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59 lines
1.5 KiB
Plaintext
59 lines
1.5 KiB
Plaintext
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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/powerpc64/elf.
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if test "$usetls" != no; then
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# Check for support of thread-local storage handling in assembler and
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# linker.
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AC_CACHE_CHECK(for powerpc64 TLS support, libc_cv_powerpc64_tls, [dnl
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cat > conftest.s <<\EOF
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.section ".tdata","awT",@progbits
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x: .quad 1
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x1: .quad 1
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x2: .quad 1
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x3: .quad 1
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x4: .long 1
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.section ".toc","aw"
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.LC0:
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.quad x@dtpmod
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.quad x@dtprel
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.LC1:
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.quad x1@dtpmod
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.quad 0
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.LC2:
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.quad x@tprel
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.text
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addi 3,2,x@got@tlsgd
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addi 3,2,.LC0@toc
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addi 3,2,x1@got@tlsld
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addi 9,3,x1@dtprel
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addis 9,3,x2@dtprel@ha
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addi 9,9,x2@dtprel@l
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ld 9,x3@got@dtprel(2)
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addi 3,2,.LC0@toc
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lwz 0,x1@dtprel(3)
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ld 0,x1@dtprel(3)
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addis 9,3,x2@dtprel@ha
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lwz 0,x2@dtprel@l(9)
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ld 0,x2@dtprel@l(9)
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ld 9,x3@got@dtprel(2)
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ld 9,x@got@tprel(2)
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add 9,9,x@tls
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ld 9,.LC2@toc(2)
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add 9,9,.LC2@tls
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addi 9,13,x1@tprel
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addis 9,13,x2@tprel@ha
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addi 9,9,x2@tprel@l
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EOF
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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_powerpc64_tls=yes
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else
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libc_cv_powerpc64_tls=no
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fi
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rm -f conftest*])
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if test $libc_cv_powerpc64_tls = yes; then
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AC_DEFINE(HAVE_TLS_SUPPORT)
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fi
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fi
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