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2015-06-26target-mips: add Unified Hosting Interface (UHI) supportLeon Alrae
Add UHI semihosting support for MIPS. QEMU run with "-semihosting" option will alter the behaviour of SDBBP 1 instruction -- UHI operation will be called instead of generating a debug exception. Also tweak Malta's pseudo-bootloader. On CPU reset the $4 register is set to -1 if semihosting arguments are passed to indicate that the UHI operations should be used to obtain input arguments. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-11target-mips: add ERETNC instruction and Config5.LLB bitLeon Alrae
ERETNC is identical to ERET except that an ERETNC will not clear the LLbit that is set by execution of an LL instruction, and thus when placed between an LL and SC sequence, will never cause the SC to fail. Presence of ERETNC is denoted by the Config5.LLB. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-11target-mips: Misaligned memory accesses for MSAYongbok Kim
MIPS SIMD Architecture vector loads and stores require misalignment support. MSA Memory access should work as an atomic operation. Therefore, it has to check validity of all addresses for a vector store access if it is spanning into two pages. Separating helper functions for each data format as format is known in translation. To use mmu_idx from cpu_mmu_index() instead of calculating it from hflag. Removing save_cpu_state() call in translation because it is able to use cpu_restore_state() on fault as GETRA() is passed. Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Reviewed-by: Leon Alrae <leon.alrae@imgtec.com> [leon.alrae@imgtec.com: remove unused do_* functions] Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2014-12-16target-mips: Fix CP0.Config3.ISAOnExc write accessesMaciej W. Rozycki
Fix CP0.Config3.ISAOnExc write accesses on microMIPS processors. This bit is mandatory for any processor that implements the microMIPS instruction set. This bit is r/w for processors that implement both the standard MIPS and the microMIPS instruction set. This bit is r/o and hardwired to 1 if only the microMIPS instruction set is implemented. There is no other bit ever writable in CP0.Config3 so defining a corresponding `CP0_Config3_rw_bitmask' member in `CPUMIPSState' is I think an overkill. Therefore make the ability to write the bit rely on the presence of ASE_MICROMIPS set in the instruction flags. The read-only case of the microMIPS instruction set being implemented only can be added when we add support for such a configuration. We do not currently have such support, we have no instruction flag that would control the presence of the standard MIPS instruction set nor any associated code in instruction decoding. This change is needed to boot a microMIPS Linux kernel successfully, otherwise it hangs early on as interrupts are enabled and then the exception handler invoked loops as its first instruction is interpreted in the wrong execution mode and triggers another exception right away. And then over and over again. We already check the current setting of the CP0.Config3.ISAOnExc in `set_hflags_for_handler' to set the ISA bit correctly on the exception handler entry so it is the ability to set it that is missing only. Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com> Reviewed-by: Leon Alrae <leon.alrae@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2014-11-03target-mips: add MSA MI10 format instructionsYongbok Kim
add MSA MI10 format instructions update LSA and DLSA for MSA add 16, 64 bit load and store Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2014-11-03target-mips: add MSA 2RF format instructionsYongbok Kim
add MSA 2RF format instructions Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2014-11-03target-mips: add MSA VEC/2R format instructionsYongbok Kim
add MSA VEC/2R format instructions Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2014-11-03target-mips: add MSA 3RF format instructionsYongbok Kim
add MSA 3RF format instructions Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2014-11-03target-mips: add MSA ELM format instructionsYongbok Kim
add MSA ELM format instructions Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2014-11-03target-mips: add MSA 3R format instructionsYongbok Kim
add MSA 3R format instructions Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2014-11-03target-mips: add MSA BIT format instructionsYongbok Kim
add MSA BIT format instructions Reviewed-by: Leon Alrae <leon.alrae@imgtec.com> Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2014-11-03target-mips: add MSA I5 format instructionYongbok Kim
add MSA I5 format instructions Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Reviewed-by: Leon Alrae <leon.alrae@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2014-11-03target-mips: add MSA I8 format instructionsYongbok Kim
add MSA I8 format instructions Reviewed-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2014-11-03target-mips: add TLBINV supportLeon Alrae
