blob: d171eca623b6fc744cb5f349dd563d6e583dd788 [file] [log] [blame]
Alan Kaoc15ac4f2018-02-13 13:13:17 +08001/* SPDX-License-Identifier: GPL-2.0 */
2/* Copyright (C) 2017 Andes Technology Corporation */
3
4#include <linux/init.h>
5#include <linux/linkage.h>
6#include <asm/asm.h>
7#include <asm/csr.h>
8#include <asm/unistd.h>
9#include <asm/thread_info.h>
10#include <asm/asm-offsets.h>
11#include <asm-generic/export.h>
12#include <asm/ftrace.h>
13
14 .text
15
Guo Renafc76b82020-12-17 16:01:41 +000016#define FENTRY_RA_OFFSET 12
17#define ABI_SIZE_ON_STACK 72
18#define ABI_A0 0
19#define ABI_A1 8
20#define ABI_A2 16
21#define ABI_A3 24
22#define ABI_A4 32
23#define ABI_A5 40
24#define ABI_A6 48
25#define ABI_A7 56
26#define ABI_RA 64
27
28 .macro SAVE_ABI
29 addi sp, sp, -SZREG
30 addi sp, sp, -ABI_SIZE_ON_STACK
31
32 REG_S a0, ABI_A0(sp)
33 REG_S a1, ABI_A1(sp)
34 REG_S a2, ABI_A2(sp)
35 REG_S a3, ABI_A3(sp)
36 REG_S a4, ABI_A4(sp)
37 REG_S a5, ABI_A5(sp)
38 REG_S a6, ABI_A6(sp)
39 REG_S a7, ABI_A7(sp)
40 REG_S ra, ABI_RA(sp)
Alan Kaoc15ac4f2018-02-13 13:13:17 +080041 .endm
42
Guo Renafc76b82020-12-17 16:01:41 +000043 .macro RESTORE_ABI
44 REG_L a0, ABI_A0(sp)
45 REG_L a1, ABI_A1(sp)
46 REG_L a2, ABI_A2(sp)
47 REG_L a3, ABI_A3(sp)
48 REG_L a4, ABI_A4(sp)
49 REG_L a5, ABI_A5(sp)
50 REG_L a6, ABI_A6(sp)
51 REG_L a7, ABI_A7(sp)
52 REG_L ra, ABI_RA(sp)
53
54 addi sp, sp, ABI_SIZE_ON_STACK
55 addi sp, sp, SZREG
Alan Kaoc15ac4f2018-02-13 13:13:17 +080056 .endm
57
Guo Renafc76b82020-12-17 16:01:41 +000058#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
59 .macro SAVE_ALL
60 addi sp, sp, -SZREG
61 addi sp, sp, -PT_SIZE_ON_STACK
62
63 REG_S x1, PT_EPC(sp)
64 addi sp, sp, PT_SIZE_ON_STACK
65 REG_L x1, (sp)
66 addi sp, sp, -PT_SIZE_ON_STACK
67 REG_S x1, PT_RA(sp)
68 REG_L x1, PT_EPC(sp)
69
70 REG_S x2, PT_SP(sp)
71 REG_S x3, PT_GP(sp)
72 REG_S x4, PT_TP(sp)
73 REG_S x5, PT_T0(sp)
74 REG_S x6, PT_T1(sp)
75 REG_S x7, PT_T2(sp)
76 REG_S x8, PT_S0(sp)
77 REG_S x9, PT_S1(sp)
78 REG_S x10, PT_A0(sp)
79 REG_S x11, PT_A1(sp)
80 REG_S x12, PT_A2(sp)
81 REG_S x13, PT_A3(sp)
82 REG_S x14, PT_A4(sp)
83 REG_S x15, PT_A5(sp)
84 REG_S x16, PT_A6(sp)
85 REG_S x17, PT_A7(sp)
86 REG_S x18, PT_S2(sp)
87 REG_S x19, PT_S3(sp)
88 REG_S x20, PT_S4(sp)
89 REG_S x21, PT_S5(sp)
90 REG_S x22, PT_S6(sp)
91 REG_S x23, PT_S7(sp)
92 REG_S x24, PT_S8(sp)
93 REG_S x25, PT_S9(sp)
94 REG_S x26, PT_S10(sp)
95 REG_S x27, PT_S11(sp)
96 REG_S x28, PT_T3(sp)
97 REG_S x29, PT_T4(sp)
98 REG_S x30, PT_T5(sp)
99 REG_S x31, PT_T6(sp)
Alan Kaobc1a4c32018-02-13 13:13:18 +0800100 .endm
101
Guo Renafc76b82020-12-17 16:01:41 +0000102 .macro RESTORE_ALL
103 REG_L x1, PT_RA(sp)
104 addi sp, sp, PT_SIZE_ON_STACK
105 REG_S x1, (sp)
106 addi sp, sp, -PT_SIZE_ON_STACK
107 REG_L x1, PT_EPC(sp)
108 REG_L x2, PT_SP(sp)
109 REG_L x3, PT_GP(sp)
110 REG_L x4, PT_TP(sp)
