Commit Graph

448 Commits

Author SHA1 Message Date
Richard Henderson
75fe83564a target/arm: Trap non-streaming usage when Streaming SVE is active
This new behaviour is in the ARM pseudocode function
AArch64.CheckFPAdvSIMDEnabled, which applies to AArch32
via AArch32.CheckAdvSIMDOrFPEnabled when the EL to which
the trap would be delivered is in AArch64 mode.

Given that ARMv9 drops support for AArch32 outside EL0, the trap EL
detection ought to be trivially true, but the pseudocode still contains
a number of conditions, and QEMU has not yet committed to dropping A32
support for EL[12] when v9 features are present.

Since the computation of SME_TRAP_NONSTREAMING is necessarily different
for the two modes, we might as well preserve bits within TBFLAG_ANY and
allocate separate bits within TBFLAG_A32 and TBFLAG_A64 instead.

Note that DDI0616A.a has typos for bits [22:21] of LD1RO in the table
of instructions illegal in streaming mode.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220708151540.18136-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11 13:19:35 +01:00
Peter Maydell
f94a6df5dd target/arm: Correctly implement Feat_DoubleLock
The architecture defines the OS DoubleLock as a register which
(similarly to the OS Lock) suppresses debug events for use in CPU
powerdown sequences.  This functionality is required in Arm v7 and
v8.0; from v8.2 it becomes optional and in v9 it must not be
implemented.

Currently in QEMU we implement the OSDLR_EL1 register as a NOP.  This
is wrong both for the "feature implemented" and the "feature not
implemented" cases: if the feature is implemented then the DLK bit
should read as written and cause suppression of debug exceptions, and
if it is not implemented then the bit must be RAZ/WI.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-07 11:38:36 +01:00
Peter Maydell
09754ca867 target/arm: Implement AArch32 DBGDEVID, DBGDEVID1, DBGDEVID2
Starting with v7 of the debug architecture, there are three extra
ID registers that add information on top of that provided in
DBGDIDR. These are DBGDEVID, DBGDEVID1 and DBGDEVID2. In the
v7 debug architecture, DBGDEVID is optional, present only of
DBGDIDR.DEVID_imp is set. In v7.1 all three must be present.

Implement the missing registers.  Note that we only need to set the
values in the ARMISARegisters struct for the CPUs Cortex-A7, A15,
A53, A57 and A72 (plus the 32-bit 'max' which uses the Cortex-A53
values): earlier CPUs didn't implement v7 of the architecture, and
our other 64-bit CPUs (Cortex-A76, Neoverse-N1 and A64fx) don't have
AArch32 support at EL1.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220630194116.3438513-5-peter.maydell@linaro.org
2022-07-07 11:37:33 +01:00
Richard Henderson
5d7953adcf target/arm: Add SVL to TB flags
We need SVL separate from VL for RDSVL et al, as well as
ZA storage loads and stores, which do not require PSTATE.SM.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220620175235.60881-20-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-27 11:18:17 +01:00
Richard Henderson
6ca54aa9a8 target/arm: Introduce sve_vqm1_for_el_sm
When Streaming SVE mode is enabled, the size is taken from
SMCR_ELx instead of ZCR_ELx.  The format is shared, but the
set of vector lengths is not.  Further, Streaming SVE does
not require any particular length to be supported.

Adjust sve_vqm1_for_el to pass the current value of PSTATE.SM
to the new function.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220620175235.60881-19-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-27 11:18:17 +01:00
Richard Henderson
e74c097638 target/arm: Add cpu properties for SME
Mirror the properties for SVE.  The main difference is
that any arbitrary set of powers of 2 may be supported,
and not the stricter constraints that apply to SVE.

