gdb/testsuite/gdb.dwarf2/pr10770.c

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