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2017-08-03target/s390x: Fix CSST for 16-byte storeRichard Henderson1-0/+1
Found by Coverity (CID 1378273). Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reported-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-07-17target/s390x: Implement TRTRRichard Henderson1-7/+13
Drop TRT from the set of insns handled internally by EXECUTE. It's more important to adjust the existing helper to handle both TRT and TRTR. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-07-17target/s390x: Implement SRSTURichard Henderson1-0/+41
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-07-17target/s390x: Tidy SRSTRichard Henderson1-11/+14
Since we require all registers saved on input, read R0 from ENV instead of passing it manually. Recognize the specification exception when R0 contains incorrect data. Keep high bits of result registers unmodified when in 31 or 24-bit mode. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-07-17target/s390x: Implement CONVERT UNICODE insnsRichard Henderson1-0/+310
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-07-17target/s390x: Implement CSSTRichard Henderson1-0/+189
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-23target/s390x: Implement idte instructionDavid Hildenbrand1-0/+51
Let's keep it very simple for now and flush the complete tlb, we currently can't find the right entries in our tlb, we would have to store the used tables for each element. As we now fully implement the DAT-enhancement facility, we can allow to enable it for the qemu CPU model. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170622094151.28633-4-david@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-23target/s390x: Improve heuristic for ipteDavid Hildenbrand1-9/+16
If only the page index is set, most likely we don't have a valid virtual address. Let's do a full tlb flush for that case. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170622094151.28633-3-david@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-23target/s390x: Indicate and check for local tlb clearingDavid Hildenbrand1-2/+0
Let's allow to enable it for the qemu cpu model and correctly emulate it. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170622094151.28633-2-david@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-23target/s390x: Finish implementing ETF2-ENHRichard Henderson1-1/+10
Missed the proper alignment in TRTO/TRTT, and ignoring the M3 field for all TRXX insns without ETF2-ENH. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-23target/s390x: implement mvcos instructionDavid Hildenbrand1-14/+167
This adds support for the MOVE WITH OPTIONAL SPECIFICATIONS (MVCOS) instruction. Allow to enable it for the qemu cpu model using qemu-system-s390x ... -cpu qemu,mvcos=on ... This allows to boot linux kernel that uses it for uacccess. We are missing (as for most other part) low address protection checks, PSW key / storage key checks and support for AR-mode. We fake an ADDRESSING exception when called from problem state (which seems to rely on PSW key checks to be in place) and if AR-mode is used. user mode will always see a PRIVILEDGED exception. This patch is based on an original patch by Miroslav Benes (thanks!). Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170614133819.18480-3-david@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: check alignment in CDSG in the !CONFIG_ATOMIC128 caseAurelien Jarno1-0/+2
The CDSG instruction requires a 16-byte alignement, as expressed in the MO_ALIGN_16 passed to helper_atomic_cmpxchgo_be_mmu. In the non parallel case, use check_alignment to enforce this. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170604202034.16615-4-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement STORE PAIR TO QUADWORDAurelien Jarno1-0/+24
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170604202034.16615-3-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement LOAD PAIR FROM QUADWORDAurelien Jarno1-0/+27
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170604202034.16615-2-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement TRANSLATE ONE/TWO TO ONE/TWOAurelien Jarno1-0/+45
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-29-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement TEST DECIMALAurelien Jarno1-0/+23
Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-28-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement UNPACK UNICODEAurelien Jarno1-10/+39
Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-27-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement UNPACK ASCIIAurelien Jarno1-0/+51
Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-26-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement PACK UNICODEAurelien Jarno1-9/+21
Use a common helper with PACK ASCII as the differences are limited to the stride of the source operand. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-25-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement PACK ASCIIAurelien Jarno1-0/+35
Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-24-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement MOVE LONG UNICODEAurelien Jarno1-6/+41
Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-23-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement COMPARE LOGICAL LONG UNICODEAurelien Jarno1-13/+63
For that we need to make program_interrupt available to qemu-user. Fortunately there is almost nothing to change as both kvm_enabled and CONFIG_KVM evaluate to false in that case. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-22-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: improve MOVE LONG and MOVE LONG EXTENDEDAurelien Jarno1-50/+40
As MVCL and MVCLE only differ by their operands, use a common do_mvcl helper. Optimize it calling fast_memmove and fast_memset. Correctly write back addresses. Check that r1 and r2/r3 registers are even. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-21-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: fix adj_len_to_pageAurelien Jarno1-1/+1
adj_len_to_page doesn't return the correct result when the address is already page aligned and the length is bigger than a page. Fix that. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-20-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement COMPARE LOGICAL LONGAurelien Jarno1-23/+59
