gdb/testsuite/gdb.arch/amd64-tailcall-self.S

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2015-2023 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 /* This source file was generated by:
  19    gcc -o gdb.arch/amd64-tailcall-self.S -S gdb.arch/amd64-tailcall-self.c -Wall -g -dA -Os
  20    */
  21
  22         .file   "amd64-tailcall-self.c"
  23         .text
  24 .Ltext0:
  25         .section        .text.unlikely,"ax",@progbits
  26 .LCOLDB0:
  27         .text
  28 .LHOTB0:
  29         .section        .text.unlikely
  30 .Ltext_cold0:
  31         .text
  32         .type   b, @function
  33 b:
  34 .LFB0:
  35         .file 1 "amd64-tailcall-self.c"
  36         # amd64-tailcall-self.c:1
  37         .loc 1 1 0
  38         .cfi_startproc
  39 # BLOCK 2 freq:10000 seq:0
  40 # PRED: ENTRY [100.0%]  (FALLTHRU)
  41         # amd64-tailcall-self.c:2
  42         .loc 1 2 0
  43 # SUCC: EXIT [100.0%]
  44         ret
  45         .cfi_endproc
  46 .LFE0:
  47         .size   b, .-b
  48         .section        .text.unlikely
  49 .LCOLDE0:
  50         .text
  51 .LHOTE0:
  52         .section        .text.unlikely
  53 .LCOLDB1:
  54         .text
  55 .LHOTB1:
  56         .globl  c
  57         .type   c, @function
  58 c:
  59 .LFB1:
  60         # amd64-tailcall-self.c:7
  61         .loc 1 7 0
  62         .cfi_startproc
  63 .LVL0:
  64 # BLOCK 2 freq:10000 seq:0
  65 # PRED: ENTRY [100.0%]  (FALLTHRU)
  66         # amd64-tailcall-self.c:8
  67         .loc 1 8 0
  68         leal    1(%rdi), %eax
  69 # SUCC: EXIT [100.0%]
  70         # amd64-tailcall-self.c:9
  71         .loc 1 9 0
  72         ret
  73         .cfi_endproc
  74 .LFE1:
  75         .size   c, .-c
  76         .section        .text.unlikely
  77 .LCOLDE1:
  78         .text
  79 .LHOTE1:
  80         .section        .text.unlikely
  81 .LCOLDB2:
  82         .text
  83 .LHOTB2:
  84         .globl  a
  85         .type   a, @function
  86 a:
  87 .LFB2:
  88         # amd64-tailcall-self.c:11
  89         .loc 1 11 0
  90         .cfi_startproc
  91 .LVL1:
  92 # BLOCK 2 freq:10000 seq:0
  93 # PRED: ENTRY [100.0%]  (FALLTHRU) 3 [100.0%]  (DFS_BACK,CAN_FALLTHRU)
  94 .L5:
  95         # amd64-tailcall-self.c:12
  96         .loc 1 12 0
  97 #APP
  98 # 12 "amd64-tailcall-self.c" 1
  99         nop;nop;nop
 100 # 0 "" 2
 101         # amd64-tailcall-self.c:13
 102         .loc 1 13 0
 103 #NO_APP
 104         movl    i(%rip), %edi
 105         leal    -1(%rdi), %eax
 106         cmpl    $9, %eax
 107 # SUCC: 3 [91.0%]  (FALLTHRU,CAN_FALLTHRU) 4 [9.0%]  (CAN_FALLTHRU,LOOP_EXIT)
 108         ja      .L4
 109 # BLOCK 3 freq:9100 seq:1
 110 # PRED: 2 [91.0%]  (FALLTHRU,CAN_FALLTHRU)
 111         # amd64-tailcall-self.c:14
 112         .loc 1 14 0
 113         orl     $1, %edi
 114         movl    %edi, i(%rip)
 115 # SUCC: 2 [100.0%]  (DFS_BACK,CAN_FALLTHRU)
 116         jmp     .L5
 117 .Lfirsttailcall:
 118 # BLOCK 4 freq:900 seq:2
 119 # PRED: 2 [9.0%]  (CAN_FALLTHRU,LOOP_EXIT)
 120 .L4:
 121         # amd64-tailcall-self.c:16
 122         .loc 1 16 0
 123         cmpl    $0, %edi
 124 # SUCC: 5 [19.9%]  (FALLTHRU,CAN_FALLTHRU) 6 [80.1%]  (CAN_FALLTHRU)
 125         jne     .L3
 126 # BLOCK 5 freq:179 seq:3
 127 # PRED: 4 [19.9%]  (FALLTHRU,CAN_FALLTHRU)
