1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #include <linux/linkage.h> 3 4 /* Offset is based on macros from arch/powerpc/include/uapi/asm/ptrace.h. */ 5 #define R0 0 6 #define R1 1 * 8 7 #define R2 2 * 8 8 #define R3 3 * 8 9 #define R4 4 * 8 10 #define R5 5 * 8 11 #define R6 6 * 8 12 #define R7 7 * 8 13 #define R8 8 * 8 14 #define R9 9 * 8 15 #define R10 10 * 8 16 #define R11 11 * 8 17 #define R12 12 * 8 18 #define R13 13 * 8 19 #define R14 14 * 8 20 #define R15 15 * 8 21 #define R16 16 * 8 22 #define R17 17 * 8 23 #define R18 18 * 8 24 #define R19 19 * 8 25 #define R20 20 * 8 26 #define R21 21 * 8 27 #define R22 22 * 8 28 #define R23 23 * 8 29 #define R24 24 * 8 30 #define R25 25 * 8 31 #define R26 26 * 8 32 #define R27 27 * 8 33 #define R28 28 * 8 34 #define R29 29 * 8 35 #define R30 30 * 8 36 #define R31 31 * 8 37 #define NIP 32 * 8 38 #define CTR 35 * 8 39 #define LINK 36 * 8 40 #define XER 37 * 8 41 42 .globl perf_regs_load 43 perf_regs_load: 44 std 0, R0(3) 45 std 1, R1(3) 46 std 2, R2(3) 47 std 3, R3(3) 48 std 4, R4(3) 49 std 5, R5(3) 50 std 6, R6(3) 51 std 7, R7(3) 52 std 8, R8(3) 53 std 9, R9(3) 54 std 10, R10(3) 55 std 11, R11(3) 56 std 12, R12(3) 57 std 13, R13(3) 58 std 14, R14(3) 59 std 15, R15(3) 60 std 16, R16(3) 61 std 17, R17(3) 62 std 18, R18(3) 63 std 19, R19(3) 64 std 20, R20(3) 65 std 21, R21(3) 66 std 22, R22(3) 67 std 23, R23(3) 68 std 24, R24(3) 69 std 25, R25(3) 70 std 26, R26(3) 71 std 27, R27(3) 72 std 28, R28(3) 73 std 29, R29(3) 74 std 30, R30(3) 75 std 31, R31(3) 76 77 /* store NIP */ 78 mflr 4 79 std 4, NIP(3) 80 81 /* Store LR */ 82 std 4, LINK(3) 83 84 /* Store XER */ 85 mfxer 4 86 std 4, XER(3) 87 88 /* Store CTR */ 89 mfctr 4 90 std 4, CTR(3) 91 92 /* Restore original value of r4 */ 93 ld 4, R4(3) 94 95 blr
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