ld/ldexp.h

   1 /* ldexp.h -
   2    Copyright 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001, 2002
   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   char *str;
  29   struct lang_output_section_statement_struct *section;
  30   boolean valid_p;
  31 } etree_value_type;
  32
  33 typedef struct {
  34   int node_code;
  35   enum { etree_binary,
  36            etree_trinary,
  37            etree_unary,
  38            etree_name,
  39            etree_assign,
  40            etree_provide,
  41            etree_provided,
  42            etree_undef,
  43            etree_unspec,
  44            etree_value,
  45            etree_assert,
  46            etree_rel } node_class;
  47 } node_type;
  48
  49 typedef union etree_union {
  50   node_type type;
  51   struct {
  52     node_type type;
  53     union etree_union *lhs;
  54     union etree_union *rhs;
  55   } binary;
  56   struct {
  57     node_type type;
  58     union etree_union *cond;
  59     union etree_union *lhs;
  60     union etree_union *rhs;
  61   } trinary;
  62   struct {
  63     node_type type;
  64     const char *dst;
  65     union etree_union *src;
  66   } assign;
  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     char *str;
  79   } value;
  80   struct {
  81     node_type type;
  82     asection *section;
  83     bfd_vma value;
  84   } rel;
  85   struct {
  86     node_type type;
  87     union etree_union *child;
  88     const char *message;
  89   } assert_s;
  90 } etree_type;
  91
  92 extern struct exp_data_seg {
  93   enum {
  94     exp_dataseg_none,
  95     exp_dataseg_align_seen,
  96     exp_dataseg_end_seen,
  97     exp_dataseg_adjust
  98   } phase;
  99   bfd_vma base, end, pagesize;
 100 } exp_data_seg;
 101
 102 typedef struct _fill_type fill_type;
 103
 104 etree_type *exp_intop PARAMS ((bfd_vma));
 105 etree_type *exp_bigintop PARAMS ((bfd_vma, char *));
 106 etree_type *exp_relop PARAMS ((asection *, bfd_vma));
 107 etree_value_type invalid PARAMS ((void));
 108 etree_value_type exp_fold_tree PARAMS ((etree_type *, struct
 109                                         lang_output_section_statement_struct *,
 110                                         lang_phase_type,
 111                                         bfd_vma, bfd_vma *));
 112 etree_type *exp_binop PARAMS ((int, etree_type *, etree_type *));
 113 etree_type *exp_trinop PARAMS ((int,etree_type *, etree_type *, etree_type *));
 114 etree_type *exp_unop PARAMS ((int, etree_type *));
 115 etree_type *exp_nameop PARAMS ((int, const char *));
 116 etree_type *exp_assop PARAMS ((int, const char *, etree_type *));
 117 etree_type *exp_provide PARAMS ((const char *, etree_type *));
 118 etree_type *exp_assert PARAMS ((etree_type *, const char *));
 119 void exp_print_tree PARAMS ((etree_type *));
 120 bfd_vma exp_get_vma PARAMS ((etree_type *, bfd_vma, char *, lang_phase_type));
 121 int exp_get_value_int PARAMS ((etree_type *, int, char *, lang_phase_type));
 122 fill_type *exp_get_fill PARAMS ((etree_type *, fill_type *, char *,
 123                                  lang_phase_type));
 124 bfd_vma exp_get_abs_int PARAMS ((etree_type *, int, char *, lang_phase_type));
 125
 126 #endif