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2022-09-06linux-user: Clear translations on mprotect()Ilya Leoshkevich
Currently it's possible to execute pages that do not have PAGE_EXEC if there is an existing translation block. Fix by invalidating TBs that touch the affected pages. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20220817150506.592862-2-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-09-06linux-user: Honor PT_GNU_STACKRichard Henderson
Map the stack executable if required by default or on demand. 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>
2022-09-06linux-user/x86_64: Allocate vsyscall page as a commpageRichard Henderson
We're about to start validating PAGE_EXEC, which means that we've got to mark the vsyscall page executable. We had been special casing this entirely within translate. 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>
2022-09-06linux-user/hppa: Allocate page zero as a commpageRichard Henderson
We're about to start validating PAGE_EXEC, which means that we've got to mark page zero executable. We had been special casing this entirely within translate. 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>
2022-09-06linux-user/arm: Mark the commpage executableRichard Henderson
We're about to start validating PAGE_EXEC, which means that we've got to mark the commpage executable. We had been placing the commpage outside of reserved_va, which was incorrect and lead to an abort. 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>
2022-08-18Revert "linux-user: un-parent OBJECT(cpu) when closing thread"Richard Henderson
This reverts commit 52f0c1607671293afcdb2acc2f83e9bccbfa74bb. This caused a regression in arm/aarch64. We are hard-coding ARMCPRegInfo pointers into TranslationBlocks, for calling into helper_{get,set}cp_reg{,64}. So we have a race condition between whichever cpu thread translates the code first (encoding the pointer), and that cpu thread exiting, so that the next execution of the TB references a freed data structure. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-08-16linux-user: un-parent OBJECT(cpu) when closing threadAlex Bennée
While forcing the CPU to unrealize by hand does trigger the clean-up code we never fully free resources because refcount never reaches zero. This is because QOM automatically added objects without an explicit parent to /unattached/, incrementing the refcount. Instead of manually triggering unrealization just unparent the object and let the device machinery deal with that for us. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/866 Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220811151413.3350684-2-alex.bennee@linaro.org>
2022-08-11linux-user/aarch64: Reset target data on MADV_DONTNEEDVitaly Buka
aarch64 stores MTE tags in target_date, and they should be reset by MADV_DONTNEED. Signed-off-by: Vitaly Buka <vitalybuka@google.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220711220028.2467290-1-vitalybuka@google.com> [lv: fix code style issues] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-08-10linux-user: fix compat with glibc >= 2.36 sys/mount.hDaniel P. Berrangé
The latest glibc 2.36 has extended sys/mount.h so that it defines the FSCONFIG_* enum constants. These are historically defined in linux/mount.h, and thus if you include both headers the compiler complains: In file included from /usr/include/linux/fs.h:19, from ../linux-user/syscall.c:98: /usr/include/linux/mount.h:95:6: error: redeclaration of 'enum fsconfig_command' 95 | enum fsconfig_command { | ^~~~~~~~~~~~~~~~ In file included from ../linux-user/syscall.c:31: /usr/include/sys/mount.h:189:6: note: originally defined here 189 | enum fsconfig_command | ^~~~~~~~~~~~~~~~ /usr/include/linux/mount.h:96:9: error: redeclaration of enumerator 'FSCONFIG_SET_FLAG' 96 | FSCONFIG_SET_FLAG = 0, /* Set parameter, supplying no value */ | ^~~~~~~~~~~~~~~~~ /usr/include/sys/mount.h:191:3: note: previous definition of 'FSCONFIG_SET_FLAG' with type 'enum fsconfig_command' 191 | FSCONFIG_SET_FLAG = 0, /* Set parameter, supplying no value */ | ^~~~~~~~~~~~~~~~~ ...snip... QEMU doesn't include linux/mount.h, but it does use linux/fs.h and thus gets linux/mount.h indirectly. glibc acknowledges this problem but does not appear to be intending to fix it in the forseeable future, simply documenting it as a known incompatibility with no workaround: https://sourceware.org/glibc/wiki/Release/2.36#Usage_of_.3Clinux.2Fmount.h.3E_and_.3Csys.2Fmount.h.3E https://sourceware.org/glibc/wiki/Synchronizing_Headers To address this requires either removing use of sys/mount.h or linux/fs.h, despite QEMU needing declarations from both. This patch removes linux/fs.h, meaning we have to define various FS_IOC constants that are now unavailable. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Tested-by: Richard W.M. Jones <rjones@redhat.com> Message-Id: <20220802164134.1851910-1-berrange@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-08-05target/loongarch: Update gdb_set_fpu() and gdb_get_fpu()Song Gao
