newlib/libc/machine/bfin/setjmp.S

   1 /*
   2  * setjmp for the Blackfin processor
   3  *
   4  * Copyright (C) 2006 Analog Devices, Inc.
   5  *
   6  * The authors hereby grant permission to use, copy, modify, distribute,
   7  * and license this software and its documentation for any purpose, provided
   8  * that existing copyright notices are retained in all copies and that this
   9  * notice is included verbatim in any distributions. No written agreement,
  10  * license, or royalty fee is required for any of the authorized uses.
  11  * Modifications to this software may be copyrighted by their authors
  12  * and need not follow the licensing terms described here, provided that
  13  * the new terms are clearly indicated on the first page of each file where
  14  * they apply.
  15  */
  16
  17
  18 #define _ASM
  19 #define _SETJMP_H
  20
  21 .text;
  22 .align 4;
  23 .globl _setjmp;
  24 .type _setjmp, STT_FUNC;
  25
  26 _setjmp:
  27         [--SP] = P0;            /* Save P0 */
  28         P0 = R0;
  29         R0 = [SP++];
  30         [P0 + 0x00] = R0;       /* Save saved P0 */
  31         [P0 + 0x04] = P1;
  32         [P0 + 0x08] = P2;
  33         [P0 + 0x0C] = P3;
  34         [P0 + 0x10] = P4;
  35         [P0 + 0x14] = P5;
  36
  37         [P0 + 0x18] = FP;       /* Frame Pointer */
  38         [P0 + 0x1C] = SP;       /* Stack Pointer */
  39
  40         [P0 + 0x20] = P0;       /* Data Registers */
  41         [P0 + 0x24] = R1;
  42         [P0 + 0x28] = R2;
  43         [P0 + 0x2C] = R3;
  44         [P0 + 0x30] = R4;
  45         [P0 + 0x34] = R5;
  46         [P0 + 0x38] = R6;
  47         [P0 + 0x3C] = R7;
  48
  49         R0 = ASTAT;
  50         [P0 + 0x40] = R0;
  51
  52         R0 = LC0;               /* Loop Counters */
  53         [P0 + 0x44] = R0;
  54         R0 = LC1;
  55         [P0 + 0x48] = R0;
  56
  57         R0 = A0.W;              /* Accumulators */
  58         [P0 + 0x4C] = R0;
  59         R0 = A0.X;
  60         [P0 + 0x50] = R0;
  61         R0 = A1.W;
  62         [P0 + 0x54] = R0;
  63         R0 = A1.X;
  64         [P0 + 0x58] = R0;
  65
  66         R0 = I0;                /* Index Registers */
  67         [P0 + 0x5C] = R0;
  68         R0 = I1;
  69         [P0 + 0x60] = R0;
  70         R0 = I2;
  71         [P0 + 0x64] = R0;
  72         R0 = I3;
  73         [P0 + 0x68] = R0;
  74
  75         R0 = M0;                /* Modifier Registers */
  76         [P0 + 0x6C] = R0;
  77         R0 = M1;
  78         [P0 + 0x70] = R0;
  79         R0 = M2;
  80         [P0 + 0x74] = R0;
  81         R0 = M3;
  82         [P0 + 0x78] = R0;
  83
  84         R0 = L0;                /* Length Registers */
  85         [P0 + 0x7c] = R0;
  86         R0 = L1;
  87         [P0 + 0x80] = R0;
  88         R0 = L2;
  89         [P0 + 0x84] = R0;
  90         R0 = L3;
  91         [P0 + 0x88] = R0;
  92
  93         R0 = B0;                /* Base Registers */
  94         [P0 + 0x8C] = R0;
  95         R0 = B1;
  96         [P0 + 0x90] = R0;
  97         R0 = B2;
  98         [P0 + 0x94] = R0;
  99         R0 = B3;
 100         [P0 + 0x98] = R0;
 101
 102         R0 = RETS;
 103         [P0 + 0x9C] = R0;
 104
 105         R0 = 0;
 106
 107         RTS;
 108 .size _setjmp, .-_setjmp;