ld/ldexp.h

   1 /* ldexp.h -
   2    Copyright 1991, 92, 93, 94, 95, 1998 Free Software Foundation, Inc.
   3
   4    This file is part of GLD, the Gnu Linker.
   5
   6    GLD is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    GLD is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with GLD; see the file COPYING.  If not, write to the Free
  18    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  19    02111-1307, USA.  */
  20
  21 #ifndef LDEXP_H
  22 #define LDEXP_H
  23
  24 /* The result of an expression tree */
  25 typedef struct
  26 {
  27   bfd_vma value;
  28   struct lang_output_section_statement_struct *section;
  29   boolean valid_p;
  30 } etree_value_type;
  31
  32
  33
  34 typedef struct
  35 {
  36   int node_code;
  37   enum { etree_binary,
  38            etree_trinary,
  39            etree_unary,
  40            etree_name,
  41            etree_assign,
  42            etree_provide,
  43            etree_undef,
  44            etree_unspec,
  45            etree_value,
  46            etree_assert,
  47            etree_rel } node_class;
  48 } node_type;
  49
  50
  51
  52 typedef union etree_union
  53 {
  54   node_type type;
  55   struct {
  56     node_type type;
  57     union etree_union *lhs;
  58     union etree_union *rhs;
  59   } binary;
  60   struct {
  61     node_type type;
  62     union etree_union *cond;
  63     union etree_union *lhs;
  64     union etree_union *rhs;
  65   } trinary;
  66   struct {
  67     node_type type;
  68     CONST char *dst;
  69     union etree_union *src;
  70   } assign;
  71
  72   struct {
  73     node_type type;
  74     union   etree_union *child;
  75   } unary;
  76   struct {
  77     node_type type;
  78    CONST char *name;
  79   } name;
  80   struct {
  81     node_type type;
  82     bfd_vma value;
  83   } value;
  84   struct {
  85     node_type type;
  86     asection *section;
  87     bfd_vma value;
  88   } rel;
  89   struct {
  90     node_type type;
  91     union etree_union *child;
  92     const char *message;
  93   } assert_s;
  94 } etree_type;
  95
  96
  97 etree_type *exp_intop PARAMS ((bfd_vma));
  98 etree_type *exp_relop PARAMS ((asection *, bfd_vma));
  99 etree_value_type invalid PARAMS ((void));
 100 etree_value_type exp_fold_tree PARAMS ((etree_type *, struct
 101                                         lang_output_section_statement_struct *,
 102                                         lang_phase_type,
 103                                         bfd_vma, bfd_vma *));
 104 etree_type *exp_binop PARAMS ((int, etree_type *, etree_type *));
 105 etree_type *exp_trinop PARAMS ((int,etree_type *, etree_type *, etree_type *));
 106 etree_type *exp_unop PARAMS ((int, etree_type *));
 107 etree_type *exp_nameop PARAMS ((int, CONST char *));
 108 etree_type *exp_assop PARAMS ((int, CONST char *, etree_type *));
 109 etree_type *exp_provide PARAMS ((const char *, etree_type *));
 110 etree_type *exp_assert PARAMS ((etree_type *, const char *));
 111 void exp_print_tree PARAMS ((etree_type *));
 112 bfd_vma exp_get_vma PARAMS ((etree_type *, bfd_vma, char *, lang_phase_type));
 113 int exp_get_value_int PARAMS ((etree_type *, int, char *,lang_phase_type));
 114 bfd_vma exp_get_abs_int PARAMS ((etree_type *, int, char *,lang_phase_type));
 115
 116 #endif