From 17d7201a97152b459fad11291de16cf0e6485cfa Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@gnu.org>
Date: Tue, 4 Jun 2002 19:03:41 +0000
Subject: * sysdeps/alpha/elf/configure.in: New file.  Check for TLS support.

	* sysdeps/alpha/elf/configure: New file (generated).
---
 sysdeps/alpha/elf/configure.in | 53 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 sysdeps/alpha/elf/configure.in

(limited to 'sysdeps')

diff --git a/sysdeps/alpha/elf/configure.in b/sysdeps/alpha/elf/configure.in
new file mode 100644
index 0000000000..7548046f50
--- /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
-- 
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