You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91 lines
2.3 KiB
91 lines
2.3 KiB
8 years ago
|
/*
|
||
|
|
* Copyright 2016, Cyril Bur, IBM Corp.
|
||
|
|
*
|
||
|
|
* This program 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.
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* Test the kernel's signal frame code.
|
||
|
|
*
|
||
|
|
* The kernel sets up two sets of ucontexts if the signal was to be
|
||
|
|
* delivered while the thread was in a transaction.
|
||
|
|
* Expected behaviour is that the checkpointed state is in the user
|
||
|
|
* context passed to the signal handler. The speculated state can be
|
||
|
|
* accessed with the uc_link pointer.
|
||
|
|
*
|
||
|
|
* The rationale for this is that if TM unaware code (which linked
|
||
|
|
* against TM libs) installs a signal handler it will not know of the
|
||
|
|
* speculative nature of the 'live' registers and may infer the wrong
|
||
|
|
* thing.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <signal.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
|
||
|
|
#include <altivec.h>
|
||
|
|
|
||
|
|
#include "utils.h"
|
||
|
|
#include "tm.h"
|
||
|
|
|
||
|
|
#define MAX_ATTEMPT 500000
|
||
|
|
|
||
|
|
#define NV_GPR_REGS 18
|
||
|
|
|
||
|
|
long tm_signal_self_context_load(pid_t pid, long *gprs, double *fps, vector int *vms, vector int *vss);
|
||
|
|
|
||
|
|
static sig_atomic_t fail;
|
||
|
|
|
||
|
|
static long gps[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
|
||
|
|
-1,-2,-3,-4,-5,-6,-7,-8,-9,-10,-11,-12,-13,-14,-15,-16,-17,-18};
|
||
|
|
|
||
|
|
static void signal_usr1(int signum, siginfo_t *info, void *uc)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
ucontext_t *ucp = uc;
|
||
|
|
ucontext_t *tm_ucp = ucp->uc_link;
|
||
|
|
|
||
|
|
for (i = 0; i < NV_GPR_REGS && !fail; i++) {
|
||
|
|
fail = (ucp->uc_mcontext.gp_regs[i + 14] != gps[i]);
|
||
|
|
fail |= (tm_ucp->uc_mcontext.gp_regs[i + 14] != gps[i + NV_GPR_REGS]);
|
||
|
|
if (fail)
|
||
|
|
printf("Failed on %d GPR %lu or %lu\n", i,
|
||
|
|
ucp->uc_mcontext.gp_regs[i + 14], tm_ucp->uc_mcontext.gp_regs[i + 14]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static int tm_signal_context_chk_gpr()
|
||
|
|
{
|
||
|
|
struct sigaction act;
|
||
|
|
int i;
|
||
|
|
long rc;
|
||
|
|
pid_t pid = getpid();
|
||
|
|
|
||
|
|
SKIP_IF(!have_htm());
|
||
|
|
|
||
|
|
act.sa_sigaction = signal_usr1;
|
||
|
|
sigemptyset(&act.sa_mask);
|
||
|
|
act.sa_flags = SA_SIGINFO;
|
||
|
|
if (sigaction(SIGUSR1, &act, NULL) < 0) {
|
||
|
|
perror("sigaction sigusr1");
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
i = 0;
|
||
|
|
while (i < MAX_ATTEMPT && !fail) {
|
||
|
|
rc = tm_signal_self_context_load(pid, gps, NULL, NULL, NULL);
|
||
|
|
FAIL_IF(rc != pid);
|
||
|
|
i++;
|
||
|
|
}
|
||
|
|
|
||
|
|
return fail;
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(void)
|
||
|
|
{
|
||
|
|
return test_harness(tm_signal_context_chk_gpr, "tm_signal_context_chk_gpr");
|
||
|
|
}
|