39 lines
931 B
Plaintext
39 lines
931 B
Plaintext
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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# Local configure fragment for sysdeps/powerpc32/elf.
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if test "$usetls" != no; then
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# Check for support of thread-local storage handling in assembler and
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# linker.
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AC_CACHE_CHECK(for powerpc32 TLS support, libc_cv_powerpc32_tls, [dnl
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cat > conftest.s <<\EOF
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.section ".tdata","awT",@progbits
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x: .long 1
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x1: .long 1
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x2: .long 1
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.text
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addi 3,31,x@got@tlsgd
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addi 3,31,x1@got@tlsld
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addi 9,3,x1@dtprel
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addis 9,3,x2@dtprel@ha
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addi 9,9,x2@dtprel@l
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lwz 0,x1@dtprel(3)
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addis 9,3,x2@dtprel@ha
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lwz 0,x2@dtprel@l(9)
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lwz 9,x3@got@tprel(31)
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add 9,9,x@tls
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addi 9,2,x1@tprel
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addis 9,2,x2@tprel@ha
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addi 9,9,x2@tprel@l
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EOF
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dnl
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if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
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libc_cv_powerpc32_tls=yes
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else
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libc_cv_powerpc32_tls=no
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fi
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rm -f conftest*])
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if test $libc_cv_powerpc32_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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