GDB LoongArch fpu use fcc register, update gdb_set_fpu() and gdb_get_fpu() to match it. Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20220805033523.1416837-6-gaosong@loongson.cn>
2022-08-03Merge tag 'linux-user-for-7.1-pull-request' of ↵Richard Henderson
https://gitlab.com/laurent_vivier/qemu into staging Pull request linux-user 20220803 # -----BEGIN PGP SIGNATURE----- # # iQJGBAABCAAwFiEEzS913cjjpNwuT1Fz8ww4vT8vvjwFAmLqjIMSHGxhdXJlbnRA # dml2aWVyLmV1AAoJEPMMOL0/L748bpAP/1HW4wQztNCDL2epXGtDMTHFIjsLlc05 # h/3BwnXXXbRv/m4+IEJLITI5WpyZ24CGgA5kIFPRDxLCIHxcTo5etzqkJzxhnRvU # MNP3m8L5gSAUUZhD8Xw2b95V8vOv4cu8J+sgub8ZaRXJpcHK1cuCF43OeI3bBuoz # HNVY8XHl0E46JyXQmK9/phBRSK8INhlMIORd+k/GzSx7+9/UdIqTj1kVpdgbQ8we # GqrnVW9hYA2T2vUL3SEV8t6GE6lSGRr9bvsyRRfLxJanUEQbGmbJPvqBwjamRwUF # xZOBou/cYQOoI9AVku9bL+h2ITGfrfNZ8Oo7r7oOrz+ZjBfL9hUQqhFhI/oI265n # 4ivzdOcsXH6OT7X+JdZRvyv6pxVL7ycu2KCKvmnNvQSocGHT1OvFqIHAWd+NAdEr # c4q1ob1QdUfZjrzjzLR/qY2NPZat1Ge5lSIXOwC1G3T5umuw8cV7BV9KJJRoQXfE # AWeXsLKqqByQ59z+qObnFIkUXLaUOzKMjHNFpDGSqk+dzXxQYJtBn+b8ZLoL9MLa # miIN9imVzI2gzolIBz9Za2pnBw72bIR2PdXd3zfKH0cqmytOhKlMIEK4KJcB6kMB # CNAbszUwrmBSopGGryf+hLMk9VsPLVUg+Yqnc6/GLY8LF9d8Xr5rd8UzelYowBuh # 3UR/V06U2Skv # =41sQ # -----END PGP SIGNATURE----- # gpg: Signature made Wed 03 Aug 2022 07:56:03 AM PDT # gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C # gpg: issuer "laurent@vivier.eu" # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [undefined] # gpg: aka "Laurent Vivier <laurent@vivier.eu>" [undefined] # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [undefined] # 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: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * tag 'linux-user-for-7.1-pull-request' of https://gitlab.com/laurent_vivier/qemu: linux-user: Use memfd for open syscall emulation linux-user: Do not treat madvise()'s advice as a bitmask linux-user/flatload.c: Fix setting of image_info::end_code Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-08-02linux-user: Use memfd for open syscall emulationRainer Müller
For certain paths in /proc, the open syscall is intercepted and the returned file descriptor points to a temporary file with emulated contents. If TMPDIR is not accessible or writable for the current user (for example in a read-only mounted chroot or container) tools such as ps from procps may fail unexpectedly. Trying to read one of these paths such as /proc/self/stat would return an error such as ENOENT or EROFS. To relax the requirement on a writable TMPDIR, use memfd_create() instead to create an anonymous file and return its file descriptor. Signed-off-by: Rainer Müller <raimue@codingfarm.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220729154951.76268-1-raimue@codingfarm.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-08-02linux-user/riscv: Align signal frame to 16 bytesRichard Henderson
Follow the kernel's alignment, as we already noted. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1093 Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20220729201942.30738-1-richard.henderson@linaro.org> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-08-01misc: fix commonly doubled up wordsDaniel P. Berrangé
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20220707163720.1421716-5-berrange@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-07-29linux-user: Do not treat madvise()'s advice as a bitmaskIlya Leoshkevich
Advice is enum, not flags. Doing (advice & MADV_DONTNEED) also matches e.g. MADV_MERGEABLE. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220725134100.128035-1-iii@linux.ibm.com> Fixes: 892a4f6a750a ("linux-user: Add partial support for MADV_DONTNEED") Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-07-28linux-user/flatload.c: Fix setting of image_info::end_codePeter Maydell
