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2016-03-08acpi: arm: add fw_cfg device node to dsdtGabriel L. Somlo
Add a fw_cfg device node to the ACPI DSDT. This is mostly informational, as the authoritative fw_cfg MMIO region(s) are listed in the Device Tree. However, since we are building ACPI tables, we might as well be thorough while at it... Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Tested-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Marc Marí <markmb@redhat.com> Reviewed-by: Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Message-id: 1455906029-25565-5-git-send-email-somlo@cmu.edu Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2016-03-08acpi: pc: add fw_cfg device node to dsdtGabriel L. Somlo
Add a fw_cfg device node to the ACPI DSDT. While the guest-side firmware can't utilize this information (since it has to access the hard-coded fw_cfg device to extract ACPI tables to begin with), having fw_cfg listed in ACPI will help the guest kernel keep a more accurate inventory of in-use IO port regions. Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Marc Marí <markmb@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Message-id: 1455906029-25565-4-git-send-email-somlo@cmu.edu Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2016-03-08pc: fw_cfg: move ioport base constant to pc.hGabriel L. Somlo
Move BIOS_CFG_IOPORT define from pc.c to pc.h, and rename it to FW_CFG_IO_BASE. Cc: Marc Marí <markmb@redhat.com> Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Marc Marí <markmb@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Message-id: 1455906029-25565-3-git-send-email-somlo@cmu.edu Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2016-03-08fw_cfg: expose control register size in fw_cfg.hGabriel L. Somlo
Expose the size of the control register (FW_CFG_CTL_SIZE) in fw_cfg.h. Add comment to fw_cfg_io_realize() pointing out that since the 8-bit data register is always subsumed by the 16-bit control register in the port I/O case, we use the control register width as the *total* width of the (classic, non-DMA) port I/O region reserved for the device. Cc: Marc Marí <markmb@redhat.com> Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Marc Marí <markmb@redhat.com> Message-id: 1455906029-25565-2-git-send-email-somlo@cmu.edu Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2016-03-08Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* RAMBlock vs. MemoryRegion cleanups from Fam * mru_section optimization from Fam * memory.txt improvements from Peter and Xiaoqiang * i8257 fix from Hervé * -daemonize fix * Cleanups and small fixes from Alex, Praneith, Wei # gpg: Signature made Mon 07 Mar 2016 17:08:59 GMT using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" * remotes/bonzini/tags/for-upstream: scsi-bus: Remove tape command from scsi_req_xfer kvm/irqchip: use bitmap utility for gsi tracking MAINTAINERS: Add entry for include/sysemu/kvm*.h doc/memory.txt: correct description of MemoryRegionOps fields doc/memory.txt: correct a logic error icount: possible options for sleep are on or off exec: Introduce AddressSpaceDispatch.mru_section exec: Factor out section_covers_addr exec: Pass RAMBlock pointer to qemu_ram_free memory: Drop MemoryRegion.ram_addr memory: Implement memory_region_get_ram_addr with mr->ram_block memory: Move assignment to ram_block to memory_region_init_* exec: Return RAMBlock pointer from allocating functions i8257: fix Terminal Count status log: do not log if QEMU is daemonized but without -D Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-07scsi-bus: Remove tape command from scsi_req_xferAlex Pyrgiotis
Remove the RECOVER_BUFFERED_DATA command from the list of commands that are handled by scsi_req_xfer(). Given that this command is tape-specific, it should be handled only by scsi_stream_req_xfer(). Signed-off-by: Alex Pyrgiotis <apyrgio@arrikto.com> Message-Id: <1457365822-22435-1-git-send-email-apyrgio@arrikto.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07kvm/irqchip: use bitmap utility for gsi trackingWei Yang
By using utilities in bitops and bitmap, this patch tries to make it more friendly to audience. No functional change. Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Message-Id: <1457229445-25954-1-git-send-email-richard.weiyang@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07MAINTAINERS: Add entry for include/sysemu/kvm*.hThomas Huth
The include/sysemu/kvm*.h header files should be part of the overall KVM section. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1456403605-26587-1-git-send-email-thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07doc/memory.txt: correct description of MemoryRegionOps fieldsPeter Maydell
