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2019-03-20invisispec-1.0 sourceIru Cai
2018-11-14arch-arm: Print register name when warning on AT instructionsGiacomo Travaglini
With this patch we don't print anymore the enum value when warning on any AT instruction usage, but we print the sys reg name instead Change-Id: Ic6831b98ad6b0582be69883dc9519a9d3324da30 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Anouk Van Laer <anouk.vanlaer@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/14316 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-11-07arch-arm: Deprecate usage of legacy bootloader patchingGiacomo Travaglini
This patch is implicitly deprecating the usage of bootloader patching, which is injecting instructions from gem5 into the bootloader binary. This was probably meant to provide a dynamic bootloader entry point. This is not needed in ARMv8.0, since we can simply update the ArmSystem::resetAddress with the bootloader entry point. Change-Id: I0c469873b8d69f7b49a7383e0754468bc1f2bd72 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/14001 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-11-07arch-arm: ArmSystem::resetAddr64 renamed to be used in AArch32Giacomo Travaglini
ARMv8 differs from ARMv7 with the presence of RVBAR register, which contains the implementation defined reset address when EL3 is not implemented. The entry 0x0 in the AArch32 vector table, once used for the Reset Vector, is now marked as "Not used", stating that it is now IMPLEMENTATION DEFINED. An implementation might still use this vector table entry to hold the Reset vector, but having a Reset address != than the general vector table (for any other exception) is allowed. At the moment any Reset exception is still using 0 as a vector table base address. This patch is extending the ArmSystem::resetAddr64 to ArmSystem::resetAddr so that it can be used for initializing MVBAR/RVBAR. In order to do so, we are providing a specialized behavior for the Reset exception when evaluating the vector base address. Change-Id: I051a730dc089e194db3b107bbed19251c661f87e Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/14000 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-11-07arch-arm: Implement AArch32 RVBARGiacomo Travaglini
RVBAR has been added to the system register list since ARMv8.0-A. It is implemented only if the highest Exception Level is different (minor) than EL3. If that's not the case, MVBAR is used. Since the two registers are mutually exclusive (depending on the presence of EL3), they share the same coprocessor numbers: p15, 0, c12, c0, 1 Rather than introducing a new register alias, we overload MVBAR so that it is treated as RVBAR if ArmSystem::highestEL() < EL3. This patch is changing the MiscReg info so that EL1 or EL2 access MVBAR (as RVBAR). N.B MVBAR is RW, whereas RVBAR is RO Change-Id: Ida3070413fd151ce79c446e99a2a389298d5f5bd Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13999 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-11-07arch-arm: Remove SCTLR.VE bitGiacomo Travaglini
ARMv8 has removed SCTLR.VE bit which is now hardcoded to 0. We are removing it from gem5 since we were not handling it anyway. Change-Id: Ibde2db45c7f8add4a3188f2cb8c23701a6088d03 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13998 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-11-07arch-arm: Refactor ISA::clear by adding a ISA::clear32 methodGiacomo Travaglini
The patch is also moving some initialization code to be used by AArch64 as well since the registers are mapped to AArch64 ones. Change-Id: I0089df25275434172c6e0e9cb125ee535c04d1b8 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13997 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-11-07arch-arm: Remove MISCREG commented numbersGiacomo Travaglini
Having an enum number might be useful in case we wanted to know how many miscregs we have, but on the other hand it makes it tedious to update the register list, since every commented number must be bumped. This patch is removing the comments holding the MISCREG numbers Change-Id: Ic5aba93885e4b8d6cb3bd6a4c49900b9e5474276 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13996 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-11-06mips: Change the integer and fp register widths to be 64 bits.Gabe Black
This makes them more consistent with the other architectures, helping to facilitate having a single, unified type across ISAs in the future. Change-Id: I65efb10e39d453281b8429eeedbb46fa6b023a2b Reviewed-on: https://gem5-review.googlesource.com/c/13620 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2018-11-06mips: Clean up type overrides for operands.Gabe Black
