From: Nick Clifton <nickc@redhat.com>
Date: Wed, 23 Oct 2002 13:24:10 +0000 (+0000)
Subject: Add new command line option "--no-omagic" which undoes the effects of -N.
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=46cc0c0853a70578ae235ce16e8b63b04ddfefa2;p=pf3gnuchains%2Fpf3gnuchains3x.git

Add new command line option "--no-omagic" which undoes the effects of -N.
---

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 2a4080b6f2..9bbbbf3296 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,11 @@
+2002-10-23  Nick Clifton  <nickc@redhat.com>
+
+	* lexsup.c (OPTION_NO_OMAGIC): Define.
+	(ld_options): Add "no-omagic" option.
+	(parse_args): Parse --no-omagic.
+	* ld.texinfo: Document --no-omagic.
+	* NEWS: Mention new option.
+
 2002-10-21  Danny Smith  <dannysmith@users.sourceforeg.net>
 
 	* scripttempl/pe.sc (__RUNTIME_PSEUDO_RELOC_LIST__,
diff --git a/ld/NEWS b/ld/NEWS
index e4edb83f9f..790b263b1e 100644
--- a/ld/NEWS
+++ b/ld/NEWS
@@ -1,5 +1,7 @@
 -*- text -*-
 
+* Added --no-omagic to undo the effects of the -N option.
+
 * Support for Texas Instruments TMS320C4x and TMS320C3x series of
   DSP's contributed by Michael Hayes and Svein E. Seldal.
   
diff --git a/ld/ld.texinfo b/ld/ld.texinfo
index 789e8940bb..edf628d36d 100644
--- a/ld/ld.texinfo
+++ b/ld/ld.texinfo
@@ -660,8 +660,17 @@ Turn off page alignment of sections, and mark the output as
 @item -N
 @itemx --omagic
 Set the text and data sections to be readable and writable.  Also, do
-not page-align the data segment.  If the output format supports Unix
-style magic numbers, mark the output as @code{OMAGIC}.
+not page-align the data segment, and disable linking against shared
+libraries.  If the output format supports Unix style magic numbers,
+mark the output as @code{OMAGIC}.
+
+@kindex --no-omagic
+@cindex OMAGIC
+@item --no-omagic
+This option negates most of the effects of the @option{-N} option.  It
+sets the text section to be read-only, and forces the data segment to
+be page-aligned.  Note - this option does not enable linking against
+shared libraries.  Use @option{-Bdynamic} for this.
 
 @kindex -o @var{output}
 @kindex --output=@var{output}
diff --git a/ld/lexsup.c b/ld/lexsup.c
index bfb0feaaf7..15c7bac2e9 100644
--- a/ld/lexsup.c
+++ b/ld/lexsup.c
@@ -132,6 +132,7 @@ int parsing_defsym = 0;
 #define OPTION_SPARE_DYNAMIC_TAGS	(OPTION_DISCARD_NONE + 1)
 #define OPTION_NO_DEFINE_COMMON		(OPTION_SPARE_DYNAMIC_TAGS + 1)
 #define OPTION_NOSTDLIB			(OPTION_NO_DEFINE_COMMON + 1)
+#define OPTION_NO_OMAGIC		(OPTION_NOSTDLIB + 1)
 
 /* The long options.  This structure is used for both the option
    parsing and the help text.  */
@@ -217,6 +218,8 @@ static const struct ld_option ld_options[] =
   { {"omagic", no_argument, NULL, 'N'},
       'N', NULL, N_("Do not page align data, do not make text readonly"),
       EXACTLY_TWO_DASHES },
+  { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
+      '\0', NULL, N_("Page align data, make text readonly"), EXACTLY_TWO_DASHES },
   { {"output", required_argument, NULL, 'o'},
       'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
   { {NULL, required_argument, NULL, '\0'},
@@ -745,6 +748,12 @@ parse_args (argc, argv)
 	  config.magic_demand_paged = false;
 	  config.dynamic_link = false;
 	  break;
+	case OPTION_NO_OMAGIC:
+	  config.text_read_only = true;
+	  config.magic_demand_paged = true;
+	  /* NB/ Does not set dynamic_link to true.
+	     Use --call-shared or -Bdynamic for this.  */
+	  break;
 	case 'n':
 	  config.magic_demand_paged = false;
 	  config.dynamic_link = false;