1 /* This test is expected to FAIL to compile with
2 -fcompare-debug -fno-asynchronous-unwind-tables -fno-exceptions
3 because in that case, the __GCC_HAVE_DWARF2_CFI_ASM macro is only
4 defined during -g compilation and not defined with -g0. */
5 /* HP-UX libunwind.so doesn't provide _UA_END_OF_STACK */
6 /* { dg-do run } */
7 /* { dg-options "-fexceptions" } */
8 /* { dg-skip-if "" { "ia64-*-hpux11.*" } } */
9 /* { dg-skip-if "" { ! nonlocal_goto } } */
10 /* { dg-require-effective-target exceptions } */
11 /* Verify DW_OP_* handling in the unwinder. */
12
13 #include <unwind.h>
14 #include <stdlib.h>
15 #include <string.h>
16
17 /* #define OP_addr(x) 0x06, ... */
18 #define OP_deref 0x06,
19 #define SLEB128(x) (x)&0x7f /* Assume here the value is -0x40 ... 0x3f. */
20 #define ULEB128(x) (x)&0x7f /* Assume here the value is 0 ... 0x7f. */
21 #define VAL1(x) (x)&0xff
22 #if defined (__BIG_ENDIAN__)
23 #define VAL2(x) ((x)>>8)&0xff,(x)&0xff
24 #define VAL4(x) ((x)>>24)&0xff,((x)>>16)&0xff,((x)>>8)&0xff,(x)&0xff
25 #define VAL8(x) ((x)>>56)&0xff,((x)>>48)&0xff,((x)>>40)&0xff,((x)>>32)&0xff,((x)>>24)&0xff,((x)>>16)&0xff,((x)>>8)&0xff,(x)&0xff
26 #elif defined(__LITTLE_ENDIAN__) || defined(__x86_64__) || defined(__i386__)
27 #define VAL2(x) (x)&0xff,((x)>>8)&0xff
28 #define VAL4(x) (x)&0xff,((x)>>8)&0xff,((x)>>16)&0xff,((x)>>24)&0xff
29 #define VAL8(x) (x)&0xff,((x)>>8)&0xff,((x)>>16)&0xff,((x)>>24)&0xff,((x)>>32)&0xff,((x)>>40)&0xff,((x)>>48)&0xff,((x)>>56)&0xff
30 #endif
31 #define OP_const1u(x) 0x08,VAL1(x),
32 #define OP_const1s(x) 0x09,VAL1(x),
33 #define OP_const2u(x) 0x0a,VAL2(x),
34 #define OP_const2s(x) 0x0b,VAL2(x),
35 #define OP_const4u(x) 0x0c,VAL4(x),
36 #define OP_const4s(x) 0x0d,VAL4(x),
37 #define OP_const8u(x) 0x0e,VAL8(x),
38 #define OP_const8s(x) 0x0f,VAL8(x),
39 #define OP_constu(x) 0x10,ULEB128(x),
40 #define OP_consts(x) 0x11,SLEB128(x),
41 #define OP_dup 0x12,
42 #define OP_drop 0x13,
43 #define OP_over 0x14,
44 #define OP_pick(x) 0x15,VAL1(x),
45 #define OP_swap 0x16,
46 #define OP_rot 0x17,
47 #define OP_xderef 0x18,
48 #define OP_abs 0x19,
49 #define OP_and 0x1a,
50 #define OP_div 0x1b,
51 #define OP_minus 0x1c,
52 #define OP_mod 0x1d,
53 #define OP_mul 0x1e,
54 #define OP_neg 0x1f,
55 #define OP_not 0x20,
56 #define OP_or 0x21,
57 #define OP_plus 0x22,
58 #define OP_plus_uconst(x) 0x23,ULEB128(x),
59 #define OP_shl 0x24,
60 #define OP_shr 0x25,
61 #define OP_shra 0x26,
62 #define OP_xor 0x27,
63 #define OP_bra(x) 0x28,VAL2(x),
64 #define OP_eq 0x29,
65 #define OP_ge 0x2a,
66 #define OP_gt 0x2b,
67 #define OP_le 0x2c,
68 #define OP_lt 0x2d,
69 #define OP_ne 0x2e,