For Standard TLB configuration (Config.MT=1): TLBINV invalidates a set of TLB entries based on ASID. The virtual address is ignored in the entry match. TLB entries which have their G bit set to 1 are not modified. TLBINVF causes all entries to be invalidated. Single TLB entry can be marked as invalid on TLB entry write by having EntryHi.EHINV set to 1. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Yongbok Kim <yongbok.kim@imgtec.com>
2014-11-03target-mips: update PageGrain and m{t,f}c0 EntryLo{0,1}Leon Alrae
PageGrain needs rw bitmask which differs between MIPS architectures. In pre-R6 if RIXI is supported, PageGrain.XIE and PageGrain.RIE are writeable, whereas in R6 they are read-only 1. On MIPS64 mtc0 instruction left shifts bits 31:30 for MIPS32 backward compatiblity, therefore there are separate mtc0 and dmtc0 helpers. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Yongbok Kim <yongbok.kim@imgtec.com>
2014-10-14target-mips: add new Floating Point Comparison instructionsYongbok Kim
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2014-10-14target-mips: add new Floating Point instructionsLeon Alrae
In terms of encoding MIPS32R6 MIN.fmt, MAX.fmt, MINA.fmt, MAXA.fmt replaced MIPS-3D RECIP1, RECIP2, RSQRT1, RSQRT2 instructions. In R6 all Floating Point instructions are supposed to be IEEE-2008 compliant i.e. FIR.HAS2008 always 1. However, QEMU softfloat for MIPS has not been updated yet. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Yongbok Kim <yongbok.kim@imgtec.com>
2014-10-13target-mips: add ALIGN, DALIGN, BITSWAP and DBITSWAP instructionsYongbok Kim
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.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>
2014-02-10target-mips: add user-mode FR switch support for MIPS32r5Petar Jovanovic
Description of UFR feature: Required in MIPS32r5 if floating point is implemented and user-mode FR switching is supported. The UFR register allows user-mode to clear StatusFR by executing a CTC1 to UFR with GPR[0] as input, and read StatusFR by executing a CFC1 to UFR. helper_ctc1 has been extended with an additional parameter rt to check requirements for UFR feature. Definition of mips32r5-generic has been modified to include support for UFR. Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com> Reviewed-by: Eric Johnson <eric.johnson@imgtec.com>
2014-02-10target-mips: add support for CP0_Config5Petar Jovanovic
Add CP0_Config5, define rw_bitmask and enable modifications. Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com> Reviewed-by: Eric Johnson <eric.johnson@imgtec.com>
2014-02-10target-mips: add support for CP0_Config4Petar Jovanovic
Add CP0_Config4, define rw_bitmask. Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com> Reviewed-by: Eric Johnson <eric.johnson@imgtec.com>
2013-10-10tcg: Remove stray semi-colons from target-*/helper.hRichard Henderson
During GEN_HELPER=1, these are actually stray top-level semi-colons which are technically invalid ISO C, but GCC accepts as an extension. If we added enough __extension__ markers that we could dare use -Wpedantic, we'd see warning: ISO C does not allow extra ‘;’ outside of a function This will become a hard error in the next patch, wherein those ; will appear in the middle of a data structure. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-02-23target-mips: Use mul[us]2 in [D]MULT[U] insnsRichard Henderson
Cc: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-01-31target-mips: implement DSP (d)append sub-class with TCGAurelien Jarno
DSP instruction from the (d)append sub-class can be implemented with TCG. Use a different function for these instructions are they are quite different from compare-pick sub-class. Fix BALIGN instruction for negative value, where the value should be zero-extended before being shift to the right. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-12-19exec: move include files to include/exec/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-31target-mips: implement unaligned loads using TCGAurelien Jarno
Load/store from helpers should be avoided as they are quite inefficient. Rewrite unaligned loads instructions using TCG and aligned loads. The number of actual loads operations to implement an unaligned load instruction is reduced from up to 8 to 1. Note: As we can't rely on shift by 32 or 64 undefined behaviour, the code loads already shift by one constants. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-31target-mips: use the softfloat floatXX_muladd functionsAurelien Jarno
Use the new softfloat floatXX_muladd() functions to implement the madd, msub, nmadd and nmsub instructions. At the same time replace the name of the helpers by the name of the instruction, as the only reason for the previous names was to keep the macros simple. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-31target-mips: Add ASE DSP accumulator instructionsJia Liu
Add MIPS ASE DSP Accumulator and DSPControl Access instructions. Signed-off-by: Jia Liu <proljc@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-31target-mips: Add ASE DSP compare-pick instructionsJia Liu
Add MIPS ASE DSP Compare-Pick instructions. Signed-off-by: Jia Liu <proljc@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-31target-mips: Add ASE DSP bit/manipulation instructionsJia Liu
