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2019-01-22linux-user: Fix compilation with clang 3.4Thomas Huth
Clang version 3.4.2 does not know the -Wpragmas option yet and bails out with an error when we try to disable it in linux-user/qemu.h. Fortunately, clang has a __has_warning() macro which allows us to add an explicit check for the option that we want to ignore. With that we can check for the availability of "-Waddress-of-packed-member" properly and do not need the "-Wpragmas" at all here. Fixes: 850d5e330a9c68cc998cecc02caf8a3c8d1ee8a3 Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Thomas Huth <thuth@redhat.com>
2019-01-11avoid TABs in files that only contain a fewPaolo Bonzini
Most files that have TABs only contain a handful of them. Change them to spaces so that we don't confuse people. disas, standard-headers, linux-headers and libdecnumber are imported from other projects and probably should be exempted from the check. Outside those, after this patch the following files still contain both 8-space and TAB sequences at the beginning of the line. Many of them have a majority of TABs, or were initially committed with all tabs. bsd-user/i386/target_syscall.h bsd-user/x86_64/target_syscall.h crypto/aes.c hw/audio/fmopl.c hw/audio/fmopl.h hw/block/tc58128.c hw/display/cirrus_vga.c hw/display/xenfb.c hw/dma/etraxfs_dma.c hw/intc/sh_intc.c hw/misc/mst_fpga.c hw/net/pcnet.c hw/sh4/sh7750.c hw/timer/m48t59.c hw/timer/sh_timer.c include/crypto/aes.h include/disas/bfd.h include/hw/sh4/sh.h libdecnumber/decNumber.c linux-headers/asm-generic/unistd.h linux-headers/linux/kvm.h linux-user/alpha/target_syscall.h linux-user/arm/nwfpe/double_cpdo.c linux-user/arm/nwfpe/fpa11_cpdt.c linux-user/arm/nwfpe/fpa11_cprt.c linux-user/arm/nwfpe/fpa11.h linux-user/flat.h linux-user/flatload.c linux-user/i386/target_syscall.h linux-user/ppc/target_syscall.h linux-user/sparc/target_syscall.h linux-user/syscall.c linux-user/syscall_defs.h linux-user/x86_64/target_syscall.h slirp/cksum.c slirp/if.c slirp/ip.h slirp/ip_icmp.c slirp/ip_icmp.h slirp/ip_input.c slirp/ip_output.c slirp/mbuf.c slirp/misc.c slirp/sbuf.c slirp/socket.c slirp/socket.h slirp/tcp_input.c slirp/tcpip.h slirp/tcp_output.c slirp/tcp_subr.c slirp/tcp_timer.c slirp/tftp.c slirp/udp.c slirp/udp.h target/cris/cpu.h target/cris/mmu.c target/cris/op_helper.c target/sh4/helper.c target/sh4/op_helper.c target/sh4/translate.c tcg/sparc/tcg-target.inc.c tests/tcg/cris/check_addo.c tests/tcg/cris/check_moveq.c tests/tcg/cris/check_swap.c tests/tcg/multiarch/test-mmap.c ui/vnc-enc-hextile-template.h ui/vnc-enc-zywrle.h util/envlist.c util/readline.c The following have only TABs: bsd-user/i386/target_signal.h bsd-user/sparc64/target_signal.h bsd-user/sparc64/target_syscall.h bsd-user/sparc/target_signal.h bsd-user/sparc/target_syscall.h bsd-user/x86_64/target_signal.h crypto/desrfb.c hw/audio/intel-hda-defs.h hw/core/uboot_image.h hw/sh4/sh7750_regnames.c hw/sh4/sh7750_regs.h include/hw/cris/etraxfs_dma.h linux-user/alpha/termbits.h linux-user/arm/nwfpe/fpopcode.h linux-user/arm/nwfpe/fpsr.h linux-user/arm/syscall_nr.h linux-user/arm/target_signal.h linux-user/cris/target_signal.h linux-user/i386/target_signal.h linux-user/linux_loop.h linux-user/m68k/target_signal.h linux-user/microblaze/target_signal.h linux-user/mips64/target_signal.h linux-user/mips/target_signal.h linux-user/mips/target_syscall.h linux-user/mips/termbits.h linux-user/ppc/target_signal.h linux-user/sh4/target_signal.h linux-user/sh4/termbits.h linux-user/sparc64/target_syscall.h linux-user/sparc/target_signal.h linux-user/x86_64/target_signal.h linux-user/x86_64/termbits.h pc-bios/optionrom/optionrom.h slirp/mbuf.h slirp/misc.h slirp/sbuf.h slirp/tcp.h slirp/tcp_timer.h slirp/tcp_var.h target/i386/svm.h target/sparc/asi.h target/xtensa/core-dc232b/xtensa-modules.inc.c target/xtensa/core-dc233c/xtensa-modules.inc.c target/xtensa/core-de212/core-isa.h target/xtensa/core-de212/xtensa-modules.inc.c target/xtensa/core-fsf/xtensa-modules.inc.c target/xtensa/core-sample_controller/core-isa.h target/xtensa/core-sample_controller/xtensa-modules.inc.c target/xtensa/core-test_kc705_be/core-isa.h target/xtensa/core-test_kc705_be/xtensa-modules.inc.c tests/tcg/cris/check_abs.c tests/tcg/cris/check_addc.c tests/tcg/cris/check_addcm.c tests/tcg/cris/check_addoq.c tests/tcg/cris/check_bound.c tests/tcg/cris/check_ftag.c tests/tcg/cris/check_int64.c tests/tcg/cris/check_lz.c tests/tcg/cris/check_openpf5.c tests/tcg/cris/check_sigalrm.c tests/tcg/cris/crisutils.h tests/tcg/cris/sys.c tests/tcg/i386/test-i386-ssse3.c ui/vgafont.h Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20181213223737.11793-3-pbonzini@redhat.com> Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Eric Blake <eblake@redhat.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11remove space-tab sequencesPaolo Bonzini
