|
1 /* $NetBSD: profile.h,v 1.6 1995/03/28 18:17:08 jtc Exp $ */ |
|
2 |
|
3 /* |
|
4 * Copyright (c) 1992, 1993 |
|
5 * The Regents of the University of California. All rights reserved. |
|
6 * |
|
7 * Redistribution and use in source and binary forms, with or without |
|
8 * modification, are permitted provided that the following conditions |
|
9 * are met: |
|
10 * 1. Redistributions of source code must retain the above copyright |
|
11 * notice, this list of conditions and the following disclaimer. |
|
12 * 2. Redistributions in binary form must reproduce the above copyright |
|
13 * notice, this list of conditions and the following disclaimer in the |
|
14 * documentation and/or other materials provided with the distribution. |
|
15 * 3. All advertising materials mentioning features or use of this software |
|
16 * must display the following acknowledgement: |
|
17 * This product includes software developed by the University of |
|
18 * California, Berkeley and its contributors. |
|
19 * 4. 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 * @(#)profile.h 8.1 (Berkeley) 6/11/93 |
|
36 */ |
|
37 |
|
38 /* |
|
39 * This file is taken from Cygwin distribution. Please keep it in sync. |
|
40 * The differences should be within __MINGW32__ guard. |
|
41 */ |
|
42 /* If compiler doesn't inline, at least avoid passing args on the stack. */ |
|
43 #define _MCOUNT_CALL __attribute__ ((regparm (2))) |
|
44 #define _MCOUNT_DECL static __inline__ void _MCOUNT_CALL _mcount |
|
45 |
|
46 /* FIXME: This works, but it would be cleaner to convert mcount into an |
|
47 assembler stub that calls an extern _mcount. |
|
48 Older versions of GCC (pre-4.1) will still fail with regparm since the |
|
49 compiler used %edx to store an unneeded counter variable. */ |
|
50 |
|
51 #define MCOUNT \ |
|
52 void \ |
|
53 mcount() \ |
|
54 { \ |
|
55 u_long selfpc, frompcindex; \ |
|
56 /* \ |
|
57 * Save registers, since this may be called from \ |
|
58 * the prologue of a regparm function. \ |
|
59 */ \ |
|
60 __asm __volatile__ ("pushl %eax\n\t" \ |
|
61 "pushl %ecx\n\t" \ |
|
62 "pushl %edx"); \ |
|
63 /* \ |
|
64 * find the return address for mcount, \ |
|
65 * and the return address for mcount's caller. \ |
|
66 * \ |
|
67 * selfpc = pc pushed by mcount call \ |
|
68 */ \ |
|
69 /* __asm ("movl 4(%%ebp),%0" : "=r" (selfpc)); */ \ |
|
70 selfpc = (u_long) __builtin_return_address (0); \ |
|
71 /* \ |
|
72 * frompcindex = pc pushed by call into self. \ |
|
73 */ \ |
|
74 /* __asm ("movl (%%ebp),%0;movl 4(%0),%0" : "=r" (frompcindex)); */ \ |
|
75 frompcindex = (u_long) __builtin_return_address (1); \ |
|
76 _mcount(frompcindex, selfpc); \ |
|
77 /* \ |
|
78 * Restore registers. \ |
|
79 */ \ |
|
80 __asm __volatile__ ("popl %edx\n\t" \ |
|
81 "popl %ecx\n\t" \ |
|
82 "popl %eax"); \ |
|
83 } |