Include a property to control FEAT_SME_FA64, as failing
to restrict the runtime to the proper subset of insns
could be a major point for bugs.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20220620175235.60881-18-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-27 11:18:17 +01:00
Richard Henderson
70cc9ee19e target/arm: Unexport aarch64_add_*_properties
These functions are not used outside cpu64.c,
so make them static.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220620175235.60881-17-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-27 11:18:17 +01:00
Richard Henderson
073011612b target/arm: Move arm_cpu_*_finalize to internals.h
Drop the aa32-only inline fallbacks,
and just use a couple of ifdefs.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220620175235.60881-16-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-27 11:18:17 +01:00
Richard Henderson
7f9e25a6e4 target/arm: Create ARMVQMap
Pull the three sve_vq_* values into a structure.
This will be reused for SME.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220620175235.60881-13-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-27 11:18:17 +01:00
Richard Henderson
f84734b874 target/arm: Implement SMSTART, SMSTOP
These two instructions are aliases of MSR (immediate).
Use the two helpers to properly implement svcr_write.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220620175235.60881-11-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-27 11:18:17 +01:00
Richard Henderson
dc993a01a7 target/arm: Add the SME ZA storage to CPUARMState
Place this late in the resettable section of the structure,
to keep the most common element offsets from being > 64k.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220620175235.60881-10-richard.henderson@linaro.org
[PMM: expanded comment on zarray[] format]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-27 11:18:17 +01:00
Richard Henderson
a3637e8882 target/arm: Add PSTATE.{SM,ZA} to TB flags
These are required to determine if various insns
are allowed to issue.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220620175235.60881-9-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-27 11:18:17 +01:00
Richard Henderson
de5619887c target/arm: Add SMCR_ELx
These cpregs control the streaming vector length and whether the
full a64 instruction set is allowed while in streaming mode.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220620175235.60881-7-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-27 11:18:17 +01:00
Richard Henderson
c37e6ac9eb target/arm: Add SVCR
This cpreg is used to access two new bits of PSTATE
that are not visible via any other mechanism.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220620175235.60881-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-27 11:18:17 +01:00
Richard Henderson
6b2ca83e4c target/arm: Add SMEEXC_EL to TB flags
This is CheckSMEAccess, which is the basis for a set of
related tests for various SME cpregs and instructions.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220620175235.60881-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-27 11:18:17 +01:00
Richard Henderson
9e5ec745e3 target/arm: Implement TPIDR2_EL0
This register is part of SME, but isn't closely related to the
rest of the extension.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220620175235.60881-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-27 11:18:17 +01:00
Richard Henderson
6bcbb07af6 target/arm: SCR_EL3.RW is RAO/WI without AArch32 EL[12]
Since DDI0487F.a, the RW bit is RAO/WI.  When specifically
targeting such a cpu, e.g. cortex-a76, it is legitimate to
ignore the bit within the secure monitor.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1062
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220609214657.1217913-3-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-10 14:32:35 +01:00
Richard Henderson
38e8a13c11 target/arm: Move arm_debug_target_el to debug_helper.c
This function is no longer used outside debug_helper.c.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220609202901.1177572-23-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-10 14:32:35 +01:00
Richard Henderson
8480e933ed target/arm: Remove TBFLAG_ANY.DEBUG_TARGET_EL
We no longer need this value during translation,
as it is now handled within the helpers.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220609202901.1177572-15-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-10 14:32:33 +01:00
Richard Henderson
31c8df53ee target/arm: Move arm_generate_debug_exceptions out of line
Move arm_generate_debug_exceptions and its two subroutines,
{aa32,aa64}_generate_debug_exceptions into debug_helper.c,
and the one interface declaration to internals.h.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220609202901.1177572-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-10 14:32:31 +01:00
Richard Henderson
55ba15b737 target/arm: Move arm_singlestep_active out of line
Move the function to debug_helper.c, and the
declaration to internals.h.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220609202901.1177572-5-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-10 14:32:30 +01:00
Richard Henderson
414c54d515 target/arm: Add ID_AA64SMFR0_EL1
This register is allocated from the existing block of id registers,
so it is already RES0 for cpus that do not implement SME.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220607203306.657998-21-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-08 19:38:59 +01:00
Richard Henderson
f305bf9436 target/arm: Add isar_feature_aa64_sme
This will be used for implementing FEAT_SME.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220607203306.657998-20-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-08 19:38:59 +01:00
Richard Henderson
5ef3cc5636 target/arm: Rename sve_zcr_len_for_el to sve_vqm1_for_el
This will be used for both Normal and Streaming SVE, and the value
does not necessarily come from ZCR_ELx.  While we're at it, emphasize
the units in which the value is returned.

