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lzcnt is a AMD Phenom/Barcelona added instruction returning the number of leading zero bits in a word. As this is similar to the "bsr" instruction, reuse the existing code. There need to be some more changes, though, as lzcnt always returns a valid value (in opposite to bsr, which has a special case when the operand is 0). lzcnt is guarded by the ABM CPUID bit (Fn8000_0001:ECX_5). Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> |
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.. | ||
cpu.h | ||
exec.h | ||
helper.c | ||
helper.h | ||
helper_template.h | ||
kvm.c | ||
machine.c | ||
op_helper.c | ||
ops_sse.h | ||
ops_sse_header.h | ||
svm.h | ||
TODO | ||
translate.c |