The flatload loader sets the end_code field in the image_info struct incorrectly, due to a typo. This is a very long-standing bug (dating all the way back to when the bFLT loader was added in 2006), but has gone unnoticed because (a) most people don't use bFLT binaries (b) we don't actually do anything with the end_code field, except print it in debugging traces and pass it to TCG plugins Fix the typo. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1119 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220728151406.2262862-1-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-07-25linux-user: Use target abi_int type for pipefd[1] in pipe()Helge Deller
When writing back the fd[1] pipe file handle to emulated userspace memory, use sizeof(abi_int) as offset insted of the hosts's int type. There is no functional change in this patch. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <YtQ3Id6z8slpVr7r@p100> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-07-25linux-user: Unconditionally use pipe2() syscallHelge Deller
The pipe2() syscall is available on all Linux platforms since kernel 2.6.27, so use it unconditionally to emulate pipe() and pipe2(). Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <YtbZ2ojisTnzxN9Y@p100> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-07-25linux-user/hppa: Fix segfaults on page zeroHelge Deller
This program: int main(void) { asm("bv %r0(%r0)"); return 0; } produces on real hppa hardware the expected segfault: SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x3} --- killed by SIGSEGV +++ Segmentation fault But when run on linux-user you get instead internal qemu errors: ERROR: linux-user/hppa/cpu_loop.c:172:cpu_loop: code should not be reached Bail out! ERROR: linux-user/hppa/cpu_loop.c:172:cpu_loop: code should not be reached ERROR: accel/tcg/cpu-exec.c:933:cpu_exec: assertion failed: (cpu == current_cpu) Bail out! ERROR: accel/tcg/cpu-exec.c:933:cpu_exec: assertion failed: (cpu == current_cpu) Fix it by adding the missing case for the EXCP_IMP trap in cpu_loop() and raise a segfault. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <YtWNC56seiV6VenA@p100> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-07-11linux-user/aarch64: Add SME related hwcap entriesRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-46-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Implement PR_SME_GET_VL, PR_SME_SET_VLRichard Henderson
These prctl set the Streaming SVE vector length, which may be completely different from the Normal SVE vector length. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-43-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user: Rename sve prctlsRichard Henderson
Add "sve" to the sve prctl functions, to distinguish them from the coming "sme" prctls with similar names. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-42-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Implement SME signal handlingRichard Henderson
Set the SM bit in the SVE record on signal delivery, create the ZA record. Restore SM and ZA state according to the records present on return. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-41-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Move sve record checks into restoreRichard Henderson
Move the checks out of the parsing loop and into the restore function. This more closely mirrors the code structure in the kernel, and is slightly clearer. Reject rather than silently skip incorrect VL and SVE record sizes, bringing our checks in to line with those the kernel does. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-40-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Verify extra record lock succeededRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-39-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Do not allow duplicate or short sve recordsRichard Henderson
In parse_user_sigframe, the kernel rejects duplicate sve records, or records that are smaller than the header. We were silently allowing these cases to pass, dropping the record. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-38-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Tidy target_restore_sigframe error returnRichard Henderson
Fold the return value setting into the goto, so each point of failure need not do both. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-37-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Add SM bit to SVE signal contextRichard Henderson
Make sure to zero the currently reserved fields. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-36-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Reset PSTATE.SM on syscallsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-35-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Clear tpidr2_el0 if CLONE_SETTLSRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-34-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-04linux-user: Add LoongArch cpu_loop supportSong Gao
