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      1 /*	$NetBSD: linux_exec.h,v 1.55 2021/11/26 08:56:28 ryo 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  *
     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 _LINUX_EXEC_H
     33 #define _LINUX_EXEC_H
     34 
     35 #if defined(EXEC_AOUT)
     36 #include <sys/exec_aout.h>
     37 #endif
     38 
     39 #if defined(EXEC_ELF32) || defined(EXEC_ELF64)
     40 #include <sys/exec_elf.h>
     41 #endif
     42 
     43 #if defined(__i386__)
     44 #include <compat/linux/arch/i386/linux_exec.h>
     45 #elif defined(__m68k__)
     46 #include <compat/linux/arch/m68k/linux_exec.h>
     47 #elif defined(__alpha__)
     48 #include <compat/linux/arch/alpha/linux_exec.h>
     49 #elif defined(__powerpc__)
     50 #include <compat/linux/arch/powerpc/linux_exec.h>
     51 #elif defined(__mips__)
     52 #include <compat/linux/arch/mips/linux_exec.h>
     53 #elif defined(__aarch64__)
     54 #include <compat/linux/arch/aarch64/linux_exec.h>
     55 #elif defined(__arm__)
     56 #include <compat/linux/arch/arm/linux_exec.h>
     57 #elif defined(__amd64__)
     58 #include <compat/linux/arch/amd64/linux_exec.h>
     59 #endif
     60 
     61 
     62 /* Defines for a.out executables */
     63 #define LINUX_AOUT_HDR_SIZE (sizeof (struct exec))
     64 #define	LINUX_AOUT_AUX_ARGSIZ	8
     65 
     66 #define LINUX_N_MAGIC(ep)    ((ep)->a_midmag & 0xffff)
     67 #define LINUX_N_MACHTYPE(ep) (((ep)->a_midmag >> 16) & 0xff)
     68 
     69 #define LINUX_N_TXTOFF(x,m) \
     70  ((m) == ZMAGIC ? 1024 : ((m) == QMAGIC ? 0 : sizeof (struct exec)))
     71 
     72 #define LINUX_N_DATOFF(x,m) (LINUX_N_TXTOFF(x,m) + (x).a_text)
     73 
     74 #define LINUX_N_TXTADDR(x,m) ((m) == QMAGIC ? PAGE_SIZE : 0)
     75 
     76 #define LINUX__N_SEGMENT_ROUND(x) (((x) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))
     77 
     78 #define LINUX__N_TXTENDADDR(x,m) (LINUX_N_TXTADDR(x,m)+(x).a_text)
     79 
     80 #define LINUX_N_DATADDR(x,m) \
     81     ((m)==OMAGIC? (LINUX__N_TXTENDADDR(x,m)) \
     82      : (LINUX__N_SEGMENT_ROUND (LINUX__N_TXTENDADDR(x,m))))
     83 
     84 #define LINUX_N_BSSADDR(x,m) (LINUX_N_DATADDR(x,m) + (x).a_data)
     85 
     86 #ifndef LINUX_MACHDEP_ELF_COPYARGS
     87 /* Counted from linux_exec_elf32.c */
     88 #define LINUX_ELF_AUX_ENTRIES	14
     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_RANDOM		25	/* address of 16 random bytes */
    103 #define LINUX_AT_SYSINFO	32	/* pointer to __kernel_vsyscall */
    104 #define LINUX_AT_SYSINFO_EHDR	33	/* pointer to ELF header */
    105 
    106 #define LINUX_RANDOM_BYTES	16	/* 16 bytes for AT_RANDOM */
    107 
    108 /*
    109  * Emulation specific sysctls.