70 #define OP_skip(x) 0x2f,VAL2(x),
71 #define OP_lit0 0x30,
72 #define OP_lit1 0x31,
73 #define OP_lit2 0x32,
74 #define OP_lit3 0x33,
75 #define OP_lit4 0x34,
76 #define OP_lit5 0x35,
77 #define OP_lit6 0x36,
78 #define OP_lit7 0x37,
79 #define OP_lit8 0x38,
80 #define OP_lit9 0x39,
81 #define OP_lit10 0x3a,
82 #define OP_lit11 0x3b,
83 #define OP_lit12 0x3c,
84 #define OP_lit13 0x3d,
85 #define OP_lit14 0x3e,
86 #define OP_lit15 0x3f,
87 #define OP_lit16 0x40,
88 #define OP_lit17 0x41,
89 #define OP_lit18 0x42,
90 #define OP_lit19 0x43,
91 #define OP_lit20 0x44,
92 #define OP_lit21 0x45,
93 #define OP_lit22 0x46,
94 #define OP_lit23 0x47,
95 #define OP_lit24 0x48,
96 #define OP_lit25 0x49,
97 #define OP_lit26 0x4a,
98 #define OP_lit27 0x4b,
99 #define OP_lit28 0x4c,
100 #define OP_lit29 0x4d,
101 #define OP_lit30 0x4e,
102 #define OP_lit31 0x4f,
103 #define OP_reg0 0x50,
104 #define OP_reg1 0x51,
105 #define OP_reg2 0x52,
106 #define OP_reg3 0x53,
107 #define OP_reg4 0x54,
108 #define OP_reg5 0x55,
109 #define OP_reg6 0x56,
110 #define OP_reg7 0x57,
111 #define OP_reg8 0x58,
112 #define OP_reg9 0x59,
113 #define OP_reg10 0x5a,
114 #define OP_reg11 0x5b,
115 #define OP_reg12 0x5c,
116 #define OP_reg13 0x5d,
117 #define OP_reg14 0x5e,
118 #define OP_reg15 0x5f,
119 #define OP_reg16 0x60,
120 #define OP_reg17 0x61,
121 #define OP_reg18 0x62,
122 #define OP_reg19 0x63,
123 #define OP_reg20 0x64,
124 #define OP_reg21 0x65,
125 #define OP_reg22 0x66,
126 #define OP_reg23 0x67,
127 #define OP_reg24 0x68,
128 #define OP_reg25 0x69,
129 #define OP_reg26 0x6a,
130 #define OP_reg27 0x6b,
131 #define OP_reg28 0x6c,
132 #define OP_reg29 0x6d,
133 #define OP_reg30 0x6e,
134 #define OP_reg31 0x6f,
135 #define OP_breg0(x) 0x70,SLEB128(x),
136 #define OP_breg1(x) 0x71,SLEB128(x),
137 #define OP_breg2(x) 0x72,SLEB128(x),
138 #define OP_breg3(x) 0x73,SLEB128(x),
139 #define OP_breg4(x) 0x74,SLEB128(x),
140 #define OP_breg5(x) 0x75,SLEB128(x),
141 #define OP_breg6(x) 0x76,SLEB128(x),
142 #define OP_breg7(x) 0x77,SLEB128(x),
143 #define OP_breg8(x) 0x78,SLEB128(x),
144 #define OP_breg9(x) 0x79,SLEB128(x),
145 #define OP_breg10(x) 0x7a,SLEB128(x),
146 #define OP_breg11(x) 0x7b,SLEB128(x),
147 #define OP_breg12(x) 0x7c,SLEB128(x),
148 #define OP_breg13(x) 0x7d,SLEB128(x),
149 #define OP_breg14(x) 0x7e,SLEB128(x),
150 #define OP_breg15(x) 0x7f,SLEB128(x),
151 #define OP_breg16(x) 0x80,SLEB128(x),
152 #define OP_breg17(x) 0x81,SLEB128(x),
153 #define OP_breg18(x) 0x82,SLEB128(x),
154 #define OP_breg19(x) 0x83,SLEB128(x),
155 #define OP_breg20(x) 0x84,SLEB128(x),
156 #define OP_breg21(x) 0x85,SLEB128(x),
