Commit Graph

6080 Commits

Author SHA1 Message Date
Giuseppe Musacchio
91699dbf30 ppc/translate: Raise exceptions after setting the cc
The PowerISA reference states that the comparison operators update the
FPCC, CR and FPSCR and, if VE=1, jump to the exception handler.

Moving the exception-triggering code after the CC update sequence solves
the problem.

Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201112230130.65262-5-thatlemon@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-12-14 15:53:59 +11:00
Giuseppe Musacchio
bc92c260f6 ppc/translate: Delay NaN checking after comparison
Since we always perform a comparison between the two operands avoid
checking for NaN unless the result states they're unordered.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201112230130.65262-4-thatlemon@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-12-14 15:53:52 +11:00
Giuseppe Musacchio
132954a830 ppc/translate: Turn the helper macros into functions
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201112230130.65262-3-thatlemon@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-12-14 15:53:41 +11:00
Giuseppe Musacchio
3278aa49d5 ppc/translate: Fix unordered f64/f128 comparisons
According to the PowerISA v3.1 reference, Table 68 "Actions for xscmpudp
- Part 1: Compare Unordered", whenever one of the two operands is a NaN
the SO bit is set while the other three bits are cleared.

Apply the same change to xscmpuqp.

The respective ordered counterparts are unaffected.

Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com>
Message-Id: <20201112230130.65262-2-thatlemon@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-12-14 15:53:26 +11:00
Chen Qun
cf77e27f1e target/ppc: replaced the TODO with LOG_UNIMP and add break for silence warnings
When using -Wimplicit-fallthrough in our CFLAGS, the compiler showed warning:
target/ppc/mmu_helper.c: In function ‘dump_mmu’:
target/ppc/mmu_helper.c:1351:12: warning: this statement may fall through [-Wimplicit-fallthrough=]
 1351 |         if (ppc64_v3_radix(env_archcpu(env))) {
      |            ^
target/ppc/mmu_helper.c:1358:5: note: here
 1358 |     default:
      |     ^~~~~~~

Use "qemu_log_mask(LOG_UNIMP**)" instead of the TODO comment.
And add the break statement to fix it.

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20201116024810.2415819-8-kuhn.chenqun@huawei.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-12-14 15:50:55 +11:00
zhaolichang
ce00ff729e m68k: fix some comment spelling errors
I found that there are many spelling errors in the comments of qemu/target/m68k.
I used spellcheck to check the spelling errors and found some errors in the folder.

Signed-off-by: zhaolichang <zhaolichang@huawei.com>
Reviewed-by: David Edmondson <david.edmondson@oracle.com>
Reviewed-by: Philippe Mathieu-Daude<f4bug@amsat.org>
Reviewed-by: Laurent Vivier<laurent@vivier.eu>
Message-Id: <20201009064449.2336-9-zhaolichang@huawei.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-12-12 18:12:43 +01:00
Laurent Vivier
d21f73c61d target/m68k: Add vmstate definition for M68kCPU
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20201022203000.1922749-3-laurent@vivier.eu>
2020-12-12 18:12:39 +01:00
Laurent Vivier
4160d5e6bd target/m68k: remove useless qregs array
They are unused since the target has been converted to TCG.

Fixes: e1f3808e03 ("Convert m68k target to TCG.")
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20201022203000.1922749-2-laurent@vivier.eu>
2020-12-12 18:12:35 +01:00
Peter Maydell
a4b307b0ea First set of 6.0 patches for s390x:
- acceptance test for device detection
 - bugfixes
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Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20201211' into staging

First set of 6.0 patches for s390x:
- acceptance test for device detection
- bugfixes