For operands which default to uw (uint32_t), there's no reason to explicitly specify that all over the place. Also, when assigning to a 32 bit value which is supposed to be the full width of the resulting register, there's no reason to override the value to be signed. If the value is expanded into a larger value, then extra bits may get set unintentionally through sign extension. Even if an instruction produces a value which should be interpreted as signed, it will still only produce a value of a certain predefined width, even if that answer ends up stored in a larger variable. Change-Id: I048d68c5dd08a1d40e8117ae9d36d70e05ec21c8 Reviewed-on: https://gem5-review.googlesource.com/c/13618 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-11-06mips: Explicitly truncate the syscall return value down to 32 bits.Gabe Black
The IntReg type is 32 bits, and using it to cast the syscall return value is appropriate, but we're attempting to get rid of the ISA specific register types. Change-Id: I42496dd2cc086a6b718e1ce087fef81bb897d02f Reviewed-on: https://gem5-review.googlesource.com/c/13619 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2018-11-05null: Claim to use 64 bit floating point registers.Gabe Black
The NULL ISA doesn't actually have registers, so this setting doesn't matter. By making it 64 bits the ISA is more compatible with the other ISAs. Change-Id: I2c9b6d9a6f612719b8b00eb9dbed55fa2159e9b5 Reviewed-on: https://gem5-review.googlesource.com/c/13617 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2018-11-05sparc: Switch the FloatReg and FloatRegBits types to be 64 bit.Gabe Black
These types aren't used by the ISA itself since they're defined to be particular primitive types in the ISA description. This just affects code outside of the ISA which work with those types of registers. Change-Id: I4f62ab8fe04184cc23845090c82b250145a71747 Reviewed-on: https://gem5-review.googlesource.com/c/13616 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2018-11-05arch, arm: Return s1Req upon fault in s2LookupAnouk Van Laer
When a s2Lookup object is created, a new request is created, based upon the original, stage 1 request sent out by the CPU. When a fault occurs during the second stage of translation, this new request is returned. This can lead to issues with the O3 CPU. The O3 fetch stage will not acknowledge the fault as it is a different request than the one it sent out and does not contain a contextID. This commit rectifies this. Change-Id: I21cb7377a59aed9d90d99f048b2106eaf219e93a Reviewed-by: Ciro Santilli <ciro.santilli@arm.com> Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13782 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-11-05arch, arm: Effect of AT instructions on descriptor handlingAnouk Van Laer
Some address translation instructions will stop translation after the 1st stage and intercept the IPA, even in the presence of stage 2 (eg AT S1E1). However, in the case of a TLB miss, the table descriptors still need to be translated from IPA to PA to avoid fetching the wrong addresses. This commit splits whether IPA->PA translation is required for the VA and/or for the table descriptors. Change-Id: Ie53cdc00585f116150256f1d833460931b3bfb7d Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13781 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-29syscall_emul: implement arm openatCiro Santilli
This is especially important because the Ubuntu 18.04 packaged arm-linux-gnueabihf-gcc uses the system call on the program initialization, which leads all programs to fail with: fatal: syscall openat (#322) unimplemented. Change-Id: I5596162ad19644df7b6d21f2a46acc07030001ae Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13004 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-29arch-arm: FIXUP for the add PRFM PST instruction commitYuetsu Kodama
Change-Id: I898e5b565c6591f88ae732b24713aeae2c827cbd Reviewed-on: https://gem5-review.googlesource.com/c/13815 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-26arch-arm: We add PRFM PST instruction for armyuetsu.kodama
Note current PRFM supports only PLD, but PST (prefetch for store) is also important for latency hiding. We also bug fix in disassembler to display prfop correctly. Change-Id: I9144e7233900aa2d555e1c1a6a2c2e41d837aa13 Signed-off-by: Yuetsu Kodama <yuetsu.kodama@riken.jp> Reviewed-on: https://gem5-review.googlesource.com/c/13675 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-26arch-arm: IMPDEF for SYS instruction with CRn = {11, 15}Giacomo Travaglini
According to the arm arm, a SYS instruction (op0 = 1) with CRn = (11 or 15) is implementation defined; this makes it trappable by having HCR_EL2.TIDCP = 1. Change-Id: Idd94ac345fee652ee6f8c0a7eb7b06ac75ec38ef Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13780 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-26arch-arm: AArch64 Instruction for MISCREG_IMPDEF_UNIMPLGiacomo Travaglini
