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linux_exec.h revision 1.42
      1 /*	$NetBSD: linux_exec.h,v 1.42 2007/12/04 18:40:15 dsl Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Frank van der Linden and Eric Haszlakiewicz.
      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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _LINUX_EXEC_H
     40 #define _LINUX_EXEC_H
     41 
     42 #if defined(EXEC_ELF32) || defined(EXEC_ELF64)
     43 #include <sys/exec_elf.h>
     44 #endif
     45 
     46 #if defined(__i386__)
     47 #include <compat/linux/arch/i386/linux_exec.h>
     48 #elif defined(__m68k__)
     49 #include <compat/linux/arch/m68k/linux_exec.h>
     50 #elif defined(__alpha__)
     51 #include <compat/linux/arch/alpha/linux_exec.h>
     52 #elif defined(__powerpc__)
     53 #include <compat/linux/arch/powerpc/linux_exec.h>
     54 #elif defined(__mips__)
     55 #include <compat/linux/arch/mips/linux_exec.h>
     56 #elif defined(__arm__)
     57 #include <compat/linux/arch/arm/linux_exec.h>
     58 #elif defined(__amd64__)
     59 #include <compat/linux/arch/amd64/linux_exec.h>
     60 #endif
     61 
     62 
     63 /* Defines for a.out executables */
     64 #define LINUX_AOUT_HDR_SIZE (sizeof (struct exec))
     65 #define	LINUX_AOUT_AUX_ARGSIZ	2
     66 
     67 #define LINUX_N_MAGIC(ep)    ((ep)->a_midmag & 0xffff)
     68 #define LINUX_N_MACHTYPE(ep) (((ep)->a_midmag >> 16) & 0xff)
     69 
     70 #define LINUX_N_TXTOFF(x,m) \
     71  ((m) == ZMAGIC ? 1024 : ((m) == QMAGIC ? 0 : sizeof (struct exec)))
     72 
     73 #define LINUX_N_DATOFF(x,m) (LINUX_N_TXTOFF(x,m) + (x).a_text)
     74 
     75 #define LINUX_N_TXTADDR(x,m) ((m) == QMAGIC ? PAGE_SIZE : 0)
     76 
     77 #define LINUX__N_SEGMENT_ROUND(x) (((x) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))
     78 
     79 #define LINUX__N_TXTENDADDR(x,m) (LINUX_N_TXTADDR(x,m)+(x).a_text)
     80 
     81 #define LINUX_N_DATADDR(x,m) \
     82     ((m)==OMAGIC? (LINUX__N_TXTENDADDR(x,m)) \
     83      : (LINUX__N_SEGMENT_ROUND (LINUX__N_TXTENDADDR(x,m))))
     84 
     85 #define LINUX_N_BSSADDR(x,m) (LINUX_N_DATADDR(x,m) + (x).a_data)
     86 
     87 #ifndef LINUX_MACHDEP_ELF_COPYARGS
     88 #define LINUX_ELF_AUX_ENTRIES	13	/* we push 13 parameters */
     89 #endif
     90 
     91 /*
     92  * From Linux's include/linux/elf.h
     93  */
     94 #define LINUX_AT_UID		11	/* real uid */
     95 #define LINUX_AT_EUID		12	/* effective uid */
     96 #define LINUX_AT_GID		13	/* real gid */
     97 #define LINUX_AT_EGID		14	/* effective gid */
     98 #define LINUX_AT_PLATFORM	15	/* CPU string for optimizations */
     99 #define LINUX_AT_HWCAP		16	/* arch dependent CPU capabilities */
    100 #define LINUX_AT_CLKTCK		17	/* frequency times() increments */
    101 #define LINUX_AT_SECURE		23	/* secure mode boolean */
    102 #define LINUX_AT_SYSINFO	32	/* pointer to __kernel_vsyscall */
    103 #define LINUX_AT_SYSINFO_EHDR	33	/* pointer to ELF header */
    104 
    105 /*
    106  * Emulation specific sysctls.