# gpg: Signature made Fri 11 Dec 2020 12:21:45 GMT
# gpg:                using RSA key C3D0D66DC3624FF6A8C018CEDECF6B93C6F02FAF
# gpg:                issuer "cohuck@redhat.com"
# gpg: Good signature from "Cornelia Huck <conny@cornelia-huck.de>" [unknown]
# gpg:                 aka "Cornelia Huck <huckc@linux.vnet.ibm.com>" [full]
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>" [full]
# gpg:                 aka "Cornelia Huck <cohuck@kernel.org>" [unknown]
# gpg:                 aka "Cornelia Huck <cohuck@redhat.com>" [unknown]
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck/tags/s390x-20201211:
  s390x/cpu: Use timer_free() in the finalize function to avoid memleaks
  tests/acceptance: test s390x zpci fid propagation
  tests/acceptance: verify s390x device detection
  tests/acceptance: test virtio-ccw revision handling
  tests/acceptance: add a test for devices on s390x
  hw/watchdog/wdt_diag288: Remove unnecessary includes

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-12-11 22:22:50 +00:00
Peter Maydell
b785d25e91 * Fix for NULL segments (Bin Meng)
* Support for 32768 CPUs on x86 without IOMMU (David)
 * PDEP/PEXT fix and testcase (myself)
 * Remove bios_name and ram_size globals (myself)
 * qemu_init rationalization (myself)
 * Update kernel-doc (myself + upstream patches)
 * Propagate MemTxResult across DMA and PCI functions (Philippe)
 * Remove master/slave when applicable (Philippe)
 * WHPX support for in-kernel irqchip (Sunil)
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Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging

* Fix for NULL segments (Bin Meng)
* Support for 32768 CPUs on x86 without IOMMU (David)
* PDEP/PEXT fix and testcase (myself)
* Remove bios_name and ram_size globals (myself)
* qemu_init rationalization (myself)
* Update kernel-doc (myself + upstream patches)
* Propagate MemTxResult across DMA and PCI functions (Philippe)
* Remove master/slave when applicable (Philippe)
* WHPX support for in-kernel irqchip (Sunil)

# gpg: Signature made Thu 10 Dec 2020 17:21:50 GMT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini-gitlab/tags/for-upstream: (113 commits)
  scripts: kernel-doc: remove unnecessary change wrt Linux
  Revert "docs: temporarily disable the kernel-doc extension"
  scripts: kernel-doc: use :c:union when needed
  scripts: kernel-doc: split typedef complex regex
  scripts: kernel-doc: fix typedef parsing
  Revert "kernel-doc: Handle function typedefs that return pointers"
  Revert "kernel-doc: Handle function typedefs without asterisks"
  scripts: kernel-doc: try to use c:function if possible
  scripts: kernel-doc: fix line number handling
  scripts: kernel-doc: allow passing desired Sphinx C domain dialect
  scripts: kernel-doc: don't mangle with parameter list
  scripts: kernel-doc: fix typedef identification
  scripts: kernel-doc: reimplement -nofunction argument
  scripts: kernel-doc: fix troubles with line counts
  scripts: kernel-doc: use a less pedantic markup for funcs on Sphinx 3.x
  scripts: kernel-doc: make it more compatible with Sphinx 3.x
  Revert "kernel-doc: Use c:struct for Sphinx 3.0 and later"
  Revert "scripts/kerneldoc: For Sphinx 3 use c:macro for macros with arguments"
  scripts: kernel-doc: add support for typedef enum
  kernel-doc: add support for ____cacheline_aligned attribute
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-12-11 13:50:35 +00:00
Gan Qixin
c7454f0517 s390x/cpu: Use timer_free() in the finalize function to avoid memleaks
When running device-introspect-test, a memory leak occurred in the s390_cpu_initfn
function, this patch use timer_free() in the finalize function to fix it.

ASAN shows memory leak stack:

