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Chapter 35. Renesas / SuperH SH Dependent Features

35.2.2. 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)

35.2.3. Addressing Modes

as

understands the following addressing modes for the SH.

Rn

in the following refers to any of the

numbered registers, but not the control registers.

Rn

Register direct

@Rn

Register indirect

@ Rn

Register indirect with pre decrement

@Rn+

Register indirect with post increment

@(disp, Rn)

Register indirect with displacement

@(R0, Rn)

Register indexed

@(disp, GBR)

GBR

offset