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* linux-user: Put PPC AT_IGNOREPPC auxv entries in the right placePeter Maydell2017-06-291-11/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 32-bit PPC auxv is a bit complicated because in the mists of time it used to be 16-aligned rather than directly after the environment. Older glibc versions had code to try to probe for whether it needed alignment or not: https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c;hb=e84eabb3871c9b39e59323bf3f6b98c2ca9d1cd0 and the kernel has code which puts some magic entries at the bottom to ensure that the alignment probe fails: http://elixir.free-electrons.com/linux/latest/source/arch/powerpc/include/asm/elf.h#L158 QEMU has similar code too, but it was broken by commit 7c4ee5bcc82e64, which changed elfload.c from filling in the auxv starting at the highest address and working down to starting at the lowest address and working up. This means that the ARCH_DLINFO hook must now be invoked first rather than last, and the entries in it for PPC must be reversed so that the magic AT_IGNOREPPC entries come at the lowest address in the auxv as they should. The effect of this was that if running a guest binary that used an old glibc with the alignment probing the guest ld.so code would segfault if the size of the guest environment and argv happened to put the auxv at an address that triggered the alignment code in the guest glibc. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Tested-by: Richard Henderson <rth@twiddle.net> Message-id: 1498582198-6649-1-git-send-email-peter.maydell@linaro.org
* target/openrisc: implement shadow registersStafford Horne2017-05-041-1/+1
| | | | | | | | | | | | | | | | Shadow registers are part of the openrisc spec along with sr[cid], as part of the fast context switching feature. When exceptions occur, instead of having to save registers to the stack if enabled the CID will increment and a new set of registers will be available. This patch only implements shadow registers which can be used as extra scratch registers via the mfspr and mtspr if required. This is implemented in a way where it would be easy to add on the fast context switching, currently cid is hardcoded to 0. This is need for openrisc linux smp kernels to boot correctly. Signed-off-by: Stafford Horne <shorne@gmail.com>
* linux-user: Use correct types in load_symbols()Peter Maydell2017-02-161-7/+15
| | | | | | | | | | | | | | | | | | | | Coverity doesn't like the code in load_symbols() which assumes it can use 'int' for a variable that might hold an offset into the guest ELF file, because in a 64-bit guest that could overflow. Guest binaries with 2GB sections aren't very likely and this isn't a security issue because we fully trust the guest linux-user binary anyway, but we might as well use the right types, which will placate Coverity. Use uint64_t to hold section sizes, and bail out if the symbol table is too large rather than just overflowing an int. (Coverity issue CID1005776) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <1486249533-5260-1-git-send-email-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* target/openrisc: Keep SR_F in a separate variableRichard Henderson2017-02-131-2/+1Star
| | | | | | | This avoids having to keep merging and extracting the flag from SR. Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
* nios2: Add usermode binaries emulationMarek Vasut2017-01-241-0/+57
| | | | | | | | | | | | | | | Add missing bits for qemu-user required for emulating Altera Nios2 userspace binaries. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Chris Wulff <crwulff@gmail.com> Cc: Jeff Da Silva <jdasilva@altera.com> Cc: Ley Foon Tan <lftan@altera.com> Cc: Sandra Loosemore <sandra@codesourcery.com> Cc: Yves Vandervennet <yvanderv@altera.com> Reviewed-by: Alexander Graf <agraf@suse.de> Message-Id: <20170118220146.489-4-marex@denx.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
* linux-user: Add HPPA startup and main loopRichard Henderson2017-01-231-0/+24
| | | | | | Including support for the atomic memory op syscalls. Signed-off-by: Richard Henderson <rth@twiddle.net>
* linux-user: Support stack-grows-up in elfload.cRichard Henderson2017-01-231-65/+170
| | | | | | | | | HPPA is a (the) stack-grows-up target, and supporting that requires rearranging how we compute addresses while laying out the initial program stack. In addition, hppa32 requires 64-byte stack alignment so parameterize that as well. Signed-off-by: Richard Henderson <rth@twiddle.net>
* linux-user/elfload: ensure mmap_lock() held while setting upAlex Bennée2016-10-311-0/+4
