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2024-11-06Merge tag 'pull-lu-20241105' of https://gitlab.com/rth7680/qemu into stagingPeter Maydell
tests/tcg: Replace -mpower8-vector with -mcpu=power8 linux-user: Fix GDB complaining about system-supplied DSO string table index linux-user: Allow custom rt signal mappings # -----BEGIN PGP SIGNATURE----- # # iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmcqM2wdHHJpY2hhcmQu # aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV86KQgAhR1OmVAhPYTJiYH6 # Bhp9s+PbdFw/UbxConf9+WFoa/vM1x/QvX1ybzNDl9aOeiH9RIX4hFWUH5WR8xu+ # gZrzplHDcsrUEs5Q7/GWGJaCbd92Rn6g5wcXyoVebMaVP1g/m+NJoxo2XOpZvY06 # G0BcNj4Ib/D0FgkgZrUJcf3DBWaW/9WCd17fBXLo1bpahdKvqV4PbmhhH+QZCVXr # GHg03F+/35U85kNVnPcUg4PJARQHdK4ZmfE4etgGvVkTdS8r43qfO1nMT0ul8aOD # uATdMQrbwKA0XLjWVOVxe4165c+luHpUweKNgiOie+s849YUM3TsFpunKoPBIEpQ # Gu0ejw== # =wipF # -----END PGP SIGNATURE----- # gpg: Signature made Tue 05 Nov 2024 15:02:04 GMT # 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-20241105' of https://gitlab.com/rth7680/qemu: tests/tcg: Add SIGRTMIN/SIGRTMAX test linux-user: Allow custom rt signal mappings linux-user: Fix GDB complaining about system-supplied DSO string table index tests/tcg: Replace -mpower8-vector with -mcpu=power8 Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-11-05linux-user: Allow custom rt signal mappingsIlya Leoshkevich
Some applications want to use low priority realtime signals (e.g., SIGRTMAX). Currently QEMU cannot map all target realtime signals to host realtime signals, and chooses to sacrifice the end of the target realtime signal range. Allow users to choose how to map target realtime signals to host realtime signals using the new -t option, the new QEMU_RTSIG_MAP environment variable, and the new -Drtsig_map=\"...\" meson flag. To simplify things, the meson flag is not per-target, because the intended use case is app-specific qemu-user builds. The mapping is specified using the "tsig hsig count[,...]" syntax. Target realtime signals [tsig,tsig+count) are mapped to host realtime signals [hsig,hsig+count). Care is taken to avoid double and out-of-range mappings. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20241029232211.206766-2-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-05linux-user: Fix GDB complaining about system-supplied DSO string table indexIlya Leoshkevich
When debugging qemu-user processes using gdbstub, the following warning appears every time: warning: BFD: warning: system-supplied DSO at 0x7f8253cc3000 has a corrupt string table index The reason is that QEMU does not map the VDSO's section headers. The VDSO's ELF header's e_shoff points to zeros, which GDB fails to parse. The difference with the kernel's VDSO is that the latter is mapped as a blob, ignoring program headers - which also don't cover the section table. QEMU, on the other hand, loads it as an ELF file. There appears to be no way to place section headers inside a section, and, therefore, no way to refer to them from a linker script. Also, ld hardcodes section headers to be non-loadable, see _bfd_elf_assign_file_positions_for_non_load(). In theory ld could be enhanced by implementing an "SHDRS" keyword in addition to the existing "FILEHDR" and "PHDRS". There are multiple ways to resolve the issue: - Copy VDSO as a blob in load_elf_vdso(). This would require creating specialized loader logic, that duplicates parts of load_elf_image(). - Fix up VDSO's PHDR size in load_elf_vdso(). This would require either duplicating the parsing logic, or adding an ugly parameter to load_elf_image(). - Fix up VDSO's PHDR size in gen-vdso. This is the simplest solution, so do it. There are two tricky parts: - Byte-swaps need to be done either on local copies, or in-place and then reverted in the end. To preserve the existing code structure, do the former for Sym and Dyn, and the latter for Ehdr, Phdr, and Shdr. - There must be no .bss, which is already the case - but having an explicit check is helpful to ensure correctness. To verify this change, I diffed the on-disk and the loaded VDSOs; the result does not show anything unusual, except for what seems to be an existing oversight (which should probably be fixed separately): │ Symbol table '.dynsym' contains 8 entries: │ Num: Value Size Type Bind Vis Ndx Name │ - 0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND │ - 6: 0000000000000000 0 OBJECT GLOBAL DEFAULT ABS LINUX_2.6.29 │ + 0: 00007f61075bf000 0 NOTYPE LOCAL DEFAULT UND │ + 6: 00007f61075bf000 0 OBJECT GLOBAL DEFAULT ABS LINUX_2.6.29 Fixes: 2fa536d10797 ("linux-user: Add gen-vdso tool") Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20241023202850.55211-1-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-11-05target/arm: Explicitly set 2-NaN propagation rulePeter Maydell
Set the 2-NaN propagation rule explicitly in the float_status words we use. We wrap this plus the pre-existing setting of the tininess-before-rounding flag in a new function arm_set_default_fp_behaviours() to avoid repetition, since we have a lot of float_status words at this point. The situation with FPA11 emulation in linux-user is a little odd, and arguably "correct" behaviour there would be to exactly match a real Linux kernel's FPA11 emulation. However FPA11 emulation is essentially dead at this point and so it seems better to continue with QEMU's current behaviour and leave a comment describing the situation. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241025141254.2141506-4-peter.maydell@linaro.org
2024-10-24Merge tag 'pull-tcg-20241022' of https://gitlab.com/rth7680/qemu into stagingPeter Maydell
tcg: Reset data_gen_ptr correctly tcg/riscv: Implement host vector support tcg/ppc: Fix tcg_out_rlw_rc target/i386: Walk NPT in guest real mode target/i386: Use probe_access_full_mmu in ptw_translate linux-user: Fix build failure caused by missing __u64 on musl linux-user: Emulate /proc/self/maps under mmap_lock linux-user/riscv: Fix definition of RISCV_HWPROBE_EXT_ZVFHMIN linux-user/ppc: Fix sigmask endianness issue in sigreturn # -----BEGIN PGP SIGNATURE----- # # iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmcYbccdHHJpY2hhcmQu # aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV97TwgAmg27QFCdiTrqZgs2 # P1AO40zTgyTAwWx2gykaEuDWNhz/uSWvlBRN0/636wqGPkbJtrRHYM26og4BAThh # o172/IwiZqfKOR1ndHl9j3BrtmrlIlaEEjiikqy1MTZF127irV6JWoJE1mSUrAxy # 3Cm1K4gnK/e1+LdWf4Lj+K2lE6PpAK/ppKggzOXhtEgKiH1l4bUCl/Fq54wqphUn # YS+cpmgQDCkXFfmPbQqie0HDpe3bhb75qIDQrbC5JcZdHqV73rTwSZvfUOmS/5Re # 18K6nfAXXT+Zm0IrJMey/7b1jUWF3nMUVCTuLvmhSOwBAkIvTVYHko9CjvLtM6YH # UHu3yA== # =V393 # -----END PGP SIGNATURE----- # gpg: Signature made Wed 23 Oct 2024 04:30:15 BST # 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-tcg-20241022' of https://gitlab.com/rth7680/qemu: (24 commits) linux-user/riscv: Fix definition of RISCV_HWPROBE_EXT_ZVFHMIN linux-user: Fix build failure caused by missing __u64 on musl linux-user: Trace rt_sigprocmask's sigsets linux-user/ppc: Fix sigmask endianness issue in sigreturn linux-user: Emulate /proc/self/maps under mmap_lock target/i386: Remove ra parameter from ptw_translate target/i386: Use probe_access_full_mmu in ptw_translate target/i386: Walk NPT in guest real mode include/exec: Improve probe_access_full{, _mmu} documentation tcg/ppc: Fix tcg_out_rlw_rc tcg/riscv: Enable native vector support for TCG host tcg/riscv: Implement vector roti/v/x ops tcg/riscv: Implement vector shi/s/v ops tcg/riscv: Implement vector min/max ops tcg/riscv: Implement vector sat/mul ops tcg/riscv: Accept constant first argument to sub_vec tcg/riscv: Implement vector neg ops tcg/riscv: Implement vector cmp/cmpsel ops tcg/riscv: Add support for basic vector opcodes tcg/riscv: Implement vector mov/dup{m/i} ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-10-22linux-user/riscv: Fix definition of RISCV_HWPROBE_EXT_ZVFHMINYao Zi
