source: trunk/libs/newlib/src/newlib/libc/sys/a29khif/getenv.S @ 587

Last change on this file since 587 was 444, checked in by satin@…, 6 years ago

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

File size: 1.7 KB
Line 
1; @(#)getenv.s  1.4 90/10/14 21:57:45, AMD
2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3; Copyright 1990 Advanced Micro Devices, Inc.
4;
5; This software is the property of Advanced Micro Devices, Inc  (AMD)  which
6; specifically  grants the user the right to modify, use and distribute this
7; software provided this notice is not removed or altered.  All other rights
8; are reserved by AMD.
9;
10; AMD MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS
11; SOFTWARE.  IN NO EVENT SHALL AMD BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL
12; DAMAGES IN CONNECTION WITH OR ARISING FROM THE FURNISHING, PERFORMANCE, OR
13; USE OF THIS SOFTWARE.
14;
15; So that all may benefit from your experience, please report  any  problems
16; or  suggestions about this software to the 29K Technical Support Center at
17; 800-29-29-AMD (800-292-9263) in the USA, or 0800-89-1131  in  the  UK,  or
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19;
20; Advanced Micro Devices, Inc.
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26;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
27; getenv.s
28;       char *value = getenv( const char *name );
29;
30        .file   "getenv.s"
31
32        .include "sys/sysmac.h"
33
34        .text
35        .word   0x00030000      ; Debugger tag word
36        .global _getenv
37        .global __getenv
38_getenv:
39__getenv:
40        const tav,HIF_getenv @ asneq V_SYSCALL,gr1,gr1          ; HIF service trap
41        jmpti   tav, lr0        ; If tav is true, were finished, return.
42        const   tpc, _errno
43        consth  tpc, _errno     ; Otherwise,
44        store   0, 0, tav, tpc  ;   store error code in _errno,
45        jmpi    lr0             ;   then return
46        const   v0, 0           ;   with a value of 0 (NULL pointer).
47
48        .end
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