| | | | | | | | | | | | | Future patches will enforce the holding of mmap_lock() when we are manipulating internal memory structures. Technically it doesn't matter in the case of elfload as we haven't started executing yet. However it is easier to grab the lock when required than special case the translate-all API. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Message-Id: <20161027151030.20863-8-alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user: ppc64: fix ARCH_206 bit in AT_HWCAPMichael Walle2016-09-231-2/+6
| | | | | | | | | | | | | | Only the POWER[789] CPUs should have the ARCH_206 bit set. This is what the linux kernel does. I guess this was also the intention of commit 0e019746. We have to make sure all *206 bits are set. Before this patch, the flags check in the GET_FEATURES2 macro returned true if _any_ bit was set. This worked well as long as there was only one bit set in the 'flag' parameter. But as explained before, we have to make sure all bits in the 'flag' parameter are set. Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* linux-user: Use glib malloc functions in load_symbols()Peter Maydell2016-09-211-7/+7
| | | | | | | | | | Switch to using the glib malloc functions in load_symbols(); this deals with a Coverity complaint about possible integer overflow calculating the allocation size with 'nsyms * sizeof(*syms)'. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: Check dump_write() return in elf_core_dump()Peter Maydell2016-09-211-1/+3
| | | | | | | | | One of the calls to dump_write() in elf_core_dump() was missing a check for failure (spotted by Coverity). Add the check to bring it into line with the other calls from this function. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: Pass missing MAP_ANONYMOUS to target_mmap() callPeter Maydell2016-09-211-1/+1
| | | | | | | | | | | | A target_mmap() call in load_elf_binary() was missing the MAP_ANONYMOUS flag. (Spotted by Coverity, because target_mmap() will try to use -1 as the filedescriptor in this case.) This has never been noticed because the code in question is for handling ancient SVr4 iBCS2 binaries. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: complete omission of removing uses of strdupWei Jiangang2016-09-141-5/+2Star
| | | | | | | | | | The 900cfbc just removed two unchecked uses of strdup in fill_psinfo and missed the rest in core_dump_filename. This patch fixes it. Signed-off-by: Wei Jiangang <weijg.fnst@cn.fujitsu.com> Message-Id: <1459997185-15669-2-git-send-email-weijg.fnst@cn.fujitsu.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* os-posix: include sys/mman.hPaolo Bonzini2016-06-161-1/+0Star
| | | | | | | | | qemu/osdep.h checks whether MAP_ANONYMOUS is defined, but this check is bogus without a previous inclusion of sys/mman.h. Include it in sysemu/os-posix.h and remove it from everywhere else. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user: arm: Remove ARM_cpsr and similar #definesPeter Maydell2016-05-271-9/+10
| | | | | | | | | | | | | | | | The #defines of ARM_cpsr and friends in linux-user/arm/target-syscall.h can clash with versions in the system headers if building on an ARM or AArch64 build (though this seems to be dependent on the version of the system headers). The QEMU defines are not very useful (it's not clear that they're intended for use with the target_pt_regs struct rather than (say) the CPUARMState structure) and we only use them in one function in elfload.c anyway. So just remove the #defines and directly access regs->uregs[]. Reported-by: Christopher Covington <cov@codeaurora.org> Tested-by: Christopher Covington <cov@codeaurora.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* util: move declarations out of qemu-common.hVeronia Bahaa2016-03-221-0/+1
| | | | | | | | | | Move declarations out of qemu-common.h for functions declared in utils/ files: e.g. include/qemu/path.h for utils/path.c. Move inline functions out of qemu-common.h and into new files (e.g. include/qemu/bcd.h) Signed-off-by: Veronia Bahaa <veroniabahaa@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user: Clean up includesPeter Maydell2016-01-291-9/+1Star
| | | | | | | | | | Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1453832250-766-10-git-send-email-peter.maydell@linaro.org
* user: introduce "-d page"Paolo Bonzini2015-12-171-4/+4
| | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* translate-all: ensure host page mask is always extended with 1'sPaolo Bonzini2015-12-021-2/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | Anthony reported that >4GB guests on Xen with 32bit QEMU broke after commit 4ed023c ("Round up RAMBlock sizes to host page sizes", 2015-11-05). In that patch sizes are masked against qemu_host_page_size/mask which are uintptr_t, and thus 32bit on a 32bit QEMU, even though the ram space might be bigger than 4GB on Xen. Since ram_addr_t is not available on user-mode emulation targets, ensure that we get a sign extension when masking away the low bits of the address. Remove the ~10 year old scary comment that the type of these variables is probably wrong, with another equally scary comment. The new comment however does not have "???" in it, which is arguably an improvement. For completeness use the alignment macros in linux-user and bsd-user instead of manually doing an &. linux-user and bsd-user are not affected by the Xen issue, however. Reviewed-by: Juan Quintela <quintela@redhat.com> Reported-by: Anthony PERARD <anthony.perard@citrix.com> Fixes: 4ed023ce2a39ab5812d33cf4d819def168965a7f Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user: Use g_new() & friends where that makes obvious senseMarkus Armbruster2015-10-081-1/+1
| | | | | | | | | | | | | | | g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer, for two reasons. One, it catches multiplication overflowing size_t. Two, it returns T * rather than void *, which lets the compiler catch more type errors. This commit only touches allocations with size arguments of the form sizeof(T). Same Coccinelle semantic patch as in commit b45c03f. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
* linux-user: remove MAX_ARG_PAGES limitStefan Brüns2015-09-281-55/+55
| | | | | | | | | | | | Instead of creating a temporary copy for the whole environment and the arguments, directly copy everything to the target stack. For this to work, we have to change the order of stack creation and copying the arguments. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: remove unused image_info membersStefan Brüns2015-09-281-3/+0Star
| | | | | | Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* ppc: Rename ELF_MACHINE to be PPC specificPeter Crosthwaite2015-09-251-0/+1
| | | | | | | | | | | | | | | | Rename ELF_MACHINE to be PPC specific. This is used as-is by the various PPC bootloaders and is locally defined to ELF_MACHINE in linux user in PPC specific ifdeffery. This removes another architecture specific definition from the global namespace (as desired by multi-arch). Cc: Alexander Graf <agraf@suse.de> Cc: qemu-ppc@nongnu.org Reviewed-by: Richard Henderson <rth@twiddle.net> Acked-By: Riku Voipio <riku.voipio@linaro.org> Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* arm: Remove ELF_MACHINE from cpu.hPeter Crosthwaite2015-09-251-2/+2
| | | | | | | | | | | | | | | | | | | | The only generic code relying on this is linux-user. Linux user already has a lot of #ifdef TARGET_ customisation so instead, define ELF_ARCH as either EM_ARM or EM_AARCH64 appropriately. The armv7m bootloader can just pass EM_ARM directly, as that is architecture specific code. Note that arm_boot already has its own logic selecting an arm specific elf machine so this makes V7M more consistent with arm_boot. This removes another architecture specific definition from the global namespace. Cc: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Acked-By: Riku Voipio <riku.voipio@linaro.org> Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user: elfload: Provide default for elf_check_archPeter Crosthwaite2015-09-251-24/+4Star
| | | | | | | | | | | | | | | | | | | | | | | | For many arch's this macro is defined as the predicatable behaviour of checking the argument for eqaulity against ELF_ARCH. Provide a default define as such, so only archs with special handling (usually allowing multiple EM values) need to provide a def. Arches that do any of: 1: provide this def exactly the same way as the new default (alpha, x86_64) 2: check against ELF_MACHINE while defining ELF_ARCH == ELF_MACHINE (arm, aarch64) 3: check against EM_FOO directly while defining ELF_ARCH == EM_FOO (unicore32, sparc32, ppc32, mips, openrisc, sh4, cris, m86k) have their elf_check_arch removed as the default will provide the correct behaviour. Reviewed-by: Richard Henderson <rth@twiddle.net> Acked-By: Riku Voipio <riku.voipio@linaro.org> Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux_user: elfload: Default ELF_MACHINE to ELF_ARCHPeter Crosthwaite2015-09-251-0/+4
| | | | | | | | | | | In most (but not all) cases, ELF_MACHINE and ELF_ARCH are safely the same. Default ELF_MACHINE to ELF_ARCH. This makes defining ELF_MACHINE optional for target-*/cpu.h when they are known to match. Reviewed-by: Richard Henderson <rth@twiddle.net> Acked-By: Riku Voipio <riku.voipio@linaro.org> Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user: Support tilegx architecture in linux-userChen Gang2015-09-151-0/+23
