forked from percona/percona-server-mongodb
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
SERVER-50476 created gdb_index scons tool to generate gdb_index
- Loading branch information
Showing
7 changed files
with
313 additions
and
40 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| # Copyright 2020 MongoDB Inc. | ||
| # | ||
| # Permission is hereby granted, free of charge, to any person obtaining | ||
| # a copy of this software and associated documentation files (the | ||
| # "Software"), to deal in the Software without restriction, including | ||
| # without limitation the rights to use, copy, modify, merge, publish, | ||
| # distribute, sublicense, and/or sell copies of the Software, and to | ||
| # permit persons to whom the Software is furnished to do so, subject to | ||
| # the following conditions: | ||
| # | ||
| # The above copyright notice and this permission notice shall be included | ||
| # in all copies or substantial portions of the Software. | ||
| # | ||
| # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY | ||
| # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE | ||
| # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
| # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE | ||
| # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | ||
| # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | ||
| # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
| # | ||
|
|
||
| import SCons | ||
|
|
||
|
|
||
| def _update_builder(env, builder): | ||
|
|
||
| verbose = '' if env.Verbose() else None | ||
|
|
||
| base_action = builder.action | ||
| if not isinstance(base_action, SCons.Action.ListAction): | ||
| base_action = SCons.Action.ListAction([base_action]) | ||
|
|
||
| # There are cases were a gdb-index file is NOT generated from gdb 'save gdb-index' command, | ||
| # mostly shim libraries where there is no code in the library, and the following Actions would | ||
| # then fail. The files are created make sure there is always a file to operate on, if its an | ||
| # empty file then the following actions are basically NOOP, and its cleaner then writing | ||
| # conditions into each action. | ||
|
|
||
| # Because this is all taking under one task, the list action will always run all actions if | ||
| # the target is out of date. So the gdb-index files would always be regenerated, and there is | ||
| # no value in keeping them around, it will just waste disk space. Therefore they should be | ||
| # removed as if they never existed from the task. The build system doesn't need to know about | ||
| # them. | ||
| if env.get('DWARF_VERSION') <= 4: | ||
| base_action.list.extend([ | ||
| SCons.Action.Action( | ||
| 'touch ${TARGET}.gdb-index', | ||
| verbose, | ||
| ), | ||
| SCons.Action.Action( | ||
| '$GDB --batch-silent --quiet --nx --eval-command "save gdb-index ${TARGET.dir}" $TARGET', | ||
| "$GDB_INDEX_GEN_INDEX_STR", | ||
| ), | ||
| SCons.Action.Action( | ||
| '$OBJCOPY --add-section .gdb_index=${TARGET}.gdb-index --set-section-flags .gdb_index=readonly ${TARGET} ${TARGET}', | ||
| "$GDB_INDEX_ADD_SECTION_STR", | ||
| ), | ||
| SCons.Action.Action( | ||
| 'rm -f ${TARGET}.gdb-index', | ||
| verbose, | ||
| ), | ||
| ]) | ||
| else: | ||
| base_action.list.extend([ | ||
| SCons.Action.Action( | ||
| 'touch ${TARGET}.debug_names ${TARGET}.debug_str', | ||
| verbose, | ||
| ), | ||
| SCons.Action.Action( | ||
| '$GDB --batch-silent --quiet --nx --eval-command "save gdb-index -dwarf-5 ${TARGET.dir}" $TARGET', | ||
| "$GDB_INDEX_GEN_INDEX_STR", | ||
| ), | ||
| SCons.Action.Action( | ||
| '$OBJCOPY --dump-section .debug_str=${TARGET}.debug_str.new $TARGET', | ||
| verbose, | ||
| ), | ||
| SCons.Action.Action( | ||
| 'cat ${TARGET}.debug_str >>${TARGET}.debug_str.new', | ||
| verbose, | ||
| ), | ||
| SCons.Action.Action( | ||
| '$OBJCOPY --add-section .debug_names=${TARGET}.debug_names --set-section-flags .debug_names=readonly --update-section .debug_str=${TARGET}.debug_str.new ${TARGET} ${TARGET}', | ||
| "$GDB_INDEX_ADD_SECTION_STR", | ||
| ), | ||
| SCons.Action.Action( | ||
| 'rm -f ${TARGET}.debug_names ${TARGET}.debug_str.new ${TARGET}.debug_str', | ||
| verbose, | ||
| ), | ||
| ]) | ||
|
|
||
| builder.action = base_action | ||
|
|
||
|
|
||
| def generate(env): | ||
| if env.get("OBJCOPY", None) is None: | ||
| env["OBJCOPY"] = env.WhereIs("objcopy") | ||
| if env.get("GDB", None) is None: | ||
| env["GDB"] = env.WhereIs("gdb") | ||
|
|
||
| if not env.Verbose(): | ||
| env.Append( | ||
| GDB_INDEX_GEN_INDEX_STR="Using $GDB to generate index for $TARGET", | ||
| GDB_INDEX_ADD_SECTION_STR="Adding index sections into $TARGET", | ||
| ) | ||
|
|
||
| for builder in ["Program", "SharedLibrary", "LoadableModule"]: | ||
| _update_builder(env, env["BUILDERS"][builder]) | ||
|
|
||
|
|
||
| def exists(env): | ||
| result = False | ||
| if env.TargetOSIs("posix"): | ||
| objcopy = env.get("OBJCOPY", None) or env.WhereIs("objcopy") | ||
| gdb = env.get("GDB", None) or env.WhereIs("gdb") | ||
| try: | ||
| dwarf_version = int(env.get('DWARF_VERSION')) | ||
| except ValueError: | ||
| dwarf_version = None | ||
|
|
||
| unset_vars = [] | ||
| if not objcopy: | ||
| unset_vars += ['OBJCOPY'] | ||
| if not gdb: | ||
| unset_vars += ['GDB'] | ||
| if not dwarf_version: | ||
| unset_vars += ['DWARF_VERSION'] | ||
|
|
||
| if not unset_vars: | ||
| print("Enabled generation of gdb index into binaries.") | ||
| result = True | ||
| else: | ||
| print(f"Disabled generation gdb index because {', '.join(unset_vars)} were not set.") | ||
| return result |
Oops, something went wrong.