54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/*
|
|
* Copyright 2016, Chris Smart, IBM Corporation.
|
|
*
|
|
* 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.
|
|
*
|
|
* Common code for copy, copy_first, paste and paste_last unaligned
|
|
* tests.
|
|
*
|
|
*/
|
|
|
|
#include <signal.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include "utils.h"
|
|
#include "instructions.h"
|
|
#include "copy_paste_unaligned_common.h"
|
|
|
|
unsigned int expected_instruction;
|
|
unsigned int instruction_mask;
|
|
|
|
char cacheline_buf[128] __cacheline_aligned;
|
|
|
|
void signal_action_handler(int signal_num, siginfo_t *info, void *ptr)
|
|
{
|
|
ucontext_t *ctx = ptr;
|
|
#if defined(__powerpc64__)
|
|
unsigned int *pc = (unsigned int *)ctx->uc_mcontext.gp_regs[PT_NIP];
|
|
#else
|
|
unsigned int *pc = (unsigned int *)ctx->uc_mcontext.uc_regs->gregs[PT_NIP];
|
|
#endif
|
|
|
|
/*
|
|
* Check that the signal was on the correct instruction, using a
|
|
* mask because the compiler assigns the register at RB.
|
|
*/
|
|
if ((*pc & instruction_mask) == expected_instruction)
|
|
_exit(0); /* We hit the right instruction */
|
|
|
|
_exit(1);
|
|
}
|
|
|
|
void setup_signal_handler(void)
|
|
{
|
|
struct sigaction signal_action;
|
|
|
|
memset(&signal_action, 0, sizeof(signal_action));
|
|
signal_action.sa_sigaction = signal_action_handler;
|
|
signal_action.sa_flags = SA_SIGINFO;
|
|
sigaction(SIGBUS, &signal_action, NULL);
|
|
}
|