/* This module handles expression trees.
-Copyright (C) 1991 Free Software Foundation, Inc.
+ Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ 2001
+ Free Software Foundation, Inc.
This file is part of GLD, the Gnu Linker.
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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with GLD; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
-/*
-This module is in charge of working out the contents of expressions.
-
-It has to keep track of the relative/absness of a symbol etc. This is
-done by keeping all values in a struct (an etree_value_type) which
-contains a value, a section to which it is relative and a valid bit.
-
-*/
+/* This module is in charge of working out the contents of expressions.
+ It has to keep track of the relative/absness of a symbol etc. This
+ is done by keeping all values in a struct (an etree_value_type)
+ which contains a value, a section to which it is relative and a
+ valid bit. */
#include "bfd.h"
#include "sysdep.h"
+#include "bfdlink.h"
#include "ld.h"
#include "ldmain.h"
#include "ldmisc.h"
#include "ldexp.h"
#include "ldgram.h"
-#include "ldsym.h"
#include "ldlang.h"
-
-extern char *output_filename;
-extern unsigned int undefined_global_sym_count;
-extern unsigned int defined_global_sym_count;
-extern bfd *output_bfd;
-extern bfd_size_type largest_section;
-extern lang_statement_list_type file_chain;
-extern args_type command_line;
-extern ld_config_type config;
-
-extern lang_input_statement_type *script_file;
-extern unsigned int defined_global_sym_count;
- extern lang_output_section_statement_type *abs_output_section;
-extern bfd_vma print_dot;
-
+#include "libiberty.h"
+
+static void exp_print_token PARAMS ((token_code_type code));
+static void make_abs PARAMS ((etree_value_type *ptr));
+static etree_value_type new_abs PARAMS ((bfd_vma value));
+static void check PARAMS ((lang_output_section_statement_type *os,
+ const char *name, const char *op));
+static etree_value_type new_rel
+ PARAMS ((bfd_vma value, lang_output_section_statement_type *section));
+static etree_value_type new_rel_from_section
+ PARAMS ((bfd_vma value, lang_output_section_statement_type *section));
+static etree_value_type fold_binary
+ PARAMS ((etree_type *tree,
+ lang_output_section_statement_type *current_section,
+ lang_phase_type allocation_done,
+ bfd_vma dot, bfd_vma *dotp));
+static etree_value_type fold_name
+ PARAMS ((etree_type *tree,
+ lang_output_section_statement_type *current_section,
+ lang_phase_type allocation_done,
+ bfd_vma dot));
+static etree_value_type exp_fold_tree_no_dot
+ PARAMS ((etree_type *tree,
+ lang_output_section_statement_type *current_section,
+ lang_phase_type allocation_done));
static void
-DEFUN(exp_print_token,( code),
- token_code_type code)
+exp_print_token (code)
+ token_code_type code;
{
- static struct {
+ static CONST struct
+ {
token_code_type code;
- char *name;
- } table[] =
- {
- INT, "int",
- NAME,"NAME",
- PLUSEQ,"+=",
- MINUSEQ,"-=",
- MULTEQ,"*=",
- DIVEQ,"/=",
- LSHIFTEQ,"<<=",
- RSHIFTEQ,">>=",
- ANDEQ,"&=",
- OREQ,"|=",
- OROR,"||",
- ANDAND,"&&",
- EQ,"==",
- NE,"!=",
- LE,"<=",
- GE,">=",
- LSHIFT,"<<",
- RSHIFT,">>=",
- ALIGN_K,"ALIGN",
- BLOCK,"BLOCK",
- SECTIONS,"SECTIONS",
- SIZEOF_HEADERS,"SIZEOF_HEADERS",
- NEXT,"NEXT",
- SIZEOF,"SIZEOF",
- ADDR,"ADDR",
- MEMORY,"MEMORY",
-
-
-
-
-
- DEFINED,"DEFINED",
- TARGET_K,"TARGET",
- SEARCH_DIR,"SEARCH_DIR",
- MAP,"MAP",
- LONG,"LONG",
- SHORT,"SHORT",
- BYTE,"BYTE",
- ENTRY,"ENTRY",
- 0,(char *)NULL} ;
-
-
-
+ char * name;
+ }
+ table[] =
+ {
+ { INT, "int" },
+ { NAME, "NAME" },
+ { PLUSEQ, "+=" },
+ { MINUSEQ, "-=" },
+ { MULTEQ, "*=" },
+ { DIVEQ, "/=" },
+ { LSHIFTEQ, "<<=" },
+ { RSHIFTEQ, ">>=" },
+ { ANDEQ, "&=" },
+ { OREQ, "|=" },
+ { OROR, "||" },
+ { ANDAND, "&&" },
+ { EQ, "==" },
+ { NE, "!=" },
+ { LE, "<=" },
+ { GE, ">=" },
+ { LSHIFT, "<<" },
+ { RSHIFT, ">>=" },
+ { ALIGN_K, "ALIGN" },
+ { BLOCK, "BLOCK" },
+ { QUAD, "QUAD" },
+ { SQUAD, "SQUAD" },
+ { LONG, "LONG" },
+ { SHORT, "SHORT" },
+ { BYTE, "BYTE" },
+ { SECTIONS, "SECTIONS" },
+ { SIZEOF_HEADERS, "SIZEOF_HEADERS" },
+ { MEMORY, "MEMORY" },
+ { DEFINED, "DEFINED" },
+ { TARGET_K, "TARGET" },
+ { SEARCH_DIR, "SEARCH_DIR" },
+ { MAP, "MAP" },
+ { ENTRY, "ENTRY" },
+ { NEXT, "NEXT" },
+ { SIZEOF, "SIZEOF" },
+ { ADDR, "ADDR" },
+ { LOADADDR, "LOADADDR" },
+ { MAX_K, "MAX_K" },
+ { REL, "relocateable" },
+ };
unsigned int idx;
- for (idx = 0; table[idx].name != (char*)NULL; idx++) {
- if (table[idx].code == code) {
- fprintf(config.map_file, "%s", table[idx].name);
- return;
+
+ for (idx = ARRAY_SIZE (table); idx--;)
+ {
+ if (table[idx].code == code)
+ {
+ fprintf (config.map_file, " %s ", table[idx].name);
+ return;
+ }
}
- }
- /* Not in table, just print it alone */
