/*
 *  Fast C2P (Chunky-to-Planar) Conversion
 *
 *  Copyright (C) 2003-2008 Geert Uytterhoeven
 *
 *  This file is subject to the terms and conditions of the GNU General Public
 *  License. See the file COPYING in the main directory of this archive
 *  for more details.
 */

#include <linux/module.h>
#include <linux/string.h>

#include <asm/unaligned.h>

#include "c2p.h"
#include "c2p_core.h"


    /*
     *  Perform a full C2P step on 16 8-bit pixels, stored in 4 32-bit words
     *  containing
     *    - 16 8-bit chunky pixels on input
     *    - permutated planar data (2 planes per 32-bit word) on output
     */

static void c2p_16x8(u32 d[4])
{
	transp4(d, 8, 2);
	transp4(d, 1, 2);
	transp4x(d, 16, 2);
	transp4x(d, 2, 2);
	transp4(d, 4, 1);
}


    /*
     *  Array containing the permutation indices of the planar data after c2p
     */

static const int perm_c2p_16x8[4] = { 1, 3, 0, 2 };


    /*
     *  Store a full block of iplan2 data after c2p conversion
     */

static inline void store_iplan2(void *dst, u32 bpp, u32 d[4])
{
	int i;

	for (i = 0; i < bpp/2; i++, dst += 4)
		put_unaligned_be32(d[perm_c2p_16x8[i]], dst);
}


    /*
     *  Store a partial block of iplan2 data after c2p conversion
     */

static inline void store_iplan2_masked(void *dst, u32 bpp, u32 d[4], u32 mask)
{
	int i;

	for (i = 0; i < bpp/2; i++, dst += 4)
		put_unaligned_be32(comp(d[perm_c2p_16x8[i]],
					get_unaligned_be32(dst), mask),
				   dst);
}


    /*
     *  c2p_iplan2 - Copy 8-bit chunky image data to an interleaved planar
     *  frame buffer with 2 bytes of interleave
     *  @dst: Starting address of the planar frame buffer
     *  @dx: Horizontal destination offset (in pixels)
     *  @dy: Vertical destination offset (in pixels)
     *  @width: Image width (in pixels)
     *  @height: Image height (in pixels)
     *  @dst_nextline: Frame buffer offset to the next line (in bytes)
     *  @src_nextline: Image offset to the next line (in bytes)
     *  @bpp: Bits per pixel of the planar frame buffer (2, 4, or 8)
     */

void c2p_iplan2(void *dst, const void *src, u32 dx, u32 dy, u32 width,
		u32 height, u32 dst_nextline, u32 src_nextline, u32 bpp)
{
	union {
		u8 pixels[16];
		u32 words[4];
	} d;
	u32 dst_idx, first, last, w;
	const u8 *c;
	void *p;

	dst += dy*dst_nextline+(dx & ~15)*bpp;
	dst_idx = dx % 16;
	first = 0xffffU >> dst_idx;
	first |= first << 16;
	last = 0xffffU ^ (0xffffU >> ((dst_idx+width) % 16));
	last |= last << 16;
	while (height--) {
		c = src;
		p = dst;
		w = width;
		if (dst_idx+width <= 16) {
			/* Single destination word */
			first &= last;
			memset(d.pixels, 0, sizeof(d));
			memcpy(d.pixels+dst_idx, c, width);
			c += width;
			c2p_16x8(d.words);
			store_iplan2_masked(p, bpp, d.words, first);
			p += bpp*2;
		} else {
			/* Multiple destination words */
			w = width;
			/* Leading bits */
			if (dst_idx) {
				w = 16 - dst_idx;
				memset(d.pixels, 0, dst_idx);
				memcpy(d.pixels+dst_idx, c, w);
				c += w;
				c2p_16x8(d.words);
				store_iplan2_masked(p, bpp, d.words, first);
				p += bpp*2;
				w = width-w;
			}
			/* Main chunk */
			while (w >= 16) {
				memcpy(d.pixels, c, 16);
				c += 16;
				c2p_16x8(d.words);
				store_iplan2(p, bpp, d.words);
				p += bpp*2;
				w -= 16;
			}
			/* Trailing bits */
			w %= 16;
			if (w > 0) {
				memcpy(d.pixels, c, w);
				memset(d.pixels+w, 0, 16-w);
				c2p_16x8(d.words);
				store_iplan2_masked(p, bpp, d.words, last);
			}
		}
		src += src_nextline;
		dst += dst_nextline;
	}
}
EXPORT_SYMBOL_GPL(c2p_iplan2);

MODULE_LICENSE("GPL");
v 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='b5b46c4740aed1538544f0fa849c5b76c7823469'/><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>Jiri Slaby &lt;jslaby@suse.cz&gt;</td><td class='right'>2017-01-18 14:29:21 +0100</td></tr>
<tr><th>committer</th><td>Ingo Molnar &lt;mingo@kernel.org&gt;</td><td class='right'>2017-01-19 08:39:44 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ceph/crush/hash.c?h=nds-private-remove&amp;id=b5b46c4740aed1538544f0fa849c5b76c7823469'>b5b46c4740aed1538544f0fa849c5b76c7823469</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/ceph/crush/hash.c?id=b5b46c4740aed1538544f0fa849c5b76c7823469'>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=b5b46c4740aed1538544f0fa849c5b76c7823469'>125e7aced4835bad6f6a0c0d02d012f333caf922</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/ceph/crush/hash.c?h=nds-private-remove&amp;id=b5b46c4740aed1538544f0fa849c5b76c7823469'>net/ceph/crush/hash.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ceph/crush/hash.c?h=nds-private-remove&amp;id=fa19a769f82fb9a5ca000b83cacd13fcaeda51ac'>fa19a769f82fb9a5ca000b83cacd13fcaeda51ac</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ceph/crush/hash.c?h=nds-private-remove&amp;id=b5b46c4740aed1538544f0fa849c5b76c7823469&amp;id2=fa19a769f82fb9a5ca000b83cacd13fcaeda51ac'>diff</a>)</td></tr></table>
<div class='commit-subject'>objtool: Fix IRET's opcode</div><div class='commit-msg'>The IRET opcode is 0xcf according to the Intel manual and also to objdump of my
vmlinux:

    1ea8:       48 cf                   iretq

Fix the opcode in arch_decode_instruction().

The previous value (0xc5) seems to correspond to LDS.

Signed-off-by: Jiri Slaby &lt;jslaby@suse.cz&gt;
Acked-by: Josh Poimboeuf &lt;jpoimboe@redhat.com&gt;
Cc: Andy Lutomirski &lt;luto@kernel.org&gt;
Cc: Borislav Petkov &lt;bp@alien8.de&gt;
Cc: Brian Gerst &lt;brgerst@gmail.com&gt;
Cc: Denys Vlasenko &lt;dvlasenk@redhat.com&gt;
Cc: H. Peter Anvin &lt;hpa@zytor.com&gt;
Cc: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Link: http://lkml.kernel.org/r/20170118132921.19319-1-jslaby@suse.cz
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=b5b46c4740aed1538544f0fa849c5b76c7823469'>Diffstat</a> (limited to 'net/ceph/crush/hash.c')</div><table summary='diffstat' class='diffstat'>