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2023-03-07target/mips: Replace [g_]assert(0) -> g_assert_not_reached()Philippe Mathieu-Daudé
In order to avoid warnings such commit c0a6665c3c ("target/i386: Remove compilation errors when -Werror=maybe-uninitialized"), replace all assert(0) and g_assert(0) by g_assert_not_reached(). Remove any code following g_assert_not_reached(). See previous commit for rationale. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230221232520.14480-4-philmd@linaro.org>
2023-03-05target/mips: Fix trans_mult_acc returnRichard Henderson
Success from trans_* subroutines should be true. Fixes: 5fa38eedbd ("target/mips: Convert Vr54xx MACC* opcodes to decodetree") Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-05target/mips: Drop tcg_temp_free from mips16e_translate.c.incRichard Henderson
Translators are no longer required to free tcg temporaries. Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-01target/mips: Don't use tcg_temp_local_newRichard Henderson
Since tcg_temp_new is now identical, use that. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-01accel/tcg: Pass max_insn to gen_intermediate_code by pointerRichard Henderson
In preparation for returning the number of insns generated via the same pointer. Adjust only the prototypes so far. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-01target/mips: Replace `tb_pc()` with `tb->pc`Anton Johansson
Signed-off-by: Anton Johansson <anjo@rev.ng> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20230227135202.9710-20-anjo@rev.ng> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-02-08Drop duplicate #includeMarkus Armbruster
Tracked down with the help of scripts/clean-includes. Signed-off-by: Markus Armbruster <armbru@redhat.com> Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Greg Kurz <groug@kaod.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20230202133830.2152150-21-armbru@redhat.com>
2023-01-18bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plxPhilippe Mathieu-Daudé
The 'hwaddr' type is defined in "exec/hwaddr.h" as: hwaddr is the type of a physical address (its size can be different from 'target_ulong'). All definitions use the 'HWADDR_' prefix, except TARGET_FMT_plx: $ fgrep define include/exec/hwaddr.h #define HWADDR_H #define HWADDR_BITS 64 #define HWADDR_MAX UINT64_MAX #define TARGET_FMT_plx "%016" PRIx64 ^^^^^^ #define HWADDR_PRId PRId64 #define HWADDR_PRIi PRIi64 #define HWADDR_PRIo PRIo64 #define HWADDR_PRIu PRIu64 #define HWADDR_PRIx PRIx64 #define HWADDR_PRIX PRIX64 Since hwaddr's size can be *different* from target_ulong, it is very confusing to read one of its format using the 'TARGET_FMT_' prefix, normally used for the target_long / target_ulong types: $ fgrep TARGET_FMT_ include/exec/cpu-defs.h #define TARGET_FMT_lx "%08x" #define TARGET_FMT_ld "%d" #define TARGET_FMT_lu "%u" #define TARGET_FMT_lx "%016" PRIx64 #define TARGET_FMT_ld "%" PRId64 #define TARGET_FMT_lu "%" PRIu64 Apparently this format was missed during commit a8170e5e97 ("Rename target_phys_addr_t to hwaddr"), so complete it by doing a bulk-rename with: $ sed -i -e s/TARGET_FMT_plx/HWADDR_FMT_plx/g $(git grep -l TARGET_FMT_plx) Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20230110212947.34557-1-philmd@linaro.org> [thuth: Fix some warnings from checkpatch.pl along the way] Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-01-13target/mips: Restrict 'qapi-commands-machine.h' to system emulationPhilippe Mathieu-Daudé
Since commit a0e61807a3 ("qapi: Remove QMP events and commands from user-mode builds") we don't generate the "qapi-commands-machine.h" header in a user-emulation-only build. Extract the QMP functions from cpu.c (which is always compiled) to the new 'sysemu/mips-qmp-cmds.c' unit (which is only compiled when system emulation is selected). Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20221219211034.70491-4-philmd@linaro.org>
2023-01-13mips: Always include nanomips disassemblerPaolo Bonzini
Since the nanomips disassembler is not C++ code anymore, it need not depend on link_language == cpp. Always include it and remove the CONFIG_NANOMIPS_DIS symbol. Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20230110084942.299460-1-pbonzini@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2023-01-13mips: Remove support for trap and emulate KVMPaolo Bonzini
This support was limited to the Malta board, drop it. I do not have a machine that can run VZ KVM, so I am assuming that it works for -M malta as well. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20221221091718.71844-1-philmd@linaro.org>
2022-12-16target/mips: Convert to 3-phase resetPeter Maydell
Convert the mips CPU class to use 3-phase reset, so it doesn't need to use device_class_set_parent_reset() any more. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Edgar E. Iglesias <edgar@zeroasic.com> Reviewed-by: Taylor Simpson <tsimpson@quicinc.com> Message-id: 20221124115023.2437291-11-peter.maydell@linaro.org