Add MIPS ASE DSP Bit/Manipulation instructions. Signed-off-by: Jia Liu <proljc@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-31target-mips: Add ASE DSP multiply instructionsJia Liu
Add MIPS ASE DSP Multiply instructions. Signed-off-by: Jia Liu <proljc@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-31target-mips: Add ASE DSP GPR-based shift instructionsJia Liu
Add MIPS ASE DSP GPR-Based Shift instructions. Signed-off-by: Jia Liu <proljc@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-31target-mips: Add ASE DSP arithmetic instructionsJia Liu
Add MIPS ASE DSP Arithmetic instructions. Signed-off-by: Jia Liu <proljc@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-28target-mips: rename helper flagsAurelien Jarno
Rename helper flags to the new ones. This is purely a mechanical change, it's possible to use better flags by looking at the helpers. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-09-19target-mips: Implement Loongson Multimedia InstructionsRichard Henderson
Implements all of the COP2 instructions except for the S<cond> family of comparisons. The documentation is unclear for those. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-09-15target-mips: switch to AREG0 free modeBlue Swirl
Add an explicit CPUState parameter instead of relying on AREG0 and switch to AREG0 free mode. Signed-off-by: Blue Swirl <blauwirbel@gmail.com> Acked-by: Aurelien Jarno <aurelien@aurel32.net>
2012-03-24target-mips: Add compiler attribute to some functions which don't returnStefan Weil
helper_raise_exception_err does not return, nor do helper_raise_exception and do_unaligned_access. Cc: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-09-06mips: Hook in more reg accesses via mttr/mftrEdgar E. Iglesias
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2010-12-22target-mips: fix translation of MT instructionsNathan Froyd
The translation of dmt/emt/dvpe/evpe was doing the moral equivalent of: int x; ... /* no initialization of x */ x = f (x); which confused later bits of TCG rather badly, leading to crashes. Fix the helpers to only return results (those instructions have no inputs), and fix the translation code accordingly. Signed-off-by: Nathan Froyd <froydnj@codesourcery.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-07-25mips: more fixes to the MIPS interrupt glue logicAurelien Jarno
Commit 36388314febad3d7675ab919287f03733a560ff6 moved most of the interrupt logic to cpu-exec.c. Remove the remaining useless code and fix software interrupts. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Acked-by: Edgar E. Iglesias <edgar@axis.com> Tested-by: Edgar E. Iglesias <edgar@axis.com>
2010-06-09target-mips: microMIPS ASE supportNathan Froyd
Add instruction decoding for the microMIPS ASE. All we do is decode and then forward to the existing gen_* routines. Signed-off-by: Nathan Froyd <froydnj@codesourcery.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-11-30target-mips: use physical address in lladdrAurelien Jarno
Currently the ll/sc instructions use the virtual address in both user and system mode. Use the physical address insteead in system mode. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-11-22target-mips: make CP0_LLAddr register CPU dependentAurelien Jarno
Depending on the CPU, CP0_LLAddr is either read-only or read-write, and the returned value can be shifted by a variable amount of bits. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
2009-04-06target-mips: use the TCG_CALL_PURE and TCG_CALL_CONST for some helpersaurel32
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7009 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-08target-mips: rename helpers from do_ to helper_aurel32
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6773 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-17TCG variable type checking.pbrook
Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5729 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-11target-mips: convert bit shuffle ops to TCGaurel32
Bit shuffle operations can be written with very few TCG instructions (between 5 and 8), so it is worth converting them to TCG. This code also move all bit shuffle generation code to a separate function in order to have a cleaner exception code path, that is it doesn't store back the TCG register to the target register after the exception, as the TCG register doesn't exist anymore. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5679 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-11target-mips: convert bitfield ops to TCGaurel32
Bitfield operations can be written with very few TCG instructions (between 2 and 5), so it is worth converting them to TCG. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5678 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-11target-mips: fix mft* helpers/callaurel32
This patch attempts to fix mft* helpers and the associated TCG calls. mft* helpers do not take a register in argument, however: - some helpers are called with an argument while they do not take one. - some helpers are declared with an argument they don't use. Acked-by: Thiemo Seufer <ths@networkno.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5674 c046a42c-6fe2-441c-8c8c-71466251a162
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