/* mpi-inline.h  -  Internal to the Multi Precision Integers
 *	Copyright (C) 1994, 1996, 1998, 1999 Free Software Foundation, Inc.
 *
 * This file is part of GnuPG.
 *
 * GnuPG is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * GnuPG is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 *
 * Note: This code is heavily based on the GNU MP Library.
 *	 Actually it's the same code with only minor changes in the
 *	 way the data is stored; this is to support the abstraction
 *	 of an optional secure memory allocation which may be used
 *	 to avoid revealing of sensitive data due to paging etc.
 *	 The GNU MP Library itself is published under the LGPL;
 *	 however I decided to publish this code under the plain GPL.
 */

#ifndef G10_MPI_INLINE_H
#define G10_MPI_INLINE_H

#ifndef G10_MPI_INLINE_DECL
#define G10_MPI_INLINE_DECL  static inline
#endif

G10_MPI_INLINE_DECL mpi_limb_t
mpihelp_add_1(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,
	      mpi_size_t s1_size, mpi_limb_t s2_limb)
{
	mpi_limb_t x;

	x = *s1_ptr++;
	s2_limb += x;
	*res_ptr++ = s2_limb;
	if (s2_limb < x) {	/* sum is less than the left operand: handle carry */
		while (--s1_size) {
			x = *s1_ptr++ + 1;	/* add carry */
			*res_ptr++ = x;	/* and store */
			if (x)	/* not 0 (no overflow): we can stop */
				goto leave;
		}
		return 1;	/* return carry (size of s1 to small) */
	}

leave:
	if (res_ptr != s1_ptr) {	/* not the same variable */
		mpi_size_t i;	/* copy the rest */
		for (i = 0; i < s1_size - 1; i++)
			res_ptr[i] = s1_ptr[i];
	}
	return 0;		/* no carry */
}

G10_MPI_INLINE_DECL mpi_limb_t
mpihelp_add(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, mpi_size_t s1_size,
	    mpi_ptr_t s2_ptr, mpi_size_t s2_size)
{
	mpi_limb_t cy = 0;

	if (s2_size)
		cy = mpihelp_add_n(res_ptr, s1_ptr, s2_ptr, s2_size);

	if (s1_size - s2_size)
		cy = mpihelp_add_1(res_ptr + s2_size, s1_ptr + s2_size,
				   s1_size - s2_size, cy);
	return cy;
}

G10_MPI_INLINE_DECL mpi_limb_t
mpihelp_sub_1(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,
	      mpi_size_t s1_size, mpi_limb_t s2_limb)
{
	mpi_limb_t x;

	x = *s1_ptr++;
	s2_limb = x - s2_limb;
	*res_ptr++ = s2_limb;
	if (s2_limb > x) {
		while (--s1_size) {
			x = *s1_ptr++;
			*res_ptr++ = x - 1;
			if (x)
				goto leave;
		}
		return 1;
	}

leave:
	if (res_ptr != s1_ptr) {
		mpi_size_t i;
		for (i = 0; i < s1_size - 1; i++)
			res_ptr[i] = s1_ptr[i];
	}
	return 0;
}

G10_MPI_INLINE_DECL mpi_limb_t
mpihelp_sub(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, mpi_size_t s1_size,
	    mpi_ptr_t s2_ptr, mpi_size_t s2_size)
{
	mpi_limb_t cy = 0;

	if (s2_size)
		cy = mpihelp_sub_n(res_ptr, s1_ptr, s2_ptr, s2_size);

	if (s1_size - s2_size)
		cy = mpihelp_sub_1(res_ptr + s2_size, s1_ptr + s2_size,
				   s1_size - s2_size, cy);
	return cy;
}

#endif /*G10_MPI_INLINE_H */
/net-next.git/commit/include/crypto/hash.h?h=nds-private-remove&amp;id=045169816b31b10faed984b01c390db1b32ee4c1'>hash.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='045169816b31b10faed984b01c390db1b32ee4c1'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-10 09:47:13 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-10 09:47:13 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/crypto/hash.h?h=nds-private-remove&amp;id=045169816b31b10faed984b01c390db1b32ee4c1'>045169816b31b10faed984b01c390db1b32ee4c1</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/crypto/hash.h?id=045169816b31b10faed984b01c390db1b32ee4c1'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=045169816b31b10faed984b01c390db1b32ee4c1'>ecb1d0c763f3d8cb0af749717b66ac47e6981d33</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/crypto/hash.h?h=nds-private-remove&amp;id=045169816b31b10faed984b01c390db1b32ee4c1'>include/crypto/hash.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/crypto/hash.h?h=nds-private-remove&amp;id=cd6628953e4216b65e7d91ab70ff8e5b65c9fde9'>cd6628953e4216b65e7d91ab70ff8e5b65c9fde9</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/crypto/hash.h?h=nds-private-remove&amp;id=045169816b31b10faed984b01c390db1b32ee4c1&amp;id2=cd6628953e4216b65e7d91ab70ff8e5b65c9fde9'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/crypto/hash.h?h=nds-private-remove&amp;id=678b5c6b22fed89a13d5b2267f423069a9b11c80'>678b5c6b22fed89a13d5b2267f423069a9b11c80</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/crypto/hash.h?h=nds-private-remove&amp;id=045169816b31b10faed984b01c390db1b32ee4c1&amp;id2=678b5c6b22fed89a13d5b2267f423069a9b11c80'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6</div><div class='commit-msg'>Pull crypto fixes from Herbert Xu:
 "This fixes the following issues:

   - Fix pointer size when caam is used with AArch64 boot loader on
     AArch32 kernel.

   - Fix ahash state corruption in marvell driver.

   - Fix buggy algif_aed tag handling.

   - Prevent mcryptd from being used with incompatible algorithms which
     can cause crashes"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: algif_aead - fix uninitialized variable warning
  crypto: mcryptd - Check mcryptd algorithm compatibility
  crypto: algif_aead - fix AEAD tag memory handling
  crypto: caam - fix pointer size for AArch64 boot loader, AArch32 kernel
  crypto: marvell - Don't corrupt state of an STD req for re-stepped ahash
  crypto: marvell - Don't copy hash operation twice into the SRAM
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=045169816b31b10faed984b01c390db1b32ee4c1'>Diffstat</a> (limited to 'include/crypto/hash.h')</div><table summary='diffstat' class='diffstat'>