Direct leak of 3552 byte(s) in 74 object(s) allocated from:
    #0 0xfffeb3d4e1f0 in __interceptor_calloc (/lib64/libasan.so.5+0xee1f0)
    #1 0xfffeb36e6800 in g_malloc0 (/lib64/libglib-2.0.so.0+0x56800)
    #2 0xaaad51a8f9c4 in timer_new_full qemu/include/qemu/timer.h:523
    #3 0xaaad51a8f9c4 in timer_new qemu/include/qemu/timer.h:544
    #4 0xaaad51a8f9c4 in timer_new_ns qemu/include/qemu/timer.h:562
    #5 0xaaad51a8f9c4 in s390_cpu_initfn qemu/target/s390x/cpu.c:304
    #6 0xaaad51e00f58 in object_init_with_type qemu/qom/object.c:371
    #7 0xaaad51e0406c in object_initialize_with_type qemu/qom/object.c:515
    #8 0xaaad51e042e0 in object_new_with_type qemu/qom/object.c:729
    #9 0xaaad51e3ff40 in qmp_device_list_properties qemu/qom/qom-qmp-cmds.c:153
    #10 0xaaad51910518 in qdev_device_help qemu/softmmu/qdev-monitor.c:283
    #11 0xaaad51911918 in qmp_device_add qemu/softmmu/qdev-monitor.c:801
    #12 0xaaad51911e48 in hmp_device_add qemu/softmmu/qdev-monitor.c:916

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Gan Qixin <ganqixin@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20201204081209.360524-4-ganqixin@huawei.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2020-12-11 11:38:10 +01:00
Luwei Kang
d1615ea575 i386/cpu: Make the Intel PT LIP feature configurable
The current implementation will disable the guest Intel PT feature
if the Intel PT LIP feature is supported on the host, but the LIP
feature is comming soon(e.g. SnowRidge and later).

This patch will make the guest LIP feature configurable and Intel
PT feature can be enabled in guest when the guest LIP status same
with the host.

Signed-off-by: Luwei Kang <luwei.kang@intel.com>
Message-Id: <20201202101042.11967-1-luwei.kang@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-12-10 17:33:23 -05:00
Tobin Feldman-Fitzthum
c7f7e6970d sev: add sev-inject-launch-secret
AMD SEV allows a guest owner to inject a secret blob
into the memory of a virtual machine. The secret is
encrypted with the SEV Transport Encryption Key and
integrity is guaranteed with the Transport Integrity
Key. Although QEMU facilitates the injection of the
launch secret, it cannot access the secret.

Signed-off-by: Tobin Feldman-Fitzthum <tobin@linux.ibm.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
Message-Id: <20201027170303.47550-1-tobin@linux.ibm.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-12-10 17:33:17 -05:00
Paolo Bonzini
382a04afa0 s390x: do not use ram_size global
Use the machine properties instead.

Cc: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-12-10 12:15:09 -05:00
Paolo Bonzini
5601d24164 m68k: do not use ram_size global
Use the machine properties instead.

Cc: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-12-10 12:15:08 -05:00
Paolo Bonzini
6e504a989d arm: do not use ram_size global
Use the machine properties instead.

Cc: qemu-ppc@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-12-10 12:15:07 -05:00
Sunil Muthuswamy
faf20793b5 WHPX: support for the kernel-irqchip on/off
This patch adds support the kernel-irqchip option for
WHPX with on or off value. 'split' value is not supported
for the option. The option only works for the latest version
of Windows (ones that are coming out on Insiders). The
change maintains backward compatibility on older version of
Windows where this option is not supported.

Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Message-Id: <SN4PR2101MB0880B13258DA9251F8459F4DC0170@SN4PR2101MB0880.namprd21.prod.outlook.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-12-10 12:15:01 -05:00
Bin Meng
c2ba0515f2 target/i386: seg_helper: Correct segment selector nullification in the RET/IRET helper
Per the SDM, when returning to outer privilege level, for segment
registers (ES, FS, GS, and DS) if the check fails, the segment
selector becomes null, but QEMU clears the base/limit/flags as well
as nullifying the segment selector, which should be a spec violation.

Real hardware seems to be compliant with the spec, at least on one
Coffee Lake board I tested.

Signed-off-by: Bin Meng <bin.meng@windriver.com>

Message-Id: <1605261378-77971-1-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-12-10 12:15:00 -05:00
David Woodhouse
c1bb5418e3 target/i386: Support up to 32768 CPUs without IRQ remapping
The IOAPIC has an 'Extended Destination ID' field in its RTE, which maps
to bits 11-4 of the MSI address. Since those address bits fall within a
given 4KiB page they were historically non-trivial to use on real hardware.

The Intel IOMMU uses the lowest bit to indicate a remappable format MSI,
and then the remaining 7 bits are part of the index.

