/* * Coyright (c) 2005-2013 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #ifndef __MUNGE_H__ #define __MUNGE_H__ /* * Syscall argument mungers. * * The data to be munged has been explicitly copied in to the argument * area, and will be munged in place in the uu_arg[] array. These * mungers are for 32-bit app's syscalls, since 64-bit args are copied * from the save area to the uu_args in the order the * syscall ABI calls for. * * The issue is that the incoming args are 32-bit, but we must expand * them in place into 64-bit args, as if they were from a 64-bit process. * * There are several functions in this file with the following prototype * * void munge_XXXX(void *uu_args); * * The name of the function encodes the number and type of the parameters, * as follows: * * w = a 32-bit value such as an int or a 32-bit ptr, that does not * require sign extension. These are handled by zeroing a word * of output, and copying a word from input to output. * * s = a 32-bit value such as a long, which must be sign-extended to * a 64-bit long-long in the uu_args. These are handled by * loading a word of input and sign extending it to a double, * and storing two words of output. * * l = a 64-bit long-long. These are handled by copying two words * of input to the output. * * For example, "munge_wls" takes a word, a long-long, and a word. This * takes four words in the uu_arg[] area: the first word is in one, the * long-long takes two, and the final word is in the fourth. We store six * words: the low word is left in place, followed by a 0, followed by the * two words of the long-long, followed by the low word and the sign extended * high word of the preceeding low word. * * Because this is an in-place modification, we actually start at the end * of uu_arg[] and work our way back to the beginning of the array. */ void munge_w(void *args); void munge_ww(void *args); void munge_www(void *args); void munge_wwww(void *args); void munge_wwwww(void *args); void munge_wwwwww(void *args); void munge_wwwwwww(void *args); void munge_wwwwwwww(void *args); void munge_wl(void *args); void munge_wwl(void *args); void munge_wwlw(void *args); void munge_wwlll(void *args); void munge_wwllww(void *args); void munge_wlw(void *args); void munge_wlww(void *args); void munge_wlwwwll(void *args); void munge_wlwwwllw(void *args); void munge_wlwwlwlw(void *args); void munge_wll(void *args); void munge_wllww(void *args); void munge_wlll(void *args); void munge_wllll(void *args); void munge_wllwwll(void *args); void munge_wwwlw(void *args); void munge_wwwlww(void *args); void munge_wwwl(void *args); void munge_wwwwlw(void *args); void munge_wwwwl(void *args); void munge_wwwwwl(void *args); void munge_wwwwwlww(void *args); void munge_wwwwwllw(void *args); void munge_wwwwwlll(void *args); void munge_wwwwwwl(void *args); void munge_wwwwwwlw(void *args); void munge_wwwwwwll(void *args); void munge_wsw(void *args); void munge_wws(void *args); void munge_wwws(void *args); void munge_wwwsw(void *args); void munge_llllll(void *args); void munge_l(void *args); void munge_ll(void *args); void munge_lw(void *args); void munge_lwww(void *args); void munge_wwlwww(void *args); #endif /* __MUNGE_H__ */