There are not many, and they are all simple mistakes that ended up being committed. Remove them. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20181213223737.11793-2-pbonzini@redhat.com> Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11qemu/queue.h: leave head structs anonymous unless necessaryPaolo Bonzini
Most list head structs need not be given a name. In most cases the name is given just in case one is going to use QTAILQ_LAST, QTAILQ_PREV or reverse iteration, but this does not apply to lists of other kinds, and even for QTAILQ in practice this is only rarely needed. In addition, we will soon reimplement those macros completely so that they do not need a name for the head struct. So clean up everything, not giving a name except in the rare case where it is necessary. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-10Merge remote-tracking branch ↵Peter Maydell
'remotes/vivier2/tags/linux-user-for-4.0-pull-request' into staging Minor linux-user update (2019-01-10) Fixes LTP tests pwrite03 and pwrite03_64 # gpg: Signature made Thu 10 Jan 2019 08:37:04 GMT # gpg: using RSA key F30C38BD3F2FBE3C # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" # gpg: aka "Laurent Vivier <laurent@vivier.eu>" # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" # Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * remotes/vivier2/tags/linux-user-for-4.0-pull-request: linux-user: make pwrite64/pread64(fd, NULL, 0, offset) return 0 Add getsockopt for settable SOL_IPV6 options Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-01-10linux-user: make pwrite64/pread64(fd, NULL, 0, offset) return 0Peter Maydell
Linux returns success if pwrite64() or pread64() are called with a zero length NULL buffer, but QEMU was returning -TARGET_EFAULT. This is the same bug that we fixed in commit 58cfa6c2e6eb51b23cc9 for the write syscall, and long before that in 38d840e6790c29f59 for the read syscall. Fixes: https://bugs.launchpad.net/qemu/+bug/1810433 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20190108184900.9654-1-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-01-10Add getsockopt for settable SOL_IPV6 optionsTom Deseyn
Signed-off-by: Tom Deseyn <tom.deseyn@gmail.com> Message-Id: <20181213130611.7496-1-tom.deseyn@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-01-09target/ppc: move FP and VMX registers into aligned vsr register arrayMark Cave-Ayland
The VSX register array is a block of 64 128-bit registers where the first 32 registers consist of the existing 64-bit FP registers extended to 128-bit using new VSR registers, and the last 32 registers are the VMX 128-bit registers as show below: 64-bit 64-bit +--------------------+--------------------+ | FP0 | | VSR0 +--------------------+--------------------+ | FP1 | | VSR1 +--------------------+--------------------+ | ... | ... | ... +--------------------+--------------------+ | FP30 | | VSR30 +--------------------+--------------------+ | FP31 | | VSR31 +--------------------+--------------------+ | VMX0 | VSR32 +-----------------------------------------+ | VMX1 | VSR33 +-----------------------------------------+ | ... | ... +-----------------------------------------+ | VMX30 | VSR62 +-----------------------------------------+ | VMX31 | VSR63 +-----------------------------------------+ In order to allow for future conversion of VSX instructions to use TCG vector operations, recreate the same layout using an aligned version of the existing vsr register array. Since the old fpr and avr register arrays are removed, the existing callers must also be updated to use the correct offset in the vsr register array. This also includes switching the relevant VMState fields over to using subarrays to make sure that migration is preserved. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2018-12-26linux-user: Add safe_syscall for riscv64 hostRichard Henderson
Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26linux-user: Add host dependency for RISC-V 64-bitAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <9d777f619840a8dd8e4f3834dcfc3bd28e052ccd.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26linux-user: Add host dependency for RISC-V 32-bitAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <76f8f9383a766dbcade883e897dec8cfef669799.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-11-17linux-user: Update MIPS specific prctl() implementationStefan Markovic