Probably what happened was that when the API was being designed it started off with an 'aligned' field, and then later the field name and semantics were changed but the docs weren't updated to match. Similarly, cpu_register_io_memory() does not exist anymore, so clarify the documentation for .old_mmio. Reported-by: Cao jin <caoj.fnst@cn.fujitsu.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07doc/memory.txt: correct a logic errorxiaoqiang zhao
In the regions overlap example, region B has a higher priority thus should has a larger priority number than C. Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com> Message-Id: <1456476051-15121-1-git-send-email-zxq_yx_007@163.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07icount: possible options for sleep are on or offPranith Kumar
icount sleep takes on or off as options. A few places mention sleep=no which is not accepted. This patch corrects them. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Message-Id: <1456499811-16819-1-git-send-email-bobby.prani@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07exec: Introduce AddressSpaceDispatch.mru_sectionFam Zheng
Under heavy workloads the lookup will likely end up with the same MemoryRegionSection from last time. Using a pointer to cache the result, like ram_list.mru_block, significantly reduces cost of address_space_translate. During address space topology update, as->dispatch will be reallocated so the pointer is invalidated automatically. Perf reports a visible drop on the cpu usage, because phys_page_find is not called. Before: 2.35% qemu-system-x86_64 [.] phys_page_find 0.97% qemu-system-x86_64 [.] address_space_translate_internal 0.95% qemu-system-x86_64 [.] address_space_translate 0.55% qemu-system-x86_64 [.] address_space_lookup_region After: 0.97% qemu-system-x86_64 [.] address_space_translate_internal 0.97% qemu-system-x86_64 [.] address_space_lookup_region 0.84% qemu-system-x86_64 [.] address_space_translate Signed-off-by: Fam Zheng <famz@redhat.com> Message-Id: <1456813104-25902-8-git-send-email-famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07exec: Factor out section_covers_addrFam Zheng
This will be shared by the next patch. Also add a comment explaining the unobvious condition on "size.hi". Signed-off-by: Fam Zheng <famz@redhat.com> Message-Id: <1456813104-25902-7-git-send-email-famz@redhat.com> [Small change to the comment. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07exec: Pass RAMBlock pointer to qemu_ram_freeFam Zheng
The only caller now knows exactly which RAMBlock to free, so it's not necessary to do the lookup. Reviewed-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Fam Zheng <famz@redhat.com> Message-Id: <1456813104-25902-6-git-send-email-famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07memory: Drop MemoryRegion.ram_addrFam Zheng
All references to mr->ram_addr are replaced by memory_region_get_ram_addr(mr) (except for a few assertions that are replaced with mr->ram_block). Reviewed-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Fam Zheng <famz@redhat.com> Message-Id: <1456813104-25902-5-git-send-email-famz@redhat.com> Acked-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07memory: Implement memory_region_get_ram_addr with mr->ram_blockFam Zheng
Signed-off-by: Fam Zheng <famz@redhat.com> Message-Id: <1456813104-25902-4-git-send-email-famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07memory: Move assignment to ram_block to memory_region_init_*Fam Zheng
We don't force "const" qualifiers with pointers in QEMU, but it's still good to keep a clean function interface. Assigning to mr->ram_block is in this sense ugly - one initializer mutating its owning object's state. Move it to memory_region_init_*, where mr->ram_addr is assigned. Reviewed-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Fam Zheng <famz@redhat.com> Message-Id: <1456813104-25902-3-git-send-email-famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07exec: Return RAMBlock pointer from allocating functionsFam Zheng
Previously we return RAMBlock.offset; now return the pointer to the whole structure. ram_block_add returns void now, error is completely passed with errp. Reviewed-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Fam Zheng <famz@redhat.com> Message-Id: <1456813104-25902-2-git-send-email-famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07i8257: fix Terminal Count statusHervé Poussineau
When a DMA transfer is done (ie all bytes have been transfered), the corresponding Terminal Count bit must be set in the status register. This bit is already cleared in i8257_read_cont and i8257_write_cont when required. This fixes (at least) floppy transfer in IBM 40p firmware, which checks in DMA controller if everything went fine. Signed-off-by: Hervé Poussineau <hpoussin@reactos.org> Message-Id: <1456404332-31556-1-git-send-email-hpoussin@reactos.org> Reviewed-by: John Snow <jsnow@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07log: do not log if QEMU is daemonized but without -DPaolo Bonzini
