Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/mips/include/profile.h
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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: releng/8.0/sys/mips/include/profile.h 178172 2008-04-13 07:27:37Z imp $ 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 #define MCOUNT \ 45 __asm(".globl _mcount;" \ 46 ".type _mcount,@function;" \ 47 "_mcount:;" \ 48 ".set noreorder;" \ 49 ".set noat;" \ 50 ".cpload $25;" \ 51 ".cprestore 4;" \ 52 "sw $4,8($29);" \ 53 "sw $5,12($29);" \ 54 "sw $6,16($29);" \ 55 "sw $7,20($29);" \ 56 "sw $1,0($29);" \ 57 "sw $31,4($29);" \ 58 "move $5,$31;" \ 59 "jal ___mcount;" \ 60 "move $4,$1;" \ 61 "lw $4,8($29);" \ 62 "lw $5,12($29);" \ 63 "lw $6,16($29);" \ 64 "lw $7,20($29);" \ 65 "lw $31,4($29);" \ 66 "lw $1,0($29);" \ 67 "addu $29,$29,8;" \ 68 "j $31;" \ 69 "move $31,$1;" \ 70 ".set reorder;" \ 71 ".set at"); 72 73 #ifdef _KERNEL 74 /* 75 * The following two macros do splhigh and splx respectively. 76 * They have to be defined this way because these are real 77 * functions on the MIPS, and we do not want to invoke mcount 78 * recursively. 79 */ 80 81 #define MCOUNT_DECL(s) u_long s; 82 #ifdef SMP 83 extern int mcount_lock; 84 #define MCOUNT_ENTER(s) { \ 85 s = disable_intr(); \ 86 while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1)) \ 87 /* nothing */ ; \ 88 } 89 #define MCOUNT_EXIT(s) { \ 90 atomic_store_rel_int(&mcount_lock, 0); \ 91 enableintr(s); \ 92 } 93 #else 94 #define MCOUNT_ENTER(s) { s = disable_intr(); } 95 #define MCOUNT_EXIT(s) (enableintr(s)) 96 #endif 97 98 /* REVISIT for mips */ 99 /* 100 * Config generates something to tell the compiler to align functions on 16 101 * byte boundaries. A strict alignment is good for keeping the tables small. 102 */ 103 #define FUNCTION_ALIGNMENT 16 104 105 #ifdef GUPROF 106 struct gmonparam; 107 void stopguprof __P((struct gmonparam *p)); 108 #else 109 #define stopguprof(p) 110 #endif /* GUPROF */ 111 112 #else /* !_KERNEL */ 113 114 #define FUNCTION_ALIGNMENT 4 115 116 typedef unsigned int uintfptr_t; 117 118 #endif /* _KERNEL */ 119 120 /* 121 * An unsigned integral type that can hold non-negative difference between 122 * function pointers. 123 */ 124 typedef u_int fptrdiff_t; 125 126 #ifdef _KERNEL 127 128 void mcount(uintfptr_t frompc, uintfptr_t selfpc); 129 130 #ifdef GUPROF 131 struct gmonparam; 132 133 void nullfunc_loop_profiled(void); 134 void nullfunc_profiled(void); 135 void startguprof(struct gmonparam *p); 136 void stopguprof(struct gmonparam *p); 137 #else 138 #define startguprof(p) 139 #define stopguprof(p) 140 #endif /* GUPROF */ 141 142 #else /* !_KERNEL */ 143 144 #include <sys/cdefs.h> 145 146 __BEGIN_DECLS 147 #ifdef __GNUC__ 148 #ifdef __ELF__ 149 void mcount(void) __asm(".mcount"); 150 #else 151 void mcount(void) __asm("mcount"); 152 #endif 153 #endif 154 void _mcount(uintfptr_t frompc, uintfptr_t selfpc); 155 __END_DECLS 156 157 #endif /* _KERNEL */ 158 159 #ifdef GUPROF 160 /* XXX doesn't quite work outside kernel yet. */ 161 extern int cputime_bias; 162 163 __BEGIN_DECLS 164 int cputime(void); 165 void empty_loop(void); 166 void mexitcount(uintfptr_t selfpc); 167 void nullfunc(void); 168 void nullfunc_loop(void); 169 __END_DECLS 170 #endif 171 172 #endif /* !_MACHINE_PROFILE_H_ */
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