2012-03-14 23:29:47 +00:00
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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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# Local configure fragment for sysdeps/sparc.
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# Check for support of VIS3 et al. instructions in the assembler.
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AC_CACHE_CHECK(for sparc assembler VIS3 support, libc_cv_sparc_as_vis3, [dnl
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cat > conftest.S <<\EOF
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.text
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foo: fmadds %f1, %f2, %f3, %f5
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fmaddd %f2, %f4, %f8, %f10
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fhadds %f2, %f3, %f5
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fhaddd %f4, %f8, %f10
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pdistn %f2, %f4, %g1
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movdtox %f10, %o0
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movstouw %f9, %o1
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movstosw %f7, %o2
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movxtod %o3, %f18
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movwtos %o4, %f15
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flcmps %fcc0, %f3, %f5
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flcmpd %fcc1, %f4, %f6
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EOF
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dnl
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if AC_TRY_COMMAND([${CC-cc} -c $CFLAGS -Wa,-Av9d conftest.S]); then
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libc_cv_sparc_as_vis3=yes
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else
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libc_cv_sparc_as_vis3=no
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fi
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rm -f conftest*])
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if test $libc_cv_sparc_as_vis3 = yes; then
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AC_DEFINE(HAVE_AS_VIS3_SUPPORT)
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fi
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2012-03-23 16:37:30 +00:00
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# Check for support of thread-local storage handling in assembler and linker.
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AC_CACHE_CHECK(for sparc TLS support, libc_cv_sparc_tls, [dnl
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changequote(,)dnl
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cat > conftest.S <<\EOF
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.section ".tdata", "awT", @progbits
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.globl foo
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foo: .word 1
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.section ".tbss", "awT", @nobits
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.globl bar
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bar: .skip 4
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.text
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baz: sethi %tgd_hi22(foo), %l1
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add %l1, %tgd_lo10(foo), %l1
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add %l7, %l1, %o0, %tgd_add(foo)
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call __tls_get_addr, %tgd_call(foo)
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sethi %tldm_hi22(bar), %l1
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add %l1, %tldm_lo10(bar), %l1
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add %l7, %l1, %o0, %tldm_add(bar)
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call __tls_get_addr, %tldm_call(bar)
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sethi %tldo_hix22(bar), %l1
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xor %l1, %tldo_lox10(bar), %l1
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add %o0, %l1, %l1, %tldo_add(bar)
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sethi %tie_hi22(foo), %l1
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add %l1, %tie_lo10(foo), %l1
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#ifdef __arch64__
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ldx [%l7 + %l1], %l1, %tie_ldx(foo)
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#else
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ld [%l7 + %l1], %l1, %tie_ld(foo)
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#endif
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add %g7, %l1, %l1, %tie_add(foo)
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sethi %tle_hix22(foo), %l1
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xor %l1, %tle_lox10(foo), %l1
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EOF
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changequote([,])dnl
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dnl
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if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.S 1>&AS_MESSAGE_LOG_FD); then
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libc_cv_sparc_tls=yes
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else
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libc_cv_sparc_tls=no
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fi
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rm -f conftest*])
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if test $libc_cv_sparc_tls = no; then
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AC_MSG_ERROR([the assembler must support TLS])
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fi
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# Check for a GCC emitting GOTDATA relocations.
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AC_CACHE_CHECK(for sparc gcc GOTDATA reloc support, libc_cv_sparc_gcc_gotdata, [dnl
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changequote(,)dnl
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cat > conftest.c <<\EOF
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int data;
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int foo(void)
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{
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return data;
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}
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EOF
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changequote([,])dnl
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dnl
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libc_cv_sparc_gcc_gotdata=no
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if AC_TRY_COMMAND(${CC-cc} -S $CFLAGS -O2 -fPIC conftest.c 1>&AS_MESSAGE_LOG_FD); then
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if grep -q 'gdop_hix22' conftest.s \
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&& grep -q 'gdop_lox10' conftest.s; then
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libc_cv_sparc_gcc_gotdata=yes
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fi
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fi
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rm -f conftest*])
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if test $libc_cv_sparc_gcc_gotdata = yes; then
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AC_DEFINE(HAVE_GCC_GOTDATA)
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fi
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if test $libc_cv_sparc_gcc_gotdata = yes; then
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AC_DEFINE(PI_STATIC_AND_HIDDEN)
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fi
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