1 |
1254 |
phoenix |
//==========================================================================
|
2 |
|
|
//
|
3 |
|
|
// signal2.cxx
|
4 |
|
|
//
|
5 |
|
|
// POSIX signal test 2
|
6 |
|
|
//
|
7 |
|
|
//==========================================================================
|
8 |
|
|
//####ECOSGPLCOPYRIGHTBEGIN####
|
9 |
|
|
// -------------------------------------------
|
10 |
|
|
// This file is part of eCos, the Embedded Configurable Operating System.
|
11 |
|
|
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
|
12 |
|
|
//
|
13 |
|
|
// eCos is free software; you can redistribute it and/or modify it under
|
14 |
|
|
// the terms of the GNU General Public License as published by the Free
|
15 |
|
|
// Software Foundation; either version 2 or (at your option) any later version.
|
16 |
|
|
//
|
17 |
|
|
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
|
18 |
|
|
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
19 |
|
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
20 |
|
|
// for more details.
|
21 |
|
|
//
|
22 |
|
|
// You should have received a copy of the GNU General Public License along
|
23 |
|
|
// with eCos; if not, write to the Free Software Foundation, Inc.,
|
24 |
|
|
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
25 |
|
|
//
|
26 |
|
|
// As a special exception, if other files instantiate templates or use macros
|
27 |
|
|
// or inline functions from this file, or you compile this file and link it
|
28 |
|
|
// with other works to produce a work based on this file, this file does not
|
29 |
|
|
// by itself cause the resulting work to be covered by the GNU General Public
|
30 |
|
|
// License. However the source code for this file must still be made available
|
31 |
|
|
// in accordance with section (3) of the GNU General Public License.
|
32 |
|
|
//
|
33 |
|
|
// This exception does not invalidate any other reasons why a work based on
|
34 |
|
|
// this file might be covered by the GNU General Public License.
|
35 |
|
|
//
|
36 |
|
|
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
|
37 |
|
|
// at http://sources.redhat.com/ecos/ecos-license/
|
38 |
|
|
// -------------------------------------------
|
39 |
|
|
//####ECOSGPLCOPYRIGHTEND####
|
40 |
|
|
//==========================================================================
|
41 |
|
|
//#####DESCRIPTIONBEGIN####
|
42 |
|
|
//
|
43 |
|
|
// Author(s): nickg
|
44 |
|
|
// Contributors: jlarmour
|
45 |
|
|
// Date: 2000-04-10
|
46 |
|
|
// Description: Tests POSIX signal functionality.
|
47 |
|
|
//
|
48 |
|
|
//####DESCRIPTIONEND####
|
49 |
|
|
//==========================================================================
|
50 |
|
|
|
51 |
|
|
#include <pkgconf/isoinfra.h>
|
52 |
|
|
#include <cyg/hal/hal_intr.h> // For exception codes
|
53 |
|
|
|
54 |
|
|
#include <sys/types.h>
|
55 |
|
|
#include <pthread.h>
|
56 |
|
|
#include <signal.h>
|
57 |
|
|
#include <semaphore.h>
|
58 |
|
|
|
59 |
|
|
#include <setjmp.h>
|
60 |
|
|
|
61 |
|
|
#include <cyg/infra/testcase.h>
|
62 |
|
|
|
63 |
|
|
#if CYGINT_ISO_SETJMP == 0
|
64 |
|
|
# define NA_MSG "Requires setjmp/longjmp implementation"
|
65 |
|
|
#elif !defined(CYGPKG_POSIX_SIGNALS)
|
66 |
|
|
# define NA_MSG "POSIX signals not enabled"
|
67 |
|
|
#endif
|
68 |
|
|
|
