-/* Copyright (C) 1991 Free Software Foundation, Inc.
+/* This module handles expression trees.
+Copyright (C) 1991, 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
+Written by Steve Chamberlain of Cygnus Support (sac@cygnus.com).
This file is part of GLD, the Gnu Linker.
GLD 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 1, or (at your option)
+the Free Software Foundation; either version 2, or (at your option)
any later version.
GLD is distributed in the hope that it will be useful,
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. */
+the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*
- $Id$
-*/
+This module is in charge of working out the contents of expressions.
-/*
- * Written by Steve Chamberlain
- * steve@cygnus.com
- *
- * This module handles expression trees.
- */
+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 "sysdep.h"
#include "bfd.h"
+#include "sysdep.h"
+#include "bfdlink.h"
#include "ld.h"
#include "ldmain.h"
#include "ldmisc.h"
#include "ldexp.h"
-#include "ldgram.tab.h"
-#include "ldsym.h"
+#include "ldgram.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 size_t 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 bfd_vma print_dot;
-
+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
-exp_print_token(outfile, code)
-FILE *outfile;
-token_code_type code;
+exp_print_token (code)
+ token_code_type code;
{
- static struct {
- token_code_type code;
- char *name;
- } table[] =
+ static CONST struct
{
- INT, "int",
- CHAR,"char",
- 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",
- ALIGNMENT,"ALIGNMENT",
- SIZEOF_HEADERS,"SIZEOF_HEADERS",
- NEXT,"NEXT",
- SIZEOF,"SIZEOF",
- ADDR,"ADDR",
- MEMORY,"MEMORY",
- DSECT,"DSECT",
- NOLOAD,"NOLOAD",
- COPY,"COPY",
- INFO,"INFO",
- OVERLAY,"OVERLAY",
- DEFINED,"DEFINED",
- TARGET_K,"TARGET",
- SEARCH_DIR,"SEARCH_DIR",
- MAP,"MAP",
- LONG,"LONG",
- SHORT,"SHORT",
- BYTE,"BYTE",
- ENTRY,"ENTRY",
- 0,(char *)NULL} ;
-
-
-
+ token_code_type code;
+ char *name;
+ } table[] =
+ {
+ { INT, "int" },
+ { REL, "relocateable" },
+ { 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" },
+ { LOADADDR,"LOADADDR" },
+ { MEMORY,"MEMORY" },
+ { DEFINED,"DEFINED" },
+ { TARGET_K,"TARGET" },
+ { SEARCH_DIR,"SEARCH_DIR" },
+ { MAP,"MAP" },
+ { QUAD,"QUAD" },
+ { LONG,"LONG" },
+ { SHORT,"SHORT" },
+ { BYTE,"BYTE" },
+ { ENTRY,"ENTRY" },
+ { 0,(char *)NULL }
+ };
unsigned int idx;
+
for (idx = 0; table[idx].name != (char*)NULL; idx++) {
if (table[idx].code == code) {
- fprintf(outfile, "%s", table[idx].name);
+ fprintf(config.map_file, "%s", table[idx].name);
return;
}
}
/* Not in table, just print it alone */
- fprintf(outfile, "%c",code);
+ fprintf(config.map_file, "%c",code);
}
static void
-make_abs(ptr)
-etree_value_type *ptr;
+make_abs (ptr)
+ etree_value_type *ptr;
{
- if (ptr->section != (lang_output_section_statement_type *)NULL) {
asection *s = ptr->section->bfd_section;
ptr->value += s->vma;
- ptr->section = (lang_output_section_statement_type *)NULL;
- }
-
+ ptr->section = abs_output_section;
}
-static
-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.section = (lang_output_section_statement_type *)NULL;
+ 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)
+check (os, name, op)
+ lang_output_section_statement_type *os;
+ const char *name;
+ const char *op;
{
- if (os == (lang_output_section_statement_type *)NULL) {
- info("%F%P %s uses undefined section %s\n", op, name);
- }
- if (os->processed == false) {
- info("%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 *exp_intop(value)
-bfd_vma value;
+etree_type *
+exp_intop (value)
+ bfd_vma value;
{
- etree_type *new = (etree_type *)ldmalloc(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
-etree_value_type new_rel(value, section)
-bfd_vma value;
-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;
return new;
}
-static
-etree_value_type new_rel_from_section(value, section)
-bfd_vma value;
-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.value = value;
new.section = section;
- if (new.section != (lang_output_section_statement_type *)NULL) {
+
new.value -= section->bfd_section->vma;
- }
+
return new;
}
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;
+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 == (lang_output_section_statement_type *)NULL) {
-
- make_abs(&result);
- make_abs(&other);
- }
-
- switch (tree->type.node_code)
+ if (result.valid)
+ {
+ etree_value_type other;
