1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* 2 /*
3 * Copyright (c) 2023 Intel Corporation 3 * Copyright (c) 2023 Intel Corporation
4 */ 4 */
5 5
6 #ifndef __ASSEMBLY__ 6 #ifndef __ASSEMBLY__
7 #define __ASSEMBLY__ 7 #define __ASSEMBLY__
8 #endif 8 #endif
9 9
10 #include <asm/csr.h> 10 #include <asm/csr.h>
11 11
12 .macro save_context 12 .macro save_context
13 addi sp, sp, (-8*34) 13 addi sp, sp, (-8*34)
14 sd x1, 0(sp) 14 sd x1, 0(sp)
15 sd x2, 8(sp) 15 sd x2, 8(sp)
16 sd x3, 16(sp) 16 sd x3, 16(sp)
17 sd x4, 24(sp) 17 sd x4, 24(sp)
18 sd x5, 32(sp) 18 sd x5, 32(sp)
19 sd x6, 40(sp) 19 sd x6, 40(sp)
20 sd x7, 48(sp) 20 sd x7, 48(sp)
21 sd x8, 56(sp) 21 sd x8, 56(sp)
22 sd x9, 64(sp) 22 sd x9, 64(sp)
23 sd x10, 72(sp) 23 sd x10, 72(sp)
24 sd x11, 80(sp) 24 sd x11, 80(sp)
25 sd x12, 88(sp) 25 sd x12, 88(sp)
26 sd x13, 96(sp) 26 sd x13, 96(sp)
27 sd x14, 104(sp) 27 sd x14, 104(sp)
28 sd x15, 112(sp) 28 sd x15, 112(sp)
29 sd x16, 120(sp) 29 sd x16, 120(sp)
30 sd x17, 128(sp) 30 sd x17, 128(sp)
31 sd x18, 136(sp) 31 sd x18, 136(sp)
32 sd x19, 144(sp) 32 sd x19, 144(sp)
33 sd x20, 152(sp) 33 sd x20, 152(sp)
34 sd x21, 160(sp) 34 sd x21, 160(sp)
35 sd x22, 168(sp) 35 sd x22, 168(sp)
36 sd x23, 176(sp) 36 sd x23, 176(sp)
37 sd x24, 184(sp) 37 sd x24, 184(sp)
38 sd x25, 192(sp) 38 sd x25, 192(sp)
39 sd x26, 200(sp) 39 sd x26, 200(sp)
40 sd x27, 208(sp) 40 sd x27, 208(sp)
41 sd x28, 216(sp) 41 sd x28, 216(sp)
42 sd x29, 224(sp) 42 sd x29, 224(sp)
43 sd x30, 232(sp) 43 sd x30, 232(sp)
44 sd x31, 240(sp) 44 sd x31, 240(sp)
45 csrr s0, CSR_SEPC 45 csrr s0, CSR_SEPC
46 csrr s1, CSR_SSTATUS 46 csrr s1, CSR_SSTATUS
47 csrr s2, CSR_SCAUSE 47 csrr s2, CSR_SCAUSE
48 sd s0, 248(sp) 48 sd s0, 248(sp)
49 sd s1, 256(sp) 49 sd s1, 256(sp)
50 sd s2, 264(sp) 50 sd s2, 264(sp)
51 .endm 51 .endm
52 52
53 .macro restore_context 53 .macro restore_context
54 ld s2, 264(sp) 54 ld s2, 264(sp)
55 ld s1, 256(sp) 55 ld s1, 256(sp)
56 ld s0, 248(sp) 56 ld s0, 248(sp)
57 csrw CSR_SCAUSE, s2 57 csrw CSR_SCAUSE, s2
58 csrw CSR_SSTATUS, s1 58 csrw CSR_SSTATUS, s1
59 csrw CSR_SEPC, s0 59 csrw CSR_SEPC, s0
60 ld x31, 240(sp) 60 ld x31, 240(sp)
61 ld x30, 232(sp) 61 ld x30, 232(sp)
62 ld x29, 224(sp) 62 ld x29, 224(sp)
63 ld x28, 216(sp) 63 ld x28, 216(sp)
64 ld x27, 208(sp) 64 ld x27, 208(sp)
65 ld x26, 200(sp) 65 ld x26, 200(sp)
66 ld x25, 192(sp) 66 ld x25, 192(sp)
67 ld x24, 184(sp) 67 ld x24, 184(sp)
68 ld x23, 176(sp) 68 ld x23, 176(sp)
69 ld x22, 168(sp) 69 ld x22, 168(sp)
70 ld x21, 160(sp) 70 ld x21, 160(sp)
71 ld x20, 152(sp) 71 ld x20, 152(sp)
72 ld x19, 144(sp) 72 ld x19, 144(sp)
73 ld x18, 136(sp) 73 ld x18, 136(sp)
74 ld x17, 128(sp) 74 ld x17, 128(sp)
75 ld x16, 120(sp) 75 ld x16, 120(sp)
76 ld x15, 112(sp) 76 ld x15, 112(sp)
77 ld x14, 104(sp) 77 ld x14, 104(sp)
78 ld x13, 96(sp) 78 ld x13, 96(sp)
79 ld x12, 88(sp) 79 ld x12, 88(sp)
80 ld x11, 80(sp) 80 ld x11, 80(sp)
81 ld x10, 72(sp) 81 ld x10, 72(sp)
82 ld x9, 64(sp) 82 ld x9, 64(sp)
83 ld x8, 56(sp) 83 ld x8, 56(sp)
84 ld x7, 48(sp) 84 ld x7, 48(sp)
85 ld x6, 40(sp) 85 ld x6, 40(sp)
86 ld x5, 32(sp) 86 ld x5, 32(sp)
87 ld x4, 24(sp) 87 ld x4, 24(sp)
88 ld x3, 16(sp) 88 ld x3, 16(sp)
89 ld x2, 8(sp) 89 ld x2, 8(sp)
90 ld x1, 0(sp) 90 ld x1, 0(sp)
91 addi sp, sp, (8*34) 91 addi sp, sp, (8*34)
92 .endm 92 .endm
93 93
94 .balign 4 94 .balign 4
95 .global exception_vectors 95 .global exception_vectors
96 exception_vectors: 96 exception_vectors:
97 save_context 97 save_context
98 move a0, sp 98 move a0, sp
99 call route_exception 99 call route_exception
100 restore_context 100 restore_context
101 sret 101 sret
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