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Committed, MMIX: fix ld orphan placement bugs. Ok for 2.23?


I'd like to put this on the 2.23 branch too, please?
And <http://sourceware.org/ml/binutils/2012-09/msg00008.html>
(FAIL: gas/mmix/fb-2)?

Fixing orphan section bugs noticed in <http://gcc.gnu.org/PR54373>.
Testsuite additions obviously derived from that.

Committed to trunk.

Speaking of .tm_clone_table, isn't it needed to add a new output
section in elf.sc, like for .jcr, with a KEEP, or else the contents
will be GC:ed?  Maybe section groups handle that these days?

ld:
	* emultempl/mmo.em (mmo_place_orphan): Rewrite to also attach
	orphan sections to .data and .bss output sections, not just .text.
	When giving up on finding a suitable output section, attach to any
	output section other than .MMIX.reg_contents, if it exists.
	* scripttempl/mmo.sc: Move output debug sections to just before
	.MMIX.reg_contents.  Add .gnu.attributes.  Add new . = . NOP
	assignments and move end-of-section provide-symbols after them
	to force the end-of-section symbols to the address after orphan
	placement.  Add SORT_NONE to .init and .fini sections.

ld/testsuite:
	* ld-mmix/sec-1.d, ld-mmix/sec-3.d: Force end-of-section symbols
	to be emitted and checked.
	* ld-mmix/data-1.s, ld-mmix/orph-.d, ld-mmix/orph-awp.d,
	ld-mmix/orph-d-a.d, ld-mmix/orph-d-awn.d, ld-mmix/orph-d-awp.d,
	ld-mmix/orph-d-awpe.d, ld-mmix/orph-d.d, ld-mmix/orph-dc-ap.d,
	ld-mmix/orph-dc-awp.d, ld-mmix/orph-dc.d, ld-mmix/tm-ae.s,
	ld-mmix/tm-ape.s, ld-mmix/tm-awne.s, ld-mmix/tm-awpe.s,
	ld-mmix/tm-d-ap.s, ld-mmix/tm-d-awp.s, ld-mmix/tm-d.s,
	ld-mmix/tm-e.s, ld-mmix/tm-orph1.s: New test files.

Index: emultempl/mmo.em
===================================================================
RCS file: /cvs/src/src/ld/emultempl/mmo.em,v
retrieving revision 1.28
diff -p -u -r1.28 mmo.em
--- emultempl/mmo.em	14 May 2012 19:45:28 -0000	1.28
+++ emultempl/mmo.em	9 Sep 2012 16:12:56 -0000
@@ -53,22 +53,49 @@ mmo_place_orphan (asection *s,
 		  const char *secname,
 		  int constraint ATTRIBUTE_UNUSED)
 {
-  static struct orphan_save hold_text =
-    {
-      MMO_TEXT_SECTION_NAME,
-      SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
-      0, 0, 0, 0
-    };
-  struct orphan_save *place;
+  static struct
+  {
+    flagword nonzero_flags;
+    struct orphan_save orphansave;
+  } holds[] =
+      {
+	{
+	  SEC_CODE | SEC_READONLY,
+	  {
+	    MMO_TEXT_SECTION_NAME,
+	    SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
+	    0, 0, 0, 0
+	  }
+	},
+	{
+	  SEC_LOAD | SEC_DATA,
+	  {
+	    MMO_DATA_SECTION_NAME,
+	    SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
+	    0, 0, 0, 0
+	  }
+	},
+	{
+	  SEC_ALLOC,
+	  {
+	    ".bss",
+	    SEC_ALLOC,
+	    0, 0, 0, 0
+	  }
+	}
+      };
+
+  struct orphan_save *place = NULL;
   lang_output_section_statement_type *after;
   lang_output_section_statement_type *os;
+  size_t i;

-  /* We have nothing to say for anything other than a final link.  */
+  /* We have nothing to say for anything other than a final link or
+     for sections that are excluded.  */
   if (link_info.relocatable
-      || (s->flags & (SEC_EXCLUDE | SEC_LOAD)) != SEC_LOAD)
+      || (s->flags & SEC_EXCLUDE) != 0)
     return NULL;

