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Diffstat (limited to 'gdb/gdbserver/linux-low.c')
-rw-r--r--gdb/gdbserver/linux-low.c27
1 files changed, 23 insertions, 4 deletions
diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
index edff916..d48fdbf 100644
--- a/gdb/gdbserver/linux-low.c
+++ b/gdb/gdbserver/linux-low.c
@@ -282,12 +282,12 @@ can_hardware_single_step (void)
}
/* True if the low target can software single-step. Such targets
- implement the BREAKPOINT_REINSERT_ADDR callback. */
+ implement the GET_NEXT_PCS callback. */
static int
can_software_single_step (void)
{
- return (the_low_target.breakpoint_reinsert_addr != NULL);
+ return (the_low_target.get_next_pcs != NULL);
}
/* True if the low target supports memory breakpoints. If so, we'll
@@ -3960,6 +3960,26 @@ enqueue_pending_signal (struct lwp_info *lwp, int signal, siginfo_t *info)
lwp->pending_signals = p_sig;
}
+/* Install breakpoints for software single stepping. */
+
+static void
+install_software_single_step_breakpoints (struct lwp_info *lwp)
+{
+ int i;
+ CORE_ADDR pc;
+ struct regcache *regcache = get_thread_regcache (current_thread, 1);
+ VEC (CORE_ADDR) *next_pcs = NULL;
+ struct cleanup *old_chain = make_cleanup (VEC_cleanup (CORE_ADDR), &next_pcs);
+
+ pc = get_pc (lwp);
+ next_pcs = (*the_low_target.get_next_pcs) (pc, regcache);
+
+ for (i = 0; VEC_iterate (CORE_ADDR, next_pcs, i, pc); ++i)
+ set_reinsert_breakpoint (pc);
+
+ do_cleanups (old_chain);
+}
+
/* Resume execution of LWP. If STEP is nonzero, single-step it. If
SIGNAL is nonzero, give it that signal. */
@@ -4525,8 +4545,7 @@ start_step_over (struct lwp_info *lwp)
}
else if (can_software_single_step ())
{
- CORE_ADDR raddr = (*the_low_target.breakpoint_reinsert_addr) ();
- set_reinsert_breakpoint (raddr);
+ install_software_single_step_breakpoints (lwp);
step = 0;
}
else