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9.40.2.2 Register Names

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’.