/*
 * Copyright 2015, Michael Neuling, IBM Corp.
 * Licensed under GPLv2.
 * Original: Michael Neuling 19/7/2013
 * Edited: Rashmica Gupta 01/12/2015
 *
 * Do some transactions, see if the tar is corrupted.
 * If the transaction is aborted, the TAR should be rolled back to the
 * checkpointed value before the transaction began. The value written to
 * TAR in suspended mode should only remain in TAR if the transaction
 * completes.
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include "tm.h"
#include "utils.h"

int	num_loops	= 10000;

int test_tar(void)
{
	int i;

	SKIP_IF(!have_htm());

	for (i = 0; i < num_loops; i++)
	{
		uint64_t result = 0;
		asm __volatile__(
			"li	7, 1;"
			"mtspr	%[tar], 7;"	/* tar = 1 */
			"tbegin.;"
			"beq	3f;"
			"li	4, 0x7000;"	/* Loop lots, to use time */
			"2:;"			/* Start loop */
			"li	7, 2;"
			"mtspr	%[tar], 7;"	/* tar = 2 */
			"tsuspend.;"
			"li	7, 3;"
			"mtspr	%[tar], 7;"	/* tar = 3 */
			"tresume.;"
			"subi	4, 4, 1;"
			"cmpdi	4, 0;"
			"bne	2b;"
			"tend.;"

			/* Transaction sucess! TAR should be 3 */
			"mfspr  7, %[tar];"
			"ori	%[res], 7, 4;"  // res = 3|4 = 7
			"b	4f;"

			/* Abort handler. TAR should be rolled back to 1 */
			"3:;"
			"mfspr  7, %[tar];"
			"ori	%[res], 7, 8;"	// res = 1|8 = 9
			"4:;"

			: [res]"=r"(result)
			: [tar]"i"(SPRN_TAR)
			   : "memory", "r0", "r4", "r7");

		/* If result is anything else other than 7 or 9, the tar
		 * value must have been corrupted. */
		if ((result != 7) && (result != 9))
			return 1;
	}
	return 0;
}

int main(int argc, char *argv[])
{
	/* A low number of iterations (eg 100) can cause a false pass */
	if (argc > 1) {
		if (strcmp(argv[1], "-h") == 0) {
			printf("Syntax:\n\t%s [<num loops>]\n",
			       argv[0]);
			return 1;
		} else {
			num_loops = atoi(argv[1]);
		}
	}

	printf("Starting, %d loops\n", num_loops);

	return test_harness(test_tar, "tm_tar");
}
d1a17d9b198ebaa34eb'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ssb-hcd.c?h=nds-private-remove&amp;id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/host/ssb-hcd.c?h=nds-private-remove&amp;id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/drivers/usb/host/ssb-hcd.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers?h=nds-private-remove&amp;id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb?h=nds-private-remove&amp;id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/host?h=nds-private-remove&amp;id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>host</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/host/ssb-hcd.c?h=nds-private-remove&amp;id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb'>ssb-hcd.c</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/drivers/usb/host/ssb-hcd.c?h=nds-private-remove&amp;id=cd44691f7177b2c1e1509d1a17d9b198ebaa34eb&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
e='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'>2017-01-30 15:47:19 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-30 15:47:19 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/irda/ircomm/ircomm_ttp.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/irda/ircomm/ircomm_ttp.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>4078d3ae27d4ebb85bdcd4d84e9b9a4d059f22bb</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/irda/ircomm/ircomm_ttp.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>net/irda/ircomm/ircomm_ttp.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/irda/ircomm/ircomm_ttp.c?id=751321b3dd5040dc5be19bd23f985e80c914621a'>751321b3dd5040dc5be19bd23f985e80c914621a</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/irda/ircomm/ircomm_ttp.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b&amp;id2=751321b3dd5040dc5be19bd23f985e80c914621a'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/irda/ircomm/ircomm_ttp.c?id=54791b276b4000b307339f269d3bf7db877d536f'>54791b276b4000b307339f269d3bf7db877d536f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/irda/ircomm/ircomm_ttp.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b&amp;id2=54791b276b4000b307339f269d3bf7db877d536f'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc</div><div class='commit-msg'>Pull sparc fixes from David Miller:
 "Several small bug fixes and tidies, along with a fix for non-resumable
  memory errors triggered by userspace"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Handle PIO &amp; MEM non-resumable errors.
  sparc64: Zero pages on allocation for mondo and error queues.
  sparc: Fixed typo in sstate.c. Replaced panicing with panicking
  sparc: use symbolic names for tsb indexing
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>Diffstat</a> (limited to 'net/irda/ircomm/ircomm_ttp.c')</div><table summary='diffstat' class='diffstat'>