eliminate costly tricks to avoid TLS access for current locale state

[musl] / src / internal / libc.h

diff --git a/src/internal/libc.h b/src/internal/libc.h
index 39a1865..212f0e8 100644 (file)
--- a/src/internal/libc.h
+++ b/src/internal/libc.h
@@ -3,29 +3,35 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <limits.h>
+
+struct __locale_map;
+
+struct __locale_struct {
+       volatile int ctype_utf8;
+       char *messages_name;
+       struct __locale_map *volatile cat[4];
+};
 
 struct __libc {
-       void *main_thread;
+       int can_do_threads;
        int threaded;
        int secure;
-       size_t *auxv;
-       int (*atexit)(void (*)(void));
-       void (*fini)(void);
-       void (*ldso_fini)(void);
        volatile int threads_minus_1;
-       int canceldisable;
+       size_t *auxv;
        FILE *ofl_head;
-       int ofl_lock;
+       volatile int ofl_lock[2];
+       size_t tls_size;
+       size_t page_size;
+       struct __locale_struct global_locale;
 };
 
-
-#if !defined(__PIC__) || 100*__GNUC__+__GNUC_MINOR__ >= 303 || defined(__PCC__) || defined(__TINYC__)
+#ifndef PAGE_SIZE
+#define PAGE_SIZE libc.page_size
+#endif
 
 #ifdef __PIC__
-#if __GNUC__ < 4
-#define BROKEN_VISIBILITY 1
-#endif
-#define ATTR_LIBC_VISIBILITY __attribute__((visibility("hidden"))) 
+#define ATTR_LIBC_VISIBILITY __attribute__((visibility("hidden")))
 #else
 #define ATTR_LIBC_VISIBILITY
 #endif
@@ -33,37 +39,29 @@ struct __libc {
 extern struct __libc __libc ATTR_LIBC_VISIBILITY;
 #define libc __libc
 
-#else
-
-#define USE_LIBC_ACCESSOR
-#define ATTR_LIBC_VISIBILITY
-extern struct __libc *__libc_loc(void) __attribute__((const));
-#define libc (*__libc_loc())
-
-#endif
-
+extern size_t __hwcap ATTR_LIBC_VISIBILITY;
+extern size_t __sysinfo ATTR_LIBC_VISIBILITY;
+extern char *__progname, *__progname_full;
 
 /* Designed to avoid any overhead in non-threaded processes */
-void __lock(volatile int *);
-int __lockfile(FILE *);
-void __unlockfile(FILE *);
-#define LOCK(x) (libc.threads_minus_1 ? (__lock(x),1) : ((void)(x),1))
-#define UNLOCK(x) (*(volatile int *)(x)=0)
+void __lock(volatile int *) ATTR_LIBC_VISIBILITY;
+void __unlock(volatile int *) ATTR_LIBC_VISIBILITY;
+int __lockfile(FILE *) ATTR_LIBC_VISIBILITY;
+void __unlockfile(FILE *) ATTR_LIBC_VISIBILITY;
+#define LOCK(x) __lock(x)
+#define UNLOCK(x) __unlock(x)
 
 void __synccall(void (*)(void *), void *);
-void __synccall_wait(void);
 int __setxid(int, int, int, int);
 
 extern char **__environ;
-#define environ __environ
 
 #undef weak_alias
 #define weak_alias(old, new) \
        extern __typeof(old) new __attribute__((weak, alias(#old)))
 
 #undef LFS64_2
-//#define LFS64_2(x, y) weak_alias(x, y)
-#define LFS64_2(x, y) extern __typeof(x) y
+#define LFS64_2(x, y) weak_alias(x, y)
 
 #undef LFS64
 #define LFS64(x) LFS64_2(x, x##64)