ld/ldexp.h

   1 /* ldexp.h -
   2    Copyright 1991, 92, 93, 94, 95, 98, 2000
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GLD, the Gnu Linker.
   6
   7    GLD is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2, or (at your option)
  10    any later version.
  11
  12    GLD is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GLD; see the file COPYING.  If not, write to the Free
  19    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20    02111-1307, USA.  */
  21
  22 #ifndef LDEXP_H
  23 #define LDEXP_H
  24
  25 /* The result of an expression tree */
  26 typedef struct {
  27   bfd_vma value;
  28   struct lang_output_section_statement_struct *section;
  29   boolean valid_p;
  30 } etree_value_type;
  31
  32 typedef struct {
  33   int node_code;
  34   enum { etree_binary,
  35            etree_trinary,
  36            etree_unary,
  37            etree_name,
  38            etree_assign,
  39            etree_provide,
  40            etree_provided,
  41            etree_undef,
  42            etree_unspec,
  43            etree_value,
  44            etree_assert,
  45            etree_rel } node_class;
  46 } node_type;
  47
  48 typedef union etree_union {
  49   node_type type;
  50   struct {
  51     node_type type;
  52     union etree_union *lhs;
  53     union etree_union *rhs;
  54   } binary;
  55   struct {
  56     node_type type;
  57     union etree_union *cond;
  58     union etree_union *lhs;
  59     union etree_union *rhs;
  60   } trinary;
  61   struct {
  62     node_type type;
  63     CONST char *dst;
  64     union etree_union *src;
  65   } assign;
  66
  67   struct {
  68     node_type type;
  69     union etree_union *child;
  70   } unary;
  71   struct {
  72     node_type type;
  73     CONST char *name;
  74   } name;
  75   struct {
  76     node_type type;
  77     bfd_vma value;
  78   } value;
  79   struct {
  80     node_type type;
  81     asection *section;
  82     bfd_vma value;
  83   } rel;
  84   struct {
  85     node_type type;
  86     union etree_union *child;
  87     const char *message;
  88   } assert_s;
  89 } etree_type;
  90
  91 etree_type *exp_intop PARAMS ((bfd_vma));
  92 etree_type *exp_relop PARAMS ((asection *, bfd_vma));
  93 etree_value_type invalid PARAMS ((void));
  94 etree_value_type exp_fold_tree PARAMS ((etree_type *, struct
  95                                         lang_output_section_statement_struct *,
  96                                         lang_phase_type,
  97                                         bfd_vma, bfd_vma *));
  98 etree_type *exp_binop PARAMS ((int, etree_type *, etree_type *));
  99 etree_type *exp_trinop PARAMS ((int,etree_type *, etree_type *, etree_type *));
 100 etree_type *exp_unop PARAMS ((int, etree_type *));
 101 etree_type *exp_nameop PARAMS ((int, CONST char *));
 102 etree_type *exp_assop PARAMS ((int, CONST char *, etree_type *));
 103 etree_type *exp_provide PARAMS ((const char *, etree_type *));
 104 etree_type *exp_assert PARAMS ((etree_type *, const char *));
 105 void exp_print_tree PARAMS ((etree_type *));
 106 bfd_vma exp_get_vma PARAMS ((etree_type *, bfd_vma, char *, lang_phase_type));
 107 int exp_get_value_int PARAMS ((etree_type *, int, char *, lang_phase_type));
 108 bfd_vma exp_get_abs_int PARAMS ((etree_type *, int, char *, lang_phase_type));
 109
 110 #endif