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 */ |
75 | |