Additional configury for SPARC64/ELF.

sysdeps/sparc/sparc64/elf/configure.in

@@ -0,0 +1,61 @@
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/sparc/sparc64/elf.
+
+if test "$usetls" != no; then
+# Check for support of thread-local storage handling in assembler and linker.
+AC_CACHE_CHECK(for sparc64 TLS support, libc_cv_sparc64_tls, [dnl
+cat > conftest.s <<\EOF
+	.section ".tdata", "awT", @progbits
+	.globl foo
+foo:	.word	1
+	.section ".tbss", "awT", @nobits
+	.globl bar
+bar:	.skip	4
+	.text
+	.globl main
+main:	sethi	%tgd_hi22(foo), %l1
+	add	%l1, %tgd_lo10(foo), %l1
+	add	%l7, %l1, %o0, %tgd_add(foo)
+	call	__tls_get_addr, %tgd_call(foo)
+	sethi	%tldm_hi22(bar), %l1
+	add	%l1, %tldm_lo10(bar), %l1
+	add	%l7, %l1, %o0, %tldm_add(bar)
+	call	__tls_get_addr, %tldm_call(bar)
+	sethi	%tldo_hix22(bar), %l1
+	xor	%l1, %tldo_lox10(bar), %l1
+	add	%o0, %l1, %l1, %tldo_add(bar)
+	sethi	%tie_hi22(foo), %l1
+	add	%l1, %tie_lo10(foo), %l1
+	ldx	[%l7 + %l1], %l1, %tie_ldx(foo)
+	add	%g7, %l1, %l1, %tie_add(foo)
+	sethi	%tle_hix22(foo), %l1
+	xor	%l1, %tle_lox10(foo), %l1
+EOF
+dnl
+if AC_TRY_COMMAND(${CC-cc} -o conftest.bin $CFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
+  libc_cv_sparc64_tls=yes
+else
+  libc_cv_sparc64_tls=no
+fi
+rm -f conftest*])
+if test $libc_cv_sparc64_tls = yes; then
+  AC_DEFINE(HAVE_TLS_SUPPORT)
+fi
+fi
+
+# Check for broken WDISP22 in the linker.
+AC_CACHE_CHECK(for sparc64 ld WDISP22 handling, libc_cv_sparc64_wdisp22, [dnl
+echo 'bne foo; nop' > conftest1.s
+echo '.globl foo; .hidden foo; foo: nop' > conftest2.s
+libc_cv_sparc64_wdisp22=unknown
+if AC_TRY_COMMAND(${CC-cc} -nostdlib -shared $CFLAGS conftest1.s conftest2.s -o conftest.so 1>&AS_MESSAGE_LOG_FD); then
+  if readelf -r conftest.so | grep -q R_SPARC_WDISP22; then
+    libc_cv_sparc64_wdisp22=broken
+  else
+    libc_cv_sparc64_wdisp22=ok
+  fi
+fi
+rm -f conftest*])
+if test $libc_cv_sparc64_wdisp22 != ok; then
+  AC_DEFINE(BROKEN_SPARC_WDISP22)
+fi