2022-12-14cleanup: Tweak and re-run return_directly.cocciMarkus Armbruster
Tweak the semantic patch to drop redundant parenthesis around the return expression. Coccinelle drops a comment in hw/rdma/vmw/pvrdma_cmd.c; restored manually. Coccinelle messes up vmdk_co_create(), not sure why. Change dropped, will be done manually in the next commit. Line breaks in target/avr/cpu.h and hw/rdma/vmw/pvrdma_cmd.c tidied up manually. Whitespace in tools/virtiofsd/fuse_lowlevel.c tidied up manually. checkpatch.pl complains "return of an errno should typically be -ve" two times for hw/9pfs/9p-synth.c. Preexisting, the patch merely makes it visible to checkpatch.pl. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20221122134917.1217307-2-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2022-11-08target/mips: Don't check COP1X for 64 bit FP modeJiaxun Yang
Some implementations (i.e. Loongson-2F) may decide to implement a 64 bit FPU without implementing COP1X instructions. As the eligibility of 64 bit FP instructions is already determined by CP0St_FR, there is no need to check for COP1X again. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20221102165719.190378-1-jiaxun.yang@flygoat.com> [PMD: Add missing trailing parenthesis (buildfix)] Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-11-08target/mips: Disable DSP ASE for Octeon68XXJiaxun Yang
I don't have access to Octeon68XX hardware but according to my investigation Octeon never had DSP ASE support. As per "Cavium Networks OCTEON Plus CN50XX Hardware Reference Manual" CP0C3_DSPP is reserved bit and read as 0. Also I do have access to a Ubiquiti Edgerouter 4 which has Octeon CN7130 processor and I can confirm CP0C3_DSPP is read as 0 on that processor. Further more, in linux kernel: arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h cpu_has_dsp is overridden as 0. So I believe we shouldn't emulate DSP in QEMU as well. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru> Message-Id: <20221031132531.18122-4-jiaxun.yang@flygoat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-11-08target/mips: Enable LBX/LWX/* instructions for OcteonPavel Dovgalyuk
This patch changes condition and function name for enabling indexed load instructions for Octeon vCPUs. Octeons do not have DSP extension, but implement LBX-and-others. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <166728058455.229236.13834649461181619195.stgit@pasha-ThinkPad-X280> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-11-08target/mips: Cast offset field of Octeon BBIT to int16_tJiaxun Yang
As per "Cavium Networks OCTEON Plus CN50XX Hardware Reference Manual" offset field is signed 16 bit value. However arg_BBIT.offset is unsigned. We need to cast it as signed to do address calculation. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20221031132531.18122-3-jiaxun.yang@flygoat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-11-08target/mips: Set CP0St_{KX, SX, UX} for Loongson-2FJiaxun Yang
As per an unpublished document, in later reversion of chips CP0St_{KX, SX, UX} is not writeable and hardcoded to 1. Without those bits set, kernel is unable to access XKPHYS address segment. So just set them up on CPU reset. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20221031132531.18122-2-jiaxun.yang@flygoat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-10-26target/mips: Convert to tcg_ops restore_state_to_opcRichard Henderson
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-10-10kvm: allow target-specific accelerator propertiesPaolo Bonzini
Several hypervisor capabilities in KVM are target-specific. When exposed to QEMU users as accelerator properties (i.e. -accel kvm,prop=value), they should not be available for all targets. Add a hook for targets to add their own properties to -accel kvm, for now no such property is defined. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20220929072014.20705-3-chenyi.qiang@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-10-04accel/tcg: Introduce tb_pc and log_pcRichard Henderson
The availability of tb->pc will shortly be conditional. Introduce accessor functions to minimize ifdefs. Pass around a known pc to places like tcg_gen_code, where the caller must already have the value. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-10-04hw/core: Add CPUClass.get_pcRichard Henderson
