2012-02-08 Richard Henderson <rth@twiddle.net>
+ * sysdeps/alpha/tls-macros.h: New file.
+
* sysdeps/unix/sysv/linux/alpha/getitimer.S: Don't check HAVE_ELF.
* sysdeps/unix/sysv/linux/alpha/getrusage.S: Likewise.
* sysdeps/unix/sysv/linux/alpha/gettimeofday.S: Likewise.
--- /dev/null
+/* Macros to support TLS testing in times of missing compiler support. */
+
+extern void *__tls_get_addr (void *);
+
+# define TLS_GD(x) \
+ ({ void *__result; \
+ asm ("lda %0, " #x "($gp) !tlsgd" : "=r" (__result)); \
+ __tls_get_addr (__result); })
+
+# define TLS_LD(x) \
+ ({ void *__result; \
+ asm ("lda %0, " #x "($gp) !tlsldm" : "=r" (__result)); \
+ __result = __tls_get_addr (__result); \
+ asm ("lda %0, " #x "(%0) !dtprel" : "+r" (__result)); \
+ __result; })
+
+# define TLS_IE(x) \
+ ({ long ofs; \
+ asm ("ldq %0, " #x "($gp) !gottprel" : "=r"(ofs)); \
+ __builtin_thread_pointer () + ofs; })
+
+# define TLS_LE(x) \
+ ({ void *__result = __builtin_thread_pointer (); \
+ asm ("lda %0, " #x "(%0) !tprel" : "+r" (__result)); \
+ __result; })