_FUTEX)
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# include <climits>
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