-  /* Only care for sections we're going to load.  */
   os = lang_output_section_find (secname);

   /* We have an output section by this name.  Place the section inside it
@@ -79,30 +106,65 @@ mmo_place_orphan (asection *s,
       return os;
     }

-  /* If this section does not have .text-type section flags or there's no
-     MMO_TEXT_SECTION_NAME, we don't have anything to say.  */
-  if ((s->flags & (SEC_CODE | SEC_READONLY)) == 0)
-    return NULL;
+  /* Check for matching section type flags for sections we care about.
+     A section without contents can have SEC_LOAD == 0, but we still
+     want it attached to a sane section so the symbols appear as
+     expected.  */
+  if ((s->flags & (SEC_ALLOC | SEC_READONLY)) != SEC_READONLY)
+    for (i = 0; i < sizeof (holds) / sizeof (holds[0]); i++)
+      if ((s->flags & holds[i].nonzero_flags) != 0)
+	{
+	  place = &holds[i].orphansave;
+	  if (place->os == NULL)
+	    place->os = lang_output_section_find (place->name);
+	  break;
+	}
+
+  if (place == NULL)
+    {
+      /* For other combinations, we have to give up, except we make
+	 sure not to place the orphan section after the
+	 linker-generated register section; that'd make it continue
+	 the reg section and we never want that to happen for orphan
+	 sections.  */
+      lang_output_section_statement_type *before;
+      lang_output_section_statement_type *lookup;
+      static struct orphan_save hold_nonreg =
+	{
+	  NULL,
+	  SEC_READONLY,
+	  0, 0, 0, 0
+	};

-  if (hold_text.os == NULL)
-    hold_text.os = lang_output_section_find (hold_text.name);
+      if (hold_nonreg.os == NULL)
+	{
+	  before = lang_output_section_find (MMIX_REG_CONTENTS_SECTION_NAME);

-  place = &hold_text;
-  if (hold_text.os != NULL)
-    after = hold_text.os;
-  else
-    after = &lang_output_section_statement.head->output_section_statement;
+	  /* If we have no such section, all fine; we don't care where
+	     it's placed.  */
+	  if (before == NULL)
+	    return NULL;
+
+	  /* We have to find the oss before this one, so we can use that as
+	     "after".  */
+	  for (lookup = &lang_output_section_statement.head->output_section_statement;
+	       lookup != NULL && lookup->next != before;
+	       lookup = lookup->next)
+	    ;

-  /* If there's an output section by this name, we'll use it, regardless
-     of section flags, in contrast to what's done in elf32.em.  */
-  os = lang_insert_orphan (s, secname, 0, after, place, NULL, NULL);
+	  hold_nonreg.os = lookup;
+	}

-  /* We need an output section for .text as a root, so if there was none
-     (might happen with a peculiar linker script such as in "map
-     addresses", map-address.exp), we grab the output section created
-     above.  */
-  if (hold_text.os == NULL)
-    hold_text.os = os;
+      place = &hold_nonreg;
+    }
+
+  after = place->os;
+  if (after == NULL)
+    return NULL;
+
+  /* If there's an output section by *this* name, we'll use it, regardless
+     of actual section flags, in contrast to what's done in elf32.em.  */
+  os = lang_insert_orphan (s, secname, 0, after, place, NULL, NULL);

   return os;
 }
Index: scripttempl/mmo.sc
===================================================================
RCS file: /cvs/src/src/ld/scripttempl/mmo.sc,v
retrieving revision 1.11
diff -p -u -r1.11 mmo.sc
--- scripttempl/mmo.sc	29 Jun 2012 07:58:46 -0000	1.11
+++ scripttempl/mmo.sc	9 Sep 2012 16:12:56 -0000
@@ -20,12 +20,12 @@ SECTIONS
     /* FIXME: Move .init, .fini, .ctors and .dtors to their own sections.  */
     ${RELOCATING+ PROVIDE (_init_start = .);}
     ${RELOCATING+ PROVIDE (_init = .);}
-    ${RELOCATING+ KEEP (*(.init))}
+    ${RELOCATING+ KEEP (*(SORT_NONE(.init)))}
     ${RELOCATING+ PROVIDE (_init_end = .);}

