From 7974a6050b6e2c44722a533e2d5d9131e7db00ff Mon Sep 17 00:00:00 2001 From: Yao Qi Date: Fri, 28 Apr 2017 09:33:16 +0100 Subject: [MIPS] Use lwpid from lwp_info instead of inferior_ptid RAJESH reported that GDB gets "Couldn't write debug register: No such process." on mips64 when GDB attaches to a multi threaded application. Looks GDB nows PTRACE_GET_WATCH_REGS for inferior_ptid but PTRACE_SET_WATCH_REGS for lwp->ptid, they may be different. gdb: 2017-04-28 Yao Qi * mips-linux-nat.c (mips_linux_new_thread): Get lwpid from lwp_info instead of getting from inferior_ptid. --- gdb/mips-linux-nat.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'gdb/mips-linux-nat.c') diff --git a/gdb/mips-linux-nat.c b/gdb/mips-linux-nat.c index 9596b49..c5c18fd 100644 --- a/gdb/mips-linux-nat.c +++ b/gdb/mips-linux-nat.c @@ -624,14 +624,13 @@ write_watchpoint_regs (void) static void mips_linux_new_thread (struct lwp_info *lp) { - int tid; + long tid = ptid_get_lwp (lp->ptid); - if (!mips_linux_read_watch_registers (ptid_get_lwp (inferior_ptid), + if (!mips_linux_read_watch_registers (tid, &watch_readback, &watch_readback_valid, 0)) return; - tid = ptid_get_lwp (lp->ptid); if (ptrace (PTRACE_SET_WATCH_REGS, tid, &watch_mirror, NULL) == -1) perror_with_name (_("Couldn't write debug register")); } -- cgit v1.1