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Just check cpuid itself, don't clobber %ebx
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11
configure.ac
11
configure.ac
@ -241,13 +241,10 @@ AC_SUBST(HAVE_TI_MODE_V)
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AC_MSG_CHECKING(for cpuid instruction)
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AC_MSG_CHECKING(for cpuid instruction)
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HAVE_CPUID_V=0
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HAVE_CPUID_V=0
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ ]], [[
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#include <stdlib.h>
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__asm__("movl %ebx,%esi\n"
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]], [[
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"cpuid\n"
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unsigned int level = 0;
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"movl %esi,%ebx");
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unsigned int *eax = NULL, *ebx = NULL, *ecx = NULL, *edx = NULL;
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__asm__("cpuid" : "=a"(*eax), "=b" (*ebx), "=c"(*ecx), "=d"(*edx)
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: "0"(level));
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]])],
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]])],
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[AC_MSG_RESULT(yes)
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[AC_MSG_RESULT(yes)
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AC_DEFINE([HAVE_CPUID], [1], [cpuid instruction is available])
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AC_DEFINE([HAVE_CPUID], [1], [cpuid instruction is available])
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