- fprintf(config.map_file, "%c",code);
+
+ /* Not in table, just print it alone. */
+ if (code < 127)
+ fprintf (config.map_file, " %c ", code);
+ else
+ fprintf (config.map_file, " <code %d> ", code);
}
-static void
-DEFUN(make_abs,(ptr),
- etree_value_type *ptr)
+static void
+make_abs (ptr)
+ etree_value_type *ptr;
{
- asection *s = ptr->section->bfd_section;
- ptr->value += s->vma;
- ptr->section = abs_output_section;
+ asection *s = ptr->section->bfd_section;
+ ptr->value += s->vma;
+ ptr->section = abs_output_section;
}
-static
-DEFUN(etree_value_type new_abs,(value),
- bfd_vma value)
+static etree_value_type
+new_abs (value)
+ bfd_vma value;
{
-
-
etree_value_type new;
- new.valid = true;
+ new.valid_p = true;
new.section = abs_output_section;
new.value = value;
return new;
}
-static void
-DEFUN(check, (os, name, op),
- lang_output_section_statement_type *os AND
- CONST char *name AND
- CONST char *op)
+static void
+check (os, name, op)
+ lang_output_section_statement_type *os;
+ const char *name;
+ const char *op;
{
- if (os == (lang_output_section_statement_type *)NULL) {
- einfo("%F%P %s uses undefined section %s\n", op, name);
- }
- if (os->processed == false) {
- einfo("%F%P %s forward reference of section %s\n",op, name);
- }
+ if (os == NULL)
+ einfo (_("%F%P: %s uses undefined section %s\n"), op, name);
+ if (! os->processed)
+ einfo (_("%F%P: %s forward reference of section %s\n"), op, name);
}
etree_type *
-DEFUN(exp_intop,(value),
- bfd_vma value)
+exp_intop (value)
+ bfd_vma value;
{
- etree_type *new = (etree_type *)stat_alloc((bfd_size_type)(sizeof(new->value)));
+ etree_type *new = (etree_type *) stat_alloc (sizeof (new->value));
new->type.node_code = INT;
new->value.value = value;
new->type.node_class = etree_value;
}
+/* Build an expression representing an unnamed relocateable value. */
+
+etree_type *
+exp_relop (section, value)
+ asection *section;
+ bfd_vma value;
+{
+ etree_type *new = (etree_type *) stat_alloc (sizeof (new->rel));
+ new->type.node_code = REL;
+ new->type.node_class = etree_rel;
+ new->rel.section = section;
+ new->rel.value = value;
+ return new;
+}
-static
-DEFUN(etree_value_type new_rel,(value, section),
- bfd_vma value AND
- lang_output_section_statement_type *section)
+static etree_value_type
+new_rel (value, section)
+ bfd_vma value;
+ lang_output_section_statement_type *section;
{
etree_value_type new;
- new.valid = true;
+ new.valid_p = true;
new.value = value;
new.section = section;
return new;
}
-static
-DEFUN(etree_value_type
- new_rel_from_section, (value, section),
- bfd_vma value AND
- lang_output_section_statement_type *section)
+static etree_value_type
+new_rel_from_section (value, section)
+ bfd_vma value;
+ lang_output_section_statement_type *section;
{
etree_value_type new;
- new.valid = true;
+ new.valid_p = true;
new.value = value;
new.section = section;
- new.value -= section->bfd_section->vma;
+ new.value -= section->bfd_section->vma;
return new;
}
-static etree_value_type
-DEFUN(fold_binary,(tree, current_section, allocation_done, dot, dotp),
- etree_type *tree AND
- lang_output_section_statement_type *current_section AND
- lang_phase_type allocation_done AND
- bfd_vma dot AND
- bfd_vma *dotp)
+static etree_value_type
+fold_binary (tree, current_section, allocation_done, dot, dotp)
+ etree_type *tree;
+ lang_output_section_statement_type *current_section;
+ lang_phase_type allocation_done;
+ bfd_vma dot;
+ bfd_vma *dotp;
{
etree_value_type result;
- result = exp_fold_tree(tree->binary.lhs, current_section,
+ result = exp_fold_tree (tree->binary.lhs, current_section,
allocation_done, dot, dotp);
- if (result.valid) {
- etree_value_type other;
- other = exp_fold_tree(tree->binary.rhs,
- current_section,
- allocation_done, dot,dotp) ;
- if (other.valid) {
- /* If values are from different sections, or this is an */
- /* absolute expression, make both source args absolute */
- if (result.section != other.section ||
- current_section == abs_output_section)
- {
- make_abs(&result);
- make_abs(&other);
- }
-
- switch (tree->type.node_code)
+ if (result.valid_p)
+ {
+ etree_value_type other;
+
+ other = exp_fold_tree (tree->binary.rhs,
+ current_section,
+ allocation_done, dot, dotp);
+ if (other.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 (current_section != abs_output_section
+ && (other.section == abs_output_section
+ || (result.section == abs_output_section
+ && tree->type.node_code == '+'))
+ && (tree->type.node_code == '+'
+ || tree->type.node_code == '-'))
+ {
+ etree_value_type hold;
+
+ /* If there is only one absolute term, make sure it is the
+ second one. */
+ if (other.section != abs_output_section)
+ {
+ hold = result;
+ result = other;
+ other = hold;
+ }
+ }
+ else if (result.section != other.section