Patch produced by
    git grep -l sve_zcr_len_for_el | \
    xargs -n1 sed -i 's/sve_zcr_len_for_el/sve_vqm1_for_el/g'

and then adding a function comment.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220607203306.657998-13-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-08 19:38:57 +01:00
Richard Henderson
886902ece7 target/arm: Use uint32_t instead of bitmap for sve vq's
The bitmap need only hold 15 bits; bitmap is over-complicated.
We can simplify operations quite a bit with plain logical ops.

The introduction of SVE_VQ_POW2_MAP eliminates the need for
looping in order to search for powers of two.  Simply perform
the logical ops and use count leading or trailing zeros as
required to find the result.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220607203306.657998-12-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-08 19:38:57 +01:00
Richard Henderson
8b599e5c02 linux-user/aarch64: Introduce sve_vq
Add an interface function to extract the digested vector length
rather than the raw zcr_el[1] value.  This fixes an incorrect
return from do_prctl_set_vl where we didn't take into account
the set of vector lengths supported by the cpu.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220607203306.657998-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-08 19:38:55 +01:00
Richard Henderson
f45ce4c35f target/arm: Rename TBFLAG_A64 ZCR_LEN to VL
With SME, the vector length does not only come from ZCR_ELx.
Comment that this is either NVL or SVL, like the pseudocode.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220607203306.657998-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-08 19:38:54 +01:00
Peter Maydell
7ac610206a target/arm: Implement FEAT_DoubleFault
The FEAT_DoubleFault extension adds the following:

 * All external aborts on instruction fetches and translation table
   walks for instruction fetches must be synchronous.  For QEMU this
   is already true.

 * SCR_EL3 has a new bit NMEA which disables the masking of SError
   interrupts by PSTATE.A when the SError interrupt is taken to EL3.
   For QEMU we only need to make the bit writable, because we have no
   sources of SError interrupts.

 * SCR_EL3 has a new bit EASE which causes synchronous external
   aborts taken to EL3 to be taken at the same entry point as SError.
   (Note that this does not mean that they are SErrors for purposes
   of PSTATE.A masking or that the syndrome register reports them as
   SErrors: it just means that the vector offset is different.)

 * The existing SCTLR_EL3.IESB has an effective value of 1 when
   SCR_EL3.NMEA is 1.  For QEMU this is a no-op because we don't need
   different behaviour based on IESB (we don't need to do anything to
   ensure that error exceptions are synchronized).

So for QEMU the things we need to change are:
 * Make SCR_EL3.{NMEA,EASE} writable
 * When taking a synchronous external abort at EL3, adjust the
   vector entry point if SCR_EL3.EASE is set
 * Advertise the feature in the ID registers

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220531151431.949322-1-peter.maydell@linaro.org
2022-06-08 19:38:46 +01:00
Richard Henderson
fab8ad39fb target/arm: Use FIELD definitions for CPACR, CPTR_ELx
We had a few CPTR_* bits defined, but missed quite a few.
Complete all of the fields up to ARMv9.2.
Use FIELD_EX64 instead of manual extract32.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220517054850.177016-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-05-19 18:34:10 +01:00
Richard Henderson
5814d587fe target/arm: Enable FEAT_HCX for -cpu max
This feature adds a new register, HCRX_EL2, which controls
many of the newer AArch64 features.  So far the register is
effectively RES0, because none of the new features are done.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220517054850.177016-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-05-19 16:19:03 +01:00
Peter Maydell
24526bb92f target/arm: Make number of counters in PMCR follow the CPU
Currently we give all the v7-and-up CPUs a PMU with 4 counters.  This
means that we don't provide the 6 counters that are required by the
Arm BSA (Base System Architecture) specification if the CPU supports
the Virtualization extensions.

Instead of having a single PMCR_NUM_COUNTERS, make each CPU type
specify the PMCR reset value (obtained from the appropriate TRM), and
use the 'N' field of that value to define the number of counters
provided.

