Make the cache ID system registers (CLIDR, CSSELR, CCSIDR, CTR)
visible to AArch64. These are mostly simple 64-bit extensions of the
existing 32 bit system registers and so can share reginfo definitions.
CTR needs to have a split definition, but we can clean up the
temporary user-mode implementation in favour of using the CPU-specified
reset value, and implement the system-mode-required semantics of
restricting its EL0 accessibility if SCTLR.UCT is not set.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
The raw read and write functions were using the ARM_CP_64BIT flag in
ri->type to determine whether to treat the register's state field as
uint32_t or uint64_t; however AArch64 register info structs don't use
that flag. Abstract out the "how big is the field?" test into a
function and fix it to work for AArch64 registers. For this to work
we must ensure that the reginfo structs put into the hashtable have
the correct state field for their use, not the placeholder STATE_BOTH.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Support creating the ARM vgic device through the device control API and
setting the base address for the distributor and cpu interfaces in KVM
VMs using this API.
Because the older KVM_CREATE_IRQCHIP interface needs the irq chip to be
created prior to creating the VCPUs, we first test if we can use the
device control API in kvm_arch_irqchip_create (using the test flag from
the device control API). If we cannot, it means we have to fall back to
KVM_CREATE_IRQCHIP and use the older ioctl at this point in time. If
however, we can use the device control API, we don't do anything and
wait until the arm_gic_kvm driver initializes and let that use the
device control API.
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Message-id: 1392687720-26806-5-git-send-email-christoffer.dall@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In ARMv5 level 2 page table descriptors, each 4K or 64K page is split into
four subpages, each of which can have different access permission settings,
which are specified by four two-bit fields in the l2 descriptor. A
long-standing cut-and-paste error meant we were using the wrong bits in
the virtual address to select the access-permission field for 4K pages.
The error has presumably not been noticed before because most guests don't
make use of the ability to set the access permissions differently for
each 1K subpage: if the guest gives the whole page the same access
permissions it doesn't matter which of the 4 AP fields we select.
(The whole issue is irrelevant for ARMv7 CPUs anyway because subpages
aren't supported there.)
Reported-by: Vivek Rai <Vivek.Rai@emulex.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1392667690-8731-1-git-send-email-peter.maydell@linaro.org
Correct some obviously nonsensical bit manipulation spotted by Coverity
when constructing the short-form PAR value for ATS operations.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1392659525-8335-1-git-send-email-peter.maydell@linaro.org
Implement the unprivileged load and store instructions.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the narrowing three-reg-diff operations: ADDHN,
RADDHN, SUBHN and RSUBHN.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the wide three-reg-different operations:
SADDW, UADDW, SSUBW and USUBW.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add the remainder of the 64x64->128 operations in the three-reg-diff
category except for PMULL, PMULL2.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
The opcode switch in disas_simd_three_reg_diff() is missing the
customary comments indicating which cases correspond to which
instructions. Add them.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
System mode store-exclusive use a different code path to usermode ones;
implement this missing code, in a similar way to the 32 bit version.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
The write_raw_cp_reg's value argument should be a uint64_t, since
that's what all its callers hand it and what all the functions it
calls take. A (harmless) typo meant we were accidentally declaring
it as int64_t.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
The read_raw_cp_reg and write_raw_cp_reg functions can now never
fail (in fact they should never have failed previously unless
there was a bug in a reginfo that meant no raw accessor was
provided for a might-trap register). This allows us to clean up
their prototypes so the write function returns void and the
read function returns the value read, which in turn lets us
simplify the callers.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Now that cpreg read and write functions can't fail and throw an
exception, we can remove the code from the translator that synchronises
the guest PC in case an exception is thrown.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
All cpreg read and write functions now return 0, so we can clean up
their prototypes:
* write functions return void
* read functions return the value rather than taking a pointer
to write the value to
This is a fairly mechanical change which makes only the bare
minimum set of changes to the callers of read and write functions.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Convert the remaining miscellaneous cases of reginfo read/write
functions returning EXCP_UDEF to use an accessfn instead:
TEEHBR, and the ATS address-translation operations.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Convert the reginfo structs for the generic timer registers
to use access functions rather than returning EXCP_UDEF from
their read handlers. In some cases this allows us to remove
a read handler completely.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Convert the performance monitor reginfo definitions to use
an accessfn rather than returning EXCP_UDEF from read and
write functions. This also allows us to fix a couple of XXX
cases where we weren't imposing the access restrictions on
RAZ/WI or constant registers.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Several of the system registers handled via the ARMCPRegInfo
mechanism have access trap control bits controlling whether the
registers are accessible to lower privilege levels. Replace
the existing mechanism (allowing the read and write functions
to return EXCP_UDEF if access is denied) with a dedicated
"check access rights" function pointer in the ARMCPRegInfo.
This will allow us to simplify some of the register definitions,
which no longer need read/write functions purely to handle
the access checks.
We take the opportunity to define the return value from the
access checking function in a way that allows us to set the
correct exception syndrome information for exceptions taken
to AArch64 (which may need to distinguish access failures due
to a configurable trap or enable from other kinds of access
failure).
This commit defines the new mechanism but does not move any
of the registers across to use it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
The ARM946 has 8 PRBS (protection region base and size) registers.
Currently we implement these with a CP_ANY reginfo; however this
underdecodes (since there are 16 possible values of CRm but only
8 registers) and we catch the invalid values in the read and
write functions. However this causes issues with migration since
we only migrate the first of a wildcard register set, so we only
migrate c6_region[0]. It also makes it awkward to pull reginfo
access checks out into their own function.
Avoid all these problems by just defining separate reginfo structs
for each of the 8 registers; this also lets us avoid having any
read or write functions and will result in more efficient direct
field accesses from generated code.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Log guest attempts to access unimplemented system registers via
the LOG_UNIMP reporting mechanism (for both the 32 bit and 64 bit
instruction sets). This is particularly useful for debugging
problems where the guest is trying to use a system register that
QEMU doesn't implement.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Remove the 'struct sr' from ARMCPUState -- it isn't actually used and is
a hangover from the original separate system register implementation used
by the SuSE linux-user-mode-only AArch64 target.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
The SCTLR bits S and R (8 and 9) only exist in ARMv6 and earlier.
In ARMv7 these bits RAZ, and in ARMv8 they are reassigned. Guard
the use of them in check_ap() so that we don't get incorrect results
for ARMv8 CPUs.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
The SCTLR is full of bits for enabling or disabling various things, and so
there are many places in the code which check if certain bits are set.
Define some named constants for the SCTLR bits so these checks are easier
to read.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Extend the set of CPUs for which we provide a QEMU_KVM_ARM_TARGET_*
constant to include all the ones currently supported by the kernel
headers we are using.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Implement the remaining instructions in the SIMD 3-reg-same
and scalar-3-reg-same groups: FMULX, FRECPS, FRSQRTS, FACGE,
FACGT, FMLA and FMLS.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add support for the floating-point pairwise operations
FADDP, FMAXP, FMAXNMP, FMINP and FMINNMP. To do this we use the
code which was previously handling only integer pairwise operations,
and push the integer-specific decode and handling of unallocated
cases up one level in the call tree, so we can also call it from
the floating-point section of the decoder.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This adds all forms of the SIMD floating point and set instructions:
FCM(GT|GE|EQ|LE|LT)
Most of the heavy lifting is done by either the existing neon helpers or
some new helpers for the 64bit double cases. Most of the code paths are
common although the 2misc versions are a little special as they compare
against zero.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
[PMM: fixed some minor bugs, added the 2-misc-scalar encoding]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the scalar three different instruction group:
it only has three instructions in it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the SIMD scalar indexed instructions. The encoding
here is nearly identical to the vector indexed grouping, so
we combine the two.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the 'long' operations in the vector x indexed
element category.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement all the SIMD vector x indexed element instructions
in the subcategory which are not 'long' ops.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Use libvixl to implement disassembly output in debug
logs for A64, for use with both AArch64 hosts and targets.
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
[PMM:
* added support for target disassembly
* switched to custom QEMUDisassembler so the output format
matches what QEMU expects
* make sure we correctly fall back to "just print hex"
if we didn't build the AArch64 disassembler because of
lack of a C++ compiler
* rename from 'aarch64' to 'arm-a64' because this is a
disassembler for the A64 instruction set
* merge aarch64.c and aarch64-cxx.cc into one C++ file
* simplify the aarch64.c<->aarch64-cxx.cc interface]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add support for the AArch32 floating-point half-precision to double-
precision conversion VCVTB and VCVTT instructions.
Signed-off-by: Will Newton <will.newton@linaro.org>
[PMM: fixed a minor missing-braces style issue]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add the SIMD FNEG and FABS instructions in the SIMD 2-reg-misc group.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add the byte-reverse operations REV64, REV32 and REV16 from the
two-reg-misc group.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add the narrowing integer instructions in the 2-reg-misc class.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the 2-reg-misc CNT, NOT and RBIT instructions.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the simple 2-register-misc operations we can share
with the scalar-two-register-misc code. (SUQADD, USQADD, SQABS,
SQNEG also fall into this category, but aren't implemented in
the scalar-2-register case yet either.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add a skeleton decode for the SIMD 2-reg misc group.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the simple 64 bit integer operations from the SIMD
scalar 2-register misc group (C3.6.12): the comparisons against
zero, plus ABS and NEG.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the instructions in the scalar pairwise group (C3.6.8).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the pairwise integer operations in the 3-reg-same SIMD group:
ADDP, SMAXP, SMINP, UMAXP and UMINP.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the SIMD 3-reg-same instructions where the size == 3 case
is reserved: SHADD, UHADD, SRHADD, URHADD, SHSUB, UHSUB, SMAX,
UMAX, SMIN, UMIN, SABD, UABD, SABA, UABA, MLA, MLS, MUL, PMUL,
SQRDMULH, SQDMULH. (None of these have scalar-3-same versions.)