+ || current_section == abs_output_section)
+ {
+ make_abs (&result);
+ make_abs (&other);
+ }
+
+ switch (tree->type.node_code)
+ {
+ case '%':
+ if (other.value == 0)
+ einfo (_("%F%S %% by zero\n"));
+ result.value = ((bfd_signed_vma) result.value
+ % (bfd_signed_vma) other.value);
+ break;
+
+ case '/':
+ if (other.value == 0)
+ einfo (_("%F%S / by zero\n"));
+ result.value = ((bfd_signed_vma) result.value
+ / (bfd_signed_vma) other.value);
+ break;
+
+#define BOP(x,y) case x : result.value = result.value y other.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 (result.value < other.value)
+ result = other;
+ break;
+
+ case MIN_K:
+ if (result.value > other.value)
+ result = other;
+ break;
+
+ default:
+ FAIL ();
+ }
+ }
+ else
{
- case '%':
- /* Mod, both absolule*/
-
- if (other.value == 0) {
- einfo("%F%S % by zero\n");
- }
- result.value = (int)result.value % (int)other.value;
- break;
- case '/':
- if (other.value == 0) {
- einfo("%F%S / by zero\n");
- }
- result.value = (int)result.value / (int) other.value;
- break;
-#define BOP(x,y) case x : result.value = result.value y other.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,||);
- default:
- FAIL();
+ result.valid_p = false;
}
}
- else {
- result.valid = false;
- }
- }
+
return result;
}
-etree_value_type
-DEFUN_VOID(invalid)
+
+etree_value_type
+invalid ()
{
etree_value_type new;
- new.valid = false;
+ new.valid_p = false;
return new;
}
-etree_value_type
-DEFUN(fold_name, (tree, current_section, allocation_done, dot),
- etree_type *tree AND
- lang_output_section_statement_type *current_section AND
- lang_phase_type allocation_done AND
- bfd_vma dot)
+static etree_value_type
+fold_name (tree, current_section, allocation_done, dot)
+ etree_type *tree;
+ lang_output_section_statement_type *current_section;
+ lang_phase_type allocation_done;
+ bfd_vma dot;
{
etree_value_type result;
- switch (tree->type.node_code)
- {
- case SIZEOF_HEADERS:
- if (allocation_done != lang_first_phase_enum)
- {
- result = new_abs(bfd_sizeof_headers(output_bfd,
- config.relocateable_output));
- }
- else {
- result.valid = false;
+ switch (tree->type.node_code)
+ {
+ case SIZEOF_HEADERS:
+ if (allocation_done != lang_first_phase_enum)
+ {
+ result = new_abs ((bfd_vma)
+ bfd_sizeof_headers (output_bfd,
+ link_info.relocateable));
}
- break;
- case DEFINED:
- result.value =
- ldsym_get_soft(tree->name.name) != (ldsym_type *)NULL;
- result.section = 0;
- result.valid = true;
- break;
- case NAME:
- result.valid = false;
- if (tree->name.name[0] == '.' && tree->name.name[1] == 0) {
-
- if (allocation_done != lang_first_phase_enum) {
- result = new_rel_from_section(dot, current_section);
- }
- else {
- result = invalid();
- }
+ else
+ {
+ result.valid_p = false;
}
- else {
- if (allocation_done == lang_final_phase_enum) {
- ldsym_type *sy = ldsym_get_soft(tree->name.name);
-
- if (sy) {
- asymbol **sdefp = sy->sdefs_chain;
-
- if (sdefp) {
- asymbol *sdef = *sdefp;
-#if 0
- if (sdef->section == (asection *)NULL) {
- /* This is an absolute symbol */
- result = new_abs(sdef->value);
- }
- else
-#endif
- {
- lang_output_section_statement_type *os =
- lang_output_section_statement_lookup(
- sdef->section->output_section->name);
- /* If the symbol is from a file which we are not
- relocating (-R) then return an absolute for its
- value */
- if (sdef->the_bfd->usrdata &&
- ((lang_input_statement_type*)(sdef->the_bfd->usrdata))->just_syms_flag == true)
- {
- result = new_abs(sdef->value +sdef->section->vma);
-
- }
- else {
- result = new_rel(sdef->value + sdef->section->output_offset, os);
- }
+ break;
+ case DEFINED:
+ if (allocation_done == lang_first_phase_enum)
+ result.valid_p = false;
+ else
+ {
+ struct bfd_link_hash_entry *h;
+
+ h = bfd_wrapped_link_hash_lookup (output_bfd, &link_info,
+ tree->name.name,
+ false, false, true);
+ result.value = (h != (struct bfd_link_hash_entry *) NULL
+ && (h->type == bfd_link_hash_defined
+ || h->type == bfd_link_hash_defweak
+ || h->type == bfd_link_hash_common));
+ result.section = 0;
+ result.valid_p = true;
+ }
+ break;
+ case NAME:
+ result.valid_p = false;
+ if (tree->name.name[0] == '.' && tree->name.name[1] == 0)
+ {
+ if (allocation_done != lang_first_phase_enum)
+ result = new_rel_from_section (dot, current_section);
+ else
+ result = invalid ();
+ }
+ else if (allocation_done != lang_first_phase_enum)
+ {
+ struct bfd_link_hash_entry *h;
+
+ h = bfd_wrapped_link_hash_lookup (output_bfd, &link_info,
+ tree->name.name,
+ false, false, true);
+ if (h != NULL
+ && (h->type == bfd_link_hash_defined
+ || h->type == bfd_link_hash_defweak))
+ {
+ if (bfd_is_abs_section (h->u.def.section))
+ result = new_abs (h->u.def.value);
+ else if (allocation_done == lang_final_phase_enum
+ || allocation_done == lang_allocating_phase_enum)
