/* This module handles expression trees.
Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- 2001, 2002, 2003, 2004, 2005, 2006
+ 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Free Software Foundation, Inc.
Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>.
- This file is part of GLD, the Gnu Linker.
+ This file is part of the GNU Binutils.
- GLD is free software; you can redistribute it and/or modify
+ This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
- GLD is distributed in the hope that it will be useful,
+ This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with GLD; see the file COPYING. If not, write to the Free
- Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
- 02110-1301, USA. */
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+
/* This module is in charge of working out the contents of expressions.
which contains a value, a section to which it is relative and a
valid bit. */
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "bfdlink.h"
#include "ld.h"
#include "ldmain.h"
#include "ldmisc.h"
#include "ldexp.h"
+#include "ldlex.h"
#include <ldgram.h>
#include "ldlang.h"
#include "libiberty.h"
{ MAP, "MAP" },
{ ENTRY, "ENTRY" },
{ NEXT, "NEXT" },
+ { ALIGNOF, "ALIGNOF" },
{ SIZEOF, "SIZEOF" },
{ ADDR, "ADDR" },
{ LOADADDR, "LOADADDR" },
{ CONSTANT, "CONSTANT" },
- { MAX_K, "MAX_K" },
+ { ABSOLUTE, "ABSOLUTE" },
+ { MAX_K, "MAX" },
+ { MIN_K, "MIN" },
+ { ASSERT_K, "ASSERT" },
{ REL, "relocatable" },
{ DATA_SEGMENT_ALIGN, "DATA_SEGMENT_ALIGN" },
{ DATA_SEGMENT_RELRO_END, "DATA_SEGMENT_RELRO_END" },
{
etree_type *new = stat_alloc (sizeof (new->value));
new->type.node_code = INT;
+ new->type.lineno = lineno;
new->value.value = value;
new->value.str = NULL;
new->type.node_class = etree_value;
{
etree_type *new = stat_alloc (sizeof (new->value));
new->type.node_code = INT;
+ new->type.lineno = lineno;
new->value.value = value;
new->value.str = str;
new->type.node_class = etree_value;
{
etree_type *new = stat_alloc (sizeof (new->rel));
new->type.node_code = REL;
+ new->type.lineno = lineno;
new->type.node_class = etree_rel;
new->rel.section = section;
new->rel.value = value;
exp_fold_tree_1 (tree->binary.lhs);
/* The SEGMENT_START operator is special because its first
- operand is a string, not the name of a symbol. */
+ operand is a string, not the name of a symbol. Note that the
+ operands have been swapped, so binary.lhs is second (default)
+ operand, binary.rhs is first operand. */
if (expld.result.valid_p && tree->type.node_code == SEGMENT_START)
{
const char *segment_name;
seg->used = TRUE;
expld.result.value = seg->value;
expld.result.str = NULL;
- expld.result.section = NULL;
+ expld.result.section = expld.section;
break;
}
}
return;
}
else if (expld.section != bfd_abs_section_ptr
- && expld.result.section == bfd_abs_section_ptr
- && (tree->type.node_code == '+'
- || tree->type.node_code == '-'))
+ && expld.result.section == bfd_abs_section_ptr
+ && (tree->type.node_code == '+'
+ || tree->type.node_code == '-'))
{
/* Keep the section of the lhs term. */
expld.result.section = lhs.section;
break;
case DATA_SEGMENT_ALIGN:
+ expld.dataseg.relro = exp_dataseg_relro_start;
if (expld.phase != lang_first_phase_enum
&& expld.section == bfd_abs_section_ptr
&& (expld.dataseg.phase == exp_dataseg_none
if (expld.phase == lang_allocating_phase_enum)
{
expld.dataseg.phase = exp_dataseg_align_seen;
- expld.dataseg.min_base = align_n (expld.dot, maxpage);
+ expld.dataseg.min_base = expld.dot;
expld.dataseg.base = expld.result.value;
expld.dataseg.pagesize = commonpage;
expld.dataseg.maxpagesize = maxpage;
break;
case DATA_SEGMENT_RELRO_END:
+ expld.dataseg.relro = exp_dataseg_relro_end;
if (expld.phase != lang_first_phase_enum
&& (expld.dataseg.phase == exp_dataseg_align_seen
|| expld.dataseg.phase == exp_dataseg_adjust
/* Don't find the real header size if only marking sections;
The bfd function may cache incorrect data. */
if (expld.phase != lang_mark_phase_enum)
- hdr_size = bfd_sizeof_headers (output_bfd, &link_info);
+ hdr_size = bfd_sizeof_headers (link_info.output_bfd, &link_info);
new_abs (hdr_size);
}
break;
+
case DEFINED:
if (expld.phase == lang_first_phase_enum)
lang_track_definedness (tree->name.name);
int def_iteration
= lang_symbol_definition_iteration (tree->name.name);
- h = bfd_wrapped_link_hash_lookup (output_bfd, &link_info,
