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2023-10-18linux-user: Remap guest SIGABRTRichard Henderson1-7/+35
Distinguish host SIGABRT from guest SIGABRT by mapping the guest signal onto one of the host RT signals. This prevents a cycle by which a host assertion failure is caught and handled by host_signal_handler, queued for the guest, and then we attempt to continue past the host abort. What happens next depends on the host libc, but is neither good nor helpful. Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-18linux-user: Detect and report host SIGILL, SIGFPE, SIGTRAPRichard Henderson1-1/+43
These signals, when not spoofed via kill(), are always bugs. Use die_from_signal to report this sensibly. Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-18linux-user: Split out host_sig{segv,bus}_handlerRichard Henderson1-60/+85
Make host_signal_handler slightly easier to read. Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-18linux-user: Simplify signal_initRichard Henderson1-20/+22
Install the host signal handler at the same time we are probing the target signals for SIG_IGN/SIG_DFL. Ignore unmapped target signals. Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-18linux-user: Map unsupported signals to an out-of-bounds valueRichard Henderson1-34/+38
Do not return a valid signal number in one domain when given an invalid signal number in the other domain. Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-18linux-user: Only register handlers for core_dump_signal by defaultRichard Henderson1-29/+14
The set of fatal signals is really immaterial. If one arrives, and is unhandled, then the qemu process dies and the parent gets the correct signal. It is only for those signals which we would like to perform a guest core dump instead of a host core dump that we need to catch. Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-18linux-user: Detect and report host crashesHelge Deller1-6/+63
If there is an internal program error in the qemu source code which raises SIGSEGV or SIGBUS, we currently assume the signal belongs to the guest. With an artificial error introduced, we will now print QEMU internal SIGSEGV {code=MAPERR, addr=(nil)} Signed-off-by: Helge Deller <deller@gmx.de> Message-Id: <20230812164314.352131-1-deller@gmx.de> [rth: Use in_code_gen_buffer and die_with_signal; drop backtrace] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-18linux-user: Exit not abort in die_with_backtraceRichard Henderson1-1/+1
This line is supposed to be unreachable, but if we're going to have it at all, SIGABRT via abort() is subject to the same signal peril that created this function in the first place. We can _exit immediately without peril. Acked-by: Helge Deller <deller@gmx.de> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-18linux-user: Split out die_with_signalRichard Henderson1-24/+28
Because we trap so many signals for use by the guest, we have to take extra steps to exit properly. Acked-by: Helge Deller <deller@gmx.de> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-18linux-user: Propagate failure in mmap_reserve_or_unmap back to target_munmapRichard Henderson1-13/+17
Do not assert success, but return any failure received. Additionally, fix the method of earlier error return in target_munmap. Reported-by: Andreas Schwab <schwab@suse.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-18linux-user/elfload: Enable LSX/LASX in HWCAP for LoongArchJiajie Chen1-0/+8
Since support for LSX and LASX is landed in QEMU recently, we can update HWCAPS accordingly. Signed-off-by: Jiajie Chen <c@jia.je> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20231001085315.1692667-1-c@jia.je> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-18linux-user/sh4: Fix crashes on signal deliveryMikulas Patocka1-0/+8
