You can use the predefined symbols ‘r0’ through ‘r63’ to refer
to the SH64 general registers, ‘cr0’ through cr63 for
control registers, ‘tr0’ through ‘tr7’ for target address
registers, ‘fr0’ through ‘fr63’ for single-precision floating
point registers, ‘dr0’ through ‘dr62’ (even numbered registers
only) for double-precision floating point registers, ‘fv0’ through
‘fv60’ (multiples of four only) for single-precision floating point
vectors, ‘fp0’ through ‘fp62’ (even numbered registers only)
for single-precision floating point pairs, ‘mtrx0’ through
‘mtrx48’ (multiples of 16 only) for 4x4 matrices of
single-precision floating point registers, ‘pc’ for the program
counter, and ‘fpscr’ for the floating point status and control
register.
You can also refer to the control registers by the mnemonics ‘sr’, ‘ssr’, ‘pssr’, ‘intevt’, ‘expevt’, ‘pexpevt’, ‘tra’, ‘spc’, ‘pspc’, ‘resvec’, ‘vbr’, ‘tea’, ‘dcr’, ‘kcr0’, ‘kcr1’, ‘ctc’, and ‘usr’.