diff options
Diffstat (limited to 'libc/private/bionic_tls.h')
| -rw-r--r-- | libc/private/bionic_tls.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/libc/private/bionic_tls.h b/libc/private/bionic_tls.h index da34344..742ef8c 100644 --- a/libc/private/bionic_tls.h +++ b/libc/private/bionic_tls.h @@ -60,6 +60,13 @@ __BEGIN_DECLS #define TLS_SLOT_OPENGL_API 3 #define TLS_SLOT_OPENGL 4 +/* this slot is only used to pass information from the dynamic linker to + * libc.so when the C library is loaded in to memory. The C runtime init + * function will then clear it. Since its use is extremely temporary, + * we reuse an existing location. + */ +#define TLS_SLOT_BIONIC_PREINIT (TLS_SLOT_ERRNO+1) + /* small technical note: it is not possible to call pthread_setspecific * on keys that are <= TLS_SLOT_MAX_WELL_KNOWN, which is why it is set to * TLS_SLOT_ERRNO. @@ -80,8 +87,10 @@ extern void __init_tls(void** tls, void* thread_info); extern int __set_tls(void *ptr); /* get the TLS */ +/* Linux kernel helpers for its TLS implementation */ #ifdef __arm__ -# define __get_tls() ( *((volatile void **) 0xffff0ff0) ) +typedef void* (__kernel_get_tls_t)(void); +#define __get_tls (*(__kernel_get_tls_t *)0xffff0fe0) #else extern void* __get_tls( void ); #endif |