##### 9.28.2.2 Register Names

You can use the predefined symbols ``r0`', ``r1`', ``r2`', ``r3`', ``r4`', ``r5`', ``r6`', ``r7`', ``r8`', ``r9`', ``r10`', ``r11`', ``r12`', ``r13`', ``r14`', and ``r15`' to refer to the SH registers.

The SH also has these control registers:

`pr`
  procedure register (holds return address)
`pc`
  program counter
`mach`
`macl`
  high and low multiply accumulator registers
`sr`
  status register
`gbr`
  global base register
`vbr`
  vector base register (for interrupt vectors)