This completes the non-pairwise integer instructions in this category.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the SIMD 3-reg-same instructions SQADD, UQADD,
SQSUB, UQSUB, SSHL, USHL, SQSHl, UQSHL, SRSHL, URSHL,
SQRSHL, UQRSHL; these are all simple calls to existing
Neon helpers. We also enable SSHL, USHL, SRSHL and URSHL
for the 3-reg-same-scalar category (but not the others
because they can have non-size-64 operands and the
scalar_3reg_same function doesn't support that yet.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This implements a subset of the AdvSIMD shift operations (namely all the
none saturating or narrowing ones). The actual shift generation code
itself is common for both the scalar and vector cases but wrapped with
either vector element iteration or the fp reg access.
The rounding operations need to take special care to correctly reflect
the result of adding rounding bits on high bits as the intermediates do
not truncate.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Implement a simple subset of the SIMD 3-same floating point
operations. This includes a common helper function used for both
scalar and vector ops; FABD is the only currently implemented
shared op.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add some of the integer operations in the SIMD 3-same group:
specifically, the comparisons, addition and subtraction.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add support for the logical operations (ORR, AND, BIC, ORN, EOR, BSL,
BIT and BIF) from the SIMD 3 register same group (C3.6.16).
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add top level decode for the A64 SIMD three regs same group
(C3.6.16), splitting it into the pairwise, logical, float and
integer subgroups.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the add, sub and compare ops from the SIMD "scalar three same"
group.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the absolute-difference instructions in the SIMD
three-different group: SABAL, SABAL2, UABAL, UABAL2, SABDL,
SABDL2, UABDL, UABDL2.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add support for the multiply-accumulate instructions from the
SIMD three-different instructions group (C3.6.15):
* skeleton decode of unallocated encodings and split of
the group into its three sub-parts
* framework for handling the 64x64->128 widening subpart
* implementation of the multiply-accumulate instructions
SMLAL, SMLAL2, UMLAL, UMLAL2, SMLSL, SMLSL2, UMLSL, UMLSL2,
UMULL, UMULL2, SMULL, SMULL2
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add support for the AArch32 Advanced SIMD VCVTA, VCVTN, VCVTP
and VCVTM instructions.
Signed-off-by: Will Newton <will.newton@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add support for the AArch32 floating-point VCVTA, VCVTN, VCVTP
and VCVTM instructions.
Signed-off-by: Will Newton <will.newton@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add support for the AArch32 Advanced SIMD VRINTA, VRINTN, VRINTP
VRINTM and VRINTZ instructions.
Signed-off-by: Will Newton <will.newton@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This helper sets the rounding mode in the standard_fp_status word to
allow NEON instructions to modify the rounding mode whilst using the
standard FPSCR values for everything else.
Signed-off-by: Will Newton <will.newton@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add support for the AArch32 Advanced SIMD VRINTX instruction.
Signed-off-by: Will Newton <will.newton@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add support for the AArch32 floating-point VRINTX instruction.
Signed-off-by: Will Newton <will.newton@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add support for the AArch32 floating-point VRINTZ instruction.
Signed-off-by: Will Newton <will.newton@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add support for the AArch32 floating-point VRINTR instruction.
Signed-off-by: Will Newton <will.newton@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add support for AArch32 ARMv8 FP VRINTA, VRINTN, VRINTP and VRINTM
instructions.
Signed-off-by: Will Newton <will.newton@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This function will be needed for AArch32 ARMv8 support, so move it to
helper.c where it can be used by both targets. Also moves the code out
of line, but as it is quite a large function I don't believe this
should be a significant performance impact.
Signed-off-by: Will Newton <will.newton@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Convert the MIDR register to a property. This allows boards to later set
a custom MIDR value. This has been done in such a way to maintain
compatibility with all existing CPUs and boards
Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 878613f2f12d4162f12629522fd99de8df904856.1390176489.git.alistair.francis@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add support for the SIMD scalar copy instruction group (C3.6.7),
which consists of the single instruction DUP (element, scalar).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds support for the AdvSIMD modified immediate group
(C3.6.6) with all its suboperations (movi, orr, fmov, mvni, bic).
Signed-off-by: Alexander Graf <agraf@suse.de>
[AJB: new decode struct, minor bug fixes, optimisation]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This adds support for the all the AdvSIMD vector copy operations
(ARM ARM 3.6.5).
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add support for the SIMD "across lanes" instruction group (C3.6.4).
Signed-off-by: Michael Matz <matz@suse.de>
[PMM: Updated to current codebase, added fp min/max ops,
added unallocated encoding checks]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add support for the SIMD ZIP/UZIP/TRN instruction group
(C3.6.3).
Signed-off-by: Michael Matz <matz@suse.de>
[PMM: use new do_vec_get/set etc functions and generally update to new
codebase standards; refactor to pull per-element loop outside switch]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add support for the SIMD TBL/TBLX instructions (group C3.6.2).
Signed-off-by: Michael Matz <matz@suse.de>
[PMM: rewritten to do more of the decode in translate-a64.c,
and to do only one 64 bit pass at a time in the helper]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add support for the SIMD EXT instruction (the only one in its
group, C3.6.1).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add decode skeleton and function placeholders for all the SIMD data
processing instructions. Due to the complexity of this part of the
table the normal extract and switch approach gets very messy very
quickly, so we use a simple data-driven pattern-and-mask approach.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the SIMD ld/st single structure instructions.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This adds support support for the SIMD load/store
multiple category of instructions.
This also brings in a couple of helper functions for manipulating
sections of the SIMD registers:
* do_vec_get - fetch value from a slice of a vector register
* do_vec_set - set a slice of a vector register
which use vec_reg_offset for consistent processing of offsets in an
endian aware manner. There are also additional helpers:
* do_vec_ld - load value into SIMD
* do_vec_st - store value from SIMD
which load or store a slice of a vector register to memory.
These don't zero extend like the fp variants.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Switch the ARMCPUInfo arrays in cpu.c and cpu64.c to use a terminator
entry rather than looping based on ARRAY_SIZE. The latter causes
compile warnings on some versions of gcc if the configure options
happen to result in an empty array.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Add support for FCVT between half, single and double precision.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds support for those instructions in the "Floating-point
data-processing (1 source)" group which are simple 32-bit-to-32-bit
or 64-bit-to-64-bit operations (ie everything except FCVT between
single/double/half precision).
We put the new round-to-int helpers in helper.c because they will
also be used by the new ARMv8 A32/T32 rounding instructions.
Signed-off-by: Alexander Graf <agraf@suse.de>
[WN: Commit message tweak, merged single and double precision patches,
updated to new infrastructure.]
Signed-off-by: Will Newton <will.newton@linaro.org>
[PMM: reworked decode, split FCVT out into their own patch]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add support for the AArch64 floating-point <-> integer conversion
instructions to disas_fpintconv. In the process we can rearrange
and simplify the detection of unallocated encodings a little.
We also correct a typo in the instruction encoding diagram for this
instruction group: bit 21 is 1, not 0.
Signed-off-by: Will Newton <will.newton@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds emulation for the instruction group labeled
"Floating-point <-> fixed-point conversions" in the ARM ARM.
Namely this includes the instructions SCVTF, UCVTF, FCVTZS, FCVTZU
(scalar, fixed-point).
Signed-off-by: Alexander Graf <agraf@suse.de>
[WN: Commit message tweak, rebased, updated to new infrastructure.
Applied bug fixes from Michael Matz and Janne Grunau.]
Signed-off-by: Will Newton <will.newton@linaro.org>
[PMM: significant cleanup]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Define the full set of floating point to fixed point conversion
helpers required to support AArch64.
Signed-off-by: Will Newton <will.newton@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
The VFP fixed point conversion helpers first call float_scalbn and
then convert the result to an integer. This scalbn operation may
set floating point exception flags for:
* overflow & inexact (if it overflows to infinity)
* input denormal squashed to zero
* output denormal squashed to zero
Of these, we only care about the input-denormal flag, since
the output of the whole scale-and-convert operation will be
an integer (so squashed-output-denormal and overflow don't
apply). Suppress the others by saving the pre-scalb exception
flags and only copying across a potential input-denormal flag.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
The VFP conversion helpers for A32 round to zero as this is the only
rounding mode supported. Rename these helpers to make it clear that
they round to zero and are not suitable for use in the AArch64 code.
Signed-off-by: Will Newton <will.newton@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Make the VFP_CONV_FIX helpers a little more flexible in
preparation for the A64 uses. This requires two changes:
* use the correct softfloat conversion function based on itype
rather than always the int32 one; this is possible now that
softfloat provides int16 versions and necessary for the
future conversion-to-int64 A64 variants. This also allows
us to drop the awkward 'sign' macro argument.
* split the 'fsz' argument which currently controls both
width of the input float type and width of the output
integer type into two; this will allow us to specify the
A64 64-bit-int-to-single conversion function, where the
two widths are different.
We can also drop the (itype##_t) cast now that softfloat
guarantees that all the itype##_to_float* functions take
an integer argument of exactly the correct type.
