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_TMPNAM (0x0D)

RealView^® Compilation Tools for μVision Compiler User Guide

Version 3.1

Home > Semihosting > Semihosting operations > SYS_TMPNAM (0x0D)

A.3.21. `SYS_TMPNAM (0x0D)`

Returns a temporary name for a file identified by a system file identifier.

Entry

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

word 1: A pointer to a buffer.
word 2: A target identifier for this filename. Its value must be an integer in the range 0 to 255.
word 3: Contains the length of the buffer. The length must be at least the value of L_tmpnam on the host system.

Return

On exit, r0 contains:

0 if the call is successful
–1 if an error occurs.

The buffer pointed to by r1 contains the filename, prefixed with a suitable directory name.

If you use the same target identifier again, the same filename is returned.

Note

The returned string must be null‑terminated.

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