Commit 96c33a4 ("log: Redirect stderr to logfile if deamonized", 2016-02-22) wanted to move stderr of a daemonized QEMU to the file specified with -D. However, if -D was not passed, the patch had the side effect of not redirecting stderr to /dev/null. This happened because qemu_logfile was set to stderr rather than the expected value of NULL. The fix is simply in the "if" condition of do_qemu_set_log; the "if" for closing the file is also changed to match. Reported-by: Jan Tomko <jtomko@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-06Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2016-03-04' into ↵Peter Maydell
staging QAPI patches for 2016-03-04 # gpg: Signature made Sat 05 Mar 2016 09:47:19 GMT using RSA key ID EB918653 # gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" # gpg: aka "Markus Armbruster <armbru@pond.sub.org>" * remotes/armbru/tags/pull-qapi-2016-03-04: qapi: Drop useless 'data' member of unions chardev: Drop useless ChardevDummy type qapi: Avoid use of 'data' member of QAPI unions ui: Shorten references into InputEvent util: Shorten references into SocketAddress chardev: Shorten references into ChardevBackend qapi: Update docs to match recent generator changes qapi-visit: Expose visit_type_FOO_members() qapi: Rename 'fields' to 'members' in generated C code qapi: Rename 'fields' to 'members' in generator qapi-dealloc: Reduce use outside of generated code qmp-shell: fix pretty printing of JSON responses Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-05qapi: Drop useless 'data' member of unionsEric Blake
We started moving away from the use of the 'void *data' member in the C union corresponding to a QAPI union back in commit 544a373; recent commits have gotten rid of other uses. Now that it is completely unused, we can remove the member itself as well as the FIXME comment. Update the testsuite to drop the negative test union-clash-data. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1457021813-10704-11-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-05chardev: Drop useless ChardevDummy typeEric Blake
Commit d0d7708b made ChardevDummy be an empty wrapper type around ChardevCommon. But there is no technical reason for this indirection, so simplify the code by directly using the base type. Also change the fallback assignment to assign u.null rather than u.data, since a future patch will remove the data member of the C struct generated for QAPI unions. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1457106160-23614-1-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-05qapi: Avoid use of 'data' member of QAPI unionsEric Blake
QAPI code generators currently create a 'void *data' member as part of the anonymous union embedded in the C struct corresponding to a QAPI union. However, directly assigning to this member of the union feels a bit fishy, when we can assign to another member of the struct instead. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1457021813-10704-9-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-05ui: Shorten references into InputEventEric Blake
An upcoming patch will alter how simple unions, like InputEvent, are laid out, which will impact all lines of the form 'evt->u.XXX' (expanding it to the longer 'evt->u.XXX.data'). For better legibility in that patch, and less need for line wrapping, it's better to use a temporary variable to reduce the effect of a layout change to just the variable initializations, rather than every reference within an InputEvent. There was one instance in hid.c:hid_pointer_event() where the code was referring to evt->u.rel inside the case label where evt->u.abs is the correct name; thankfully, both members of the union have the same type, so it happened to work, but it is now cleaner. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1457021813-10704-8-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-05util: Shorten references into SocketAddressEric Blake
An upcoming patch will alter how simple unions, like SocketAddress, are laid out, which will impact all lines of the form 'addr->u.XXX' (expanding it to the longer 'addr->u.XXX.data'). For better legibility in that patch, and less need for line wrapping, it's better to use a temporary variable to reduce the effect of a layout change to just the variable initializations, rather than every reference within a SocketAddress. Also, take advantage of some C99 initialization where it makes sense (simplifying g_new0() to g_new()). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1457021813-10704-7-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-05chardev: Shorten references into ChardevBackendEric Blake
