| [1046] | 1 | /* $NetBSD: profile.h,v 1.6 1995/03/28 18:17:08 jtc Exp $ */
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| 2 |
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| 3 | /*
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| 4 | * Copyright (c) 1992, 1993
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| 5 | * The Regents of the University of California. All rights reserved.
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| 6 | *
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| 7 | * Redistribution and use in source and binary forms, with or without
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| 8 | * modification, are permitted provided that the following conditions
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| 9 | * are met:
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * 2. Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | * 3. All advertising materials mentioning features or use of this software
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| 16 | * must display the following acknowledgement:
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| 17 | * This product includes software developed by the University of
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| 18 | * California, Berkeley and its contributors.
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| 19 | * 4. Neither the name of the University nor the names of its contributors
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| 20 | * may be used to endorse or promote products derived from this software
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| 21 | * without specific prior written permission.
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| 22 | *
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| 23 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 24 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 29 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 31 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 32 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 33 | * SUCH DAMAGE.
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| 34 | *
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| 35 | * @(#)profile.h 8.1 (Berkeley) 6/11/93
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| 36 | */
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| 37 |
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| 38 | /*
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| 39 | * This file is taken from Cygwin distribution. Please keep it in sync.
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| 40 | * The differences should be within __MINGW32__ guard.
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| 41 | */
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| 42 | /* If compiler doesn't inline, at least avoid passing args on the stack. */
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| 43 | #define _MCOUNT_CALL __attribute__ ((regparm (2)))
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| 44 | #define _MCOUNT_DECL static __inline__ void _MCOUNT_CALL _mcount
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| 45 |
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| 46 | /* FIXME: This works, but it would be cleaner to convert mcount into an
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| 47 | assembler stub that calls an extern _mcount.
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| 48 | Older versions of GCC (pre-4.1) will still fail with regparm since the
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| 49 | compiler used %edx to store an unneeded counter variable. */
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| 50 |
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| 51 | #define MCOUNT \
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| 52 | void \
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| 53 | mcount() \
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| 54 | { \
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| 55 | u_long selfpc, frompcindex; \
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| 56 | /* \
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| 57 | * Save registers, since this may be called from \
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| 58 | * the prologue of a regparm function. \
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| 59 | */ \
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| 60 | __asm __volatile__ ("pushl %eax\n\t" \
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| 61 | "pushl %ecx\n\t" \
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| 62 | "pushl %edx"); \
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| 63 | /* \
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| 64 | * find the return address for mcount, \
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| 65 | * and the return address for mcount's caller. \
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| 66 | * \
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| 67 | * selfpc = pc pushed by mcount call \
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| 68 | */ \
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| 69 | /* __asm ("movl 4(%%ebp),%0" : "=r" (selfpc)); */ \
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| 70 | selfpc = (u_long) __builtin_return_address (0); \
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| 71 | /* \
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| 72 | * frompcindex = pc pushed by call into self. \
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| 73 | */ \
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| 74 | /* __asm ("movl (%%ebp),%0;movl 4(%0),%0" : "=r" (frompcindex)); */ \
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| 75 | frompcindex = (u_long) __builtin_return_address (1); \
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| 76 | _mcount(frompcindex, selfpc); \
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| 77 | /* \
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| 78 | * Restore registers. \
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| 79 | */ \
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| 80 | __asm __volatile__ ("popl %edx\n\t" \
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| 81 | "popl %ecx\n\t" \
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| 82 | "popl %eax"); \
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| 83 | }
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