/* This module handles expression trees.
Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+ 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>.
etree_type *
exp_intop (bfd_vma 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 = NULL;
- new->type.node_class = etree_value;
- return new;
+ etree_type *new_e = (etree_type *) stat_alloc (sizeof (new_e->value));
+ new_e->type.node_code = INT;
+ new_e->type.lineno = lineno;
+ new_e->value.value = value;
+ new_e->value.str = NULL;
+ new_e->type.node_class = etree_value;
+ return new_e;
}
etree_type *
exp_bigintop (bfd_vma value, char *str)
{
- 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;
- return new;
+ etree_type *new_e = (etree_type *) stat_alloc (sizeof (new_e->value));
+ new_e->type.node_code = INT;
+ new_e->type.lineno = lineno;
+ new_e->value.value = value;
+ new_e->value.str = str;
+ new_e->type.node_class = etree_value;
+ return new_e;
}
/* Build an expression representing an unnamed relocatable value. */
etree_type *
exp_relop (asection *section, bfd_vma 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;
- return new;
+ etree_type *new_e = (etree_type *) stat_alloc (sizeof (new_e->rel));
+ new_e->type.node_code = REL;
+ new_e->type.lineno = lineno;
+ new_e->type.node_class = etree_rel;
+ new_e->rel.section = section;
+ new_e->rel.value = value;
+ return new_e;
}
static void
static void
fold_binary (etree_type *tree)
{
+ etree_value_type lhs;
exp_fold_tree_1 (tree->binary.lhs);
/* The SEGMENT_START operator is special because its first
expld.result.section = expld.section;
break;
}
+ return;
}
- else if (expld.result.valid_p)
- {
- etree_value_type lhs = expld.result;
- exp_fold_tree_1 (tree->binary.rhs);
- if (expld.result.valid_p)
+ lhs = expld.result;
+ exp_fold_tree_1 (tree->binary.rhs);
+ expld.result.valid_p &= lhs.valid_p;
+
+ if (expld.result.valid_p)
+ {
+ /* If the values are from different sections, or this is an
+ absolute expression, make both the source arguments
+ absolute. However, adding or subtracting an absolute
+ value from a relative value is meaningful, and is an
+ exception. */
+ if (expld.section != bfd_abs_section_ptr
+ && lhs.section == bfd_abs_section_ptr
+ && tree->type.node_code == '+')
{
- /* If the values are from different sections, or this is an
- absolute expression, make both the source arguments
- absolute. However, adding or subtracting an absolute
- value from a relative value is meaningful, and is an
- exception. */
- if (expld.section != bfd_abs_section_ptr
- && lhs.section == bfd_abs_section_ptr
- && tree->type.node_code == '+')
- {
- /* Keep the section of the rhs term. */
- expld.result.value = lhs.value + expld.result.value;
- return;
- }
- else if (expld.section != bfd_abs_section_ptr
- && 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;
- }
- else if (expld.result.section != lhs.section
- || expld.section == bfd_abs_section_ptr)
- {
- make_abs ();
- lhs.value += lhs.section->vma;
- }
+ /* Keep the section of the rhs term. */
+ expld.result.value = lhs.value + expld.result.value;
+ return;
+ }
+ else if (expld.section != bfd_abs_section_ptr
+ && 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;
+ }
+ else if (expld.result.section != lhs.section
+ || expld.section == bfd_abs_section_ptr)
+ {
+ make_abs ();
+ lhs.value += lhs.section->vma;
+ }
- switch (tree->type.node_code)
- {
- case '%':