     ${RELOCATING+ PROVIDE (_fini_start = .);}
     ${RELOCATING+ PROVIDE (_fini = .);}
-    ${RELOCATING+ KEEP (*(.fini))}
+    ${RELOCATING+ KEEP (*(SORT_NONE(.fini)))}
     ${RELOCATING+ PROVIDE (_fini_end = .);}

     /* FIXME: Align ctors, dtors, ehframe.  */
@@ -57,35 +57,17 @@ SECTIONS
     ${RELOCATING+KEEP (*(.eh_frame))}
     ${RELOCATING+*(.gcc_except_table)}

-    ${RELOCATING+ PROVIDE(etext = .);}
-    ${RELOCATING+ PROVIDE(_etext = .);}
-    ${RELOCATING+ PROVIDE(__etext = .);}
     ${RELOCATING+Main = DEFINED (Main) ? Main : (DEFINED (_start) ? _start : ADDR (.text));}
   }

-  .stab 0 : { *(.stab) }
-  .stabstr 0 : { *(.stabstr) }
-  .stab.excl 0 : { *(.stab.excl) }
-  .stab.exclstr 0 : { *(.stab.exclstr) }
-  .stab.index 0 : { *(.stab.index) }
-  .stab.indexstr 0 : { *(.stab.indexstr) }
-  .debug_aranges  0 : { *(.debug_aranges) }
-  .debug_pubnames 0 : { *(.debug_pubnames) }
-  .debug_info     0 : { *(.debug_info) *(.gnu.linkonce.wi.*) }
-  .debug_abbrev   0 : { *(.debug_abbrev) }
-  .debug_line     0 : { *(.debug_line) }
-  .debug_frame    0 : { *(.debug_frame) }
-  .debug_str      0 : { *(.debug_str) }
-  .debug_loc      0 : { *(.debug_loc) }
-  .debug_macinfo  0 : { *(.debug_macinfo) }
-  .debug_ranges   0 : { *(.debug_ranges) }
-
-  /* DWARF 3 */
-  .debug_pubtypes 0 : { *(.debug_pubtypes) }
-  .debug_ranges   0 : { *(.debug_ranges) }
-
-  /* DWARF Extension.  */
-  .debug_macro    0 : { *(.debug_macro) }
+  /* The following NOP assignment and those after .data and .bss, are
+     necessary to get orphan sections adopted by the .text inserted before
+     the following end-section symbols.  An output section would also serve
+     this purpose, but we can't do that.  */
+  . = .;
+  ${RELOCATING+ PROVIDE(etext = .);}
+  ${RELOCATING+ PROVIDE(_etext = .);}
+  ${RELOCATING+ PROVIDE(__etext = .);}

   .data ${RELOCATING+ ${DATA_ADDR}}:
   {
@@ -94,14 +76,13 @@ SECTIONS
     *(.data);
     ${RELOCATING+*(.data.*)}
     ${RELOCATING+*(.gnu.linkonce.d*)}
-
-    ${RELOCATING+ PROVIDE(__Edata = .);}
-
-    /* Deprecated, use __Edata.  */
-    ${RELOCATING+ PROVIDE(edata = .);}
-    ${RELOCATING+ PROVIDE(_edata = .);}
-    ${RELOCATING+ PROVIDE(__edata = .);}
   }
+  . = .;
+  ${RELOCATING+ PROVIDE(__Edata = .);}
+  /* Deprecated, use __Edata.  */
+  ${RELOCATING+ PROVIDE(edata = .);}
+  ${RELOCATING+ PROVIDE(_edata = .);}
+  ${RELOCATING+ PROVIDE(__edata = .);}

   /* At the moment, although perhaps we should, we can't map sections
      without contents to sections *with* contents due to FIXME: a BFD bug.
@@ -115,8 +96,9 @@ SECTIONS
     ${RELOCATING+ *(.bss);}
     ${RELOCATING+*(.bss.*)}
     ${RELOCATING+ *(COMMON);}
-    ${RELOCATING+ PROVIDE(__Ebss = .);}
   }
+  . = .;
+  ${RELOCATING+ PROVIDE(__Ebss = .);}

