[patch v9 20/23] record-btrace, disas: omit pc prefix

Markus Metzger
2013-03-04T17:08:34Z

Add a disassembly flag to omit the pc prefix and use it in the "record
instruction-history" command of record-btrace.

The pc prefix would appear multiple times in the branch trace disassembly,
which is more confusing than helpful.

2013-03-04 Markus Metzger <markus.t.metzger@intel.com>

* record-btrace.c (btrace_insn_history): Omit the pc prefix in
the instruction history disassembly.
* disasm.c (dump_insns): Omit the pc prefix, if requested.
* disasm.h (DISASSEMBLY_OMIT_PC): New.

---
gdb/disasm.c | 4 +++-
gdb/disasm.h | 1 +
gdb/record.c | 4 ++++
3 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/gdb/disasm.c b/gdb/disasm.c
index 9d61379..e643c2d 100644
--- a/gdb/disasm.c
+++ b/gdb/disasm.c
@@ -122,7 +122,9 @@ dump_insns (struct gdbarch *gdbarch, struct ui_out *uiout,
num_displayed++;
}
ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
- ui_out_text (uiout, pc_prefix (pc));
+
+ if ((flags & DISASSEMBLY_OMIT_PC) == 0)
+ ui_out_text (uiout, pc_prefix (pc));
ui_out_field_core_addr (uiout, "address", gdbarch, pc);

if (!build_address_symbolic (gdbarch, pc, 0, &name, &offset, &filename,
diff --git a/gdb/disasm.h b/gdb/disasm.h
index 20ceb2b..3743ccc 100644
--- a/gdb/disasm.h
+++ b/gdb/disasm.h
@@ -23,6 +23,7 @@
#define DISASSEMBLY_RAW_INSN (0x1 << 1)
#define DISASSEMBLY_OMIT_FNAME (0x1 << 2)
#define DISASSEMBLY_FILENAME (0x1 << 3)
+#define DISASSEMBLY_OMIT_PC (0x1 << 4)

struct ui_out;
struct ui_file;
diff --git a/gdb/record.c b/gdb/record.c
index 8bbd057..43fb990 100644
--- a/gdb/record.c
+++ b/gdb/record.c
@@ -386,6 +386,9 @@ get_insn_history_modifiers (char **arg)
case 'f':
modifiers |= DISASSEMBLY_OMIT_FNAME;
break;
+ case 'p':
+ modifiers |= DISASSEMBLY_OMIT_PC;
+ break;
default:
error (_("Invalid modifier: %c."), *args);
}
@@ -660,6 +663,7 @@ Print disassembled instructions stored in the execution log.\n\
With a /m modifier, source lines are included (if available).\n\
With a /r modifier, raw instructions in hex are included.\n\
With a /f modifier, function names are omitted.\n\
+With a /p modifier, current position markers are omitted.\n\
With no argument, disassembles ten more instructions after the previous \
disassembly.\n\
\"record instruction-history -\" disassembles ten instructions before a \
--
1.7.1