Where the remappable format bit isn't set, we can actually use the other
seven to allow external (IOAPIC and MSI) interrupts to reach up to 32768
CPUs instead of just the 255 permitted on bare metal.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <78097f9218300e63e751e077a0a5ca029b56ba46.camel@infradead.org>
[Fix UBSAN warning. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2020-12-10 12:15:00 -05:00
Paolo Bonzini
75b208c283 target/i386: fix operand order for PDEP and PEXT
For PDEP and PEXT, the mask is provided in the memory (mod+r/m)
operand, and therefore is loaded in s->T0 by gen_ldst_modrm.
The source is provided in the second source operand (VEX.vvvv)
and therefore is loaded in s->T1.  Fix the order in which
they are passed to the helpers.

Reported-by: Lenard Szolnoki <blog@lenardszolnoki.com>
Analyzed-by: Lenard Szolnoki <blog@lenardszolnoki.com>
Fixes: https://bugs.launchpad.net/qemu/+bug/1605123
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-12-10 12:14:49 -05:00
Peter Maydell
46f4976f22 target/arm: Implement M-profile "minimal RAS implementation"
For v8.1M the architecture mandates that CPUs must provide at
least the "minimal RAS implementation" from the Reliability,
Availability and Serviceability extension. This consists of:
 * an ESB instruction which is a NOP
   -- since it is in the HINT space we need only add a comment
 * an RFSR register which will RAZ/WI
 * a RAZ/WI AIRCR.IESB bit
   -- the code which handles writes to AIRCR does not allow setting
      of RES0 bits, so we already treat this as RAZ/WI; add a comment
      noting that this is deliberate
 * minimal implementation of the RAS register block at 0xe0005000
   -- this will be in a subsequent commit
 * setting the ID_PFR0.RAS field to 0b0010
   -- we will do this when we add the Cortex-M55 CPU model

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-26-peter.maydell@linaro.org
2020-12-10 11:44:56 +00:00
Peter Maydell
7f48414736 target/arm: Implement CCR_S.TRD behaviour for SG insns
v8.1M introduces a new TRD flag in the CCR register, which enables
checking for stack frame integrity signatures on SG instructions.
Add the code in the SG insn implementation for the new behaviour.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-24-peter.maydell@linaro.org
2020-12-10 11:44:56 +00:00
Peter Maydell
0e83f905fb hw/intc/armv7m_nvic: Support v8.1M CCR.TRD bit
v8.1M introduces a new TRD flag in the CCR register, which enables
checking for stack frame integrity signatures on SG instructions.
This bit is not banked, and is always RAZ/WI to Non-secure code.
Adjust the code for handling CCR reads and writes to handle this.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-23-peter.maydell@linaro.org
2020-12-10 11:44:56 +00:00
Peter Maydell
fe6fa228a7 target/arm: Implement new v8.1M VLLDM and VLSTM encodings
v8.1M adds new encodings of VLLDM and VLSTM (where bit 7 is set).
The only difference is that:
 * the old T1 encodings UNDEF if the implementation implements 32
   Dregs (this is currently architecturally impossible for M-profile)
 * the new T2 encodings have the implementation-defined option to
   read from memory (discarding the data) or write UNKNOWN values to
   memory for the stack slots that would be D16-D31

We choose not to make those accesses, so for us the two
instructions behave identically assuming they don't UNDEF.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-21-peter.maydell@linaro.org
2020-12-10 11:44:56 +00:00
Peter Maydell
3423fbf104 target/arm: Implement new v8.1M NOCP check for exception return
In v8.1M a new exception return check is added which may cause a NOCP
UsageFault (see rule R_XLTP): before we clear s0..s15 and the FPSCR
we must check whether access to CP10 from the Security state of the
returning exception is disabled; if it is then we must take a fault.

(Note that for our implementation CPPWR is always RAZ/WI and so can
never cause CP10 accesses to fail.)