69 |
|
|
#ifdef NA_MSG
|
70 |
|
|
void
|
71 |
|
|
cyg_start(void)
|
72 |
|
|
{
|
73 |
|
|
CYG_TEST_INIT();
|
74 |
|
|
CYG_TEST_NA( NA_MSG );
|
75 |
|
|
}
|
76 |
|
|
#else
|
77 |
|
|
|
78 |
|
|
//--------------------------------------------------------------------------
|
79 |
|
|
// Local variables
|
80 |
|
|
|
81 |
|
|
static jmp_buf jbuf;
|
82 |
|
|
|
83 |
|
|
//--------------------------------------------------------------------------
|
84 |
|
|
|
85 |
|
|
// PowerPC is a special case as it has the alignment exception, but it
|
86 |
|
|
// doesn't trigger for this function unless in little-endian mode (although
|
87 |
|
|
// the exception exists for other instructions not used by this function so
|
88 |
|
|
// CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS will still be defined
|
89 |
|
|
|
90 |
|
|
#if defined(CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS) && !(defined(CYGPKG_HAL_POWERPC) && (CYG_BYTEORDER==CYG_MSBFIRST))
|
91 |
|
|
|
92 |
|
|
static void
|
93 |
|
|
cause_unaligned_access(void)
|
94 |
|
|
{
|
95 |
|
|
volatile int x;
|
96 |
|
|
volatile CYG_ADDRESS p=(CYG_ADDRESS) &jbuf;
|
97 |
|
|
|
98 |
|
|
x = *(volatile int *)(p+1);
|
99 |
|
|
|
100 |
|
|
} // cause_unaligned_access()
|
101 |
|
|
|
102 |
|
|
#endif
|
103 |
|
|
|
104 |
|
|
//--------------------------------------------------------------------------
|
105 |
|
|
|
106 |
|
|
#ifdef CYGNUM_HAL_EXCEPTION_DATA_ACCESS
|
107 |
|
|
|
108 |
|
|
static void
|
109 |
|
|
cause_illegal_access(void)
|
110 |
|
|
{
|
111 |
|
|
#ifdef CYGPKG_HAL_I386
|
112 |
|
|
|
113 |
|
|
// In the x86 architecture, although we have the DATA_ACCESS
|
114 |
|
|
// exception available, it is not possible to provoke it using the
|
115 |
|
|
// normal code of this test. This is because the normal segments we
|
116 |
|
|
// have installed in the segment registers cover all of memory. Instead we
|
117 |
|
|
// set GS to a descriptor that does not cover 0xF0000000-0xFFFFFFFF and
|
118 |
|
|
// poke at that.
|
119 |
|
|
|
120 |
|
|
__asm__ ( "movw $0x20,%%ax\n"
|
121 |
|
|
"movw %%ax,%%gs\n"
|
122 |
|
|
"movl %%gs:0xF0000000,%%eax\n"
|
123 |
|
|
:
|
124 |
|
|
:
|
125 |
|
|
: "eax"
|
126 |
|
|
);
|
127 |
|
|
|
128 |
|
|
#else
|
129 |
|
|
volatile int x;
|
130 |
|
|
volatile CYG_ADDRESS p=(CYG_ADDRESS) &jbuf;
|
131 |
|
|
|
132 |
|
|
do
|
133 |
|
|
{
|
134 |
|
|
x = *(volatile int *)(p);
|
135 |
|
|
p += (CYG_ADDRESS)0x100000;
|
136 |
|
|
} while( p != (CYG_ADDRESS)&jbuf );
|
137 |
|
|
|
138 |
|
|
#endif
|
139 |
|
|
} // cause_illegal_access()
|
140 |
|
|
|
141 |
|
|
#endif
|
142 |
|
|
|
143 |
|
|
//--------------------------------------------------------------------------
|
144 |
|
|
|
145 |
|
|
#ifdef CYGNUM_HAL_EXCEPTION_FPU_DIV_BY_ZERO
|
146 |
|
|
|
147 |
|
|
// num must always be 0 - do it this way in case the optimizer tries to
|
148 |
|
|
// get smart
|
149 |
|
|
|
150 |
|
|
static int
|
151 |
|
|
cause_fpe(int num)
|
152 |
|
|
{
|
153 |
|
|
double a;
|
154 |
|
|
|
155 |
|
|
a = 1.0/num; // Depending on FPU emulation and/or
|
156 |
|
|
// the FPU architecture, this may
|
157 |
|
|
// cause an exception.
|
158 |
|
|
// (float division by zero)
|
159 |
|
|
|
160 |
|
|
return ((int)a)/num; // This may cause an exception if
|
161 |
|
|
// the architecture supports it.