Signed-off-by: Will Newton <will.newton@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
commit 5ce4f35781
"target-arm: A64: add set_pc cpu method"
introduces an array aarch64_cpus which is zero
size if this code is built without CONFIG_USER_ONLY.
In particular an attempt to iterate over this array produces a warning
under gcc 4.8.2:
CC aarch64-softmmu/target-arm/cpu64.o
/scm/qemu/target-arm/cpu64.c: In function ‘aarch64_cpu_register_types’:
/scm/qemu/target-arm/cpu64.c:124:5: error: comparison of unsigned
expression < 0 is always false [-Werror=type-limits]
for (i = 0; i < ARRAY_SIZE(aarch64_cpus); i++) {
^
cc1: all warnings being treated as errors
This is the result of ARRAY_SIZE being an unsigned type,
causing "i" to be promoted to unsigned int as well.
As zero size arrays are a gcc extension, it seems
cleanest to add a dummy element with NULL name,
and test for it during registration.
We'll be able to drop this when we add more CPUs.
Cc: Alexander Graf <agraf@suse.de>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20131223145216.GA22663@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
There is an inline duplication of the raw_read and raw_write function
bodies. Fix by just calling raw_read/raw_write instead.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: e69281b7e1462b346cb313cf0b89eedc0568125f.1388649290.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Use c13_context field instead of c13_fcse for CONTEXTIDR register
definition.
Signed-off-by: Sergey Fedorov <s.fedorov@samsung.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1387521191-15350-1-git-send-email-s.fedorov@samsung.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When setting rounding modes we currently just hardcode the numeric values
for rounding modes in a big switch statement.
With AArch64 support coming, we will need to refer to these rounding modes
at different places throughout the code though, so let's better give them
names so we don't get confused by accident.
Signed-off-by: Alexander Graf <agraf@suse.de>
[WN: Commit message tweak, use names from ARM ARM.]
Signed-off-by: Will Newton <will.newton@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This adds decoding support for C3.6.24 FP conditional select.
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This adds decoding support for C3.6.23 FP Conditional Compare.
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add decoding support for C3.6.22 Floating-point compare.
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds emulation for the fmov instruction working on scalars
with an immediate payload.
Signed-off-by: Alexander Graf <agraf@suse.de>
[WN: Commit message tweak, rebase and use new infrastructure.]
Signed-off-by: Will Newton <will.newton@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds emulation for the "Floating-point data-processing (3 source)"
group of instructions.
Signed-off-by: Alexander Graf <agraf@suse.de>
[WN: Commit message tweak, merged single and double precision patches.
Implement using muladd as suggested by Richard Henderson.]
Signed-off-by: Will Newton <will.newton@linaro.org>
[PMM: pull field decode up a level, use register accessors]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds emulation for the "Floating-point data-processing (2 source)"
group of instructions.
Signed-off-by: Alexander Graf <agraf@suse.de>
[WN: Commit message tweak, merge single and double precision patches. Rebase
and update to new infrastructure. Incorporate FMIN/FMAX support patch by
Michael Matz.]
Signed-off-by: Will Newton <will.newton@linaro.org>
[PMM:
* added convenience accessors for FP s and d regs
* pulled the field decode and opcode validity check up a level]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Use the VFP_BINOP macro to provide helpers for min, max, minnum
and maxnum, rather than hand-rolling them. (The float64 max
version is not used by A32 but will be needed for A64.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
The A64 128 bit vector registers are stored as a pair of
uint64_t values in the register array. This means that if
we're directly loading or storing a value of size less than
64 bits we must adjust the offset appropriately to account
for whether the host is bigendian or not. Provide utility
functions to abstract away the offsetof() calculations for
the FP registers.
For do_fp_st() we can sidestep most of the issues for 64 bit
and smaller reg-to-mem transfers by always doing a 64 bit
load from the register and writing just the piece we need
to memory.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
When dumping the current CPU state, we can also get a request
to dump the FPU state along with the CPU's integer state.
Add support to dump the VFP state when that flag is set, so that
we can properly debug code that modifies floating point registers.
Signed-off-by: Alexander Graf <agraf@suse.de>
[WN: Commit message tweak, rebased. Output all registers, two per-line.]
Signed-off-by: Will Newton <will.newton@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This implement exclusive loads/stores for aarch64 along the lines of
arm32 and ppc implementations. The exclusive load remembers the address
and loaded value. The exclusive store throws an an exception which uses
those values to check for equality in a proper exclusive region.
This is not actually the architecture mandated semantics (for either
AArch32 or AArch64) but it is close enough for typical guest code
sequences to work correctly, and saves us from having to monitor all
guest stores. It's fairly easy to come up with test cases where we
don't behave like hardware - we don't for example model cache line
behaviour. However in the common patterns this works, and the existing
32 bit ARM exclusive access implementation has the same limitations.
AArch64 also implements new acquire/release loads/stores (which may be
either exclusive or non-exclusive). These imposes extra ordering
constraints on memory operations (ie they act as if they have an implicit
barrier built into them). As TCG is single-threaded all our barriers
are no-ops, so these just behave like normal loads and stores.
Signed-off-by: Michael Matz <matz@suse.de>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
In preparation for adding support for A64 load/store exclusive instructions,
widen the fields in the CPU state struct that deal with address and data values
for exclusives from 32 to 64 bits. Although in practice AArch64 and AArch32
exclusive accesses will be generally separate there are some odd theoretical
corner cases (eg you should be able to do the exclusive load in AArch32, take
an exception to AArch64 and successfully do the store exclusive there), and it's
also easier to reason about.
The changes in semantics for the variables are:
exclusive_addr -> extended to 64 bits; -1ULL for "monitor lost",
otherwise always < 2^32 for AArch32
exclusive_val -> extended to 64 bits. 64 bit exclusives in AArch32 now
use the high half of exclusive_val instead of a separate exclusive_high
exclusive_high -> is no longer used in AArch32; extended to 64 bits as
it will be needed for AArch64's pair-of-64-bit-values exclusives.
exclusive_test -> extended to 64 bits, as it is an address. Since this is
a linux-user-only field, in arm-linux-user it will always have the top
32 bits zero.
exclusive_info -> stays 32 bits, as it is neither data nor address, but
simply holds register indexes etc. AArch64 will be able to fit all its
information into 32 bits as well.
Note that the refactoring of gen_store_exclusive() coincidentally fixes
a minor bug where ldrexd would incorrectly update the first CPU register
even if the load for the second register faulted.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Adds support for Load Register (literal), both normal
and SIMD/FP forms.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
this patch adds support for C3.5.4 - C3.5.5
Conditional compare (both immediate and register)
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
The common pattern for system registers in a 64-bit capable ARM
CPU is that when in AArch32 the cp15 register is a view of the
bottom 32 bits of the 64-bit AArch64 system register; writes in
AArch32 leave the top half unchanged. The most natural way to
model this is to have the state field in the CPU struct be a
64 bit value, and simply have the AArch32 TCG code operate on
a pointer to its lower half.
For aarch64-linux-user the only registers we need to share like
this are the thread-local-storage ones. Widen their fields to
64 bits and provide the 64 bit reginfo struct to make them
visible in AArch64 state. Note that minor cleanup of the AArch64
system register encoding space means We can share the TPIDR_EL1
reginfo but need split encodings for TPIDR_EL0 and TPIDRRO_EL0.
Since we're touching almost every line in QEMU that uses the
c13_tls* fields in this patch anyway, we take the opportunity
to rename them in line with the standard ARM architectural names
for these registers.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement an initial minimal set of EL0-visible system registers:
* NZCV
* FPCR
* FPSR
* CTR_EL0
* DCZID_EL0
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
The AArch64 equivalent of the traditional AArch32
cp15 coprocessor registers is the set of instructions
MRS/MSR/SYS/SYSL, which cover between them both true
system registers and the "operations with side effects"
such as cache maintenance which in AArch32 are mixed
in with other cp15 registers. Implement these instructions
to look in the cpregs hashtable for the register or
operation.
Since we don't yet populate the cpregs hashtable with
any registers with the "AA64" bit set, everything will
still UNDEF at this point.
MSR/MRS is the first user of is_jmp = DISAS_UPDATE, so
fix an infelicity in its handling where the main loop
was requiring the caller to do the update of PC rather
than just doing it itself.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
The cpregs APIs used by the decoder (get_arm_cp_reginfo() and
cp_access_ok()) currently take either a CPUARMState* or an ARMCPU*.
This is problematic for the A64 decoder, which doesn't pass the
environment pointer around everywhere the way the 32 bit decoder
does. Adjust the parameters these functions take so that we can
copy only the relevant info from the CPUARMState into the
DisasContext and then use that.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Replace assert_no_error() usages with the error_abort system.
&error_abort is passed into API calls to signal to the Error sub-system
that any errors are fatal. Removes need for caller assertions.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Update the generic cpreg support code to also handle AArch64:
AArch64-visible registers coexist in the same hash table with
AArch32-visible ones, with a bit in the hash key distinguishing
them.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
define_one_arm_cp_reg_with_opaque() has a set of nested loops which
insert a cpreg entry into the hashtable for each of the possible
opc/crn/crm values allowed by wildcard specifications. We're about
to add an extra loop to this nesting, so pull the core of the loop
(which adds a single entry to the hashtable) out into its own
function for clarity.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement FMOV, ie non-converting moves between general purpose
registers and floating point registers. This is a subtype of
the floating point <-> integer instruction class.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add a top level decoder skeleton for FP instructions.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add decoding for the exception generating instructions, and implement
SVC (syscalls) and BRK (software breakpoint).