+ {
+ asection *output_section;
+
+ output_section = h->u.def.section->output_section;
+ if (output_section == NULL)
+ einfo (_("%X%S: unresolvable symbol `%s' referenced in expression\n"),
+ tree->name.name);
+ else
+ {
+ lang_output_section_statement_type *os;
+
+ os = (lang_output_section_statement_lookup
+ (bfd_get_section_name (output_bfd,
+ output_section)));
+
+ /* FIXME: Is this correct if this section is
+ being linked with -R? */
+ result = new_rel ((h->u.def.value
+ + h->u.def.section->output_offset),
+ os);
+ }
}
- }
}
- if (result.valid == false) {
- einfo("%F%S: undefined symbol `%s' referenced in expression.\n",
+ else if (allocation_done == lang_final_phase_enum)
+ einfo (_("%F%S: undefined symbol `%s' referenced in expression\n"),
tree->name.name);
- }
-
- }
}
+ break;
- break;
-
- case ADDR:
+ case ADDR:
+ if (allocation_done != lang_first_phase_enum)
+ {
+ lang_output_section_statement_type *os;
- if (allocation_done != lang_first_phase_enum) {
- lang_output_section_statement_type *os =
- lang_output_section_find(tree->name.name);
- check(os,tree->name.name,"ADDR");
- result = new_rel((bfd_vma)0, os);
+ os = lang_output_section_find (tree->name.name);
+ check (os, tree->name.name, "ADDR");
+ result = new_rel (0, os);
}
- else {
- result = invalid();
- }
- break;
- case SIZEOF:
- if(allocation_done != lang_first_phase_enum) {
- lang_output_section_statement_type *os =
- lang_output_section_find(tree->name.name);
- check(os,tree->name.name,"SIZEOF");
- result = new_abs((bfd_vma)(os->bfd_section->_raw_size));
+ else
+ result = invalid ();
+ break;
+
+ case LOADADDR:
+ if (allocation_done != lang_first_phase_enum)
+ {
+ lang_output_section_statement_type *os;
+
+ os = lang_output_section_find (tree->name.name);
+ check (os, tree->name.name, "LOADADDR");
+ if (os->load_base == NULL)
+ result = new_rel (0, os);
+ else
+ result = exp_fold_tree_no_dot (os->load_base,
+ abs_output_section,
+ allocation_done);
}
- else {
- result = invalid();
+ else
+ result = invalid ();
+ break;
+
+ case SIZEOF:
+ if (allocation_done != 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);
+ check (os, tree->name.name, "SIZEOF");
+ result = new_abs (os->bfd_section->_raw_size / opb);
}
- break;
+ else
+ result = invalid ();
+ break;
- default:
- FAIL();
- break;
- }
+ default:
+ FAIL ();
+ break;
+ }
return result;
}
-etree_value_type
-DEFUN(exp_fold_tree,(tree, current_section, allocation_done,
- dot, dotp),
- etree_type *tree AND
- lang_output_section_statement_type *current_section AND
- lang_phase_type allocation_done AND
- bfd_vma dot AND
- bfd_vma *dotp)
+
+etree_value_type
+exp_fold_tree (tree, current_section, allocation_done, dot, dotp)
+ etree_type *tree;
+ lang_output_section_statement_type *current_section;
+ lang_phase_type allocation_done;
+ bfd_vma dot;
+ bfd_vma *dotp;
{
etree_value_type result;
- if (tree == (etree_type *)NULL) {
- result.valid = false;
+ if (tree == NULL)
+ {
+ result.valid_p = false;
+ return result;
}
- else {
- switch (tree->type.node_class)
- {
- case etree_value:
- result = new_rel(tree->value.value, current_section);
- break;
- case etree_unary:
- result = exp_fold_tree(tree->unary.child,
- current_section,
- allocation_done, dot, dotp);
- if (result.valid == true)
+
+ switch (tree->type.node_class)
+ {
+ case etree_value:
+ result = new_rel (tree->value.value, current_section);
+ break;
+
+ case etree_rel:
+ if (allocation_done != lang_final_phase_enum)
+ result.valid_p = false;
+ else
+ result = new_rel ((tree->rel.value
+ + tree->rel.section->output_section->vma
+ + tree->rel.section->output_offset),
+ current_section);
+ break;
+
+ case etree_assert:
+ result = exp_fold_tree (tree->assert_s.child,
+ current_section,
+ allocation_done, dot, dotp);
+ if (result.valid_p)
{
- switch(tree->type.node_code)
- {
- case ALIGN_K:
- if (allocation_done != lang_first_phase_enum) {
- result = new_rel_from_section(ALIGN(dot,
- result.value) ,
- current_section);
-
- }
- else {
- result.valid = false;
- }
- break;
- case '~':
- make_abs(&result);
- result.value = ~result.value;
- break;
- case '!':
- make_abs(&result);
- result.value = !result.value;
- break;
- case '-':
- make_abs(&result);
- result.value = -result.value;
- break;
- case NEXT:
- if (allocation_done ==lang_allocating_phase_enum) {
- make_abs(&result);
- result.value = ALIGN(dot, result.value);
- }
- else {
- /* Return next place aligned to value */
- result.valid = false;
- }
- break;
- default:
- FAIL();
- }
+ if (! result.value)
+ einfo ("%F%P: %s\n", tree->assert_s.message);
+ return result;
}
+ break;
- break;
- case etree_trinary:
-
- result = exp_fold_tree(tree->trinary.cond,
- current_section,
- allocation_done, dot, dotp);
- if (result.valid) {
- result = exp_fold_tree(result.value ?
