Each operand can have a maximum length of 16. Make sure to prepare all
reads/writes before writing.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Access at most single pages and document why. Using the access helpers
might over-indicate watchpoints within the same page, I guess we can
live with that.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We can process a maximum of 256 bytes, crossing two pages.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We can process a maximum of 256 bytes, crossing two pages.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We can process a maximum of 256 bytes, crossing two pages. Calculate the
accessed range upfront - src is accessed right-to-left.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We can process a maximum of 256 bytes, crossing two pages.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We can process a maximum of 256 bytes, crossing two pages. While at it,
increment the length once.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We can process a maximum of 256 bytes, crossing two pages.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
The last remaining bit is padding with two bytes.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
The last remaining bit for MVC is handling destructive overlaps in a
fault-safe way.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
As we are moving between address spaces, we can use access_memmove()
without checking for destructive overlaps (especially of real storage
locations):
"Each storage operand is processed left to right. The
storage-operand-consistency rules are the same as
for MOVE (MVC), except that when the operands
overlap in real storage, the use of the common real-
storage locations is not necessarily recognized."
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Replace fast_memmove() variants by access_memmove() variants, that
first try to probe access to all affected pages (maximum is two pages).
Introduce access_get_byte()/access_set_byte(). We might be able to speed
up memmove in special cases even further (do single-byte access, use
memmove() for remaining bytes in page), however, we'll skip that for now.
In MVCOS, simply always call access_memmove_as() and drop the TODO
about LAP. LAP is already handled in the MMU.
Get rid of adj_len_to_page(), which is now unused.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Replace fast_memset() by access_memset(), that first tries to probe
access to all affected pages (maximum is two). We'll use the same
mechanism for other types of accesses soon.
Only in very rare cases (especially TLB_NOTDIRTY), we'll have to
fallback to ld/st helpers. Try to speed up that case as suggested by
Richard.
We'll rework most involved handlers soon to do all accesses via new
fault-safe helpers, especially MVC.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Although we basically ignore the index all the time for CONFIG_USER_ONLY,
let's simply skip all the checks and always return MMU_USER_IDX in
cpu_mmu_index() and get_mem_index().
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
24 and 31-bit address space handling is wrong when it comes to storing
back the addresses to the register.
While at it, read gprs 0 implicitly.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Bit position 32-55 of general register 0 must be zero.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
... and don't perform any move in case the length is zero.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Triggered by a review comment from Richard, also MVCOS has a 32-bit
length in 24/31-bit addressing mode. Add a new helper.
Rename wrap_length() to wrap_length31().
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Let's stay within single pages.
... and indicate cc=3 in case there is work remaining. Keep unicode
padding simple.
While reworking, properly wrap the addresses.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We have to mask of any unused bits. While at it, document what exactly is
missing.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Perform the checks documented in the PoP.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Let's use the new helper, that also detects destructive overlaps when
wrapping.
We'll make the remaining code (e.g., fast_memmove()) aware of wrapping
later.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Let's increment the length once.
While at it, cleanup the comment. The memset() example is given as a
programming note in the PoP, so drop the description.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Process max 4k bytes at a time, writing back registers between the
accesses. The instruction is interruptible.
"For operands longer than 2K bytes, access exceptions are not
recognized for locations more than 2K bytes beyond the current location
being processed."
Note that on z/Architecture, 2k vs. 4k access cannot get differentiated as
long as pages are not crossed. This seems to be a leftover from ESA/390.
Simply stay within single pages.
MVCL handling is quite different than MVCLE/MVCLU handling, so split up
the handlers.
Defer interrupt handling, as that will require more thought, add a TODO
for that.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We'll have to zero-out unused bit positions, so make sure to write the
addresses back.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We have to zero out unused bits in 24 and 31-bit addressing mode.
Provide a new helper.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We use the marker "-1" for "no exception". s390_cpu_do_interrupt() might
get confused by that.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
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Merge remote-tracking branch 'remotes/cleber/tags/python-next-pull-request' into staging
Python (acceptance tests) queue, 2019-09-19
# gpg: Signature made Thu 19 Sep 2019 17:24:04 BST
# gpg: using RSA key 7ABB96EB8B46B94D5E0FE9BB657E8D33A5F209F3
# gpg: Good signature from "Cleber Rosa <crosa@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 7ABB 96EB 8B46 B94D 5E0F E9BB 657E 8D33 A5F2 09F3
* remotes/cleber/tags/python-next-pull-request:
BootLinuxSshTest: Only run the tests when explicitly requested
tests/acceptance: Specify arch for QueryCPUModelExpansion
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In commit 27a296fce9 we switched the qemu-ga manpage over to
being built from Sphinx. The makefile rules for this were correct
for an out-of-tree build, but break for in-tree builds if Sphinx is
present and we're trying to build the documentation.