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds emulation for the "Data-processing (3 source)"
family of instructions, namely MADD, MSUB, SMADDL, SMSUBL, SMULH,
UMADDL, UMSUBL, UMULH.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds emulation for the mov wide instructions
(MOVN, MOVZ, MOVK).
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the non-carry forms of addition and subtraction
(immediate, extended register and shifted register).
This includes the code to calculate NZCV if the instruction
calls for setting the flags.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This adds support for the pre/post-index ld/st forms with immediate
offsets as well as the un-scaled immediate form (which are all
variations on the same 9-bit immediate instruction form).
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This adds support for the load/store forms using a register offset.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This adds support for the forms of ld/st with a 12 bit
unsigned immediate offset.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch support the basic load and store pair instructions and
includes the generic helper functions:
* do_gpr_st()
* do_fp_st()
* do_gpr_ld()
* do_fp_ld()
* read_cpu_reg_sp()
* gen_check_sp_alignment()
The last function gen_check_sp_alignment() is a NULL op currently but
put in place to make it easy to add SP alignment checking later.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds support for C3.4.4 Logical (immediate),
which include AND, ANDS, ORR, EOR.
Signed-off-by: Alexander Graf <agraf@suse.de>
[claudio: adapted to new decoder, function renaming,
removed a TCG temp variable]
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
[PMM: cleaned up some unnecessary code in logic_imm_decode_wmask
and added clarifying commentary on what it's actually doing.
Dropped an ext32u that's not needed if we've just done an AND.]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
this patch adds support for the CLS instruction.
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This adds support for C5.6.149 REV, C5.6.151 REV32, C5.6.150 REV16.
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This adds support for the C5.6.147 RBIT instruction.
Signed-off-by: Alexander Graf <agraf@suse.de>
[claudio: adapted to new decoder, use bswap64,
make RBIT part standalone from the rest of the patch,
splitting REV into a separate patch]
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds support for decoding 1-src data processing insns,
and the first user, C5.6.40 CLZ (count leading zeroes).
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds support for decoding 2-src data processing insns,
and the first users, UDIV and SDIV.
Signed-off-by: Alexander Graf <agraf@suse.de>
[claudio: adapted to new decoder adding the 2-src decoding level,
always zero-extend result in 32bit mode]
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds emulation support for the EXTR instruction.
Signed-off-by: Alexander Graf <agraf@suse.de>
[claudio: adapted for new decoder, removed a few temporaries,
fixed the 32bit bug, added checks for more
unallocated cases]
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add support for the instructions described in
"C3.4.6 PC-rel. addressing" (ADR and ADRP).
Signed-off-by: Alexander Graf <agraf@suse.de>
[claudio: adapted to new decoder structure]
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add support for the instructions described in "C3.5.10 Logical
(shifted register)".
We store the flags in the same locations as the 32 bit decoder.
This is slightly awkward when calculating 64 bit results, but seems
a better tradeoff than having to rework the whole 32 bit decoder
and also make 32 bit result calculation in A64 awkward.
Signed-off-by: Alexander Graf <agraf@suse.de>
[claudio: some refactoring to avoid hidden allocation of temps,
rework flags, use enums for shift types,
renaming of functions]
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
[PMM: Use TCG's andc/orc/eqv ops rather than manually inverting]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds support for the instruction group "C3.5.6
Conditional select": CSEL, CSINC, CSINV, CSNEG.
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
[PMM: Improved code generated in the nomatch case as per RTH suggestions]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds emulation for the compare and branch insns,
CBZ and CBNZ.
Signed-off-by: Alexander Graf <agraf@suse.de>
[claudio: adapted to new decoder,
compare with immediate 0,
introduce read_cpu_reg to get the 0 extension on (!sf)]
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds emulation for the test and branch insns,
TBZ and TBNZ.
Signed-off-by: Alexander Graf <agraf@suse.de>
[claudio:
adapted for new decoder
always compare with 0
remove a TCG temporary
]
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This patch adds emulation for the conditional branch (b.cond) instruction.
Signed-off-by: Alexander Graf <agraf@suse.de>
[claudio: adapted to new decoder structure,
reused arm infrastructure for checking the flags]
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement BR, BLR and RET. This is all of the 'unconditional
branch (register)' instruction category except for ERET
and DPRS (which are system mode only).
Signed-off-by: Alexander Graf <agraf@suse.de>
[claudio: reimplemented on top of new decoder structure]
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement the B and BL instructions (PC relative branches and calls).
For convenience in managing TCG temporaries which might be generated
if a source register is the zero-register XZR, we provide a simple
mechanism for creating a new temp which is automatically freed at the
end of decode of the instruction.
Signed-off-by: Alexander Graf <agraf@suse.de>
[claudio: renamed functions, adapted to new decoder layout]
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Decode the various kinds of system instructions:
hints (HINT), which include NOP, YIELD, WFE, WFI, SEV, SEL
sync instructions, which include CLREX, DSB, DMB, ISB
msr_i, which move immediate to processor state field
sys, which include all SYS and SYSL instructions
msr, which move from a gp register to a system register
mrs, which move from a system register to a gp register
Provide implementations where they are trivial nops.
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Provide a skeleton for a64 instruction decoding in translate-a64.c,
by dividing instructions into the classes defined by the
ARM Architecture Reference Manual(DDI0487A_a) section C3.
Signed-off-by: Claudio Fontana <claudio.fontana@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
We will need helpers that only make sense with AArch64. Add
helper-a64.{c,h} files as stubs that we can fill with these
helpers in the following patches.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Register the aarch64-fpu XML and implement the necessary
read/write handlers so we can support reading and writing
of FP registers in the gdb stub.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
The information which AArch32 holds in the FPSCR is split for
AArch64 into two logically distinct registers, FPSR and FPCR.
Since they are carefully arranged to use non-overlapping bits,
we leave the underlying state in the same place, and provide
accessor functions which just update the appropriate bits
via vfp_get_fpscr() and vfp_set_fpscr().
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
When executing translation blocks we need to be able to recover
our program counter. Add a method to set it for AArch64 CPUs.
This covers user-mode, but for system mode emulation we will
need to check if the CPU is in an AArch32 execution state.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
The A32/T32 gen_intermediate_code_internal() is complicated because it
has to deal with:
* conditionally executed instructions
* Thumb IT blocks
* kernel helper page
* M profile exception-exit special casing
None of these apply to A64, so putting the "this is A64 so
call the A64 decoder" check in the middle of the A32/T32
loop is confusing and means the A64 decoder's handling of
things like conditional jump and singlestepping has to take
account of the conditional-execution jumps the main loop
might emit.
Refactor the code to give A64 its own gen_intermediate_code_internal
function instead.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Add the bare minimum set of functions needed for control of an
AArch64 KVM vcpu:
* CPU initialization
* minimal get/put register functions which only handle the
basic state of the CPU
Signed-off-by: Mian M. Hamayun <m.hamayun@virtualopensystems.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1385645602-18662-4-git-send-email-peter.maydell@linaro.org
[PMM: significantly overhauled; most notably:
* code lives in kvm64.c rather than using #ifdefs
* support '-cpu host' rather than implicitly using whatever the
host's CPU is regardless of what the user requests
* fix bug attempting to get/set nonexistent X[31]
* fix bug writing 64 bit kernel pstate into uint32_t env field
]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
The env->pstate field is a little odd since it doesn't strictly
speaking represent an architectural register. However it's convenient
for QEMU to use it to hold the various PSTATE architectural bits
in the same format the architecture specifies for SPSR registers
(since this is the same format the kernel uses for signal handlers
and the KVM register). Add some structure to how we deal with it:
* document what env->pstate is
* add some #defines for various bits in it
* add helpers for reading/writing it taking account of caching
of NZCV, and use them where appropriate
* reset it on startup
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1385645602-18662-3-git-send-email-peter.maydell@linaro.org
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Split ARM KVM support code which is 32 bit specific out into its
own file, which we only compile on 32 bit hosts. This will give
us a place to add the 64 bit support code without adding lots of
ifdefs to kvm.c.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1385645602-18662-2-git-send-email-peter.maydell@linaro.org
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
If hivecs are being used on reset, the CPU should come out of reset at
the hivecs reset vector (0xFFFF0000)
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 3afc69c4f58f60aa2bbee7b91574a4eb414b1c23.1387160489.git.peter.crosthwaite@xilinx.com
[ PC Changes:
* Fixed Grammar error in commit message
* Elaborated commit message.
]
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add an ARM CPU property for the reset value of hivecs as it is a
board/SoC configurable setting.
The existence of the property is conditional on the ARM CPU not being M
class.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: b04216c6bda4bd163f44a55bba552d0e8267481f.1387160489.git.peter.crosthwaite@xilinx.com
[ PC Changes:
* Elaborated commit message
* refactored to use qdev_property_add_static
]
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The reset value of the CP15 CBAR is a vendor (machine) configurable
property. If ARM_FEATURE_CBAR is set, add it as a property at
post_init time.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 2f1eec3f912135deea6252360e03645003d12e0a.1387160489.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Some processors (notably A9 within Highbank) define and use the
CP15 configuration base address (CBAR). This is vendor specific
so its best implemented as a CPU property (otherwise we would need
vendor specific child classes for every ARM implementation).