   /* Deprecated, use __Ebss or __Eall as appropriate.  */
   ${RELOCATING+ PROVIDE(end = .);}
@@ -124,6 +106,30 @@ SECTIONS
   ${RELOCATING+ PROVIDE(__end = .);}
   ${RELOCATING+ PROVIDE(__Eall = .);}

+  .stab 0 : { *(.stab) }
+  .stabstr 0 : { *(.stabstr) }
+  .stab.excl 0 : { *(.stab.excl) }
+  .stab.exclstr 0 : { *(.stab.exclstr) }
+  .stab.index 0 : { *(.stab.index) }
+  .stab.indexstr 0 : { *(.stab.indexstr) }
+  .debug_aranges  0 : { *(.debug_aranges) }
+  .debug_pubnames 0 : { *(.debug_pubnames) }
+  .debug_info     0 : { *(.debug_info) *(.gnu.linkonce.wi.*) }
+  .debug_abbrev   0 : { *(.debug_abbrev) }
+  .debug_line     0 : { *(.debug_line) }
+  .debug_frame    0 : { *(.debug_frame) }
+  .debug_str      0 : { *(.debug_str) }
+  .debug_loc      0 : { *(.debug_loc) }
+  .debug_macinfo  0 : { *(.debug_macinfo) }
+  .debug_ranges   0 : { *(.debug_ranges) }
+
+  /* DWARF 3 */
+  .debug_pubtypes 0 : { *(.debug_pubtypes) }
+  .debug_ranges   0 : { *(.debug_ranges) }
+
+  /* DWARF Extension.  */
+  .debug_macro    0 : { *(.debug_macro) }
+
   .MMIX.reg_contents :
   {
     /* Note that this section always has a fixed VMA - that of its
@@ -140,5 +146,7 @@ SECTIONS
      It can probably be fixed with some amount of work.  */
   /DISCARD/ :
   { ${RELOCATING+ *(.gnu.warning.*);} }
+
+  .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
 }
 EOF
Index: ld-mmix/sec-1.d
===================================================================
RCS file: /cvs/src/src/ld/testsuite/ld-mmix/sec-1.d,v
retrieving revision 1.5
diff -p -u -r1.5 sec-1.d
--- ld-mmix/sec-1.d	3 Jan 2006 07:03:26 -0000	1.5
+++ ld-mmix/sec-1.d	9 Sep 2012 15:42:52 -0000
@@ -1,8 +1,8 @@
 #source: sec-1.s
 #source: start.s
-#ld: -m elf64mmix
+#ld: -m elf64mmix -u _etext -u _edata -u _end
 #objcopy_linked_file: -O mmo
-#objdump: -sh
+#objdump: -sht

 # Test conversion from ELF to mmo with non-mmo-sections present,
 # testing that support.
@@ -21,6 +21,15 @@ Idx Name          Size      VMA
                   CONTENTS, ALLOC, LOAD, DATA
   4 thirdsec      0+a  0+  0+  0+  2\*\*2
                   CONTENTS, READONLY
+
+SYMBOL TABLE:
+#...
+0+1d g +\*ABS\* _etext
+#...
+2000000000000013 g +\*ABS\* __bss_start
+2000000000000013 g +\*ABS\* _edata
+2000000000000018 g +\*ABS\* _end
+
 Contents of section \.text:
  0000 e3fd0001                             .*
 Contents of section secname:
Index: ld-mmix/sec-3.d
===================================================================
RCS file: /cvs/src/src/ld/testsuite/ld-mmix/sec-3.d,v
retrieving revision 1.4
diff -p -u -r1.4 sec-3.d
--- ld-mmix/sec-3.d	11 Oct 2010 08:10:43 -0000	1.4
+++ ld-mmix/sec-3.d	9 Sep 2012 15:35:31 -0000
@@ -1,8 +1,8 @@
 #source: sec-1.s
 #source: start.s
 #source: data1.s
-#ld: -m mmo
-#objdump: -sh
+#ld: -m mmo -u __etext -u __Sdata -u __Edata -u __Sbss -u __Ebss -u __Eall
+#objdump: -sht