While there is a AArch32 class for instructions accessing implementation defined registers, we are lacking for the AArch64 counterpart. we were relying on FailUnimplemented, which is untrappable at EL2 (except for HCR_EL2.TGE) since it is just raising Undefined Instruction. Change-Id: I923cb914658ca958af031612cf005159707b0b4f Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13779 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-26arch-arm: Refactor AArch64 MSR/MRS trappingGiacomo Travaglini
This patch refactors AArch64 MSR/MRS trapping, by moving the trapping helpers in arch/arm/utility and in the isa code into a MiscRegOp64 class. This class is the Base class for a generic AArch64 instruction which is making use of system registers (MiscReg), like MSR,MRS,SYS. The common denominator or those instruction is the chance that the system register access is trapped to an upper Exception level. MiscRegOp64 is providing that feature. What do we gain? Other "pseudo" instructions, like access to implementation defined registers can inherit from this class to make use of the trapping functionalities even if there is no data movement between GPRs and system register. Change-Id: I0924354db100de04f1079a1ab43d4fd32039e08d Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13778 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-26arch-arm: Trap to EL2 only if not in Secure StateGiacomo Travaglini
MRS/MSR Instructions should trap to EL2 only if we are in non-Secure state since at the current implementation (Armv8.0) there is no Secure EL2. Change-Id: I93af415fbcbd19a470752adf6afc92e520e9645d Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13777 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-26arch-arm: Fix HVC trapping beahviourGiacomo Travaglini
This patch is fixing HVC trapping behaviour, reusing the pseudocode implementation provided in the arm arm. Change-Id: I0bc81478400b99d84534c1c8871f894722f547c5 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13776 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-26arch-arm: CPTR_EL3.TCPAC traps EL2 accesses to CPACR_EL1Giacomo Travaglini
According to the arm arm, CPTR_EL3.TCPAC traps EL2 accesses to the CPTR_EL2 or HCPTR, and EL2 and EL1 accesses to the CPACR_EL1 or CPACR, are trapped to EL3, unless they are trapped by CPTR_EL2.TCPAC. Change-Id: I637be35b29db39f044dda0c6cc4fe986c9620371 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13775 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-19arm: treat aarch64 hints as NOPs instead of panicCiro Santilli
Change-Id: Ida2a746e6188171bd2e4da92a4efb33fcbaa2b69 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13476 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-19arm: update hint instruction decoding to match ARMv8.5Ciro Santilli
This fixes: - unallocated hints that have since been allocated - unallocated and unimplemented hint instructions being treated as Unknown instead of the correct NOP - missing encoding for DBG on A32 Unallocated and unimplemented hints give a warning if executed. The most important fix was for the CSDB Spectre mitigation instruction, which was added recently and previously unallocated and treated as Unknown. The Linux kernel v4.18 ARMv7 uses CSDB it and boot would fail with "undefined instruction" since Linux commit 1d4238c56f9816ce0f9c8dbe42d7f2ad81cb6613 Change-Id: I283da3f08a9af4148edc6fb3ca2930cbb97126b8 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13475 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-18null: Stop specifying an endianness in isa_traits.hh.Gabe Black
The NULL ISA doesn't really have an endianness. Now that the packet accessors which consumed that endianness are gone, we can get rid of that setting as well. Change-Id: I8dd4c7b8236b07df4458fea377865f30141121d4 Reviewed-on: https://gem5-review.googlesource.com/c/13466 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-10-17arch: Include some additional headers in arch/generic/mmapped_ipr.cc.Gabe Black
These had been included transitively before. Change-Id: Ie420bc957e9abb5cd01fcf720fc1fda619d210f0 Reviewed-on: https://gem5-review.googlesource.com/c/13538 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-17arch: Get rid of the unused type AnyReg.Gabe Black
This type is defined for all the ISAs but isn't used by anything. Change-Id: I659a0c5abc7883d82fedd1cac2cd103612d315c8 Reviewed-on: https://gem5-review.googlesource.com/c/13539 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-12arch: Explicitly specify the endianness in the generic mem helpers.Gabe Black
