/*
 * intel_pt_log.c: Intel Processor Trace support
 * Copyright (c) 2013-2014, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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.
 *
 */

#include <stdio.h>
#include <stdint.h>
#include <inttypes.h>
#include <stdarg.h>
#include <stdbool.h>
#include <string.h>

#include "intel-pt-log.h"
#include "intel-pt-insn-decoder.h"

#include "intel-pt-pkt-decoder.h"

#define MAX_LOG_NAME 256

static FILE *f;
static char log_name[MAX_LOG_NAME];
bool intel_pt_enable_logging;

void intel_pt_log_enable(void)
{
	intel_pt_enable_logging = true;
}

void intel_pt_log_disable(void)
{
	if (f)
		fflush(f);
	intel_pt_enable_logging = false;
}

void intel_pt_log_set_name(const char *name)
{
	strncpy(log_name, name, MAX_LOG_NAME - 5);
	strcat(log_name, ".log");
}

static void intel_pt_print_data(const unsigned char *buf, int len, uint64_t pos,
				int indent)
{
	int i;

	for (i = 0; i < indent; i++)
		fprintf(f, " ");

	fprintf(f, "  %08" PRIx64 ": ", pos);
	for (i = 0; i < len; i++)
		fprintf(f, " %02x", buf[i]);
	for (; i < 16; i++)
		fprintf(f, "   ");
	fprintf(f, " ");
}

static void intel_pt_print_no_data(uint64_t pos, int indent)
{
	int i;

	for (i = 0; i < indent; i++)
		fprintf(f, " ");

	fprintf(f, "  %08" PRIx64 ": ", pos);
	for (i = 0; i < 16; i++)
		fprintf(f, "   ");
	fprintf(f, " ");
}

static int intel_pt_log_open(void)
{
	if (!intel_pt_enable_logging)
		return -1;

	if (f)
		return 0;

	if (!log_name[0])
		return -1;

	f = fopen(log_name, "w+");
	if (!f) {
		intel_pt_enable_logging = false;
		return -1;
	}

	return 0;
}

void __intel_pt_log_packet(const struct intel_pt_pkt *packet, int pkt_len,
			   uint64_t pos, const unsigned char *buf)
{
	char desc[INTEL_PT_PKT_DESC_MAX];

	if (intel_pt_log_open())
		return;

	intel_pt_print_data(buf, pkt_len, pos, 0);
	intel_pt_pkt_desc(packet, desc, INTEL_PT_PKT_DESC_MAX);
	fprintf(f, "%s\n", desc);
}

void __intel_pt_log_insn(struct intel_pt_insn *intel_pt_insn, uint64_t ip)
{
	char desc[INTEL_PT_INSN_DESC_MAX];
	size_t len = intel_pt_insn->length;

	if (intel_pt_log_open())
		return;

	if (len > INTEL_PT_INSN_BUF_SZ)
		len = INTEL_PT_INSN_BUF_SZ;
	intel_pt_print_data(intel_pt_insn->buf, len, ip, 8);
	if (intel_pt_insn_desc(intel_pt_insn, desc, INTEL_PT_INSN_DESC_MAX) > 0)
		fprintf(f, "%s\n", desc);
	else
		fprintf(f, "Bad instruction!\n");
}

void __intel_pt_log_insn_no_data(struct intel_pt_insn *intel_pt_insn,
				 uint64_t ip)
{
	char desc[INTEL_PT_INSN_DESC_MAX];

	if (intel_pt_log_open())
		return;

	intel_pt_print_no_data(ip, 8);
	if (intel_pt_insn_desc(intel_pt_insn, desc, INTEL_PT_INSN_DESC_MAX) > 0)
		fprintf(f, "%s\n", desc);
	else
		fprintf(f, "Bad instruction!\n");
}

void __intel_pt_log(const char *fmt, ...)
{
	va_list args;

	if (intel_pt_log_open())
		return;

	va_start(args, fmt);
	vfprintf(f, fmt, args);
	va_end(args);
}
a678f4777fecaa&amp;showmsg=1'>selftests</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests/vm?id=e4cf8a38fc0d257b4070066e46a678f4777fecaa&amp;showmsg=1'>vm</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests/vm/config?id=e4cf8a38fc0d257b4070066e46a678f4777fecaa&amp;showmsg=1'>config</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests/vm/config?id=e4cf8a38fc0d257b4070066e46a678f4777fecaa'>Collapse</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
</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'>2017-02-06 14:16:23 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-06 14:16:23 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs/rt5616.c?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>396bf4cd835e62d70fad4a03a8963e61f19021f2</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/soc/codecs/rt5616.c?id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>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=396bf4cd835e62d70fad4a03a8963e61f19021f2'>79ac8f33554260fea1a8d43e6f8c4c5460115f45</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/soc/codecs/rt5616.c?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>sound/soc/codecs/rt5616.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs/rt5616.c?h=nds-private-remove&amp;id=d5adbfcd5f7bcc6fa58a41c5c5ada0e5c826ce2c'>d5adbfcd5f7bcc6fa58a41c5c5ada0e5c826ce2c</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/codecs/rt5616.c?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2&amp;id2=d5adbfcd5f7bcc6fa58a41c5c5ada0e5c826ce2c'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs/rt5616.c?h=nds-private-remove&amp;id=7c2cf1c4615cc2f576d0604406cdf0065f00b83b'>7c2cf1c4615cc2f576d0604406cdf0065f00b83b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/codecs/rt5616.c?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2&amp;id2=7c2cf1c4615cc2f576d0604406cdf0065f00b83b'>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:

 - use-after-free in algif_aead

 - modular aesni regression when pcbc is modular but absent

 - bug causing IO page faults in ccp

 - double list add in ccp

 - NULL pointer dereference in qat (two patches)

 - panic in chcr

 - NULL pointer dereference in chcr

 - out-of-bound access in chcr

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: chcr - Fix key length for RFC4106
  crypto: algif_aead - Fix kernel panic on list_del
  crypto: aesni - Fix failure when pcbc module is absent
  crypto: ccp - Fix double add when creating new DMA command
  crypto: ccp - Fix DMA operations when IOMMU is enabled
  crypto: chcr - Check device is allocated before use
  crypto: chcr - Fix panic on dma_unmap_sg
  crypto: qat - zero esram only for DH85x devices
  crypto: qat - fix bar discovery for c62x
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>Diffstat</a> (limited to 'sound/soc/codecs/rt5616.c')</div><table summary='diffstat' class='diffstat'>