This patch prepares support for converting CBAR reset value to
a CPU property by moving the CP registration out of the CPU
init fn, as registration will need to happen at realize time
to pick up any property updates. The easiest way to do this
is via definition of a new ARM_FEATURE to flag the existence
of the register.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 9f697ef1e2ee60a3b9ef971a7f3bc3fa6752a9b7.1387160489.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The cp15.c15 space is implementation defined. Currently there is a
dummy placeholder register RAZing it. Allow overriding of this RAZ
so implementations of specific registers can take precedence.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: ed1bacec56dae00cb398c798f8240e8e685f949c.1387160489.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This adds support for the AESE/AESD/AESMC/AESIMC instructions that
are available on some v8 implementations of Aarch32.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Message-id: 1386266078-6976-1-git-send-email-ard.biesheuvel@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Current implementation is not accurate according to ARMv7-AR reference
manual. See "B4.1.153 TTBCR, Translation Table Base Control Register,
VMSA | TTBCR format when using the Long-descriptor translation table
format". When LPAE feature is supported, EAE, bit[31] selects
translation descriptor format and, therefore, TTBCR format.
Signed-off-by: Sergey Fedorov <s.fedorov@samsung.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1386657709-23399-1-git-send-email-s.fedorov@samsung.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Retain the existing gen_aa32_* inlines, to aid compilation for A64.
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-id: 1386628626-21627-1-git-send-email-rth@twiddle.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This adds support for the ARMv8 Advanced SIMD VMAXNM and VMINNM
instructions.
Signed-off-by: Will Newton <will.newton@linaro.org>
Message-id: 1386158099-9239-7-git-send-email-will.newton@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This adds support for the ARMv8 floating point VMAXNM and VMINNM
instructions.
Signed-off-by: Will Newton <will.newton@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1386158099-9239-6-git-send-email-will.newton@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This adds support for the VSEL floating point selection instruction
which was added in ARMv8.
Signed-off-by: Will Newton <will.newton@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1386158099-9239-3-git-send-email-will.newton@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Floating point is an extension to the instruction set rather than
a coprocessor, so call it directly from the ARM and Thumb decode
functions.
Signed-off-by: Will Newton <will.newton@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1386158099-9239-2-git-send-email-will.newton@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Implement '-cpu host' for ARM when we're using KVM, broadly
in line with other KVM-supporting architectures.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Message-id: 1385140638-10444-11-git-send-email-peter.maydell@linaro.org
Instead of assuming that a KVM target CPU must always be a
Cortex-A15 and hardcoding this in kvm_arch_init_vcpu(),
store the KVM_ARM_TARGET_* value in the ARMCPU class,
and use that.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Message-id: 1385140638-10444-10-git-send-email-peter.maydell@linaro.org
New ARM boards are generally expected to boot their secondary CPUs
via the PSCI interface, rather than ad-hoc "loop around in holding
pen code" as hw/arm/boot.c implements. In particular this is
necessary for mach-virt kernels. For KVM we achieve this by creating
the VCPUs with a feature flag marking them as starting in PSCI
powered-down state; the guest kernel will then make a PSCI call
(implemented in the host kernel) to start the secondaries at
an address of its choosing once it has got the primary CPU up.
Implement this setting of the feature flag, controlled by a
qdev property for ARMCPU, which board code can set if it is a
PSCI system.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Message-id: 1385140638-10444-7-git-send-email-peter.maydell@linaro.org
Linux requires device tree CPU nodes to include a 'compatible'
string describing the CPU. Add a field in the ARMCPU struct for
this so that boards which construct a device tree can insert
the correct CPU nodes.
Note that there is currently no officially specified 'compatible'
string for the TI925T, Cortex-M3 or SA1110 CPUs.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Message-id: 1385140638-10444-6-git-send-email-peter.maydell@linaro.org
Provide versions of the KVM PSCI constants to non-KVM code;
this will allow us to avoid an ifdef in boards which set up
a PSCI node in the device tree.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Message-id: 1385140638-10444-5-git-send-email-peter.maydell@linaro.org
There are a number of places where it would be convenient for ARM
code to have working definitions of KVM constants even in code
which is compiled with CONFIG_KVM not set. In this situation we
can't simply include the kernel KVM headers (which might conflict
with host header definitions or not even compile on the compiler
we're using) so we have to redefine equivalent constants.
Provide a mechanism for doing this and checking that the values
match, and use it for the constants we're currently exposing
via an ad-hoc mechanism.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Message-id: 1385140638-10444-2-git-send-email-peter.maydell@linaro.org
The compare_u64 function was not sorting the KVM cpreg_list in the
right way due to the wrong returned value. Since we are comparing
two 64bit values we can't simply return their difference if the
returned type is int.
Signed-off-by: Alvise Rigo <a.rigo@virtualopensystems.com>
Message-id: 1381513125-26802-2-git-send-email-a.rigo@virtualopensystems.com
[PMM: fixed coding style, indent and commit message formatting]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Both KVM and TCG populate the cpreg_list with 64 bit register IDs,
but in the TCG side the cpreg_list is sorted using the 32 bit ID
version while in the kvm side the 64 bit ID version is used. This
patch makes the sorting of the cpreg_list consistent between KVM and
TCG.
Signed-off-by: Alvise Rigo <a.rigo@virtualopensystems.com>
Message-id: 1381513125-26802-1-git-send-email-a.rigo@virtualopensystems.com
[PMM: fixed indent, coding style and commit message formatting]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Added Vector Base Address remapping on ARM v7.
Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
[PMM: removed spurious mask of value with 1<<31]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# By Peter Maydell (3) and Ákos Kovács (2)
# Via Paolo Bonzini
* bonzini/configure:
ui/Makefile.objs: delete unnecessary cocoa.o dependency
default-configs/: CONFIG_GDBSTUB_XML removed
Makefile.target: CONFIG_NO_* variables removed
rules.mak: New string testing functions
rules.mak: New logical functions for handling y/n values
CONFIG_NO_* variables replaced with the lnot logical function
Signed-off-by: Ákos Kovács <akoskovacs@gmx.com>
[PMM: fixed a few CONFIG_NO_* uses that were missed]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
# By Richard Henderson
# Via Richard Henderson
* rth/tcg-pull:
exec: Add both big- and little-endian memory helpers
tcg: Add qemu_ld_st_i32/64
tcg: Add TCGMemOp
configure: Remove CONFIG_QEMU_LDST_OPTIMIZATION
tcg: Add tcg-be-ldst.h
tcg: Add tcg-be-null.h
exec: Delete is_tcg_gen_code and GETRA_EXT
tcg-aarch64: Update to helper_ret_*_mmu routines
tcg: Merge tcg_register_helper into tcg_context_init
tcg: Add tcg-runtime.c helpers to all_helpers
tcg: Put target helper data into an array.
tcg: Remove stray semi-colons from target-*/helper.h
tcg: Move helper registration into tcg_context_init
target-m68k: Rename helpers.h to helper.h
tcg: Use a GHashTable for tcg_find_helper
tcg: Delete tcg_helper_get_name declaration
tcg-hppa: Remove tcg backend
Message-id: 1381440525-6666-1-git-send-email-rth@twiddle.net
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
* Fix for X86CPU model field of qemu32/qemu64 CPU models
* Bug fix for longjmp on FreeBSD
* Removal of unused function
* Confinement of clone syscall infrastructure to linux-user
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Merge remote-tracking branch 'afaerber/tags/qom-cpu-for-anthony' into staging
QOM CPUState refactorings / X86CPU
* Fix for X86CPU model field of qemu32/qemu64 CPU models
* Bug fix for longjmp on FreeBSD
* Removal of unused function
* Confinement of clone syscall infrastructure to linux-user
# gpg: Signature made Wed 09 Oct 2013 03:40:51 AM PDT using RSA key ID 3E7E013F
# gpg: Can't check signature: public key not found
# By Andreas Färber (2) and others
# Via Andreas Färber
* afaerber/tags/qom-cpu-for-anthony:
cpu: Drop cpu_model_str from CPU_COMMON
cpu: Move cpu_copy() into linux-user
cputlb: Remove dead function tlb_update_dirty()
cpu-exec: Also reload CPUClass *cc after longjmp return in cpu_exec()
target-i386: Set model=6 on qemu64 & qemu32 CPU models
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>
Since this is only read in cpu_copy() and linux-user has a global
cpu_model, drop the field from generic code.
Signed-off-by: Andreas Färber <afaerber@suse.de>
We want to be able to debug AArch64 guests. So let's add the respective gdb
stub functions and xml descriptions that allow us to do so.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378235544-22290-12-git-send-email-peter.maydell@linaro.org
Message-id: 1368505980-17151-6-git-send-email-john.rigby@linaro.org
[PMM: dropped unused fp regs XML for now; moved 64 bit only functions
to new gdbstub64.c; these are hooked up in AArch64CPU, not via
ifdefs in ARMCPU]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We should translate AArch64 mode separately from AArch32 mode. In AArch64 mode,
registers look vastly different, instruction encoding is completely different,
basically the system turns into a different machine.
So let's do a simple if() in translate.c to decide whether we can handle the
current code in the legacy AArch32 code or in the new AArch64 code.
So far, the translation always complains about unallocated instructions. There
is no emulator functionality in this patch!
