| 1 | /* $OpenBSD: profile.h,v 1.4 2021/05/21 16:49:57 deraadt Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 2015 Dale Rahn <drahn@dalerahn.com> |
| 5 | * |
| 6 | * Permission to use, copy, modify, and distribute this software for any |
| 7 | * purpose with or without fee is hereby granted, provided that the above |
| 8 | * copyright notice and this permission notice appear in all copies. |
| 9 | * |
| 10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 14 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 15 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 16 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 17 | */ |
| 18 | |
| 19 | #define _MCOUNT_DECL void _mcount |
| 20 | |
| 21 | #define MCOUNT_ASM_NAME "__mcount" |
| 22 | |
| 23 | #ifdef __PIC__ |
| 24 | #define PLTSYM "" /* XXX -aarch64 defaults to PLT? */ |
| 25 | #else |
| 26 | #define PLTSYM "" |
| 27 | #endif |
| 28 | |
| 29 | #define MCOUNT \ |
| 30 | __asm__ (".text \n;" \ |
| 31 | ".align 3 \n;" \ |
| 32 | ".globl " MCOUNT_ASM_NAME " \n;" \ |
| 33 | ".type " MCOUNT_ASM_NAME ",@function \n;" \ |
| 34 | MCOUNT_ASM_NAME ": \n;" \ |
| 35 | " addi sp, sp, -176 \n" \ |
| 36 | " sd fp, 0(sp) \n" \ |
| 37 | " sd ra, 8(sp) \n" \ |
| 38 | " sd s1, 24(sp) \n" \ |
| 39 | " sd a0, 32(sp) \n" \ |
| 40 | " sd a1, 40(sp) \n" \ |
| 41 | " sd a2, 48(sp) \n" \ |
| 42 | " sd a3, 56(sp) \n" \ |
| 43 | " sd a4, 64(sp) \n" \ |
| 44 | " sd a5, 72(sp) \n" \ |
| 45 | " sd a6, 80(sp) \n" \ |
| 46 | " sd a7, 88(sp) \n" \ |
| 47 | " sd s2, 96(sp) \n" \ |
| 48 | " sd s3, 104(sp) \n" \ |
| 49 | " sd s4, 112(sp) \n" \ |
| 50 | " sd s5, 120(sp) \n" \ |
| 51 | " sd s6, 128(sp) \n" \ |
| 52 | " sd s7, 136(sp) \n" \ |
| 53 | " sd s8, 144(sp) \n" \ |
| 54 | " sd s9, 152(sp) \n" \ |
| 55 | " sd s10, 160(sp) \n" \ |
| 56 | " sd s11, 168(sp) \n" \ |
| 57 | " ld a0, 8(fp) \n" \ |
| 58 | " mv a1, x1 \n" \ |
| 59 | " call " __STRING(_mcount) PLTSYM " \n" \ |
| 60 | /* restore argument registers */ \ |
| 61 | " ld fp, 0(sp) \n" \ |
| 62 | " ld ra, 8(sp) \n" \ |
| 63 | " ld s1, 24(sp) \n" \ |
| 64 | " ld a0, 32(sp) \n" \ |
| 65 | " ld a1, 40(sp) \n" \ |
| 66 | " ld a2, 48(sp) \n" \ |
| 67 | " ld a3, 56(sp) \n" \ |
| 68 | " ld a4, 64(sp) \n" \ |
| 69 | " ld a5, 72(sp) \n" \ |
| 70 | " ld a6, 80(sp) \n" \ |
| 71 | " ld a7, 88(sp) \n" \ |
| 72 | " ld s2, 96(sp) \n" \ |
| 73 | " ld s3, 104(sp) \n" \ |
| 74 | " ld s4, 112(sp) \n" \ |
| 75 | " ld s5, 120(sp) \n" \ |
| 76 | " ld s6, 128(sp) \n" \ |
| 77 | " ld s7, 136(sp) \n" \ |
| 78 | " ld s8, 144(sp) \n" \ |
| 79 | " ld s9, 152(sp) \n" \ |
| 80 | " ld s10, 160(sp) \n" \ |
| 81 | " ld s11, 168(sp) \n" \ |
| 82 | " addi sp, sp, 176 \n" \ |
| 83 | " jr ra \n"); |
| 84 | |
| 85 | #ifdef _KERNEL |
| 86 | // Change this to dair read/set, then restore. |
| 87 | #define MCOUNT_ENTER \ |
| 88 | __asm__ ("mrs %x0,daif; msr daifset, #0x2": "=r"(s)); |
| 89 | #define MCOUNT_EXIT \ |
| 90 | __asm__ ("msr daif, %x0":: "r"(s)); |
| 91 | |
| 92 | #endif |