 .*:     file format mmo

@@ -20,6 +20,17 @@ Idx Name          Size      VMA
                   CONTENTS, ALLOC, LOAD, DATA
   5 thirdsec      0+a  0+  0+  0+  2\*\*2
                   CONTENTS, READONLY
+
+SYMBOL TABLE:
+#...
+0+30 g +\*ABS\* __etext
+200000000000001c g +\*ABS\* __Ebss
+200000000000001b g +\*ABS\* __Edata
+#...
+200000000000001c g +\*ABS\* __Eall
+20+ g +\.data __Sdata
+200000000000001c g +\*ABS\* __Sbss
+
 Contents of section \.text:
  0000 e3fd0001                             .*
 Contents of section secname:
Index: ld-mmix/data-1.s
===================================================================
RCS file: ld-mmix/data-1.s
diff -N ld-mmix/data-1.s
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/data-1.s	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,2 @@
+	.data
+	OCTA #42
Index: ld-mmix/orph-.d
===================================================================
RCS file: ld-mmix/orph-.d
diff -N ld-mmix/orph-.d
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/orph-.d	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,26 @@
+#as: -linker-allocated-gregs
+#source: start.s
+#source: tm-orph1.s
+#source: tm-e.s
+#ld: -m mmo -u __etext -u __Sdata -u __Edata -u __Sbss -u __Ebss -u __Eall
+#objdump: -rst
+
+# Like orph-d.d but without data.
+
+.*:     file format mmo
+
+SYMBOL TABLE:
+0+ +g +\.text Main
+0+8 +g +\.text __etext
+0+ +g +\.text __TMC_END__
+20+ +g +\*ABS\* __Ebss
+20+ +g +\*ABS\* __Edata
+0+ +g +\.text _start
+20+ +g +\*ABS\* __Eall
+20+ +g +\*ABS\* __Sdata
+20+ +g +\*ABS\* __Sbss
+
+Contents of section \.text:
+ 0000 e3fd0001 23fcfe00 .*
+Contents of section .MMIX.reg_contents:
+ 07f0 00000000 00000007 .*
Index: ld-mmix/orph-awp.d
===================================================================
RCS file: ld-mmix/orph-awp.d
diff -N ld-mmix/orph-awp.d
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/orph-awp.d	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,26 @@
+#as: -linker-allocated-gregs
+#source: start.s
+#source: tm-orph1.s
+#source: tm-awpe.s
+#ld: -m mmo -u __etext -u __Sdata -u __Edata -u __Sbss -u __Ebss -u __Eall
+#objdump: -rst
+
+# Like orph-d-awp.d, but without .data contents.
+
+.*:     file format mmo
+
+SYMBOL TABLE:
+0+ +g +\.text Main
+0+8 +g +\.text __etext
+20+ +g +\*ABS\* __TMC_END__
+20+ +g +\*ABS\* __Ebss
+20+ +g +\*ABS\* __Edata
+0+ +g +\.text _start
+20+ +g +\*ABS\* __Eall
+20+ +g +\*ABS\* __Sdata
+20+ +g +\*ABS\* __Sbss
+
+Contents of section \.text:
+ 0000 e3fd0001 23fcfe00 .*
+Contents of section \.MMIX\.reg_contents:
+ 07f0 20000000 00000007 .*
Index: ld-mmix/orph-d-a.d
===================================================================
RCS file: ld-mmix/orph-d-a.d
diff -N ld-mmix/orph-d-a.d
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/orph-d-a.d	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,30 @@
+#as: -linker-allocated-gregs
+#source: start.s
+#source: data-1.s
+#source: tm-orph1.s
+#source: tm-ae.s
+#ld: -m mmo -u __etext -u __Sdata -u __Edata -u __Sbss -u __Ebss -u __Eall
+#objdump: -rst
+
+# A section that's just allocated (but not writable and no @progbits).
+# Should attach to the .text section due to being read-only.
+
+.*:     file format mmo
+
+SYMBOL TABLE:
+0+ +g +\.text Main
+0+8 +g +\.text __etext
+0+8 +g +\.text __TMC_END__
+20+8 +g +\.data __Ebss
+20+8 +g +\.data __Edata
+0+ +g +\.text _start
+20+8 +g +\.data __Eall
+20+ +g +\.data __Sdata
+20+8 +g +\.data __Sbss
+
+Contents of section \.text:
+ 0000 e3fd0001 23fcfe00 .*
+Contents of section \.data:
+ 2000000000000004 00000042 .*
+Contents of section \.MMIX\.reg_contents:
+ 07f0 00000000 0000000f .*
