3 ms·
They are additional model specific registers, not instructions.
by als0 6y ago
They are additional model specific registers, not instructions.
- my123 6y agoThere are additional instructions too. However, they aren't documented and Apple's compilers do not include them at all. They can only be used in Accelerate.framework or in the kernel, which checks and is able to work without them.
- als0 6y agoCan you provide a source? Everywhere I've looked just shows MRS and MSR instructions, which are standard ARM instructions with platform specific operands/results. It can only be a custom instruction if the disassembly shows it's in the reserved instruction opcode space.