| 1 | /* $OpenBSD: profile.h,v 1.1 2020/06/25 01:55:14 drahn Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 2020 Dale Rahn drahn@openbsd.org |
| 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 | /* |
| 20 | * mcount frame size skips over the red zone (288B) (calling function may use) |
| 21 | * and 128 bytes of local storage (32 bytes of reserved and 96 of our storage |
| 22 | * this function assumes it will only every call the local __mcount function |
| 23 | */ |
| 24 | #define MCOUNT \ |
| 25 | __asm__(" \n"\ |
| 26 | " .section \".text\" \n"\ |
| 27 | " .p2align 2 \n"\ |
| 28 | " .globl _mcount \n"\ |
| 29 | " .local __mcount \n"\ |
| 30 | " .type _mcount,@function \n"\ |
| 31 | "_mcount: \n"\ |
| 32 | ".L_mcount_gep0: \n"\ |
| 33 | " addis %r2, %r12, .TOC.-.L_mcount_gep0@ha; \n"\ |
| 34 | " addi %r2, %r2, .TOC.-.L_mcount_gep0@l; \n"\ |
| 35 | ".L_mcount_lep0: \n"\ |
| 36 | ".localentry _mcount, .L_mcount_lep0-.L_mcount_gep0; \n"\ |
| 37 | " ld %r11,16(%r1) \n"\ |
| 38 | " mflr %r0 \n"\ |
| 39 | " std %r0, 16(%r1) \n"\ |
| 40 | " stdu %r1,-(288+128)(%r1) \n"\ |
| 41 | " std %r3, 32(%r1) \n"\ |
| 42 | " std %r4, 40(%r1) \n"\ |
| 43 | " std %r5, 48(%r1) \n"\ |
| 44 | " std %r6, 56(%r1) \n"\ |
| 45 | " std %r7, 64(%r1) \n"\ |
| 46 | " std %r8, 72(%r1) \n"\ |
| 47 | " std %r9, 80(%r1) \n"\ |
| 48 | " std %r10,88(%r1) \n"\ |
| 49 | " std %r11,96(%r1) \n"\ |
| 50 | " mr %r4, %r0 \n"\ |
| 51 | " mr %r3, %r11 \n"\ |
| 52 | " bl __mcount \n"\ |
| 53 | " nop \n"\ |
| 54 | " ld %r3, 32(%r1) \n"\ |
| 55 | " ld %r4, 40(%r1) \n"\ |
| 56 | " ld %r5, 48(%r1) \n"\ |
| 57 | " ld %r6, 56(%r1) \n"\ |
| 58 | " ld %r7, 64(%r1) \n"\ |
| 59 | " ld %r8, 72(%r1) \n"\ |
| 60 | " ld %r9, 80(%r1) \n"\ |
| 61 | " ld %r10,88(%r1) \n"\ |
| 62 | " ld %r11,96(%r1) \n"\ |
| 63 | " addi %r1, %r1, (288+128) \n"\ |
| 64 | " ld %r0, 16(%r1) \n"\ |
| 65 | " std %r11,16(%r1) \n"\ |
| 66 | " mtlr %r0 \n"\ |
| 67 | " blr \n"\ |
| 68 | " .size _mcount, .-_mcount \n"\ |
| 69 | ); |
| 70 | #define _MCOUNT_DECL static void __mcount |