xref: /netbsd-src/sys/compat/linux/arch/powerpc/linux_exec.h (revision deb6f0161a9109e7de9b519dc8dfb9478668dcdd)
1 /*	$NetBSD: linux_exec.h,v 1.24 2017/02/12 21:02:19 chs Exp $  */
2 
3 /*-
4  * Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Emmanuel Dreyfus.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #ifndef _POWERPC_LINUX_EXEC_H
33 #define _POWERPC_LINUX_EXEC_H
34 
35 #include <sys/exec_aout.h>
36 #include <sys/exec_elf.h>
37 #include <sys/types.h>
38 
39 /*
40  * From Linux's include/asm-ppc/elf.h
41  */
42 #define LINUX_ELF_HWCAP (0)
43 
44 /*
45  * From Linux's include/asm-ppc/param.h
46  */
47 # define LINUX_CLOCKS_PER_SEC 100	/* frequency at which times() counts */
48 
49 /*
50  * Linux a.out format parameters
51  */
52 #define LINUX_M_POWERPC		MID_POWERPC
53 #define LINUX_MID_MACHINE	LINUX_M_POWERPC
54 
55 /*
56  * Linux Elf32 format parameters
57  */
58 
59 #define LINUX_GCC_SIGNATURE 1
60 /*
61  * LINUX_ATEXIT_SIGNATURE enable the atexit_signature test. See
62  * sys/compat/linux/common/linux_exec_elf32.c:linux_atexit_signature()
63  */
64 #define LINUX_ATEXIT_SIGNATURE	1
65 
66 /*
67  * LINUX_SHIFT enable the 16 bytes shift for arguments and ELF auxiliary
68  * table. This is needed on the PowerPC
69  */
70 #define LINUX_SHIFT 0x0000000FUL
71 
72 /*
73  * Entries in the ELF auxiliary table. This is counted from
74  * sys/compat/linux/arc/powerpc/linux_exec_powerpc.c
75  */
76 #define LINUX_ELF_AUX_ENTRIES 14
77 
78 /*
79  * Size of the auxiliary ELF table. On the PowerPC we need 16 extra bytes
80  * in order to force an alignment on a 16 bytes boundary (this is expected
81  * by PowerPC GNU ld.so).
82  */
83 #define LINUX_ELF_AUX_ARGSIZ \
84 	(LINUX_ELF_AUX_ENTRIES * sizeof(Aux32Info) + LINUX_RANDOM_BYTES + 16)
85 
86 /* we have special powerpc ELF copyargs */
87 #define LINUX_MACHDEP_ELF_COPYARGS
88 
89 #define linux_exec_setup_stack	exec_setup_stack
90 
91 #endif /* !_POWERPC_LINUX_EXEC_H */
92