An upcoming patch will alter how simple unions, like ChardevBackend, are laid out, which will impact all lines of the form 'backend->u.XXX' (expanding it to the longer 'backend->u.XXX.data'). For better legibility in that patch, and less need for line wrapping, it's better to use a temporary variable to reduce the effect of a layout change to just the variable initializations, rather than every reference within a ChardevBackend. It doesn't hurt that this also makes the code more consistent: some clients touched here already had a temporary variable but weren't using it. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-By: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1457021813-10704-6-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-05qapi: Update docs to match recent generator changesEric Blake
Several commits have been changing the generator, but not updating the docs to match: - The implicit tag member is named "type", not "kind". Screwed up in commit 39a1815. - Commit 9f08c8ec made list types lazy, and thereby dropped UserDefOneList if nothing explicitly uses the list type. - Commit 51e72bc1 switched the parameter order with 'name' occurring earlier. - Commit e65d89bf changed the layout of UserDefOneList. - Prefer the term 'member' over 'field'. - We now expose visit_type_FOO_members() for objects. - etc. Rework the examples to show slightly more output (we don't want to show too much; that's what the testsuite is for), and regenerate the output to match all recent changes. Also, rearrange output to show .h files before .c (understanding the interface first often makes the implementation easier to follow). Reported-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1457021813-10704-5-git-send-email-eblake@redhat.com>
2016-03-05qapi-visit: Expose visit_type_FOO_members()Eric Blake
Dan Berrange reported a case where he needs to work with a QCryptoBlockOptions union type using the OptsVisitor, but only visit one of the branches of that type (the discriminator is not visited directly, but learned externally). When things were boxed, it was easy: just visit the variant directly, which took care of both allocating the variant and visiting its members, then store that pointer in the union type. But now that things are unboxed, we need a way to visit the members without allocation, done by exposing visit_type_FOO_members() to the user. Before the patch, we had quite a bit of code associated with object_members_seen to make sure that a declaration of the helper was in scope before any use of the function. But now that the helper is public and declared in the header, the .c file no longer needs to worry about topological sorting (the helper is always in scope), which leads to some nice cleanups. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1457021813-10704-4-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-05qapi: Rename 'fields' to 'members' in generated C codeEric Blake
C types and JSON objects don't have fields, but members. We shouldn't gratuitously invent terminology. This patch is a strict renaming of static genarated functions, plus the naming of the dummy filler member for empty structs, before the next patch exposes some of that naming to the rest of the code base. Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1457021813-10704-3-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-05qapi: Rename 'fields' to 'members' in generatorEric Blake
C types and JSON objects don't have fields, but members. We shouldn't gratuitously invent terminology. This patch is a strict renaming of generator code internals (including testsuite comments), before later patches rename C interfaces. No change to generated code with this patch. Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1457021813-10704-2-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-04qapi-dealloc: Reduce use outside of generated codeEric Blake
No need to roll our own use of the dealloc visitors when we can just directly use the qapi_free_FOO() functions that do what we want in one line. In net.c, inline net_visit() into its remaining lone caller. After this patch, test-visitor-serialization.c is the only non-generated file that needs to use a dealloc visitor, because it is testing low level aspects of the visitor interface. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1456262075-3311-2-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-04qmp-shell: fix pretty printing of JSON responsesDaniel P. Berrange
