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authorRoland McGrath <roland@gnu.org>2002-06-04 19:03:41 +0000
committerRoland McGrath <roland@gnu.org>2002-06-04 19:03:41 +0000
commit17d7201a97152b459fad11291de16cf0e6485cfa (patch)
treefa233dc2e1d669d08dea836cbdbc46806fb83609 /sysdeps/alpha
parentc35f13200270b95469d4a54fd7e30016de4562e5 (diff)
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* sysdeps/alpha/elf/configure.in: New file. Check for TLS support.
* sysdeps/alpha/elf/configure: New file (generated).
Diffstat (limited to 'sysdeps/alpha')
-rw-r--r--sysdeps/alpha/elf/configure.in53
1 files changed, 53 insertions, 0 deletions
diff --git a/sysdeps/alpha/elf/configure.in b/sysdeps/alpha/elf/configure.in
new file mode 100644
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