157 #define OP_breg22(x) 0x86,SLEB128(x),
158 #define OP_breg23(x) 0x87,SLEB128(x),
159 #define OP_breg24(x) 0x88,SLEB128(x),
160 #define OP_breg25(x) 0x89,SLEB128(x),
161 #define OP_breg26(x) 0x8a,SLEB128(x),
162 #define OP_breg27(x) 0x8b,SLEB128(x),
163 #define OP_breg28(x) 0x8c,SLEB128(x),
164 #define OP_breg29(x) 0x8d,SLEB128(x),
165 #define OP_breg30(x) 0x8e,SLEB128(x),
166 #define OP_breg31(x) 0x8f,SLEB128(x),
167 #define OP_regx(x) 0x90,SLEB128(x),
168 #define OP_fbreg(x) 0x91,SLEB128(x),
169 #define OP_bregx(x,y) 0x92,ULEB128(x),SLEB128(y),
170 #define OP_piece(x) 0x93,ULEB128(x),
171 #define OP_deref_size(x) 0x94,VAL1(x),
172 #define OP_xderef_size(x) 0x95,VAL1(x),
173 #define OP_nop 0x96,
174 #define OP_nop_termination 0x96
175 #define OP_push_object_address 0x97,
176 #define OP_call2(x) 0x98,VAL2(x),
177 #define OP_call4(x) 0x99,VAL4(x),
178 /* #define OP_call_ref(x) 0x9a,... */
179 #define OP_form_tls_address(x) 0x9b,
180 #define OP_call_frame_cfa 0x9c,
181 #define OP_bit_piece(x) 0x9d,ULEB128(x),
182 /* #define OP_implicit_value(x...) 0x9e,... */
183 #define OP_stack_value 0x9f,
184 #define OP_GNU_push_tls_address 0xe0,
185 /* #define OP_GNU_encoded_addr(x...) 0xf1, */
186
187 #define ASSERT_TOS_NON0 OP_bra(3) OP_skip(-3)
188 #define ASSERT_TOS_0 OP_lit0 OP_eq ASSERT_TOS_NON0
189
190 /* Initially there is CFA value on the stack, we want to
191 keep it there at the end. */
192 #define CFI_PROGRAM \
193 OP_lit0 OP_nop ASSERT_TOS_0 \
194 OP_lit1 ASSERT_TOS_NON0 \
195 OP_lit1 OP_const1u(1) OP_eq ASSERT_TOS_NON0 \
196 OP_lit16 OP_const2u(16) OP_eq ASSERT_TOS_NON0 \
197 OP_lit31 OP_const4u(31) OP_ne ASSERT_TOS_0 \
198 OP_lit1 OP_neg OP_const1s(-1) OP_eq ASSERT_TOS_NON0 \
199 OP_lit16 OP_neg OP_const2s(-16) OP_ne ASSERT_TOS_0 \
200 OP_lit31 OP_const4s(-31) OP_neg OP_ne ASSERT_TOS_0 \
201 OP_lit7 OP_dup OP_plus_uconst(2) OP_lit9 OP_eq ASSERT_TOS_NON0 \
202 OP_lit7 OP_eq ASSERT_TOS_NON0 \
203 OP_lit20 OP_lit1 OP_drop OP_lit20 OP_eq ASSERT_TOS_NON0 \
204 OP_lit17 OP_lit19 OP_over OP_lit17 OP_eq ASSERT_TOS_NON0 \
205 OP_lit19 OP_eq ASSERT_TOS_NON0 OP_lit17 OP_eq ASSERT_TOS_NON0 \
206 OP_lit1 OP_lit2 OP_lit3 OP_lit4 OP_pick(2) OP_lit2 OP_eq ASSERT_TOS_NON0\
207 OP_lit4 OP_eq ASSERT_TOS_NON0 OP_lit3 OP_eq ASSERT_TOS_NON0 \
208 OP_pick(0) OP_lit2 OP_eq ASSERT_TOS_NON0 \
209 OP_lit2 OP_eq ASSERT_TOS_NON0 OP_lit1 OP_eq ASSERT_TOS_NON0 \
210 OP_lit6 OP_lit12 OP_swap OP_lit6 OP_eq ASSERT_TOS_NON0 \
211 OP_lit12 OP_eq ASSERT_TOS_NON0 \
212 OP_lit7 OP_lit8 OP_lit9 OP_rot OP_lit8 OP_eq ASSERT_TOS_NON0 \
213 OP_lit7 OP_eq ASSERT_TOS_NON0 OP_lit9 OP_eq ASSERT_TOS_NON0 \