Current definition yields a negative 32bits value, messing up hwprobe result when Zvfhmin extension presents. Replace it by using a 1ULL bit shift value as done in kernel upstream. Link: https://github.com/torvalds/linux/commit/5ea6764d9095e234b024054f75ebbccc4f0eb146 Fixes: a3432cf227 ("linux-user/riscv: Sync hwprobe keys with Linux") Cc: qemu-stable@nongnu.org Signed-off-by: Yao Zi <ziyao@disroot.org> Message-ID: <20241022160136.21714-2-ziyao@disroot.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-22linux-user: Fix build failure caused by missing __u64 on muslYao Zi
Commit 9651cead2f ("linux-user: add openat2 support in linux-user") ships a definition of struct open_how_ver0 while assuming type __u64 is available in code, which is not the case when building QEMU on musl. Let's replaces __u64 with uint64_t. Fixes: 9651cead2f ("linux-user: add openat2 support in linux-user") Signed-off-by: Yao Zi <ziyao@disroot.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20241022122929.17465-2-ziyao@disroot.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-22linux-user: Trace rt_sigprocmask's sigsetsIlya Leoshkevich
Add a function for formatting target sigsets. It can be useful for other syscalls in the future, so put it into the beginning of strace.c. For simplicity, do not implement the strace's ~[] output syntax. Add a rt_sigprocmask return handler. Example outputs: 753914 rt_sigprocmask(SIG_BLOCK,[SIGCHLD SIGTSTP SIGTTIN SIGTTOU],0x00007f80fddfe380,8) = 0 (oldset=[SIGTTOU]) 753914 rt_sigprocmask(SIG_SETMASK,[SIGCHLD],NULL,8) = 0 753914 rt_sigprocmask(SIG_BLOCK,NULL,0x00007f80fddff3c0,8) = 0 (oldset=[]) Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20241022102726.18520-1-iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-22linux-user/ppc: Fix sigmask endianness issue in sigreturnIlya Leoshkevich
do_setcontext() copies the target sigmask without endianness handling and then uses target_to_host_sigset_internal(), which expects a byte-swapped one. Use target_to_host_sigset() instead. Fixes: bcd4933a23f1 ("linux-user: ppc signal handling") Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20241017125811.447961-2-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-22linux-user: Emulate /proc/self/maps under mmap_lockIlya Leoshkevich
If one thread modifies the mappings and another thread prints them, a situation may occur that the printer thread sees a guest mapping without a corresponding host mapping, leading to a crash in open_self_maps_2(). Cc: qemu-stable@nongnu.org Fixes: 7b7a3366e142 ("linux-user: Use walk_memory_regions for open_self_maps") Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20241014203441.387560-1-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-21linux-user: Clean up unused headerGustavo Romero
Clean up unused (already commented-out) header from syscall.c. Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Michael Tokarev <mjt@tls.msk.ru> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2024-10-15linux-user/i386: Use explicit little-endian LD/ST APIPhilippe Mathieu-Daudé
The x86 architecture uses little endianness. Directly use the little-endian LD/ST API. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <20241003234211.53644-4-philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-13linux-user/vm86: Fix compilation with ClangThomas Huth
Since commit 95b9c27c81 ("linux-user: Remove unused handle_vm86_fault") a bunch of other "static inline" function are now unused, too. Clang warns about such unused "static inline" functions in .c files, so the build currently breaks when compiling with "--enable-werror". Remove the unused functions to get it going again. Fixes: 95b9c27c81 ("linux-user: Remove unused handle_vm86_fault") Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Dr. David Alan Gilbert <dave@treblig.org> Message-ID: <20241011161845.417342-1-thuth@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-13linux-user/i386: Emulate orig_axIlya Leoshkevich
