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path: root/target-s390x/helper.h
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2015-06-17target-s390x: PER instruction-fetch event supportAurelien Jarno
For the PER instruction-fetch, we can't use the QEMU breakpoint infrastructure as it triggers for a single address and not a full address range, and as it actually stop before the instruction and not before. We therefore call an helper with the just fetched instruction address, which check if the address is within the PER address range. If it is the case, an event is recorded and will be signaled through an exception. Note that we implement here the PER-3 behaviour, that is an invalid opcode is not considered as an instruction fetch. Without PER-3 this behavious is undefined. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Alexander Graf <agraf@suse.de>
2015-06-17target-s390x: PER successful-branching event supportAurelien Jarno
For the PER successful-branching event support, we can't rely on any QEMU infrastucture. We therefore call an helper in all places where a branch can be taken. We have to pay attention to the branch to next case, as it's still a taken branch. We don't need to care about the cases using goto_tb, as we have disabled them in the previous patch. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Alexander Graf <agraf@suse.de>
2015-06-17target-s390x: basic PER event handlingAurelien Jarno
This patch add basic support to generate PER exceptions. It adds two fields to the cpu structure to record for the PER address and PER code & ATMID values. When an exception is triggered and a PER event is pending, the two PER values are copied to the lowcore area. At the end of an instruction, an helper is checking for a possible pending PER event and triggers an exception in that case. For that to work with branches, we need to disable TB chaining when PER is activated. Fortunately it's already in the TB flags. Finally in case of a SERVICE CALL exception, we need to trigger the PER exception immediately after. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Alexander Graf <agraf@suse.de>
2015-06-17target-s390x: wire up I/O instructions in TCG modeAlexander Graf
The code handling the I/O instructions for KVM decodes the instruction itself. In TCG mode also pass the full instruction word to the helpers. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Alexander Graf <agraf@suse.de>
2015-06-17target-s390x: wire up DIAG IPL in TCG modeAurelien Jarno
DIAG IPL is already implemented for KVM, but not wired from TCG. For that change the format of the instruction so that we can get R1 and R3 numbers in addition to the function code. The diag function can change plenty of things, including CC, so we should enter with a static CC. Also it doesn't set the value of general register 2 to 0 as in the current code. We also need to exit the CPU loop after a reset, which means a new PSW. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Alexander Graf <agraf@suse.de>
2015-06-05target-s390x: implement TRANSLATE EXTENDED instructionAurelien Jarno
It is part of the basic zArchitecture instructions. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Alexander Graf <agraf@suse.de>
2015-06-05target-s390x: implement TRANSLATE AND TEST instructionAurelien Jarno
It is part of the basic zArchitecture instructions. Allow it to be call from EXECUTE. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Alexander Graf <agraf@suse.de>
2015-06-05target-s390x: implement LOAD FP INTEGER instructionsAurelien Jarno
This is needed to pass the gcc.c-torture/execute/ieee/20010114-2.c test in the gcc testsuite. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Alexander Graf <agraf@suse.de>
2015-06-05target-s390x: remove unused helpersAurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Alexander Graf <agraf@suse.de>
2015-06-05target-s390x: optimize (negative-) abs computationAurelien Jarno
Now that movcond exists, it's easy to write (negative-) absolute value using TCG code instead of an helper. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Alexander Graf <agraf@suse.de>
2015-02-03target-s390: Implement LURA, LURAG, STURGRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-28tcg: Invert the inclusion of helper.hRichard Henderson
Rather than include helper.h with N values of GEN_HELPER, include a secondary file that sets up the macros to include helper.h. This minimizes the files that must be rebuilt when changing the macros for file N. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-02-23target-s390x: Use mulu2 for mlgr insnRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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: Implement LOAD/SET FP AND SIGNALRichard 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: Convert SERVCRichard 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 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 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 SPT, STPTRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert SCKC, STCKCRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert STCKRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert SCKRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert STIDPRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert SRSTRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert CLST, MVSTRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert CKSMRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert IPMRichard Henderson
Note that the previous placement of the PM field was incorrect. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert LFPC, SFPCRichard Henderson
Note that we were failing to set the rounding mode in fpu_status. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert FLOGRRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert CONVERT FROM FIXEDRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert CONVERT TO FIXEDRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert LOAD ZERORichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert FP SQUARE ROOTRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert FP LOAD COMPLIMENT, NEGATIVE, POSITIVERichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert TEST DATA CLASSRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert MULTIPLY AND ADD, SUBTRACTRichard Henderson
Use the new float*_muladd interface to softfloat. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert FP MULTIPLYRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-01-05target-s390: Convert FP DIVIDERichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
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