+ h = bfd_wrapped_link_hash_lookup (link_info.output_bfd,
+ &link_info,
tree->name.name,
FALSE, FALSE, TRUE);
expld.result.value = (h != NULL
|| h->type == bfd_link_hash_common)
&& (def_iteration == lang_statement_iteration
|| def_iteration == -1));
- expld.result.section = bfd_abs_section_ptr;
+ expld.result.section = expld.section;
expld.result.valid_p = TRUE;
}
break;
+
case NAME:
if (expld.phase == lang_first_phase_enum)
;
{
struct bfd_link_hash_entry *h;
- h = bfd_wrapped_link_hash_lookup (output_bfd, &link_info,
+ h = bfd_wrapped_link_hash_lookup (link_info.output_bfd,
+ &link_info,
tree->name.name,
TRUE, FALSE, TRUE);
if (!h)
lang_output_section_statement_type *os;
os = lang_output_section_find (tree->name.name);
- if (os != NULL && os->processed_vma)
+ if (os == NULL)
+ {
+ if (expld.phase == lang_final_phase_enum)
+ einfo (_("%F%S: undefined section `%s' referenced in expression\n"),
+ tree->name.name);
+ }
+ else if (os->processed_vma)
new_rel (0, NULL, os->bfd_section);
}
break;
lang_output_section_statement_type *os;
os = lang_output_section_find (tree->name.name);
- if (os != NULL && os->processed_lma)
+ if (os == NULL)
+ {
+ if (expld.phase == lang_final_phase_enum)
+ einfo (_("%F%S: undefined section `%s' referenced in expression\n"),
+ tree->name.name);
+ }
+ else if (os->processed_lma)
{
if (os->load_base == NULL)
- new_rel (os->bfd_section->lma - os->bfd_section->vma,
- NULL, os->bfd_section);
+ new_abs (os->bfd_section->lma);
else
- exp_fold_tree_1 (os->load_base);
+ {
+ exp_fold_tree_1 (os->load_base);
+ if (expld.result.valid_p)
+ make_abs ();
+ }
}
}
break;
case SIZEOF:
+ case ALIGNOF:
if (expld.phase != lang_first_phase_enum)
{
- int opb = bfd_octets_per_byte (output_bfd);
lang_output_section_statement_type *os;
os = lang_output_section_find (tree->name.name);
if (os == NULL)
- new_abs (0);
+ {
+ if (expld.phase == lang_final_phase_enum)
+ einfo (_("%F%S: undefined section `%s' referenced in expression\n"),
+ tree->name.name);
+ new_abs (0);
+ }
else if (os->processed_vma)
- new_abs (os->bfd_section->size / opb);
+ {
+ bfd_vma val;
+
+ if (tree->type.node_code == SIZEOF)
+ val = (os->bfd_section->size
+ / bfd_octets_per_byte (link_info.output_bfd));
+ else
+ val = (bfd_vma)1 << os->bfd_section->alignment_power;
+
+ new_abs (val);
+ }
}
break;
etree_type value, *new;
value.type.node_code = code;
+ value.type.lineno = lhs->type.lineno;
value.binary.lhs = lhs;
value.binary.rhs = rhs;
value.type.node_class = etree_binary;
etree_type value, *new;
value.type.node_code = code;
+ value.type.lineno = lhs->type.lineno;
value.trinary.lhs = lhs;
value.trinary.cond = cond;
value.trinary.rhs = rhs;
etree_type value, *new;
value.unary.type.node_code = code;
+ value.unary.type.lineno = child->type.lineno;
value.unary.child = child;
value.unary.type.node_class = etree_unary;
exp_fold_tree_no_dot (&value);
etree_type value, *new;
value.name.type.node_code = code;
+ value.name.type.lineno = lineno;
value.name.name = name;
value.name.type.node_class = etree_name;
new = stat_alloc (sizeof (new->assign));
new->type.node_code = code;
+ new->type.lineno = src->type.lineno;
new->type.node_class = etree_assign;
new->assign.src = src;
new->assign.dst = dst;
n = stat_alloc (sizeof (n->assign));
n->assign.type.node_code = '=';
+ n->assign.type.lineno = src->type.lineno;
n->assign.type.node_class = etree_provide;
n->assign.src = src;
n->assign.dst = dst;
n = stat_alloc (sizeof (n->assert_s));
n->assert_s.type.node_code = '!';
+ n->assert_s.type.lineno = exp->type.lineno;
n->assert_s.type.node_class = etree_assert;
n->assert_s.child = exp;
n->assert_s.message = message;
if (expld.result.valid_p)
return expld.result.value;
else if (name != NULL && expld.phase != lang_mark_phase_enum)
- einfo (_("%F%S nonconstant expression for %s\n"), name);
+ einfo (_("%F%S: nonconstant expression for %s\n"), name);
}
return def;
}
if (!expld.result.valid_p)
{
if (name != NULL && expld.phase != lang_mark_phase_enum)
- einfo (_("%F%S nonconstant expression for %s\n"), name);
+ einfo (_("%F%S: nonconstant expression for %s\n"), name);
return def;
}
return expld.result.value;
}
else if (name != NULL && expld.phase != lang_mark_phase_enum)
- einfo (_("%F%S nonconstant expression for %s\n"), name);
+ {
+ lineno = tree->type.lineno;
+ einfo (_("%F%S: nonconstant expression for %s\n"), name);
+ }
}
return def;
}
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