sh4 uses gUSA (general UserSpace Atomicity) to provide atomicity on CPUs that don't have atomic instructions. A gUSA region that adds 1 to an atomic variable stored in @R2 looks like this: 4004b6: 03 c7 mova 4004c4 <gusa+0x10>,r0 4004b8: f3 61 mov r15,r1 4004ba: 09 00 nop 4004bc: fa ef mov #-6,r15 4004be: 22 63 mov.l @r2,r3 4004c0: 01 73 add #1,r3 4004c2: 32 22 mov.l r3,@r2 4004c4: 13 6f mov r1,r15 R0 contains a pointer to the end of the gUSA region R1 contains the saved stack pointer R15 contains negative length of the gUSA region When this region is interrupted by a signal, the kernel detects if R15 >= -128U. If yes, the kernel rolls back PC to the beginning of the region and restores SP by copying R1 to R15. The problem happens if we are interrupted by a signal at address 4004c4. R15 still holds the value -6, but the atomic value was already written by an instruction at address 4004c2. In this situation we can't undo the gUSA. The function unwind_gusa does nothing, the signal handler attempts to push a signal frame to the address -6 and crashes. This patch fixes it, so that if we are interrupted at the last instruction in a gUSA region, we copy R1 to R15 to restore the correct stack pointer and avoid crashing. There's another bug: if we are interrupted in a delay slot, we save the address of the instruction in the delay slot. We must save the address of the previous instruction. Cc: qemu-stable@nongnu.org Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Reviewed-by: Yoshinori Sato <ysato@users.sourcefoege.jp> Message-Id: <b16389f7-6c62-70b7-59b3-87533c0bcc@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-18linux-user/mips: fix abort on integer overflowMikulas Patocka1-1/+3
QEMU mips userspace emulation crashes with "qemu: unhandled CPU exception 0x15 - aborting" when one of the integer arithmetic instructions detects an overflow. This patch fixes it so that it delivers SIGFPE with FPE_INTOVF instead. Cc: qemu-stable@nongnu.org Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Message-Id: <3ef979a8-3ee1-eb2d-71f7-d788ff88dd11@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-18linux-user: Fixes for zero_bssRichard Henderson1-13/+40
The previous change, 2d385be6152, assumed !PAGE_VALID meant that the page would be unmapped by the elf image. However, since we reserved the entire image space via mmap, PAGE_VALID will always be set. Instead, assume PROT_NONE for the same condition. Furthermore, assume bss is only ever present for writable segments, and that there is no page overlap between PT_LOAD segments. Instead of an assert, return false to indicate failure. Cc: qemu-stable@nongnu.org Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1854 Fixes: 2d385be6152 ("linux-user: Do not adjust zero_bss for host page size") Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-06linux-user/syscall.c: clean up local variable shadowing in xattr syscallsLaurent Vivier1-4/+4
p is a generic variable in syscall() and can be used by any syscall case, so this patch removes the useless local variable declaration for the following syscalls: TARGET_NR_llistxattr, TARGET_NR_listxattr, TARGET_NR_setxattr, TARGET_NR_lsetxattr, TARGET_NR_getxattr, TARGET_NR_lgetxattr, TARGET_NR_removexattr, TARGET_NR_lremovexattr. Fix following warnings: .../linux-user/syscall.c:12342:15: warning: declaration of 'p' shadows a previous local [-Wshadow=compatible-local] 12342 | void *p, *b = 0; | ^ .../linux-user/syscall.c:8975:11: note: shadowed declaration is here 8975 | void *p; | ^ .../linux-user/syscall.c:12379:19: warning: declaration of 'p' shadows a previous local [-Wshadow=compatible-local] 12379 | void *p, *n, *v = 0; | ^ .../linux-user/syscall.c:8975:11: note: shadowed declaration is here 8975 | void *p; | ^ .../linux-user/syscall.c:12424:19: warning: declaration of 'p' shadows a previous local [-Wshadow=compatible-local] 12424 | void *p, *n, *v = 0; | ^ .../linux-user/syscall.c:8975:11: note: shadowed declaration is here 8975 | void *p; | ^ .../linux-user/syscall.c:12469:19: warning: declaration of 'p' shadows a previous local [-Wshadow=compatible-local] 12469 | void *p, *n; | ^ .../linux-user/syscall.c:8975:11: note: shadowed declaration is here 8975 | void *p; | ^ Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20230925151029.461358-6-laurent@vivier.eu> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06linux-user/syscall.c: clean up local variable shadowing in TARGET_NR_getcpuLaurent Vivier1-3/+3
