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Introduce procedure use_gdb_stub

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This patch introduces the use_gdb_stub procedure, which allows getting
the right value of the use_gdb_stub variable/property in any all
situations.

When calling it before the $use_gdb_stub global variable has been set,
it will return the value of the use_gdb_stub property from the board
file.  This happens when tests want to bail out early (even before gdb
has been started) when the current test setup is a stub.

Otherwise, it returns the value of the $use_gdb_stub global.

It's possible for these two to differ when a test file overrides the
value of the global.

gdb/testsuite/ChangeLog:

	* lib/gdb.exp (use_gdb_stub): New procedure.
This commit is contained in:
Simon Marchi 2016-05-04 09:27:19 -04:00
parent 4a85cc0925
commit 8929ad8bbc
2 changed files with 24 additions and 0 deletions
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4
gdb/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2016-05-04 Simon Marchi <simon.marchi@ericsson.com>
* lib/gdb.exp (use_gdb_stub): New procedure.
2016-05-03 Yunlian Jiang <yunlian@google.com> 2016-05-03 Yunlian Jiang <yunlian@google.com>
Doug Evans <dje@google.com> Doug Evans <dje@google.com>

20
gdb/testsuite/lib/gdb.exp
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@ -3053,6 +3053,26 @@ proc gdb_is_target_remote {} {
return [gdb_is_target_remote_prompt "$gdb_prompt $"] return [gdb_is_target_remote_prompt "$gdb_prompt $"]
} }
# Return the effective value of use_gdb_stub.
#
# If the use_gdb_stub global has been set (it is set when the gdb process is
# spawned), return that. Otherwise, return the value of the use_gdb_stub
# property from the board file.
#
# This is the preferred way of checking use_gdb_stub, since it allows to check
# the value before the gdb has been spawned and it will return the correct value
# even when it was overriden by the test.
proc use_gdb_stub {} {
global use_gdb_stub
if [info exists use_gdb_stub] {
return $use_gdb_stub
}
return [target_info exists use_gdb_stub]
}
# Return 1 if the current remote target is an instance of our GDBserver, 0 # Return 1 if the current remote target is an instance of our GDBserver, 0
# otherwise. Return -1 if there was an error and we can't tell. # otherwise. Return -1 if there was an error and we can't tell.