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btrace: add instruction-history /s and fix documentation

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Add support for the /s modifier of the "record instruction-history" command.  It
behaves exactly like /m and prints disassembled instructions in the order in
which they were recorded with interleaved sources.  We accept /s in addition
to /m to align with the "disassemble" command.

The "record instruction-history" modifiers were not documented.  Document
all of them.

gdb/
	* record.c (get_insn_history_modifiers): Set DISASSEMBLY_SOURCE
	instead of DISASSEMBLY_SOURCE_DEPRECATED.  Also accept /s.
	(_initialize_record): Document the /s modifier.
	* NEWS: Announce record instruction-history's new /s modifier.

doc/
	* gdb.texinfo (Process Record and Replay): Document "record
	instruction-history" modifiers.
This commit is contained in:
Markus Metzger 2015-09-11 10:09:54 +02:00
parent f94cc8975c
commit 0c532a2980
5 changed files with 32 additions and 2 deletions
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5
gdb/doc/ChangeLog
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@ -1,3 +1,8 @@
2015-11-04 Markus Metzger <markus.t.metzger@intel.com>
* gdb.texinfo (Process Record and Replay): Document "record
instruction-history" modifiers.
2015-10-12 Andrew Burgess <andrew.burgess@embecosm.com>
* gdb.texinfo (Frames): Remove 'frame' and 'select-frame'

14
gdb/doc/gdb.texinfo
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@ -6741,6 +6741,20 @@ default, ten instructions are disassembled. This can be changed using
the @code{set record instruction-history-size} command. Instructions
are printed in execution order.
It can also print mixed source+disassembly if you specify the the
@code{/m} or @code{/s} modifier, and print the raw instructions in hex
as well as in symbolic form by specifying the @code{/r} modifier.
The current position marker is printed for the instruction at the
current program counter value. This instruction can appear multiple
times in the trace and the current position marker will be printed
every time. To omit the current position marker, specify the
@code{/p} modifier.
To better align the printed instructions when the trace contains
instructions from more than one function, the function name may be
omitted by specifying the @code{/f} modifier.
Speculatively executed instructions are prefixed with @samp{?}. This
feature is not available for all recording formats.