binutils-gdb/gdb/testsuite/gdb.trace/actions.c
Marcin Kościelnicki f77198c878 gdb.trace/tfind.exp: Force call via global entry point on ppc64le.
tfind.exp sets a breakpoint on *gdb_recursion_test, which is the global
entry point on ppc64le, and won't be hit, since the call uses
the local entry.  Fix by calling the function via a pointer in a global
variable, forcing use of the global entry.

This patch is a slightly modified hunk extracted from
https://sourceware.org/ml/gdb-patches/2015-07/msg00353.html

gdb/testsuite/ChangeLog:

2016-03-09  Wei-cheng Wang  <cole945@gmail.com>
	    Marcin Kościelnicki  <koriakin@0x04.net>

	* gdb.trace/actions.c (gdb_recursion_test_fp): New typedef.
	(gdb_recursion_test_ptr): New global variable.
	(gdb_recursion_test): Call gdb_recursion_test_ptr instead of
	gdb_recursion_test.
	(gdb_c_test): Ditto.
2016-03-09 18:46:12 +01:00

158 lines
4.8 KiB
C

/* This testcase is part of GDB, the GNU debugger.
Copyright 1998-2016 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/>. */
/*
* Test program for trace action commands
*/
#include <string.h>
#include "trace-common.h"
static char gdb_char_test;
static short gdb_short_test;
static long gdb_long_test;
static char gdb_arr_test[25];
static struct GDB_STRUCT_TEST
{
char c;
short s;
long l;
int bfield : 11; /* collect bitfield */
char arr[25];
struct GDB_STRUCT_TEST *next;
} gdb_struct1_test, gdb_struct2_test, *gdb_structp_test, **gdb_structpp_test;
static union GDB_UNION_TEST
{
char c;
short s;
long l;
int bfield : 11; /* collect bitfield */
char arr[4];
union GDB_UNION_TEST *next;
} gdb_union1_test;
void gdb_recursion_test (int, int, int, int, int, int, int);
/* This function pointer is used to force the function to be called via
the global entry instead of local entry on ppc64le; otherwise, breakpoints
set at the global entry (i.e., '*foo') will not be hit. */
typedef void (*gdb_recursion_test_fp) (int, int, int, int, int, int, int);
gdb_recursion_test_fp gdb_recursion_test_ptr = gdb_recursion_test;
void gdb_recursion_test (int depth,
int q1,
int q2,
int q3,
int q4,
int q5,
int q6)
{ /* gdb_recursion_test line 0 */
int q = q1; /* gdbtestline 1 */
q1 = q2; /* gdbtestline 2 */
q2 = q3; /* gdbtestline 3 */
q3 = q4; /* gdbtestline 4 */
q4 = q5; /* gdbtestline 5 */
q5 = q6; /* gdbtestline 6 */
q6 = q; /* gdbtestline 7 */
if (depth--) /* gdbtestline 8 */
gdb_recursion_test_ptr (depth, q1, q2, q3, q4, q5, q6); /* gdbtestline 9 */
}
unsigned long gdb_c_test( unsigned long *parm )
{
char *p = "gdb_c_test";
char *ridiculously_long_variable_name_with_equally_long_string_assignment;
register long local_reg = 7;
static unsigned long local_static, local_static_sizeof;
long local_long;
unsigned long *stack_ptr;
unsigned long end_of_stack;
ridiculously_long_variable_name_with_equally_long_string_assignment =
"ridiculously long variable name with equally long string assignment";
local_static = 9;
local_static_sizeof = sizeof (struct GDB_STRUCT_TEST);
local_long = local_reg + 1;
stack_ptr = (unsigned long *) &local_long;
end_of_stack =
(unsigned long) &stack_ptr + sizeof(stack_ptr) + sizeof(end_of_stack) - 1;
gdb_char_test = gdb_struct1_test.c = (char) ((long) parm[1] & 0xff);
gdb_short_test = gdb_struct1_test.s = (short) ((long) parm[2] & 0xffff);
gdb_long_test = gdb_struct1_test.l = (long) ((long) parm[3] & 0xffffffff);
gdb_union1_test.l = (long) parm[4];
gdb_arr_test[0] = gdb_struct1_test.arr[0] = (char) ((long) parm[1] & 0xff);
gdb_arr_test[1] = gdb_struct1_test.arr[1] = (char) ((long) parm[2] & 0xff);
gdb_arr_test[2] = gdb_struct1_test.arr[2] = (char) ((long) parm[3] & 0xff);
gdb_arr_test[3] = gdb_struct1_test.arr[3] = (char) ((long) parm[4] & 0xff);
gdb_arr_test[4] = gdb_struct1_test.arr[4] = (char) ((long) parm[5] & 0xff);
gdb_arr_test[5] = gdb_struct1_test.arr[5] = (char) ((long) parm[6] & 0xff);
gdb_struct1_test.bfield = 144;
gdb_struct1_test.next = &gdb_struct2_test;
gdb_structp_test = &gdb_struct1_test;
gdb_structpp_test = &gdb_structp_test;
gdb_recursion_test_ptr (3, (long) parm[1], (long) parm[2], (long) parm[3],
(long) parm[4], (long) parm[5], (long) parm[6]);
gdb_char_test = gdb_short_test = gdb_long_test = 0;
gdb_structp_test = (void *) 0;
gdb_structpp_test = (void *) 0;
memset ((char *) &gdb_struct1_test, 0, sizeof (gdb_struct1_test));
memset ((char *) &gdb_struct2_test, 0, sizeof (gdb_struct2_test));
local_static_sizeof = 0;
local_static = 0;
return ( (unsigned long) 0 );
}
void gdb_asm_test (void)
{
}
static void begin () /* called before anything else */
{
}
static void end () /* called after everything else */
{
}
int
main (argc, argv, envp)
int argc;
char *argv[], **envp;
{
int i;
unsigned long myparms[10];
FAST_TRACEPOINT_LABEL (fast_tracepoint_loc);
begin ();
for (i = 0; i < sizeof (myparms) / sizeof (myparms[0]); i++)
myparms[i] = i;
gdb_c_test (&myparms[0]);
end ();
return 0;
}