2 Copyright 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001, 2002,
3 2003, 2004, 2005, 2007, 2011 Free Software Foundation, Inc.
5 This file is part of the GNU Binutils.
7 This program 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 3 of the License, or
10 (at your option) any later version.
12 This program 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.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
25 /* The result of an expression tree */
49 enum node_tree_enum node_class;
52 typedef union etree_union {
56 union etree_union *lhs;
57 union etree_union *rhs;
61 union etree_union *cond;
62 union etree_union *lhs;
63 union etree_union *rhs;
68 union etree_union *src;
73 union etree_union *child;
91 union etree_union *child;
97 lang_first_phase_enum,
99 lang_allocating_phase_enum,
100 lang_final_phase_enum
103 union lang_statement_union;
106 /* We step through the first four states here as we see the
107 associated linker script tokens. */
109 exp_dataseg_align_seen,
110 exp_dataseg_relro_seen,
111 exp_dataseg_end_seen,
112 /* The last three states are final, and affect the value returned
113 by DATA_SEGMENT_ALIGN. */
114 exp_dataseg_relro_adjust,
120 exp_dataseg_relro_none,
121 exp_dataseg_relro_start,
122 exp_dataseg_relro_end,
125 struct ldexp_control {
126 /* Modify expression evaluation depending on this. */
127 lang_phase_type phase;
129 /* Principally used for diagnostics. */
130 bfd_boolean assigning_to_dot;
132 /* Working results. */
133 etree_value_type result;
135 /* Set if an expression contains DEFINED(). */
136 bfd_boolean uses_defined;
138 /* Current dot and section passed to ldexp folder. */
142 /* State machine and results for DATASEG. */
144 enum phase_enum phase;
146 bfd_vma base, min_base, relro_end, end, pagesize, maxpagesize;
148 enum relro_enum relro;
150 union lang_statement_union *relro_start_stat;
151 union lang_statement_union *relro_end_stat;
155 extern struct ldexp_control expld;
157 /* A maps from a segment name to a base address. */
158 typedef struct segment_struct {
159 /* The next segment in the linked list. */
160 struct segment_struct *next;
161 /* The name of the sgement. */
163 /* The base address for the segment. */
165 /* True if a SEGMENT_START directive corresponding to this segment
170 /* The segments specified by the user on the command-line. */
171 extern segment_type *segments;
173 typedef struct _fill_type fill_type;
175 etree_type *exp_intop
177 etree_type *exp_bigintop
179 etree_type *exp_relop
180 (asection *, bfd_vma);
182 (etree_type *, asection *, bfd_vma *);
183 void exp_fold_tree_no_dot
185 etree_type *exp_binop
186 (int, etree_type *, etree_type *);
187 etree_type *exp_trinop
188 (int,etree_type *, etree_type *, etree_type *);
191 etree_type *exp_nameop
193 etree_type *exp_assign
194 (const char *, etree_type *);
195 etree_type *exp_defsym
196 (const char *, etree_type *);
197 etree_type *exp_provide
198 (const char *, etree_type *, bfd_boolean);
199 etree_type *exp_assert
200 (etree_type *, const char *);
204 (etree_type *, bfd_vma, char *);
205 int exp_get_value_int
206 (etree_type *, int, char *);
207 fill_type *exp_get_fill
208 (etree_type *, fill_type *, char *);
209 bfd_vma exp_get_abs_int
210 (etree_type *, int, char *);