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CTRY:IE; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:64aa7808-outbound-1.mta.getcheckrecipient.com; PTR:ec2-63-35-35-123.eu-west-1.compute.amazonaws.com; CAT:NONE; SFS:(13230040)(82310400026)(376014)(35042699022)(1800799024)(36860700013); DIR:OUT; SFP:1101; X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Aug 2024 09:15:39.7482 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 571992a6-46b8-4841-bcbc-08dcb20a8328 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d; Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: AM3PEPF0000A79A.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: GV2PR08MB8195 X-Spam-Status: No, score=-6.4 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FORGED_SPF_HELO, SPF_HELO_PASS, SPF_NONE, TXREP, UNPARSEABLE_RELAY autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org Hi, This adds a new GDB parameter 'gcc-dot-cmd' which allows the user to configure the command used to render the CFG within dot-fn. E.g. with this patch the user can change their dot viewer like so: (gdb) show gcc-dot-cmd The current value of 'gcc-dot-cmd' is "dot -Tx11". (gdb) set gcc-dot-cmd xdot (gdb) dot-fn # opens in xdot The second patch in this series adds a hook which users can define in their .gdbinit in order to be called when the GCC extensions have finished loading, thus allowing users to automatically configure gcc-dot-cmd as desired in their .gdbinit. Manually tested by debugging an x86 -> aarch64 cross, changing the parameter, and invoking dot-fn. OK to install? Thanks, Alex gcc/ChangeLog: * gdbhooks.py (GCCDotCmd): New. (gcc_dot_cmd): New. Use it ... (DotFn.invoke): ... here. iff --git a/gcc/gdbhooks.py b/gcc/gdbhooks.py index 92e38880a70..db8ce0d071b 100644 --- a/gcc/gdbhooks.py +++ b/gcc/gdbhooks.py @@ -783,6 +783,18 @@ class DumpFn(gdb.Command): DumpFn() +class GCCDotCmd(gdb.Parameter): + """ + This parameter controls the command used to render dot files within + GCC's dot-fn command. It will be invoked as gcc-dot-cmd . + """ + def __init__(self): + super(GCCDotCmd, self).__init__('gcc-dot-cmd', + gdb.COMMAND_NONE, gdb.PARAM_STRING) + self.value = "dot -Tx11" + +gcc_dot_cmd = GCCDotCmd() + class DotFn(gdb.Command): """ A custom command to show a gimple/rtl function control flow graph. @@ -848,7 +860,8 @@ class DotFn(gdb.Command): return # Show graph in temp file - os.system("( dot -Tx11 \"%s\"; rm \"%s\" ) &" % (filename, filename)) + dot_cmd = gcc_dot_cmd.value + os.system("( %s \"%s\"; rm \"%s\" ) &" % (dot_cmd, filename, filename)) DotFn()