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|
case "$machine" in
riscv*)
xlen=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __riscv_xlen \(.*\)/\1/p'`
flen=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __riscv_flen \(.*\)/\1/p'`
float_abi=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __riscv_float_abi_\([^ ]*\) .*/\1/p'`
atomic=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | grep '#define __riscv_atomic' | cut -d' ' -f2`
case "$xlen" in
32)
echo "glibc does not yet support 32-bit systems" >&2
exit 1
;;
64)
;;
*)
echo "Unable to determine XLEN" >&2
exit 1
;;
esac
case "$flen" in
64)
float_machine=rvd
with_fp_cond=1
;;
32)
echo "glibc does not yet support systems with the F but not D extensions" >&2
exit 1
;;
"")
with_fp_cond=0
;;
*)
echo "Unable to determine FLEN" >&2
exit 1
;;
esac
case "$float_abi" in
soft)
abi_flen=0
;;
single)
echo "glibc does not yet support the single floating-point ABI" >&2
exit 1
;;
double)
abi_flen=64
;;
*)
echo "Unable to determine floating-point ABI" >&2
exit 1
;;
esac
case "$atomic" in
__riscv_atomic)
;;
*)
echo "glibc requires the A extension" >&2
exit 1
;;
esac
base_machine=riscv
machine=riscv/rv$xlen/$float_machine
$as_echo "#define RISCV_ABI_XLEN $xlen" >>confdefs.h
$as_echo "#define RISCV_ABI_FLEN $abi_flen" >>confdefs.h
;;
esac
|