 128 # SUCC: EXIT [100.0%]  (ABNORMAL,SIBCALL)
 129         # amd64-tailcall-self.c:17
 130         .loc 1 17 0
 131         jmp     b
 132 .LVL2:
 133 # BLOCK 6 freq:721 seq:4
 134 # PRED: 4 [80.1%]  (CAN_FALLTHRU)
 135 .L3:
 136 # SUCC: EXIT [100.0%]
 137         ret
 138         .cfi_endproc
 139 .LFE2:
 140         .size   a, .-a
 141         .section        .text.unlikely
 142 .LCOLDE2:
 143         .text
 144 .LHOTE2:
 145         .section        .text.unlikely
 146 .LCOLDB3:
 147         .section        .text.startup,"ax",@progbits
 148 .LHOTB3:
 149         .globl  main
 150         .type   main, @function
 151 main:
 152 .LFB3:
 153         # amd64-tailcall-self.c:20
 154         .loc 1 20 0
 155         .cfi_startproc
 156 .LVL3:
 157 # BLOCK 2 freq:10000 seq:0
 158 # PRED: ENTRY [100.0%]  (FALLTHRU)
 159         # amd64-tailcall-self.c:21
 160         .loc 1 21 0
 161         call    a
 162 .LVL4:
 163         # amd64-tailcall-self.c:23
 164         .loc 1 23 0
 165         xorl    %eax, %eax
 166 # SUCC: EXIT [100.0%]
 167         ret
 168         .cfi_endproc
 169 .LFE3:
 170         .size   main, .-main
 171         .section        .text.unlikely
 172 .LCOLDE3:
 173         .section        .text.startup
 174 .LHOTE3:
 175         .comm   i,4,4
 176         .text
 177 .Letext0:
 178         .section        .text.unlikely
 179 .Letext_cold0:
 180         .section        .debug_info,"",@progbits
 181 .Ldebug_info0:
 182         .long   2f-1f   # Length of Compilation Unit Info
 183 1:
 184         .value  0x4     # DWARF version number
 185         .long   .Ldebug_abbrev0 # Offset Into Abbrev. Section
 186         .byte   0x8     # Pointer Size (in bytes)
 187         .uleb128 0x1    # (DIE (0xb) DW_TAG_compile_unit)
 188         .long   .LASF4  # DW_AT_producer: "GNU C 4.9.2 20150212 (Red Hat 4.9.2-6) -mtune=generic -march=x86-64 -g -Os"
 189         .byte   0x1     # DW_AT_language
 190         .long   .LASF5  # DW_AT_name: "amd64-tailcall-self.c"
 191         .long   .LASF6  # DW_AT_comp_dir: "/home/jkratoch/t"
 192         .long   .Ldebug_ranges0+0       # DW_AT_ranges
 193         .quad   0       # DW_AT_low_pc
 194         .long   .Ldebug_line0   # DW_AT_stmt_list
 195 die29:
 196         .uleb128 0x2    # (DIE (0x29) DW_TAG_subprogram)
 197         .ascii "b\0"    # DW_AT_name
 198         .byte   0x1     # DW_AT_decl_file (amd64-tailcall-self.c)
 199         .byte   0x1     # DW_AT_decl_line
 200                         # DW_AT_prototyped
 201         .quad   .LFB0   # DW_AT_low_pc
 202         .quad   .LFE0-.LFB0     # DW_AT_high_pc
 203         .uleb128 0x1    # DW_AT_frame_base
 204         .byte   0x9c    # DW_OP_call_frame_cfa
 205                         # DW_AT_GNU_all_call_sites
 206         .uleb128 0x3    # (DIE (0x40) DW_TAG_subprogram)
 207                         # DW_AT_external
 208         .ascii "c\0"    # DW_AT_name
 209         .byte   0x1     # DW_AT_decl_file (amd64-tailcall-self.c)
 210         .byte   0x7     # DW_AT_decl_line
 211                         # DW_AT_prototyped
 212         .long   die6b - .Ldebug_info0   # DW_AT_type
 213         .quad   .LFB1   # DW_AT_low_pc
 214         .quad   .LFE1-.LFB1     # DW_AT_high_pc
 215         .uleb128 0x1    # DW_AT_frame_base
 216         .byte   0x9c    # DW_OP_call_frame_cfa
