-/* Copyright (C) 1991 Free Software Foundation, Inc.
+/* This module handles expression trees.
+ Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ 2001, 2002
+ 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,
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. */
-/*
- $Id$
-*/
+/* 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;
-
+#include "libiberty.h"
+#include "safe-ctype.h"
+
+static void exp_print_token PARAMS ((token_code_type code, int infix_p));
+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, char *, 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_unary
+ 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_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_trinary
+ 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));
+
+struct exp_data_seg exp_data_seg;
+
+/* Print the string representation of the given token. Surround it
+ with spaces if INFIX_P is true. */
static void
-exp_print_token(outfile, code)
-FILE *outfile;
-token_code_type code;
+exp_print_token (code, infix_p)
+ token_code_type code;
+ int infix_p;
{
- static struct {
+ static const struct
+ {
token_code_type code;
- char *name;
- } table[] =
- {
- 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} ;
+ 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" },
+ { DATA_SEGMENT_ALIGN, "DATA_SEGMENT_ALIGN" },
+ { DATA_SEGMENT_END, "DATA_SEGMENT_END" }
+ };
+ unsigned int idx;
+ for (idx = 0; idx < ARRAY_SIZE (table); idx++)
+ if (table[idx].code == code)
+ break;
+ if (infix_p)
+ fputc (' ', config.map_file);
- unsigned int idx;
- for (idx = 0; table[idx].name != (char*)NULL; idx++) {
- if (table[idx].code == code) {
- fprintf(outfile, "%s", table[idx].name);
- return;
- }
- }
- /* Not in table, just print it alone */
- fprintf(outfile, "%c",code);
+ if (idx < ARRAY_SIZE (table))
+ fputs (table[idx].name, config.map_file);
+ else if (code < 127)
+ fputc (code, config.map_file);
+ else
+ fprintf (config.map_file, "<code %d>", code);
+
+ if (infix_p)
+ fputc (' ', config.map_file);
}
-static void
-make_abs(ptr)
-etree_value_type *ptr;
+static void
+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;
- }
-
+ asection *s = ptr->section->bfd_section;
+ ptr->value += s->vma;
+ 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.valid_p = true;
+ new.section = abs_output_section;
new.value = value;
return new;
}
-static void check(os)
-lang_output_section_statement_type *os;
+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) {
- info("%F%P undefined section");
- }
- if (os->processed == false) {
- info("%F%P forward reference of section");
- }
+ 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->value.str = NULL;
new->type.node_class = etree_value;
return new;
+}
+etree_type *
+exp_bigintop (value, str)
+ bfd_vma value;
+ char *str;
+{
+ etree_type *new = (etree_type *) stat_alloc (sizeof (new->value));
+ new->type.node_code = INT;
+ new->value.value = value;
+ new->value.str = str;
+ new->type.node_class = etree_value;
+ return new;
}
+/* Build an expression representing an unnamed relocateable value. */
-static
-etree_value_type new_rel(value, section)
-bfd_vma value;
-lang_output_section_statement_type *section;
+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, str, section)
+ bfd_vma value;
+ char *str;
+ lang_output_section_statement_type *section;
{
etree_value_type new;
- new.valid = true;
+ new.valid_p = true;
new.value = value;
+ new.str = str;
new.section = section;
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.valid_p = true;
new.value = value;
+ new.str = NULL;
new.section = section;
- if (new.section != (lang_output_section_statement_type *)NULL) {
- new.value -= section->bfd_section->vma;
- }
+
+ 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;
+static etree_value_type
+fold_unary (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,
- allocation_done, dot, dotp);
- if (result.valid) {
- etree_value_type other;
- other = exp_fold_tree(tree->binary.rhs,
+ result = exp_fold_tree (tree->unary.child,
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)
+ allocation_done, dot, dotp);
+ if (result.valid_p)
+ {
+ switch (tree->type.node_code)
{
- case '%':
- /* Mod, both absolule*/
+ 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.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;
- if (other.value == 0) {
- info("%F%S % by zero\n");
- }
- result.value %= other.value;
+ case '-':
+ make_abs (&result);
+ result.value = -result.value;
break;
- case '/':
- if (other.value == 0) {
- info("%F%S / by zero\n");
- }
- result.value /= other.value;
+
+ 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;
-#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 DATA_SEGMENT_END:
+ if (allocation_done != lang_first_phase_enum
+ && current_section == abs_output_section
+ && (exp_data_seg.phase == exp_dataseg_align_seen
+ || exp_data_seg.phase == exp_dataseg_adjust
