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Re: [PATCH 2/2] [AArch64] Add more debugging output to aarch64_displaced_step_fixup


On 1/9/20 1:14 PM, Alan Hayward wrote:


On 30 Dec 2019, at 16:25, Luis Machado <luis.machado@linaro.org> wrote:

While debugging the step-over-syscall problem, i wanted to see a bit more
debugging output to try to determine the root cause.

This patch does this.

gdb/ChangeLog:

2019-12-30  Luis Machado  <luis.machado@linaro.org>

	* aarch64-tdep.c (aarch64_displaced_step_fixup): Add more debugging
	output.

Signed-off-by: Luis Machado <luis.machado@linaro.org>
---
gdb/aarch64-tdep.c | 24 +++++++++++++++++++++++-
1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/gdb/aarch64-tdep.c b/gdb/aarch64-tdep.c
index a639b753cd..2d6c5a4bcb 100644
--- a/gdb/aarch64-tdep.c
+++ b/gdb/aarch64-tdep.c
@@ -3058,8 +3058,16 @@ aarch64_displaced_step_fixup (struct gdbarch *gdbarch,
   /* Fetch the current PC, after the displaced execution took place.  */
   regcache_cooked_read_unsigned (regs, AARCH64_PC_REGNUM, &pc);

+  if (debug_displaced)
+    debug_printf ("displaced: PC after stepping: %s (was %s).\n",
+		  paddress (gdbarch, pc), paddress (gdbarch, to));

Minor nit: Capital letter for the first word “Displaced”.
Ditto for the rest of the patch.
Otherwise ok.
Once 1/2 is okayed, happy for updated version of this to be pushed without another review.


I'll get this fixed. Thanks!


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