The kernel uses orig_rax/orig_eax to store the syscall number before a syscall. One can see this value in core dumps and ptrace. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20240912093012.402366-3-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-13include/exec: Introduce env_cpu_const()Ilya Leoshkevich
It's the same as env_cpu(), but for const objects. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20240912093012.402366-2-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-08linux-user: Add strace for recvfrom()Philippe Mathieu-Daudé
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20240807124306.52903-6-philmd@linaro.org> [rth: Do not dump output buffers.] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-08linux-user: Add strace for sendto()Philippe Mathieu-Daudé
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20240807124306.52903-5-philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-08linux-user: Factor print_buf_len() outPhilippe Mathieu-Daudé
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20240807124306.52903-4-philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-08linux-user: Display sockaddr buffer as pointerPhilippe Mathieu-Daudé
Rather than 'raw param', display as pointer to get "NULL" instead of "0x00000000". Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20240807124306.52903-3-philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-08linux-user: Correct print_sockaddr() formatPhilippe Mathieu-Daudé
When the %addr argument can not be accessed, a double comma is logged (the final qemu_log call prepend a comma). Move the comma from the final qemu_log to the preceeding switch cases that had omitted it. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20240807124306.52903-2-philmd@linaro.org> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> [rth: Move comma into the various switch cases.] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-08linux-user: Trace wait4()'s and waitpid()'s wstatusIlya Leoshkevich
Borrow the code for formatting the most frequent WIFEXITED() and WIFSIGNALED() special cases from from the strace's printstatus(). Output examples: 474729 wait4(-1,0x7f00767ff0a0,0,(nil)) = 474733 (wstatus={WIFEXITED(s) && WEXITSTATUS(s) == 1}) 475833 wait4(-1,0x7f7de61ff0a0,0,(nil)) = 475837 (wstatus={WIFSIGNALED(s) && WTERMSIG(s) == SIGKILL}) 1168 waitpid(1171,0x7f44eea00340,0) = 1171 (wstatus={WIFSIGNALED(s) && WTERMSIG(s) == SIGKILL}) Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20241001193244.14939-1-iii@linux.ibm.com> [rth: Drop extra output for NULL wstatus or error reading.] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-08linux-user: add strace support for openat2Michael Vogt
This commit adds support for the `openat2()` to `QEMU_STRACE`. It will use the `openat2.h` header if available to create user readable flags for the `resolve` argument but does not require the header otherwise. It also makes `copy_struct_from_user()` available via `qemu.h` and `open_how_ver0` via `syscall_defs.h` so that strace.c can use them. Signed-off-by: Michael Vogt <mvogt@redhat.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <f02d40c7751c03af885ced6dd94e4734d4be4d8f.1727795334.git.mvogt@redhat.com> [rth: Add braces around the expanded how structure, like strace(3)] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-08linux-user: add openat2 support in linux-userMichael Vogt
