target/s390x: Use unwind data for helper_clst
Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
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@ -362,6 +362,7 @@ uint64_t HELPER(srst)(CPUS390XState *env, uint64_t r0, uint64_t end,
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/* unsigned string compare (c is string terminator) */
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uint64_t HELPER(clst)(CPUS390XState *env, uint64_t c, uint64_t s1, uint64_t s2)
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{
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uintptr_t ra = GETPC();
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uint32_t len;
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c = c & 0xff;
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@ -371,8 +372,8 @@ uint64_t HELPER(clst)(CPUS390XState *env, uint64_t c, uint64_t s1, uint64_t s2)
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/* Lest we fail to service interrupts in a timely manner, limit the
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amount of work we're willing to do. For now, let's cap at 8k. */
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for (len = 0; len < 0x2000; ++len) {
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uint8_t v1 = cpu_ldub_data(env, s1 + len);
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uint8_t v2 = cpu_ldub_data(env, s2 + len);
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uint8_t v1 = cpu_ldub_data_ra(env, s1 + len, ra);
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uint8_t v2 = cpu_ldub_data_ra(env, s2 + len, ra);
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if (v1 == v2) {
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if (v1 == c) {
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/* Equal. CC=0, and don't advance the registers. */
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@ -1942,7 +1942,6 @@ static ExitStatus op_clm(DisasContext *s, DisasOps *o)
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static ExitStatus op_clst(DisasContext *s, DisasOps *o)
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{
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potential_page_fault(s);
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gen_helper_clst(o->in1, cpu_env, regs[0], o->in1, o->in2);
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set_cc_static(s);
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return_low128(o->in2);
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