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378235544-22290-11-git-send-email-peter.maydell@linaro.org
Message-id: 1368505980-17151-5-git-send-email-john.rigby@linaro.org
[PMM:
* provide no-op versions of a64 functions ifndef TARGET_AARCH64;
this lets us avoid #ifdefs in translate.c
* insert the missing call to disas_a64_insn()
* stash the insn in the DisasContext rather than reloading it in
real_unallocated_encoding()
]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This patch adds all the prerequisites for AArch64 support that didn't
fit into split up patches. It extends important bits in the core cpu
headers to also take AArch64 mode into account.
Add new ARM_TBFLAG_AARCH64_STATE translation buffer flag
indicate an ARMv8 cpu running in aarch64 mode vs aarch32 mode.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378235544-22290-10-git-send-email-peter.maydell@linaro.org
Message-id: 1368505980-17151-4-git-send-email-john.rigby@linaro.org
[PMM:
* rearranged tbflags so AArch64? is bit 31 and if it is set then
30..0 are freely available for whatever makes most sense for that mode
* added version bump since we change VFP migration state
* added a comment about how VFP/Neon register state works
* physical address space is 48 bits, not 64
* added ARM_FEATURE_AARCH64 flag to identify 64-bit capable CPUs
]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
If we're building aarch64-linux-user then the 32 bit CPUs are
all unwanted, because they can't possibly execute the 64 bit
binaries we will be running; disable them.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378235544-22290-9-git-send-email-peter.maydell@linaro.org
Create a new AArch64CPU class; all 64-bit capable ARM
CPUs are subclasses of this. (Currently we only support
one, the "any" CPU used by linux-user.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378235544-22290-8-git-send-email-peter.maydell@linaro.org
We want gen_set_pc_im() to work for both AArch64 and AArch32, but
to do this we'll need the DisasContext* so we can tell which mode
we're in, so pass it in as a parameter.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378235544-22290-7-git-send-email-peter.maydell@linaro.org
Correct a few places that were using uint32_t or a 32 bit
only format string to handle something that should be a target_ulong.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378235544-22290-6-git-send-email-peter.maydell@linaro.org
[PMM: split out to separate patch; added gen_goto_tb() and
gen_set_pc_im() dest params to list of things to change.]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The cpu_env tcg variable will be used by both the AArch32 and AArch64
handling code. Unstaticify it, so that both sides can make use of it.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378235544-22290-5-git-send-email-peter.maydell@linaro.org
Message-id: 1368505980-17151-3-git-send-email-john.rigby@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We will need to share the disassembly status struct between AArch32 and
AArch64 modes. So put it into a header file that both sides can use.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378235544-22290-4-git-send-email-peter.maydell@linaro.org
Message-id: 1368505980-17151-2-git-send-email-john.rigby@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
AArch32 code (ie traditional 32 bit world) expects to be
able to pass a vaddr in a TCGv_i32. However when QEMU is
compiled with TARGET_LONG_BITS=32 the TCG load/store
functions take a TCGv_i64. Abstract out load/store with
a 32 bit vaddr so we have a place to put the zero extension
of the vaddr and the extension/truncation of the data value.
Apart from the function definitions most of this patch is
a simple s/tcg_gen_qemu_/gen_aa32_/.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378235544-22290-3-git-send-email-peter.maydell@linaro.org
When the initial SP is loaded from the vector table on ARMv7M systems the two
least significant bits are ignored as the stack is always aligned at a four byte
boundary (see ARM DDI 0403C, B1.4.1 and B1.5.5). So far QEMU did not ignore
these bits leading to a stack alignment inconsitent with real hardware for
binaries that rely on this behaviour. This patch fixes this issue by masking the
two least significant bits when loading the SP.
Signed-off-by: Sebastian Ottlik <ottlik@fzi.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378286595-27072-1-git-send-email-ottlik@fzi.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Avoid the undefined behaviour of "1 << 31" by using 1U to make
the shift be of an unsigned value rather than shifting into the
sign bit of a signed integer. For consistency, we make all the
CPSR_* constants unsigned, though the only one which triggers
undefined behaviour is CPSR_N.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-id: 1378391908-22137-3-git-send-email-peter.maydell@linaro.org
In the decode of ARM B and BL insns, swap the order of the
"append 2 implicit zeros to imm24" and the sign extend, and
use the new sextract32() utility function to do the latter.
This avoids a direct dependency on the undefined C behaviour
of shifting into the sign bit of an integer.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-id: 1378391908-22137-2-git-send-email-peter.maydell@linaro.org
Make the 'any' CPU for target-arm available only in linux-user mode.
The ARM target provides a CPU named "any", which turns on support for
all user-level instruction set extensions we know about. This is
intended for linux-user emulation mode, where it is the default CPU type.
It makes no sense to try to use this for system emulation, since we don't
initialize it with any system-level information like feature register
values or implementation specific cp15 registers. (Unsurprisingly, some
boards won't boot at all, though you might get lucky in some cases where
the guest doesn't happen to prod things that aren't there.)
Prevent users from making this command line error by removing the
CPU definition from the softmmu build.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Message-id: 1378213995-12945-1-git-send-email-peter.maydell@linaro.org
# By Stefan Weil (6) and others
# Via Michael Tokarev
* mjt/trivial-patches:
aio / timers: use g_usleep() not sleep()
adlib: sort offsets in portio registration
qmp: fix integer usage in examples
tci: Remove function tcg_out64 (fix broken build)
target-arm: Report unimplemented opcodes (LOG_UNIMP)
pflash_cfi02.c: fix debug macro
configure: Remove unneeded redirections of stderr (pkg-config --exists)
configure: Remove unneeded redirections of stderr (pkg-config --cflags, --libs)
configure: Don't write .pyc files by default (python -B)
curl: qemu_bh_new() can never return NULL
slirp/arp_table.c: Avoid shifting into sign bit of signed integers
configure: disable clang -Wstring-plus-int warning
rdma: silly ipv6 bugfix
misc: Fix some typos in names and comments
slirp: Port redirection option behave differently on Linux and Windows
Message-id: 1378119695-14568-1-git-send-email-mjt@msgid.tls.msk.ru
Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
These unimplemented opcodes are handled like illegal opcodes, but
they are used in existing code. We should at least report when they
are executed.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This is an autogenerated patch using scripts/switch-timer-api.
Switch the entire code base to using the new timer API.
Note this patch may introduce some line length issues.
Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The ARMv7 architecture specifies a 'generic timer' which is implemented
via cp15 registers. Newer kernels will prefer to use this rather than
a devboard-level timer. Implement the generic timer for TCG; for KVM
we will already use the hardware's virtualized timer for this.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Message-id: 1376065080-26661-4-git-send-email-peter.maydell@linaro.org
Add an ARM_CP_IO flag which an ARMCPRegInfo definition can use to
indicate that the register's implementation does I/O and thus
its accesses need to be surrounded by gen_io_start()/gen_io_end()
in order for icount to work. Most notably, cp registers which
implement clocks or timers need this.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Message-id: 1376065080-26661-3-git-send-email-peter.maydell@linaro.org
Extend the raw_read() and raw_write() helper accessors so that
they can be used for 64 bit registers as well as 32 bit registers.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Message-id: 1376065080-26661-2-git-send-email-peter.maydell@linaro.org
Now that ARMCPU is a subclass of DeviceState, we can make the
CPU's inbound IRQ and FIQ lines be simply gpio lines, which
means we can remove the odd arm_pic shim.
We retain the arm_pic_init_cpu() function as a backwards
compatibility shim layer so we can convert the board models
to get the IRQ and FIQ lines directly from the ARMCPU
object one at a time.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1375977856-25046-2-git-send-email-peter.maydell@linaro.org
The 'int' loglevel for recording interrupts and exceptions
requires support in the target-specific code. Implement
it for ARM. This improves debug logging in some situations
that were otherwise pretty opaque, such as when we fault
trying to execute at an exception vector address, which
would otherwise cause an infinite loop of taking exceptions
without any indication in the debug log of what was going on.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-id: 1375700771-21665-1-git-send-email-peter.maydell@linaro.org
Commit c643bed99 moved qemu_init_vcpu() calls to common CPUState code.
This causes x86 cpu-add to fail with "KVM: setting VAPIC address failed".
The reason for the failure is that CPUClass::kvm_fd is not yet
initialized in the following call graph:
->x86_cpu_realizefn
->x86_cpu_apic_realize
->qdev_init
->device_set_realized
->device_reset (hotplugged == 1)
->apic_reset_common
->vapic_base_update
->kvm_apic_vapic_base_update
This causes attempted KVM vCPU ioctls to fail.
By contrast, in the non-hotplug case the APIC is reset much later, when
the vCPU is already initialized.
As a quick and safe solution, move the qemu_init_vcpu() call back into
the targets' realize functions.
Reported-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Acked-by: Igor Mammedov <imammedo@redhat.com> (for i386)
Tested-by: Jia Liu <proljc@gmail.com> (for openrisc)
Signed-off-by: Andreas Färber <afaerber@suse.de>
The macro g_assert_not_reached is a better self documenting replacement
for assert(0) or assert(false).
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Replace the GDB_CORE_XML define in gdbstub.c with a CPUClass field.
Use first_cpu for qSupported and qXfer:features:read: for now.
Add a stub for xml_builtin.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Completes migration of target-specific code to new target-*/gdbstub.c.
Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa)
Signed-off-by: Andreas Färber <afaerber@suse.de>
This avoids polluting the global namespace with a non-prefixed macro and
makes it obvious in the call sites that we return.
Semi-automatic conversion using, e.g.,
sed -i 's/GET_REGL(/return gdb_get_regl(mem_buf, /g' target-*/gdbstub.c
followed by manual tweaking for sparc's GET_REGA() and Coding Style.
Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa)
Signed-off-by: Andreas Färber <afaerber@suse.de>
CPUState::gdb_num_regs replaces num_g_regs.
CPUClass::gdb_num_core_regs replaces NUM_CORE_REGS.
Allows building gdb_register_coprocessor() for xtensa, too.
As a side effect this should fix coprocessor register numbering for SMP.
Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa)
Signed-off-by: Andreas Färber <afaerber@suse.de>
Change breakpoint_invalidate() argument to CPUState alongside.
Since all targets now assign a softmmu-only field, we can drop helpers
cpu_class_set_{do_unassigned_access,vmsd}() and device_class_set_vmsd().
Prepares for changing cpu_memory_rw_debug() argument to CPUState.
Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa)
Signed-off-by: Andreas Färber <afaerber@suse.de>
Callback implementations were specific to arm and m68k, so can easily
cast to ARMCPU and M68kCPU respectively.
Prepares for changing GDBState::c_cpu to CPUState.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Prepares for changing cpu_single_step() argument to CPUState.
Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Signed-off-by: Andreas Färber <afaerber@suse.de>
Where no extra implementation is needed, fall back to CPUClass::set_pc().
Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Signed-off-by: Andreas Färber <afaerber@suse.de>
This moves setting the Program Counter from gdbstub into target code.
Use vaddr type as upper-bound replacement for target_ulong.
Signed-off-by: Andreas Färber <afaerber@suse.de>
g_hash_table_get_keys() was only introduced in glib 2.14, and we're
still targeting a minimum version of 2.12. Rewrite the offending
code (introduced in commit 721fae1) to use g_hash_table_foreach()
to build the list of keys.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Tested-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 1372678819-8633-1-git-send-email-peter.maydell@linaro.org
LPAE CPUs have more potentially valid bits in the TTBCR, and so the
simple masking out of invalid bits is no longer sufficient to obtain
the base address width field of the register, which is what we use to
precalculate c2_mask and c2_base_mask. Explicitly extract the
relevant register field rather than simply shifting by the register
value.
This bug would have had no ill effects in practice, since if the
EAE bit (TTBCR bit 31) is set then we don't use the precalculated
masks, and if EAE is zero then bits 30..3 are all UNK/SBZP, so
well-behaved guests won't set them. However the shift is undefined
behaviour, so we should avoid it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1372347527-4428-1-git-send-email-peter.maydell@linaro.org
Allow for defining const opaque data in ARM CP register definitions by
setting .opaque = foo. If non null opaque is passed into
define_one_arm_cp_reg_with_opaque then that opaque will take
precedence, otherwise if null opaque is passed, the original opaque
data will be used.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: cf0a3ac3438d97464240db9f5f4ef1585cbc1d77.1373429432.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Unimplemented registers in the cp15, CRn=0, opc1=0, CRm=0 space default
to aliasing the MIDR register. Set all registers in the space to access
MIDR by default.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 6127846712b7ad2727354a4f5e1d809451f1e859.1373429432.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The if block detecting OMAP/StrongARM modifies the id_cp_reginfo
.access fields in place. So there is no need to replicate the call
to define_arm_cp_reg(). Dropped, and let the OMAP case fall through
to the normal behaviour after the in-place modification.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 72aae9b8ebbc9a76d2b06faf8666ef8a4b34b92a.1373429432.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The ARMv8 SEVL instruction is in the architectural hint space already
emulated as nop. This makes the decoding of SEVL explicit for clarity.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Message-id: 1370606786-5650-3-git-send-email-mans@mansr.com
[PMM: added 'SEVL' to the TODO comment]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This adds support for the ARMv8 load acquire/store release instructions.
Since qemu does nothing special for memory barriers, these can be
emulated like their non-acquire/release counterparts.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
x86 was using additional CPU_DUMP_* flags, so make that configurable in
CPUClass::reset_dump_flags.
This adds reset logging for alpha, unicore32 and xtensa.
Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Since commit 878096eeb2 (cpu: Turn
cpu_dump_{state,statistics}() into CPUState hooks) CPUArchState is no
longer needed.
Add documentation and make the functions available through qemu/log.h
outside NEED_CPU_H to allow use in qom/cpu.c. Moving them to qom/cpu.h
was not yet possible due to convoluted include paths, so that some
devices grow an implicit and unneeded dependency on qom/cpu.h for now.
Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Reviewed-by: Richard Henderson <rth@twiddle.net>
[AF: Simplified mb_cpu_do_interrupt() and do_interrupt_all() changes]
Signed-off-by: Andreas Färber <afaerber@suse.de>
Also use bool type while at it.
Prepares for moving singlestep_enabled field to CPUState.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
A transition from CPUFooState to FooCPU can be considered safe,
just like FooCPU::env access in the opposite direction.
The only benefit of the FOO_CPU() casts would be protection against
bogus CPUFooState pointers, but then surrounding code would likely
break, too.
This should slightly improve interrupt etc. performance when going from
CPUFooState to FooCPU.
For any additional CPU() casts see 3556c233d9
(qom: allow turning cast debugging off).
Reported-by: Anthony Liguori <aliguori@us.ibm.com>
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
The functions cpu_clone_regs() and cpu_set_tls() are not purely CPU
related -- they are specific to the TLS ABI for a a particular OS.
Move them into the linux-user/ tree where they belong.
target-lm32 had entirely unused implementations, since it has no
linux-user target; just drop them.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Add ref/unref calls at the following places:
- places where memory regions are stashed by a listener and
used outside the BQL (including in Xen or KVM).
- memory_region_find callsites
- creation of aliases and containers (only the aliased/contained
region gets a reference to avoid loops)
- around calls to del_subregion/add_subregion, where the region
could disappear after the first call
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This allows to move the call into CPUState's realizefn.
Therefore move the stub into libqemustub.a.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Make cpustats monitor command available unconditionally.
Prepares for changing kvm_handle_internal_error() and kvm_cpu_exec()
arguments to CPUState.
Signed-off-by: Andreas Färber <afaerber@suse.de>
The v7 ARM ARM specifies that the Large Physical Address
Extension requires implementation of the Multiprocessing
Extensions, so make our LPAE feature imply V7MP rather
than specifying both in the A15 CPU initfn.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Message-id: 1371127899-10364-1-git-send-email-peter.maydell@linaro.org
Use the tuple list of cp registers for syncing KVM state to QEMU,
rather than only syncing a very minimal set by hand.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Since the ARM KVM API doesn't include a "reset this VCPU"
ioctl, we have to capture the initial values of every
register it knows about so that we can reset the VCPU
by feeding those values back again.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When using KVM, use the kernel's initial state to set up the
cpreg list, and sync to and from the kernel when doing
migration.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Convert the TCG ARM target to using an (index,value) list for migrating
coprocessors. The primary benefit of the (index,value) list is for
passing state between KVM and QEMU, but it works for TCG-to-TCG
migration as well and is a useful self-contained first step.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Mark up coprocessor register definitions to add raw access
functions or mark the register as non-migratable where necessary.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
For reading and writing register values from the kernel for KVM,
we need to provide accessor functions which are guaranteed to succeed
and don't impose access checks, mask out unwritable bits, etc.
Define new fields raw_readfn and raw_writefn for this purpose;
these only need to be provided if there is a readfn or writefn
already and it is not suitable.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Relax the "is this a valid ARMCPRegInfo type value?" check to permit
"special" cpregs to have flags other than ARM_CP_SPECIAL set. At
the moment none of the other flags are relevant for special regs,
but the migration related flag we're about to introduce can apply
here too.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# By Michael Tokarev (4) and others
# Via Michael Tokarev
* mjt/trivial-patches-next: (26 commits)
piix: fix some printf errors when debug is enabled
cputlb: fix debug logs
create qemu_openpty_raw() helper function and move it to a separate file
main-loop: do not include slirp/slirp.h, use libslirp.h instead
libcacard/vscclient: fix leakage of socket on error paths
linux-headers: Update to v3.10-rc5
KVM: PPC: Add dummy kvm_arch_init_irq_routing()
KVM: S390: Add dummy kvm_arch_init_irq_routing()
KVM: ARM: Add dummy kvm_arch_init_irq_routing()
ivshmem: add missing error exit(2)
hw/xen: Use g_free instead of free and fix potential memory leaks
target-sparc: Replace free by g_free
hw/scsi: Don't increment a boolean value
device tree: Fix cppcheck warning
Makefile: Install qemu-img and qemu-nbd man pages only if built
Unbreak -no-quit for GTK, validate SDL options
gtk: implement -full-screen
char/serial: serial_ioport_write: Factor out common code
char/serial: Use generic Fifo8
char/serial: cosmetic fixes.
...
Message-id: 1371207042-17980-1-git-send-email-mjt@msgid.tls.msk.ru
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The common KVM code insists on calling kvm_arch_init_irq_routing()
as soon as it sees kernel header support for it (regardless of whether
QEMU supports it). Provide a dummy function to satisfy this.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
The rfe instruction has been broken since patch
5a839c0d54 because of a typo.
