1 /* $OpenBSD: profile.h,v 1.2 1999/01/27 04:46:05 imp Exp $ */ 2 /*- 3 * Copyright (c) 1992, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Ralph Campbell. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * from: @(#)profile.h 8.1 (Berkeley) 6/10/93 34 * JNPR: profile.h,v 1.4 2006/12/02 09:53:41 katta 35 * $FreeBSD$ 36 */ 37 #ifndef _MACHINE_PROFILE_H_ 38 #define _MACHINE_PROFILE_H_ 39 40 #define _MCOUNT_DECL void ___mcount 41 42 /*XXX The cprestore instruction is a "dummy" to shut up as(1). */ 43 44 /*XXX This is not MIPS64 safe. */ 45 46 #define MCOUNT \ 47 __asm(".text;" \ 48 ".globl _mcount;" \ 49 ".type _mcount,@function;" \ 50 "_mcount:;" \ 51 ".set noreorder;" \ 52 ".set noat;" \ 53 ".cpload $25;" \ 54 ".cprestore 4;" \ 55 "sw $4,8($29);" \ 56 "sw $5,12($29);" \ 57 "sw $6,16($29);" \ 58 "sw $7,20($29);" \ 59 "sw $1,0($29);" \ 60 "sw $31,4($29);" \ 61 "move $5,$31;" \ 62 "jal ___mcount;" \ 63 "move $4,$1;" \ 64 "lw $4,8($29);" \ 65 "lw $5,12($29);" \ 66 "lw $6,16($29);" \ 67 "lw $7,20($29);" \ 68 "lw $31,4($29);" \ 69 "lw $1,0($29);" \ 70 "addu $29,$29,8;" \ 71 "j $31;" \ 72 "move $31,$1;" \ 73 ".set reorder;" \ 74 ".set at"); 75 76 #ifdef _KERNEL 77 /* 78 * The following two macros do splhigh and splx respectively. 79 * They have to be defined this way because these are real 80 * functions on the MIPS, and we do not want to invoke mcount 81 * recursively. 82 */ 83 84 #define MCOUNT_DECL(s) u_long s; 85 #ifdef SMP 86 extern int mcount_lock; 87 #define MCOUNT_ENTER(s) { \ 88 s = intr_disable(); \ 89 while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1)) \ 90 /* nothing */ ; \ 91 } 92 #define MCOUNT_EXIT(s) { \ 93 atomic_store_rel_int(&mcount_lock, 0); \ 94 intr_restore(s); \ 95 } 96 #else 97 #define MCOUNT_ENTER(s) { s = intr_disable(); } 98 #define MCOUNT_EXIT(s) (intr_restore(s)) 99 #endif 100 101 /* REVISIT for mips */ 102 /* 103 * Config generates something to tell the compiler to align functions on 16 104 * byte boundaries. A strict alignment is good for keeping the tables small. 105 */ 106 #define FUNCTION_ALIGNMENT 16 107 108 #ifdef GUPROF 109 struct gmonparam; 110 void stopguprof __P((struct gmonparam *p)); 111 #else 112 #define stopguprof(p) 113 #endif /* GUPROF */ 114 115 #else /* !_KERNEL */ 116 117 #define FUNCTION_ALIGNMENT 4 118 119 #ifdef __mips_n64 120 typedef u_long uintfptr_t; 121 #else 122 typedef u_int uintfptr_t; 123 #endif 124 125 #endif /* _KERNEL */ 126 127 /* 128 * An unsigned integral type that can hold non-negative difference between 129 * function pointers. 130 */ 131 #ifdef __mips_n64 132 typedef u_long fptrdiff_t; 133 #else 134 typedef u_int fptrdiff_t; 135 #endif 136 137 #ifdef _KERNEL 138 139 void mcount(uintfptr_t frompc, uintfptr_t selfpc); 140 141 #ifdef GUPROF 142 struct gmonparam; 143 144 void nullfunc_loop_profiled(void); 145 void nullfunc_profiled(void); 146 void startguprof(struct gmonparam *p); 147 void stopguprof(struct gmonparam *p); 148 #else 149 #define startguprof(p) 150 #define stopguprof(p) 151 #endif /* GUPROF */ 152 153 #else /* !_KERNEL */ 154 155 #include <sys/cdefs.h> 156 157 __BEGIN_DECLS 158 #ifdef __GNUC__ 159 #ifdef __ELF__ 160 void mcount(void) __asm(".mcount"); 161 #else 162 void mcount(void) __asm("mcount"); 163 #endif 164 #endif 165 void _mcount(uintfptr_t frompc, uintfptr_t selfpc); 166 __END_DECLS 167 168 #endif /* _KERNEL */ 169 170 #ifdef GUPROF 171 /* XXX doesn't quite work outside kernel yet. */ 172 extern int cputime_bias; 173 174 __BEGIN_DECLS 175 int cputime(void); 176 void empty_loop(void); 177 void mexitcount(uintfptr_t selfpc); 178 void nullfunc(void); 179 void nullfunc_loop(void); 180 __END_DECLS 181 #endif 182 183 #endif /* !_MACHINE_PROFILE_H_ */ 184