- tree->trinary.lhs:tree->trinary.rhs,
- current_section,
- allocation_done, dot, dotp);
- }
-
- break;
- case etree_binary:
- result = fold_binary(tree, current_section, allocation_done,
- dot, dotp);
- break;
- case etree_assign:
- if (tree->assign.dst[0] == '.' && tree->assign.dst[1] == 0) {
- /* Assignment to dot can only be done during allocation */
- if (allocation_done == lang_allocating_phase_enum) {
- result = exp_fold_tree(tree->assign.src,
- current_section,
- lang_allocating_phase_enum, dot, dotp);
- if (result.valid == false) {
- einfo("%F%S invalid assignment to location counter\n");
- }
- else {
- if (current_section ==
- (lang_output_section_statement_type *)NULL) {
- einfo("%F%S assignment to location counter invalid outside of SECTION\n");
- }
- else {
- unsigned long nextdot =result.value +
- current_section->bfd_section->vma;
- if (nextdot < dot) {
- einfo("%F%S cannot move location counter backwards");
- }
- else {
- *dotp = nextdot;
- }
- }
- }
- }
- }
- else {
- ldsym_type *sy = ldsym_get(tree->assign.dst);
-
- /* If this symbol has just been created then we'll place it into
- * a section of our choice
- */
- result = exp_fold_tree(tree->assign.src,
- current_section, allocation_done,
- dot, dotp);
- if (result.valid)
+ case etree_unary:
+ result = exp_fold_tree (tree->unary.child,
+ current_section,
+ allocation_done, dot, dotp);
+ if (result.valid_p)
+ {
+ switch (tree->type.node_code)
+ {
+ case ALIGN_K:
+ if (allocation_done != lang_first_phase_enum)
+ result = new_rel_from_section (ALIGN_N (dot, result.value),
+ current_section);
+ else
+ result.valid_p = false;
+ break;
+
+ case ABSOLUTE:
+ if (allocation_done != lang_first_phase_enum && result.valid_p)
+ {
+ result.value += result.section->bfd_section->vma;
+ result.section = abs_output_section;
+ }
+ else
+ result.valid_p = false;
+ break;
+
+ case '~':
+ make_abs (&result);
+ result.value = ~result.value;
+ break;
+
+ case '!':
+ make_abs (&result);
+ result.value = !result.value;
+ break;
+
+ case '-':
+ make_abs (&result);
+ result.value = -result.value;
+ break;
+
+ case NEXT:
+ /* Return next place aligned to value. */
+ if (allocation_done == lang_allocating_phase_enum)
+ {
+ make_abs (&result);
+ result.value = ALIGN_N (dot, result.value);
+ }
+ else
+ result.valid_p = false;
+ break;
+
+ default:
+ FAIL ();
+ break;
+ }
+ }
+ break;
+
+ case etree_trinary:
+ result = exp_fold_tree (tree->trinary.cond, current_section,
+ allocation_done, dot, dotp);
+ if (result.valid_p)
+ result = exp_fold_tree ((result.value
+ ? tree->trinary.lhs
+ : tree->trinary.rhs),
+ current_section,
+ allocation_done, dot, dotp);
+ break;
+
+ case etree_binary:
+ result = fold_binary (tree, current_section, allocation_done,
+ dot, dotp);
+ break;
+
+ case etree_assign:
+ case etree_provide:
+ case etree_provided:
+ if (tree->assign.dst[0] == '.' && tree->assign.dst[1] == 0)
+ {
+ /* Assignment to dot can only be done during allocation. */
+ if (tree->type.node_class != etree_assign)
+ einfo (_("%F%S can not PROVIDE assignment to location counter\n"));
+ if (allocation_done == lang_allocating_phase_enum
+ || (allocation_done == lang_final_phase_enum
+ && current_section == abs_output_section))
+ {
+ result = exp_fold_tree (tree->assign.src,
+ current_section,
+ lang_allocating_phase_enum, dot,
+ dotp);
+ if (! result.valid_p)
+ einfo (_("%F%S invalid assignment to location counter\n"));
+ else
+ {
+ if (current_section == NULL)
+ einfo (_("%F%S assignment to location counter invalid outside of SECTION\n"));
+ else
+ {
+ bfd_vma nextdot;
+
+ nextdot = (result.value
+ + current_section->bfd_section->vma);
+ if (nextdot < dot
+ && current_section != abs_output_section)
+ einfo (_("%F%S cannot move location counter backwards (from %V to %V)\n"),
+ dot, nextdot);
+ else
+ *dotp = nextdot;
+ }
+ }
+ }
+ }
+ else
+ {
+ result = exp_fold_tree (tree->assign.src,
+ current_section, allocation_done,
+ dot, dotp);
+ if (result.valid_p)
{
- asymbol *def;
- asymbol **def_ptr ;
- /* Add this definition to script file */
- if (sy->sdefs_chain)
- {
- def_ptr = sy->sdefs_chain;
- def = *def_ptr;
-
- }
- else
- {
- def_ptr = (asymbol **)stat_alloc((bfd_size_type)(sizeof(asymbol **)));
