diff options
Diffstat (limited to 'sysdeps/sparc/elf/configure.in')
| -rw-r--r-- | sysdeps/sparc/elf/configure.in | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/sysdeps/sparc/elf/configure.in b/sysdeps/sparc/elf/configure.in new file mode 100644 index 0000000000..c22a7c5c58 --- /dev/null +++ b/sysdeps/sparc/elf/configure.in @@ -0,0 +1,47 @@ +GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. +# Local configure fragment for sysdeps/sparc/elf. + +# Check for support of thread-local storage handling in assembler and linker. +AC_CACHE_CHECK(for sparc TLS support, libc_cv_sparc_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 +baz: 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 +#ifdef __arch64__ + ldx [%l7 + %l1], %l1, %tie_ldx(foo) +#else + ld [%l7 + %l1], %l1, %tie_ld(foo) +#endif + 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} -c $CFLAGS conftest.S 1>&AS_MESSAGE_LOG_FD); then + libc_cv_sparc_tls=yes +else + libc_cv_sparc_tls=no +fi +rm -f conftest*]) +if test $libc_cv_sparc_tls = no; then + AC_MSG_ERROR([the assembler must support TLS]) +fi |