Fix following warnings: .../linux-user/syscall.c: In function 'do_syscall1': .../linux-user/syscall.c:11180:22: warning: declaration of 'cpu' shadows a previous local [-Wshadow=local] 11180 | unsigned cpu, node; | ^~~ .../linux-user/syscall.c:8963:15: note: shadowed declaration is here 8963 | CPUState *cpu = env_cpu(cpu_env); | ^~~ Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20230925151029.461358-5-laurent@vivier.eu> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06linux-user/syscall.c: clean up local variable shadowing in do_ioctl_dm()Laurent Vivier1-11/+11
Fix following warnings: .../linux-user/syscall.c: In function 'do_ioctl_dm': .../linux-user/syscall.c:5053:23: warning: declaration of 'arg_type' shadows a previous local [-Wshadow=local] 5053 | const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; | ^~~~~~~~ .../linux-user/syscall.c:4991:20: note: shadowed declaration is here 4991 | const argtype *arg_type = ie->arg_type; | ^~~~~~~~ ...//linux-user/syscall.c:5102:27: warning: declaration of 'arg_type' shadows a previous local [-Wshadow=local] 5102 | const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) }; | ^~~~~~~~ .../linux-user/syscall.c:4991:20: note: shadowed declaration is here 4991 | const argtype *arg_type = ie->arg_type; | ^~~~~~~~ .../linux-user/syscall.c:5130:27: warning: declaration of 'arg_type' shadows a previous local [-Wshadow=local] 5130 | const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; | ^~~~~~~~ .../linux-user/syscall.c:4991:20: note: shadowed declaration is here 4991 | const argtype *arg_type = ie->arg_type; | ^~~~~~~~ .../linux-user/syscall.c:5170:27: warning: declaration of 'arg_type' shadows a previous local [-Wshadow=local] 5170 | const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) }; | ^~~~~~~~ .../linux-user/syscall.c:4991:20: note: shadowed declaration is here 4991 | const argtype *arg_type = ie->arg_type; | ^~~~~~~~ Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20230925151029.461358-4-laurent@vivier.eu> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06linux-user/mmap.c: clean up local variable shadowingLaurent Vivier1-3/+3
Fix following warnings: .../linux-user/mmap.c: In function 'target_mremap': .../linux-user/mmap.c:913:13: warning: declaration of 'prot' shadows a previous local [-Wshadow=compatible-local] 913 | int prot = 0; | ^~~~ ../../../Projects/qemu/linux-user/mmap.c:871:9: note: shadowed declaration is here 871 | int prot; | ^~~~ Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20230925151029.461358-3-laurent@vivier.eu> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06linux-user/flatload: clean up local variable shadowingLaurent Vivier1-4/+4
Fix following warnings: .../linux-user/flatload.c: In function 'load_flt_binary': .../linux-user/flatload.c:758:23: warning: declaration of 'p' shadows a previous local [-Wshadow=compatible-local] 758 | abi_ulong p; | ^ ../../../Projects/qemu/linux-user/flatload.c:722:15: note: shadowed declaration is here 722 | abi_ulong p; | ^ Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20230925151029.461358-2-laurent@vivier.eu> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-04build: Remove --enable-gprofRichard Henderson2-11/+0
This build option has been deprecated since 8.0. Remove all CONFIG_GPROF code that depends on that, including one errant check using TARGET_GPROF. Acked-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-04linux-user/hppa: Fix struct target_sigcontext layoutRichard Henderson1-1/+1