    110  */
    111 #define EMUL_LINUX_KERN			1
    112 
    113 #define EMUL_LINUX_KERN_OSTYPE		1
    114 #define EMUL_LINUX_KERN_OSRELEASE	2
    115 #define EMUL_LINUX_KERN_VERSION		3
    116 
    117 #ifdef _KERNEL
    118 __BEGIN_DECLS
    119 extern struct emul emul_linux;
    120 
    121 int linux_sysctl(int *, u_int, void *, size_t *, void *, size_t,
    122     struct lwp *);
    123 void linux_setregs(struct lwp *, struct exec_package *, vaddr_t);
    124 #ifdef EXEC_AOUT
    125 int exec_linux_aout_makecmds(struct lwp *, struct exec_package *);
    126 int linux_aout_copyargs(struct lwp *, struct exec_package *,
    127     struct ps_strings *, char **, void *);
    128 #endif
    129 void linux_trapsignal(struct lwp *, ksiginfo_t *);
    130 int linux_usertrap(struct lwp *, vaddr_t, void *);
    131 int linux_lwp_setprivate(struct lwp *, void *);
    132 
    133 void linux_e_proc_exec(struct proc *, struct exec_package *);
    134 void linux_e_proc_fork(struct proc *, struct lwp *, int);
    135 void linux_e_proc_exit(struct proc *);
    136 void linux_e_lwp_fork(struct lwp *, struct lwp *);
    137 void linux_e_lwp_exit(struct lwp *);
    138 
    139 #ifdef EXEC_ELF32
    140 int linux_elf32_probe(struct lwp *, struct exec_package *, void *,
    141     char *, vaddr_t *);
    142 int linux_elf32_copyargs(struct lwp *, struct exec_package *,
    143     struct ps_strings *, char **, void *);
    144 int linux_elf32_signature(struct lwp *, struct exec_package *,
    145         Elf32_Ehdr *, char *);
    146 #ifdef LINUX_GCC_SIGNATURE
    147 int linux_elf32_gcc_signature(struct lwp *l,
    148         struct exec_package *, Elf32_Ehdr *);
    149 #endif
    150 #ifdef LINUX_DEBUGLINK_SIGNATURE
    151 int linux_elf32_debuglink_signature(struct lwp *l,
    152         struct exec_package *, Elf32_Ehdr *);
    153 #endif
    154 #ifdef LINUX_ATEXIT_SIGNATURE
    155 int linux_elf32_atexit_signature(struct lwp *l,
    156         struct exec_package *, Elf32_Ehdr *);
    157 #endif
    158 #ifdef LINUX_GO_RT0_SIGNATURE
    159 int linux_elf32_go_rt0_signature(struct lwp *l,
    160         struct exec_package *, Elf32_Ehdr *);
    161 #endif
    162 #endif
    163 #ifdef EXEC_ELF64
    164 int linux_elf64_probe(struct lwp *, struct exec_package *, void *,
    165     char *, vaddr_t *);
    166 int linux_elf64_copyargs(struct lwp *, struct exec_package *,
    167     struct ps_strings *, char **, void *);
    168 int linux_elf64_signature(struct lwp *, struct exec_package *,
    169         Elf64_Ehdr *, char *);
    170 #ifdef LINUX_GCC_SIGNATURE
    171 int linux_elf64_gcc_signature(struct lwp *l,
    172         struct exec_package *, Elf64_Ehdr *);
    173 #endif
    174 #ifdef LINUX_DEBUGLINK_SIGNATURE
    175 int linux_elf64_debuglink_signature(struct lwp *l,
    176         struct exec_package *, Elf64_Ehdr *);
    177 #endif
    178 #ifdef LINUX_ATEXIT_SIGNATURE
    179 int linux_elf64_atexit_signature(struct lwp *l,
    180         struct exec_package *, Elf64_Ehdr *);
    181 #endif
    182 #ifdef LINUX_GO_RT0_SIGNATURE
    183 int linux_elf64_go_rt0_signature(struct lwp *l,
    184         struct exec_package *, Elf64_Ehdr *);
    185 #endif
    186 #endif
    187 __END_DECLS
    188 #endif /* !_KERNEL */
    189 
    190 #endif /* !_LINUX_EXEC_H */
    191