Perform needed checks before actual prctl() PR_SET_FP_MODE and PR_GET_FP_MODE work based on kernel implementation. Also, update necessary hflags. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
2018-11-15linux-user/sparc/signal.c: Remove dead codePeter Maydell
Coverity complains (CID 1390847) about some dead code in do_sigreturn(). This is an if (err) clause that can never be true, copied from the kernel (where __get_user returns an error). The one code path that could report an error is in the currently commented-out pseudocode for handling FPU register restoring, so move the if into that comment (and fix the broken indent in the comment in the process). (The new position for the error check is also the semantically correct one -- we should not restore the signal mask from the signal frame if we get an error here, so the check must be done before set_sigmask(), not after.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-id: 20181115114616.26265-1-peter.maydell@linaro.org
2018-11-12linux-user: Add support for SO_REUSEPORTYunqiang Su
Add support for SO_REUSEPORT, including strace support. SO_REUSEPORT was introduced relatively recently, since Linux 3.9, so use '#if defined SO_REUSEPORT'. Signed-off-by: Yunqiang Su <ysu@wavecomp.com> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <1540904108-30873-4-git-send-email-aleksandar.markovic@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-11-12linux-user: Clean up nios2 main loop signal handlingPeter Maydell
The nios2 main loop code's code does some odd things with gdb_handlesig() that no other target CPU does: it has some signals that are delivered to gdb and only to gdb. Stop doing this, and instead behave like all the other targets: * a trap instruction becomes a SIGTRAP * an unhandled exception type returned from cpu_exec() causes us to abort(), not to try to hand gdb a SIGILL This fixes in passing Coverity issue CID 1390853, which was a complaint that the old code failed to check the return value from gdb_handlesig(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20181019174958.26616-3-peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> [lv: removed gdbsig unused variable] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-11-12linux-user: Don't call gdb_handlesig() before queue_signal()Peter Maydell
The CPU main-loop routines for linux-user generally call gdb_handlesig() when they're about to queue a SIGTRAP signal. This is wrong, because queue_signal() will cause us to pend a signal, and process_pending_signals() will then call gdb_handlesig() itself. So the effect is that we notify gdb of the SIGTRAP, and then if gdb says "OK, continue with signal X" we will incorrectly notify gdb of the signal X as well. We don't do this double-notify for anything else, only SIGTRAP. Remove this unnecessary and incorrect code from all the targets except for nios2 (whose main loop is doing something different and broken, and will be handled in a separate patch). This bug only manifests if the user responds to the reported SIGTRAP using "signal SIGFOO" rather than "continue"; since the latter is the overwhelmingly common thing to do after a breakpoint most people won't have hit this. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20181019174958.26616-2-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-11-12linux-user: Remove dead error-checking codePeter Maydell
Remove some dead code spotted by Coverity (CID 1009855, 1390854, 1390847). The underlying cause in all these cases is the same: QEMU's put_user operations can't result in errors, but the kernel's equivalent does. So when code was copied from the kernel signal-frame-setup/teardown code, checks on error flags that were needed in the kernel became dead code for us. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20181019161715.12122-1-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-11-01target/m68k: use EXCP_ILLEGAL instead of EXCP_UNSUPPORTEDLaurent Vivier
Coldfire defines an "Unsupported instruction" exception if execution of a valid instruction is attempted but the required hardware is not present in the processor. We use it with instructions that are in fact undefined or illegal, and the exception expected in this case by the kernel is the illegal exception, so this patch fixes that. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20181030165554.5761-1-laurent@vivier.eu>
2018-10-31Merge remote-tracking branch 'remotes/xtensa/tags/20181030-xtensa' into stagingPeter Maydell