Use abi_ullong not uint64_t so that the alignment of the field and therefore the layout of the struct is correct. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-04tcg: Split out tcg init functions to tcg/startup.hRichard Henderson2-2/+2
The tcg/tcg.h header is a big bucket, containing stuff related to the translators and the JIT backend. The places that initialize tcg or create new threads do not need all of that, so split out these three functions to a new header. Suggested-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-04tcg: Remove argument to tcg_prologue_initRichard Henderson1-1/+1
We can load tcg_ctx just as easily within the callee. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-04accel/tcg: Replace CPUState.env_ptr with cpu_env()Richard Henderson4-13/+12
Reviewed-by: Anton Johansson <anjo@rev.ng> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-29linux-user/strace: Clean up local variable shadowingPhilippe Mathieu-Daudé1-1/+0
Fix: linux-user/strace.c: In function ‘print_sockaddr’: linux-user/strace.c:370:17: warning: declaration of ‘i’ shadows a previous local [-Wshadow=compatible-local] 370 | int i; | ^ linux-user/strace.c:361:9: note: shadowed declaration is here 361 | int i; | ^ Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20230904161235.84651-20-philmd@linaro.org> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-09-21target/arm: Enable FEAT_MOPS for CPU 'max'Peter Maydell1-0/+1
Enable FEAT_MOPS on the AArch64 'max' CPU, and add it to the list of features we implement. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20230912140434.1333369-13-peter.maydell@linaro.org
2023-09-21target/arm: Implement FEAT_HBCPeter Maydell1-0/+1
FEAT_HBC (Hinted conditional branches) provides a new instruction BC.cond, which behaves exactly like the existing B.cond except that it provides a hint to the branch predictor about the likely behaviour of the branch. Since QEMU does not implement branch prediction, we can treat this identically to B.cond. 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>
2023-09-21linux-user/elfload.c: Report previously missing arm32 hwcapsPeter Maydell1-0/+12
Add the code to report the arm32 hwcaps we were previously missing: ss, ssbs, fphp, asimdhp, asimddp, asimdfhm, asimdbf16, i8mm Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-21linux-user/elfload.c: Add missing arm and arm64 hwcap valuesPeter Maydell1-0/+44
Our lists of Arm 32 and 64 bit hwcap values have lagged behind the Linux kernel. Update them to include all the bits defined as of upstream Linux git commit a48fa7efaf1161c1 (in the middle of the kernel 6.6 dev cycle). For 64-bit, we don't yet implement any of the features reported via these hwcap bits. For 32-bit we do in fact already implement them all; we'll add the code to set them in a subsequent commit. 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>
2023-09-21linux-user/elfload.c: Correct SME feature names reported in cpuinfoPeter Maydell1-7/+7
Some of the names we use for CPU features in linux-user's dummy /proc/cpuinfo don't match the strings in the real kernel in arch/arm64/kernel/cpuinfo.c. Specifically, the SME related features have an underscore in the HWCAP_FOO define name, but (like the SVE ones) they do not have an underscore in the string in cpuinfo. Correct the errors. Fixes: a55b9e7226708 ("linux-user: Emulate /proc/cpuinfo on aarch64 and arm") 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>
2023-09-20Merge tag 'pull-loongarch-20230920' of https://gitlab.com/gaosong/qemu into ↵Stefan Hajnoczi1-0/+1