This commit adds support for the `openat2()` syscall in the `linux-user` userspace emulator. It is implemented by extracting a new helper `maybe_do_fake_open()` out of the exiting `do_guest_openat()` and share that with the new `do_guest_openat2()`. Unfortunately we cannot just make do_guest_openat2() a superset of do_guest_openat() because the openat2() syscall is stricter with the argument checking and will return an error for invalid flags or mode combinations (which open()/openat() will ignore). The implementation is similar to SYSCALL_DEFINE(openat2), i.e. a new `copy_struct_from_user()` is used that works the same as the kernels version to support backwards-compatibility for struct syscall argument. Instead of including openat2.h we create a copy of `open_how` as `open_how_ver0` to ensure that if the structure grows we can log a LOG_UNIMP warning. Note that in this commit using openat2() for a "faked" file in /proc will honor the "resolve" flags for RESOLVE_NO_{MAGIC,SYM}LINKS for path based access to /proc/self/exe (which is the only magic link we support for faked files). Note it will not catch special access via e.g. dirfd. This is not great but it seems similar to the exiting behavior when openat() is called with a dirfd to "/proc". Here too the fake file lookup may not catch the special file because no dirfd is used to determine if the path is in /proc. Signed-off-by: Michael Vogt <mvogt@redhat.com> Buglink: https://github.com/osbuild/bootc-image-builder/issues/619 Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <1c2c8c9db3731ed4c6fd9b10c63637c3e4caf8f5.1727795334.git.mvogt@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-08linux-user: Fix parse_elf_properties GNU0_MAGIC checkRichard Henderson
Comparing a string of 4 bytes only works in little-endian. Adjust bulk bswap to only apply to the note payload. Perform swapping of the note header manually; the magic is defined so that it does not need a runtime swap. Fixes: 83f990eb5adb ("linux-user/elfload: Parse NT_GNU_PROPERTY_TYPE_0 notes") Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2596 Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
2024-10-08linux-user/flatload: Take mmap_lock in load_flt_binary()Philippe Mathieu-Daudé
load_flt_binary() calls load_flat_file() -> page_set_flags(). page_set_flags() must be called with the mmap_lock held, otherwise it aborts: $ qemu-arm -L stm32/lib/ stm32/bin/busybox qemu-arm: ../accel/tcg/user-exec.c:505: page_set_flags: Assertion `have_mmap_lock()' failed. Aborted (core dumped) Fix by taking the lock in load_flt_binary(). Fixes: fbd3c4cff6 ("linux-user/arm: Mark the commpage executable") Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2525 Suggested-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20240822095045.72643-3-philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-03linux-user: Remove unused handle_vm86_faultDr. David Alan Gilbert
handle_vm86_fault has been unused since: 1ade5b2fed ("linux-user/i386: Split out maybe_handle_vm86_trap") Remove it, and it's local macros. Signed-off-by: Dr. David Alan Gilbert <dave@treblig.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Michael Tokarev <mjt@tls.msk.ru> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2024-10-02linux-user/hppa: fix -Werror=maybe-uninitialized false-positiveMarc-André Lureau
../linux-user/hppa/cpu_loop.c: In function ‘hppa_lws’: ../linux-user/hppa/cpu_loop.c:106:17: error: ‘ret’ may be used uninitialized [-Werror=maybe-uninitialized] 106 | env->gr[28] = ret; Add g_assert_not_reached() to help compiler, as suggested by Laurent. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu>
2024-09-27Merge tag 'pull-tcg-20240922' of https://gitlab.com/rth7680/qemu into stagingPeter Maydell
target/ppc: Fix lxvx/stxvx facility check linux-user: update syscall_nr.h to Linux v6.10 linux-user: update syscall.tbl to Linux v6.11 tcg: Fix iteration step in 32-bit gvec operation tcg: Propagate new TCGOp to add_as_label_use tcg/*: Do not expand cmp_vec, cmpsel_vec early tcg/optimize: Fold movcond with true and false values identical tcg/optimize: Optimize cmp_vec and cmpsel_vec tcg/optimize: Optimize bitsel_vec tcg/i386: Optimize cmpsel with constant 0 operand 3. tcg/i386: Implement cmp_vec with avx512 insns tcg/i386: Implement cmpsel_vec with avx512 insns tcg/i386: Implement vector TST{EQ,NE} for avx512 tcg/ppc: Implement cmpsel_vec and optimize with constant 0/-1 arguments tcg/s390x: Implement cmpsel_vec and optimize