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.