+
+ other = exp_fold_tree (tree->binary.rhs,
+ current_section,
+ allocation_done, dot,dotp) ;
+ if (other.valid)
{
- case '%':
- /* Mod, both absolule*/
+ /* 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);
+ }
- if (other.value == 0) {
- info("%F%S % by zero\n");
- }
- result.value %= other.value;
- break;
- case '/':
- if (other.value == 0) {
- info("%F%S / by zero\n");
- }
- result.value /= 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();
+ 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,||);
+
+ default:
+ FAIL();
+ }
+ }
+ else
+ {
+ result.valid = false;
}
}
- else {
- result.valid = false;
- }
- }
+
return result;
}
-etree_value_type invalid()
+
+etree_value_type
+invalid ()
{
etree_value_type new;
new.valid = false;
return new;
}
-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;
-
+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 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 {
- 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 (sdef->section == (asection *)NULL) {
- /* This is an absolute symbol */
- result = new_abs(sdef->value);
- }
- else {
- lang_output_section_statement_type *os =
- lang_output_section_statement_lookup( sdef->section->output_section->name);
- result = new_rel(sdef->value, os);
+ {
+ case SIZEOF_HEADERS:
+ if (allocation_done != lang_first_phase_enum)
+ {
+ result = new_abs ((bfd_vma)
+ bfd_sizeof_headers (output_bfd,
+ link_info.relocateable));
+ }
+ else
+ {
+ result.valid = false;
+ }
+ break;
+ case DEFINED:
+ if (allocation_done == lang_first_phase_enum)
+ result.valid = 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 = 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 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)
+ {
+ lang_output_section_statement_type *os;
+
+ os = (lang_output_section_statement_lookup
+ (h->u.def.section->output_section->name));
+
+ /* 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);
+ }
}
- }
+ else if (allocation_done == lang_final_phase_enum)
+ einfo ("%F%S: undefined symbol `%s' referenced in expression\n",
+ tree->name.name);
}
- if (result.valid == false) {
- info("%F%S: undefined symbol `%s' referenced in expression.\n",
- tree->name.name);
+ break;
+
+ case ADDR:
+ 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, "ADDR");
+ result = new_rel (0, os);
}
+ 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 ();
+ break;
- break;
+ case SIZEOF:
+ if (allocation_done != lang_first_phase_enum)
+ {
+ lang_output_section_statement_type *os;
- case ADDR:
+ os = lang_output_section_find (tree->name.name);
+ check (os, tree->name.name, "SIZEOF");
+ result = new_abs (os->bfd_section->_raw_size);
+ }
+ else
+ result = invalid ();
+ break;
- 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);
- }
- 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->size));
- }
- else {
- result = invalid();
+ default:
+ FAIL();
+ break;
}
- break;
-
- default:
- FAIL();
- break;
- }
return result;
}
-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
+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;
- }
- 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_code)
- {
- case ALIGN_K:
- if (allocation_done != lang_first_phase_enum) {
- result = new_rel_from_section(ALIGN(dot,
- result.value) ,
- current_section);
+ if (tree == NULL)
+ {
+ result.valid = false;
+ return result;
+ }
+
+ 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 = false;
+ else
+ result = new_rel ((tree->rel.value
+ + tree->rel.section->output_section->vma
+ + tree->rel.section->output_offset),
+ current_section);
+ break;
+
+ case etree_unary:
+ result = exp_fold_tree (tree->unary.child,
+ current_section,
+ allocation_done, dot, dotp);
+ if (result.valid)
+ {
+ 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 = false;
+ break;
+ case ABSOLUTE:
+ if (allocation_done != lang_first_phase_enum && result.valid)
+ {
+ result.value += result.section->bfd_section->vma;
+ result.section = abs_output_section;
}
- else {
- result.valid = false;
+ 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:
+ /* Return next place aligned to value. */
+ if (allocation_done == lang_allocating_phase_enum)
+ {
+ make_abs (&result);
+ result.value = ALIGN_N (dot, result.value);
}
- break;
- case '-':
- result.value = -result.value;
- break;
- case NEXT:
+ else
result.valid = 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) {
- result = exp_fold_tree(result.value ?