- def = (asymbol *)bfd_make_empty_symbol(script_file->the_bfd);
-
-
- def->flags = 0;
-
- sy->sdefs_chain = def_ptr;
- *def_ptr = def;
- }
-
- def->value = result.value;
-
- def->section = result.section->bfd_section;
- def->flags = BSF_GLOBAL | BSF_EXPORT;
-
-
- def->udata = (PTR)NULL;
- def->name = sy->name;
-
- if (sy->sdefs_chain == 0) Q_enter_global_ref(def_ptr);
+ boolean create;
+ struct bfd_link_hash_entry *h;
+
+ if (tree->type.node_class == etree_assign)
+ create = true;
+ else
+ create = false;
+ h = bfd_link_hash_lookup (link_info.hash, tree->assign.dst,
+ create, false, false);
+ if (h == (struct bfd_link_hash_entry *) NULL)
+ {
+ if (tree->type.node_class == etree_assign)
+ einfo (_("%P%F:%s: hash creation failed\n"),
+ tree->assign.dst);
+ }
+ else if (tree->type.node_class == etree_provide
+ && h->type != bfd_link_hash_undefined
+ && h->type != bfd_link_hash_common)
+ {
+ /* Do nothing. The symbol was defined by some
+ object. */
+ }
+ else
+ {
+ /* FIXME: Should we worry if the symbol is already
+ defined? */
+ h->type = bfd_link_hash_defined;
+ h->u.def.value = result.value;
+ h->u.def.section = result.section->bfd_section;
+ if (tree->type.node_class == etree_provide)
+ tree->type.node_class = etree_provided;
+ }
}
+ }
+ break;
- }
+ case etree_name:
+ result = fold_name (tree, current_section, allocation_done, dot);
+ break;
-
- break;
- case etree_name:
- result = fold_name(tree, current_section, allocation_done, dot);
- break;
- default:
- einfo("%F%S Need more of these %d",tree->type.node_class );
-
- }
+ default:
+ FAIL ();
+ break;
}
return result;
}
-
-etree_value_type
-DEFUN(exp_fold_tree_no_dot,(tree, current_section, allocation_done),
- etree_type *tree AND
- lang_output_section_statement_type *current_section AND
- lang_phase_type allocation_done)
+static etree_value_type
+exp_fold_tree_no_dot (tree, current_section, allocation_done)
+ etree_type *tree;
+ lang_output_section_statement_type *current_section;
+ lang_phase_type allocation_done;
{
-return exp_fold_tree(tree, current_section, allocation_done, (bfd_vma)
- 0, (bfd_vma *)NULL);
+ return exp_fold_tree (tree, current_section, allocation_done,
+ (bfd_vma) 0, (bfd_vma *) NULL);
}
etree_type *
-DEFUN(exp_binop,(code, lhs, rhs),
- int code AND
- etree_type *lhs AND
- etree_type *rhs)
+exp_binop (code, lhs, rhs)
+ int code;
+ etree_type *lhs;
+ etree_type *rhs;
{
etree_type value, *new;
etree_value_type r;
value.binary.lhs = lhs;
value.binary.rhs = rhs;
value.type.node_class = etree_binary;
- r = exp_fold_tree_no_dot(&value,
- abs_output_section,
- lang_first_phase_enum );
- if (r.valid)
+ r = exp_fold_tree_no_dot (&value,
+ abs_output_section,
+ lang_first_phase_enum);
+ if (r.valid_p)
{
- return exp_intop(r.value);
+ return exp_intop (r.value);
}
- new = (etree_type *)stat_alloc((bfd_size_type)(sizeof(new->binary)));
- memcpy((char *)new, (char *)&value, sizeof(new->binary));
+ new = (etree_type *) stat_alloc (sizeof (new->binary));
+ memcpy ((char *) new, (char *) &value, sizeof (new->binary));
return new;
}
etree_type *
-DEFUN(exp_trinop,(code, cond, lhs, rhs),
- int code AND
- etree_type *cond AND
- etree_type *lhs AND
- etree_type *rhs)
+exp_trinop (code, cond, lhs, rhs)
+ int code;
+ etree_type *cond;
+ etree_type *lhs;
+ etree_type *rhs;
{
etree_type value, *new;
etree_value_type r;
value.trinary.cond = cond;
value.trinary.rhs = rhs;
value.type.node_class = etree_trinary;
- r= exp_fold_tree_no_dot(&value, (lang_output_section_statement_type
- *)NULL,lang_first_phase_enum);
- if (r.valid) {
- return exp_intop(r.value);
- }
- new = (etree_type *)stat_alloc((bfd_size_type)(sizeof(new->trinary)));
- memcpy((char *)new,(char *) &value, sizeof(new->trinary));
+ r = exp_fold_tree_no_dot (&value,
+ (lang_output_section_statement_type *) NULL,
+ lang_first_phase_enum);
+ if (r.valid_p)
+ return exp_intop (r.value);
+
+ new = (etree_type *) stat_alloc (sizeof (new->trinary));
+ memcpy ((char *) new, (char *) &value, sizeof (new->trinary));
return new;
}
-
etree_type *
-DEFUN(exp_unop,(code, child),
- int code AND
- etree_type *child)
+exp_unop (code, child)
+ int code;
+ etree_type *child;
{
etree_type value, *new;