111 REG_L x5, PT_T0(sp)
112 REG_L x6, PT_T1(sp)
113 REG_L x7, PT_T2(sp)
114 REG_L x8, PT_S0(sp)
115 REG_L x9, PT_S1(sp)
116 REG_L x10, PT_A0(sp)
117 REG_L x11, PT_A1(sp)
118 REG_L x12, PT_A2(sp)
119 REG_L x13, PT_A3(sp)
120 REG_L x14, PT_A4(sp)
121 REG_L x15, PT_A5(sp)
122 REG_L x16, PT_A6(sp)
123 REG_L x17, PT_A7(sp)
124 REG_L x18, PT_S2(sp)
125 REG_L x19, PT_S3(sp)
126 REG_L x20, PT_S4(sp)
127 REG_L x21, PT_S5(sp)
128 REG_L x22, PT_S6(sp)
129 REG_L x23, PT_S7(sp)
130 REG_L x24, PT_S8(sp)
131 REG_L x25, PT_S9(sp)
132 REG_L x26, PT_S10(sp)
133 REG_L x27, PT_S11(sp)
134 REG_L x28, PT_T3(sp)
135 REG_L x29, PT_T4(sp)
136 REG_L x30, PT_T5(sp)
137 REG_L x31, PT_T6(sp)
138
139 addi sp, sp, PT_SIZE_ON_STACK
140 addi sp, sp, SZREG
141 .endm
142#endif /* CONFIG_DYNAMIC_FTRACE_WITH_REGS */
Alan Kaobc1a4c32018-02-13 13:13:18 +0800143
Alan Kaoc15ac4f2018-02-13 13:13:17 +0800144ENTRY(ftrace_caller)
Guo Renafc76b82020-12-17 16:01:41 +0000145 SAVE_ABI
Alan Kaobc1a4c32018-02-13 13:13:18 +0800146
Guo Renafc76b82020-12-17 16:01:41 +0000147 addi a0, ra, -FENTRY_RA_OFFSET
148 la a1, function_trace_op
149 REG_L a2, 0(a1)
150 REG_L a1, ABI_SIZE_ON_STACK(sp)
151 mv a3, sp
Alan Kaobc1a4c32018-02-13 13:13:18 +0800152
Alan Kaoc15ac4f2018-02-13 13:13:17 +0800153ftrace_call:
154 .global ftrace_call
Alan Kaoc15ac4f2018-02-13 13:13:17 +0800155 call ftrace_stub
Alan Kaobc1a4c32018-02-13 13:13:18 +0800156
157#ifdef CONFIG_FUNCTION_GRAPH_TRACER
Guo Renafc76b82020-12-17 16:01:41 +0000158 addi a0, sp, ABI_SIZE_ON_STACK
159 REG_L a1, ABI_RA(sp)
160 addi a1, a1, -FENTRY_RA_OFFSET
161#ifdef HAVE_FUNCTION_GRAPH_FP_TEST
162 mv a2, s0
Alan Kaobc1a4c32018-02-13 13:13:18 +0800163#endif
Guo Renafc76b82020-12-17 16:01:41 +0000164ftrace_graph_call:
165 .global ftrace_graph_call
166 call ftrace_stub
167#endif
168 RESTORE_ABI
Alan Kaoc15ac4f2018-02-13 13:13:17 +0800169 ret
170ENDPROC(ftrace_caller)
Alan Kaoaea4c672018-02-13 13:13:20 +0800171
172#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
Alan Kaoaea4c672018-02-13 13:13:20 +0800173ENTRY(ftrace_regs_caller)
Alan Kaoaea4c672018-02-13 13:13:20 +0800174 SAVE_ALL
175
Guo Renafc76b82020-12-17 16:01:41 +0000176 addi a0, ra, -FENTRY_RA_OFFSET
177 la a1, function_trace_op
178 REG_L a2, 0(a1)
179 REG_L a1, PT_SIZE_ON_STACK(sp)
180 mv a3, sp
181
Alan Kaoaea4c672018-02-13 13:13:20 +0800182ftrace_regs_call:
183 .global ftrace_regs_call
184 call ftrace_stub
185
186#ifdef CONFIG_FUNCTION_GRAPH_TRACER
Guo Renafc76b82020-12-17 16:01:41 +0000187 addi a0, sp, PT_RA
188 REG_L a1, PT_EPC(sp)
189 addi a1, a1, -FENTRY_RA_OFFSET
190#ifdef HAVE_FUNCTION_GRAPH_FP_TEST
191 mv a2, s0
192#endif
193ftrace_graph_regs_call:
194 .global ftrace_graph_regs_call
195 call ftrace_stub
Alan Kaoaea4c672018-02-13 13:13:20 +0800196#endif
197
198 RESTORE_ALL
199 ret
200ENDPROC(ftrace_regs_caller)
201#endif /* CONFIG_DYNAMIC_FTRACE_WITH_REGS */