- tree->trinary.lhs:tree->trinary.rhs,
- current_section,
- allocation_done, dot, dotp);
+ default:
+ FAIL ();
+ break;
+ }
}
+ break;
- 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) {
+ 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:
+ case etree_provide:
+ 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) {
- info("%F%S invalid assignment to location counter\n");
- }
- else {
- if (current_section ==
- (lang_output_section_statement_type *)NULL) {
- info("%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) {
- info("%F%S cannot move location counter backwards");
- }
- else {
- *dotp = nextdot;
+ if (tree->type.node_class == etree_provide)
+ 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)
+ 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 {
- 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);
+ else
+ {
+ result = exp_fold_tree (tree->assign.src,
+ current_section, allocation_done,
+ dot, dotp);
if (result.valid)
{
- asymbol *def;
- asymbol **def_ptr = (asymbol **)ldmalloc(sizeof(asymbol **));
- /* Add this definition to script file */
- def = (asymbol *)bfd_make_empty_symbol(script_file->the_bfd);
- *def_ptr = def;
-
-
- def->value = result.value;
- if (result.section !=
- (lang_output_section_statement_type *)NULL) {
- if (current_section !=
- (lang_output_section_statement_type *)NULL) {
-
- def->section = result.section->bfd_section;
- def->flags = BSF_GLOBAL | BSF_EXPORT;
+ 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 {
- /* Force to absolute */
- def->value += result.section->bfd_section->vma;
- def->section = (asection *)NULL;
- def->flags = BSF_GLOBAL | BSF_EXPORT | BSF_ABSOLUTE;
+ 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;
}
-
-
- }
- else {
- def->section = (asection *)NULL;
- def->flags = BSF_GLOBAL | BSF_EXPORT | BSF_ABSOLUTE;
- }
-
-
- def->udata = (PTR)NULL;
- def->name = sy->name;
- Q_enter_global_ref(def_ptr);
}
-
}
+ break;
-
- break;
- case etree_name:
- result = fold_name(tree, current_section, allocation_done, dot);
- break;
- default:
- info("%F%S Need more of these %d",tree->type.node_class );
+ case etree_name:
+ result = fold_name (tree, current_section, allocation_done, dot);
+ break;
- }
- }
+ default:
+ FAIL ();
+ break;
+ }
return result;
}
-
-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;
+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);
}
etree_type *
-exp_binop(code, lhs, rhs)
-int code;
-etree_type *lhs;
-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, (lang_output_section_statement_type *)NULL,
+ r = exp_fold_tree_no_dot(&value,
+ abs_output_section,
lang_first_phase_enum );
if (r.valid)
{
return exp_intop(r.value);
}
- new = (etree_type *)ldmalloc(sizeof(new->binary));
+ new = (etree_type *) stat_alloc (sizeof (new->binary));
memcpy((char *)new, (char *)&value, sizeof(new->binary));
return new;
}
etree_type *
-exp_trinop(code, cond, lhs, rhs)
-int code;
-etree_type *cond;
-etree_type *lhs;
-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;
if (r.valid) {
return exp_intop(r.value);
}
- new = (etree_type *)ldmalloc(sizeof(new->trinary));
+ new = (etree_type *) stat_alloc (sizeof (new->trinary));
memcpy((char *)new,(char *) &value, sizeof(new->trinary));
return new;
}
etree_type *
-exp_unop(code, child)
-int code;
-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) {
+ r = exp_fold_tree_no_dot(&value,abs_output_section,
+ lang_first_phase_enum);
+ if (r.valid) {
return exp_intop(r.value);
}
- new = (etree_type *)ldmalloc(sizeof(new->unary));
+ new = (etree_type *) stat_alloc (sizeof (new->unary));
memcpy((char *)new, (char *)&value, sizeof(new->unary));
return new;
}
etree_type *
-exp_nameop(code, name)
-int code;
-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);