Pretty printing of JSON responses is important to be able to understand large responses from query commands in particular. Unfortunately this was broken during the addition of the verbose flag in commit 1ceca07e48ead0dd2e41576c81d40e6a91cafefd Author: John Snow <jsnow@redhat.com> Date: Wed Apr 29 15:14:04 2015 -0400 scripts: qmp-shell: Add verbose flag This is because that change turned the python data structure into a formatted JSON string before the pretty print was given it. So we're just pretty printing a string, which is a no-op. The original pretty printer would output python objects. (QEMU) query-chardev { u'return': [ { u'filename': u'vc', u'frontend-open': False, u'label': u'parallel0'}, { u'filename': u'vc', u'frontend-open': True, u'label': u'serial0'}, { u'filename': u'unix:/tmp/qemp,server', u'frontend-open': True, u'label': u'compat_monitor0'}]} This fixes the problem by switching to outputting pretty formatted JSON text instead. This has the added benefit that the pretty printed output is now valid JSON text. Due to the way the verbose flag was handled, the pretty printing now applies to the command sent, as well as its response: (QEMU) query-chardev { "execute": "query-chardev", "arguments": {} } { "return": [ { "frontend-open": false, "label": "parallel0", "filename": "vc" }, { "frontend-open": true, "label": "serial0", "filename": "vc" }, { "frontend-open": true, "label": "compat_monitor0", "filename": "unix:/tmp/qmp,server" } ] } Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1456224706-1591-1-git-send-email-berrange@redhat.com> Tested-by: Kashyap Chamarthy <kchamart@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> [Bonus fix: multiple -p now work] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-04Merge remote-tracking branch ↵Peter Maydell
'remotes/pmaydell/tags/pull-target-arm-20160304' into staging target-arm queue: * Correct handling of writes to CPSR from gdbstub in user mode * virt: lift maximum RAM limit to 255GB * sdhci: implement reset * virt: if booting in Secure mode, provide secure-only RAM, make first flash device secure-only, and assume the EL3 boot rom will handle PSCI * bcm2835: use explicit endianness accessors rather than ldl/stl_phys * support big-endian in system mode for ARM * implement SETEND instruction * arm_gic: implement the GICv2 GICC_DIR register * fix SRS bug: only trap from S-EL1 to EL3 if specified mode is Mon # gpg: Signature made Fri 04 Mar 2016 11:38:53 GMT using RSA key ID 14360CDE # gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" # gpg: aka "Peter Maydell <pmaydell@gmail.com>" # gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" * remotes/pmaydell/tags/pull-target-arm-20160304: (30 commits) target-arm: Only trap SRS from S-EL1 if specified mode is MON hw/intc/arm_gic.c: Implement GICv2 GICC_DIR arm: boot: Support big-endian elfs loader: Add data swap option to load-elf loader: load_elf(): Add doc comment loader: add API to load elf header target-arm: implement BE32 mode in system emulation target-arm: implement setend target-arm: introduce tbflag for endianness target-arm: a64: Add endianness support target-arm: introduce disas flag for endianness target-arm: pass DisasContext to gen_aa32_ld*/st* target-arm: implement SCTLR.EE linux-user: arm: handle CPSR.E correctly in strex emulation linux-user: arm: set CPSR.E/SCTLR.E0E correctly for BE mode arm: cpu: handle BE32 user-mode as BE target-arm: cpu: Move cpu_is_big_endian to header target-arm: implement SCTLR.B, drop bswap_code linux-user: arm: pass env to get_user_code_* linux-user: arm: fix coding style for some linux-user signal functions ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04target-arm: Only trap SRS from S-EL1 if specified mode is MONRalf-Philipp Weinmann
Commit cbc0326b6fb9 caused SRS instructions executed from Secure EL1 to trap to EL3 even if the specified mode was not monitor mode. According to the ARMv8 Architecture reference manual [F6.1.203], ALL of the following conditions need to be met for SRS to trap to EL3: * It is executed at Secure PL1. * The specified mode is monitor mode. * EL3 is using AArch64. Correct the condition governing the trap to EL3 to check the specified mode. Signed-off-by: Ralf-Philipp Weinmann <ralf+devel@comsecuris.com> Message-id: 20160222224251.GA11654@beta.comsecuris.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> [PMM: tweaked comment text to read 'specified mode'; edited commit message] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04hw/intc/arm_gic.c: Implement GICv2 GICC_DIRPeter Maydell
The GICv2 introduces a new CPU interface register GICC_DIR, which allows an OS to split the "priority drop" and "deactivate interrupt" parts of interrupt completion. Implement this register. (Note that the register is at offset 0x1000 in the CPU interface, which means it is on a different 4K page from all the other registers.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Sergey Fedorov <serge.fdrv@gmail.com> Message-id: 1456854176-7813-1-git-send-email-peter.maydell@linaro.org
2016-03-04arm: boot: Support big-endian elfsPeter Crosthwaite
Support ARM big-endian ELF files in system-mode emulation. When loading an elf, determine the endianness mode expected by the elf, and set the relevant CPU state accordingly. With this, big-endian modes are now fully supported via system-mode LE, so there is no need to restrict the elf loading to the TARGET endianness so the ifdeffery on TARGET_WORDS_BIGENDIAN goes away. Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> [PMM: fix typo in comments] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04loader: Add data swap option to load-elfPeter Crosthwaite
