btrace: fix gap indication

[deliverable/binutils-gdb.git] / gdb / btrace.c

diff --git a/gdb/btrace.c b/gdb/btrace.c
index d1af128b5a93be954ae8b87011a5b57a1edff448..3b4e60d4a45fa68e7417867038b7289a618cba49 100644 (file)
--- a/gdb/btrace.c
+++ b/gdb/btrace.c
@@ -630,11 +630,12 @@ btrace_compute_ftrace_bts (struct thread_info *tp,
                 beginning.  */
              if (begin != NULL)
                {
-                 warning (_("Recorded trace may be corrupted around %s."),
-                          core_addr_to_string_nz (pc));
-
                  end = ftrace_new_gap (end, BDE_BTS_OVERFLOW);
                  ngaps += 1;
+
+                 warning (_("Recorded trace may be corrupted at instruction "
+                            "%u (pc = %s)."), end->insn_offset - 1,
+                          core_addr_to_string_nz (pc));
                }
              break;
            }
@@ -672,14 +673,15 @@ btrace_compute_ftrace_bts (struct thread_info *tp,
          /* We can't continue if we fail to compute the size.  */
          if (size <= 0)
            {
-             warning (_("Recorded trace may be incomplete around %s."),
-                      core_addr_to_string_nz (pc));
-
              /* Indicate the gap in the trace.  We just added INSN so we're
                 not at the beginning.  */
              end = ftrace_new_gap (end, BDE_BTS_INSN_SIZE);
              ngaps += 1;
 
+             warning (_("Recorded trace may be incomplete at instruction %u "
+                        "(pc = %s)."), end->insn_offset - 1,
+                      core_addr_to_string_nz (pc));
+
              break;
            }
 
@@ -750,11 +752,10 @@ ftrace_add_pt (struct pt_insn_decoder *decoder,
 {
   struct btrace_function *begin, *end, *upd;
   uint64_t offset;
-  int errcode, nerrors;
+  int errcode;
 
   begin = *pbegin;
   end = *pend;
-  nerrors = 0;
   for (;;)
     {
       struct btrace_insn btinsn;
@@ -785,11 +786,29 @@ ftrace_add_pt (struct pt_insn_decoder *decoder,
                 flag.  The ENABLED instruction flag means that we continued
                 from some other instruction.  Indicate this as a trace gap.  */
              if (insn.enabled)
-               *pend = end = ftrace_new_gap (end, BDE_PT_DISABLED);
+               {
+                 *pend = end = ftrace_new_gap (end, BDE_PT_DISABLED);
+                 *ngaps += 1;
+
+                 pt_insn_get_offset (decoder, &offset);
+
+                 warning (_("Non-contiguous trace at instruction %u (offset "
+                            "= 0x%" PRIx64 ", pc = 0x%" PRIx64 ")."),
+                          end->insn_offset - 1, offset, insn.ip);
+               }
 
              /* Indicate trace overflows.  */
              if (insn.resynced)
-               *pend = end = ftrace_new_gap (end, BDE_PT_OVERFLOW);
+               {
+                 *pend = end = ftrace_new_gap (end, BDE_PT_OVERFLOW);
+                 *ngaps += 1;
+
+                 pt_insn_get_offset (decoder, &offset);
+
+                 warning (_("Overflow at instruction %u (offset = 0x%" PRIx64
+                            ", pc = 0x%" PRIx64 ")."), end->insn_offset - 1,
+                          offset, insn.ip);
+               }
            }
 
          upd = ftrace_update_function (end, insn.ip);
@@ -820,19 +839,16 @@ ftrace_add_pt (struct pt_insn_decoder *decoder,
       if (begin == NULL)
        continue;
 
-      pt_insn_get_offset (decoder, &offset);
-
-      warning (_("Failed to decode Intel Processor Trace near trace "
-                "offset 0x%" PRIx64 " near recorded PC 0x%" PRIx64 ": %s."),
-              offset, insn.ip, pt_errstr (pt_errcode (errcode)));
-
       /* Indicate the gap in the trace.  */
       *pend = end = ftrace_new_gap (end, errcode);
       *ngaps += 1;
-    }
 
-  if (nerrors > 0)
-    warning (_("The recorded execution trace may have gaps."));
+      pt_insn_get_offset (decoder, &offset);
+
+      warning (_("Decode error (%d) at instruction %u (offset = 0x%" PRIx64
+                ", pc = 0x%" PRIx64 "): %s."), errcode, end->insn_offset - 1,
+              offset, insn.ip, pt_errstr (pt_errcode (errcode)));
+    }
 }
 
 /* A callback function to allow the trace decoder to read the inferior's