The xpseudo_asm.h includes xreg_cortexr5.h and xpseudo_asm_gcc.h.
The xreg_cortexr5.h file contains definitions for inline assembler code. It provides inline definitions for Cortex R5 GPRs, SPRs,co-processor registers and Debug register
The xpseudo_asm_gcc.h contains the definitions for the most often used inline assembler instructions, available as macros. These can be very useful for tasks such as setting or getting special purpose registers, synchronization,or cache manipulation. These inline assembler instructions can be used from drivers and user applications written in C.