aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/sparc/sparc64/elf/configure.in
blob: 959c6283c1345a4f4d3a3081c7346f9d90553bba (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/sparc/sparc64/elf.

# Check for support of thread-local storage handling in assembler and linker.
AC_CACHE_CHECK(for sparc64 TLS support, libc_cv_sparc64_tls, [dnl
changequote(,)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 _start
_start:	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
changequote([,])dnl
dnl
if AC_TRY_COMMAND(${CC-cc} -o conftest.bin $CFLAGS $LDFLAGS conftest.s -nostdlib -nostartfiles 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 = no; then
  AC_MSG_ERROR([the assembler must support TLS])
fi