|
162 |
|
|
// (integer division by zero).
|
163 |
|
|
} // cause_fpe()
|
164 |
|
|
|
165 |
|
|
#endif
|
166 |
|
|
|
167 |
|
|
//--------------------------------------------------------------------------
|
168 |
|
|
// Signal handler functions
|
169 |
|
|
|
170 |
|
|
static void sigsegv( int signo )
|
171 |
|
|
{
|
172 |
|
|
CYG_TEST_INFO( "sigsegv() handler called" );
|
173 |
|
|
CYG_TEST_CHECK( signo == SIGSEGV, "Signal not SIGSEGV");
|
174 |
|
|
|
175 |
|
|
longjmp( jbuf, 1 );
|
176 |
|
|
}
|
177 |
|
|
|
178 |
|
|
static void sigbus( int signo )
|
179 |
|
|
{
|
180 |
|
|
CYG_TEST_INFO( "sigbus() handler called" );
|
181 |
|
|
CYG_TEST_CHECK( signo == SIGBUS, "Signal not SIGBUS");
|
182 |
|
|
|
183 |
|
|
longjmp( jbuf, 1 );
|
184 |
|
|
}
|
185 |
|
|
|
186 |
|
|
static void sigfpe( int signo )
|
187 |
|
|
{
|
188 |
|
|
CYG_TEST_INFO( "sigfpe() handler called" );
|
189 |
|
|
CYG_TEST_CHECK( signo == SIGFPE, "Signal not SIGFPE");
|
190 |
|
|
|
191 |
|
|
longjmp( jbuf, 1 );
|
192 |
|
|
}
|
193 |
|
|
|
194 |
|
|
|
195 |
|
|
//--------------------------------------------------------------------------
|
196 |
|
|
|
197 |
|
|
int main(int argc, char **argv)
|
198 |
|
|
{
|
199 |
|
|
int ret;
|
200 |
|
|
sigset_t mask;
|
201 |
|
|
struct sigaction sa;
|
202 |
|
|
|
203 |
|
|
CYG_TEST_INIT();
|
204 |
|
|
|
205 |
|
|
// Make a full signal set
|
206 |
|
|
sigfillset( &mask );
|
207 |
|
|
|
208 |
|
|
|
209 |
|
|
// Install signal handlers
|
210 |
|
|
|
211 |
|
|
sa.sa_mask = mask;
|
212 |
|
|
sa.sa_flags = 0;
|
213 |
|
|
|
214 |
|
|
sa.sa_handler = sigsegv;
|
215 |
|
|
ret = sigaction( SIGSEGV, &sa, NULL );
|
216 |
|
|
CYG_TEST_CHECK( ret == 0 , "sigaction returned error");
|
217 |
|
|
|
218 |
|
|
sa.sa_handler = sigbus;
|
219 |
|
|
ret = sigaction( SIGBUS, &sa, NULL );
|
220 |
|
|
CYG_TEST_CHECK( ret == 0 , "sigaction returned error");
|
221 |
|
|
|
222 |
|
|
sa.sa_handler = sigfpe;
|
223 |
|
|
ret = sigaction( SIGFPE, &sa, NULL );
|
224 |
|
|
CYG_TEST_CHECK( ret == 0 , "sigaction returned error");
|
225 |
|
|
|
226 |
|
|
// now make an empty signal set
|
227 |
|
|
sigemptyset( &mask );
|
228 |
|
|
|
229 |
|
|
// Now reset the various exception handlers to eCos handlers so that we
|
230 |
|
|
// have control; this is the target side equivalent of the CYG_TEST_GDBCMD
|
231 |
|
|
// lines above:
|
232 |
|
|
#ifdef HAL_VSR_SET_TO_ECOS_HANDLER
|
233 |
|
|
// Reclaim the VSR off CygMon possibly
|
234 |
|
|
#ifdef CYGNUM_HAL_EXCEPTION_DATA_ACCESS
|
235 |
|
|
HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DATA_ACCESS, NULL );
|
236 |
|
|
#endif
|
237 |
|
|
#ifdef CYGNUM_HAL_EXCEPTION_DATA_TLBMISS_ACCESS
|
238 |
|
|
HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DATA_TLBMISS_ACCESS, NULL );
|
239 |
|
|
#endif
|
240 |
|