| | | | | | | | | | | | | Add main working flow feature, system call processing feature, and elf64 tilegx binary loading feature, based on Linux kernel tilegx 64-bit implementation. [rth: Moved all of the implementation of atomic instructions to a later patch.] Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <BLU436-SMTP938552D42808AA60634582B9660@phx.gbl> Signed-off-by: Richard Henderson <rth@twiddle.net>
* maint: remove / fix many doubled wordsDaniel P. Berrange2015-09-111-1/+1
| | | | | | | | | | | | Many source files have doubled words (eg "the the", "to to", and so on). Most of these can simply be removed, but a couple were actual mis-spellings (eg "to to" instead of "to do"). There was even one triple word score "to to to" :-) Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
* linux-user: remove --enable-guest-base/--disable-guest-baseLaurent Vivier2015-08-241-2/+0Star
| | | | | | | | | | | | | | | | | | All tcg host architectures now support the guest base and as there is no real performance lost, it can be always enabled. Anyway, guest base use can be disabled lively by setting guest base to 0. CONFIG_USE_GUEST_BASE is defined as (USE_GUEST_BASE && USER_ONLY), it should have to be replaced by CONFIG_USER_ONLY in non CONFIG_USER_ONLY parts, but as some other parts are using !CONFIG_SOFTMMU I have chosen to use !CONFIG_SOFTMMU instead. Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <1440373328-9788-2-git-send-email-laurent@vivier.eu> Signed-off-by: Richard Henderson <rth@twiddle.net>
* linux-user: Use abi_ulong for TARGET_ELF_PAGESTARTYongbok Kim2015-06-151-1/+2
| | | | | | | | | | | TARGET_ELF_PAGESTART is required to use abi_ulong to correctly handle addresses for different target bits width. This patch fixes a problem when running a 64-bit user mode application on 32-bit host machines. Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: Add HWCAP for SH4Richard Henderson2015-06-121-0/+29
| | | | | | | | Only exposing FPU and LLSC as the only features supported by the translator. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* linux-user/elfload: use QTAILQ_FOREACH instead of open-coding itEmilio G. Cota2015-04-301-2/+1Star
| | | | | Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
* linux-user/elfload.c: Don't use _raw accessor functionsPeter Maydell2015-01-201-2/+5
| | | | | | | | | | | The _raw accessor functions are an implementation detail that has leaked out to some callsites. Use get_user_u64() instead of ldq_raw(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 1421334118-3287-5-git-send-email-peter.maydell@linaro.org
* linux-user: Do not subtract offset from end addressTom Musta2014-11-111-1/+1
| | | | | | | | | When computing the upper address of a program segment, do not subtract the offset from the virtual address; instead compute the sum of the virtual address and the memory size. Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* elf: take phdr offset into account when calculating the program load addressJonas Maebe2014-11-031-1/+1
| | | | | | | | The first program header does not necessarily start at offset 0. This change corresponds to what the Linux kernel does in load_elf_binary(). Signed-off-by: Jonas Maebe <jonas.maebe@elis.ugent.be> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: Let user specify random seedMagnus Reftel2014-11-031-1/+0Star
| | | | | | | | | | This patch introduces the -seed command line option and the QEMU_RAND_SEED environment variable for setting the random seed, which is used for the AT_RANDOM ELF aux entry. Signed-off-by: Magnus Reftel <reftel@spotify.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* translate-all.c: memory walker initial address miscalculationMikhail Ilyin2014-10-061-9/+9
| | | | | | | | | | | | The initial base address is miscalculated in walk_memory_regions(). It has to be shifted TARGET_PAGE_BITS more. Holder variables are extended to target_ulong size otherwise they don't fit for MIPS N32 (a 32-bit ABI with a 64-bit address space) and qemu won't compile. The issue led to incorrect debug output of memory maps and a mis-formed coredumped file. Signed-off-by: Mikhail Ilyin <m.ilin@samsung.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: Move get_ppc64_abiTom Musta2014-08-221-9/+0Star
| | | | | | | | | | The get_ppc64_abi is used to determine the ELF ABI (i.e. V1 or V2). This routine is currently implemented in the linux-user/elfload.c file but is useful in other scenarios. Move the routine to a more generally available location (linux-user/ppc/target_cpu.h). Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: Support HWCAP2 in PowerPCTom Musta2014-06-271-0/+31