The other v8.1M change to this register-clearing code is that if MVE
is implemented VPR must also be cleared, so add a TODO comment to
that effect.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-20-peter.maydell@linaro.org
2020-12-10 11:44:56 +00:00
Peter Maydell
be9500bb17 target/arm: In v8.1M, don't set HFSR.FORCED on vector table fetch failures
In v8.1M, vector table fetch failures don't set HFSR.FORCED (see rule
R_LLRP).  (In previous versions of the architecture this was either
required or IMPDEF.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-18-peter.maydell@linaro.org
2020-12-10 11:44:56 +00:00
Peter Maydell
a59b1ed618 target/arm: For v8.1M, always clear R0-R3, R12, APSR, EPSR on exception entry
In v8.0M, on exception entry the registers R0-R3, R12, APSR and EPSR
are zeroed for an exception taken to Non-secure state; for an
exception taken to Secure state they become UNKNOWN, and we chose to
leave them at their previous values.

In v8.1M the behaviour is specified more tightly and these registers
are always zeroed regardless of the security state that the exception
targets (see rule R_KPZV).  Implement this.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-17-peter.maydell@linaro.org
2020-12-10 11:44:55 +00:00
Peter Maydell
99c7834fba hw/intc/armv7m_nvic: Update FPDSCR masking for v8.1M
The FPDSCR register has a similar layout to the FPSCR.  In v8.1M it
gains new fields FZ16 (if half-precision floating point is supported)
and LTPSIZE (always reads as 4).  Update the reset value and the code
that handles writes to this register accordingly.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-16-peter.maydell@linaro.org
2020-12-10 11:44:55 +00:00
Peter Maydell
64f863baee target/arm: Implement FPCXT_S fp system register
Implement the new-in-v8.1M FPCXT_S floating point system register.
This is for saving and restoring the secure floating point context,
and it reads and writes bits [27:0] from the FPSCR and the
CONTROL.SFPA bit in bit [31].

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-14-peter.maydell@linaro.org
2020-12-10 11:44:55 +00:00
Peter Maydell
96dfae6866 target/arm: Factor out preserve-fp-state from full_vfp_access_check()
Factor out the code which handles M-profile lazy FP state preservation
from full_vfp_access_check(); accesses to the FPCXT_NS register are
a special case which need to do just this part (corresponding in the
pseudocode to the PreserveFPState() function), and not the full
set of actions matching the pseudocode ExecuteFPCheck() which
normal FP instructions need to do.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20201119215617.29887-13-peter.maydell@linaro.org
2020-12-10 11:44:55 +00:00
Peter Maydell
6a017acdf8 target/arm: Use new FPCR_NZCV_MASK constant
We defined a constant name for the mask of NZCV bits in the FPCR/FPSCR
in the previous commit; use it in a couple of places in existing code,
where we're masking out everything except NZCV for the "load to Rt=15
sets CPSR.NZCV" special case.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-12-peter.maydell@linaro.org
2020-12-10 11:44:55 +00:00
Peter Maydell
9542c30bcf target/arm: Implement M-profile FPSCR_nzcvqc
v8.1M defines a new FP system register FPSCR_nzcvqc; this behaves
like the existing FPSCR, except that it reads and writes only bits
[31:27] of the FPSCR (the N, Z, C, V and QC flag bits).  (Unlike the
FPSCR, the special case for Rt=15 of writing the CPSR.NZCV is not
permitted.)

Implement the register.  Since we don't yet implement MVE, we handle
the QC bit as RES0, with todo comments for where we will need to add
support later.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-11-peter.maydell@linaro.org
2020-12-10 11:44:55 +00:00
Peter Maydell
0bf0dd4dcb target/arm: Implement VLDR/VSTR system register
Implement the new-in-v8.1M VLDR/VSTR variants which directly
read or write FP system registers to memory.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-10-peter.maydell@linaro.org
2020-12-10 11:44:55 +00:00
Peter Maydell
f7ed0c9433 target/arm: Move general-use constant expanders up in translate.c
The constant-expander functions like negate, plus_2, etc, are
generally useful; move them up in translate.c so we can use them in
the VFP/Neon decoders as well as in the A32/T32/T16 decoders.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-9-peter.maydell@linaro.org
2020-12-10 11:44:55 +00:00
Peter Maydell
32a290b8c3 target/arm: Refactor M-profile VMSR/VMRS handling
Currently M-profile borrows the A-profile code for VMSR and VMRS
(access to the FP system registers), because all it needs to support
is the FPSCR.  In v8.1M things become significantly more complicated
in two ways:

 * there are several new FP system registers; some have side effects
   on read, and one (FPCXT_NS) needs to avoid the usual
   vfp_access_check() and the "only if FPU implemented" check

 * all sysregs are now accessible both by VMRS/VMSR (which
   reads/writes a general purpose register) and also by VLDR/VSTR
   (which reads/writes them directly to memory)

Refactor the structure of how we handle VMSR/VMRS to cope with this:

 * keep the M-profile code entirely separate from the A-profile code

 * abstract out the "read or write the general purpose register" part
   of the code into a loadfn or storefn function pointer, so we can
   reuse it for VLDR/VSTR.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-8-peter.maydell@linaro.org
2020-12-10 11:44:55 +00:00
Peter Maydell
ede97c9d71 target/arm: Enforce M-profile VMRS/VMSR register restrictions
For M-profile before v8.1M, the only valid register for VMSR/VMRS is
the FPSCR.  We have a comment that states this, but the actual logic
to forbid accesses for any other register value is missing, so we
would end up with A-profile style behaviour.  Add the missing check.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-7-peter.maydell@linaro.org
2020-12-10 11:44:55 +00:00
Peter Maydell
6e21a013fb target/arm: Implement CLRM instruction
In v8.1M the new CLRM instruction allows zeroing an arbitrary set of
the general-purpose registers and APSR.  Implement this.

The encoding is a subset of the LDMIA T2 encoding, using what would
be Rn=0b1111 (which UNDEFs for LDMIA).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-6-peter.maydell@linaro.org
2020-12-10 11:44:55 +00:00
Peter Maydell
83ff3d6add target/arm: Implement VSCCLRM insn
Implement the v8.1M VSCCLRM insn, which zeros floating point
registers if there is an active floating point context.
This requires support in write_neon_element32() for the MO_32
element size, so add it.

Because we want to use arm_gen_condlabel(), we need to move
the definition of that function up in translate.c so it is
before the #include of translate-vfp.c.inc.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-5-peter.maydell@linaro.org
2020-12-10 11:44:55 +00:00
Peter Maydell
4018818840 target/arm: Don't clobber ID_PFR1.Security on M-profile cores
In arm_cpu_realizefn() we check whether the board code disabled EL3
via the has_el3 CPU object property, which we create if the CPU
starts with the ARM_FEATURE_EL3 feature bit.  If it is disabled, then
we turn off ARM_FEATURE_EL3 and also zero out the relevant fields in
the ID_PFR1 and ID_AA64PFR0 registers.

This codepath was incorrectly being taken for M-profile CPUs, which
do not have an EL3 and don't set ARM_FEATURE_EL3, but which may have
the M-profile Security extension and so should have non-zero values
in the ID_PFR1.Security field.

Restrict the handling of the feature flag to A/R-profile cores.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-4-peter.maydell@linaro.org
2020-12-10 11:44:55 +00:00
Peter Maydell
cad8e2e316 target/arm: Implement v8.1M PXN extension
In v8.1M the PXN architecture extension adds a new PXN bit to the
MPU_RLAR registers, which forbids execution of code in the region
from a privileged mode.

This is another feature which is just in the generic "in v8.1M" set
and has no ID register field indicating its presence.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201119215617.29887-3-peter.maydell@linaro.org
2020-12-10 11:44:55 +00:00
LemonBoy
afae37d98a ppc/translate: Implement lxvwsx opcode
Implement the "Load VSX Vector Word & Splat Indexed" opcode, introduced
in Power ISA v3.0.