Specifically, because Sphinx refuses to build output files into
the same directory as its sources, for an in-tree build we tell
it to build into a subdirectory docs/built, and set up a makefile
variable MANUAL_BUILDDIR indicating where the docs are going.
The makefile rule telling Make how to build qemu-ga.8 correctly
used this variable, but the lines adding qemu-ga.8 to the list
of DOCS to be built and the 'make install' rune did not. The
effect was that for an in-tree build we told Make to build
'docs/interop/qemu-ga.8' but did not provide a specific rule for
doing so, which caused Make to fall back to the old rules.make
rule for building any "%.8" file. Make tried to invoke texi2pod
with a bogus command line, resulting in the error:
GEN docs/interop/qemu-ga.8
No filename or title
make: *** [rules.mak:394: docs/interop/qemu-ga.8]
Fix this by using $(MANUAL_BUILDDIR) when constructing the
list of DOCS files we want to build and also in the source
file name we install for 'make install'.
(Among other things, this broke the Shippable CI builds.)
Fixes: 27a296fce9
Reported-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20190919155957.12618-1-peter.maydell@linaro.org
Tested-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Currently the Avocado framework does not distinct the time spent
downloading assets vs. the time spent running a test. With big
assets (like a full VM image) the tests likely fail.
This is a limitation known by the Avocado team.
Until this issue get fixed, do not run this tests automatically.
Tests can still be run setting the AVOCADO_TIMEOUT_EXPECTED
environment variable.
Reported-by: Gerd Hoffmann <kraxel@redhat.com>
Reported-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20190918122748.2144-1-philmd@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
This dependency is currently "automagic", which is bad for distributions.
Signed-off-by: James Le Cuirot <chewi@gentoo.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20190914145155.19360-1-chewi@gentoo.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
machdep.cacheline_size is an integer, not a long. Since PowerPC is
big-endian this causes sysctlbyname() to fill in the upper bits of the
argument, rather than the correct 'lower bits' of the word. Specify the
correct type to fix this.
Fixes: b255b2c8a5 ("util: add cacheinfo")
Signed-off-by: Justin Hibbits <chmeeedalf@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Tested-by: Justin Hibbits <chmeeedalf@gmail.com>
Message-Id: <20190821082546.5252-2-laurent@vivier.eu>
This contains quite a few patches that I'd like to target for 4.2.
They're mostly emulation fixes for the sifive_u board, which now much
more closely matches the hardware and can therefor run the same fireware
as what gets loaded onto the board. Additional user-visible
improvements include:
* support for loading initrd files from the command line into Linux, via
/chosen/linux,initrd-{start,end} device tree nodes.
* The conversion of LOG_TRACE to trace events.
* The addition of clock DT nodes for our uart and ethernet.
This also includes some preliminary work for the H extension patches,
but does not include the H extension patches as I haven't had time to
review them yet.
This passes my OE boot test on 32-bit and 64-bit virt machines, as well
as a 64-bit upstream Linux boot on the sifive_u machine. It has been
fixed to actually pass "make check" this time.
Changes since v2 (never made it to the list):
* Sets the sifive_u machine default core count to 2 instead of 5.
Changes since v1 <20190910190513.21160-1-palmer@sifive.com>:
* Sets the sifive_u machine default core count to 5 instead of 1, as
it's impossible to have a single core sifive_u machine.
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Merge remote-tracking branch 'remotes/palmer/tags/riscv-for-master-4.2-sf1-v3' into staging
RISC-V Patches for the 4.2 Soft Freeze, Part 1, v3
This contains quite a few patches that I'd like to target for 4.2.
They're mostly emulation fixes for the sifive_u board, which now much
more closely matches the hardware and can therefor run the same fireware
as what gets loaded onto the board. Additional user-visible
improvements include:
* support for loading initrd files from the command line into Linux, via
/chosen/linux,initrd-{start,end} device tree nodes.
* The conversion of LOG_TRACE to trace events.
* The addition of clock DT nodes for our uart and ethernet.
This also includes some preliminary work for the H extension patches,
but does not include the H extension patches as I haven't had time to
review them yet.
This passes my OE boot test on 32-bit and 64-bit virt machines, as well
as a 64-bit upstream Linux boot on the sifive_u machine. It has been
fixed to actually pass "make check" this time.
Changes since v2 (never made it to the list):
* Sets the sifive_u machine default core count to 2 instead of 5.
Changes since v1 <20190910190513.21160-1-palmer@sifive.com>:
* Sets the sifive_u machine default core count to 5 instead of 1, as
it's impossible to have a single core sifive_u machine.