value.unary.type.node_code = code;
value.unary.child = child;
value.unary.type.node_class = etree_unary;
- r = exp_fold_tree_no_dot(&value,(lang_output_section_statement_type *)NULL,
- lang_first_phase_enum);
- if (r.valid) {
- return exp_intop(r.value);
- }
- new = (etree_type *)stat_alloc((bfd_size_type)(sizeof(new->unary)));
- memcpy((char *)new, (char *)&value, sizeof(new->unary));
+ r = exp_fold_tree_no_dot (&value, abs_output_section,
+ lang_first_phase_enum);
+ if (r.valid_p)
+ return exp_intop (r.value);
+
+ new = (etree_type *) stat_alloc (sizeof (new->unary));
+ memcpy ((char *) new, (char *) &value, sizeof (new->unary));
return new;
}
-
etree_type *
-DEFUN(exp_nameop,(code, name),
- int code AND
- CONST char *name)
+exp_nameop (code, name)
+ int code;
+ CONST char *name;
{
-
etree_type value, *new;
etree_value_type r;
value.name.type.node_code = code;
value.name.name = name;
value.name.type.node_class = etree_name;
+ r = exp_fold_tree_no_dot (&value,
+ (lang_output_section_statement_type *) NULL,
+ lang_first_phase_enum);
+ if (r.valid_p)
+ return exp_intop (r.value);
- r = exp_fold_tree_no_dot(&value,
- (lang_output_section_statement_type *)NULL,
- lang_first_phase_enum);
- if (r.valid) {
- return exp_intop(r.value);
- }
- new = (etree_type *)stat_alloc((bfd_size_type)(sizeof(new->name)));
- memcpy((char *)new, (char *)&value, sizeof(new->name));
+ new = (etree_type *) stat_alloc (sizeof (new->name));
+ memcpy ((char *) new, (char *) &value, sizeof (new->name));
return new;
}
-
-
-
etree_type *
-DEFUN(exp_assop,(code, dst, src),
- int code AND
- CONST char *dst AND
- etree_type *src)
+exp_assop (code, dst, src)
+ int code;
+ CONST char *dst;
+ etree_type *src;
{
etree_type value, *new;
value.assign.type.node_code = code;
-
value.assign.src = src;
value.assign.dst = dst;
value.assign.type.node_class = etree_assign;
#if 0
- if (exp_fold_tree_no_dot(&value, &result)) {
- return exp_intop(result);
- }
+ if (exp_fold_tree_no_dot (&value, &result))
+ return exp_intop (result);
#endif
- new = (etree_type*)stat_alloc((bfd_size_type)(sizeof(new->assign)));
- memcpy((char *)new, (char *)&value, sizeof(new->assign));
+ new = (etree_type *) stat_alloc (sizeof (new->assign));
+ memcpy ((char *) new, (char *) &value, sizeof (new->assign));
return new;
}
-void
-DEFUN(exp_print_tree,(tree),
- etree_type *tree)
+/* Handle PROVIDE. */
+
+etree_type *
+exp_provide (dst, src)
+ const char *dst;
+ etree_type *src;
{
- switch (tree->type.node_class) {
- case etree_value:
- print_address(tree->value.value);
- return;
+ etree_type *n;
+
+ n = (etree_type *) stat_alloc (sizeof (n->assign));
+ n->assign.type.node_code = '=';
+ n->assign.type.node_class = etree_provide;
+ n->assign.src = src;
+ n->assign.dst = dst;
+ return n;
+}
- case etree_assign:
-#if 0
- if (tree->assign.dst->sdefs != (asymbol *)NULL){
- fprintf(config.map_file,"%s (%x) ",tree->assign.dst->name,
- tree->assign.dst->sdefs->value);
- }
- else {
- fprintf(config.map_file,"%s (UNDEFINED)",tree->assign.dst->name);
- }
-#endif
- fprintf(config.map_file,"%s ",tree->assign.dst);
- exp_print_token(tree->type.node_code);
- exp_print_tree(tree->assign.src);
- break;
- case etree_binary:
- fprintf(config.map_file,"(");
- exp_print_tree(tree->binary.lhs);
- exp_print_token(tree->type.node_code);
- exp_print_tree(tree->binary.rhs);
- fprintf(config.map_file,")");
- break;
- case etree_trinary:
- exp_print_tree(tree->trinary.cond);
- fprintf(config.map_file,"?");
- exp_print_tree(tree->trinary.lhs);
- fprintf(config.map_file,":");
- exp_print_tree(tree->trinary.rhs);
- break;
- case etree_unary:
- exp_print_token(tree->unary.type.node_code);
- if (tree->unary.child)
+/* Handle ASSERT. */
+
+etree_type *
+exp_assert (exp, message)
+ etree_type *exp;
+ const char *message;
+{
+ etree_type *n;
+
+ n = (etree_type *) stat_alloc (sizeof (n->assert_s));
+ n->assert_s.type.node_code = '!';
+ n->assert_s.type.node_class = etree_assert;
+ n->assert_s.child = exp;
+ n->assert_s.message = message;
+ return n;
+}
+
+void
+exp_print_tree (tree)
+ etree_type *tree;
+{
+ if (config.map_file == NULL)
+ config.map_file = stderr;
+
+ if (tree == NULL)
{
-
- fprintf(config.map_file,"(");
