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2013-01-05target-s390: Use noreturn for exception and load_pswRichard Henderson
Both always exit the cpu loop. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Use TCG_CALL_NO_WG for misc helpersRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Use TCG_CALL_NO_WG for integer helpersRichard Henderson
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>
2013-01-05target-s390: Use TCG_CALL_NO_WG for floating-point helpersRichard Henderson
None of them read or write tcg registers, but most can raise fp exceptions. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Use TCG_CALL_NO_WG for memory helpersRichard Henderson
Those that do not read or write tcg registers, but can raise exceptions via memory faults. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Perform COMPARE AND SWAP inlineRichard Henderson
Still no proper solution for CONFIG_USER_ONLY, but the system version is significantly better. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Optimize get_addressRichard Henderson
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>
2013-01-05target-s390: Optimize ADDC/SUBBRichard Henderson
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>
2013-01-05target-s390: Optimize ADDU/SUBU CC testingRichard Henderson
We can easily generate some masks for logical add/subtract inline. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Tidy comparisonsRichard Henderson
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>
2013-01-05target-s390: Optmize emitting discardsRichard Henderson
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>
2013-01-05target-s390: Optimize XCRichard Henderson
Notice XC with same address and convert that to store of zero. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Fix cpu_clone_regsRichard Henderson
R2 is the syscall return register, not R0. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement LOAD/SET FP AND SIGNALRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement SET ROUNDING MODERichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Use uint64_to_float128Richard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement LCDFRRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Check insn operand specificationsRichard Henderson
Removes all the fixmes for even register numbers, etc. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement CPSDRRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement POPCNTRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement CONVERT FROM LOGICALRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement CONVERT TO LOGICALRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement STORE ON CONDITIONRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement LOAD ON CONDITIONRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement COMPARE AND TRAPRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement COMPARE RELATIVE LONGRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement PREFETCHRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement R[NOX]SBGRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement LDGR, LGDRRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement RISBGRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Implement COMPARE AND BRANCHRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Tidy s->op_cc handlingRichard Henderson
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>
2013-01-05target-s390: Implement BRANCH ON INDEXRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Delete dead code from old translatorRichard Henderson
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>
2013-01-05target-s390: Convert SERVCRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert LPSWERichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert STFLRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert STSIRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert SACFRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert STCKERichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert CSPRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert STURARichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert subchannel instructionsRichard Henderson
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>
2013-01-05target-s390: Convert RRBERichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert SSKERichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert ISKERichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert IPTERichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert STAPRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert SPX, STPXRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert PTLBRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
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