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/* This testcase is part of GDB, the GNU debugger.
Copyright 2012-2022 Free Software Foundation, Inc.
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 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that 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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#if USE_SEMAPHORES
#define _SDT_HAS_SEMAPHORES
__extension__ unsigned short test_user_semaphore __attribute__ ((unused)) __attribute__ ((section (".probes")));
#define TEST test_user_semaphore
__extension__ unsigned short test_two_semaphore __attribute__ ((unused)) __attribute__ ((section (".probes")));
#define TEST2 test_two_semaphore
__extension__ unsigned short test_m4_semaphore __attribute__ ((unused)) __attribute__ ((section (".probes")));
__extension__ unsigned short test_pstr_semaphore __attribute__ ((unused)) __attribute__ ((section (".probes")));
__extension__ unsigned short test_ps_semaphore __attribute__ ((unused)) __attribute__ ((section (".probes")));
__extension__ unsigned short test_xmmreg_semaphore __attribute__ ((unused)) __attribute__ ((section (".probes")));
#else
int relocation_marker __attribute__ ((unused));
#define TEST 1
#define TEST2 1
#endif
#include <sys/sdt.h>
/* We only support SystemTap and only the v3 form. */
#if _SDT_NOTE_TYPE != 3
#error "not using SystemTap v3 probes"
#endif
struct funcs
{
int val;
const char *(*ps) (int);
};
static void
m1 (void)
{
/* m1 and m2 are equivalent, but because of some compiler
optimizations we have to make each of them unique. This is why
we have this dummy variable here. */
volatile int dummy = 0;
if (TEST2)
STAP_PROBE1 (test, two, dummy);
}
static void
m2 (void)
{
if (TEST2)
STAP_PROBE (test, two);
}
static int
f (int x)
{
if (TEST)
STAP_PROBE1 (test, user, x);
return x+5;
}
static const char *
pstr (int val)
{
const char *a = "This is a test message.";
const char *b = "This is another test message.";
STAP_PROBE3 (test, ps, a, b, val);
return val == 0 ? a : b;
}
#ifdef __SSE2__
static const char * __attribute__((noinline))
use_xmm_reg (int val)
{
volatile register int val_in_reg asm ("xmm0") = val;
STAP_PROBE1 (test, xmmreg, val_in_reg);
return val == 0 ? "xxx" : "yyy";
}
#else
static const char * __attribute__((noinline)) ATTRIBUTE_NOCLONE
use_xmm_reg (int val)
{
/* Nothing. */
}
#endif /* __SSE2__ */
static void
m4 (const struct funcs *fs, int v)
{
STAP_PROBE3 (test, m4, fs->val, fs->ps (v), v);
}
int
main()
{
struct funcs fs;
fs.val = 42;
fs.ps = pstr;
f (f (23));
m1 ();
m2 ();
m4 (&fs, 0);
m4 (&fs, 1);
use_xmm_reg (0x1234);
return 0; /* last break here */
}
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