with constant 0/-1 arguments # -----BEGIN PGP SIGNATURE----- # # iQFQBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmbwBsIdHHJpY2hhcmQu # aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV/bzwf40V8fsRhfc8u/k2Xw # +bXyfyX7ydgB+82YoO71+Wy15ntmYmbL/6O9kGuJXWX8HRDrAR8Js9zDgveysw5m # m/EG+XAbVjYhjaoaaz2nfr+5auQoos9NoCji3s3UJln6sCuZ2Enl0DTFluoHZfgr # /YVAghJ4dwH0hfzO9kmsKmJ9I19HugMMN4dNvEcjQyDDUhgGGjkUaRtGNxwuiwuf # ArL2XhFauXgloryDmpUKQ0BJJ0t8rdPlaRJ8dHqJUnJwav0TW3QVXbrs8gOkmmbg # 9plYTC9DlTguQobvapCDVjiGy/6yuSF/AUpcdQbTRtTi3BrzhTydfLlOtI64GtaQ # OBKd # =ID/g # -----END PGP SIGNATURE----- # gpg: Signature made Sun 22 Sep 2024 13:00:02 BST # 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-tcg-20240922' of https://gitlab.com/rth7680/qemu: (31 commits) linux-user: update syscall.tbl to Linux v6.11 linux-user,loongarch: move to syscalltbl file linux-user,hexagon: move to syscalltbl file linux-user,riscv: move to syscalltbl file linux-user,openrisc: move to syscalltbl file linux-user,aarch64: move to syscalltbl file linux-user: update syscall.tbl to Linux v6.10 linux-user, mips: update syscall-args-o32.c.inc to Linux v6.10 linux-user: update syscall_nr.h to Linux v6.10 target/ppc: Fix lxvx/stxvx facility check tcg/s390x: Optimize cmpsel with constant 0/-1 arguments tcg/s390x: Implement cmpsel_vec tcg/ppc: Optimize cmpsel with constant 0/-1 arguments tcg/ppc: Implement cmpsel_vec tcg/i386: Implement vector TST{EQ,NE} for avx512 tcg/i386: Implement cmpsel_vec with avx512 insns tcg/i386: Add predicate parameters to tcg_out_evex_opc tcg/i386: Implement cmp_vec with avx512 insns tcg/i386: Optimize cmpsel with constant 0 operand 3. tcg/optimize: Optimize bitsel_vec ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-22linux-user: update syscall.tbl to Linux v6.11Laurent Vivier
Updated running scripts/update-syscalltbl.sh Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20240920151034.859533-7-laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-22linux-user,loongarch: move to syscalltbl fileLaurent Vivier
Since kernel v6.11 loongarch has moved from syscall_nr.h file to syscall.tbl (26a3b85bac08 ("loongarch: convert to generic syscall table")) Update linux-user scripts to be able to retrieve syscall numbers from linux syscall.tbl instead of syscall_nr.h. New syscall.tbl is imported from linux v6.11 using updated scripts/update-syscalltbl.sh Remove scripts/gensyscalls.sh that is now useless. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20240920151034.859533-6-laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-22linux-user,hexagon: move to syscalltbl fileLaurent Vivier
Since kernel v6.11 hexagon has moved from syscall_nr.h file to syscall.tbl (36d69c29759e ("hexagon: use new system call table")) Update linux-user scripts to be able to retrieve syscall numbers from linux syscall.tbl instead of syscall_nr.h. New syscall.tbl is imported from linux v6.11 using updated scripts/update-syscalltbl.sh Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20240920151034.859533-5-laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-22linux-user,riscv: move to syscalltbl fileLaurent Vivier
Since kernel v6.11 riscv has moved from syscall_nr.h file to syscall.tbl (3db80c999deb ("riscv: convert to generic syscall table")) Update linux-user scripts to be able to retrieve syscall numbers from linux syscall.tbl instead of syscall_nr.h. New syscall.tbl is imported from linux v6.11 using updated scripts/update-syscalltbl.sh Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20240920151034.859533-4-laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-22linux-user,openrisc: move to syscalltbl fileLaurent Vivier
Since kernel v6.11 openrisc has moved from syscall_nr.h file to syscall.tbl (See 77122bf9e3df ("openrisc: convert to generic syscall table")) Update linux-user scripts to be able to retrieve syscall numbers from linux syscall.tbl instead of syscall_nr.h. New syscall.tbl is imported from linux v6.11 using updated scripts/update-syscalltbl.sh Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20240920151034.859533-3-laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-22linux-user,aarch64: move to syscalltbl fileLaurent Vivier
