From 6876850721768f002bdebf47ea013b6283403d37 Mon Sep 17 00:00:00 2001 From: Pedro Alves Date: Thu, 23 May 2013 17:17:50 +0000 Subject: range stepping: gdbserver (x86 GNU/Linux) This patch adds support for range stepping to GDBserver, teaching it about vCont;r. It'd be easy to enable this for all hardware single-step targets without needing the linux_target_ops hook, however, at least PPC needs special care, due to the fact that PPC atomic sequences can't be hardware single-stepped through, a thing which GDBserver doesn't know about. So this leaves the support limited to x86/x86_64. gdb/ 2013-05-23 Pedro Alves * NEWS: Mention GDBserver range stepping support. gdb/gdbserver/ 2013-05-23 Yao Qi Pedro Alves * linux-low.c (lwp_in_step_range): New function. (linux_wait_1): If the thread was range stepping and stopped outside the stepping range, report the stop to GDB. Otherwise, continue stepping. Add range stepping debug output. (linux_set_resume_request): Copy the step range from the resume request to the lwp. (linux_supports_range_stepping): New. (linux_target_ops) : Set to linux_supports_range_stepping. * linux-low.h (struct linux_target_ops) : New field. (struct lwp_info) : New fields. * linux-x86-low.c (x86_supports_range_stepping): New. (the_low_target) : Set to x86_supports_range_stepping. * server.c (handle_v_cont): Handle 'r' action. (handle_v_requests): Append ";r" if the target supports range stepping. * target.h (struct thread_resume) : New fields. (struct target_ops) : New field. (target_supports_range_stepping): New macro. --- gdb/NEWS | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'gdb/NEWS') diff --git a/gdb/NEWS b/gdb/NEWS index 1a4140d439a..a23e8e3d060 100644 --- a/gdb/NEWS +++ b/gdb/NEWS @@ -95,6 +95,11 @@ vCont;r stub to step through an address range itself, without GDB involvemement at each single-step. +* New features in the GDB remote stub, GDBserver + + ** GDBserver now supports target-assisted range stepping. Currently + enabled on x86/x86_64 GNU/Linux targets. + *** Changes in GDB 7.6 * Target record has been renamed to record-full. -- cgit v1.2.1