    107  */
    108 #define EMUL_LINUX_KERN			1
    109 #define EMUL_LINUX_MAXID		2
    110 
    111 #define EMUL_LINUX_NAMES { \
    112 	{ 0, 0 }, \
    113 	{ "kern", CTLTYPE_NODE }, \
    114 }
    115 
    116 #define EMUL_LINUX_KERN_OSTYPE		1
    117 #define EMUL_LINUX_KERN_OSRELEASE	2
    118 #define EMUL_LINUX_KERN_VERSION		3
    119 #define EMUL_LINUX_KERN_MAXID		4
    120 
    121 #define EMUL_LINUX_KERN_NAMES { \
    122 	{ 0, 0 }, \
    123 	{ "ostype", CTLTYPE_STRING }, \
    124 	{ "osrelease", CTLTYPE_STRING }, \
    125 	{ "osversion", CTLTYPE_STRING }, \
    126 }
    127 
    128 #ifdef _KERNEL
    129 __BEGIN_DECLS
    130 extern const struct emul emul_linux;
    131 
    132 int linux_sysctl(int *, u_int, void *, size_t *, void *, size_t,
    133     struct lwp *);
    134 void linux_setregs(struct lwp *, struct exec_package *, u_long);
    135 int exec_linux_aout_makecmds(struct lwp *, struct exec_package *);
    136 int linux_aout_copyargs(struct lwp *, struct exec_package *,
    137     struct ps_strings *, char **, void *);
    138 void linux_trapsignal(struct lwp *, ksiginfo_t *);
    139 int linux_usertrap(struct lwp *, vaddr_t, void *);
    140 #ifdef LINUX_NPTL
    141 void linux_nptl_proc_fork(struct proc *, struct proc *, void (luserret)(void));
    142 void linux_nptl_proc_exit(struct proc *);
    143 void linux_nptl_proc_init(struct proc *, struct proc *);
    144 #endif
    145 
    146 #ifdef EXEC_ELF32
    147 int linux_elf32_probe(struct lwp *, struct exec_package *, void *,
    148     char *, vaddr_t *);
    149 int linux_elf32_copyargs(struct lwp *, struct exec_package *,
    150     struct ps_strings *, char **, void *);
    151 int linux_elf32_signature(struct lwp *, struct exec_package *,
    152         Elf32_Ehdr *, char *);
    153 #ifdef LINUX_GCC_SIGNATURE
    154 int linux_elf32_gcc_signature(struct lwp *l,
    155         struct exec_package *, Elf32_Ehdr *);
    156 #endif
    157 #ifdef LINUX_DEBUGLINK_SIGNATURE
    158 int linux_elf32_debuglink_signature(struct lwp *l,
    159         struct exec_package *, Elf32_Ehdr *);
    160 #endif
    161 #ifdef LINUX_ATEXIT_SIGNATURE
    162 int linux_elf32_atexit_signature(struct lwp *l,
    163         struct exec_package *, Elf32_Ehdr *);
    164 #endif
    165 #endif
    166 #ifdef EXEC_ELF64
    167 int linux_elf64_probe(struct lwp *, struct exec_package *, void *,
    168     char *, vaddr_t *);
    169 int linux_elf64_copyargs(struct lwp *, struct exec_package *,
    170     struct ps_strings *, char **, void *);
    171 int linux_elf64_signature(struct lwp *, struct exec_package *,
    172         Elf64_Ehdr *, char *);
    173 #ifdef LINUX_GCC_SIGNATURE
    174 int linux_elf64_gcc_signature(struct lwp *l,
    175         struct exec_package *, Elf64_Ehdr *);
    176 #endif
    177 #ifdef LINUX_DEBUGLINK_SIGNATURE
    178 int linux_elf64_debuglink_signature(struct lwp *l,
    179         struct exec_package *, Elf64_Ehdr *);
    180 #endif
    181 #ifdef LINUX_ATEXIT_SIGNATURE
    182 int linux_elf64_atexit_signature(struct lwp *l,
    183         struct exec_package *, Elf64_Ehdr *);
    184 #endif
    185 #endif
    186 __END_DECLS
    187 #endif /* !_KERNEL */
    188 
    189 #endif /* !_LINUX_EXEC_H */
    190