arch/ppc-all/stdc/setjmp.s

   1 /*
   2     Copyright � 1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: ANSI C function setjmp()
   6     Lang: english
   7 */
   8
   9 /******************************************************************************
  10
  11     NAME
  12 #include <setjmp.h>
  13
  14         int setjmp (jmp_buf env);
  15
  16     FUNCTION
  17         Save the current context so that you can return to it later.
  18
  19     INPUTS
  20         env - The context/environment is saved here for later restoring
  21
  22     RESULT
  23         0 if it returns from setjmp() and 1 when it returns from longjmp().
  24
  25     NOTES
  26
  27     EXAMPLE
  28         jmp_buf env;
  29
  30         ... some code ...
  31
  32         if (!setjmp (env))
  33         {
  34             ... this code is executed after setjmp() returns ...
  35
  36             // This is no good example on how to use this function
  37             // You should not do that
  38             if (error)
  39                 longjmp (env, 5);
  40
  41             ... some code ...
  42         }
  43         else
  44         {
  45             ... this code is executed if you call longjmp(env) ...
  46         }
  47
  48     BUGS
  49
  50     SEE ALSO
  51         longjmp()
  52
  53     INTERNALS
  54
  55     HISTORY
  56         12.10.1999 Code rewritten according to glibc
  57 ******************************************************************************/
  58
  59 #include "aros/ppc/asm.h"
  60
  61         .text
  62         _ALIGNMENT
  63         .global AROS_CDEFNAME(setjmp)
  64         _FUNCTION(AROS_CDEFNAME(setjmp))
  65
  66 AROS_CDEFNAME(setjmp):
  67         stw  %r1,   4(3)
  68         mflr %r0
  69         stw  %r2,   8(3)
  70         stw  %r14, 16(3)
  71         stfd %f14, 88(3)
  72         stw  %r0,   0(3)
  73         stw  %r15, 20(3)
  74         stfd %f15, 96(3)
  75         mfcr %r0
  76         stw  %r16, 24(3)
  77         stfd %f16,104(3)
  78         stw  %r0,  12(3)
  79         stw  %r17, 28(3)
  80         stfd %f17,112(3)
  81         stw  %r18, 32(3)
  82         stfd %f18,120(3)
  83         stw  %r19, 36(3)
  84         stfd %f19,128(3)
  85         stw  %r20, 40(3)
  86         stfd %f20,136(3)
  87         stw  %r21, 44(3)
  88         stfd %f21,144(3)
  89         stw  %r22, 48(3)
  90         stfd %f22,152(3)
  91         stw  %r23, 52(3)
  92         stfd %f23,160(3)
  93         stw  %r24, 56(3)
  94         stfd %f24,168(3)
  95         stw  %r25, 60(3)
  96         stfd %f25,176(3)
  97         stw  %r26, 64(3)
  98         stfd %f26,184(3)
  99         stw  %r27, 68(3)
 100         stfd %f27,192(3)
 101         stw  %r28, 72(3)
 102         stfd %f28,200(3)
 103         stw  %r29, 76(3)
 104         stfd %f29,208(3)
 105         stw  %r30, 80(3)
 106         stfd %f30,216(3)
 107         stw  %r31, 84(3)
 108         stfd %f31,224(3)
 109         li %r3,0
 110         blr