Index: ld-mmix/orph-d-awn.d
===================================================================
RCS file: ld-mmix/orph-d-awn.d
diff -N ld-mmix/orph-d-awn.d
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/orph-d-awn.d	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,31 @@
+#as: -linker-allocated-gregs
+#source: start.s
+#source: data-1.s
+#source: tm-orph1.s
+#source: tm-awne.s
+#ld: -m mmo -u __etext -u __Sdata -u __Edata -u __Sbss -u __Ebss -u __Eall
+#objdump: -rst
+
+# A section that's "aw",@nobits, i.e. naturally .bss.
+# Should attach to the .bss section (but we'll see it as attached to
+# .data).
+
+.*:     file format mmo
+
+SYMBOL TABLE:
+0+ +g +\.text Main
+0+8 +g +\.text __etext
+20+8 +g +\.data __TMC_END__
+20+8 +g +\.data __Ebss
+20+8 +g +\.data __Edata
+0+ +g +\.text _start
+20+8 +g +\.data __Eall
+20+ +g +\.data __Sdata
+20+8 +g +\.data __Sbss
+
+Contents of section \.text:
+ 0000 e3fd0001 23fcfe00 .*
+Contents of section \.data:
+ 2000000000000004 00000042 .*
+Contents of section \.MMIX\.reg_contents:
+ 07f0 20000000 0000000f .*
Index: ld-mmix/orph-d-awp.d
===================================================================
RCS file: ld-mmix/orph-d-awp.d
diff -N ld-mmix/orph-d-awp.d
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/orph-d-awp.d	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,33 @@
+#as: -linker-allocated-gregs
+#source: start.s
+#source: data-1.s
+#source: tm-orph1.s
+#source: tm-awpe.s
+#ld: -m mmo -u __etext -u __Sdata -u __Edata -u __Sbss -u __Ebss -u __Eall
+#objdump: -rst
+
+# An orphan section (.tm_clone_table) would attach after the register
+# section, and contents and symbols and related relocations would be
+# reduced to be relative to the register section, which is an error.
+# We check the original case ("aw",@progbits, to .data or .bss),
+# PR ld/1xxxx.
+
+.*:     file format mmo
+
+SYMBOL TABLE:
+0+ +g +\.text Main
+0+8 +g +\.text __etext
+20+8 +g +\.data __TMC_END__
+20+8 +g +\.data __Ebss
+20+8 +g +\.data __Edata
+0+ +g +\.text _start
+20+8 +g +\.data __Eall
+20+ +g +\.data __Sdata
+20+8 +g +\.data __Sbss
+
+Contents of section \.text:
+ 0000 e3fd0001 23fcfe00 .*
+Contents of section \.data:
+ 2000000000000004 00000042 .*
+Contents of section \.MMIX\.reg_contents:
+ 07f0 20000000 0000000f .*
Index: ld-mmix/orph-d-awpe.d
===================================================================
RCS file: ld-mmix/orph-d-awpe.d
diff -N ld-mmix/orph-d-awpe.d
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/orph-d-awpe.d	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,13 @@
+#as: -linker-allocated-gregs
+#source: start.s
+#source: data-1.s
+#source: tm-orph1.s
+#source: tm-d.s
+#source: tm-awpe.s
+#ld: -m mmo -u __etext -u __Sdata -u __Edata -u __Sbss -u __Ebss -u __Eall
+#error: overlaps section .text
+
+# Like orph-d-awp.d but with contents in that section.  Also, mismatching
+# section flags for the contents will cause a linker error, but we'll
+# call this a doctor-it-hurts situation; either list the section in
+# the linker script or have consistent section flags.
Index: ld-mmix/orph-d.d
===================================================================
RCS file: ld-mmix/orph-d.d
diff -N ld-mmix/orph-d.d
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/orph-d.d	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,30 @@
+#as: -linker-allocated-gregs
+#source: start.s
+#source: data-1.s
+#source: tm-orph1.s
+#source: tm-e.s
+#ld: -m mmo -u __etext -u __Sdata -u __Edata -u __Sbss -u __Ebss -u __Eall
+#objdump: -rst
+
+# Like orph-d-awp.d but a section without specified flags; should