+ || allocation_done != lang_allocating_phase_enum))
+ {
+ if (exp_data_seg.phase == exp_dataseg_align_seen)
+ {
+ exp_data_seg.phase = exp_dataseg_end_seen;
+ exp_data_seg.end = result.value;
+ }
+ }
+ else
+ result.valid_p = false;
+ break;
+
default:
- FAIL();
+ FAIL ();
+ break;
}
}
- }
+
return result;
}
-etree_value_type invalid()
+
+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,
+ allocation_done, dot, dotp);
+ 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 == '-'))
+ {
+ if (other.section != abs_output_section)
+ {
+ /* Keep the section of the other term. */
+ if (tree->type.node_code == '+')
+ other.value = result.value + other.value;
+ else
+ other.value = result.value - other.value;
+ return other;
+ }
+ }
+ 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;
+
+ case DATA_SEGMENT_ALIGN:
+ if (allocation_done != lang_first_phase_enum
+ && current_section == abs_output_section
+ && (exp_data_seg.phase == exp_dataseg_none
+ || exp_data_seg.phase == exp_dataseg_adjust
+ || allocation_done != lang_allocating_phase_enum))
+ {
+ bfd_vma maxpage = result.value;
+
+ result.value = align_n (dot, maxpage);
+ if (exp_data_seg.phase != exp_dataseg_adjust)
+ {
+ result.value += dot & (maxpage - 1);
+ if (allocation_done == lang_allocating_phase_enum)
+ {
+ exp_data_seg.phase = exp_dataseg_align_seen;
+ exp_data_seg.base = result.value;
+ exp_data_seg.pagesize = other.value;
+ }
+ }
+ else if (other.value < maxpage)
+ result.value += (dot + other.value - 1)
+ & (maxpage - other.value);
+ }
+ else
+ result.valid_p = false;
+ break;
+
+ default:
+ FAIL ();
+ }
+ }
+ else
+ {
+ result.valid_p = false;
+ }
+ }
+
+ return result;
+}
+
+static etree_value_type
+fold_trinary (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->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);
+
+ return result;
+}
+
+etree_value_type
+invalid ()
{
etree_value_type new;
- new.valid = false;
+ new.valid_p = 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)
+
+ 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));
+ }
+ else
+ {
+ result.valid_p = false;
+ }
+ break;
case DEFINED:
- result.value =
- ldsym_get_soft(tree->name.name) != (ldsym_type *)NULL;
- result.section = 0;
- result.valid = true;
+ 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 = 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();
+ 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_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);
- }
+ 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),
+ NULL,
+ os);
+ }
+ }
}
- }
- if (result.valid == false) {
- info("%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;
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);
- result = new_rel((bfd_vma)0, os);
- }
- else {
- result = invalid();
- }
+ os = lang_output_section_find (tree->name.name);
+ check (os, tree->name.name, "ADDR");
+ result = new_rel (0, NULL, 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, NULL, os);
+ else
+ result = exp_fold_tree_no_dot (os->load_base,
+ abs_output_section,
+ allocation_done);
+ }
+ 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);
- result = new_abs((bfd_vma)(os->bfd_section->size));
- }
- else {
- result = invalid();
- }
+ 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);
+ }
+ else
+ result = invalid ();
break;
default:
- FAIL();
+ 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_p = false;
+ return result;
+ }
- }
- else {
- result.valid = false;
- }
- break;
- case '-':
- result.value = -result.value;
- break;
- case NEXT:
- result.valid = false;
- break;
- default:
- FAIL();
- }
- }
-
- 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);
+ switch (tree->type.node_class)
+ {
+ case etree_value:
+ result = new_rel (tree->value.value, tree->value.str, 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),
+ NULL,
+ current_section);
+ break;
+
+ case etree_assert:
+ result = exp_fold_tree (tree->assert_s.child,
+ current_section,
+ allocation_done, dot, dotp);
+ if (result.valid_p)
+ {
+ if (! result.value)
+ einfo ("%F%P: %s\n", tree->assert_s.message);
+ return result;
}
+ break;
- break;
- case etree_binary:
- result = fold_binary(tree, current_section, allocation_done,
+ case etree_unary:
+ result = fold_unary (tree, current_section, allocation_done,
+ dot, dotp);
+ break;
+
+ case etree_binary:
+ result = fold_binary (tree, current_section, allocation_done,
+ dot, dotp);
+ break;
+
+ case etree_trinary:
+ result = fold_trinary (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) {
- 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;
+ 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,
+ allocation_done, 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 {
- 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)
+ else
+ {
+ result = exp_fold_tree (tree->assign.src,
+ current_section, allocation_done,
+ dot, dotp);
+ if (result.valid_p)
{
- 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;