- if (expld.result.value != 0)
- expld.result.value = ((bfd_signed_vma) lhs.value
- % (bfd_signed_vma) expld.result.value);
- else if (expld.phase != lang_mark_phase_enum)
- einfo (_("%F%S %% by zero\n"));
- break;
+ switch (tree->type.node_code)
+ {
+ case '%':
+ if (expld.result.value != 0)
+ expld.result.value = ((bfd_signed_vma) lhs.value
+ % (bfd_signed_vma) expld.result.value);
+ else if (expld.phase != lang_mark_phase_enum)
+ einfo (_("%F%S %% by zero\n"));
+ break;
- case '/':
- if (expld.result.value != 0)
- expld.result.value = ((bfd_signed_vma) lhs.value
- / (bfd_signed_vma) expld.result.value);
- else if (expld.phase != lang_mark_phase_enum)
- einfo (_("%F%S / by zero\n"));
- break;
+ case '/':
+ if (expld.result.value != 0)
+ expld.result.value = ((bfd_signed_vma) lhs.value
+ / (bfd_signed_vma) expld.result.value);
+ else if (expld.phase != lang_mark_phase_enum)
+ einfo (_("%F%S / by zero\n"));
+ break;
#define BOP(x, y) \
case x: \
expld.result.value = lhs.value y expld.result.value; \
break;
- BOP ('+', +);
- BOP ('*', *);
- BOP ('-', -);
- BOP (LSHIFT, <<);
- BOP (RSHIFT, >>);
- BOP (EQ, ==);
- BOP (NE, !=);
- BOP ('<', <);
- BOP ('>', >);
- BOP (LE, <=);
- BOP (GE, >=);
- BOP ('&', &);
- BOP ('^', ^);
- BOP ('|', |);
- BOP (ANDAND, &&);
- BOP (OROR, ||);
-
- case MAX_K:
- if (lhs.value > expld.result.value)
- expld.result.value = lhs.value;
- break;
+ BOP ('+', +);
+ BOP ('*', *);
+ BOP ('-', -);
+ BOP (LSHIFT, <<);
+ BOP (RSHIFT, >>);
+ BOP (EQ, ==);
+ BOP (NE, !=);
+ BOP ('<', <);
+ BOP ('>', >);
+ BOP (LE, <=);
+ BOP (GE, >=);
+ BOP ('&', &);
+ BOP ('^', ^);
+ BOP ('|', |);
+ BOP (ANDAND, &&);
+ BOP (OROR, ||);
+
+ case MAX_K:
+ if (lhs.value > expld.result.value)
+ expld.result.value = lhs.value;
+ break;
- case MIN_K:
- if (lhs.value < expld.result.value)
- expld.result.value = lhs.value;
- break;
+ case MIN_K:
+ if (lhs.value < expld.result.value)
+ expld.result.value = lhs.value;
+ break;
- case ALIGN_K:
- expld.result.value = align_n (lhs.value, expld.result.value);
- break;
+ case ALIGN_K:
+ expld.result.value = align_n (lhs.value, expld.result.value);
+ 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
- || expld.dataseg.phase == exp_dataseg_adjust
- || expld.dataseg.phase == exp_dataseg_relro_adjust
- || expld.phase == lang_final_phase_enum))
- {
- bfd_vma maxpage = lhs.value;
- bfd_vma commonpage = expld.result.value;
+ 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
+ || expld.dataseg.phase == exp_dataseg_adjust
+ || expld.dataseg.phase == exp_dataseg_relro_adjust
+ || expld.phase == lang_final_phase_enum))
+ {
+ bfd_vma maxpage = lhs.value;
+ bfd_vma commonpage = expld.result.value;
- expld.result.value = align_n (expld.dot, maxpage);
- if (expld.dataseg.phase == exp_dataseg_relro_adjust)
- expld.result.value = expld.dataseg.base;
- else if (expld.dataseg.phase != exp_dataseg_adjust)
+ expld.result.value = align_n (expld.dot, maxpage);
+ if (expld.dataseg.phase == exp_dataseg_relro_adjust)
+ expld.result.value = expld.dataseg.base;
+ else if (expld.dataseg.phase != exp_dataseg_adjust)
+ {
+ expld.result.value += expld.dot & (maxpage - 1);
+ if (expld.phase == lang_allocating_phase_enum)
{
- expld.result.value += expld.dot & (maxpage - 1);
- 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.base = expld.result.value;
- expld.dataseg.pagesize = commonpage;
- expld.dataseg.maxpagesize = maxpage;