|
#ifdef CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS
|
241 |
|
|
HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS, NULL );
|
242 |
|
|
#endif
|
243 |
|
|
#ifdef CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION
|
244 |
|
|
HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION, NULL );
|
245 |
|
|
#endif
|
246 |
|
|
#ifdef CYGNUM_HAL_EXCEPTION_FPU_DIV_BY_ZERO
|
247 |
|
|
HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_FPU_DIV_BY_ZERO, NULL );
|
248 |
|
|
#endif
|
249 |
|
|
#endif
|
250 |
|
|
|
251 |
|
|
// PowerPC is a special case as it has the alignment exception, but it
|
252 |
|
|
// doesn't trigger for this function unless in little-endian mode (although
|
253 |
|
|
// the exception exists for other instructions not used by this function so
|
254 |
|
|
// CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS will still be defined
|
255 |
|
|
|
256 |
|
|
#if defined(CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS) && !(defined(CYGPKG_HAL_POWERPC) && (CYG_BYTEORDER==CYG_MSBFIRST))
|
257 |
|
|
|
258 |
|
|
CYG_TEST_INFO("Test 1 - provoke unaligned access");
|
259 |
|
|
|
260 |
|
|
if( setjmp( jbuf ) == 0 )
|
261 |
|
|
{
|
262 |
|
|
pthread_sigmask( SIG_SETMASK, &mask, NULL );
|
263 |
|
|
cause_unaligned_access();
|
264 |
|
|
CYG_TEST_FAIL("Didn't cause exception");
|
265 |
|
|
}
|
266 |
|
|
|
267 |
|
|
#else
|
268 |
|
|
|
269 |
|
|
CYG_TEST_INFO("Test 1 - provoke unaligned access - not supported");
|
270 |
|
|
|
271 |
|
|
#endif
|
272 |
|
|
|
273 |
|
|
#ifdef CYGNUM_HAL_EXCEPTION_DATA_ACCESS
|
274 |
|
|
|
275 |
|
|
CYG_TEST_INFO("Test 2 - provoke illegal access");
|
276 |
|
|
|
277 |
|
|
if( setjmp( jbuf ) == 0 )
|
278 |
|
|
{
|
279 |
|
|
pthread_sigmask( SIG_SETMASK, &mask, NULL );
|
280 |
|
|
cause_illegal_access();
|
281 |
|
|
CYG_TEST_FAIL("Didn't cause exception");
|
282 |
|
|
}
|
283 |
|
|
|
284 |
|
|
#else
|
285 |
|
|
|
286 |
|
|
CYG_TEST_INFO("Test 1 - provoke illegal access - not supported");
|
287 |
|
|
|
288 |
|
|
#endif
|
289 |
|
|
|
290 |
|
|
#ifdef CYGNUM_HAL_EXCEPTION_FPU_DIV_BY_ZERO
|
291 |
|
|
|
292 |
|
|
CYG_TEST_INFO("Test 3 - provoke FP error");
|
293 |
|
|
|
294 |
|
|
if( setjmp( jbuf ) == 0 )
|
295 |
|
|
{
|
296 |
|
|
pthread_sigmask( SIG_SETMASK, &mask, NULL );
|
297 |
|
|
cause_fpe(0);
|
298 |
|
|
CYG_TEST_FAIL("Didn't cause exception");
|
299 |
|
|
}
|
300 |
|
|
|
301 |
|
|
#else
|
302 |
|
|
|
303 |
|
|
CYG_TEST_INFO("Test 3 - provoke FP error - not supported");
|
304 |
|
|
|
305 |
|
|
#endif
|
306 |
|
|
|
307 |
|
|
CYG_TEST_PASS_FINISH( "signal2" );
|
308 |
|
|
}
|
309 |
|
|
|
310 |
|
|
#endif // ifndef NA_MSG
|
311 |
|
|
|
312 |
|
|
//--------------------------------------------------------------------------
|
313 |
|
|
// end of signal1.c
|