As CLCL and CLCLE mostly differ by their operands, use a common do_clcl helper. Another difference is that CLCL is not interruptible. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-19-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: fix COMPARE LOGICAL LONG EXTENDEDAurelien Jarno1-17/+37
There are multiple issues with the COMPARE LOGICAL LONG EXTENDED instruction: - The test between the two operands is inverted, leading to an inversion of the cc values 1 and 2. - The address and length of an operand continue to be decreased after reaching the end of this operand. These values are then wrong write back to the registers. - We should limit the amount of bytes to process, so that interrupts can be served correctly. At the same time rename dest into src1 and src into src3 to match the operand names and make the code less confusing. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-18-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: improve 24-bit and 31-bit lengths read/writeAurelien Jarno1-14/+33
Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-17-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: improve 24-bit and 31-bit addresses writeAurelien Jarno1-7/+30
Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-16-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: improve 24-bit and 31-bit addresses readAurelien Jarno1-40/+31
Improve fix_address to also handle the 24-bit mode. Rename fix_address to wrap_address to better explain what is changed. Replace the calls to get_address with x2 = 0 and b2 = 0 by call to wrap_address, leading to the removal of this function. Rename get_address_31fix into get_address. Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-15-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement MOVE ZONESAurelien Jarno1-0/+13
Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-14-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement MOVE WITH OFFSETAurelien Jarno1-0/+31
Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-13-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement MOVE NUMERICSAurelien Jarno1-0/+13
Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-12-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement MOVE INVERSEAurelien Jarno1-0/+12
Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-11-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement PACKAurelien Jarno1-0/+37
Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-7-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: implement local-TLB-clearing in IPTEAurelien Jarno1-8/+13
And at the same time make IPTE SMP aware. Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-4-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: remove some Linux assumptions from IPTEAurelien Jarno1-7/+10
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-3-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: Re-implement a few EXECUTE target insns directlyRichard Henderson1-15/+51
While the previous patch is required for proper conformance, the vast majority of target insns are MVC and XC for implementing memmove and memset respectively. The next most common are CLC, TR, and SVC. Implementing these (and a few others for which we already have an implementation) directly is faster than going through full translation to a TB. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: Implement EXECUTE via new TranslationBlockRichard Henderson1-107/+11
Previously, helper_ex would construct the insn and then implement the insn via direct calls other helpers. This was sufficient to boot Linux but that is all. It is easy enough to go the whole nine yards by stashing state for EXECUTE within the cpu, and then rely on a new TB to be created that properly and completely interprets the insn. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: End the TB after EXECUTERichard Henderson1-22/+32
This split will be required for implementing EXECUTE properly. Do this now as a separate step to aid comparison of before and after TB listings. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: Use atomic operations for COMPARE SWAP PURGERichard Henderson1-24/+8
Also provide the cross-cpu tlb flushing required by the PoO. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: Fix some helper_ex problemsRichard Henderson1-62/+73
(1) The OR of the low bits or R1 into INSN were not being done consistently; it was forgotten along all but the SVC path. (2) The setting of ILEN was wrong on SVC path for EXRL. (3) The data load for ICM read too much. Fix these by consolidating data load at the beginning, using get_ilen to control the number of bytes loaded, and ORing in the byte from R1. Use extract64 from the full aligned insn to extract arguments. Pass in ILEN rather than RET as the more natural way to give the required data along the SVC path. Modify ENV->CC_OP directly rather than include it in the functional interface. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: Use unwind data for helper_mvcs/mvcpRichard Henderson1-2/+6
Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: Use unwind data for helper_lraRichard Henderson1-3/+3
Fix saving exception_index around mmu_translate; eliminate a dead store. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: Use unwind data for helper_tprotRichard Henderson1-1/+0
Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: Use unwind data for helper_testblockRichard Henderson1-0/+3
Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: Use unwind data for helper_stctlRichard Henderson1-4/+6
Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: Use unwind data for helper_lctlRichard Henderson1-4/+5
Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: Use unwind data for helper_lctlgRichard Henderson1-4/+4
Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: Use unwind data for helper_trtRichard Henderson1-12/+16
Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: Use unwind data for helper_treRichard Henderson1-7/+8
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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