Since kernel v6.11 aarch64 has moved from syscall_nr.h file to syscall_64.tbl (See e632bca07c8e ("arm64: generate 64-bit syscall.tbl")) Update linux-user scripts to be able to retrieve syscall numbers from linux syscall_64.tbl instead of syscall_nr.h. New syscall_64.tbl is imported from linux v6.11 using updated scripts/update-syscalltbl.sh Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20240920151034.859533-2-laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-22linux-user: update syscall.tbl to Linux v6.10Laurent Vivier
Updated running scripts/update-syscalltbl.sh Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20240918074256.720617-4-laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-22linux-user, mips: update syscall-args-o32.c.inc to Linux v6.10Laurent Vivier
Updated running scripts/update-mips-syscall-args.sh Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20240918074256.720617-3-laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-22linux-user: update syscall_nr.h to Linux v6.10Laurent Vivier
Automatically generated using scripts/gensyscalls.sh Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Brian Cain <bcain@quicinc.com> Message-ID: <20240918074256.720617-2-laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-20license: Update deprecated SPDX tag GPL-2.0 to GPL-2.0-onlyPhilippe Mathieu-Daudé
The 'GPL-2.0' license identifier has been deprecated since license list version 3.0 [1] and replaced by the 'GPL-2.0-only' tag [2]. [1] https://spdx.org/licenses/GPL-2.0.html [2] https://spdx.org/licenses/GPL-2.0-only.html Mechanical patch running: $ sed -i -e s/GPL-2.0/GPL-2.0-only/ \ $(git grep -l 'SPDX-License-Identifier: GPL-2.0[ $]' \ | egrep -v '^linux-headers|^include/standard-headers') Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2024-09-20linux-user/syscall.c: eliminate other explicit LFS usagesMichael Tokarev
Since we alwasy build with LFS enabled, and with -D_FILE_OFFSET_BITS=64 in particular, there is no need to use 64bit versions of various system calls and constants, regular ones will do just fine. Eliminate a few last uses of the following constructs in linux-user/syscall.c: off64_t ftruncate64() lseek64() pread64() pwrite64() This way it can be built on systems where the 64bit variants of everything is not defined (since the system always uses 64bit variants), such as on recent MUSL. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2215 Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-20linux-user/syscall.c: drop 64 suffix from flock64 &CoMichael Tokarev
Since we are always building with LFS enabled, in particular with -D_FILE_OFFSET_BITS=64, we should always have struct flock mapped to the 64bit variant (with off64_t), and F_GETLK mapped to F_GETLK64 etc, automatically. So there should be no need to explicitly use the "64" suffix for these things anymore. Also fix a misleading comment near safe_fcntl telling us to always use flock64 (since v2.6.0-1311-g435da5e7092a "linux-user: Use safe_syscall wrapper for fcntl"). Reference: https://gitlab.com/qemu-project/qemu/-/issues/2215 Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-13linux-user: Remove support for CRIS targetPhilippe Mathieu-Daudé
As per the deprecation notice in commit c7bbef4023: The CRIS architecture was pulled from Linux in 4.17 and the compiler is no longer packaged in any distro making it harder to run the `check-tcg` tests. Unless we can improve the testing situation there is a chance the code will bitrot without anyone noticing. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Edgar E. Iglesias <edgar.iglesias@amd.com> Message-ID: <20240904143603.52934-5-philmd@linaro.org>
