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      1 /*	$NetBSD: netbsd32_exec.h,v 1.37 2021/11/06 20:42:56 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1998, 2001 Matthew R. Green
      5  * 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  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #ifndef	_NETBSD32_EXEC_H_
     30 #define	_NETBSD32_EXEC_H_
     31 
     32 #include <compat/netbsd32/netbsd32.h>
     33 
     34 #ifdef EXEC_AOUT
     35 #include <sys/exec_aout.h>
     36 #endif
     37 
     38 /* from <sys/exec_aout.h> */
     39 /*
     40  * Header prepended to each a.out file.
     41  * only manipulate the a_midmag field via the
     42  * N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros below.
     43  */
     44 struct netbsd32_exec {
     45 	netbsd32_u_long	a_midmag;	/* htonl(flags<<26 | mid<<16 | magic) */
     46 	netbsd32_u_long	a_text;		/* text segment size */
     47 	netbsd32_u_long	a_data;		/* initialized data size */
     48 	netbsd32_u_long	a_bss;		/* uninitialized data size */
     49 	netbsd32_u_long	a_syms;		/* symbol table size */
     50 	netbsd32_u_long	a_entry;	/* entry point */
     51 	netbsd32_u_long	a_trsize;	/* text relocation size */
     52 	netbsd32_u_long	a_drsize;	/* data relocation size */
     53 };
     54 
     55 #ifdef EXEC_AOUT
     56 int netbsd32_exec_aout_prep_zmagic(struct lwp *, struct exec_package *);
     57 int netbsd32_exec_aout_prep_nmagic(struct lwp *, struct exec_package *);
     58 int netbsd32_exec_aout_prep_omagic(struct lwp *, struct exec_package *);
     59 int exec_netbsd32_makecmds(struct lwp *, struct exec_package *);
     60 #endif
     61 #ifdef EXEC_ELF32
     62 int netbsd32_elf32_probe(struct lwp *, struct exec_package *, void *,
     63     char *, vaddr_t *);
     64 int netbsd32_elf32_probe_noteless(struct lwp *, struct exec_package *,
     65     void *, char *, vaddr_t *);
     66 int netbsd32_elf32_copyargs(struct lwp *, struct exec_package *,
     67     struct ps_strings *, char **, void *);
     68 #endif /* EXEC_ELF32 */
     69 
     70 static __inline int netbsd32_copyargs(struct lwp *, struct exec_package *,
     71     struct ps_strings *, char **, void *);
     72 
     73 void netbsd32_setregs(struct lwp *, struct exec_package *, vaddr_t stack);
     74 int netbsd32_sigreturn(struct proc *, void *, register_t *);
     75 void netbsd32_sendsig(const ksiginfo_t *, const sigset_t *);
     76 void netbsd32_sendsig_siginfo(const ksiginfo_t *, const sigset_t *);
     77 
     78 extern char netbsd32_esigcode[], netbsd32_sigcode[];
     79 
     80 /*
     81  * We need to copy out all pointers as 32-bit values.
     82  */
     83 static __inline int
     84 netbsd32_copyargs(struct lwp *l, struct exec_package *pack,
     85 		struct ps_strings *arginfo, char **stackp, void *argp)
     86 {
     87 	uint32_t *cpp = (uint32_t *)*stackp;
     88 	netbsd32_pointer_t dp;
     89 	uint32_t nullp = 0;
     90 	char *sp;
     91 	size_t len;
     92 	int argc = arginfo->ps_nargvstr;
     93 	int envc = arginfo->ps_nenvstr;
     94 	int error;
     95 
     96 	NETBSD32PTR32(dp, (char *)(cpp +
     97 	    1 +				/* int argc */
     98 	    argc +			/* char *argv[] */
     99 	    1 +				/* \0 */
    100 	    envc +			/* char *env[] */
    101 	    1) +			/* \0 */
    102 	    pack->ep_esch->es_arglen);	/* auxinfo */
    103 	sp = argp;
    104 
    105 	if ((error = copyout(&argc, cpp++, sizeof(argc))) != 0)
    106 		return error;
    107 
    108 	/* XXX don't copy them out, remap them! */
    109 	/* remember location of argv for later */
    110 	arginfo->ps_argvstr = (char **)(u_long)cpp;
    111 
    112 	for (; --argc >= 0; sp += len, NETBSD32PTR32PLUS(dp, len)) {
    113 		if ((error = copyout(&dp, cpp++, sizeof(dp))) != 0)
    114 			return error;
    115 		if ((error = copyoutstr(sp, NETBSD32PTR64(dp),
    116 		    ARG_MAX, &len)) != 0)
    117 			return error;
    118 	}
    119 	if ((error = copyout(&nullp, cpp++, sizeof(nullp))) != 0)
    120 		return error;
    121 
    122 	/* remember location of envp for later */
    123 	arginfo->ps_envstr = (char **)(u_long)cpp;
    124 
    125 	for (; --envc >= 0; sp += len, NETBSD32PTR32PLUS(dp, len)) {
    126 		if ((error = copyout(&dp, cpp++, sizeof(dp))) != 0)
    127 			return error;
    128 		if ((error = copyoutstr(sp, NETBSD32PTR64(dp),
    129 		    ARG_MAX, &len)) != 0)
    130 			return error;
    131 	}
    132 	if ((error = copyout(&nullp, cpp++, sizeof(nullp))) != 0)
    133 		return error;
    134 
    135 	*stackp = (char *)cpp;
    136 	return 0;
    137 }
    138 
    139 #endif /* !_NETBSD32_EXEC_H_ */
    140