From: H.J. Lu <hjl.tools@gmail.com>
Date: Mon, 26 Oct 2020 11:36:59 +0000 (-0700)
Subject: ld: Add -plugin-save-temps
X-Git-Tag: gdb-15-branchpoint~953
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d9511b64b85296f39ded68f82f7f25ee7d6b25fb;p=thirdparty%2Fbinutils-gdb.git

ld: Add -plugin-save-temps

Add -plugin-save-temps to store plugin intermediate files permanently.
It can be used to exam the final input object files generated from IR
inputs.

	* NEWS: Mention -plugin-save-temps.
	* ld.h (ld_config_type): Add plugin_save_temps.
	* ld.texi: Document -plugin-save-temps.
	* ldlex.h (option_values): Add OPTION_PLUGIN_SAVE_TEMPS.
	* lexsup.c (ld_options): Add -plugin-save-temps.
	(parse_args): Handle OPTION_PLUGIN_SAVE_TEMPS.
	* plugin.c (plugin_call_cleanup): Don't call plugin
	cleanup_handler for -plugin-save-temps.
---

diff --git a/ld/NEWS b/ld/NEWS
index a5a5b9faee2..f70d2157339 100644
--- a/ld/NEWS
+++ b/ld/NEWS
@@ -1,5 +1,7 @@
 -*- text -*-
 
+* Add -plugin-save-temps to store plugin intermediate files permanently.
+
 Changes in 2.42:
 
 * Add -z mark-plt/-z nomark-plt options to x86-64 ELF linker to mark PLT
diff --git a/ld/ld.h b/ld/ld.h
index 54d9079678c..fcdd9a2c083 100644
--- a/ld/ld.h
+++ b/ld/ld.h
@@ -300,6 +300,9 @@ typedef struct
   /* The size of the hash table to use.  */
   unsigned long hash_table_size;
 
+  /* If set, store plugin intermediate files permanently.  */
+  bool plugin_save_temps;
+
   /* If set, print discarded sections in map file output.  */
   bool print_map_discarded;
 
diff --git a/ld/ld.texi b/ld/ld.texi
index 4fda259a552..3cba778c9fb 100644
--- a/ld/ld.texi
+++ b/ld/ld.texi
@@ -1140,6 +1140,10 @@ Omit debugger symbol information (but not all symbols) from the output file.
 Omit (or do not omit) global symbols defined in discarded sections.
 Enabled by default.
 
+@kindex -plugin-save-temps
+@item -plugin-save-temps
+Store the plugin ``temporary'' intermediate files permanently.
+
 @kindex -t
 @kindex --trace
 @cindex input files, displaying
diff --git a/ld/ldlex.h b/ld/ldlex.h
index e5ac2fa7fca..d575562a357 100644
--- a/ld/ldlex.h
+++ b/ld/ldlex.h
@@ -146,6 +146,7 @@ enum option_values
 #if BFD_SUPPORTS_PLUGINS
   OPTION_PLUGIN,
   OPTION_PLUGIN_OPT,
+  OPTION_PLUGIN_SAVE_TEMPS,
 #endif /* BFD_SUPPORTS_PLUGINS */
   OPTION_DEFAULT_SCRIPT,
   OPTION_PRINT_OUTPUT_FORMAT,
diff --git a/ld/lexsup.c b/ld/lexsup.c
index 099dff8ecde..dad3b6059ed 100644
--- a/ld/lexsup.c
+++ b/ld/lexsup.c
@@ -187,6 +187,9 @@ static const struct ld_option ld_options[] =
     '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
   { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
     '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
+  { {"plugin-save-temps", no_argument, NULL, OPTION_PLUGIN_SAVE_TEMPS},
+    '\0', NULL, N_("Store plugin intermediate files permanently"),
+    ONE_DASH },
   { {"flto", optional_argument, NULL, OPTION_IGNORE},
     '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
     ONE_DASH },
@@ -1211,6 +1214,9 @@ parse_args (unsigned argc, char **argv)
 	  if (plugin_opt_plugin_arg (optarg))
 	    einfo (_("%F%P: bad -plugin-opt option\n"));
 	  break;
+	case OPTION_PLUGIN_SAVE_TEMPS:
+	  config.plugin_save_temps = true;
+	  break;
 #endif /* BFD_SUPPORTS_PLUGINS */
 	case 'q':
 	  link_info.emitrelocations = true;
diff --git a/ld/plugin.c b/ld/plugin.c
index f81ab02b3a6..13d29d6b09f 100644
--- a/ld/plugin.c
+++ b/ld/plugin.c
@@ -1367,14 +1367,17 @@ plugin_call_cleanup (void)
     {
       if (curplug->cleanup_handler && !curplug->cleanup_done)
 	{
-	  enum ld_plugin_status rv;
-	  curplug->cleanup_done = true;
-	  called_plugin = curplug;
-	  rv = (*curplug->cleanup_handler) ();
-	  called_plugin = NULL;
-	  if (rv != LDPS_OK)
-	    info_msg (_("%P: %s: error in plugin cleanup: %d (ignored)\n"),
-		      curplug->name, rv);
+	  if (!config.plugin_save_temps)
+	    {
+	      enum ld_plugin_status rv;
+	      curplug->cleanup_done = true;
+	      called_plugin = curplug;
+	      rv = (*curplug->cleanup_handler) ();
+	      called_plugin = NULL;
+	      if (rv != LDPS_OK)
+		info_msg (_("%P: %s: error in plugin cleanup: %d (ignored)\n"),
+			  curplug->name, rv);
+	    }
 	  dlclose (curplug->dlhandle);
 	}
       curplug = curplug->next;