This means that we now supply 6 counters instead of 4 for:
 Cortex-A9, Cortex-A15, Cortex-A53, Cortex-A57, Cortex-A72,
 Cortex-A76, Neoverse-N1, '-cpu max'
This CPU goes from 4 to 8 counters:
 A64FX
These CPUs remain with 4 counters:
 Cortex-A7, Cortex-A8
This CPU goes down from 4 to 3 counters:
 Cortex-R5

Note that because we now use the PMCR reset value of the specific
implementation, we no longer set the LC bit out of reset.  This has
an UNKNOWN value out of reset for all cores with any AArch32 support,
so guest software should be setting it anyway if it wants it.

This change was originally landed in commit f7fb73b8cd (during
the 6.0 release cycle) but was then reverted by commit
21c2dd77a6 before that release because it did not work with KVM.
This version fixes that by creating the scratch vCPU in
kvm_arm_get_host_cpu_features() with the KVM_ARM_VCPU_PMU_V3 feature
if KVM supports it, and then only asking KVM for the PMCR_EL0 value
if the vCPU has a PMU.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[PMM: Added the correct value for a64fx]
Message-id: 20220513122852.4063586-1-peter.maydell@linaro.org
2022-05-19 16:19:02 +01:00
Peter Maydell
39f29e5993 hw/intc/arm_gicv3: Use correct number of priority bits for the CPU
Make the GICv3 set its number of bits of physical priority from the
implementation-specific value provided in the CPU state struct, in
the same way we already do for virtual priority bits.  Because this
would be a migration compatibility break, we provide a property
force-8-bit-prio which is enabled for 7.0 and earlier versioned board
models to retain the legacy "always use 8 bits" behaviour.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220512151457.3899052-6-peter.maydell@linaro.org
Message-id: 20220506162129.2896966-5-peter.maydell@linaro.org
2022-05-19 16:19:02 +01:00
Peter Maydell
75662f36e3 target/arm: Implement FEAT_IDST
The Armv8.4 feature FEAT_IDST specifies that exceptions generated by
read accesses to the feature ID space should report a syndrome code
of 0x18 (EC_SYSTEMREGISTERTRAP) rather than 0x00 (EC_UNCATEGORIZED).
The feature ID space is defined to be:
 op0 == 3, op1 == {0,1,3}, CRn == 0, CRm == {0-7}, op2 == {0-7}

In our implementation we might return the EC_UNCATEGORIZED syndrome
value for a system register access in four cases:
 * no reginfo struct in the hashtable
 * cp_access_ok() fails (ie ri->access doesn't permit the access)
 * ri->accessfn returns CP_ACCESS_TRAP_UNCATEGORIZED at runtime
 * ri->type includes ARM_CP_RAISES_EXC, and the readfn raises
   an UNDEF exception at runtime

We have very few regdefs that set ARM_CP_RAISES_EXC, and none of
them are in the feature ID space. (In the unlikely event that any
are added in future they would need to take care of setting the
correct syndrome themselves.) This patch deals with the other
three cases, and enables FEAT_IDST for AArch64 -cpu max.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220509155457.3560724-1-peter.maydell@linaro.org
2022-05-19 16:19:02 +01:00
Peter Maydell
8c7e17ef38 target/arm: Implement FEAT_S2FWB
Implement the handling of FEAT_S2FWB; the meat of this is in the new
combined_attrs_fwb() function which combines S1 and S2 attributes
when HCR_EL2.FWB is set.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220505183950.2781801-4-peter.maydell@linaro.org
2022-05-19 16:19:02 +01:00
Richard Henderson
7cb1e61851 target/arm: Enable FEAT_CSV2_2 for -cpu max
There is no branch prediction in TCG, therefore there is no
need to actually include the context number into the predictor.
Therefore all we need to do is add the state for SCXTNUM_ELx.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220506180242.216785-21-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-05-09 11:47:54 +01:00
Richard Henderson
3c29632feb target/arm: Implement virtual SError exceptions
Virtual SError exceptions are raised by setting HCR_EL2.VSE,
and are routed to EL1 just like other virtual exceptions.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220506180242.216785-16-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-05-09 11:47:54 +01:00
Richard Henderson
58e93b48aa target/arm: Add minimal RAS registers
Add only the system registers required to implement zero error
records.  This means that all values for ERRSELR are out of range,
which means that it and all of the indexed error record registers
need not be implemented.

