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* ld.texinfo (Expression Section): Describe treatment of numbers

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and absolute symbols.
	* ldemul.c (after_open_default): Look up __ld_compatibility.
	* ldexp.c (fold_name): Convert absolute symbols to numbers when
	inside output section definitions, or when __ld_compatibility >= 221.
	(exp_fold_tree_1): Convert numbers to absolute when not in output
	section definition and __ld_compatibility < 221.  Don't always
	convert values outside an output section definition to absolute.
	* ldexp.h (uses_defined): Comment.
	* ldlang.c (ld_compatibility): New variable.
	* ldlang.h (ld_compatibility): Declare.
	* emultempl/aix.em, * emultempl/armcoff.em, * emultempl/beos.em,
	* emultempl/elf32.em, * emultempl/genelf.em, * emultempl/lnk960.em,
	* emultempl/m68kcoff.em, * emultempl/mmo.em, * emultempl/pe.em,
	* emultempl/pep.em, * emultempl/sunos.em, * emultempl/z80.em: Call
	after_open_default from after_open function.
This commit is contained in:
Alan Modra
2010-12-20 13:00:14 +00:00
parent e759c11602
commit 5c3049d2ef
19 changed files with 74 additions and 22 deletions
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16
ld/ldexp.c
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@@ -553,7 +553,9 @@ fold_name (etree_type *tree)
" referenced in expression\n"),
tree->name.name);
}
else if (output_section == bfd_abs_section_ptr)
else if (output_section == bfd_abs_section_ptr
&& (expld.section != bfd_abs_section_ptr
|| ld_compatibility >= 221))
new_number (h->u.def.value + h->u.def.section->output_offset);
else
new_rel (h->u.def.value + h->u.def.section->output_offset,
@@ -700,7 +702,11 @@ exp_fold_tree_1 (etree_type *tree)
switch (tree->type.node_class)
{
case etree_value:
new_number (tree->value.value);
if (expld.section == bfd_abs_section_ptr
&& ld_compatibility < 221)
new_abs (tree->value.value);
else
new_number (tree->value.value);
expld.result.str = tree->value.str;
break;
@@ -860,12 +866,6 @@ exp_fold_tree_1 (etree_type *tree)
memset (&expld.result, 0, sizeof (expld.result));
break;
}
/* Any value not inside an output section statement is an
absolute value. */
if (expld.result.valid_p
&& expld.section == bfd_abs_section_ptr)
make_abs ();
}
void