Some CPUs are of an opposite data-endianness to other components in the system. Sometimes elfs have the data sections layed out with this CPU data-endianness accounting for when loaded via the CPU, so byte swaps (relative to other system components) will occur. The leading example, is ARM's BE32 mode, which is is basically LE with address manipulation on half-word and byte accesses to access the hw/byte reversed address. This means that word data is invariant across LE and BE32. This also means that instructions are still LE. The expectation is that the elf will be loaded via the CPU in this endianness scheme, which means the data in the elf is reversed at compile time. As QEMU loads via the system memory directly, rather than the CPU, we need a mechanism to reverse elf data endianness to implement this possibility. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04loader: load_elf(): Add doc commentPeter Crosthwaite
Document the usage of load_elf() for clarity on current features. Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04loader: add API to load elf headerPeter Crosthwaite
Add an API to load an elf header header from a file. Populates a buffer with the header contents, as well as a boolean for whether the elf is 64b or not. Both arguments are optional. Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> [PMM: Fix typo in comment] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04target-arm: implement BE32 mode in system emulationPaolo Bonzini
System emulation only has a little-endian target; BE32 mode is implemented by adjusting the low bits of the address for every byte and halfword load and store. 64-bit accesses flip the low and high words. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [PC changes: * rebased against master (Jan 2016) ] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04target-arm: implement setendPaolo Bonzini
Since this is not a high-performance path, just use a helper to flip the E bit and force a lookup in the hash table since the flags have changed. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04target-arm: introduce tbflag for endiannessPeter Crosthwaite
Introduce a tbflags for endianness, set based upon the CPUs current endianness. This in turn propagates through to the disas endianness flag. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04target-arm: a64: Add endianness supportPeter Crosthwaite
Set the dc->mo_endianness flag for AA64 and use it in all ldst ops. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04target-arm: introduce disas flag for endiannessPaolo Bonzini
Introduce a disas flag for setting the CPU data endianness. This allows control of the endianness from the CPU state rather than hard-coding it to TARGET_WORDS_BIGENDIAN. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [ PC changes: * Split off as new patch from original: "target-arm: introduce tbflag for CPSR.E" * Wrote commit message from scratch ] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04target-arm: pass DisasContext to gen_aa32_ld*/st*Paolo Bonzini
We'll need the DisasContext in the next patch to retrieve the desired endianness, so pass it as a whole to gen_aa32_ld*/st*. Unfortunately we cannot let those functions call get_mem_index, because of user-mode load/store instructions. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [ PC changes: * Fix long lines ] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04target-arm: implement SCTLR.EEPeter Crosthwaite
Implement SCTLR.EE bit which controls data endianess for exceptions and page table translations. SCTLR.EE is mirrored to the CPSR.E bit on exception entry. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04linux-user: arm: handle CPSR.E correctly in strex emulationPaolo Bonzini
Now that CPSR.E is set correctly, prepare for when setend will be able to change it; bswap data in and out of strex manually by comparing SCTLR.B, CPSR.E and TARGET_WORDS_BIGENDIAN (we do not have the luxury of using TCGMemOps). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [ PC changes: * Moved SCTLR/CPSR logic to arm_cpu_data_is_big_endian ] Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04linux-user: arm: set CPSR.E/SCTLR.E0E correctly for BE modePeter Crosthwaite
If doing big-endian linux-user mode, set both the CPSR.E and SCTLR.E0E bits. This sets big-endian mode for data accesses. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04arm: cpu: handle BE32 user-mode as BEPeter Crosthwaite
endian with address manipulations on subword accesses (to give the illusion of BE). But user-mode cannot tell the difference and is already implemented as straight BE. So handle the difference in the endianess query, where USER mode is BE and system is not. Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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