2024-08-21linux-user: Handle short reads in mmap_h_gt_gRichard Henderson
In particular, if an image has a large bss, we can hit EOF before reading all host_len bytes of the mapping. Create a helper, mmap_pread to handle the job for both the larger block in mmap_h_gt_g itself, as well as the smaller block in mmap_frag. Cc: qemu-stable@nongnu.org Fixes: eb5027ac618 ("linux-user: Split out mmap_h_gt_g") Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2504 Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240820050848.165253-2-richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-08-20linux-user/mips: Select Loongson CPU for Loongson binariesPhilippe Mathieu-Daudé
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240814133928.6746-5-philmd@linaro.org>
2024-08-20linux-user/mips: Select MIPS64R2-generic for Rel2 binariesPhilippe Mathieu-Daudé
Cc: YunQiang Su <syq@debian.org> Reported-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240814133928.6746-4-philmd@linaro.org>
2024-08-20linux-user/mips: Select Octeon68XX CPU for Octeon binariesPhilippe Mathieu-Daudé
The Octeon68XX CPU is available since commit 9a6046a655 ("target/mips: introduce Cavium Octeon CPU model"). Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1722 Reported-by: Johnathan Hữu Trí <nhtri2003@gmail.com> Suggested-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240814133928.6746-3-philmd@linaro.org>
2024-08-20linux-user/mips: Do not try to use removed R5900 CPUPhilippe Mathieu-Daudé
R5900 emulation was removed in commit 823f2897bd. Remove it from ELF parsing in order to avoid: $ qemu-mipsn32 ./test5900 qemu-mipsn32: unable to find CPU model 'R5900' This reverts commit 4d9e5a0eb7df6e98ac6cf5e16029f35dd05b9537. Fixes: 823f2897bd ("target/mips: Disable R5900 support") Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240814133928.6746-2-philmd@linaro.org>
2024-08-15linux-user: Preserve NULL hit in target_mmap subroutinesRichard Henderson
Do not pass guest_base to the host mmap instead of zero hint. Cc: qemu-stable@nongnu.org Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2353 Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-08-05linux-user/elfload: Fix pr_pid values in core filesIlya Leoshkevich
Analyzing qemu-produced core dumps of multi-threaded apps runs into: (gdb) info threads [...] 21 Thread 0x3ff83cc0740 (LWP 9295) warning: Couldn't find general-purpose registers in core file. <unavailable> in ?? () The reason is that all pr_pid values are the same, because the same TaskState is used for all CPUs when generating NT_PRSTATUS notes. Fix by using TaskStates associated with individual CPUs. Cc: qemu-stable@nongnu.org Fixes: 243c47066253 ("linux-user/elfload: Write corefile elf header in one block") Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20240801202340.21845-1-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-07-30linux-user: open_self_stat: Implement num_threadsFabio D'Urso
The num_threads field reports the total number of threads in the process. In QEMU, this is equal to the number of CPU instances. Signed-off-by: Fabio D'Urso <fdurso@google.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-ID: <20240619194109.248066-1-fdurso@google.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-07-30linux-user/main: Check errno when getting AT_EXECFDVivian Wang
It's possible for AT_EXECFD to end up with a valid value of 0. Check errno when using qemu_getauxval instead of return value to handle this case. Not handling this case leads to a confusing condition where the executable ends up as fd 0, i.e. stdin. Signed-off-by: Vivian Wang <uwu@dram.page> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Fixes: 0b959cf5e4cc ("linux-user: Use qemu_getauxval for AT_EXECFD") Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2448 Message-ID: <20240723100545.405476-3-uwu@dram.page> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
generated by cgit v1.2.3 (git 2.26.2) at 2025-02-16 19:20:37 +0000