Signed-off-by: Song Gao <gaosong@loongson.cn> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220624031049.1716097-6-gaosong@loongson.cn> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-04linux-user: Add LoongArch syscall supportSong Gao
Signed-off-by: Song Gao <gaosong@loongson.cn> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220624031049.1716097-5-gaosong@loongson.cn> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-04linux-user: Add LoongArch elf supportSong Gao
Signed-off-by: Song Gao <gaosong@loongson.cn> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220624031049.1716097-4-gaosong@loongson.cn> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-04linux-user: Add LoongArch signal supportSong Gao
Signed-off-by: Song Gao <gaosong@loongson.cn> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Message-Id: <20220624031049.1716097-3-gaosong@loongson.cn> [rth: Rework extctx frame allocation and locking; Properly read/write fcc from signal frame.] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-04linux-user: Add LoongArch generic header filesSong Gao
This includes: - sockbits.h - target_errno_defs.h - target_fcntl.h - termbits.h - target_resource.h - target_structs.h Signed-off-by: Song Gao <gaosong@loongson.cn> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: WANG Xuerui <git@xen0n.name> Message-Id: <20220624031049.1716097-2-gaosong@loongson.cn> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28target/m68k: Make semihosting system onlyRichard Henderson
While we had a call to do_m68k_semihosting in linux-user, it wasn't actually reachable. We don't include DISAS_INSN(halt) as an instruction unless system mode. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Remove qemu_semihosting_console_outsRichard Henderson
This function has been replaced by *_write. Reviewed-by: Luc Michel <lmichel@kalray.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Remove qemu_semihosting_console_outcRichard Henderson
This function has been replaced by *_write. Reviewed-by: Luc Michel <lmichel@kalray.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Create qemu_semihosting_guestfd_initRichard Henderson
For arm-compat, initialize console_{in,out}_gf; otherwise, initialize stdio file descriptors. This will go some way to cleaning up arm-compat, and will allow other semihosting to use normal stdio. Reviewed-by: Luc Michel <lmichel@kalray.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Create qemu_semihosting_console_writeRichard Henderson
Will replace qemu_semihosting_console_{outs,outc}, but we need more plumbing first. Reviewed-by: Luc Michel <lmichel@kalray.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Expand qemu_semihosting_console_inc to readRichard Henderson
Allow more than one character to be read at one time. Will be used by m68k and nios2 semihosting for stdio. Reviewed-by: Luc Michel <lmichel@kalray.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Pass CPUState to qemu_semihosting_console_incRichard Henderson
We don't need CPUArchState, and we do want the CPUState of the thread performing the operation -- use this instead of current_cpu. Reviewed-by: Luc Michel <lmichel@kalray.eu> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Return void from do_common_semihostingRichard Henderson
Perform the cleanup in the FIXME comment in common_semi_gdb_syscall. Do not modify guest registers until the syscall is complete, which in the gdbstub case is asynchronous. In the synchronous non-gdbstub case, use common_semi_set_ret to set the result. Merge set_swi_errno into common_semi_cb. Rely on the latter for combined return value / errno setting. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-24linux-user: Adjust child_tidptr on set_tid_address() syscallHelge Deller
Keep track of the new child tidptr given by a set_tid_address() syscall. Do not call the host set_tid_address() syscall because we are emulating the behaviour of writing to child_tidptr in the exit() path. Signed-off-by: Helge Deller<deller@gmx.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <YpH+2sw1PCRqx/te@p100> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-24linux-user: Add partial support for MADV_DONTNEEDIlya Leoshkevich