214 OP_lit7 OP_abs OP_lit7 OP_eq ASSERT_TOS_NON0 \
215 OP_const1s(-123) OP_abs OP_const1u(123) OP_eq ASSERT_TOS_NON0 \
216 OP_lit3 OP_lit6 OP_and OP_lit2 OP_eq ASSERT_TOS_NON0 \
217 OP_lit3 OP_lit6 OP_or OP_lit7 OP_eq ASSERT_TOS_NON0 \
218 OP_lit17 OP_lit2 OP_minus OP_lit15 OP_eq ASSERT_TOS_NON0 \
219 /* Divide is signed truncating toward zero. */ \
220 OP_const1s(-6) OP_const1s(-2) OP_div OP_lit3 OP_eq ASSERT_TOS_NON0 \
221 OP_const1s(-7) OP_const1s(3) OP_div OP_const1s(-2) \
222 OP_eq ASSERT_TOS_NON0 \
223 /* Modulo is unsigned. */ \
224 OP_const1s(-6) OP_const1s(-4) OP_mod OP_const1s(-6) \
225 OP_eq ASSERT_TOS_NON0 \
226 OP_const1s(-6) OP_lit4 OP_mod OP_lit2 OP_eq ASSERT_TOS_NON0 \
227 OP_lit6 OP_const1s(-4) OP_mod OP_lit6 OP_eq ASSERT_TOS_NON0 \
228 /* Signed modulo can be implemented using "over over div mul minus". */\
229 OP_const1s(-6) OP_const1s(-4) OP_over OP_over OP_div OP_mul OP_minus \
230 OP_const1s(-2) OP_eq ASSERT_TOS_NON0 \
231 OP_const1s(-7) OP_lit3 OP_over OP_over OP_div OP_mul OP_minus \
232 OP_const1s(-1) OP_eq ASSERT_TOS_NON0 \
233 OP_lit7 OP_const1s(-3) OP_over OP_over OP_div OP_mul OP_minus \
234 OP_lit1 OP_eq ASSERT_TOS_NON0 \
235 OP_lit16 OP_lit31 OP_plus_uconst(1) OP_mul OP_const2u(512) \
236 OP_eq ASSERT_TOS_NON0 \
237 OP_lit5 OP_not OP_lit31 OP_and OP_lit26 OP_eq ASSERT_TOS_NON0 \
238 OP_lit12 OP_lit31 OP_plus OP_const1u(43) OP_eq ASSERT_TOS_NON0 \
239 OP_const1s(-6) OP_lit2 OP_plus OP_const1s(-4) OP_eq ASSERT_TOS_NON0 \
240 OP_const1s(-6) OP_plus_uconst(3) OP_const1s(-3) OP_eq ASSERT_TOS_NON0 \
241 OP_lit16 OP_lit4 OP_shl OP_const2u(256) OP_eq ASSERT_TOS_NON0 \
242 OP_lit16 OP_lit3 OP_shr OP_lit2 OP_eq ASSERT_TOS_NON0 \
243 OP_const1s(-16) OP_lit3 OP_shra OP_const1s(-2) OP_eq ASSERT_TOS_NON0 \
244 OP_lit3 OP_lit6 OP_xor OP_lit5 OP_eq ASSERT_TOS_NON0 \
245 OP_lit3 OP_lit6 OP_le ASSERT_TOS_NON0 \
246 OP_lit3 OP_lit3 OP_le ASSERT_TOS_NON0 \
247 OP_lit6 OP_lit3 OP_le ASSERT_TOS_0 \
248 OP_lit3 OP_lit6 OP_lt ASSERT_TOS_NON0 \
249 OP_lit3 OP_lit3 OP_lt ASSERT_TOS_0 \
250 OP_lit6 OP_lit3 OP_lt ASSERT_TOS_0 \
251 OP_lit3 OP_lit6 OP_ge ASSERT_TOS_0 \
252 OP_lit3 OP_lit3 OP_ge ASSERT_TOS_NON0 \
253 OP_lit6 OP_lit3 OP_ge ASSERT_TOS_NON0 \
254 OP_lit3 OP_lit6 OP_gt ASSERT_TOS_0 \
255 OP_lit3 OP_lit3 OP_gt ASSERT_TOS_0 \
256 OP_lit6 OP_lit3 OP_gt ASSERT_TOS_NON0 \
257 OP_const1s(-6) OP_lit1 OP_shr OP_lit0 OP_gt ASSERT_TOS_NON0 \
258 OP_const1s(-6) OP_lit1 OP_shra OP_lit0 OP_lt ASSERT_TOS_NON0
259
260 #define CFI_ESCAPE_VAL_2(VALUES...) #VALUES
261 #define CFI_ESCAPE_VAL_1(VALUES...) CFI_ESCAPE_VAL_2(VALUES)
262 #define CFI_ESCAPE_VAL(VALUES...) CFI_ESCAPE_VAL_1(VALUES)
