Skip to main content

IAR Embedded Workbench for RX 5.20

Register symbols

In this section:

This table shows the existing predefined register symbols:

Name

Size

Description

R1R15

32 bits

General purpose registers

SP/R0

32 bits

Register R0, the currently active SP

PSW

32 bits

Status register

PC

32 bits

Program counter

USP

32 bits

User mode stack pointer

ISP

32 bits

Supervisor mode stack pointer

FPSW

32 bits

Floating-point status register

BPSW

32 bits

Backup status register (fast interrupt)

BPC

32 bits

Backup program counter (fast interrupt)

FINTV

32 bits

The fast interrupt vector register

INTB

32 bits

The INTVEC maskable interrupt vector base register

Table 117. Predefined register symbols