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Annotation of sys/arch/sparc/include/profile.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: profile.h,v 1.8 2003/06/02 23:27:54 millert Exp $     */
                      2: /*     $NetBSD: profile.h,v 1.8 1997/02/01 20:56:40 mrg Exp $ */
                      3:
                      4: /*
                      5:  * Copyright (c) 1992, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * This software was developed by the Computer Systems Engineering group
                      9:  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
                     10:  * contributed to Berkeley.
                     11:  *
                     12:  * All advertising materials mentioning features or use of this software
                     13:  * must display the following acknowledgement:
                     14:  *     This product includes software developed by the University of
                     15:  *     California, Lawrence Berkeley Laboratory.
                     16:  *
                     17:  * Redistribution and use in source and binary forms, with or without
                     18:  * modification, are permitted provided that the following conditions
                     19:  * are met:
                     20:  * 1. Redistributions of source code must retain the above copyright
                     21:  *    notice, this list of conditions and the following disclaimer.
                     22:  * 2. Redistributions in binary form must reproduce the above copyright
                     23:  *    notice, this list of conditions and the following disclaimer in the
                     24:  *    documentation and/or other materials provided with the distribution.
                     25:  * 3. Neither the name of the University nor the names of its contributors
                     26:  *    may be used to endorse or promote products derived from this software
                     27:  *    without specific prior written permission.
                     28:  *
                     29:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     30:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     31:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     32:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     33:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     34:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     35:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     36:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     37:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     38:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     39:  * SUCH DAMAGE.
                     40:  *
                     41:  *     @(#)profile.h   8.1 (Berkeley) 6/11/93
                     42:  */
                     43:
                     44: /*
                     45:  * Can't use _C_LABEL here.
                     46:  */
                     47:
                     48: #ifdef __ELF__
                     49: #define _MCOUNT_SYM "__mcount"
                     50: #define _MCOUNT_ENTRY "_mcount"
                     51: #else
                     52: #define _MCOUNT_SYM "___mcount"
                     53: #define _MCOUNT_ENTRY "mcount"
                     54: #endif
                     55:
                     56: #ifdef PIC
                     57: /* Inline expansion of PICCY_SET() (see <machine/asm.h>). */
                     58: #define MCOUNT \
                     59:        __asm__(".global " _MCOUNT_ENTRY);\
                     60:        __asm__(".text");\
                     61:        __asm__(_MCOUNT_ENTRY ":");\
                     62:        __asm__("add %o7, 8, %o1");\
                     63:        __asm__("1: call 2f; nop; 2:");\
                     64:        __asm__("add %o7," _MCOUNT_SYM "-1b, %o2");\
                     65:        __asm__("ld [%o2], %o2");\
                     66:        __asm__("jmpl %o2, %g0");\
                     67:        __asm__("add %i7, 8, %o0");
                     68: #else
                     69: #define MCOUNT \
                     70:        __asm__(".global " _MCOUNT_ENTRY);\
                     71:        __asm__(".text");\
                     72:        __asm__(_MCOUNT_ENTRY ":");\
                     73:        __asm__("add %i7, 8, %o0");\
                     74:        __asm__("sethi %hi(" _MCOUNT_SYM "), %o2");\
                     75:        __asm__("jmpl %o2 + %lo(" _MCOUNT_SYM "), %g0");\
                     76:        __asm__("add %o7, 8, %o1");
                     77: #endif
                     78:
                     79: #define        _MCOUNT_DECL    static void __mcount
                     80:
                     81: #ifdef _KERNEL
                     82: /*
                     83:  * Block interrupts during mcount so that those interrupts can also be
                     84:  * counted (as soon as we get done with the current counting).  On the
                     85:  * SPARC, we just splhigh/splx as those do not recursively invoke mcount.
                     86:  */
                     87: #define        MCOUNT_ENTER    s = splhigh()
                     88: #define        MCOUNT_EXIT     splx(s)
                     89: #endif /* _KERNEL */