staging Add LASX instructions support. # -----BEGIN PGP SIGNATURE----- # # iLMEAAEIAB0WIQS4/x2g0v3LLaCcbCxAov/yOSY+3wUCZQqV7wAKCRBAov/yOSY+ # 35GTA/9rXGbr9pIUnlGstUnWzIJb0vs6f4kt9DaKRPF1zyxaF/59sgl3gqCNAjBA # eAKfm5W4B8ABJ+PYR3ZVAg9AcAP9AOEi+qV6DgRwvYPPK3WbGqIpJL7i+7gNMMUs # gppv+IfJEkri8YLXXa7GWffuGOebqdqyD6Pl1B2eiKS4KYSRGw== # =fNr2 # -----END PGP SIGNATURE----- # gpg: Signature made Wed 20 Sep 2023 02:49:19 EDT # gpg: using RSA key B8FF1DA0D2FDCB2DA09C6C2C40A2FFF239263EDF # gpg: Good signature from "Song Gao <m17746591750@163.com>" [unknown] # gpg: WARNING: This key is not certified with a trusted signature! # gpg: There is no indication that the signature belongs to the owner. # Primary key fingerprint: B8FF 1DA0 D2FD CB2D A09C 6C2C 40A2 FFF2 3926 3EDF * tag 'pull-loongarch-20230920' of https://gitlab.com/gaosong/qemu: (57 commits) target/loongarch: CPUCFG support LASX target/loongarch: Move simply DO_XX marcos togther target/loongarch: Implement xvld xvst target/loongarch: Implement xvshuf xvperm{i} xvshuf4i target/loongarch: Implement xvpack xvpick xvilv{l/h} target/loongarch: Implement xvreplve xvinsve0 xvpickve target/loongarch: Implement xvinsgr2vr xvpickve2gr target/loongarch: Implement xvbitsel xvset target/loongarch: Implement xvfcmp target/loongarch: Implement xvseq xvsle xvslt target/loongarch: Implement LASX fpu fcvt instructions target/loongarch: Implement LASX fpu arith instructions target/loongarch: Implement xvfrstp target/loongarch: Implement xvbitclr xvbitset xvbitrev target/loongarch: Implement xvpcnt target/loongarch: Implement xvclo xvclz target/loongarch: Implement xvssrlrn xvssrarn target/loongarch: Implement xvssrln xvssran target/loongarch: Implement xvsrlrn xvsrarn target/loongarch: Implement xvsrln xvsran ... Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-09-20target/loongarch: Add LASX data supportSong Gao1-0/+1
Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230914022645.1151356-12-gaosong@loongson.cn>
2023-09-19linux-user/hppa: lock both words of function descriptorMikulas Patocka1-2/+3
The code in setup_rt_frame reads two words at haddr, but locks only one. This patch fixes it to lock both. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Acked-by: Helge Deller <deller@gmx.de> Cc: qemu-stable@nongnu.org Signed-off-by: Helge Deller <deller@gmx.de>
2023-09-19linux-user/hppa: clear the PSW 'N' bit when delivering signalsMikulas Patocka1-0/+1
qemu-hppa may crash when delivering a signal. It can be demonstrated with this program. Compile the program with "hppa-linux-gnu-gcc -O2 signal.c" and run it with "qemu-hppa -one-insn-per-tb a.out". It reports that the address of the flag is 0xb4 and it crashes when attempting to touch it. #include <stdio.h> #include <stdlib.h> #include <sys/time.h> #include <signal.h> sig_atomic_t flag; void sig(int n) { printf("&flag: %p\n", &flag); flag = 1; } int main(void) { struct sigaction sa; struct itimerval it; sa.sa_handler = sig; sigemptyset(&sa.sa_mask); sa.sa_flags = SA_RESTART; if (sigaction(SIGALRM, &sa, NULL)) perror("sigaction"), exit(1); it.it_interval.tv_sec = 0; it.it_interval.tv_usec = 100; it.it_value.tv_sec = it.it_interval.tv_sec; it.it_value.tv_usec = it.it_interval.tv_usec; if (setitimer(ITIMER_REAL, &it, NULL)) perror("setitimer"), exit(1); while (1) { } } The reason for the crash is that the signal handling routine doesn't clear the 'N' flag in the PSW. If the signal interrupts a thread when the 'N' flag is set, the flag remains set at the beginning of the signal handler and the first instruction of the signal handler is skipped. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Acked-by: Helge Deller <deller@gmx.de> Cc: qemu-stable@nongnu.org Signed-off-by: Helge Deller <deller@gmx.de>
2023-09-11linux-user/riscv: Add new extensions to hwprobeRobbin Ehn1-1/+13
This patch adds the new extensions in linux 6.5 to the hwprobe syscall. And fixes RVC check to OR with correct value. The previous variable contains 0 therefore it did work. Signed-off-by: Robbin Ehn <rehn@rivosinc.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Alistair Francis <alistair.francis@wdc.com> Message-ID: <bc82203b72d7efb30f1b4a8f9eb3d94699799dc8.camel@rivosinc.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2023-09-11linux-user/riscv: Use abi type for target_ucontextLIU Zhiwei1-2/+2