+ 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 *)ldmalloc(sizeof(new->name));
+ new = (etree_type *) stat_alloc (sizeof (new->name));
memcpy((char *)new, (char *)&value, sizeof(new->name));
return new;
etree_type *
-exp_assop(code, dst, src)
-int code;
-char *dst;
-etree_type *src;
+exp_assop (code, dst, src)
+ int code;
+ CONST char *dst;
+ etree_type *src;
{
etree_type value, *new;
return exp_intop(result);
}
#endif
- new = (etree_type*)ldmalloc(sizeof(new->assign));
+ new = (etree_type*) stat_alloc (sizeof (new->assign));
memcpy((char *)new, (char *)&value, sizeof(new->assign));
return new;
}
+/* Handle PROVIDE. */
+
+etree_type *
+exp_provide (dst, src)
+ const char *dst;
+ etree_type *src;
+{
+ 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;
+}
+
void
-exp_print_tree(outfile, tree)
-FILE *outfile;
-etree_type *tree;
+exp_print_tree (tree)
+ etree_type *tree;
{
switch (tree->type.node_class) {
case etree_value:
- fprintf(outfile,"0x%08lx",(bfd_vma)(tree->value.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(outfile,"%s (%x) ",tree->assign.dst->name,
+ fprintf(config.map_file,"%s (%x) ",tree->assign.dst->name,
tree->assign.dst->sdefs->value);
}
else {
- fprintf(outfile,"%s (UNDEFINED)",tree->assign.dst->name);
+ fprintf(config.map_file,"%s (UNDEFINED)",tree->assign.dst->name);
}
#endif
- fprintf(outfile,"%s ",tree->assign.dst);
- exp_print_token(outfile,tree->type.node_code);
- exp_print_tree(outfile,tree->assign.src);
+ 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:
+ fprintf (config.map_file, "PROVIDE (%s, ", tree->assign.dst);
+ exp_print_tree (tree->assign.src);
+ fprintf (config.map_file, ")");
break;
case etree_binary:
- exp_print_tree(outfile,tree->binary.lhs);
- exp_print_token(outfile,tree->type.node_code);
- exp_print_tree(outfile,tree->binary.rhs);
+ 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(outfile,tree->trinary.cond);
- fprintf(outfile,"?");
- exp_print_tree(outfile,tree->trinary.lhs);
- fprintf(outfile,":");
- exp_print_tree(outfile,tree->trinary.rhs);
+ 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(outfile,tree->unary.type.node_code);
- fprintf(outfile,"(");
- exp_print_tree(outfile,tree->unary.child);
- fprintf(outfile,")");
+ 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_undef:
- fprintf(outfile,"????????");
+ fprintf(config.map_file,"????????");
break;
case etree_name:
if (tree->type.node_code == NAME) {
- fprintf(outfile,"%s", tree->name.name);
+ fprintf(config.map_file,"%s", tree->name.name);
}
else {
- exp_print_token(outfile,tree->type.node_code);
- fprintf(outfile,"(%s)", tree->name.name);
+ exp_print_token(tree->type.node_code);
+ if (tree->name.name)
+ fprintf(config.map_file,"(%s)", tree->name.name);
}
break;
default:
}
}
-
-
-
bfd_vma
-exp_get_vma(tree, def, name, allocation_done)
-etree_type *tree;
-bfd_vma def;
-char *name;
-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,
- (lang_output_section_statement_type *)NULL,
- allocation_done);
- if (r.valid == false && name) {
- info("%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 && name != NULL)
+ einfo ("%F%S nonconstant expression for %s\n", name);
+ return r.value;
}
- return r.value;
- }
- else {
+ else
return def;
- }
}
int
-exp_get_value_int(tree,def,name, allocation_done)
-etree_type *tree;
-int def;
-char *name;
-lang_phase_type allocation_done;
+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);
}
+
+
+bfd_vma
+exp_get_abs_int (tree, def, name, allocation_done)
+ etree_type *tree;
+ int def;
+ 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)
+ {
+ res.value += res.section->bfd_section->vma;
+ }
+ else {
+ einfo ("%F%S non constant expression for %s\n",name);
+ }
+ return res.value;
+}
projects / deliverable / binutils-gdb.git / blobdiff