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/* ----------------------------------------------------------------------- *
*
* Copyright 1996-2018 The NASM Authors - All Rights Reserved
* See the file AUTHORS included with the NASM distribution for
* the specific copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ----------------------------------------------------------------------- */
/*
* labels.h header file for labels.c
*/
#ifndef LABELS_H
#define LABELS_H
#include "compiler.h"
enum mangle_index {
LM_LPREFIX, /* Local variable prefix */
LM_LSUFFIX, /* Local variable suffix */
LM_GPREFIX, /* Global variable prefix */
LM_GSUFFIX /* GLobal variable suffix */
};
enum label_type {
LBL_none = -1, /* No label */
LBL_LOCAL = 0, /* Must be zero */
LBL_STATIC,
LBL_GLOBAL,
LBL_EXTERN,
LBL_REQUIRED, /* Like extern but emit even if unused */
LBL_COMMON,
LBL_SPECIAL, /* Magic symbols like ..start */
LBL_BACKEND /* Backend-defined symbols like ..got */
};
enum label_type lookup_label(const char *label, int32_t *segment, int64_t *offset);
static inline bool is_extern(enum label_type type)
{
return type == LBL_EXTERN || type == LBL_REQUIRED;
}
void define_label(const char *label, int32_t segment, int64_t offset,
bool normal);
void backend_label(const char *label, int32_t segment, int64_t offset);
bool declare_label(const char *label, enum label_type type,
const char *special);
void set_label_mangle(enum mangle_index which, const char *what);
int init_labels(void);
void cleanup_labels(void);
const char *local_scope(const char *label);
extern uint64_t global_offset_changed;
#endif /* LABELS_H */
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