riscv/qemu - qemu - Gitea: Git with a cup of tea

Commit Graph

Author	SHA1	Message	Date
Philippe Mathieu-Daudé	4e11165316	user: Move 'thunk.h' from 'exec/user' to 'user' Keep all user emulation headers under the same user/ directory. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240428221450.26460-2-philmd@linaro.org>	2 years ago
Ilya Leoshkevich	4edc98fcc8	{linux,bsd}-user: Pass pid to fork_end() The upcoming follow-fork-mode child support requires knowing the child pid. Pass it down. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20240219141628.246823-6-iii@linux.ibm.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20240305121005.3528075-7-alex.bennee@linaro.org>	2 years ago
Richard Henderson	a3a67f54f0	linux-user: Pass last not end to probe_guest_base Pass the address of the last byte of the image, rather than the first address past the last byte. This avoids overflow when the last page of the address space is involved. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>	3 years ago
Alex Bennée	548c96095d	includes: move tb_flush into its own header This aids subsystems (like gdbstub) that want to trigger a flush without pulling target specific headers. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230302190846.2593720-8-alex.bennee@linaro.org> Message-Id: <20230303025805.625589-8-richard.henderson@linaro.org>	4 years ago
Philippe Mathieu-Daudé	de4143fc77	target/arm: Convert CPUARMState::eabi to boolean 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: 20230206223502.25122-6-philmd@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	4 years ago
Ilya Leoshkevich	892a4f6a75	linux-user: Add partial support for MADV_DONTNEED 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 `26bab757d4` ("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>	4 years ago
Philippe Mathieu-Daudé	0effdc29b5	linux-user: Remove pointless CPU{ARCH}State casts Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220509205728.51912-4-philippe.mathieu.daude@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>	4 years ago
Philippe Mathieu-Daudé	a0939b8916	linux-user: Have do_syscall() use CPUArchState* instead of void* Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220509205728.51912-3-philippe.mathieu.daude@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>	4 years ago
Marc-André Lureau	8905770b27	compiler.h: replace QEMU_NORETURN with G_NORETURN G_NORETURN was introduced in glib 2.68, fallback to G_GNUC_NORETURN in glib-compat. Note that this attribute must be placed before the function declaration (bringing a bit of consistency in qemu codebase usage). Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Warner Losh <imp@bsdimp.com> Message-Id: <20220420132624.2439741-20-marcandre.lureau@redhat.com>	4 years ago
Marc-André Lureau	ee3eb3a7ce	Replace TARGET_WORDS_BIGENDIAN Convert the TARGET_WORDS_BIGENDIAN macro, similarly to what was done with HOST_BIG_ENDIAN. The new TARGET_BIG_ENDIAN macro is either 0 or 1, and thus should always be defined to prevent misuse. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Suggested-by: Halil Pasic <pasic@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220323155743.1585078-8-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>	4 years ago
WANG Xuerui	80f0fe3a85	linux-user: Fix syscall parameter handling for MIPS n32 The MIPS n32 ABI is basically n64 with the address space (i.e. pointer width) shrinked to 32 bits. Meanwhile the current code treats it as o32-like based on TARGET_ABI_BITS, which causes problems with n32 syscalls utilizing 64-bit offsets, like pread64, affecting most (if not all) recently built n32 binaries. This partially solves issue #909 ("qemu-mipsn32(el) user mode emulator fails to execute any recently built n32 binaries"); with this change applied, the built qemu-mipsn32el is able to progress beyond the pread64, and finish _dl_start_user for the "getting ld.so load libc.so" case. The program later dies with SIGBUS, though, due to _dl_start_user not maintaining stack alignment after removing ld.so itself from argv, and qemu-user starting to enforce alignment recently, but that is orthogonal to the issue here; the more common case of chrooting is working, verified with my own-built Gentoo n32 sysroot. (Depending on the exact ISA used, one may have to explicitly specify QEMU_CPU, which is the case for my chroot.) Buglink: https://gitlab.com/qemu-project/qemu/-/issues/909 Signed-off-by: WANG Xuerui <xen0n@gentoo.org> Cc: Laurent Vivier <laurent@vivier.eu> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: Andreas K. Hüttel <dilfridge@gentoo.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220320052259.1610883-1-xen0n@gentoo.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>	4 years ago
Philippe Mathieu-Daudé	f93d0af88d	linux-user: Mark cpu_loop() with noreturn attribute cpu_loop() never exits, so mark it with QEMU_NORETURN. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-By: Warner Losh <imp@bsdimp.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Warner Losh <imp@bsdimp.com> Message-Id: <20211106113916.544587-1-f4bug@amsat.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>	5 years ago
Richard Henderson	0a7e01904d	linux-user: Remove HAVE_SAFE_SYSCALL and hostdep.h All supported hosts now define HAVE_SAFE_SYSCALL, so remove the ifdefs. This leaves hostdep.h empty, so remove it. Reviewed-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>	5 years ago
Peter Maydell	d0a7920eb4	linux-user: Drop unneeded includes from qemu.h Trim down the #includes in qemu.h where we can, either by dropping unneeded headers or by moving them to user-internals.h. This includes deleting a couple of #includes that appear at weird points midway through the header file. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210908154405.15417-10-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>	5 years ago
Peter Maydell	3b249d2661	linux-user: Split linux-user internals out of qemu.h qemu.h is included in various non-linux-user files (which mostly want the TaskState struct and the functions for doing usermode access to guest addresses like lock_user(), unlock_user(), get_user(), etc). Split out the parts that are only used in linux-user itself into a new user-internals.h. This leaves qemu.h with basically three things: the definition of the TaskState struct * the user-access functions and macros * do_brk() all of which are needed by code outside linux-user that includes qemu.h. The addition of all the extra #include lines was done with sed -i '/include.qemu\.h/a #include "user-internals.h"' $(git grep -l 'include.qemu\.h' linux-user) (and then undoing the change to fpa11.h). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210908154405.15417-8-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>	5 years ago

15 Commits (e093934ee184f2a00eacd510ece0c66898991d00)