These built-in functions are available for the AArch64 family of processors.
unsigned int __builtin_aarch64_get_fpcr () void __builtin_aarch64_set_fpcr (unsigned int) unsigned int __builtin_aarch64_get_fpsr () void __builtin_aarch64_set_fpsr (unsigned int) unsigned long long __builtin_aarch64_get_fpcr64 () void __builtin_aarch64_set_fpcr64 (unsigned long long) unsigned long long __builtin_aarch64_get_fpsr64 () void __builtin_aarch64_set_fpsr64 (unsigned long long)
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Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-11.1.0/gcc/AArch64-Built_002din-Functions.html