diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/sparc/sparc64/elf/configure.in | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc64/elf/configure.in b/sysdeps/sparc/sparc64/elf/configure.in new file mode 100644 index 0000000000..a2657aed5e --- /dev/null +++ b/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 |