Populate this new method for all targets. Always match the result that would be given by cpu_get_tb_cpu_state, as we will want these values to correspond in the logs. Reviewed-by: Taylor Simpson <tsimpson@quicinc.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> (target/sparc) Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- Cc: Eduardo Habkost <eduardo@habkost.net> (supporter:Machine core) Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> (supporter:Machine core) Cc: "Philippe Mathieu-Daudé" <f4bug@amsat.org> (reviewer:Machine core) Cc: Yanan Wang <wangyanan55@huawei.com> (reviewer:Machine core) Cc: Michael Rolnik <mrolnik@gmail.com> (maintainer:AVR TCG CPUs) Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com> (maintainer:CRIS TCG CPUs) Cc: Taylor Simpson <tsimpson@quicinc.com> (supporter:Hexagon TCG CPUs) Cc: Song Gao <gaosong@loongson.cn> (maintainer:LoongArch TCG CPUs) Cc: Xiaojuan Yang <yangxiaojuan@loongson.cn> (maintainer:LoongArch TCG CPUs) Cc: Laurent Vivier <laurent@vivier.eu> (maintainer:M68K TCG CPUs) Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> (reviewer:MIPS TCG CPUs) Cc: Aleksandar Rikalo <aleksandar.rikalo@syrmia.com> (reviewer:MIPS TCG CPUs) Cc: Chris Wulff <crwulff@gmail.com> (maintainer:NiosII TCG CPUs) Cc: Marek Vasut <marex@denx.de> (maintainer:NiosII TCG CPUs) Cc: Stafford Horne <shorne@gmail.com> (odd fixer:OpenRISC TCG CPUs) Cc: Yoshinori Sato <ysato@users.sourceforge.jp> (reviewer:RENESAS RX CPUs) Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> (maintainer:SPARC TCG CPUs) Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> (maintainer:TriCore TCG CPUs) Cc: Max Filippov <jcmvbkbc@gmail.com> (maintainer:Xtensa TCG CPUs) Cc: qemu-arm@nongnu.org (open list:ARM TCG CPUs) Cc: qemu-ppc@nongnu.org (open list:PowerPC TCG CPUs) Cc: qemu-riscv@nongnu.org (open list:RISC-V TCG CPUs) Cc: qemu-s390x@nongnu.org (open list:S390 TCG CPUs)
2022-09-13target/mips: Honour -semihosting-config userspace=onPeter Maydell
Honour the commandline -semihosting-config userspace=on option, instead of always permitting userspace semihosting calls in system emulation mode, by passing the correct value to the is_userspace argument of semihosting_enabled(). Note that this is a behaviour change: if the user wants to do semihosting calls from userspace they must now specifically enable them on the command line. MIPS semihosting is not implemented for linux-user builds. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220822141230.3658237-5-peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-09-06accel/tcg: Add pc and host_pc params to gen_intermediate_codeRichard Henderson
Pass these along to translator_loop -- pc may be used instead of tb->pc, and host_pc is currently unused. Adjust all targets at one time. Acked-by: Alistair Francis <alistair.francis@wdc.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Tested-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-08-08target/mips: Handle lock_user() failure in UHI_plog semihosting callPeter Maydell
Coverity notes that we forgot to check the error return from lock_user() in one place in the handling of the UHI_plog semihosting call. Add the missing error handling. report_fault() is rather brutal in that it will call abort(), but this is the same error-handling used in the rest of this file. Resolves: Coverity CID 1490684 Fixes: ea4210600db3c5 ("target/mips: Avoid qemu_semihosting_log_out for UHI_plog") Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220719191737.384744-1-peter.maydell@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-08-02target/mips: Advance pc after semihosting exceptionRichard Henderson
Delay generating the exception until after we know the insn length, and record that length in env->error_code. Fixes: 8ec7e3c53d4 ("target/mips: Use an exception for semihosting") Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1126 Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-12target/mips: Remove GET_TARGET_STRING and FREE_TARGET_STRINGRichard Henderson
Inline these macros into the only two callers. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220628111701.677216-9-richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-07-12target/mips: Simplify UHI_argnlen and UHI_argnRichard Henderson
With semihosting_get_arg, we already have a check vs argc, so there's no point replicating it -- just check the result vs NULL. Merge copy_argn_to_target into its caller. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220628111701.677216-8-richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-07-12target/mips: Use error_report for UHI_assertRichard Henderson
Always log the assert locally. Do not report_fault, but instead include the fact of the fault in the assertion. Don't bother freeing allocated strings before the abort(). Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220628111701.677216-6-richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-07-12target/mips: Avoid qemu_semihosting_log_out for UHI_plogRichard Henderson
Use semihost_sys_write and/or qemu_semihosting_console_write for implementing plog. When using gdbstub, copy the temp string below the stack so that gdb has a guest address from which to perform the log. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220628111701.677216-5-richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-07-12target/mips: Use semihosting/syscalls.hRichard Henderson
