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tcg: Add clz and ctz opcodes

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Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2016-11-16 09:23:28 +01:00
parent 17280ff4a5
commit 0e28d0063b
17 changed files with 266 additions and 0 deletions
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20
tcg-runtime.c
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@ -101,6 +101,26 @@ int64_t HELPER(mulsh_i64)(int64_t arg1, int64_t arg2)
return h;
}
uint32_t HELPER(clz_i32)(uint32_t arg, uint32_t zero_val)
{
return arg ? clz32(arg) : zero_val;
}
uint32_t HELPER(ctz_i32)(uint32_t arg, uint32_t zero_val)
{
return arg ? ctz32(arg) : zero_val;
}
uint64_t HELPER(clz_i64)(uint64_t arg, uint64_t zero_val)
{
return arg ? clz64(arg) : zero_val;
}
uint64_t HELPER(ctz_i64)(uint64_t arg, uint64_t zero_val)
{
return arg ? ctz64(arg) : zero_val;
}
void HELPER(exit_atomic)(CPUArchState *env)
{
cpu_loop_exit_atomic(ENV_GET_CPU(env), GETPC());