| GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. |
| # Local configure fragment for sysdeps/sparc/sparc64/elf. |
| |
| if test "$usetls" != no; then |
| # Check for support of thread-local storage handling in assembler and linker. |
| AC_CACHE_CHECK(for sparc64 TLS support, libc_cv_sparc64_tls, [dnl |
| changequote(,)dnl |
| cat > conftest.s <<\EOF |
| .section ".tdata", "awT", @progbits |
| .globl foo |
| foo: .word 1 |
| .section ".tbss", "awT", @nobits |
| .globl bar |
| bar: .skip 4 |
| .text |
| .globl main |
| main: sethi %tgd_hi22(foo), %l1 |
| add %l1, %tgd_lo10(foo), %l1 |
| add %l7, %l1, %o0, %tgd_add(foo) |
| call __tls_get_addr, %tgd_call(foo) |
| sethi %tldm_hi22(bar), %l1 |
| add %l1, %tldm_lo10(bar), %l1 |
| add %l7, %l1, %o0, %tldm_add(bar) |
| call __tls_get_addr, %tldm_call(bar) |
| sethi %tldo_hix22(bar), %l1 |
| xor %l1, %tldo_lox10(bar), %l1 |
| add %o0, %l1, %l1, %tldo_add(bar) |
| sethi %tie_hi22(foo), %l1 |
| add %l1, %tie_lo10(foo), %l1 |
| ldx [%l7 + %l1], %l1, %tie_ldx(foo) |
| add %g7, %l1, %l1, %tie_add(foo) |
| sethi %tle_hix22(foo), %l1 |
| xor %l1, %tle_lox10(foo), %l1 |
| EOF |
| changequote([,])dnl |
| dnl |
| if AC_TRY_COMMAND(${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 |
