source: trunk/libs/newlib/src/libgloss/cr16/_getenv.c @ 668

Last change on this file since 668 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

File size: 1012 bytes
Line 
1/* _getenv.c -- Implementation of the low-level _getenv() routine
2 *
3 * Copyright (c) 2004 National Semiconductor Corporation
4 *
5 * The authors hereby grant permission to use, copy, modify, distribute,
6 * and license this software and its documentation for any purpose, provided
7 * that existing copyright notices are retained in all copies and that this
8 * notice is included verbatim in any distributions. No written agreement,
9 * license, or royalty fee is required for any of the authorized uses.
10 * Modifications to this software may be copyrighted by their authors
11 * and need not follow the licensing terms described here, provided that
12 * the new terms are clearly indicated on the first page of each file where
13 * they apply.
14 */
15
16#include <sys/syscall.h>
17#include <stdlib.h>
18
19register char *R2 __asm__("r2");
20register char *R3 __asm__("r3");
21
22char * _getenv (const char *name)
23{
24  char *x;
25  char *y;
26
27  x  = R2;
28
29  y  = (char *) calloc (256, 1);
30  R3 = y;
31
32  R2 = x;
33 
34  HOST_SERVICE (SVC_GETENV);
35}
36
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