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Fix CPU_ProbeDARN test

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The DARN probe used 64-bit version of the instruction. I think it would have been OK  32-bit binaries, but the 32-bit version is always safe.
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Jeffrey Walton 2018-11-27 04:46:51 -05:00
parent 3db34abf2f
commit 9ddd6dc93c
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GPG Key ID: B36AB348921B1838
1 changed files with 4 additions and 4 deletions
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ppc_power9.cpp
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@ -107,13 +107,13 @@ bool CPU_ProbeDARN()
result = false;
else
{
// "darn r3, 1" in big- and little-endian
// This is "darn r3, 0". It provides a conditioned 32-bit
// word. It is available on both 32-bit and 64-bit.
#if CRYPTOPP_BIG_ENDIAN
__asm__ __volatile__ (".byte 0x7c, 0x61, 0x05, 0xe6 \n" : : : "r3");
__asm__ __volatile__ (".byte 0x7c, 0x60, 0x05, 0xe6 \n" : : : "r3");
#else
__asm__ __volatile__ (".byte 0xe6, 0x05, 0x61, 0x7c \n" : : : "r3");
__asm__ __volatile__ (".byte 0xe6, 0x05, 0x60, 0x7c \n" : : : "r3");
#endif
// If we got here without SIGILL then success
result = true;
}