| | | | | | | | Set bits in the AT_HWCAP2 entry of the AUXV. Specifically, detect and set bits for bctar, ISEL and ISA 2.07. Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* linux-user: Identify Addition Hardware Capabilities for PowerPCTom Musta2014-06-271-0/+8
| | | | | | | | Add VSX, DFP and ISA 2.06 to the bits identified in the AT_HWCAP entry of the AUXV. Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* linux-user: Correct AUXV Cache Line Sizes for PowerPCTom Musta2014-06-271-2/+3
| | | | | | | | | | | Set the AT_ICACHEBSIZE and AT_DCACHEBSIZE entries of the AUXV to match the CPU model's cache line sizes. This fixes memory clobbering problems on more recent Book 3s implementations; memset(p, 0, N) will use the dcbz instruction when N is sufficiently large and many of the newer server CPUs have cache lines sizes of 128 bytes. Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* User mode support for Linux ELF files with no section headerCraig Heffner2014-06-171-1/+0Star
| | | | | | | | | | | In user mode Linux, Qemu currently refuses to load ELF files that do not contain section headers (ehdr->e_shentsize == 0). Since section headers are not required in order to load an ELF file, simply removing the e_shentsize check in elf_check_ehdr() allows ELF binaries with no section headers to be run properly in user mode: Signed-off-by: Craig Heffner <cheffner@tacnetsol.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: Tell guest about big host page sizesAlexander Graf2014-06-161-1/+1
| | | | | | | | | | | | | | | | | | We tell the guest its page size via AUX vectors. The guest process then uses this page size as information on which boundaries it can mmap() things. However, if the host has a bigger page size granularity than the guest, it can not fulfill these mmap() requests - which falls apart when MAP_FIXED is passed to mmap. So in that case, let the guest know that we're running on a bigger page size granularity than the target would require. This fixes running qemu-ppc (TARGET_PAGE_SIZE=4k) on a 64k page size ppc64 host for me. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Richard Henderson <rth@twiddle.net>
* target-ppc: Confirm That .bss Pages Are ValidTom Musta2014-06-161-3/+4
| | | | | | | | | | | | | | The existing code does a check to ensure that a .bss region is properly mmap'd. When additional mmap is required, the (guest) pages are also validated. However, this code has a bug: when host page size is larger than target page size, it is possible for the .bss pages to already be (host) mapped but the guest .bss pages may not be valid. The check to mmap additional space is separated from the flagging of the target (guest) pages, thus ensuring that both aspects are done properly. Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* target-ppc: Support little-endian PPC64 in user mode.Doug Kwan2014-06-161-2/+15
| | | | | | | | | | Look at ELF header to determine ABI version on PPC64. This is required for executing the first instruction correctly. Also print correct machine name in uname() system call. Signed-off-by: Doug Kwan <dougkwan@google.com> Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* target-arm: A64: Implement two-register SHA instructionsPeter Maydell2014-06-091-0/+2
| | | | | | | | Implement the two-register SHA instruction group from the optional Crypto Extensions. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401458125-27977-10-git-send-email-peter.maydell@linaro.org
* target-arm: A64: Implement AES instructionsPeter Maydell2014-06-091-0/+1
| | | | | | | Implement the AES instructions from the optional Crypto Extensions. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401458125-27977-8-git-send-email-peter.maydell@linaro.org
* target-arm: A64: Implement CRC instructionsPeter Maydell2014-06-091-0/+1
| | | | | | | Implement the optional A64 CRC instructions. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401458125-27977-6-git-send-email-peter.maydell@linaro.org
* target-arm: A64: Use PMULL feature bit for PMULLPeter Maydell2014-06-091-1/+1
| | | | | | | Now that we have a separate ARM_FEATURE_V8_PMULL bit, use it for the A64 PMULL, not the AES feature bit. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* target-arm: add support for v8 VMULL.P64 instructionPeter Maydell2014-06-091-0/+1
| | | | | | | | | | | | | | Add support for the VMULL.P64 polynomial 64x64 to 128 bit multiplication instruction in the A32/T32 instruction sets; this is part of the v8 Crypto Extensions. To do this we have to move the neon_pmull_64_{lo,hi} helpers from helper-a64.c into neon_helper.c so they can be used by the AArch32 translator. Inspired-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401386724-26529-4-git-send-email-peter.maydell@linaro.org
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