1 | /* |
---|
2 | * Copyright (c) 2011 Aeroflex Gaisler |
---|
3 | * |
---|
4 | * BSD license: |
---|
5 | * |
---|
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
---|
7 | * of this software and associated documentation files (the "Software"), to deal |
---|
8 | * in the Software without restriction, including without limitation the rights |
---|
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
---|
10 | * copies of the Software, and to permit persons to whom the Software is |
---|
11 | * furnished to do so, subject to the following conditions: |
---|
12 | * |
---|
13 | * The above copyright notice and this permission notice shall be included in |
---|
14 | * all copies or substantial portions of the Software. |
---|
15 | * |
---|
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
---|
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
---|
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
---|
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
---|
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
---|
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
---|
22 | * THE SOFTWARE. |
---|
23 | */ |
---|
24 | |
---|
25 | |
---|
26 | #include <asm-leon/head.h> |
---|
27 | |
---|
28 | .section .text |
---|
29 | /* ------- */ |
---|
30 | .weak _cleanregs_custom_weak |
---|
31 | .set _cleanregs_custom_weak,_cleanregs_donothing |
---|
32 | /* ------- */ |
---|
33 | .global _cleanregs_libgloss |
---|
34 | |
---|
35 | |
---|
36 | _cleanregs_donothing: |
---|
37 | _cleanregs_libgloss: |
---|
38 | retl |
---|
39 | nop |
---|
40 | |
---|
41 | |
---|
42 | #define NUMREGWINDOWS 8 |
---|
43 | |
---|
44 | //_cleanregs_libgloss: |
---|
45 | |
---|
46 | !'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' |
---|
47 | ! initialize regs with values |
---|
48 | //#define REGINIT |
---|
49 | #ifdef REGINIT |
---|
50 | |
---|
51 | mov %psr, %g3 |
---|
52 | mov %wim, %g4 |
---|
53 | mov %sp, %g5 |
---|
54 | mov %fp, %g6 |
---|
55 | mov %o7, %g7 |
---|
56 | mov %g0, %wim |
---|
57 | set 0, %g1 |
---|
58 | andn %g3,0x1f,%l0 |
---|
59 | mov %l0,%psr |
---|
60 | nop; nop; nop |
---|
61 | |
---|
62 | 3: set 0x0001,%i0 |
---|
63 | set 0x0101,%i1 |
---|
64 | set 0x0201,%i2 |
---|
65 | set 0x0301,%i3 |
---|
66 | set 0x0401,%i4 |
---|
67 | set 0x0501,%i5 |
---|
68 | set 0x0601,%i6 |
---|
69 | set 0x0701,%i7 |
---|
70 | set 0x0801,%l0 |
---|
71 | set 0x0901,%l1 |
---|
72 | set 0x1001,%l2 |
---|
73 | set 0x1101,%l3 |
---|
74 | set 0x1201,%l4 |
---|
75 | set 0x1301,%l5 |
---|
76 | set 0x1401,%l6 |
---|
77 | set 0x1501,%l7 |
---|
78 | or %g1,%i0,%i0 |
---|
79 | or %g1,%i1,%i1 |
---|
80 | or %g1,%i2,%i2 |
---|
81 | or %g1,%i3,%i3 |
---|
82 | or %g1,%i4,%i4 |
---|
83 | or %g1,%i5,%i5 |
---|
84 | or %g1,%i6,%i6 |
---|
85 | or %g1,%i7,%i7 |
---|
86 | or %g1,%l0,%l0 |
---|
87 | or %g1,%l1,%l1 |
---|
88 | or %g1,%l2,%l2 |
---|
89 | or %g1,%l3,%l3 |
---|
90 | or %g1,%l4,%l4 |
---|
91 | or %g1,%l5,%l5 |
---|
92 | or %g1,%l6,%l6 |
---|
93 | or %g1,%l7,%l7 |
---|
94 | restore |
---|
95 | set 0x10000,%g2 |
---|
96 | add %g1,%g2,%g1 |
---|
97 | set NUMREGWINDOWS*0x10000,%g2 |
---|
98 | cmp %g1,%g2 |
---|
99 | bne 3b |
---|
100 | nop |
---|
101 | |
---|
102 | mov %g4,%wim |
---|
103 | nop; nop; nop; |
---|
104 | mov %g3,%psr |
---|
105 | nop; nop; nop; |
---|
106 | mov %g5, %sp |
---|
107 | mov %g6, %fp |
---|
108 | |
---|
109 | #endif |
---|
110 | !'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' |
---|
111 | |
---|
112 | jmpl %g7+8,%g0 |
---|
113 | nop |
---|
114 | |
---|