Alan Kao | c15ac4f | 2018-02-13 13:13:17 +0800 | [diff] [blame] | 1 | /* 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 Ren | afc76b8 | 2020-12-17 16:01:41 +0000 | [diff] [blame] | 16 | #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 Kao | c15ac4f | 2018-02-13 13:13:17 +0800 | [diff] [blame] | 41 | .endm |
| 42 | |
Guo Ren | afc76b8 | 2020-12-17 16:01:41 +0000 | [diff] [blame] | 43 | .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 Kao | c15ac4f | 2018-02-13 13:13:17 +0800 | [diff] [blame] | 56 | .endm |
| 57 | |
Guo Ren | afc76b8 | 2020-12-17 16:01:41 +0000 | [diff] [blame] | 58 | #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 Kao | bc1a4c3 | 2018-02-13 13:13:18 +0800 | [diff] [blame] | 100 | .endm |
| 101 | |
Guo Ren | afc76b8 | 2020-12-17 16:01:41 +0000 | [diff] [blame] | 102 | .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 Kao | bc1a4c3 | 2018-02-13 13:13:18 +0800 | [diff] [blame] | 143 | |
Alan Kao | c15ac4f | 2018-02-13 13:13:17 +0800 | [diff] [blame] | 144 | ENTRY(ftrace_caller) |
Guo Ren | afc76b8 | 2020-12-17 16:01:41 +0000 | [diff] [blame] | 145 | SAVE_ABI |
Alan Kao | bc1a4c3 | 2018-02-13 13:13:18 +0800 | [diff] [blame] | 146 | |
Guo Ren | afc76b8 | 2020-12-17 16:01:41 +0000 | [diff] [blame] | 147 | 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 Kao | bc1a4c3 | 2018-02-13 13:13:18 +0800 | [diff] [blame] | 152 | |
Alan Kao | c15ac4f | 2018-02-13 13:13:17 +0800 | [diff] [blame] | 153 | ftrace_call: |
| 154 | .global ftrace_call |
Alan Kao | c15ac4f | 2018-02-13 13:13:17 +0800 | [diff] [blame] | 155 | call ftrace_stub |
Alan Kao | bc1a4c3 | 2018-02-13 13:13:18 +0800 | [diff] [blame] | 156 | |
| 157 | #ifdef CONFIG_FUNCTION_GRAPH_TRACER |
Guo Ren | afc76b8 | 2020-12-17 16:01:41 +0000 | [diff] [blame] | 158 | 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 Kao | bc1a4c3 | 2018-02-13 13:13:18 +0800 | [diff] [blame] | 163 | #endif |
Guo Ren | afc76b8 | 2020-12-17 16:01:41 +0000 | [diff] [blame] | 164 | ftrace_graph_call: |
| 165 | .global ftrace_graph_call |
| 166 | call ftrace_stub |
| 167 | #endif |
| 168 | RESTORE_ABI |
Alan Kao | c15ac4f | 2018-02-13 13:13:17 +0800 | [diff] [blame] | 169 | ret |
| 170 | ENDPROC(ftrace_caller) |
Alan Kao | aea4c67 | 2018-02-13 13:13:20 +0800 | [diff] [blame] | 171 | |
| 172 | #ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS |
Alan Kao | aea4c67 | 2018-02-13 13:13:20 +0800 | [diff] [blame] | 173 | ENTRY(ftrace_regs_caller) |
Alan Kao | aea4c67 | 2018-02-13 13:13:20 +0800 | [diff] [blame] | 174 | SAVE_ALL |
| 175 | |
Guo Ren | afc76b8 | 2020-12-17 16:01:41 +0000 | [diff] [blame] | 176 | 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 Kao | aea4c67 | 2018-02-13 13:13:20 +0800 | [diff] [blame] | 182 | ftrace_regs_call: |
| 183 | .global ftrace_regs_call |
| 184 | call ftrace_stub |
| 185 | |
| 186 | #ifdef CONFIG_FUNCTION_GRAPH_TRACER |
Guo Ren | afc76b8 | 2020-12-17 16:01:41 +0000 | [diff] [blame] | 187 | 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 |
| 193 | ftrace_graph_regs_call: |
| 194 | .global ftrace_graph_regs_call |
| 195 | call ftrace_stub |
Alan Kao | aea4c67 | 2018-02-13 13:13:20 +0800 | [diff] [blame] | 196 | #endif |
| 197 | |
| 198 | RESTORE_ALL |
| 199 | ret |
| 200 | ENDPROC(ftrace_regs_caller) |
| 201 | #endif /* CONFIG_DYNAMIC_FTRACE_WITH_REGS */ |