CMSIS-Core (Cortex-A): CPSR M field values

| CMSIS-Core (Cortex-A) Version 1.2.0 CMSIS-Core support for Cortex-A processor-based devices

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CPSR M field values
Current Program Status Register (CPSR)

Valid values for CPSR M field. More...

## Macros

#define | CPSR_M_USR 0x10U
| CPSR: M User mode (PL0) More...
#define | CPSR_M_FIQ 0x11U
| CPSR: M Fast Interrupt mode (PL1) More...
#define | CPSR_M_IRQ 0x12U
| CPSR: M Interrupt mode (PL1) More...
#define | CPSR_M_SVC 0x13U
| CPSR: M Supervisor mode (PL1) More...
#define | CPSR_M_MON 0x16U
| CPSR: M Monitor mode (PL1) More...
#define | CPSR_M_ABT 0x17U
| CPSR: M Abort mode (PL1) More...
#define | CPSR_M_HYP 0x1AU
| CPSR: M Hypervisor mode (PL2) More...
#define | CPSR_M_UND 0x1BU
| CPSR: M Undefined mode (PL1) More...
#define | CPSR_M_SYS 0x1FU
| CPSR: M System mode (PL1) More...

## Description

The M field can contain one of these values which indicates the current processor mode.

## Macro Definition Documentation

#define CPSR_M_ABT 0x17U

Abort mode is the default mode to which a Data Abort exception or Prefetch Abort exception is taken.

#define CPSR_M_FIQ 0x11U

FIQ mode is the default mode to which an FIQ interrupt is taken.

#define CPSR_M_HYP 0x1AU

Hyp mode is the Non-secure PL2 mode, implemented as part of the Virtualization Extensions. Hyp mode is entered on taking an exception from Non-secure state that must be taken to PL2.

#define CPSR_M_IRQ 0x12U

IRQ mode is the default mode to which an IRQ interrupt is taken.

#define CPSR_M_MON 0x16U

Monitor mode is the mode to which a Secure Monitor Call exception is taken.

#define CPSR_M_SVC 0x13U

Supervisor mode is the default mode to which a Supervisor Call exception is taken.

#define CPSR_M_SYS 0x1FU

Software executing in System mode executes at PL1. System mode has the same registers available as User mode, and is not entered by any exception.

#define CPSR_M_UND 0x1BU

Undefined mode is the default mode to which an instruction-related exception, including any attempt to execute an UNDEFINED instruction, is taken.

#define CPSR_M_USR 0x10U

An operating system runs applications in User mode to restrict the use of system resources. Software executing in User mode executes at PL0. Execution in User mode is sometimes described as unprivileged execution.