 217                         # DW_AT_GNU_all_call_sites
 218         .uleb128 0x4    # (DIE (0x5f) DW_TAG_formal_parameter)
 219         .ascii "q\0"    # DW_AT_name
 220         .byte   0x1     # DW_AT_decl_file (amd64-tailcall-self.c)
 221         .byte   0x7     # DW_AT_decl_line
 222         .long   die6b - .Ldebug_info0   # DW_AT_type
 223         .uleb128 0x1    # DW_AT_location
 224         .byte   0x55    # DW_OP_reg5
 225         .byte   0       # end of children of DIE 0x40
 226 die6b:
 227         .uleb128 0x5    # (DIE (0x6b) DW_TAG_base_type)
 228         .byte   0x4     # DW_AT_byte_size
 229         .byte   0x5     # DW_AT_encoding
 230         .ascii "int\0"  # DW_AT_name
 231 die72:
 232         .uleb128 0x6    # (DIE (0x72) DW_TAG_subprogram)
 233                         # DW_AT_external
 234         .ascii "a\0"    # DW_AT_name
 235         .byte   0x1     # DW_AT_decl_file (amd64-tailcall-self.c)
 236         .byte   0xb     # DW_AT_decl_line
 237                         # DW_AT_prototyped
 238         .quad   .LFB2   # DW_AT_low_pc
 239         .quad   .LFE2-.LFB2     # DW_AT_high_pc
 240         .uleb128 0x1    # DW_AT_frame_base
 241         .byte   0x9c    # DW_OP_call_frame_cfa
 242                         # DW_AT_GNU_all_call_sites
 243         .uleb128 0x4    # (DIE (0x8d) DW_TAG_formal_parameter)
 244         .ascii "q\0"    # DW_AT_name
 245         .byte   0x1     # DW_AT_decl_file (amd64-tailcall-self.c)
 246         .byte   0xb     # DW_AT_decl_line
 247         .long   die6b - .Ldebug_info0   # DW_AT_type
 248         .uleb128 0x4    # DW_AT_location
 249         .byte   0xf3    # DW_OP_GNU_entry_value
 250         .uleb128 0x1
 251         .byte   0x55    # DW_OP_reg5
 252         .byte   0x9f    # DW_OP_stack_value
 253         .uleb128 0x7    # (DIE () DW_TAG_GNU_call_site)
 254         .quad   .Lfirsttailcall # DW_AT_low_pc
 255                         # DW_AT_GNU_tail_call
 256         .long   die72 - .Ldebug_info0   # DW_AT_abstract_origin
 257         .uleb128 0x7    # (DIE (0x9b) DW_TAG_GNU_call_site)
 258         .quad   .LVL2   # DW_AT_low_pc
 259                         # DW_AT_GNU_tail_call
 260         .long   die29 - .Ldebug_info0   # DW_AT_abstract_origin
 261         .byte   0       # end of children of DIE 0x72
 262         .uleb128 0x8    # (DIE (0xa9) DW_TAG_subprogram)
 263                         # DW_AT_external
 264         .long   .LASF0  # DW_AT_name: "main"
 265         .byte   0x1     # DW_AT_decl_file (amd64-tailcall-self.c)
 266         .byte   0x14    # DW_AT_decl_line
 267                         # DW_AT_prototyped
 268         .long   die6b - .Ldebug_info0   # DW_AT_type
 269         .quad   .LFB3   # DW_AT_low_pc
 270         .quad   .LFE3-.LFB3     # DW_AT_high_pc
 271         .uleb128 0x1    # DW_AT_frame_base
 272         .byte   0x9c    # DW_OP_call_frame_cfa
 273                         # DW_AT_GNU_all_call_sites
 274         .uleb128 0x9    # (DIE (0xca) DW_TAG_formal_parameter)
 275         .long   .LASF1  # DW_AT_name: "argc"
 276         .byte   0x1     # DW_AT_decl_file (amd64-tailcall-self.c)
 277         .byte   0x14    # DW_AT_decl_line
 278         .long   die6b - .Ldebug_info0   # DW_AT_type
 279         .long   .LLST0  # DW_AT_location
 280         .uleb128 0x9    # (DIE (0xd9) DW_TAG_formal_parameter)
