summaryrefslogtreecommitdiff
path: root/gdb/testsuite/gdb.trace/trace-common.h
blob: 9f60d7fd7bd8d21a885e653cf098a9d99114dfd6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
/* This testcase is part of GDB, the GNU debugger.

   Copyright 2011-2018 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/>.  */

#ifdef SYMBOL_PREFIX
#define SYMBOL(str)     SYMBOL_PREFIX #str
#else
#define SYMBOL(str)     #str
#endif

/* FAST_TRACEPOINT_LABEL expands to an assembly instruction large enough to fit
   a fast tracepoint jump.  The parameter is the label where we'll set
   tracepoints and breakpoints.  */

#if (defined __x86_64__ || defined __i386__)

static void
x86_trace_dummy ()
{
  int x = 0;
  int y = x + 4;
}

#define FAST_TRACEPOINT_LABEL(name) \
  asm ("    .global " SYMBOL(name) "\n" \
       SYMBOL(name) ":\n" \
       "    call " SYMBOL(x86_trace_dummy) "\n" \
       )

#elif (defined __aarch64__) || (defined __powerpc__)

#define FAST_TRACEPOINT_LABEL(name) \
  asm ("    .global " SYMBOL(name) "\n" \
       SYMBOL(name) ":\n" \
       "    nop\n" \
       )

#elif (defined __s390__)

#define FAST_TRACEPOINT_LABEL(name) \
  asm ("    .global " SYMBOL(name) "\n" \
       SYMBOL(name) ":\n" \
       "    mvc 0(8, %r15), 0(%r15)\n" \
       )

#else

#error "unsupported architecture for trace tests"

#endif