1 /* vi: set sw=4 ts=4: */
3 * Copyright (C) 2000-2005 by Erik Andersen <andersen@codepoet.org>
5 * GNU Lesser General Public License version 2.1 or later.
13 /* Prepare for the case that `__builtin_expect' is not available. */
14 #if defined __GNUC__ && __GNUC__ == 2 && __GNUC_MINOR__ < 96
15 #define __builtin_expect(x, expected_value) (x)
18 # define likely(x) __builtin_expect((!!(x)),1)
21 # define unlikely(x) __builtin_expect((!!(x)),0)
23 #ifndef __LINUX_COMPILER_H
24 #define __LINUX_COMPILER_H
27 /* Pull in compiler and arch stuff */
30 #include <stddef.h> /* for ptrdiff_t */
33 /* We need this if arch has only new syscalls defined */
37 #include <bits/fcntl.h>
38 #include <bits/wordsize.h>
39 /* Pull in the arch specific type information */
40 #include <sys/types.h>
41 /* Pull in the arch specific page size */
42 #include <bits/uClibc_page.h>
43 /* Pull in the MIN macro */
44 #include <sys/param.h>
45 /* Pull in the ldso syscalls and string functions */
46 #ifndef __ARCH_HAS_NO_SHARED__
47 #include <dl-syscall.h>
48 #include <dl-string.h>
49 /* Now the ldso specific headers */
51 #ifdef __UCLIBC_HAS_TLS__
57 /* common align masks, if not specified by sysdep headers */
59 #define ADDR_ALIGN (_dl_pagesize - 1)
63 #define PAGE_ALIGN (~ADDR_ALIGN)
67 #define OFFS_ALIGN (PAGE_ALIGN & ~(1ul << (sizeof(_dl_pagesize) * 8 - 1)))
70 /* For INIT/FINI dependency sorting. */
71 struct init_fini_list {
72 struct init_fini_list *next;
73 struct elf_resolve *tpnt;
76 /* Global variables used within the shared library loader */
77 extern char *_dl_library_path; /* Where we look for libraries */
78 extern char *_dl_preload; /* Things to be loaded before the libs */
79 #ifdef __LDSO_SEARCH_INTERP_PATH__
80 extern const char *_dl_ldsopath; /* Where the shared lib loader was found */
82 extern const char *_dl_progname; /* The name of the executable being run */
83 extern size_t _dl_pagesize; /* Store the page size for use later */
84 #ifdef __LDSO_PRELINK_SUPPORT__
85 extern char *_dl_trace_prelink; /* Library for prelinking trace */
86 extern struct elf_resolve *_dl_trace_prelink_map; /* Library map for prelinking trace */
88 #define _dl_trace_prelink 0
91 extern void **_dl_ldso_dsbt;
94 #if defined(USE_TLS) && USE_TLS
95 extern void _dl_add_to_slotinfo (struct link_map *l);
96 extern void ** __attribute__ ((const)) _dl_initial_error_catch_tsd (void);
100 void _dl_add_to_slotinfo (struct link_map *l);
101 void ** __attribute__ ((const)) _dl_initial_error_catch_tsd (void);
103 #ifdef __SUPPORT_LD_DEBUG__
104 extern char *_dl_debug;
105 extern char *_dl_debug_symbols;
106 extern char *_dl_debug_move;
107 extern char *_dl_debug_reloc;
108 extern char *_dl_debug_detail;
109 extern char *_dl_debug_nofixups;
110 extern char *_dl_debug_bindings;
111 extern int _dl_debug_file;
112 # define __dl_debug_dprint(fmt, args...) \
113 _dl_dprintf(_dl_debug_file, "%s:%i: " fmt, __func__, __LINE__, ## args);
114 # define _dl_if_debug_dprint(fmt, args...) \
115 do { if (_dl_debug) __dl_debug_dprint(fmt, ## args); } while (0)
117 # define __dl_debug_dprint(fmt, args...) do {} while (0)
118 # define _dl_if_debug_dprint(fmt, args...) do {} while (0)
119 /* disabled on purpose, _dl_debug_file should be guarded by __SUPPORT_LD_DEBUG__
120 # define _dl_debug_file 2*/
121 #endif /* __SUPPORT_LD_DEBUG__ */
124 # ifdef __SUPPORT_LD_DEBUG__
125 # define _dl_assert(expr) \
128 __dl_debug_dprint("assert(%s)\n", #expr); \
133 # define _dl_assert(expr) ((void)0)
137 # define _dl_assert(expr) assert(expr)
140 #ifdef __SUPPORT_LD_DEBUG_EARLY__
141 # define _dl_debug_early(fmt, args...) __dl_debug_dprint(fmt, ## args)
143 # define _dl_debug_early(fmt, args...) do {} while (0)
144 #endif /* __SUPPORT_LD_DEBUG_EARLY__ */
147 #define NULL ((void *) 0)
150 extern void *_dl_malloc(size_t size);
151 extern void *_dl_calloc(size_t __nmemb, size_t __size);
152 extern void *_dl_realloc(void *__ptr, size_t __size);
153 extern void _dl_free(void *);
154 extern char *_dl_getenv(const char *symbol, char **envp);
155 extern void _dl_unsetenv(const char *symbol, char **envp);
157 extern char *_dl_strdup(const char *string);
158 extern void _dl_dprintf(int, const char *, ...);
161 # define _dl_strdup strdup
164 # define _dl_dprintf dprintf
166 # define _dl_dprintf(fd, fmt, args...) fprintf(stderr, fmt, ## args)
170 #ifndef DL_GET_READY_TO_RUN_EXTRA_PARMS
171 # define DL_GET_READY_TO_RUN_EXTRA_PARMS
173 #ifndef DL_GET_READY_TO_RUN_EXTRA_ARGS
174 # define DL_GET_READY_TO_RUN_EXTRA_ARGS
177 extern void *_dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
178 ElfW(auxv_t) auxvt[AT_EGID + 1], char **envp, char **argv
179 DL_GET_READY_TO_RUN_EXTRA_PARMS);
181 #ifdef HAVE_DL_INLINES_H
182 #include <dl-inlines.h>
185 #else /* __ARCH_HAS_NO_SHARED__ */