Intel® C++ Compiler 19.0 Developer Guide and Reference
Write the value to the GS base register. Both intrinsics are mapped to WRGSBASE instruction.
_writegsbase_u32(int 32 val) |
extern void _writegsbase_u64(unsigned __int64 val); |
the value to be written to the GS base register
These intrinsics write the given value to the GS segment base register.