1 /* $OpenBSD: profile.h,v 1.6 2003/06/03 01:35:30 drahn Exp $ */ 2 3 /* 4 * Copyright (c) 1998 Dale Rahn. 5 * All rights reserved. 6 * 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 #define MCOUNT \ 29 __asm__(" \ 30 .section \".text\" \n\ 31 .align 2 \n\ 32 .globl _mcount \n\ 33 .type _mcount,@function \n\ 34 _mcount: \n\ 35 lwz 11, 4(1) \n\ 36 mflr 0 \n\ 37 stw 0, 4(1) \n\ 38 stwu 1, -48(1) \n\ 39 stw 3, 8(1) \n\ 40 stw 4, 12(1) \n\ 41 stw 5, 16(1) \n\ 42 stw 6, 20(1) \n\ 43 stw 7, 24(1) \n\ 44 stw 8, 28(1) \n\ 45 stw 9, 32(1) \n\ 46 stw 10,36(1) \n\ 47 stw 11,40(1) \n\ 48 mr 4, 0 \n\ 49 mr 3, 11 \n\ 50 bl __mcount \n\ 51 lwz 3, 8(1) \n\ 52 lwz 4, 12(1) \n\ 53 lwz 5, 16(1) \n\ 54 lwz 6, 20(1) \n\ 55 lwz 7, 24(1) \n\ 56 lwz 8, 28(1) \n\ 57 lwz 9, 32(1) \n\ 58 lwz 10,36(1) \n\ 59 lwz 11,40(1) \n\ 60 addi 1, 1, 48 \n\ 61 lwz 0, 4(1) \n\ 62 mtlr 11 \n\ 63 stw 11, 4(1) \n\ 64 mtctr 0 \n\ 65 bctr \n\ 66 .Lfe2: \n\ 67 .size _mcount, .Lfe2-_mcount \n\ 68 "); 69 #define _MCOUNT_DECL static void __mcount 70 #ifdef _KERNEL 71 #define MCOUNT_ENTER \ 72 __asm volatile("mfmsr %0" : "=r"(s)); \ 73 if ((s & (PSL_IR | PSL_DR)) != (PSL_IR | PSL_DR)) \ 74 return; /* prof not possible in real mode */ \ 75 s &= ~PSL_POW; \ 76 __asm volatile("mtmsr %0" :: "r"(s & ~PSL_EE)) 77 78 #define MCOUNT_EXIT \ 79 __asm volatile("mtmsr %0" :: "r"(s)) 80 #endif /* _KERNEL */ 81