+ if (tree->type.node_class == etree_provide)
+ tree->type.node_class = etree_provided;
}
-
-
- }
- 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);
+ 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,
- 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 *)ldmalloc(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 *
-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;
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 *)ldmalloc(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 *
-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) {
- return exp_intop(r.value);
- }
- new = (etree_type *)ldmalloc(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 *
-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);
+ 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 *)ldmalloc(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 *
-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;
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*)ldmalloc(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
-exp_print_tree(outfile, tree)
-FILE *outfile;
-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:
- fprintf(outfile,"0x%08lx",(bfd_vma)(tree->value.value));
- return;
- case etree_assign:
-#if 0
- if (tree->assign.dst->sdefs != (asymbol *)NULL){
- fprintf(outfile,"%s (%x) ",tree->assign.dst->name,
- tree->assign.dst->sdefs->value);
- }
- else {
- fprintf(outfile,"%s (UNDEFINED)",tree->assign.dst->name);
+ 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;
+}
+
+/* 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)
+ {
+ minfo ("NULL TREE\n");
+ return;
}
+
+ 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(outfile,"%s ",tree->assign.dst);
- exp_print_token(outfile,tree->type.node_code);
- exp_print_tree(outfile,tree->assign.src);
- 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);
- 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);
- break;
- case etree_unary:
- exp_print_token(outfile,tree->unary.type.node_code);
- fprintf(outfile,"(");
- exp_print_tree(outfile,tree->unary.child);
- fprintf(outfile,")");
- break;
- case etree_undef:
- fprintf(outfile,"????????");
- break;
- case etree_name:
- if (tree->type.node_code == NAME) {
- fprintf(outfile,"%s", tree->name.name);
- }
- else {
- exp_print_token(outfile,tree->type.node_code);
- fprintf(outfile,"(%s)", tree->name.name);
+ fprintf (config.map_file, "%s", tree->assign.dst);
+ exp_print_token (tree->type.node_code, true);
+ 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, true);
+ 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, false);
+ 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, false);
+ if (tree->name.name)
+ fprintf (config.map_file, " (%s)", tree->name.name);
+ }
+ break;
+ default:
+ FAIL ();
+ break;
}
- break;
- default:
- FAIL();
- break;
- }
}
+bfd_vma
+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 != 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;
+ }
+ 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;
+{
+ return (int) exp_get_vma (tree, (bfd_vma) def, name, allocation_done);
+}
-bfd_vma
-exp_get_vma(tree, def, name, allocation_done)
-etree_type *tree;
-bfd_vma def;
-char *name;
-lang_phase_type allocation_done;
+fill_type *
+exp_get_fill (tree, def, name, allocation_done)
+ etree_type *tree;
+ fill_type *def;
+ char *name;
+ lang_phase_type allocation_done;
{
+ fill_type *fill;
etree_value_type r;
+ size_t len;
+ unsigned int val;
- 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);
- }
- return r.value;
- }
- else {
+ if (tree == NULL)
return def;
- }
+
+ 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);
+
+ if (r.str != NULL && (len = strlen (r.str)) != 0)
+ {
+ unsigned char *dst;
+ unsigned char *s;
+ fill = (fill_type *) xmalloc ((len + 1) / 2 + sizeof (*fill) - 1);
+ fill->size = (len + 1) / 2;
+ dst = fill->data;
+ s = r.str;
+ val = 0;
+ do
+ {
+ unsigned int digit;
+
+ digit = *s++ - '0';
+ if (digit > 9)
+ digit = (digit - 'A' + '0' + 10) & 0xf;
+ val <<= 4;
+ val += digit;
+ --len;
+ if ((len & 1) == 0)
+ {
+ *dst++ = val;
+ val = 0;
+ }
+ }
+ while (len != 0);
+ }
+ else
+ {
+ fill = (fill_type *) xmalloc (4 + sizeof (*fill) - 1);
+ val = r.value;
+ fill->data[0] = (val >> 24) & 0xff;
+ fill->data[1] = (val >> 16) & 0xff;
+ fill->data[2] = (val >> 8) & 0xff;
+ fill->data[3] = (val >> 0) & 0xff;
+ fill->size = 4;
+ }
+ return fill;
}
-int
-exp_get_value_int(tree,def,name, allocation_done)
-etree_type *tree;
-int def;
-char *name;
-lang_phase_type 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;
{
- return (int)exp_get_vma(tree,(bfd_vma)def,name, 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;
+}
+
+bfd_vma align_n (value, align)
+ bfd_vma value;
+ bfd_vma align;
+{
+ if (align <= 1)
+ return value;
+
+ value = (value + align - 1) / align;
+ return value * align;
}
projects / deliverable / binutils-gdb.git / blobdiff