Buglink: https://bugs.launchpad.net/qemu/+bug/1793608
Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com>
Message-Id: <d7d533e18c2bc10d924ee3e09907ff2b41fddb3a.1604912739.git.thatlemon@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-11-24 11:34:18 +11:00
Peter Maydell
6951595183 target/arm: Make SYS_HEAPINFO work with RAM that doesn't start at 0
The semihosting SYS_HEAPINFO call is supposed to return an array
of four guest addresses:
 * base of heap memory
 * limit of heap memory
 * base of stack memory
 * limit of stack memory

Some semihosting programs (including those compiled to use the
'newlib' embedded C library) use this call to work out where they
should initialize themselves to.

QEMU's implementation when in system emulation mode is very
simplistic: we say that the heap starts halfway into RAM and
continues to the end of RAM, and the stack starts at the top of RAM
and works down to the bottom.  Unfortunately the code assumes that
the base address of RAM is at address 0, so on boards like 'virt'
where this is not true the addresses returned will all be wrong and
the guest application will usually crash.

Conveniently since all Arm boards call arm_load_kernel() we have the
base address of the main RAM block in the arm_boot_info struct which
is accessible via the CPU object.  Use this to return sensible values
from SYS_HEAPINFO.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20201119092346.32356-1-peter.maydell@linaro.org
2020-11-23 11:03:27 +00:00
Rémi Denis-Courmont
98e8779770 target/arm: fix stage 2 page-walks in 32-bit emulation
Using a target unsigned long would limit the Input Address to a LPAE
page-walk to 32 bits on AArch32 and 64 bits on AArch64. This is okay
for stage 1 or on AArch64, but it is insufficient for stage 2 on
AArch32. In that later case, the Input Address can have up to 40 bits.

Signed-off-by: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201118150414.18360-1-remi@remlab.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-11-23 10:41:58 +00:00
Collin Walling
e2c6cd5674 s390/kvm: fix diag318 propagation and reset functionality
The Control Program Name Code (CPNC) portion of the diag318
info must be set within the SIE block of each VCPU in the
configuration. The handler will iterate through each VCPU
and dirty the diag318_info reg to be synced with KVM on a
subsequent sync_regs call.

Additionally, the diag318 info resets must be handled via
userspace. As such, QEMU will reset this value for each
VCPU during a modified clear, load normal, and load clear
reset event.

Fixes: fabdada935 ("s390: guest support for diagnose 0x318")
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Message-Id: <20201113221022.257054-1-walling@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Janosch Frank <frankja@de.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2020-11-18 16:57:48 +01:00
Jessica Clarke
c6a89b45bd hvf: Fix segment selector format
The Requested Privilege Level field is 2 bits, the Table Indicator field
is 1 bit and the Index field is the remaining 15 bits, with TI=0 meaning
GDT and TI=1 meaning LDT.

Signed-off-by: Jessica Clarke <jrtc27@jrtc27.com>
Message-Id: <20201116200414.28286-1-jrtc27@jrtc27.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-11-18 09:32:17 +01:00
Jessica Clarke
65baabca22 hvf: Gate RDTSCP on CPU_BASED2_RDTSCP, not just CPU_BASED_TSC_OFFSET
Buglink: https://bugs.launchpad.net/qemu/+bug/1894836
Signed-off-by: Jessica Clarke <jrtc27@jrtc27.com>
Message-Id: <20201116200319.28138-1-jrtc27@jrtc27.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-11-18 09:31:46 +01:00
Peter Maydell
c446ac37b7 target-arm queue:
* hw/arm/virt: ARM_VIRT must select ARM_GIC
  * exynos: Fix bad printf format specifiers
  * hw/input/ps2.c: Remove remnants of printf debug
  * target/openrisc: Remove dead code attempting to check "is timer disabled"
  * register: Remove unnecessary NULL check
  * util/cutils: Fix Coverity array overrun in freq_to_str()
  * configure: Make "does libgio work" test pull in some actual functions
  * tmp105: reset the T_low and T_High registers
  * tmp105: Correct handling of temperature limit checks
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20201117' into staging

target-arm queue:
 * hw/arm/virt: ARM_VIRT must select ARM_GIC
 * exynos: Fix bad printf format specifiers
 * hw/input/ps2.c: Remove remnants of printf debug
 * target/openrisc: Remove dead code attempting to check "is timer disabled"
 * register: Remove unnecessary NULL check
 * util/cutils: Fix Coverity array overrun in freq_to_str()
 * configure: Make "does libgio work" test pull in some actual functions
 * tmp105: reset the T_low and T_High registers
 * tmp105: Correct handling of temperature limit checks