 281         .long   .LASF2  # DW_AT_name: "argv"
 282         .byte   0x1     # DW_AT_decl_file (amd64-tailcall-self.c)
 283         .byte   0x14    # DW_AT_decl_line
 284         .long   diefe - .Ldebug_info0   # DW_AT_type
 285         .long   .LLST1  # DW_AT_location
 286         .uleb128 0xa    # (DIE (0xe8) DW_TAG_GNU_call_site)
 287         .quad   .LVL4   # DW_AT_low_pc
 288         .long   die72 - .Ldebug_info0   # DW_AT_abstract_origin
 289         .uleb128 0xb    # (DIE (0xf5) DW_TAG_GNU_call_site_parameter)
 290         .uleb128 0x1    # DW_AT_location
 291         .byte   0x55    # DW_OP_reg5
 292         .uleb128 0x3    # DW_AT_GNU_call_site_value
 293         .byte   0xf3    # DW_OP_GNU_entry_value
 294         .uleb128 0x1
 295         .byte   0x55    # DW_OP_reg5
 296         .byte   0       # end of children of DIE 0xe8
 297         .byte   0       # end of children of DIE 0xa9
 298 diefe:
 299         .uleb128 0xc    # (DIE (0xfe) DW_TAG_pointer_type)
 300         .byte   0x8     # DW_AT_byte_size
 301         .long   die104 - .Ldebug_info0  # DW_AT_type
 302 die104:
 303         .uleb128 0xc    # (DIE (0x104) DW_TAG_pointer_type)
 304         .byte   0x8     # DW_AT_byte_size
 305         .long   die10a - .Ldebug_info0  # DW_AT_type
 306 die10a:
 307         .uleb128 0xd    # (DIE (0x10a) DW_TAG_base_type)
 308         .byte   0x1     # DW_AT_byte_size
 309         .byte   0x6     # DW_AT_encoding
 310         .long   .LASF3  # DW_AT_name: "char"
 311         .uleb128 0xe    # (DIE (0x111) DW_TAG_variable)
 312         .ascii "i\0"    # DW_AT_name
 313         .byte   0x1     # DW_AT_decl_file (amd64-tailcall-self.c)
 314         .byte   0x5     # DW_AT_decl_line
 315         .long   die6b - .Ldebug_info0   # DW_AT_type
 316                         # DW_AT_external
 317         .uleb128 0x9    # DW_AT_location
 318         .byte   0x3     # DW_OP_addr
 319         .quad   i
 320         .byte   0       # end of children of DIE 0xb
 321 2:
 322         .section        .debug_abbrev,"",@progbits
 323 .Ldebug_abbrev0:
 324         .uleb128 0x1    # (abbrev code)
 325         .uleb128 0x11   # (TAG: DW_TAG_compile_unit)
 326         .byte   0x1     # DW_children_yes
 327         .uleb128 0x25   # (DW_AT_producer)
 328         .uleb128 0xe    # (DW_FORM_strp)
 329         .uleb128 0x13   # (DW_AT_language)
 330         .uleb128 0xb    # (DW_FORM_data1)
 331         .uleb128 0x3    # (DW_AT_name)
 332         .uleb128 0xe    # (DW_FORM_strp)
 333         .uleb128 0x1b   # (DW_AT_comp_dir)
 334         .uleb128 0xe    # (DW_FORM_strp)
 335         .uleb128 0x55   # (DW_AT_ranges)
 336         .uleb128 0x17   # (DW_FORM_sec_offset)
 337         .uleb128 0x11   # (DW_AT_low_pc)
 338         .uleb128 0x1    # (DW_FORM_addr)
 339         .uleb128 0x10   # (DW_AT_stmt_list)
 340         .uleb128 0x17   # (DW_FORM_sec_offset)
 341         .byte   0
 342         .byte   0
 343         .uleb128 0x2    # (abbrev code)
 344         .uleb128 0x2e   # (TAG: DW_TAG_subprogram)
 345         .byte   0       # DW_children_no
 346         .uleb128 0x3    # (DW_AT_name)
 347         .uleb128 0x8    # (DW_FORM_string)
 348         .uleb128 0x3a   # (DW_AT_decl_file)
 349         .uleb128 0xb    # (DW_FORM_data1)
 350         .uleb128 0x3b   # (DW_AT_decl_line)
