2 * Copyright (c) 1999 John D. Polstra
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #ifndef _SYS_LINKER_SET_H_
30 #define _SYS_LINKER_SET_H_
33 * The following macros are used to declare global sets of objects, which
34 * are collected by the linker into a `struct linker_set' as defined below.
35 * For ELF, this is done by constructing a separate segment for each set.
36 * For a.out, it is done automatically by the linker.
38 * In the MAKE_SET macros below, the lines:
40 * static void const * const __set_##set##_sym_##sym = &sym;
42 * are present only to prevent the compiler from producing bogus
43 * warnings about unused symbols.
47 #if defined(__alpha__) || defined(__ia64__)
48 #define MAKE_SET(set, sym) \
49 static void const * const __set_##set##_sym_##sym = &sym; \
50 __asm(".section .set." #set ",\"aw\""); \
51 __asm(".p2align 3"); \
52 __asm(".quad " #sym); \
55 #define MAKE_SET(set, sym) \
56 static void const * const __set_##set##_sym_##sym = &sym; \
57 __asm(".section .set." #set ",\"aw\""); \
58 __asm(".p2align 2"); \
59 __asm(".long " #sym); \
62 #define TEXT_SET(set, sym) MAKE_SET(set, sym)
63 #define DATA_SET(set, sym) MAKE_SET(set, sym)
68 * NB: the constants defined below must match those defined in
69 * ld/ld.h. Since their calculation requires arithmetic, we
70 * can't name them symbolically (e.g., 23 is N_SETT | N_EXT).
72 #define MAKE_SET(set, sym, type) \
73 static void const * const __set_##set##_sym_##sym = &sym; \
74 __asm(".stabs \"" #set "\", " #type ", 0, 0, " #sym)
75 #define TEXT_SET(set, sym) MAKE_SET(set, sym, 23)
76 #define DATA_SET(set, sym) MAKE_SET(set, sym, 25)
82 void *ls_items[1]; /* really ls_length of them,
86 #endif /* _SYS_LINKER_SET_H_ */