Signed-off-by: Peter Chubb <peter.chubb@nicta.com.au>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Fix these warnings from cppcheck:
hw/display/cirrus_vga.c:2603:
hw/sd/sd.c:348:
hw/timer/exynos4210_mct.c:1033:
target-arm/translate.c:9886:
target-s390x/mem_helper.c:518:
target-unicore32/translate.c:1936:
style: Consecutive return, break, continue, goto or throw statements are unnecessary.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
All the uses of the gen_{ld,st}* functions are gone now, so remove
the functions themselves.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
gen_ld64() and gen_st64() are used only in one place, so just
expand them out.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
TCGv changes size depending on the compile time value of
TARGET_LONG_BITS. This is useful for generating code for MIPS style
"instructions are the same but the register width changes" CPUs, and
also for the generic bits of QEMU which operate on "width of a
virtual address" values, but mostly in the ARM target code we were
using it purely as a shorthand for "any 32 bit value".
This needs to change in preparation for AArch64 support, since an
AArch64-capable v8 core will have 64 bit virtual addresses but still
use 32 bit values for the 32 bit instruction set.
This patch mechanically converts all the occurrences of TCGv,
tcg_temp_new(), tcg_temp_free(), tcg_temp_local_new() and
TCGV_UNUSED() to their explicitly 32 bit counterparts. This is
correct for everything except the arguments to tcg_gen_qemu_{ld,st}*,
which really do need to be TCGv and so will require a 32-to-64
conversion when building the 32 bit code for AArch64. Those changes
will be in a separate patch for easier review.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
kvm_vcpu_ioctl() returns -ETHING on error, not ETHING -- correct
an incorrect check in kvm_arch_init_vcpu(). This would not have
had any significant ill-effects -- we would just have propagated
the less useful ENOENT up to the caller rather than the more
accurate EINVAL in the unlikely case that the kernel didn't
have VFP-D32 support.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Use the helper functions to save and restore the FPSCR, so that
we correctly propagate rounding mode and flushing behaviour into
the float_status fields. This also allows us to stop saving the
vector length/stride fields separately.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
A number of CPU state fields were accidentally omitted from
our migration state: some OMAP specific cp15 registers, and
some related to state for load/store exclusive insns. Add them.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Port the ARM CPU save/load code to use VMState. Some state is
saved in a slightly different order to simplify things -- for
example arrays are saved one after the other rather than 'striped',
and we always save all 32 VFP registers even if the CPU happens
to only have 16.
Use one subsection for each feature. This means that we don't need to
bump the version field each time that a new feature gets introduced.
Signed-off-by: Juan Quintela <quintela@redhat.com>
[PMM: fixed conflicts, updated to use cpu_class_set_vmsd(), updated
with new/removed fields since original patch, changed to use custom
VMStateInfo for cpsr rather than presave/postload hooks, corrected
subsection names so vmload doesn't fail]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Since patch
81465888c5
target-arm: factor out handling of SRS instruction
the ARM mode SRS instruction has not worked in QEMU.
The problem is a missing return directive that was removed in the
refactoring, so after decoding the instruction, qemu would fall through
to generate an UNDEF exception for an illegal instruction.
Signed-off-by: Peter Chubb <peter.chubb@nicta.com.au>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The recent rearrangement of include files had some minor errors:
devices.h is not ARM specific and should not be in arm/
arm.h should be in arm/
Move these two headers to correct this.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Many of these should be cleaned up with proper qdev-/QOM-ification.
Right now there are many catch-all headers in include/hw/ARCH depending
on cpu.h, and this makes it necessary to compile these files per-target.
However, fixing this does not belong in these patches.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Enable ARMCPUInfo to specify a custom class_init functions.
Introduce arm_v7m_class_init() and use it for "cortex-m3" model.
Instead of forwarding from arm_cpu_do_interrupt() to do_interrupt_v7m(),
override CPUClass::do_interrupt with arm_v7m_cpu_do_interrupt()
in arm_v7m_class_init().
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This removes a global per-target function and thus takes us one step
closer to compiling multiple targets into one executable.
It will also allow to override the interrupt handling for certain CPU
families.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Move it to qom/cpu.h to avoid issues with include order.
Change pc_acpi_smi_interrupt() opaque to X86CPU.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Both fields are used in VMState, thus need to be moved together.
Explicitly zero them on reset since they were located before
breakpoints.
Pass PowerPCCPU to kvmppc_handle_halt().
Signed-off-by: Andreas Färber <afaerber@suse.de>
When using an in-kernel GIC with KVM, we need to tell the kernel where
the GIC's memory mapped registers live. Do this by registering a
MemoryListener which tracks where the board model maps the A15's
private peripherals, so we can finish the GIC initialisation
when the GIC is actually mapped.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Add support for saving and restoring VFP register state from the
kernel. This includes a check that the KVM-created CPU has full
VFP support (as the TCG Cortex-A15 model always does), since for
the moment ARM QEMU doesn't have any way to tweak optional features
on created CPUs.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Add basic support for KVM on ARM architecture.
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
[PMM: Minor tweaks and code cleanup, switch to ONE_REG]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Drop the CPUARMState* argument from bank_number(), since we only
use it for passing to cpu_abort(). Use hw_error() instead.
This avoids propagating further interfaces using env pointers.
In the long term this function's callers need auditing to fix
problems where badly behaved guests can pass invalid bank numbers.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
M profile cores do not have the RFE or SRS instructions, so
correctly UNDEF these insn patterns on those cores.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Factor out the handling of the SRS instruction rather than
duplicating it between the Thumb and ARM decoders. This in
passing fixes two bugs in the Thumb decoder's SRS handling
which didn't exist in the ARM decoder:
* (LP:1079080) storing CPSR rather than SPSR (fixed in the
ARM decoder in commit c67b6b71 in 2009)
* failing to free the 'addr' TCG temp in the writeback case
Reported-by: Cesson Vincent <vcesson@stmi.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The gen_icount_start/end functions are now somewhat misnamed since they
are useful for generic "start/end of TB" code, used for more than just
icount. Rename them to gen_tb_start/end.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Introduce ENV_OFFSET macros which can be used in non-target-specific
code that needs to generate TCG instructions which reference CPUState
fields given the cpu_env register that TCG targets set up with a
pointer to the CPUArchState struct.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
While T0+~T1+CF = T0-T1+CF-1 is true for the low 32-bits,
it does not produce the correct carry-out to bit 33. Do
exactly what the manual says.
Using the ~T1 makes the add and subtract code paths nearly
identical, so have sbc_CC use adc_CC.
Cc: Peter Maydell <peter.maydell@linaro.org>
Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
commits 49b4c31efc and
2de68a4900 reworked the implementation of adc_CC
and sub_CC. The new implementations (on the TCG_TARGET_HAS_add2_i32 code path)
are incorrect. The new logic is:
CF:NF = 0:A +/- 0:CF
CF:NF = CF:A +/- 0:B
The lower 32 bits of the intermediate result stored in NF needs to be passes
into the second addition in place of A (s/CF:A/CF:NF):
CF:NF = 0:A +/- 0:CF
CF:NF = CF:NF +/- 0:B
This patch fixes the issue.
Cc: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Use sub2 if available, otherwise use 64-bit arithmetic.
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Use add2 if available, otherwise use 64-bit arithmetic.
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
The target-specific ENV_GET_CPU() macros have allowed us to navigate
from CPUArchState to CPUState. The reverse direction was not supported.
Avoid introducing CPU_GET_ENV() macros by initializing an untyped
pointer that is initialized in derived instance_init functions.
The field may not be called "env" due to it being poisoned.
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Turn arm_cpu_realize() into a QOM realize function, no longer called
via cpu.h prototype. To maintain the semantics of cpu_init(), set
realized = true explicitly in cpu_arm_init().
Move GDB coprocessor registration, CPU reset and vCPU initialization
into the realizefn.
Signed-off-by: Andreas Färber <afaerber@suse.de>
In the initial conversion of CPU models to QOM types, model names were
mapped 1:1 to type names. As a side effect this gained us a type "any",
which is now a device.
To avoid "-device any" silliness and to pave the way for compiling
multiple targets into one executable, adopt a <name>-<arch>-cpu scheme.
This leads to names like arm926-arm-cpu but is easiest to handle.
No functional changes for -cpu arguments or -cpu ? output.
Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Fix a leak of a TCG temporary in code paths for VFP system register
writes for cases which UNDEF or are write-ignored.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This fixes -cpu arm-cpu asserting.
Cc: qemu-stable@nongnu.org
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Consolidate model checking into a new arm_cpu_class_by_name().
If the name matches an existing type, also check whether that type is
actually (a sub-type of) TYPE_ARM_CPU.
This fixes, e.g., -cpu tmp105 asserting.
Cc: qemu-stable <qemu-stable@nongnu.org>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Note that target-alpha accesses this field from TCG, now using a
negative offset. Therefore the field is placed last in CPUState.
Pass PowerPCCPU to [kvm]ppc_fixup_cpu() to facilitate this change.
Move common parts of mips cpu_state_reset() to mips_cpu_reset().
Acked-by: Richard Henderson <rth@twiddle.net> (for alpha)
[AF: Rebased onto ppc CPU subclasses and openpic changes]
Signed-off-by: Andreas Färber <afaerber@suse.de>
When do_interrupt_v7m is called with EXCP_SWI, the PC already
points to the next instruction. Don't modify it here.
Signed-off-by: Alex Rozenman <Alex_Rozenman@mentor.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The type_register_static() interface is documented as:
type_register_static:
@info: The #TypeInfo of the new type.
@info and all of the strings it points to should exist for the life
time that the type is registered.
But cpu_register() uses a stack variable for the 'info' argument, so it
has to use type_register() instead of type_register_static().
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This generalizes {ARM,M68k,Alpha}CPUListState to avoid declaring it for
each target. Place it in cpu-common.h to avoid circular dependencies.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
