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author | quxm <xianmiao.qxm@alibaba-inc.com> | 2023-01-25 17:47:33 +0800 |
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committer | Mao Han <han_mao@linux.alibaba.com> | 2023-02-07 16:34:24 +0800 |
commit | ec6d2b83f254606fc2e646595782a70b301a2524 (patch) | |
tree | 1db32c468ba0ca1b387f30140aac6266f8ad46c6 /soft-fp/testit.c | |
parent | 41f67ccbe92b4fd09e1062b383e55e407ae5bfa1 (diff) | |
download | glibc-ec6d2b83f254606fc2e646595782a70b301a2524.tar.gz glibc-ec6d2b83f254606fc2e646595782a70b301a2524.tar.xz glibc-ec6d2b83f254606fc2e646595782a70b301a2524.zip |
C-SKY: Strip hard float abi from hard float feature.
The hard float abi and hard float are different, Hard float abi: Use float register to pass float type arguments. Hard float: Enable the hard float ISA feature. So the with_fp_cond cannot represent these two features. When -mfloat-abi=softfp, the float abi is soft and hard float is enabled. So add 'with_hard_float_abi' in preconfigure and define 'CSKY_HARD_FLOAT_ABI' if float abi is hard, and use 'CSKY_HARD_FLOAT_ABI' to determine dynamic linker because it is what determines compatibility. And with_fp_cond is still needed to tell glibc whether to enable hard floating feature. In addition, use AC_TRY_COMMAND to test gcc to ensure compatibility between different versions of gcc. The original way has a problem that __CSKY_HARD_FLOAT_FPU_SF__ means the target only has single hard float-points ISA, so it's not defined in CPUs like ck810f. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'soft-fp/testit.c')
0 files changed, 0 insertions, 0 deletions