alpha: Add tls-macros.h.

diff --git a/ChangeLog.alpha b/ChangeLog.alpha
index 8ade582..804dd64 100644 (file)
--- a/ChangeLog.alpha
+++ b/ChangeLog.alpha
@@ -1,5 +1,7 @@
 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.

diff --git a/sysdeps/alpha/tls-macros.h b/sysdeps/alpha/tls-macros.h
new file mode 100644 (file)
index 0000000..0385d93
--- /dev/null
+++ b/sysdeps/alpha/tls-macros.h
@@ -0,0 +1,25 @@
+/* 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; })