+# attach to .debug_info, i.e. have address 0.
+
+.*:     file format mmo
+
+SYMBOL TABLE:
+0+ +g +\.text Main
+0+8 +g +\.text __etext
+0+ +g +\.text __TMC_END__
+20+8 +g +\.data __Ebss
+20+8 +g +\.data __Edata
+0+ +g +\.text _start
+20+8 +g +\.data __Eall
+20+ +g +\.data __Sdata
+20+8 +g +\.data __Sbss
+
+Contents of section \.text:
+ 0000 e3fd0001 23fcfe00 .*
+Contents of section \.data:
+ 2000000000000004 00000042 .*
+Contents of section .MMIX.reg_contents:
+ 07f0 00000000 00000007 .*
Index: ld-mmix/orph-dc-ap.d
===================================================================
RCS file: ld-mmix/orph-dc-ap.d
diff -N ld-mmix/orph-dc-ap.d
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/orph-dc-ap.d	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,34 @@
+#as: -linker-allocated-gregs
+#source: start.s
+#source: data-1.s
+#source: tm-orph1.s
+#source: tm-d-ap.s
+#source: tm-ape.s
+#ld: -m mmo -u __etext -u __Sdata -u __Edata -u __Sbss -u __Ebss -u __Eall
+#objdump: -rst
+
+# Like orph-d-a.d but with contents in that section (and with
+# @progbits, which doesn't reflect in flags), making sure it's really
+# treated as .text contents.
+
+.*:     file format mmo
+
+SYMBOL TABLE:
+0+ +g +\.text Main
+0+18 +g +\*ABS\* __etext
+0+18 +g +\*ABS\* __TMC_END__
+20+8 +g +\.data __Ebss
+20+8 +g +\.data __Edata
+0+ +g +\.text _start
+20+8 +g +\.data __Eall
+20+ +g +\.data __Sdata
+20+8 +g +\.data __Sbss
+
+Contents of section \.text:
+ 0000 e3fd0001 23fcfe00  .*
+Contents of section \.tm_clone_table:
+ 0008 000004d2 0000162e 008adf38 00c8860c  .*
+Contents of section \.data:
+ 2000000000000004 00000042 .*
+Contents of section \.MMIX\.reg_contents:
+ 07f0 00000000 0000001f .*
Index: ld-mmix/orph-dc-awp.d
===================================================================
RCS file: ld-mmix/orph-dc-awp.d
diff -N ld-mmix/orph-dc-awp.d
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/orph-dc-awp.d	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,32 @@
+#as: -linker-allocated-gregs
+#source: start.s
+#source: data-1.s
+#source: tm-orph1.s
+#source: tm-d-awp.s
+#source: tm-awpe.s
+#ld: -m mmo -u __etext -u __Sdata -u __Edata -u __Sbss -u __Ebss -u __Eall
+#objdump: -rst
+
+# Like orph-d-awp.d, but with contents in the extra section.
+
+.*:     file format mmo
+
+SYMBOL TABLE:
+0+ +g +\.text Main
+0+8 g +\.text __etext
+2000000000000018 +g +\*ABS\* __TMC_END__
+2000000000000018 g +\*ABS\* __Ebss
+2000000000000018 g +\*ABS\* __Edata
+0+ g +\.text _start
+2000000000000018 g +\*ABS\* __Eall
+20+ g +.data __Sdata
+2000000000000018 g +\*ABS\* __Sbss
+
+Contents of section \.text:
+ 0000 e3fd0001 23fcfe00  .*
+Contents of section \.data:
+ 2000000000000004 00000042  .*
+Contents of section \.tm_clone_table:
+ 2000000000000008 000004d2 0000162e 008adf38 00c8860c  .*
+Contents of section \.MMIX\.reg_contents:
+ 07f0 20000000 0000001f .*
Index: ld-mmix/orph-dc.d
===================================================================
RCS file: ld-mmix/orph-dc.d
diff -N ld-mmix/orph-dc.d
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/orph-dc.d	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,32 @@
+#as: -linker-allocated-gregs
+#source: start.s
+#source: data-1.s
+#source: tm-orph1.s
+#source: tm-d.s
+#source: tm-e.s
+#ld: -m mmo -u __etext -u __Sdata -u __Edata -u __Sbss -u __Ebss -u __Eall
+#objdump: -rst
+
+# Like orph-d.d but with contents in the section without specified flags.
+
+.*:     file format mmo
+
+SYMBOL TABLE:
+0+ +g +\.text Main
+0+8 g +.text __etext
+0+10 +g +\*ABS\* __TMC_END__
+2000000000000008 g +\.data __Ebss
+2000000000000008 g +\.data __Edata
+0+ +g +\.text _start
