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

Author	SHA1	Message	Date
Richard Henderson	ddc3e74d9c	linux-user: Pass CPUArchState to target_restore_altstack In most cases we were already passing get_sp_from_cpustate directly to the function. In other cases, we were passing a local variable which already contained the same value. In the rest of the cases, we were passing the stack pointer out of env directly. Reviewed by: Warner Losh <imp@bsdimp.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210426025334.1168495-5-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>	5 years ago
Richard Henderson	92bad94836	linux-user: Split out target_restore_altstack Create a function to match target_save_altstack. Fix some style and unlock issues in do_sigaltstack. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210426025334.1168495-2-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>	5 years ago
Peter Maydell	5bfce0b74f	linux-user: Make sigaltstack stacks per-thread The alternate signal stack set up by the sigaltstack syscall is supposed to be per-thread. We were incorrectly implementing it as process-wide. This causes problems for guest binaries that rely on this. Notably the Go runtime does, and so we were seeing crashes caused by races where two guest threads might incorrectly both execute on the same stack simultaneously. Replace the global target_sigaltstack_used with a field sigaltstack_used in the TaskState, and make all the references to the old global instead get a pointer to the TaskState and use the field. Fixes: https://bugs.launchpad.net/qemu/+bug/1696773 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20190725131645.19501-1-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>	7 years ago
Laurent Vivier	465e237bf7	linux-user: introduce target_sigsp() and target_save_altstack() Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180411192347.30228-1-laurent@vivier.eu>	8 years ago
Laurent Vivier	cb6ac802ef	linux-user: define TARGET_ARCH_HAS_SETUP_FRAME Instead of calling setup_frame() conditionally to a list of known targets, define TARGET_ARCH_HAS_SETUP_FRAME if the target provides the function and call it only if the macro is defined. Move declarations of setup_frame() and setup_rt_frame() to linux-user/signal-common.h Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-21-laurent@vivier.eu>	8 years ago
Laurent Vivier	befb7447a0	linux-user: create a dummy per arch signal.c Create a signal-common.h for future use by these new files and use it in the existing signal.c Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-2-laurent@vivier.eu>	8 years ago