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_WRITEC (0x03)

RealView^® Compilation Tools for μVision Compiler User Guide

Version 3.1

Home > Semihosting > Semihosting operations > SYS_WRITEC (0x03)

A.3.23. `SYS_WRITEC (0x03)`

Writes a character byte, pointed to by r1, to the debug channel. When executed under an ARM debugger, the character appears on the host debugger console.

Entry

On entry, r1 contains a pointer to the character.

Return

None. Register r0 is corrupted.

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