This avoids using the accessors which automatically assume an endianness, requiring the memory system to know what the guest ISA is. Change-Id: I863fa4116f00e77b801a2f8ea2fbe34e7f55fd5f Reviewed-on: https://gem5-review.googlesource.com/c/13461 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-12mips: Use little endian packet accessors.Gabe Black
We know data is little endian, so we can use those accessors explicitly. Change-Id: I6220a543686b1d45d26973391b028dc04ce85dd2 Reviewed-on: https://gem5-review.googlesource.com/c/13460 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-10-12sparc: Use big endian packet accessors.Gabe Black
We know data is big endian, so we can use those accessors explicitly. Change-Id: I06fe35254433b20db05f5f10d0ca29a44d47c301 Reviewed-on: https://gem5-review.googlesource.com/c/13458 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-10-12x86: Use little endian packet accessors.Gabe Black
We know data is little endian, so we can use those accessors explicitly. Change-Id: I09aa7f1e525ad1346e932ce4a772b64bf59dc350 Reviewed-on: https://gem5-review.googlesource.com/c/13456 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Gabe Black <gabeblack@google.com>
2018-10-12syscall_emul: update arm uname release to 3.7.0+Ciro Santilli
Trying to compile an ARM C hello world with arm-linux-gnueabihf-gcc from Ubuntu 16.04 leads to a runtime failure with se.py: FATAL: kernel too old because the glibc tests if the kernel is at least 3.2.0, and gem5 was reporting 3.0.0. Furthermore, it is hard to obtain such toolchain at all: for example crosstool-NG currently only allows for minimum kernels above 3.2.0. 3.7.0+ was chosen to match the aarch64 value, as it is likely that the level of support will be very similar. This commit does not guarantee that full 3.7.0 is supported, but it is not likely that we had full 3.0.0 support previously either. However, it is more likely that such support will be eventually achieved if users can at least try out their programs and implement the missing system calls as they are found. Change-Id: I8df3763ae49788a6cb11cb0920e8202cd56b0f09 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/12986 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-09arch-arm: Add have_crypto System parameterGiacomo Travaglini
This patch adds the have_crypto ArmSystem parameter for enabling crypto extension. This is done by modifying the AArch32/AArch64 ID registers at startup time. Change-Id: I6eefb7e6f6354802a14ea639ad53b75f8e1e11c5 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13252 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
2018-10-09arch-arm: AArch64 Crypto AESGiacomo Travaglini
This patch implements the AArch64 AES instructions from the Crypto extension. Change-Id: I9143041ec7e1c6a50dcad3f72d7d1b55d6f2d402 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13250 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-09arch-arm: AArch64 Crypto SHAGiacomo Travaglini
This patch implements the AArch64 secure hashing instructions from the Crypto extension. Change-Id: I2cdfa81b994637c880f2523fe37cdc6596d05cb1 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13249 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-09arch-arm: AArch32 Crypto AESMatt Horsnell
This patch implements the AArch32 AES instructions from the Crypto extension. Change-Id: I51e6deda748b0c26135bcfe9d0c7128f3af91f3d Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Matt Horsnell <matt.horsnell@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13248 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-09arch-arm: AArch32 Crypto SHAMatt Horsnell
This patch implements the AArch32 secure hashing instructions from the Crypto extension. Change-Id: Iaba8424ab71800228a9aff039d93f5c35ee7d8e5 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13247 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-08dev, arm: remove the RealViewEB platformCiro Santilli
This is an old platform, and we haven't had official Linux kernel configs for it in a while, so we've decided to deprecate it. Furthermore, trying to use it fails with: object 'RealViewEB' has no attribute 'pci_host' and the last commit in the class happened two years ago, which indicates that no one has been using it. Change-Id: Icc674b00b152eb3246e05141dbaf2624cc720f21 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/12471 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-08arch-arm: Mark ArmProcess method as overrideMatteo Andreozzi
Allows compilation on clang3.5+ by fixing Winconsistent-missing-override Change-Id: Ic0ebf3869fc2d9a29fcf7cf5a6535952f41714d0 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13227 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-02sim-se: Set ArmProcess64 hwcaps depending on ID regsGiacomo Travaglini