+2000000000000008 g +\.data __Eall
+2000000000000000 g +\.data __Sdata
+2000000000000008 g +\.data __Sbss
+
+Contents of section \.text:
+ 0000 e3fd0001 23fcfe00 .*
+Contents of section \.data:
+ 2000000000000004 00000042 .*
+Contents of section \.tm_clone_table:
+ 0000 000004d2 0000162e 008adf38 00c8860c .*
+Contents of section .MMIX.reg_contents:
+ 07f0 00000000 00000017 .*
Index: ld-mmix/tm-ae.s
===================================================================
RCS file: ld-mmix/tm-ae.s
diff -N ld-mmix/tm-ae.s
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/tm-ae.s	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,3 @@
+        .section        .tm_clone_table,"a"
+	.global __TMC_END__
+__TMC_END__     IS @
Index: ld-mmix/tm-ape.s
===================================================================
RCS file: ld-mmix/tm-ape.s
diff -N ld-mmix/tm-ape.s
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/tm-ape.s	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,3 @@
+        .section        .tm_clone_table,"a",@progbits
+	.global __TMC_END__
+__TMC_END__     IS @
Index: ld-mmix/tm-awne.s
===================================================================
RCS file: ld-mmix/tm-awne.s
diff -N ld-mmix/tm-awne.s
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/tm-awne.s	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,3 @@
+        .section        .tm_clone_table,"aw",@nobits
+	.global __TMC_END__
+__TMC_END__     IS @
Index: ld-mmix/tm-awpe.s
===================================================================
RCS file: ld-mmix/tm-awpe.s
diff -N ld-mmix/tm-awpe.s
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/tm-awpe.s	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,3 @@
+        .section        .tm_clone_table,"aw",@progbits
+	.global __TMC_END__
+__TMC_END__     IS @
Index: ld-mmix/tm-d-ap.s
===================================================================
RCS file: ld-mmix/tm-d-ap.s
diff -N ld-mmix/tm-d-ap.s
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/tm-d-ap.s	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,3 @@
+        .section        .tm_clone_table,"a",@progbits
+	TETRA 1234,5678
+	TETRA 9101112,13141516
Index: ld-mmix/tm-d-awp.s
===================================================================
RCS file: ld-mmix/tm-d-awp.s
diff -N ld-mmix/tm-d-awp.s
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/tm-d-awp.s	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,3 @@
+        .section        .tm_clone_table,"aw",@progbits
+	TETRA 1234,5678
+	TETRA 9101112,13141516
Index: ld-mmix/tm-d.s
===================================================================
RCS file: ld-mmix/tm-d.s
diff -N ld-mmix/tm-d.s
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/tm-d.s	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,3 @@
+        .section        .tm_clone_table
+	TETRA 1234,5678
+	TETRA 9101112,13141516
Index: ld-mmix/tm-e.s
===================================================================
RCS file: ld-mmix/tm-e.s
diff -N ld-mmix/tm-e.s
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/tm-e.s	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,3 @@
+        .section        .tm_clone_table
+	.global __TMC_END__
+__TMC_END__     IS @
Index: ld-mmix/tm-orph1.s
===================================================================
RCS file: ld-mmix/tm-orph1.s
diff -N ld-mmix/tm-orph1.s
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ ld-mmix/tm-orph1.s	9 Sep 2012 15:35:31 -0000
@@ -0,0 +1,3 @@
+	.text
+f:
+        LDA $252,__TMC_END__+7

brgds, H-P


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