include/labels.h

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 1996-2018 The NASM Authors - All Rights Reserved
   4  *   See the file AUTHORS included with the NASM distribution for
   5  *   the specific copyright holders.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following
   9  *   conditions are met:
  10  *
  11  *   * Redistributions of source code must retain the above copyright
  12  *     notice, this list of conditions and the following disclaimer.
  13  *   * Redistributions in binary form must reproduce the above
  14  *     copyright notice, this list of conditions and the following
  15  *     disclaimer in the documentation and/or other materials provided
  16  *     with the distribution.
  17  *
  18  *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  19  *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  20  *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  21  *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  22  *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  23  *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24  *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25  *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  26  *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  29  *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  30  *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  * ----------------------------------------------------------------------- */
  33
  34 /*
  35  * labels.h  header file for labels.c
  36  */
  37
  38 #ifndef LABELS_H
  39 #define LABELS_H
  40
  41 #include "compiler.h"
  42
  43 enum mangle_index {
  44     LM_LPREFIX,                 /* Local variable prefix */
  45     LM_LSUFFIX,                 /* Local variable suffix */
  46     LM_GPREFIX,                 /* Global variable prefix */
  47     LM_GSUFFIX                  /* GLobal variable suffix */
  48 };
  49
  50 enum label_type {
  51     LBL_LOCAL,                  /* Must be zero */
  52     LBL_GLOBAL,
  53     LBL_STATIC,
  54     LBL_EXTERN,
  55     LBL_COMMON,
  56     LBL_SPECIAL,                /* Magic symbols like ..start */
  57     LBL_BACKEND                 /* Backend-defined symbols like ..got */
  58 };
  59
  60 bool lookup_label(const char *label, int32_t *segment, int64_t *offset);
  61 bool is_extern(const char *label);
  62 void define_label(const char *label, int32_t segment, int64_t offset,
  63                   bool normal);
  64 void backend_label(const char *label, int32_t segment, int64_t offset);
  65 bool declare_label(const char *label, enum label_type type,
  66                    const char *special);
  67 void set_label_mangle(enum mangle_index which, const char *what);
  68 int init_labels(void);
  69 void cleanup_labels(void);
  70 const char *local_scope(const char *label);
  71
  72 extern uint64_t global_offset_changed;
  73
  74 #endif /* LABELS_H */