target/xtensa: support for bFLT binaries - add support for bFLT binaries for target/xtensa - fix per-architecture target_flat.h customization - fix initial stack pointer for bFLT # gpg: Signature made Tue 30 Oct 2018 18:27:42 GMT # gpg: using RSA key 51F9CC91F83FA044 # gpg: Good signature from "Max Filippov <filippov@cadence.com>" # gpg: aka "Max Filippov <max.filippov@cogentembedded.com>" # gpg: aka "Max Filippov <jcmvbkbc@gmail.com>" # Primary key fingerprint: 2B67 854B 98E5 327D CDEB 17D8 51F9 CC91 F83F A044 * remotes/xtensa/tags/20181030-xtensa: linux-user/flatload: fix initial stack pointer alignment linux-user: xtensa: enable bFLT support Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-30linux-user/flatload: fix initial stack pointer alignmentMax Filippov
Stack pointer alignment code incorrectly adds stack_size to sp instead of subtracting it. It also does not take flat_argvp_envp_on_stack() into account when calculating stack_size. This results in initial stack pointer misalignment with certain set of command line arguments and environment variables and correct alignment for the same binary with a different set of arguments. This misalignment causes failures in the following tests in the testsuite of gcc built for xtensa uclinux: gcc.dg/torture/vshuf-v64qi.c gcc.dg/torture/vshuf-v8sf.c gcc.dg/torture/vshuf-v8si.c Reviewed-by: Laurent Vivier <lvivier@redhat.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-10-30Merge remote-tracking branch ↵Peter Maydell
'remotes/vivier2/tags/qemu-trivial-for-3.1-pull-request' into staging QEMU trivial patches collected between June and October 2018 (Thank you to Thomas Huth) v2: fix 32bit build with updated patch (v3) from Philippe Mathieu-Daudé built in a 32bit debian sid chroot # gpg: Signature made Tue 30 Oct 2018 11:23:01 GMT # gpg: using RSA key F30C38BD3F2FBE3C # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" # gpg: aka "Laurent Vivier <laurent@vivier.eu>" # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" # Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * remotes/vivier2/tags/qemu-trivial-for-3.1-pull-request: milkymist-minimac2: Use qemu_log_mask(GUEST_ERROR) instead of error_report ppc: move at24c to its own CONFIG_ symbol hw/intc/gicv3: Remove useless parenthesis around DIV_ROUND_UP macro hw/pci-host: Remove useless parenthesis around DIV_ROUND_UP macro tests/bios-tables-test: Remove an useless cast xen: Use the PCI_DEVICE macro qobject: Catch another straggler for use of qdict_put_str() configure: Support pkg-config for zlib tests: Fix typos in comments and help message (found by codespell) cpu.h: fix a typo in comment linux-user: fix comment s/atomic_write/atomic_set/ qemu-iotests: make 218 executable scripts/qemu.py: remove trailing quotes on docstring scripts/decodetree.py: remove unused imports docs/devel/testing.rst: add missing newlines after code block qemu-iotests: fix filename containing checks tests/tcg/README: fix location for lm32 tests memory.h: fix typos in comments vga_int: remove unused function protype configs/alpha: Remove unused CONFIG_PARALLEL_ISA switch Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-29linux-user: Add prctl() PR_SET_FP_MODE and PR_GET_FP_MODE implementationsStefan Markovic
Implement MIPS specific prctl() PR_SET_FP_MODE and PR_GET_FP_MODE emulation. Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-10-29linux-user: Determine the desired FPU mode from MIPS.abiflagsStefan Markovic
Floating-point mode is calculated from MIPS.abiflags FP ABI value (based on kernel implementation). Illegal combinations are rejected. Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-10-29linux-user: Read and set FP ABI value from MIPS abiflagsStefan Markovic
Set fp_abi and interp_fp_abi values to current fp_abi value read from MIPS.abiflags. Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-10-29linux-user: Extract MIPS abiflags from ELF fileStefan Markovic
Read MIPS.abiflags section from ELF file into Mips_elf_abiflags_v0 struct. Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-10-29linux-user: Extend image_info struct with MIPS fp_abi and interp_fp_abi fieldsStefan Markovic
Add MIPS specific image_info struct fields fp_abi and interp_fp_abi to store executable and interpreter fp_abi values (based on kernel struct arch_elf_state in mips/include/asm/elf.h). Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-10-26linux-user: fix comment s/atomic_write/atomic_set/Emilio G. Cota
Signed-off-by: Emilio G. Cota <cota@braap.org> Message-Id: <20180811211011.6277-1-cota@braap.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-10-24Merge remote-tracking branch ↵Peter Maydell