We should not use types dependend on host arch for target_ucontext. This bug is found when run rv32 applications. Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20230811055438.1945-1-zhiwei_liu@linux.alibaba.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2023-09-06Merge tag 'pull-lu-20230901' of https://gitlab.com/rth7680/qemu into stagingStefan Hajnoczi27-429/+818
linux-user: Rewrite and improve /proc/pid/maps linux-user: Fix shmdt and improve shm region tracking linux-user: Remove ELF_START_MMAP and image_info.start_mmap # -----BEGIN PGP SIGNATURE----- # # iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmTyTEcdHHJpY2hhcmQu # aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV8aZAf/UVKDv0FwEzxn3wzx # pT+NbP4adHCew5ovDq94In9OpwG4+PtZj3x+EdPCFxAvVb9KdOs001a9zSRYSwWi # 0p9ZkOgtq58/Wr34dl6C8oPZP8bnw7hfVcXWYwdsBq9K+dmW9Tu4LgZSc92NWYiE # SGBATB/cF4keLlDJrm1YBfb6cVKmYHdgQzMHr4g4TitBOO3lic8HQglXN8eKvQyd # ZKuMxFwfSGjaNXsoBLmzPBEqJCLzj5JNtOb8maIN9oPTkkC66XvkBmD/4UrQ7K3x # aX2QgZpxZYZsyKfWJd4EkrJl+0JZYvGW4vBX1c+vBdIYQZoBHlWwZQBqsi+AMA6J # ASc3hQ== # =QWfr # -----END PGP SIGNATURE----- # gpg: Signature made Fri 01 Sep 2023 16:40:39 EDT # gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F # gpg: issuer "richard.henderson@linaro.org" # gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full] # Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F * tag 'pull-lu-20230901' of https://gitlab.com/rth7680/qemu: linux-user: Track shm regions with an interval tree linux-user: Fix shmdt linux-user: Use WITH_MMAP_LOCK_GUARD in target_{shmat,shmdt} linux-user: Move shmat and shmdt implementations to mmap.c linux-user: Remove ELF_START_MMAP and image_info.start_mmap linux-user: Emulate the Anonymous: keyword in /proc/self/smaps linux-user: Show heap address in /proc/pid/maps linux-user: Adjust brk for load_bias linux-user: Use walk_memory_regions for open_self_maps util/selfmap: Use dev_t and ino_t in MapInfo linux-user: Emulate /proc/cpuinfo for Alpha linux-user: Emulate /proc/cpuinfo on aarch64 and arm linux-user: Split out cpu/target_proc.h Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-09-01linux-user: Track shm regions with an interval treeRichard Henderson1-28/+53
Remove the fixed size shm_regions[] array. Remove references when other mappings completely remove or replace a region. Tested-by: Helge Deller <deller@gmx.de> Reviewed-by: Helge Deller <deller@gmx.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-01linux-user: Fix shmdtRichard Henderson1-3/+14
If the shm region is not mapped at shmaddr, EINVAL. Do not unmap the region until the syscall succeeds. Use mmap_reserve_or_unmap to preserve reserved_va semantics. Tested-by: Helge Deller <deller@gmx.de> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-01linux-user: Use WITH_MMAP_LOCK_GUARD in target_{shmat,shmdt}Richard Henderson1-52/+46
Move the CF_PARALLEL setting outside of the mmap lock. Tested-by: Helge Deller <deller@gmx.de> Reviewed-by: Helge Deller <deller@gmx.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-01linux-user: Move shmat and shmdt implementations to mmap.cRichard Henderson3-139/+146
Rename from do_* to target_*. Fix some minor checkpatch errors. Tested-by: Helge Deller <deller@gmx.de> Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Warner Losh <imp@bsdimp.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-01linux-user: Remove ELF_START_MMAP and image_info.start_mmapRichard Henderson2-39/+0
The start_mmap value is write-only. Remove the field and the defines that populated it. Logically, this has been replaced by task_unmapped_base. Tested-by: Helge Deller <deller@gmx.de> Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-01linux-user: Emulate the Anonymous: keyword in /proc/self/smapsIlya Leoshkevich1-1/+2
