70 lines
2.4 KiB
Diff
70 lines
2.4 KiB
Diff
commit b7f5b0a7114e29577daf64e68970673b61e5fcba
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Author: H.J. Lu <hjl.tools@gmail.com>
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Date: Mon Jun 10 13:02:06 2024 -0700
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x86: Properly set MINIMUM_X86_ISA_LEVEL for i386 [BZ #31867]
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On i386, set the default minimum ISA level to 0, not 1 (baseline which
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includes SSE2). There are no changes in config.h nor in config.make on
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x86-64. This fixes BZ #31867.
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Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
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Tested-by: Ian Jordan <immoloism@gmail.com>
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Reviewed-by: Sam James <sam@gentoo.org>
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Reviewed-by: Florian Weimer <fweimer@redhat.com>
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(cherry picked from commit 09bc68b0ac26331a0109f0578c9368e09176da18)
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diff --git a/sysdeps/x86/configure b/sysdeps/x86/configure
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index d28d9bcb296c6380..1e2325d0d7212d67 100644
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--- a/sysdeps/x86/configure
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+++ b/sysdeps/x86/configure
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@@ -139,8 +139,10 @@ libc_cv_have_x86_isa_level=4
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libc_cv_have_x86_isa_level=3
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#elif MINIMUM_X86_ISA_LEVEL == 2
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libc_cv_have_x86_isa_level=2
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-#else
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+#elif defined __x86_64__
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libc_cv_have_x86_isa_level=baseline
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+#else
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+libc_cv_have_x86_isa_level=MINIMUM_X86_ISA_LEVEL
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#endif
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EOF
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eval `${CC-cc} $CFLAGS $CPPFLAGS $ISAFLAG -I$srcdir -E conftest.c | grep libc_cv_have_x86_isa_level`
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@@ -148,8 +150,10 @@ EOF
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_x86_isa_level" >&5
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printf "%s\n" "$libc_cv_have_x86_isa_level" >&6; }
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-else
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+elif test $base_machine = x86_64; then
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libc_cv_have_x86_isa_level=baseline
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+else
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+ libc_cv_have_x86_isa_level=0
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fi
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if test $libc_cv_have_x86_isa_level = baseline; then
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printf "%s\n" "#define MINIMUM_X86_ISA_LEVEL 1" >>confdefs.h
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diff --git a/sysdeps/x86/configure.ac b/sysdeps/x86/configure.ac
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index 5b0acd03d2a30c9b..0b32fdfd4f1bb115 100644
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--- a/sysdeps/x86/configure.ac
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+++ b/sysdeps/x86/configure.ac
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@@ -96,14 +96,18 @@ libc_cv_have_x86_isa_level=4
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libc_cv_have_x86_isa_level=3
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#elif MINIMUM_X86_ISA_LEVEL == 2
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libc_cv_have_x86_isa_level=2
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-#else
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+#elif defined __x86_64__
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libc_cv_have_x86_isa_level=baseline
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+#else
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+libc_cv_have_x86_isa_level=MINIMUM_X86_ISA_LEVEL
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#endif
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EOF
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eval `${CC-cc} $CFLAGS $CPPFLAGS $ISAFLAG -I$srcdir -E conftest.c | grep libc_cv_have_x86_isa_level`
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rm -rf conftest*])
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-else
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+elif test $base_machine = x86_64; then
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libc_cv_have_x86_isa_level=baseline
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+else
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+ libc_cv_have_x86_isa_level=0
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fi
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if test $libc_cv_have_x86_isa_level = baseline; then
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AC_DEFINE_UNQUOTED(MINIMUM_X86_ISA_LEVEL, 1)
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