- expld.dataseg.relro_end = 0;
- }
+ expld.dataseg.phase = exp_dataseg_align_seen;
+ expld.dataseg.min_base = expld.dot;
+ expld.dataseg.base = expld.result.value;
+ expld.dataseg.pagesize = commonpage;
+ expld.dataseg.maxpagesize = maxpage;
+ expld.dataseg.relro_end = 0;
}
- else if (commonpage < maxpage)
- expld.result.value += ((expld.dot + commonpage - 1)
- & (maxpage - commonpage));
}
- else
- expld.result.valid_p = FALSE;
- 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
- || expld.dataseg.phase == exp_dataseg_relro_adjust
- || expld.phase == lang_final_phase_enum))
- {
- if (expld.dataseg.phase == exp_dataseg_align_seen
- || expld.dataseg.phase == exp_dataseg_relro_adjust)
- expld.dataseg.relro_end = lhs.value + expld.result.value;
+ else if (commonpage < maxpage)
+ expld.result.value += ((expld.dot + commonpage - 1)
+ & (maxpage - commonpage));
+ }
+ else
+ expld.result.valid_p = FALSE;
+ break;
- if (expld.dataseg.phase == exp_dataseg_relro_adjust
- && (expld.dataseg.relro_end
- & (expld.dataseg.pagesize - 1)))
- {
- expld.dataseg.relro_end += expld.dataseg.pagesize - 1;
- expld.dataseg.relro_end &= ~(expld.dataseg.pagesize - 1);
- expld.result.value = (expld.dataseg.relro_end
- - expld.result.value);
- }
- else
- expld.result.value = lhs.value;
+ 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
+ || expld.dataseg.phase == exp_dataseg_relro_adjust
+ || expld.phase == lang_final_phase_enum))
+ {
+ if (expld.dataseg.phase == exp_dataseg_align_seen
+ || expld.dataseg.phase == exp_dataseg_relro_adjust)
+ expld.dataseg.relro_end = lhs.value + expld.result.value;
- if (expld.dataseg.phase == exp_dataseg_align_seen)
- expld.dataseg.phase = exp_dataseg_relro_seen;
+ if (expld.dataseg.phase == exp_dataseg_relro_adjust
+ && (expld.dataseg.relro_end
+ & (expld.dataseg.pagesize - 1)))
+ {
+ expld.dataseg.relro_end += expld.dataseg.pagesize - 1;
+ expld.dataseg.relro_end &= ~(expld.dataseg.pagesize - 1);
+ expld.result.value = (expld.dataseg.relro_end
+ - expld.result.value);
}
else
- expld.result.valid_p = FALSE;
- break;
+ expld.result.value = lhs.value;
- default:
- FAIL ();
+ if (expld.dataseg.phase == exp_dataseg_align_seen)
+ expld.dataseg.phase = exp_dataseg_relro_seen;
}
+ else
+ expld.result.valid_p = FALSE;
+ break;
+
+ default:
+ FAIL ();
}
- else
- expld.result.valid_p = FALSE;
}
}
case CONSTANT:
if (strcmp (tree->name.name, "MAXPAGESIZE") == 0)
- new_abs (bfd_emul_get_maxpagesize (default_target));
+ new_abs (config.maxpagesize);
else if (strcmp (tree->name.name, "COMMONPAGESIZE") == 0)
- new_abs (bfd_emul_get_commonpagesize (default_target));
+ new_abs (config.commonpagesize);
else
einfo (_("%F%S: unknown constant `%s' referenced in expression\n"),
tree->name.name);
h->u.def.section = expld.result.section;
if (tree->type.node_class == etree_provide)
tree->type.node_class = etree_provided;
+
+ /* Copy the symbol type if this is a simple assignment of
+ one symbol to annother. */
+ if (tree->assign.src->type.node_class == etree_name)
+ {
+ struct bfd_link_hash_entry *hsrc;
+
+ hsrc = bfd_link_hash_lookup (link_info.hash,
+ tree->assign.src->name.name,
+ FALSE, FALSE, TRUE);
+ if (hsrc)
+ bfd_copy_link_hash_symbol_type (link_info.output_bfd, h,
+ hsrc);
+ }
+ }
+ else if (expld.phase == lang_final_phase_enum)
+ {
+ h = bfd_link_hash_lookup (link_info.hash, tree->assign.dst,
+ FALSE, FALSE, TRUE);
