riscv/qemu: QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org - qemu

QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org

emulation kvm qemu virtualization

History

Filip Bozuta 02e5d7d78e linux-user: Add strace support for printing arguments of syscalls used to lock and unlock memory This patch implements strace argument printing functionality for following syscalls: * mlock, munlock, mlockall, munlockall - lock and unlock memory int mlock(const void addr, size_t len) int munlock(const void addr, size_t len) int mlockall(int flags) int munlockall(void) man page: https://man7.org/linux/man-pages/man2/mlock.2.html Implementation notes: Syscall mlockall() takes an argument that is composed of predefined values which represent flags that determine the type of locking operation that is to be performed. For that reason, a printing function "print_mlockall" was stated in file "strace.list". This printing function uses an already existing function "print_flags()" to print the "flags" argument. These flags are stated inside an array "mlockall_flags" that contains values of type "struct flags". These values are instantiated using an existing macro "FLAG_TARGET()" that crates aproppriate target flag values based on those defined in files '/target_syscall.h'. These target flag values were changed from "TARGET_MLOCKALL_MCL" to "TARGET_MCL_" so that they can be aproppriately set and recognised in "strace.c" with "FLAG_TARGET()". Value for "MCL_ONFAULT" was added in this patch. This value was also added in "syscall.c" in function "target_to_host_mlockall_arg()". Because this flag value was added in kernel version 4.4, it is enwrapped in an #ifdef directive (both in "syscall.c" and in "strace.c") as to support older kernel versions. The other syscalls have only primitive argument types, so the rest of the implementation was handled by stating an appropriate printing format in file "strace.list". Syscall mlock2() is not implemented in "syscall.c" and thus it's argument printing is not implemented in this patch. Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200811164553.27713-4-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>		6 years ago
..
cpu_loop.c	linux-user: move mips/mips64 cpu loop to mips directory	8 years ago
meson.build	meson: linux-user	6 years ago
signal.c	linux-user: move mips/mips64 signal.c parts to mips directory	8 years ago
sockbits.h	linux-user: move mips socket.h definitions to mips/sockbits.h	8 years ago
syscall_n32.tbl	linux-user: update syscall.tbl from linux 0bf999f9c5e7	6 years ago
syscall_n64.tbl	linux-user: update syscall.tbl from linux 0bf999f9c5e7	6 years ago
syscall_nr.h	meson: linux-user	6 years ago
syscallhdr.sh	linux-user, mips64: add syscall table generation support	6 years ago
target_cpu.h	linux-user: create target_structs header to place ipc_perm and shmid_ds	13 years ago
target_elf.h	linux-user: MIPS set cpu to r6 CPU if binary is R6	8 years ago
target_fcntl.h	linux-user: move generic fcntl definitions to generic/fcntl.h	8 years ago
target_signal.h	linux-user: move mips signal definitions to mips/target_signal.h	8 years ago
target_structs.h	linux-user: create target_structs header to place ipc_perm and shmid_ds	13 years ago
target_syscall.h	linux-user: Add strace support for printing arguments of syscalls used to lock and unlock memory	6 years ago
termbits.h	linux-user: Redirect termbits.h for Mips64 to termbits.h for Mips32	10 years ago