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26cc0a3fd1
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Richard Henderson
26cc0a3fd1 target-s390: Use noreturn for exception and load_psw 
Both always exit the cpu loop.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:46 -08:00
Richard Henderson
893e1660d5 target-s390: Use TCG_CALL_NO_WG for misc helpers 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:46 -08:00
Richard Henderson
c20fec4055 target-s390: Use TCG_CALL_NO_WG for integer helpers 
The division routines do not read or write tcg registers,
but can raise fixed-point divide exceptions.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:46 -08:00
Richard Henderson
c482ea94ea target-s390: Use TCG_CALL_NO_WG for floating-point helpers 
None of them read or write tcg registers, but most can
raise fp exceptions.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:46 -08:00
Richard Henderson
d918a65c69 target-s390: Use TCG_CALL_NO_WG for memory helpers 
Those that do not read or write tcg registers, but can
raise exceptions via memory faults.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:46 -08:00
Richard Henderson
b7886de3f3 target-s390: Perform COMPARE AND SWAP inline 
Still no proper solution for CONFIG_USER_ONLY, but the system
version is significantly better.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:46 -08:00
Richard Henderson
bacf43c62e target-s390: Optimize get_address 
Don't load the displacement into a register first, add it second
so that tcg_gen_addi_i64 can eliminate zeros.  Don't mask the
displacement first so that we don't turn small negative numbers
into large positive numbers.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:46 -08:00
Richard Henderson
c95ec459c6 target-s390: Optimize ADDC/SUBB 
Giving the proper mask to disas_jcc allows us to generate an inline
comparison generating the carry/borrow with setcond.

In the very worst case, when we must use the external helper to compute
a value for CC, we generate (cc > 1) instead of (cc >> 1), which is only
very slightly slower on common cpus.

In the very best case, when the CC comes from a COMPARE insn and the
compiler is using ALCG with zero, everything folds out to become just
the setcond that the compiler wanted.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:46 -08:00
Richard Henderson
a359b770c6 target-s390: Optimize ADDU/SUBU CC testing 
We can easily generate some masks for logical add/subtract inline.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:45 -08:00
Richard Henderson
de379661d5 target-s390: Tidy comparisons 
After full conversion, we can audit the uses of LTGT cc ops
and see that none of the instructions can ever set CC=3.
Thus we can extend the table to treat that bit as ignored.

This fixes a regression wrt the pre-conversion translation
in which NE was used for both m=6 and m=7.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:45 -08:00
Richard Henderson
f24c49c24a target-s390: Optmize emitting discards 
While they aren't expensive, they aren't free to process.  When we
know that the three cc helper variables are dead, don't kill them.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:45 -08:00
Richard Henderson
d074ac6d26 target-s390: Optimize XC 
Notice XC with same address and convert that to store of zero.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:45 -08:00
Richard Henderson
90b4f8ad72 target-s390: Fix cpu_clone_regs 
R2 is the syscall return register, not R0.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:45 -08:00
Richard Henderson
411edc22cb target-s390: Implement LOAD/SET FP AND SIGNAL 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:45 -08:00
Richard Henderson
a12000b9ec target-s390: Implement SET ROUNDING MODE 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:45 -08:00
Richard Henderson
d2d9feac6f target-s390: Use uint64_to_float128 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:45 -08:00
Richard Henderson
1d1f630135 target-s390: Implement LCDFR 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:45 -08:00
Richard Henderson
49f7ee802f target-s390: Check insn operand specifications 
Removes all the fixmes for even register numbers, etc.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:45 -08:00
Richard Henderson
2db014b5a7 target-s390: Implement CPSDR 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:45 -08:00
Richard Henderson
99b4f24b3e target-s390: Implement POPCNT 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:45 -08:00
Richard Henderson
2112bf1bfb target-s390: Implement CONVERT FROM LOGICAL 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:44 -08:00
Richard Henderson
6ac1b45f9b target-s390: Implement CONVERT TO LOGICAL 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:44 -08:00
Richard Henderson
b92fa33486 target-s390: Implement STORE ON CONDITION 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:44 -08:00
Richard Henderson
632086da28 target-s390: Implement LOAD ON CONDITION 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:44 -08:00
Richard Henderson
1c26875182 target-s390: Implement COMPARE AND TRAP 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:44 -08:00
Richard Henderson
403e217f40 target-s390: Implement COMPARE RELATIVE LONG 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:44 -08:00
Richard Henderson
e0def9094e target-s390: Implement PREFETCH 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:44 -08:00
Richard Henderson
d6c6372e18 target-s390: Implement R[NOX]SBG 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:44 -08:00
Richard Henderson
143cbbc5eb target-s390: Implement LDGR, LGDR 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:44 -08:00
Richard Henderson
2d6a869833 target-s390: Implement RISBG 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:44 -08:00
Richard Henderson
5550359f07 target-s390: Implement COMPARE AND BRANCH 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:44 -08:00
Richard Henderson
7a6c7067f0 target-s390: Tidy s->op_cc handling 
There's no need to force computation of the true cc_op when taking an
exception or single stepping.  In either case we'll enter the next TB
with s->cc_op = DYNAMIC and recompute anyway.  Just make sure that
s->cc_op is stored back to env->cc_op as needed.

Delete some dead functions, avoid allocating unused TCG temps, drop
the old s->is_jmp setting.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:44 -08:00
Richard Henderson
2cf5e350c4 target-s390: Implement BRANCH ON INDEX 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:44 -08:00
Richard Henderson
4f3adfb2a6 target-s390: Delete dead code from old translator 
The use of inline restricts detection of static functions that are
no longer used.  Limit the use of inline to those functions that
are conditionally used based on CONFIG_USER_ONLY.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
dc458df91d target-s390: Convert SERVC 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
7ab938d706 target-s390: Convert LPSWE 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
fc778b55a5 target-s390: Convert STFL 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
d14b3e09b2 target-s390: Convert STSI 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
14244b21a0 target-s390: Convert SACF 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
39a5003c89 target-s390: Convert STCKE 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
3d596f4912 target-s390: Convert CSP 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
204504e2fa target-s390: Convert STURA 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
2c423fc070 target-s390: Convert subchannel instructions 
While we're at it, list all of the chapter 14 subchannel insns.
Which is easy since all merely need indicate non-operation.

Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
5cc69c54f6 target-s390: Convert RRBE 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
2bbde27f25 target-s390: Convert SSKE 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
8026417c71 target-s390: Convert ISKE 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
cfef53e356 target-s390: Convert IPTE 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
411fea3d84 target-s390: Convert STAP 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
e805a0d39e target-s390: Convert SPX, STPX 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:43 -08:00
Richard Henderson
0568d8aab0 target-s390: Convert PTLB 
Signed-off-by: Richard Henderson <rth@twiddle.net>
 2013-01-05 12:18:42 -08:00