+ if (h != NULL
+ && h->type == bfd_link_hash_new)
+ h->type = bfd_link_hash_undefined;
}
}
break;
etree_type *
exp_binop (int code, etree_type *lhs, etree_type *rhs)
{
- etree_type value, *new;
+ etree_type value, *new_e;
value.type.node_code = code;
value.type.lineno = lhs->type.lineno;
if (expld.result.valid_p)
return exp_intop (expld.result.value);
- new = stat_alloc (sizeof (new->binary));
- memcpy (new, &value, sizeof (new->binary));
- return new;
+ new_e = (etree_type *) stat_alloc (sizeof (new_e->binary));
+ memcpy (new_e, &value, sizeof (new_e->binary));
+ return new_e;
}
etree_type *
exp_trinop (int code, etree_type *cond, etree_type *lhs, etree_type *rhs)
{
- etree_type value, *new;
+ etree_type value, *new_e;
value.type.node_code = code;
value.type.lineno = lhs->type.lineno;
if (expld.result.valid_p)
return exp_intop (expld.result.value);
- new = stat_alloc (sizeof (new->trinary));
- memcpy (new, &value, sizeof (new->trinary));
- return new;
+ new_e = (etree_type *) stat_alloc (sizeof (new_e->trinary));
+ memcpy (new_e, &value, sizeof (new_e->trinary));
+ return new_e;
}
etree_type *
exp_unop (int code, etree_type *child)
{
- etree_type value, *new;
+ etree_type value, *new_e;
value.unary.type.node_code = code;
value.unary.type.lineno = child->type.lineno;
if (expld.result.valid_p)
return exp_intop (expld.result.value);
- new = stat_alloc (sizeof (new->unary));
- memcpy (new, &value, sizeof (new->unary));
- return new;
+ new_e = (etree_type *) stat_alloc (sizeof (new_e->unary));
+ memcpy (new_e, &value, sizeof (new_e->unary));
+ return new_e;
}
etree_type *
exp_nameop (int code, const char *name)
{
- etree_type value, *new;
+ etree_type value, *new_e;
value.name.type.node_code = code;
value.name.type.lineno = lineno;
if (expld.result.valid_p)
return exp_intop (expld.result.value);
- new = stat_alloc (sizeof (new->name));
- memcpy (new, &value, sizeof (new->name));
- return new;
+ new_e = (etree_type *) stat_alloc (sizeof (new_e->name));
+ memcpy (new_e, &value, sizeof (new_e->name));
+ return new_e;
}
etree_type *
exp_assop (int code, const char *dst, etree_type *src)
{
- etree_type *new;
-
- 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;
- return new;
+ etree_type *new_e;
+
+ new_e = (etree_type *) stat_alloc (sizeof (new_e->assign));
+ new_e->type.node_code = code;
+ new_e->type.lineno = src->type.lineno;
+ new_e->type.node_class = etree_assign;
+ new_e->assign.src = src;
+ new_e->assign.dst = dst;
+ return new_e;
}
/* Handle PROVIDE. */
{
etree_type *n;
- n = stat_alloc (sizeof (n->assign));
+ n = (etree_type *) stat_alloc (sizeof (n->assign));
n->assign.type.node_code = '=';
n->assign.type.lineno = src->type.lineno;
n->assign.type.node_class = etree_provide;
{
etree_type *n;
- n = stat_alloc (sizeof (n->assert_s));
+ n = (etree_type *) 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;
{
unsigned char *dst;
unsigned char *s;
- fill = xmalloc ((len + 1) / 2 + sizeof (*fill) - 1);
+ fill = (fill_type *) xmalloc ((len + 1) / 2 + sizeof (*fill) - 1);
fill->size = (len + 1) / 2;
dst = fill->data;
s = (unsigned char *) expld.result.str;
}
else
{
- fill = xmalloc (4 + sizeof (*fill) - 1);
+ fill = (fill_type *) xmalloc (4 + sizeof (*fill) - 1);
val = expld.result.value;
fill->data[0] = (val >> 24) & 0xff;
fill->data[1] = (val >> 16) & 0xff;
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