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56b223c1c8
__CSKY_HARD_FLOAT_ABI__ was added on gcc 11 to specify whether -mfloat-abi=hard is set. On older gcc, the float ABI is defined solely with __CSKY_HARD_FLOAT__. If __CSKY_HARD_FLOAT__ is set, it can be either a hard-float ABI (gcc older than 11, or gcc11 -mfloat-abi=hard (__CSKY_HARD_FLOAT_ABI__ is set) or -mfloat-abi=softfp (__CSKY_HARD_FLOAT_ABI__ is not set). To be compatible with older gcc, use __CSKY_HARD_FLOAT_FPU_SF__ identify if -mfloat-abi is supported, because it is added to gcc at the same time as -mfloat-abi. Reviewed-by: Mao Han <han_mao@linux.alibaba.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
55 lines
1.7 KiB
Plaintext
55 lines
1.7 KiB
Plaintext
case "$machine" in
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csky*)
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abi=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
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sed -n 's/^#define __CSKYABI__ \(.*\)/\1/p'`
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hard_float=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
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sed -n 's/^#define __CSKY_HARD_FLOAT__ \(.*\)/\1/p'`
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hard_float_sf=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
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sed -n 's/^#define __CSKY_HARD_FLOAT_FPU_SF__ \(.*\)/\1/p'`
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hard_float_abi=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
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sed -n 's/^#define __CSKY_HARD_FLOAT_ABI__ \(.*\)/\1/p'`
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case "$abi" in
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1)
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echo "glibc does not support abiv1 yet" >&2
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exit 1
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;;
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2)
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machine=abiv2
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;;
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*)
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echo "Unknown abi" >&2
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exit 1
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;;
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esac
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# __CSKY_HARD_FLOAT_ABI__ was added on gcc 11 to specify whether
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# -mfloat-abi=hard is set. On older gcc, the float ABI is defined solely
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# with __CSKY_HARD_FLOAT__. If __CSKY_HARD_FLOAT__ is set, it can be
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# either a hard-float ABI (gcc older than 11, or gcc11 -mfloat-abi=hard
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# (__CSKY_HARD_FLOAT_ABI__ is set) or -mfloat-abi=softfp
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# (__CSKY_HARD_FLOAT_ABI__ is not set). To be compatible with older gcc,
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# use __CSKY_HARD_FLOAT_FPU_SF__ identify if -mfloat-abi is supported,
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# because it is added to gcc at the same time as -mfloat-abi.
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if test -n "$hard_float"; then
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if test -z "$hard_float_sf"; then
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with_fp_cond=1
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else
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if test -n "$hard_float_abi"; then
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with_fp_cond=1
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else
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with_fp_cond=0
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fi
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fi
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else
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with_fp_cond=0
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fi
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base_machine=csky
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machine=csky/$machine
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$as_echo "#define CSKYABI $abi" >>confdefs.h
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$as_echo "#define CSKY_HARD_FLOAT $with_fp_cond" >>confdefs.h
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;;
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esac
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