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target-xtensa: Use clz opcode

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Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2016-11-16 11:48:37 +01:00
parent 03a733dc62
commit b79ea941d6
3 changed files with 11 additions and 17 deletions
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13
target/xtensa/op_helper.c
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@ -161,19 +161,6 @@ void HELPER(debug_exception)(CPUXtensaState *env, uint32_t pc, uint32_t cause)
HELPER(exception)(env, EXC_DEBUG);
}
uint32_t HELPER(nsa)(uint32_t v)
{
if (v & 0x80000000) {
v = ~v;
}
return v ? clz32(v) - 1 : 31;
}
uint32_t HELPER(nsau)(uint32_t v)
{
return v ? clz32(v) : 32;
}
static void copy_window_from_phys(CPUXtensaState *env,
uint32_t window, uint32_t phys, uint32_t n)
{