ArmProcess64 needs to query AArch64 ID registers to check which hw capability is going to report in the appropriate aux vector's entry. Change-Id: I1e1294b831e902226f9b162f25e841e53b940454 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/13164 Reviewed-by: Brandon Potter <Brandon.Potter@amd.com> Maintainer: Brandon Potter <Brandon.Potter@amd.com>
2018-10-02sim-se: Different HWCAP for ArmProcess32/64Giacomo Travaglini
AArch32 and AArch64 have different HWCAP flags in Linux, but we are currently using AArch32 HWCAP flags to initialize the aux vector of both AArch32 and AArch64 binaries. This patch also fixes a bug that was introduced by running in SE mode a target binary compiled with glibc > 2.18. Using AArch32 flags resulted on CPUID flag being set for AArch64. This incorrectly tells libc that emulation of the midr_el1 is supported. In FullSystem this might work, but since we are in Syscall Emulation there is no OS behind emulating the mrs midr_el1 instruction. By separating AArch32 flags from AArch64 flags we are turning off the CPUID hwcap flag in SE mode. Change-Id: I9f651957ba9d19dc2bc06606de070c6586f0f9fa Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/12884 Reviewed-by: Brandon Potter <Brandon.Potter@amd.com> Maintainer: Brandon Potter <Brandon.Potter@amd.com>
2018-10-02arch-arm: Add FP16 support introduced by Armv8.2-AEdmund Grimley Evans
This changeset adds support for FP/SIMD instructions with half-precision floating-point operands. Change-Id: I4957f111c9c5e5d6a3747fe9d169d394d642fee8 Signed-off-by: Giacomo Gabrielli <giacomo.gabrielli@arm.com> Reviewed-on: https://gem5-review.googlesource.com/13084 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-02arch: Fix unserialization of VectorReg valueGabor Dozsa
Change-Id: Iba01ae60e10703877eae299ba924fa1f04a4a387 Signed-off-by: Giacomo Gabrielli <giacomo.gabrielli@arm.com> Reviewed-on: https://gem5-review.googlesource.com/13104 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-02arch-arm: Add FP16 support and other primitives to fplibEdmund Grimley Evans
This changeset: - extends fplib to support emulation of half-precision floating-point (FP16) operations; - extends fplib to support additional primitives introduced by the Arm Scalable Vector Extension (SVE) (fplibExpa, fplibScale, fplibTrigMAdd, fplibTrigSMul, fplibTrigSSel); - adds the FZ16 bit to FPSCR; - cleans up fplib code by replacing constants with preprocessor macros and by adding inline functions to recognise NaNs and infinities. Change-Id: If8fdb2a5824b478c8310bbc126ec60cc1105f135 Signed-off-by: Giacomo Gabrielli <giacomo.gabrielli@arm.com> Reviewed-on: https://gem5-review.googlesource.com/13044 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-01arch-arm: Implement AArch64 ID regs as bitunionsGiacomo Travaglini
This patch is implementing the following AArch64 ID registers as bitunions, so that it is easier to query for feature availability: - ID_AA64DFR0_EL1 - ID_AA64ISAR0_EL1 - ID_AA64ISAR1_EL1 - ID_AA64MMFR1_EL1 - ID_AA64MMFR2_EL1 - ID_AA64PFR0_EL1 They are updated to the latest Armv8.5 arch release version. RES0 only ID registers like ID_AA64AFR1_EL1 haven't been added. Change-Id: Ied037abe3757421bcfc2834d397a8cf9a2b9f0a7 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/13067 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-01arch-arm: Implement AArch64 ID_AA64MMFR2_EL1 registerGiacomo Travaglini
This patch implements AArch64 Memory Model Feature Register 2 (from ARMv8.2) Change-Id: I16d9acaf620fac6d1206e208bd143daec1657daf Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/13066 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-01arch-arm: Move MiscReg BitUnions into a separate header fileGiacomo Travaglini
As the number of MiscRegs increases there is the need of a cleaner header file; this patch is separating miscreg.[cc,hh] where the miscreg decoding/utility functions are defined/declared from the MiscReg register types (BitUnion). Change-Id: I815f53b117b50e47f93aa13d78356ef09d2a2541 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/13065 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2018-10-01arch-arm: Init AArch64 ID registers in SE modeGiacomo Travaglini
One of the auxv vector's flag is the HWCAP, whose bits match the content of several arm ID registers. This patch factors out AArch64 ID registers init into a separate method and creates the symmetric AArch32 ID register init as well, so that we get a meaningful auxiliary vector in SE mode. Change-Id: I52bdb31b67508c4447558ebd7ca743733a69280e Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/13064 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
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