X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Finternal%2Flibc.h;h=d6797f90e6ac5991179daaa30ba638ebf5070856;hp=d985902c6389a82403e04640341e620426808899;hb=f34d0ea511e552851c8c6148fb113816f41e6759;hpb=df0b5a49406763aa4719dfad561a5de8924ecd59

diff --git a/src/internal/libc.h b/src/internal/libc.h
index d985902c..d6797f90 100644
--- a/src/internal/libc.h
+++ b/src/internal/libc.h
@@ -19,16 +19,24 @@ struct __libc {
 };
 
 
-#if 100*__GNUC__+__GNUC_MINOR__ >= 303 || defined(__PCC__) || defined(__TINYC__)
-extern struct __libc __libc __attribute__((visibility("hidden")));
-#define libc __libc
+#if !defined(__PIC__) || 100*__GNUC__+__GNUC_MINOR__ >= 303 || defined(__PCC__) || defined(__TINYC__)
+
+#ifdef __PIC__
+#if __GNUC__ < 4
+#define BROKEN_VISIBILITY 1
+#endif
+#define ATTR_LIBC_VISIBILITY __attribute__((visibility("hidden"))) 
+#else
+#define ATTR_LIBC_VISIBILITY
+#endif
 
-#elif !defined(__PIC__)
-extern struct __libc __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())
 
@@ -37,10 +45,11 @@ extern struct __libc *__libc_loc(void) __attribute__((const));
 
 /* Designed to avoid any overhead in non-threaded processes */
 void __lock(volatile int *);
+void __unlock(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)
+#define UNLOCK(x) (libc.threads_minus_1 ? (__unlock(x),1) : ((void)(x),1))
 
 void __synccall(void (*)(void *), void *);
 void __synccall_wait(void);