From FEDORA_PATCHES Mon Sep 17 00:00:00 2001 From: Pedro Franco de Carvalho Date: Wed, 7 Jul 2021 15:44:29 -0400 Subject: gdb-rhbz1854784-powerpc-remove-region-limit-dawr-1of7.patch ;; Backport "Add low_new_clone method to linux_nat_target." ;; (Pedro Franco de Carvalho, RH BZ 1854784) This patch adds a low_new_clone method to linux_nat_target, called after a PTRACE_EVENT_CLONE is detected, similar to how low_new_fork is called after PTRACE_EVENT_(V)FORK. This is useful for targets that need to copy state associated with a thread that is inherited across clones. gdb/ChangeLog: 2020-03-30 Pedro Franco de Carvalho * linux-nat.h (low_new_clone): New method. * linux-nat.c (linux_handle_extended_wait): Call low_new_clone. diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c --- a/gdb/linux-nat.c +++ b/gdb/linux-nat.c @@ -2020,6 +2020,10 @@ linux_handle_extended_wait (struct lwp_info *lp, int status) inferior. */ linux_target->low_new_fork (lp, new_pid); } + else if (event == PTRACE_EVENT_CLONE) + { + linux_target->low_new_clone (lp, new_pid); + } if (event == PTRACE_EVENT_FORK && linux_fork_checkpointing_p (lp->ptid.pid ())) diff --git a/gdb/linux-nat.h b/gdb/linux-nat.h --- a/gdb/linux-nat.h +++ b/gdb/linux-nat.h @@ -160,6 +160,10 @@ public: virtual void low_new_fork (struct lwp_info *parent, pid_t child_pid) {} + /* The method to call, if any, when a new clone event is detected. */ + virtual void low_new_clone (struct lwp_info *parent, pid_t child_lwp) + {} + /* The method to call, if any, when a process is no longer attached. */ virtual void low_forget_process (pid_t pid)