1 /* $OpenBSD: profile.h,v 1.2 1999/01/27 04:46:05 imp Exp $ */ 2 /*- 3 * SPDX-License-Identifier: BSD-3-Clause 4 * 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Ralph Campbell. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: @(#)profile.h 8.1 (Berkeley) 6/10/93 36 * JNPR: profile.h,v 1.4 2006/12/02 09:53:41 katta 37 * $FreeBSD$ 38 */ 39 #ifndef _MACHINE_PROFILE_H_ 40 #define _MACHINE_PROFILE_H_ 41 42 #define _MCOUNT_DECL void ___mcount 43 44 /*XXX The cprestore instruction is a "dummy" to shut up as(1). */ 45 46 /*XXX This is not MIPS64 safe. */ 47 48 #define MCOUNT \ 49 __asm(".text;" \ 50 ".globl _mcount;" \ 51 ".type _mcount,@function;" \ 52 "_mcount:;" \ 53 ".set noreorder;" \ 54 ".set noat;" \ 55 ".cpload $25;" \ 56 ".cprestore 4;" \ 57 "sw $4,8($29);" \ 58 "sw $5,12($29);" \ 59 "sw $6,16($29);" \ 60 "sw $7,20($29);" \ 61 "sw $1,0($29);" \ 62 "sw $31,4($29);" \ 63 "move $5,$31;" \ 64 "jal ___mcount;" \ 65 "move $4,$1;" \ 66 "lw $4,8($29);" \ 67 "lw $5,12($29);" \ 68 "lw $6,16($29);" \ 69 "lw $7,20($29);" \ 70 "lw $31,4($29);" \ 71 "lw $1,0($29);" \ 72 "addu $29,$29,8;" \ 73 "j $31;" \ 74 "move $31,$1;" \ 75 ".set reorder;" \ 76 ".set at"); 77 78 #ifdef _KERNEL 79 #define MCOUNT_DECL(s) u_long s; 80 #ifdef SMP 81 extern int mcount_lock; 82 #define MCOUNT_ENTER(s) { \ 83 s = intr_disable(); \ 84 while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1)) \ 85 /* nothing */ ; \ 86 } 87 #define MCOUNT_EXIT(s) { \ 88 atomic_store_rel_int(&mcount_lock, 0); \ 89 intr_restore(s); \ 90 } 91 #else 92 #define MCOUNT_ENTER(s) { s = intr_disable(); } 93 #define MCOUNT_EXIT(s) (intr_restore(s)) 94 #endif 95 96 /* REVISIT for mips */ 97 /* 98 * Config generates something to tell the compiler to align functions on 16 99 * byte boundaries. A strict alignment is good for keeping the tables small. 100 */ 101 #define FUNCTION_ALIGNMENT 16 102 103 #ifdef GUPROF 104 struct gmonparam; 105 void stopguprof __P((struct gmonparam *p)); 106 #else 107 #define stopguprof(p) 108 #endif /* GUPROF */ 109 110 #else /* !_KERNEL */ 111 112 #define FUNCTION_ALIGNMENT 4 113 114 #ifdef __mips_n64 115 typedef u_long uintfptr_t; 116 #else 117 typedef u_int uintfptr_t; 118 #endif 119 120 #endif /* _KERNEL */ 121 122 /* 123 * An unsigned integral type that can hold non-negative difference between 124 * function pointers. 125 */ 126 #ifdef __mips_n64 127 typedef u_long fptrdiff_t; 128 #else 129 typedef u_int fptrdiff_t; 130 #endif 131 132 #ifdef _KERNEL 133 134 void mcount(uintfptr_t frompc, uintfptr_t selfpc); 135 136 #ifdef GUPROF 137 struct gmonparam; 138 139 void nullfunc_loop_profiled(void); 140 void nullfunc_profiled(void); 141 void startguprof(struct gmonparam *p); 142 void stopguprof(struct gmonparam *p); 143 #else 144 #define startguprof(p) 145 #define stopguprof(p) 146 #endif /* GUPROF */ 147 148 #else /* !_KERNEL */ 149 150 #include <sys/cdefs.h> 151 152 __BEGIN_DECLS 153 #ifdef __GNUC__ 154 #ifdef __ELF__ 155 void mcount(void) __asm(".mcount"); 156 #else 157 void mcount(void) __asm("mcount"); 158 #endif 159 #endif 160 void _mcount(uintfptr_t frompc, uintfptr_t selfpc); 161 __END_DECLS 162 163 #endif /* _KERNEL */ 164 165 #ifdef GUPROF 166 /* XXX doesn't quite work outside kernel yet. */ 167 extern int cputime_bias; 168 169 __BEGIN_DECLS 170 int cputime(void); 171 void empty_loop(void); 172 void mexitcount(uintfptr_t selfpc); 173 void nullfunc(void); 174 void nullfunc_loop(void); 175 __END_DECLS 176 #endif 177 178 #endif /* !_MACHINE_PROFILE_H_ */ 179