Currently QEMU ignores madvise(MADV_DONTNEED), which break apps that rely on this for zeroing out memory [1]. Improve the situation by doing a passthrough when the range in question is a host-page-aligned anonymous mapping. This is based on the patches from Simon Hausmann [2] and Chris Fallin [3]. The structure is taken from Simon's patch. The PAGE_MAP_ANONYMOUS bits are superseded by commit 26bab757d41b ("linux-user: Introduce PAGE_ANON"). In the end the patch acts like the one from Chris: we either pass-through the entire syscall, or do nothing, since doing this only partially would not help the affected applications much. Finally, add some extra checks to match the behavior of the Linux kernel [4]. [1] https://gitlab.com/qemu-project/qemu/-/issues/326 [2] https://patchew.org/QEMU/20180827084037.25316-1-simon.hausmann@qt.io/ [3] https://github.com/bytecodealliance/wasmtime/blob/v0.37.0/ci/qemu-madvise.patch [4] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/mm/madvise.c?h=v5.19-rc3#n1368 Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220621144205.158452-1-iii@linux.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-21linux-user/x86_64: Fix ELF_PLATFORMRichard Henderson
We had been using the i686 platform string for x86_64. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1041 Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220603213801.64738-1-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-08linux-user/aarch64: Introduce sve_vqRichard Henderson
Add an interface function to extract the digested vector length rather than the raw zcr_el[1] value. This fixes an incorrect return from do_prctl_set_vl where we didn't take into account the set of vector lengths supported by the cpu. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220607203306.657998-3-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-02Merge tag 'm68k-for-7.1-pull-request' of https://github.com/vivier/qemu-m68k ↵Richard Henderson
into staging m68k pull request 20220602 - Fixes and cleanup - Implement TRAP opcodes - Enable halt on 68060 # -----BEGIN PGP SIGNATURE----- # # iQJGBAABCAAwFiEEzS913cjjpNwuT1Fz8ww4vT8vvjwFAmKYpeQSHGxhdXJlbnRA # dml2aWVyLmV1AAoJEPMMOL0/L748U+AP/i6EYidZmelIEqOwZTwwzxreF5bTZmAP # v0Hxt3Tef3PWJpLnoCXCsd4othCO3PgHcwtrLff+bkWRl0Wt5CYcq+tTu2im7fIN # zM7RSO00Pt/va7Ss7Ej8d5P5l7uuFqcBFytnitbsNrvHNK4cQ9PVmOkPnJZe0lYt # vA3pUk7giE1KV+/s78Z4VD5CbvwpTRQpDCPDvba7oIP2E9mOELajKtYGh7gvPthx # hrG2L5Ou4rYWxJkpZ0mNyYvoPuGRmzgPImdaDMTPLjEYNJMnnqGCRm+ANtzNk+jy # d/fE/xJ41xvPAt4Q29yCp0vITuRF468M/elp5hQr/rHc6xtitLCi57FhduY9PuL/ # zCMXytgFtnU1C9XhDI/FtQhQxpvEKkZmEJRrAnsuHQKLrHlGoofjBU3whHqfx1zG # qw/cdYqx/RUKKxvmoTbk76doaqfVQvBIx2nB6CsHF3pqOpQETK5TYeId49GCkwgR # 4DmBPL1RZZpkYxi1KEKprcJWMj1l29UTa2dJ+kt9T2YACRm7MYQurP8OCGoHFIX4 # MOr3vdxaqSRU+mE2lWLZWupkZyzFrG/khHSB7A9htTomgbfZLfc0YkHX5kOkHQNq # k4ymLpf16F94aau568HVQO8UZV+1FedtRwJL2EWVqkzKri9rSCCeI8I27HVLjwLP # YzrHwsMVsjgl # =T1g0 # -----END PGP SIGNATURE----- # gpg: Signature made Thu 02 Jun 2022 04:58:28 AM PDT # gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C # gpg: issuer "laurent@vivier.eu" # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [undefined] # gpg: aka "Laurent Vivier <laurent@vivier.eu>" [undefined] # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [undefined] # 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: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * tag 'm68k-for-7.1-pull-request' of https://github.com/vivier/qemu-m68k: target/m68k: Mark helper_raise_exception as noreturn linux-user/strace: Adjust get_thread_area for m68k linux-user/strace: Use is_error in print_syscall_err tests/tcg/m68k: Add trap.c target/m68k: Implement FTRAPcc target/m68k: Implement TRAPV target/m68k: Implement TPF in terms of TRAPcc target/m68k: Implement TRAPcc target/m68k: Fix stack frame for EXCP_ILLEGAL target/m68k: Fix address argument for EXCP_TRACE target/m68k: Fix pc, c flag, and address argument for EXCP_DIV0 target/m68k: Fix address argument for EXCP_CHK target/m68k: Remove retaddr in m68k_interrupt_all linux-user/m68k: Handle EXCP_TRAP1 through EXCP_TRAP15 target/m68k: Fix coding style in m68k_interrupt_all target/m68k: Switch over exception type in m68k_interrupt_all target/m68k: Raise the TRAPn exception with the correct pc target/m68k: Enable halt insn for 68060 target/m68k: Clear mach in m68k_cpu_disas_set_info Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-02linux-user/strace: Adjust get_thread_area for m68kRichard Henderson
Unlike i386, m68k get_thread_area has no arguments. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-17-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-02linux-user/strace: Use is_error in print_syscall_errRichard Henderson
Errors are not all negative numbers: use is_error. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-16-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-27 15:53:27 +0000