1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/* c-isr library stuff of Andes NDS32 cpu for GNU compiler
Copyright (C) 2012-2013 Free Software Foundation, Inc.
Contributed by Andes Technology Corporation.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#include "save_mac_regs.inc"
#include "save_fpu_regs.inc"
#include "save_fpu_regs_00.inc"
#include "save_fpu_regs_01.inc"
#include "save_fpu_regs_02.inc"
#include "save_fpu_regs_03.inc"
#include "save_all.inc"
#include "save_partial.inc"
#include "adj_intr_lvl.inc"
#include "restore_mac_regs.inc"
#include "restore_fpu_regs_00.inc"
#include "restore_fpu_regs_01.inc"
#include "restore_fpu_regs_02.inc"
#include "restore_fpu_regs_03.inc"
#include "restore_fpu_regs.inc"
#include "restore_all.inc"
#include "restore_partial.inc"
.section .nds32_isr, "ax" /* Put it in the section of 1st level handler. */
.align 1
/*
First Level Handlers
1. First Level Handlers are invokded in vector section via jump instruction
with specific names for different configurations.
2. Naming Format: _nds32_e_SR_NT for exception handlers.
_nds32_i_SR_NT for interrupt handlers.
2.1 All upper case letters are replaced with specific lower case letters encodings.
2.2 SR: Saved Registers
sa: Save All regs (context)
ps: Partial Save (all caller-saved regs)
2.3 NT: Nested Type
ns: nested
nn: not nested
nr: nested ready
*/
/*
This is original 16-byte vector size version.
*/
#ifdef NDS32_SAVE_ALL_REGS
#if defined(NDS32_NESTED)
.globl _nds32_e_sa_ns
.type _nds32_e_sa_ns, @function
_nds32_e_sa_ns:
#elif defined(NDS32_NESTED_READY)
.globl _nds32_e_sa_nr
.type _nds32_e_sa_nr, @function
_nds32_e_sa_nr:
#else /* Not nested handler. */
.globl _nds32_e_sa_nn
.type _nds32_e_sa_nn, @function
_nds32_e_sa_nn:
#endif /* endif for Nest Type */
#else /* not NDS32_SAVE_ALL_REGS */
#if defined(NDS32_NESTED)
.globl _nds32_e_ps_ns
.type _nds32_e_ps_ns, @function
_nds32_e_ps_ns:
#elif defined(NDS32_NESTED_READY)
.globl _nds32_e_ps_nr
.type _nds32_e_ps_nr, @function
_nds32_e_ps_nr:
#else /* Not nested handler. */
.globl _nds32_e_ps_nn
.type _nds32_e_ps_nn, @function
_nds32_e_ps_nn:
#endif /* endif for Nest Type */
#endif /* not NDS32_SAVE_ALL_REGS */
/*
This is 16-byte vector size version.
The vector id was restored into $r0 in vector by compiler.
*/
#ifdef NDS32_SAVE_ALL_REGS
SAVE_ALL
#else
SAVE_PARTIAL
#endif
/* Prepare to call 2nd level handler. */
la $r2, _nds32_jmptbl_00
lw $r2, [$r2 + $r0 << #2]
ADJ_INTR_LVL /* Adjust INTR level. $r3 is clobbered. */
jral $r2
/* Restore used registers. */
#ifdef NDS32_SAVE_ALL_REGS
RESTORE_ALL
#else
RESTORE_PARTIAL
#endif
iret
#ifdef NDS32_SAVE_ALL_REGS
#if defined(NDS32_NESTED)
.size _nds32_e_sa_ns, .-_nds32_e_sa_ns
#elif defined(NDS32_NESTED_READY)
.size _nds32_e_sa_nr, .-_nds32_e_sa_nr
#else /* Not nested handler. */
.size _nds32_e_sa_nn, .-_nds32_e_sa_nn
#endif /* endif for Nest Type */
#else /* not NDS32_SAVE_ALL_REGS */
#if defined(NDS32_NESTED)
.size _nds32_e_ps_ns, .-_nds32_e_ps_ns
#elif defined(NDS32_NESTED_READY)
.size _nds32_e_ps_nr, .-_nds32_e_ps_nr
#else /* Not nested handler. */
.size _nds32_e_ps_nn, .-_nds32_e_ps_nn
#endif /* endif for Nest Type */
#endif /* not NDS32_SAVE_ALL_REGS */
|
