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dnl
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dnl
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dnl $Id: i386-gas-code16.m4,v 1.2 2001-09-27 11:59:11 chris Exp $
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dnl $Id: i386-gas-code16.m4,v 1.2 2001-09-27 11:59:11 chris Exp $
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dnl
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dnl
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dnl check for i386 gas supporting 16 bit mode
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dnl check for i386 gas supporting 16 bit mode
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dnl - binutils 2.9.1.0.7 and higher
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dnl - binutils 2.9.1.0.7 and higher
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AC_DEFUN(RTEMS_I386_GAS_CODE16,
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AC_DEFUN(RTEMS_I386_GAS_CODE16,
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[ if test "${target_cpu}" = "i386"; then
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[ if test "${target_cpu}" = "i386"; then
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AC_CACHE_CHECK([for 16 bit mode assembler support],
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AC_CACHE_CHECK([for 16 bit mode assembler support],
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rtems_cv_prog_gas_code16,
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rtems_cv_prog_gas_code16,
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[cat > conftest.s << EOF
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[cat > conftest.s << EOF
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.code16
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.code16
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data32
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data32
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addr32
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addr32
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lgdt 0
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lgdt 0
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EOF
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EOF
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if AC_TRY_COMMAND($AS_FOR_TARGET -o conftest.o conftest.s); then
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if AC_TRY_COMMAND($AS_FOR_TARGET -o conftest.o conftest.s); then
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rtems_cv_prog_gas_code16=yes
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rtems_cv_prog_gas_code16=yes
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else
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else
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rtems_cv_prog_gas_code16=no
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rtems_cv_prog_gas_code16=no
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fi])
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fi])
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RTEMS_GAS_CODE16="$rtems_cv_prog_gas_code16"
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RTEMS_GAS_CODE16="$rtems_cv_prog_gas_code16"
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fi
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fi
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AC_SUBST(RTEMS_GAS_CODE16)
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AC_SUBST(RTEMS_GAS_CODE16)
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])
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])
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