- exp_print_tree(tree->unary.child);
- fprintf(config.map_file,")");
- }
-
- break;
- case etree_undef:
- fprintf(config.map_file,"????????");
- break;
- case etree_name:
- if (tree->type.node_code == NAME) {
- fprintf(config.map_file,"%s", tree->name.name);
+ minfo ("NULL TREE\n");
+ return;
}
- else {
- exp_print_token(tree->type.node_code);
- if (tree->name.name)
- fprintf(config.map_file,"(%s)", tree->name.name);
+
+ switch (tree->type.node_class)
+ {
+ case etree_value:
+ minfo ("0x%v", tree->value.value);
+ return;
+ case etree_rel:
+ if (tree->rel.section->owner != NULL)
+ minfo ("%B:", tree->rel.section->owner);
+ minfo ("%s+0x%v", tree->rel.section->name, tree->rel.value);
+ return;
+ case etree_assign:
+#if 0
+ if (tree->assign.dst->sdefs != (asymbol *) NULL)
+ fprintf (config.map_file, "%s (%x) ", tree->assign.dst->name,
+ tree->assign.dst->sdefs->value);
+ else
+ fprintf (config.map_file, "%s (UNDEFINED)", tree->assign.dst->name);
+#endif
+ fprintf (config.map_file, "%s", tree->assign.dst);
+ exp_print_token (tree->type.node_code);
+ exp_print_tree (tree->assign.src);
+ break;
+ case etree_provide:
+ case etree_provided:
+ fprintf (config.map_file, "PROVIDE (%s, ", tree->assign.dst);
+ exp_print_tree (tree->assign.src);
+ fprintf (config.map_file, ")");
+ break;
+ case etree_binary:
+ fprintf (config.map_file, "(");
+ exp_print_tree (tree->binary.lhs);
+ exp_print_token (tree->type.node_code);
+ exp_print_tree (tree->binary.rhs);
+ fprintf (config.map_file, ")");
+ break;
+ case etree_trinary:
+ exp_print_tree (tree->trinary.cond);
+ fprintf (config.map_file, "?");
+ exp_print_tree (tree->trinary.lhs);
+ fprintf (config.map_file, ":");
+ exp_print_tree (tree->trinary.rhs);
+ break;
+ case etree_unary:
+ exp_print_token (tree->unary.type.node_code);
+ if (tree->unary.child)
+ {
+ fprintf (config.map_file, "(");
+ exp_print_tree (tree->unary.child);
+ fprintf (config.map_file, ")");
+ }
+ break;
+
+ case etree_assert:
+ fprintf (config.map_file, "ASSERT (");
+ exp_print_tree (tree->assert_s.child);
+ fprintf (config.map_file, ", %s)", tree->assert_s.message);
+ break;
+
+ case etree_undef:
+ fprintf (config.map_file, "????????");
+ break;
+ case etree_name:
+ if (tree->type.node_code == NAME)
+ {
+ fprintf (config.map_file, "%s", tree->name.name);
+ }
+ else
+ {
+ exp_print_token (tree->type.node_code);
+ if (tree->name.name)
+ fprintf (config.map_file, "(%s)", tree->name.name);
+ }
+ break;
+ default:
+ FAIL ();
+ break;
}
- break;
- default:
- FAIL();
- break;
- }
}
-
-
-
bfd_vma
-DEFUN(exp_get_vma,(tree, def, name, allocation_done),
- etree_type *tree AND
- bfd_vma def AND
- char *name AND
- lang_phase_type allocation_done)
+exp_get_vma (tree, def, name, allocation_done)
+ etree_type *tree;
+ bfd_vma def;
+ char *name;
+ lang_phase_type allocation_done;
{
etree_value_type r;
- if (tree != (etree_type *)NULL) {
- r = exp_fold_tree_no_dot(tree,
- abs_output_section,
- allocation_done);
- if (r.valid == false && name) {
- einfo("%F%S Nonconstant expression for %s\n",name);
+ if (tree != NULL)
+ {
+ r = exp_fold_tree_no_dot (tree, abs_output_section, allocation_done);
+ if (! r.valid_p && name != NULL)
+ einfo (_("%F%S nonconstant expression for %s\n"), name);
+ return r.value;
}
- return r.value;
- }
- else {
+ else
return def;
- }
}
-int
-DEFUN(exp_get_value_int,(tree,def,name, allocation_done),
- etree_type *tree AND
- int def AND
- char *name AND
- lang_phase_type allocation_done)
+int
+exp_get_value_int (tree, def, name, allocation_done)
+ etree_type *tree;
+ int def;
+ char *name;
+ lang_phase_type allocation_done;
{
- return (int)exp_get_vma(tree,(bfd_vma)def,name, allocation_done);
+ return (int) exp_get_vma (tree, (bfd_vma) def, name, allocation_done);
}
+bfd_vma
+exp_get_abs_int (tree, def, name, allocation_done)
+ etree_type *tree;
+ int def ATTRIBUTE_UNUSED;
+ char *name;
+ lang_phase_type allocation_done;
+{
+ etree_value_type res;
+ res = exp_fold_tree_no_dot (tree, abs_output_section, allocation_done);
+
+ if (res.valid_p)
+ res.value += res.section->bfd_section->vma;
+ else
+ einfo (_("%F%S non constant expression for %s\n"), name);
+
+ return res.value;
+}
projects / binutils.git / blobdiff