'remotes/amarkovic/tags/mips-queue-oct-2018-part-2-v2' into staging MIPS queue for October 2018 - part 2 - v2 # gpg: Signature made Wed 24 Oct 2018 14:22:54 BST # gpg: using RSA key D4972A8967F75A65 # gpg: Good signature from "Aleksandar Markovic <amarkovic@wavecomp.com>" # 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: 8526 FBF1 5DA3 811F 4A01 DD75 D497 2A89 67F7 5A65 * remotes/amarkovic/tags/mips-queue-oct-2018-part-2-v2: (33 commits) target/mips: Fix decoding of ALIGN and DALIGN instructions target/mips: Fix the title of translate.c linux-user/mips: Recognize the R5900 CPU model target/mips: Define the R5900 CPU tests/tcg/mips: Add tests for R5900 DIVU1 tests/tcg/mips: Add tests for R5900 DIV1 tests/tcg/mips: Add tests for R5900 MTLO1 and MTHI1 tests/tcg/mips: Add tests for R5900 MFLO1 and MFHI1 tests/tcg/mips: Add tests for R5900 three-operand MULTU1 tests/tcg/mips: Add tests for R5900 three-operand MULT1 tests/tcg/mips: Add tests for R5900 three-operand MULTU tests/tcg/mips: Add tests for R5900 three-operand MULT target/mips: Make R5900 DMULT[U], DDIV[U], LL[D] and SC[D] user only target/mips: Support R5900 MOVN, MOVZ and PREF instructions from MIPS IV target/mips: Support R5900 DIV1 and DIVU1 instructions target/mips: Support R5900 MFLO1, MTLO1, MFHI1 and MTHI1 instructions target/mips: Support R5900 three-operand MULT1 and MULTU1 instructions target/mips: Support R5900 three-operand MULT and MULTU instructions target/mips: Add a placeholder for R5900 MMI3 instruction subclass target/mips: Add a placeholder for R5900 MMI2 instruction subclass ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-24linux-user/mips: Recognize the R5900 CPU modelFredrik Noring
This kind of ELF for the R5900 relies on an IEEE 754-1985 compliant FPU. The R5900 FPU hardware is noncompliant and it is therefore emulated in software by the Linux kernel. QEMU emulates a compliant FPU accordingly. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Signed-off-by: Fredrik Noring <noring@nocrew.org> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
2018-10-24target/arm: Convert v8.2-fp16 from feature bit to aa64pfr0 testRichard Henderson
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20181016223115.24100-9-richard.henderson@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-24target/arm: Convert sve from feature bit to aa64pfr0 testRichard Henderson
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20181016223115.24100-8-richard.henderson@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-24target/arm: Convert division from feature bits to isar0 testsRichard Henderson
Both arm and thumb2 division are controlled by the same ISAR field, which takes care of the arm implies thumb case. Having M imply thumb2 division was wrong for cortex-m0, which is v6m and does not have thumb2 at all, much less thumb2 division. Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20181016223115.24100-5-richard.henderson@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-24target/arm: Convert v8 extensions from feature bits to isar testsRichard Henderson
Most of the v8 extensions are self-contained within the ISAR registers and are not implied by other feature bits, which makes them the easiest to convert. Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20181016223115.24100-4-richard.henderson@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-19linux-user: xtensa: enable bFLT supportMax Filippov
- request bflt support in configure; - implement custom linux-user/xtensa/target_flat.h that doesn't put envp on stack; - fix #include "target_flat.h" in flatload.c so that it first search for arch-customized version of the header. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-10-19linux-user: Implement special usbfs ioctls.Cortland Tölva
Userspace submits a USB Request Buffer to the kernel, optionally discards it, and finally reaps the URB. Thunk buffers from target to host and back. Tested by running an i386 scanner driver on ARMv7 and by running the PowerPC lsusb utility on x86_64. The discardurb ioctl is not exercised in these tests. Signed-off-by: Cortland Tölva <cst@tolva.net> Message-Id: <20181008163521.17341-4-cst@tolva.net> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-10-19linux-user: Define ordinary usbfs ioctls.Cortland Tölva
Provide ioctl definitions for the generic thunk mechanism to convert most usbfs calls. Calculate arg size at runtime. Signed-off-by: Cortland Tölva <cst@tolva.net> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20181008163521.17341-3-cst@tolva.net> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-10-19Merge remote-tracking branch ↵Peter Maydell