Add the EL2 registers required for injecting virtual SError.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220506180242.216785-14-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-05-09 11:47:53 +01:00
Richard Henderson
25e168ab70 target/arm: Add isar_feature_{aa64,any}_ras
Add the aa64 predicate for detecting RAS support from id registers.
We already have the aa32 version from the M-profile work.
Add the 'any' predicate for testing both aa64 and aa32.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220501055028.646596-34-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-05-05 09:35:52 +01:00
Richard Henderson
ca56aac59f target/arm: Add isar predicates for FEAT_Debugv8p2
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220501055028.646596-24-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-05-05 09:35:52 +01:00
Richard Henderson
cf7c6d1004 target/arm: Split out cpregs.h
Move ARMCPRegInfo and all related declarations to a new
internal header, out of the public cpu.h.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220501055028.646596-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-05-05 09:35:50 +01:00
Richard Henderson
a4c88675d6 target/arm: Remove fpexc32_access
This function is incorrect in that it does not properly consider
CPTR_EL2.FPEN.  We've already got another mechanism for raising
an FPU access trap: ARM_CP_FPU, so use that instead.

Remove CP_ACCESS_TRAP_FP_EL{2,3}, which becomes unused.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-04-22 14:44:54 +01:00
Richard Henderson
063bbd8061 target/arm: Change CPUArchState.thumb to bool
Bool is a more appropriate type for this value.
Adjust the assignments to use true/false.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-04-22 14:44:54 +01:00
Richard Henderson
5322155240 target/arm: Change CPUArchState.aarch64 to bool
Bool is a more appropriate type for this value.
Adjust the assignments to use true/false.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-04-22 14:44:54 +01:00
Richard Henderson
ad1e60184c target/arm: Update SCTLR bits to ARMv9.2
Update SCTLR_ELx fields per ARM DDI0487 H.a.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-04-22 14:44:54 +01:00
Richard Henderson
f527d66183 target/arm: Update SCR_EL3 bits to ARMv8.8
Update SCR_EL3 fields per ARM DDI0487 H.a.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-04-22 14:44:53 +01:00
Richard Henderson
c42fb26b13 target/arm: Update ISAR fields for ARMv8.8
Update isar fields per ARM DDI0487 H.a.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-04-22 14:44:53 +01:00
Marc-André Lureau
69242e7e7e Move CPU softfloat unions to cpu-float.h
The types are no longer used in bswap.h since commit
f930224fff ("bswap.h: Remove unused float-access functions"), there
isn't much sense in keeping it there and having a dependency on fpu/.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220323155743.1585078-29-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-06 14:31:43 +02:00
Marc-André Lureau
ee3eb3a7ce Replace TARGET_WORDS_BIGENDIAN
Convert the TARGET_WORDS_BIGENDIAN macro, similarly to what was done
with HOST_BIG_ENDIAN. The new TARGET_BIG_ENDIAN macro is either 0 or 1,
and thus should always be defined to prevent misuse.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Suggested-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323155743.1585078-8-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-06 10:50:37 +02:00
Marc-André Lureau
e03b56863d Replace config-time define HOST_WORDS_BIGENDIAN
Replace a config-time define with a compile time condition
define (compatible with clang and gcc) that must be declared prior to
its usage. This avoids having a global configure time define, but also
prevents from bad usage, if the config header wasn't included before.

This can help to make some code independent from qemu too.

gcc supports __BYTE_ORDER__ from about 4.6 and clang from 3.2.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
[ For the s390x parts I'm involved in ]
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323155743.1585078-7-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-06 10:50:37 +02:00
Edgar E. Iglesias
4a7319b750 target/arm: Make rvbar settable after realize
Make the rvbar property settable after realize. This is done
in preparation to model the ZynqMP's runtime configurable rvbar.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 20220316164645.2303510-3-edgar.iglesias@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-03-18 11:19:19 +00:00