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#include <picolibc.h>
19
20#define _ASM
21#define _SETJMP_H
22
23.text;
24.align 4;
25.globl _setjmp;
26.type _setjmp, STT_FUNC;
27
28_setjmp:
29	[--SP] = P0;		/* Save P0 */
30	P0 = R0;
31	R0 = [SP++];
32	[P0 + 0x00] = R0;	/* Save saved P0 */
33	[P0 + 0x04] = P1;
34	[P0 + 0x08] = P2;
35	[P0 + 0x0C] = P3;
36	[P0 + 0x10] = P4;
37	[P0 + 0x14] = P5;
38
39	[P0 + 0x18] = FP;	/* Frame Pointer */
40	[P0 + 0x1C] = SP;	/* Stack Pointer */
41
42	[P0 + 0x20] = P0;	/* Data Registers */
43	[P0 + 0x24] = R1;
44	[P0 + 0x28] = R2;
45	[P0 + 0x2C] = R3;
46	[P0 + 0x30] = R4;
47	[P0 + 0x34] = R5;
48	[P0 + 0x38] = R6;
49	[P0 + 0x3C] = R7;
50
51	R0 = ASTAT;
52	[P0 + 0x40] = R0;
53
54	R0 = LC0;		/* Loop Counters */
55	[P0 + 0x44] = R0;
56	R0 = LC1;
57	[P0 + 0x48] = R0;
58
59	R0 = A0.W;		/* Accumulators */
60	[P0 + 0x4C] = R0;
61	R0 = A0.X;
62	[P0 + 0x50] = R0;
63	R0 = A1.W;
64	[P0 + 0x54] = R0;
65	R0 = A1.X;
66	[P0 + 0x58] = R0;
67
68	R0 = I0;		/* Index Registers */
69	[P0 + 0x5C] = R0;
70	R0 = I1;
71	[P0 + 0x60] = R0;
72	R0 = I2;
73	[P0 + 0x64] = R0;
74	R0 = I3;
75	[P0 + 0x68] = R0;
76
77	R0 = M0;		/* Modifier Registers */
78	[P0 + 0x6C] = R0;
79	R0 = M1;
80	[P0 + 0x70] = R0;
81	R0 = M2;
82	[P0 + 0x74] = R0;
83	R0 = M3;
84	[P0 + 0x78] = R0;
85
86	R0 = L0;		/* Length Registers */
87	[P0 + 0x7c] = R0;
88	R0 = L1;
89	[P0 + 0x80] = R0;
90	R0 = L2;
91	[P0 + 0x84] = R0;
92	R0 = L3;
93	[P0 + 0x88] = R0;
94
95	R0 = B0;		/* Base Registers */
96	[P0 + 0x8C] = R0;
97	R0 = B1;
98	[P0 + 0x90] = R0;
99	R0 = B2;
100	[P0 + 0x94] = R0;
101	R0 = B3;
102	[P0 + 0x98] = R0;
103
104	R0 = RETS;
105	[P0 + 0x9C] = R0;
106
107	R0 = 0;
108
109	RTS;
110.size _setjmp, .-_setjmp;
111