263 #define CFI_ESCAPE do { } while (0)
264 #define CFI_ARCH_PROGRAM OP_nop_termination
265 #ifdef __GCC_HAVE_DWARF2_CFI_ASM
266 #if defined (__x86_64__)
267 #undef CFI_ESCAPE
268 #undef CFI_ARCH_PROGRAM
269 #define CFI_ARCH_PROGRAM CFI_PROGRAM OP_lit8 OP_minus OP_nop_termination
270 unsigned char cfi_arch_program[] = { CFI_ARCH_PROGRAM };
271 extern char verify_it[sizeof (cfi_arch_program) - 0x80 < 0x3f80 ? 1 : -1];
272 /* DW_CFA_expression %rip, uleb128(l2-l1), l1: program DW_OP_lit8 DW_OP_minus DW_OP_nop l2: */
273 #define CFI_ESCAPE \
274 asm volatile (".cfi_escape 0x10, 0x10, (%P0&0x7f)+0x80, %P0>>7, " \
275 CFI_ESCAPE_VAL (CFI_ARCH_PROGRAM) \
276 : : "i" (sizeof (cfi_arch_program)))
277 #elif defined (__i386__)
278 #undef CFI_ESCAPE
279 #undef CFI_ARCH_PROGRAM
280 #define CFI_ARCH_PROGRAM CFI_PROGRAM OP_lit4 OP_minus OP_nop_termination
281 unsigned char cfi_arch_program[] = { CFI_ARCH_PROGRAM };
282 extern char verify_it[sizeof (cfi_arch_program) - 0x80 < 0x3f80 ? 1 : -1];
283 /* DW_CFA_expression %eip, uleb128(l2-l1), l1: program DW_OP_lit4 DW_OP_minus DW_OP_nop l2: */
284 #define CFI_ESCAPE \
285 asm volatile (".cfi_escape 0x10, 8, (%P0&0x7f)+0x80, %P0>>7, " \
286 CFI_ESCAPE_VAL (CFI_ARCH_PROGRAM) \
287 : : "i" (sizeof (cfi_arch_program)))
288 #endif
289 #endif
290 static _Unwind_Reason_Code
force_unwind_stop(int version,_Unwind_Action actions,_Unwind_Exception_Class exc_class,struct _Unwind_Exception * exc_obj,struct _Unwind_Context * context,void * stop_parameter)291 force_unwind_stop (int version, _Unwind_Action actions,
292 _Unwind_Exception_Class exc_class,
293 struct _Unwind_Exception *exc_obj,
294 struct _Unwind_Context *context,
295 void *stop_parameter)
296 {
297 if (actions & _UA_END_OF_STACK)
298 abort ();
299 return _URC_NO_REASON;
300 }
301
force_unwind()302 static void force_unwind ()
303 {
304 struct _Unwind_Exception *exc = malloc (sizeof (*exc));
305 memset (&exc->exception_class, 0, sizeof (exc->exception_class));
306 exc->exception_cleanup = 0;
307
308 #ifndef __USING_SJLJ_EXCEPTIONS__
309 _Unwind_ForcedUnwind (exc, force_unwind_stop, 0);
310 #else
311 _Unwind_SjLj_ForcedUnwind (exc, force_unwind_stop, 0);
312 #endif
313
314 abort ();
315 }
316
handler(void * p)317 static void handler (void *p __attribute__((unused)))
318 {
319 exit (0);
320 }
321
callme()322 __attribute__((noinline)) static void callme ()
323 {
324 CFI_ESCAPE;
325 force_unwind ();
326 }
327
doit()328 __attribute__((noinline)) static void doit ()
329 {
330 char dummy __attribute__((cleanup (handler)));
331 callme ();
332 }
333
main()334 int main()
335 {
336 doit ();
337 abort ();
338 }
339