* sysdeps/alpha/elf/configure.in: New file. Check for TLS support.

	* sysdeps/alpha/elf/configure: New file (generated).

diff --git a/ChangeLog b/ChangeLog
index b832013..e63d7a3 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2002-06-04  Roland McGrath  <roland@frob.com>
+
+       * sysdeps/alpha/elf/configure.in: New file.  Check for TLS support.
+       * sysdeps/alpha/elf/configure: New file (generated).
+
 2002-06-02  Roland McGrath  <roland@frob.com>
 
        * include/link.h: Include <tls.h> to make sure USE_TLS is defined.

diff --git a/sysdeps/alpha/elf/configure.in b/sysdeps/alpha/elf/configure.in
new file mode 100644 (file)
index 0000000..7548046
--- /dev/null
+++ b/sysdeps/alpha/elf/configure.in
@@ -0,0 +1,53 @@
+sinclude(./aclocal.m4)dnl Autoconf lossage
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/alpha/elf.
+
+if test "$usetls" != no; then
+# Check for support of thread-local storage handling in assembler and
+# linker.
+AC_CACHE_CHECK(for Alpha TLS support, libc_cv_alpha_tls, [dnl
+cat > conftest.s <<\EOF
+       .section ".tdata", "awT", @progbits
+       .globl foo
+foo:   .quad   1
+       .section ".tbss", "awT", @nobits
+       .globl bar
+bar:   .skip   8
+       .text
+baz:
+       .set nomacro
+       ldq     $27, __tls_get_addr($29)        !literal!1
+       ldq     $16, a($29)                     !tlsgd!1
+       jsr     $26, ($27), __tls_get_addr      !lituse_tlsgd!1
+
+       jsr     $26, ($27), __tls_get_addr      !lituse_tlsldm!2
+       ldq     $27, __tls_get_addr($29)        !literal!2
+       ldq     $16, b($29)                     !tlsldm!2
+
+       ldq     $16, c($29)                     !tlsgd
+       ldq     $16, d($29)                     !tlsldm
+
+       ldq     $16, e($29)                     !tlsgd!3
+       ldq     $16, f($29)                     !tlsldm!4
+
+       ldq     $16, g($29)                     !gotdtprel
+       ldah    $16, h($31)                     !dtprelhi
+       lda     $16, i($16)                     !dtprello
+       lda     $16, j($31)                     !dtprel
+
+       ldq     $16, k($29)                     !gottprel
+       ldah    $16, l($31)                     !tprelhi
+       lda     $16, m($16)                     !tprello
+       lda     $16, n($31)                     !tprel
+EOF
+dnl
+if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
+  libc_cv_alpha_tls=yes
+else
+  libc_cv_alpha_tls=no
+fi
+rm -f conftest*])
+if test $libc_cv_alpha_tls = yes; then
+  AC_DEFINE(HAVE_TLS_SUPPORT)
+fi
+fi