[PATCH] Enable hardware single step for m68k in GDBServer

[PATCH] Enable hardware single step for m68k in GDBServer

[Andreas Schwab]

Linux/m68k supports PTRACE_SINGLESTEP.

Andreas.

	* linux-m68k-low.c (m68k_supports_hardware_single_step): New
	function.
	(struct linux_target_ops) <supports_hardware_single_step>: Initialize.

diff --git a/gdb/gdbserver/linux-m68k-low.c b/gdb/gdbserver/linux-m68k-low.c
index 9fdcf2aed4..15d161f2b5 100644
--- a/gdb/gdbserver/linux-m68k-low.c
+++ b/gdb/gdbserver/linux-m68k-low.c
@@ -199,6 +199,14 @@ m68k_arch_setup (void)
   current_process ()->tdesc = tdesc_m68k;
 }
 
+/* Support for hardware single step.  */
+
+static int
+m68k_supports_hardware_single_step (void)
+{
+  return 1;
+}
+
 struct linux_target_ops the_low_target = {
   m68k_arch_setup,
   m68k_regs_info,
@@ -212,6 +220,29 @@ struct linux_target_ops the_low_target = {
   NULL,
   2,
   m68k_breakpoint_at,
+  NULL, /* supports_z_point_type */
+  NULL, /* insert_point */
+  NULL, /* remove_point */
+  NULL, /* stopped_by_watchpoint */
+  NULL, /* stopped_data_address */
+  NULL, /* collect_ptrace_register */
+  NULL, /* supply_ptrace_register */
+  NULL, /* siginfo_fixup */
+  NULL, /* new_process */
+  NULL, /* delete_process */
+  NULL, /* new_thread */
+  NULL, /* delete_thread */
+  NULL, /* new_fork */
+  NULL, /* prepare_to_resume */
+  NULL, /* process_qsupported */
+  NULL, /* supports_tracepoints */
+  NULL, /* get_thread_area */
+  NULL, /* install_fast_tracepoint_jump_pad */
+  NULL, /* emit_ops */
+  NULL, /* get_min_fast_tracepoint_insn_len */
+  NULL, /* supports_range_stepping */
+  NULL, /* breakpoint_kind_from_current_state */
+  m68k_supports_hardware_single_step,
 };
 
 void
-- 
2.15.0


-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."

Re: [PATCH] Enable hardware single step for m68k in GDBServer

[Yao Qi]

On Mon, Nov 13, 2017 at 3:10 PM, Andreas Schwab <schwab@suse.de> wrote:
> Linux/m68k supports PTRACE_SINGLESTEP.
>
> Andreas.
>
>         * linux-m68k-low.c (m68k_supports_hardware_single_step): New
>         function.
>         (struct linux_target_ops) <supports_hardware_single_step>: Initialize.
>

Patch is good to me.

-- 
Yao (齐尧)