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netbsd32_exec.h revision 1.7 
      1 /*	$NetBSD: netbsd32_exec.h,v 1.7 2000/12/01 22:05:18 jdolecek Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1998 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  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     23  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     28  * SUCH DAMAGE.
     29  */
     30 
     31 #ifndef	_NETBSD32_EXEC_H_
     32 #define	_NETBSD32_EXEC_H_
     33 
     34 #include <compat/netbsd32/netbsd32.h>
     35 
     36 /* from <sys/exec_aout.h> */
     37 /*
     38  * Header prepended to each a.out file.
     39  * only manipulate the a_midmag field via the
     40  * N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros below.
     41  */
     42 struct netbsd32_exec {
     43 	netbsd32_u_long	a_midmag;	/* htonl(flags<<26 | mid<<16 | magic) */
     44 	netbsd32_u_long	a_text;		/* text segment size */
     45 	netbsd32_u_long	a_data;		/* initialized data size */
     46 	netbsd32_u_long	a_bss;		/* uninitialized data size */
     47 	netbsd32_u_long	a_syms;		/* symbol table size */
     48 	netbsd32_u_long	a_entry;	/* entry point */
     49 	netbsd32_u_long	a_trsize;	/* text relocation size */
     50 	netbsd32_u_long	a_drsize;	/* data relocation size */
     51 };
     52 
     53 extern const struct emul emul_netbsd32;
     54 
     55 #ifdef EXEC_AOUT
     56 int exec_netbsd32_makecmds __P((struct proc *, struct exec_package *));
     57 #endif
     58 #ifdef EXEC_ELF32
     59 int netbsd32_elf32_probe __P((struct proc *, struct exec_package *, void *,
     60     char *, vaddr_t *));
     61 void *netbsd32_elf32_copyargs __P((struct exec_package *, struct ps_strings *,
     62 	void *, void *));
     63 #endif /* EXEC_ELF32 */
     64 
     65 static __inline void *netbsd32_copyargs __P((struct exec_package *,
     66 	struct ps_strings *, void *, void *));
     67 
     68 /*
     69  * We need to copy out all pointers as 32-bit values.
     70  */
     71 static __inline void *
     72 netbsd32_copyargs(pack, arginfo, stack, argp)
     73 	struct exec_package *pack;
     74 	struct ps_strings *arginfo;
     75 	void *stack;
     76 	void *argp;
     77 {
     78 	u_int32_t *cpp = stack;
     79 	u_int32_t dp;
     80 	u_int32_t nullp = 0;
     81 	char *sp;
     82 	size_t len;
     83 	int argc = arginfo->ps_nargvstr;
     84 	int envc = arginfo->ps_nenvstr;
     85 
     86 	if (copyout(&argc, cpp++, sizeof(argc)))
     87 		return NULL;
     88 
     89 	dp = (u_long) (cpp + argc + envc + 2 + pack->ep_esch->es_arglen);
     90 	sp = argp;
     91 
     92 	/* XXX don't copy them out, remap them! */
     93 	arginfo->ps_argvstr = (char **)(u_long)cpp; /* remember location of argv for later */
     94 
     95 	for (; --argc >= 0; sp += len, dp += len) {
     96 		if (copyout(&dp, cpp++, sizeof(dp)) ||
     97 		    copyoutstr(sp, (char *)(u_long)dp, ARG_MAX, &len))
     98 			return NULL;
     99 	}
    100 	if (copyout(&nullp, cpp++, sizeof(nullp)))
    101 		return NULL;
    102 
    103 	arginfo->ps_envstr = (char **)(u_long)cpp; /* remember location of envp for later */
    104 
    105 	for (; --envc >= 0; sp += len, dp += len) {
    106 		if (copyout(&dp, cpp++, sizeof(dp)) ||
    107 		    copyoutstr(sp, (char *)(u_long)dp, ARG_MAX, &len))
    108 			return NULL;
    109 	}
    110 	if (copyout(&nullp, cpp++, sizeof(nullp)))
    111 		return NULL;
    112 
    113 	return cpp;
    114 }
    115 
    116 #endif /* !_NETBSD32_EXEC_H_ */
    117