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author | Pedro Alves <pedro@palves.net> | 2023-02-08 16:06:23 +0000 |
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committer | Pedro Alves <pedro@palves.net> | 2023-02-15 20:58:00 +0000 |
commit | 91265a7d7cddc10314335ffcfbfae7159c7cecb1 (patch) | |
tree | 3449a623ebe58d5e59ea3c72eb9be336cc0dbc03 /gdb/NEWS | |
parent | 751495be92b2b319fb66ce4e12b562a0e27c15fe (diff) | |
download | binutils-91265a7d7cddc10314335ffcfbfae7159c7cecb1.zip binutils-91265a7d7cddc10314335ffcfbfae7159c7cecb1.tar.gz binutils-91265a7d7cddc10314335ffcfbfae7159c7cecb1.tar.bz2 |
Add new "$_shell(CMD)" internal function
For testing a following patch, I wanted a way to send a SIGINT to GDB
from a breakpoint condition. And I didn't want to do it from a Python
breakpoint or Python function, as I wanted to exercise non-Python code
paths. So I thought I'd add a new $_shell internal function, that
runs a command under the shell, and returns the exit code. With this,
I could write:
(gdb) b foo if $_shell("kill -SIGINT $gdb_pid") != 0 || <other condition>
I think this is generally useful, hence I'm proposing it here.
Here's the new function in action:
(gdb) p $_shell("true")
$1 = 0
(gdb) p $_shell("false")
$2 = 1
(gdb) p $_shell("echo hello")
hello
$3 = 0
(gdb) p $_shell("foobar")
bash: line 1: foobar: command not found
$4 = 127
(gdb) help function _shell
$_shell - execute a shell command and returns the result.
Usage: $_shell (command)
Returns the command's exit code: zero on success, non-zero otherwise.
(gdb)
NEWS and manual changes included.
Approved-By: Andrew Burgess <aburgess@redhat.com>
Approved-By: Tom Tromey <tom@tromey.com>
Approved-By: Eli Zaretskii <eliz@gnu.org>
Change-Id: I7e36d451ee6b428cbf41fded415ae2d6b4efaa4e
Diffstat (limited to 'gdb/NEWS')
-rw-r--r-- | gdb/NEWS | 10 |
1 files changed, 10 insertions, 0 deletions
@@ -68,6 +68,16 @@ maintenance info frame-unwinders List the frame unwinders currently in effect, starting with the highest priority. +* New convenience function "$_shell", to execute a shell command and + return the result. This lets you run shell commands in expressions. + Some examples: + + (gdb) p $_shell("true") + $1 = 0 + (gdb) p $_shell("false") + $2 = 1 + (gdb) break func if $_shell("some command") == 0 + * MI changes ** mi now reports 'no-history' as a stop reason when hitting the end of the |