# gpg: Signature made Tue 17 Nov 2020 13:47:48 GMT
# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20201117:
  tmp105: Correct handling of temperature limit checks
  hw/misc/tmp105: reset the T_low and T_High registers
  configure: Make "does libgio work" test pull in some actual functions
  util/cutils: Fix Coverity array overrun in freq_to_str()
  register: Remove unnecessary NULL check
  target/openrisc: Remove dead code attempting to check "is timer disabled"
  hw/input/ps2.c: Remove remnants of printf debug
  exynos: Fix bad printf format specifiers
  hw/arm/virt: ARM_VIRT must select ARM_GIC

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-11-17 16:41:47 +00:00
Peter Maydell
6b728efcb0 * Fixes for compiling on Haiku, and add Haiku VM for compile-testing
* Update NetBSD VM to version 9.1
 * Misc fixes (e.g. categorize some devices)
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 n7Jvsh25V066AFnHat7PnjcBVBRFfmR3xtA61PqvAMGEKW8tortbZbpqXO18Pv5p
 6P/GG9G3QE0v2rEsU5BNFWp/aD7fiWy/VPu3dGFUkI9/S3biatocldHn/9eyXz94
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Merge remote-tracking branch 'remotes/huth-gitlab/tags/pull-request-2020-11-17' into staging

* Fixes for compiling on Haiku, and add Haiku VM for compile-testing
* Update NetBSD VM to version 9.1
* Misc fixes (e.g. categorize some devices)

# gpg: Signature made Tue 17 Nov 2020 09:20:31 GMT
# gpg:                using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg:                issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* remotes/huth-gitlab/tags/pull-request-2020-11-17:
  max111x: put it into the 'misc' category
  nand: put it into the 'storage' category
  ads7846: put it into the 'input' category
  ssd0323: put it into the 'display' category
  gitlab-ci: Use $CI_REGISTRY instead of hard-coding registry.gitlab.com
  target/microblaze: Fix possible array out of bounds in mmu_write()
  tests/vm: update NetBSD to 9.1
  tests/vm: Add Haiku test based on their vagrant images
  configure: Add a proper check for sys/ioccom.h and use it in tpm_ioctl.h
  configure: Do not build pc-bios/optionrom on Haiku
  configure: Fix the _BSD_SOURCE define for the Haiku build
  qemu/bswap: Remove unused qemu_bswap_len()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-11-17 14:12:21 +00:00
Peter Maydell
7b0263cb14 target/openrisc: Remove dead code attempting to check "is timer disabled"
In the mtspr helper we attempt to check for "is the timer disabled"
with "if (env->ttmr & TIMER_NONE)".  This is wrong because TIMER_NONE
is zero and the condition is always false (Coverity complains about
the dead code.)

The correct check would be to test whether the TTMR_M field in the
register is equal to TIMER_NONE instead.  However, the
cpu_openrisc_timer_update() function checks whether the timer is
enabled (it looks at cpu->env.is_counting, which is set to 0 via
cpu_openrisc_count_stop() when the TTMR_M field is set to
TIMER_NONE), so there's no need to check for "timer disabled" in the
target/openrisc code.  Instead, simply remove the dead code.

Fixes: Coverity CID 1005812
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Stafford Horne <shorne@gmail.com>
Message-id: 20201103114654.18540-1-peter.maydell@linaro.org
2020-11-17 12:56:32 +00:00
AlexChen
f25c7ca0ce target/microblaze: Fix possible array out of bounds in mmu_write()
The size of env->mmu.regs is 3, but the range of 'rn' is [0, 5].
To avoid data access out of bounds, only if 'rn' is less than 3, we
can print env->mmu.regs[rn]. In other cases, we can print
env->mmu.regs[MMU_R_TLBX].

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Alex Chen <alex.chen@huawei.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-Id: <5FA10ABA.1080109@huawei.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2020-11-17 09:45:24 +01:00