This separates guest file descriptors from host file descriptors, and utilizes shared infrastructure for integration with gdbstub. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220628111701.677216-4-richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-07-12target/mips: Drop link syscall from semihostingRichard Henderson
We don't implement it with _WIN32 hosts, and the syscall is missing from the gdb remote file i/o interface. Since we can't implement it universally, drop it. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220628111701.677216-3-richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-07-12target/mips: Create report_fault for semihostingRichard Henderson
The UHI specification does not have an EFAULT value, and further specifies that "undefined UHI operations should not return control to the target". So, log the error and abort. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220628111701.677216-2-richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-07-12target/mips: introduce Cavium Octeon CPU modelPavel Dovgalyuk
This patch adds Cavium Octeon 68XX vCPU which provides Octeon-specific instructions. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru> Message-Id: <165572673785.167724.7604881144978983510.stgit@pasha-ThinkPad-X280> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-07-12target/mips: implement Octeon-specific arithmetic instructionsPavel Dovgalyuk
This patch implements several Octeon-specific instructions: - BADDU - DMUL - EXTS/EXTS32 - CINS/CINS32 - POP/DPOP - SEQ/SEQI - SNE/SNEI Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <165572673245.167724.17377788816335619000.stgit@pasha-ThinkPad-X280> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-07-12target/mips: implement Octeon-specific BBIT instructionsPavel Dovgalyuk
This patch introduces Octeon-specific decoder and implements check-bit-and-jump instructions. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <165572672705.167724.16667636081912075906.stgit@pasha-ThinkPad-X280> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-07-12target/mips: introduce decodetree structure for Cavium Octeon extensionPavel Dovgalyuk
This patch adds decodetree for Cavium Octeon extension and an instruction set extension flag for using it in CPU models. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <165572672162.167724.13656301229517693806.stgit@pasha-ThinkPad-X280> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-06-28target/mips: Drop pread and pwrite syscalls from semihostingRichard Henderson
We don't implement it with _WIN32 hosts, and the syscalls are missing from the gdb remote file i/o interface. Since we can't implement them universally, drop them. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28target/mips: Add UHI errno valuesRichard Henderson
From the Unified Hosting Interface, MD01069 Reference Manual, version 1.1.6, 06 July 2015. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28target/mips: Use an exception for semihostingRichard Henderson
Within do_interrupt, we hold the iothread lock, which is required for Chardev access for the console, and for the round trip for use_gdb_syscalls(). Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Move exec/softmmu-semi.h to semihosting/softmmu-uaccess.hRichard Henderson
We have a subdirectory for semihosting; move this file out of exec. Rename to emphasize the contents are a replacement for the functions in linux-user/bsd-user uaccess.c. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-11target/mips: Add missing default cases for some nanoMIPS poolsStefan Pejic
Switch statements for the code segments that handle nanoMIPS instruction pools P.LL, P.SC, P.SHIFT, P.LS.S1, P.LS.E0, PP.LSXS do not have proper default case, resulting in not generating reserved instruction exception for certain illegal opcodes. Fix this by adding default cases for these switch statements that trigger reserved instruction exception. Signed-off-by: Stefan Pejic <stefan.pejic@syrmia.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220504110403.613168-7-stefan.pejic@syrmia.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-06-11target/mips: Fix handling of unaligned memory access for nanoMIPS ISADragan Mladjenovic
nanoMIPS ISA does not support unaligned memory access. Adjust DisasContext's default_tcg_memop_mask to reflect this. Signed-off-by: Dragan Mladjenovic <dragan.mladjenovic@syrmia.com> Signed-off-by: Stefan Pejic <stefan.pejic@syrmia.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220504110403.613168-6-stefan.pejic@syrmia.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-06-11target/mips: Fix emulation of nanoMIPS BNEC[32] instructionDragan Mladjenovic
