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/* Event-Based Branch Facility Tests.
*
* Copyright IBM Corp. 2013
*
* The MIT License (MIT)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* Contributors:
* IBM Corporation, Adhemerval Zanella - Initial implementation.
*/
#include <stdio.h>
#include <inttypes.h>
#include <paf/ebb.h>
#define BESCR 806
static inline unsigned long int
get_bescr (void)
{
unsigned long int spr;
asm volatile ("mfspr %0, %1\n\t"
: "=r"(spr)
: "i"(BESCR));
return spr;
}
static int
ebb_context_test = 0;
static void
ebb_handler_test (void *context)
{
return;
}
static int
ebb_interface_test (void)
{
ebbhandler_t handler;
unsigned long int bescr;
unsigned long int mask;
int ret;
/* Register an invalid function to result in an error. */
handler = paf_ebb_register_handler (NULL, NULL, PAF_EBB_CALLBACK_GPR_SAVE,
0);
if (handler != EBB_REG_ERR)
{
printf ("Error: paf_ebb_register_handler (NULL) != EBB_REG_ERR\n");
return -1;
}
bescr = get_bescr ();
printf ("Initial EBB state: bescr %lx\n", bescr);
ret = paf_ebb_enable_branches ();
if (ret != 0)
{
printf ("Error: paf_ebb_enable_branches () returned %i\n", ret);
return -1;
}
/* To check agains both Global Enable (GE - bit 0) and Performance Monitor
Event Exception Enable (PME - bit 31). */
mask = 1 | (1 << 31);
/* Check if both GE (bit 0) and PME (bit 31) are set. */
bescr = get_bescr ();
if (!(bescr & mask))
{
printf ("Error: get_descr () resulted in 0x%lx\n", bescr);
return -1;
}
printf ("Enable EBB : bescr %lx\n", bescr);
paf_ebb_disable_branches ();
if (ret != 0)
{
printf ("Error: paf_ebb_disable_branches () returned %i\n", ret);
return -1;
}
/* Check if both GE (bit 0) and PME (bit 31) are not set. */
bescr = get_bescr ();
if (bescr & mask)
{
printf ("Error: get_bescr () resulted in 0x%lx\n", bescr);
return -1;
}
printf ("Disable EBB : bescr %lx\n", bescr);
/* Register a valid callback and check its address. */
handler = paf_ebb_register_handler (ebb_handler_test, &ebb_context_test,
PAF_EBB_CALLBACK_GPR_SAVE, 0);
if (handler != ebb_handler_test)
{
printf ("Error: paf_ebb_register_handler \
(ebb_handler_test) != handler\n");
return -1;
}
return 0;
}
int
main (void)
{
int ret = 0;
ret += ebb_interface_test ();
return ret;
}
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