'remotes/vivier2/tags/linux-user-for-3.1-pull-request' into staging Add a workaround for clang bug and remove misleading comment (sparc) # gpg: Signature made Thu 18 Oct 2018 20:00:17 BST # gpg: using RSA key F30C38BD3F2FBE3C # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" # gpg: aka "Laurent Vivier <laurent@vivier.eu>" # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" # Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * remotes/vivier2/tags/linux-user-for-3.1-pull-request: linux-user/sparc/signal.c: Remove unnecessary comment linux-user: Suppress address-of-packed-member warnings in __get/put_user_e Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-18linux-user: Add infrastructure for handling MIPS-specific prctl()Stefan Markovic
Add infrastructure for handling MIPS-specific prctl(). This is, for now, just an empty placeholder. The real handling will be implemented in subsequent patches. Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
2018-10-18linux-user: Add MIPS-specific prctl() optionsStefan Markovic
Add MIPS-specific prctl() options TARGET_PR_SET_FP_MODE and TARGET_PR_SET_FP_MODE. These values are essentially copied from linux kernel header include/uapi/linux/prctl.h. This is done in a way consistent with a similar case of aarch64-specific prctl() options TARGET_PR_SVE_SET_VL and TARGET_PR_SVE_GET_VL. Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
2018-10-18linux-user/sparc/signal.c: Remove unnecessary commentPeter Maydell
Remove a comment suggesting that we need to call tb_flush() after writing the SPARC signal frame trampoline insns. This isn't necessary in QEMU, because (even if the guest architecture requires explicit icache maintenance) we ensure that memory writes result in invalidation of translated code from that memory. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20181009184017.15675-1-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-10-18linux-user: Suppress address-of-packed-member warnings in __get/put_user_ePeter Maydell
Our __get_user_e() and __put_user_e() macros cause newer versions of clang to generate false-positive -Waddress-of-packed-member warnings if they are passed the address of a member of a packed struct (see https://bugs.llvm.org/show_bug.cgi?id=39113). Suppress these using the _Pragma() operator. Unfortunately _Pragma() support in gcc is broken in some gcc versions and in some usage contexts, so we limit the pragma usage here to clang. To put in the pragmas we need to convert the macros from expressions to statements, but all the callsites effectively treat them as statements already so this is OK. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20181009161814.21257-1-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-09-28Merge remote-tracking branch ↵Peter Maydell
'remotes/vivier2/tags/linux-user-for-3.1-pull-request' into staging - some fixes for setrlimit() and write() - fixes ELF loader when host page size is greater than target page size - add SO_LINGER to getsockopt()/setsockopt() - move TargetFdTrans from syscall.c v2: add "#include <linux/netlink.h>" in linux-user/fd-trans.c # gpg: Signature made Tue 25 Sep 2018 21:51:13 BST # gpg: using RSA key F30C38BD3F2FBE3C # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" # gpg: aka "Laurent Vivier <laurent@vivier.eu>" # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" # Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * remotes/vivier2/tags/linux-user-for-3.1-pull-request: linux-user: do setrlimit selectively linux-user: write(fd, NULL, 0) parity with linux's treatment of same linux-user: elf: mmap all the target-pages of hostpage for data segment linux-user: add SO_LINGER to {g,s}etsockopt linux-user: move TargetFdTrans functions to their own file Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-09-25linux-user: do setrlimit selectivelyMax Filippov
setrlimit guest calls that affect memory resources (RLIMIT_{AS,DATA,STACK}) may interfere with QEMU internal memory management. They may result in QEMU lockup because mprotect call in page_unprotect would fail with ENOMEM error code, causing infinite loop of SIGSEGV. E.g. it happens when running libstdc++ testsuite for xtensa target on x86_64 host. Don't call host setrlimit for memory-related resources. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Message-Id: <20180917181314.22551-1-jcmvbkbc@gmail.com> [lv: rebase on master] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-09-25linux-user: write(fd, NULL, 0) parity with linux's treatment of sameTony Garnock-Jones