If both rs and rt are the same register, the nanoMIPS instruction BNEC[32] rs, rt, address is equivalent to NOP (branch is not taken and there is no delay slot). This commit provides such behavior. Without this commit, this scenario results in an incorrect behavior. Signed-off-by: Dragan Mladjenovic <dragan.mladjenovic@syrmia.com> Signed-off-by: Stefan Pejic <stefan.pejic@syrmia.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220504110403.613168-5-stefan.pejic@syrmia.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-06-11target/mips: Fix emulation of nanoMIPS BPOSGE32C instructionDragan Mladjenovic
There are currently two problems related to the emulation of the instruction BPOSGE32C. The nanoMIPS instruction BPOSGE32C belongs to DSP R3 instructions (actually, as of now, it is the only instruction of DSP R3). The presence of DSP R3 instructions in QEMU is indicated by the flag MIPS_HFLAG_DSP_R3 (0x20000000). This flag is currently being properly set in CPUMIPSState's hflags (for example, for I7200 nanoMIPS CPU). However, it is not propagated to DisasContext's hflags, since the flag MIPS_HFLAG_DSP_R3 is not set in MIPS_HFLAG_TMASK (while similar flags MIPS_HFLAG_DSP_R2 and MIPS_HFLAG_DSP are set in this mask, and there is no problem in functioning check_dsp_r2(), check_dsp()). This means the function check_dsp_r3() currently does not work properly, and the emulation of BPOSGE32C can not work properly as well. Change MIPS_HFLAG_TMASK from 0x1F5807FF to 0x3F5807FF (logical OR with 0x20000000) to fix this. Additionally, check_cp1_enabled() is currently incorrectly called while emulating BPOSGE32C. BPOSGE32C is in the same pool (P.BR1) as FPU branch instruction BC1EQZC and BC1NEZC, but it not a part of FPU (CP1) instructions, and check_cp1_enabled() should not be involved while emulating BPOSGE32C. Rearrange invocations of check_cp1_enabled() within P.BR1 pool handling to affect only BC1EQZC and BC1NEZC emulation, and not BPOSGE32C emulation. Signed-off-by: Dragan Mladjenovic <dragan.mladjenovic@syrmia.com> Signed-off-by: Stefan Pejic <stefan.pejic@syrmia.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220504110403.613168-4-stefan.pejic@syrmia.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-06-11target/mips: Fix emulation of nanoMIPS EXTRV_S.H instructionDragan Mladjenovic
The field rs in the instruction EXTRV_S.H rt, ac, rs is specified in nanoMIPS documentation as opcode[20..16]. It is, however, erroneously considered as opcode[25..21] in the current QEMU implementation. In function gen_pool32axf_2_nanomips_insn(), the variable v0_t corresponds to rt/opcode[25..21], and v1_t corresponds to rs/opcode[20..16]), and v0_t is by mistake passed to the helper gen_helper_extr_s_h(). Use v1_t rather than v0_t in the invocation of gen_helper_extr_s_h() to fix this. Signed-off-by: Dragan Mladjenovic <dragan.mladjenovic@syrmia.com> Signed-off-by: Stefan Pejic <stefan.pejic@syrmia.com> Fixes: 8b3698b294 ("target/mips: Add emulation of DSP ASE for nanoMIPS") Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220504110403.613168-3-stefan.pejic@syrmia.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-06-11target/mips: Fix emulation of nanoMIPS MTHLIP instructionStefan Pejic
The field ac in nanoMIPS instruction MTHLIP rs, ac is specified in nanoMIPS documentation as opcode[15..14] (2 bits). However, in the current QEMU code, the corresponding argument passed to the helper gen_helper_mthlip() has the value of opcode[15..11] (5 bits). Right shift the value of this argument by three bits to fix this. Signed-off-by: Stefan Pejic <stefan.pejic@syrmia.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220504110403.613168-2-stefan.pejic@syrmia.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-06-11target/mips: Fix FTRUNC_S and FTRUNC_U trans helperNi Hui
Fix the FTRUNC_S and FTRUNC_U trans helper problem. Fixes: 5c5b64000c ("target/mips: Convert MSA 2RF instruction format to decodetree") Signed-off-by: nihui <shuizhuyuanluo@126.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220503144241.289239-1-shuizhuyuanluo@126.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-06-11target/mips: Fix store adress of high 64bit in helper_msa_st_b()Ni Hui
This patch fix the issue that helper_msa_st_b() write high 64bit data to where the low 64bit resides, leaving high 64bit undefined. Fixes: 68ad9260e0 ("target/mips: Use 8-byte memory ops for msa load/store") Signed-off-by: Ni Hui <shuizhuyuanluo@126.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220504023319.12923-1-shuizhuyuanluo@126.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-06-11target/mips: Do not treat msa INSERT as NOP when wd is zeroNi Hui
Only for msa COPY_U/COPY_S with wd zero, we treat it as NOP. Move this special rule into COPY_U and COPY_S trans function. Fixes: 97fe675519 ("target/mips: Convert MSA COPY_S and INSERT opcodes to decodetree") Signed-off-by: Ni Hui <shuizhuyuanluo@126.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220503130708.272850-4-shuizhuyuanluo@126.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
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