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(".globl _mcount;" \ 50 ".type _mcount,@function;" \ 51 "_mcount:;" \ 52 ".set noreorder;" \ 53 ".set noat;" \ 54 ".cpload $25;" \ 55 ".cprestore 4;" \ 56 "sw $4,8($29);" \ 57 "sw $5,12($29);" \ 58 "sw $6,16($29);" \ 59 "sw $7,20($29);" \ 60 "sw $1,0($29);" \ 61 "sw $31,4($29);" \ 62 "move $5,$31;" \ 63 "jal ___mcount;" \ 64 "move $4,$1;" \ 65 "lw $4,8($29);" \ 66 "lw $5,12($29);" \ 67 "lw $6,16($29);" \ 68 "lw $7,20($29);" \ 69 "lw $31,4($29);" \ 70 "lw $1,0($29);" \ 71 "addu $29,$29,8;" \ 72 "j $31;" \ 73 "move $31,$1;" \ 74 ".set reorder;" \ 75 ".set at"); 76 77 #ifdef _KERNEL 78 /* 79 * The following two macros do splhigh and splx respectively. 80 * They have to be defined this way because these are real 81 * functions on the MIPS, and we do not want to invoke mcount 82 * recursively. 83 */ 84 85 #define MCOUNT_DECL(s) u_long s; 86 #ifdef SMP 87 extern int mcount_lock; 88 #define MCOUNT_ENTER(s) { \ 89 s = intr_disable(); \ 90 while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1)) \ 91 /* nothing */ ; \ 92 } 93 #define MCOUNT_EXIT(s) { \ 94 atomic_store_rel_int(&mcount_lock, 0); \ 95 intr_restore(s); \ 96 } 97 #else 98 #define MCOUNT_ENTER(s) { s = intr_disable(); } 99 #define MCOUNT_EXIT(s) (intr_restore(s)) 100 #endif 101 102 /* REVISIT for mips */ 103 /* 104 * Config generates something to tell the compiler to align functions on 16 105 * byte boundaries. A strict alignment is good for keeping the tables small. 106 */ 107 #define FUNCTION_ALIGNMENT 16 108 109 #ifdef GUPROF 110 struct gmonparam; 111 void stopguprof __P((struct gmonparam *p)); 112 #else 113 #define stopguprof(p) 114 #endif /* GUPROF */ 115 116 #else /* !_KERNEL */ 117 118 #define FUNCTION_ALIGNMENT 4 119 120 #ifdef __mips_n64 121 typedef u_long uintfptr_t; 122 #else 123 typedef u_int uintfptr_t; 124 #endif 125 126 #endif /* _KERNEL */ 127 128 /* 129 * An unsigned integral type that can hold non-negative difference between 130 * function pointers. 131 */ 132 #ifdef __mips_n64 133 typedef u_long fptrdiff_t; 134 #else 135 typedef u_int fptrdiff_t; 136 #endif 137 138 #ifdef _KERNEL 139 140 void mcount(uintfptr_t frompc, uintfptr_t selfpc); 141 142 #ifdef GUPROF 143 struct gmonparam; 144 145 void nullfunc_loop_profiled(void); 146 void nullfunc_profiled(void); 147 void startguprof(struct gmonparam *p); 148 void stopguprof(struct gmonparam *p); 149 #else 150 #define startguprof(p) 151 #define stopguprof(p) 152 #endif /* GUPROF */ 153 154 #else /* !_KERNEL */ 155 156 #include <sys/cdefs.h> 157 158 __BEGIN_DECLS 159 #ifdef __GNUC__ 160 #ifdef __ELF__ 161 void mcount(void) __asm(".mcount"); 162 #else 163 void mcount(void) __asm("mcount"); 164 #endif 165 #endif 166 void _mcount(uintfptr_t frompc, uintfptr_t selfpc); 167 __END_DECLS 168 169 #endif /* _KERNEL */ 170 171 #ifdef GUPROF 172 /* XXX doesn't quite work outside kernel yet. */ 173 extern int cputime_bias; 174 175 __BEGIN_DECLS 176 int cputime(void); 177 void empty_loop(void); 178 void mexitcount(uintfptr_t selfpc); 179 void nullfunc(void); 180 void nullfunc_loop(void); 181 __END_DECLS 182 #endif 183 184 #endif /* !_MACHINE_PROFILE_H_ */ 185