Bring linux-user write(2) handling into line with linux for the case of a 0-byte write with a NULL buffer. Based on a patch originally written by Zhuowei Zhang. Addresses https://bugs.launchpad.net/qemu/+bug/1716292. >From Zhuowei Zhang's patch (https://lists.gnu.org/archive/html/qemu-devel/2017-09/msg08073.html): Linux returns success for the special case of calling write with a zero-length NULL buffer: compiling and running int main() { ssize_t ret = write(STDOUT_FILENO, NULL, 0); fprintf(stderr, "write returned %ld\n", ret); return 0; } gives "write returned 0" when run directly, but "write returned -1" in QEMU. This commit checks for this situation and returns success if found. Subsequent discussion raised the following questions (and my answers): - Q. Should TARGET_NR_read pass through to safe_read in this situation too? A. I'm wary of changing unrelated code to the specific problem I'm addressing. TARGET_NR_read is already consistent with Linux for this case. - Q. Do pread64/pwrite64 need to be changed similarly? A. Experiment suggests not: both linux and linux-user yield -1 for NULL 0-length reads/writes. Signed-off-by: Tony Garnock-Jones <tonygarnockjones@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180908182205.GB409@mornington.dcs.gla.ac.uk> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-09-25linux-user: elf: mmap all the target-pages of hostpage for data segmentShivaprasad G Bhat
If the hostpage size is greater than the TARGET_PAGESIZE, the target-pages of size TARGET_PAGESIZE are marked valid only till the length requested during the elfload. The glibc attempts to consume unused space in the last page of data segment(__libc_memalign() in elf/dl-minimal.c). If PT_LOAD p_align is greater than or equal to hostpage size, the GLRO(dl_pagesize) is actually the host pagesize as set in the auxillary vectors. So, there is no explicit mmap request for the remaining target-pages on the last hostpage. The glibc assumes that particular space as available and subsequent attempts to use those addresses lead to crash as the target_mmap has not marked them valid for those target-pages. The issue is seen when trying to chroot to 16.04-x86_64 ubuntu on a PPC64 host where the fork fails to access the thread_id as it is allocated on a page not marked valid. The recent glibc doesn't have checks for thread-id in fork, but the issue can manifest somewhere else, none the less. The fix here is to map all the target-pages of the hostpage during the elfload if the p_align is greater than or equal to hostpage size, for data segment to allow the glibc for proper consumption. Signed-off-by: Shivaprasad G Bhat <sbhat@linux.vnet.ibm.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <153553435604.51992.5640085189104207249.stgit@lep8c.aus.stglabs.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-09-25linux-user: add SO_LINGER to {g,s}etsockoptCarlo Marcelo Arenas Belón
Original implementation for setsockopt by Chen Gang[1]; all bugs mine, including removing assignment for optname which hopefully makes the logic easier to follow and moving some variables to make the code more selfcontained. [1] http://patchwork.ozlabs.org/patch/565659/ Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com> Co-Authored-By: Chen Gang <gang.chen.5i5j@gmail.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180824085601.6259-1-carenas@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-09-25linux-user: move TargetFdTrans functions to their own fileLaurent Vivier
This will ease to move out syscall functions from syscall.c Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180823222215.13781-1-laurent@vivier.eu>
2018-09-07target-ppc: Extend HWCAP2 bits for ISA 3.0Sandipan Das
This adds the HWCAP2 bit to detect if a linux user process is running on an ISA 3.0 compliant cpu like POWER9. This can be verified using a simple test program that prints the value in the auxiliary vector for AT_HWCAP2 as shown below. Before: $ qemu-ppc64le -cpu power8 test 0x8c000000 $ qemu-ppc64le -cpu power9 test 0x8c000000 After: $ qemu-ppc64le -cpu power8 test 0x8c000000 $ qemu-ppc64le -cpu power9 test 0x8c800000 Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2018-08-24elf: Don't check FCR31_NAN2008 bit for nanoMIPSAleksandar Markovic
nanoMIPS is always NaN2008 compliant, and rules for checking FCR31's NAN2008 bit are obsoleted. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-08-24elf: Relax MIPS' elf_check_arch() to accept EM_NANOMIPS tooAleksandar Markovic
Starting from nanoMIPS introduction, machine variant can be EM_MIPS or EM_NANOMIPS. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
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