# gpg: Signature made Tue 17 Sep 2019 16:43:30 BST
# gpg: using RSA key 00CE76D1834960DFCE886DF8EF4CA1502CCBAB41
# gpg: issuer "palmer@dabbelt.com"
# gpg: Good signature from "Palmer Dabbelt <palmer@dabbelt.com>" [unknown]
# gpg: aka "Palmer Dabbelt <palmer@sifive.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 00CE 76D1 8349 60DF CE88 6DF8 EF4C A150 2CCB AB41
* remotes/palmer/tags/riscv-for-master-4.2-sf1-v3: (48 commits)
gdbstub: riscv: fix the fflags registers
target/riscv: Use TB_FLAGS_MSTATUS_FS for floating point
target/riscv: Fix mstatus dirty mask
target/riscv: Use both register name and ABI name
riscv: sifive_u: Update model and compatible strings in device tree
riscv: sifive_u: Remove handcrafted clock nodes for UART and ethernet
riscv: sifive_u: Fix broken GEM support
riscv: sifive_u: Instantiate OTP memory with a serial number
riscv: sifive: Implement a model for SiFive FU540 OTP
riscv: roms: Update default bios for sifive_u machine
riscv: sifive_u: Change UART node name in device tree
riscv: sifive_u: Update UART base addresses and IRQs
riscv: sifive_u: Reference PRCI clocks in UART and ethernet nodes
riscv: sifive_u: Add PRCI block to the SoC
riscv: sifive_u: Generate hfclk and rtcclk nodes
riscv: sifive: Implement PRCI model for FU540
riscv: sifive_u: Update PLIC hart topology configuration string
riscv: sifive_u: Update hart configuration to reflect the real FU540 SoC
riscv: sifive_u: Set the minimum number of cpus to 2
riscv: hart: Add a "hartid-base" property to RISC-V hart array
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This file is version-controlled, and not generated from a .json file.
Fixes: bf582c3461
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190912184607.3507-1-eblake@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The "access" arguments clash with a macro under Windows with MinGW:
CC m68k-softmmu/target/m68k/fpu_helper.o
target/m68k/fpu_helper.c: In function 'fmovem_predec':
target/m68k/fpu_helper.c:405:56: error: macro "access" passed 4 arguments,
but takes just 2
size = access(env, addr, &env->fregs[i], ra);
So this renames them access_fn.
Tested with:
./configure --target-list=m68k-softmmu
make -j8
Signed-off-by: KONRAD Frederic <frederic.konrad@adacore.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1568296920-29939-1-git-send-email-frederic.konrad@adacore.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
We've got a separate option to configure the accelerator nowadays, which
is shorter to type and the preferred way of specifying an accelerator.
Use it in the source and examples to show that it is the favored option.
(However, do not touch the places yet which also specify other machine
options or multiple accelerators - these are currently still better
handled with one single "-machine" statement instead)
Signed-off-by: Thomas Huth <thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20190904052739.22123-1-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
"qemu/cutils.h" contains various qemu_strtosz_*() functions
useful to convert strings to size. It seems natural to have
the opposite usage (from size to string) there too.
The function definition is already in util/cutils.c.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-Id: <20190903120555.7551-1-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This makes sure reads are confined to vga video memory.
v3: use uint32_t, fix cut+paste bug.
v2: fix ati_cursor_draw_line too.
Reported-by: xu hang <flier_m@outlook.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190917111441.27405-3-kraxel@redhat.com
At the moment this test runs on whatever the host arch is. But it looks
for 'unavailable-features' which is an x86 specific cpu property. Tag it
to always use qemu-system-x86_64.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20190918070654.19356-1-david@gibson.dropbear.id.au>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Event format ending with newlines confuse the trace reports.
Forbid them.
Add a check to refuse new format added with trailing newline:
$ make
[...]
GEN hw/misc/trace.h
Traceback (most recent call last):
File "scripts/tracetool.py", line 152, in <module>
main(sys.argv)
File "scripts/tracetool.py", line 143, in main
events.extend(tracetool.read_events(fh, arg))
File "scripts/tracetool/__init__.py", line 367, in read_events
event = Event.build(line)
File "scripts/tracetool/__init__.py", line 281, in build
raise ValueError("Event format can not end with a newline character")
ValueError: Error at hw/misc/trace-events:121: Event format can not end with a newline character
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190916095121.29506-3-philmd@redhat.com
Message-Id: <20190916095121.29506-3-philmd@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
While the tracing framework does not forbid trailing newline in
events format string, using them lead to confuse output.
It is the responsibility of the backend to properly end an event
line.
Some of our formats have trailing newlines, remove them.
[Fixed typo in commit description reported by Eric Blake
<eblake@redhat.com>
--Stefan]
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190916095121.29506-2-philmd@redhat.com
Message-Id: <20190916095121.29506-2-philmd@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This adds a trace point which prints every loaded image. This includes
bios/firmware/kernel/initradmdisk/pcirom.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190613050937.124903-1-aik@ozlabs.ru>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