Core dumps produced by gdb's gcore when connected to qemu's gdbstub lack stack. The reason is that gdb includes only anonymous memory in core dumps, which is distinguished by a non-0 Anonymous: value. Consider the mappings with PAGE_ANON fully anonymous, and the mappings without it fully non-anonymous. Tested-by: Helge Deller <deller@gmx.de> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> [rth: Update for open_self_maps_* rewrite] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-01linux-user: Show heap address in /proc/pid/mapsRichard Henderson1-0/+2
Tested-by: Helge Deller <deller@gmx.de> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-01linux-user: Adjust brk for load_biasRichard Henderson1-1/+1
PIE executables are usually linked at offset 0 and are relocated somewhere during load. The hiaddr needs to be adjusted to keep the brk next to the executable. Cc: qemu-stable@nongnu.org Fixes: 1f356e8c013 ("linux-user: Adjust initial brk when interpreter is close to executable") Tested-by: Helge Deller <deller@gmx.de> Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-01linux-user: Use walk_memory_regions for open_self_mapsRichard Henderson1-76/+114
Replace the by-hand method of region identification with the official user-exec interface. Cross-check the region provided to the callback with the interval tree from read_self_maps(). Tested-by: Helge Deller <deller@gmx.de> Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-01util/selfmap: Use dev_t and ino_t in MapInfoRichard Henderson1-2/+4
Use dev_t instead of a string, and ino_t instead of uint64_t. The latter is likely to be identical on modern systems but is more type-correct for usage. Tested-by: Helge Deller <deller@gmx.de> Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-01linux-user: Emulate /proc/cpuinfo for AlphaHelge Deller1-1/+67
Add emulation for /proc/cpuinfo for the alpha architecture. alpha output example: (alpha-chroot)root@p100:/# cat /proc/cpuinfo cpu : Alpha cpu model : ev67 cpu variation : 0 cpu revision : 0 cpu serial number : JA00000000 system type : QEMU system variation : QEMU_v8.0.92 system revision : 0 system serial number : AY00000000 cycle frequency [Hz] : 250000000 timer frequency [Hz] : 250.00 page size [bytes] : 8192 phys. address bits : 44 max. addr. space # : 255 BogoMIPS : 2500.00 platform string : AlphaServer QEMU user-mode VM cpus detected : 8 cpus active : 4 cpu active mask : 0000000000000095 L1 Icache : n/a L1 Dcache : n/a L2 cache : n/a L3 cache : n/a Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230803214450.647040-4-deller@gmx.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-01linux-user: Emulate /proc/cpuinfo on aarch64 and armHelge Deller4-7/+233
Add emulation for /proc/cpuinfo for arm architecture. The output below mimics output as seen on debian porterboxes. aarch64 output example: processor : 0 model name : ARMv8 Processor rev 0 (v8l) BogoMIPS : 100.00 Features : swp half thumb fast_mult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae aes pmull sha1 sha2 crc32 CPU implementer : 0x41 CPU architecture: 8 CPU variant : 0x1 CPU part : 0xd07 CPU revision : 0 arm 32-bit output example: processor : 0 model name : ARMv7 Processor rev 5 (armv7l) BogoMIPS : 100.00 Features : swp half thumb fast_mult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0f CPU part : 0xc07 CPU revision : 5 Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230803214450.647040-3-deller@gmx.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-01linux-user: Split out cpu/target_proc.hRichard Henderson22-170/+226
Move the various open_cpuinfo functions into new files. Move the m68k open_hardware function as well. All other guest architectures get a boilerplate empty file. Tested-by: Helge Deller <deller@gmx.de> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
generated by cgit v1.1 at 2024-10-21 13:32:58 +0000