RealView Compiler User's Guide
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RealView Compiler User's Guide

Getting started with the ARM Compiler

Compiler Features

Coding Practices

Diagnostic Messages

Using the Inline and Embedded Assemblers

About semihosting

What is semihosting?

The semihosting interface

Semihosting implementation

RealView ARMulator ISS

Instruction Set System Model

Semihosting operations

angel_SWIreason_EnterSVC (0x17)

angel_SWIreason_ReportException (0x18)

SYS_CLOSE (0x02)

SYS_CLOCK (0x10)

SYS_ELAPSED (0x30)

SYS_ERRNO (0x13)

SYS_FLEN (0x0C)

SYS_GET_CMDLINE (0x15)

SYS_HEAPINFO (0x16)

SYS_ISERROR (0x08)

SYS_ISTTY (0x09)

SYS_OPEN (0x01)

SYS_READ (0x06)

SYS_READC (0x07)

SYS_REMOVE (0x0E)

SYS_RENAME (0x0F)

SYS_SEEK (0x0A)

SYS_SYSTEM (0x12)

SYS_TICKFREQ (0x31)

SYS_TIME (0x11)

SYS_TMPNAM (0x0D)

SYS_WRITE (0x05)

SYS_WRITEC (0x03)

SYS_WRITE0 (0x04)

Debug agent interaction SVCs

SYS_ISTTY (0x09)

RealView^® Compilation Tools for μVision Compiler User Guide

Version 3.1

Home > Semihosting > Semihosting operations > SYS_ISTTY (0x09)

A.3.11. `SYS_ISTTY (0x09)`

Checks whether a file is connected to an interactive device.

Entry

On entry, r1 contains a pointer to a one‑word argument block:

word 1: A handle for a previously opened file object.

Return

On exit, r0 contains:

1 if the handle identifies an interactive device
0 if the handle identifies a file
a value other than 1 or 0 if an error occurs.

Copyright © 2007 ARM Limited. All rights reserved.	ARM DUI 0375A
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