 351         .uleb128 0xb    # (DW_FORM_data1)
 352         .uleb128 0x27   # (DW_AT_prototyped)
 353         .uleb128 0x19   # (DW_FORM_flag_present)
 354         .uleb128 0x11   # (DW_AT_low_pc)
 355         .uleb128 0x1    # (DW_FORM_addr)
 356         .uleb128 0x12   # (DW_AT_high_pc)
 357         .uleb128 0x7    # (DW_FORM_data8)
 358         .uleb128 0x40   # (DW_AT_frame_base)
 359         .uleb128 0x18   # (DW_FORM_exprloc)
 360         .uleb128 0x2117 # (DW_AT_GNU_all_call_sites)
 361         .uleb128 0x19   # (DW_FORM_flag_present)
 362         .byte   0
 363         .byte   0
 364         .uleb128 0x3    # (abbrev code)
 365         .uleb128 0x2e   # (TAG: DW_TAG_subprogram)
 366         .byte   0x1     # DW_children_yes
 367         .uleb128 0x3f   # (DW_AT_external)
 368         .uleb128 0x19   # (DW_FORM_flag_present)
 369         .uleb128 0x3    # (DW_AT_name)
 370         .uleb128 0x8    # (DW_FORM_string)
 371         .uleb128 0x3a   # (DW_AT_decl_file)
 372         .uleb128 0xb    # (DW_FORM_data1)
 373         .uleb128 0x3b   # (DW_AT_decl_line)
 374         .uleb128 0xb    # (DW_FORM_data1)
 375         .uleb128 0x27   # (DW_AT_prototyped)
 376         .uleb128 0x19   # (DW_FORM_flag_present)
 377         .uleb128 0x49   # (DW_AT_type)
 378         .uleb128 0x13   # (DW_FORM_ref4)
 379         .uleb128 0x11   # (DW_AT_low_pc)
 380         .uleb128 0x1    # (DW_FORM_addr)
 381         .uleb128 0x12   # (DW_AT_high_pc)
 382         .uleb128 0x7    # (DW_FORM_data8)
 383         .uleb128 0x40   # (DW_AT_frame_base)
 384         .uleb128 0x18   # (DW_FORM_exprloc)
 385         .uleb128 0x2117 # (DW_AT_GNU_all_call_sites)
 386         .uleb128 0x19   # (DW_FORM_flag_present)
 387         .byte   0
 388         .byte   0
 389         .uleb128 0x4    # (abbrev code)
 390         .uleb128 0x5    # (TAG: DW_TAG_formal_parameter)
 391         .byte   0       # DW_children_no
 392         .uleb128 0x3    # (DW_AT_name)
 393         .uleb128 0x8    # (DW_FORM_string)
 394         .uleb128 0x3a   # (DW_AT_decl_file)
 395         .uleb128 0xb    # (DW_FORM_data1)
 396         .uleb128 0x3b   # (DW_AT_decl_line)
 397         .uleb128 0xb    # (DW_FORM_data1)
 398         .uleb128 0x49   # (DW_AT_type)
 399         .uleb128 0x13   # (DW_FORM_ref4)
 400         .uleb128 0x2    # (DW_AT_location)
 401         .uleb128 0x18   # (DW_FORM_exprloc)
 402         .byte   0
 403         .byte   0
 404         .uleb128 0x5    # (abbrev code)
 405         .uleb128 0x24   # (TAG: DW_TAG_base_type)
 406         .byte   0       # DW_children_no
 407         .uleb128 0xb    # (DW_AT_byte_size)
 408         .uleb128 0xb    # (DW_FORM_data1)
 409         .uleb128 0x3e   # (DW_AT_encoding)
 410         .uleb128 0xb    # (DW_FORM_data1)
 411         .uleb128 0x3    # (DW_AT_name)
 412         .uleb128 0x8    # (DW_FORM_string)
 413         .byte   0
 414         .byte   0
 415         .uleb128 0x6    # (abbrev code)
 416         .uleb128 0x2e   # (TAG: DW_TAG_subprogram)
 417         .byte   0x1     # DW_children_yes
 418         .uleb128 0x3f   # (DW_AT_external)
 419         .uleb128 0x19   # (DW_FORM_flag_present)
 420         .uleb128 0x3    # (DW_AT_name)
 421         .uleb128 0x8    # (DW_FORM_string)
 422         .uleb128 0x3a   # (DW_AT_decl_file)
 423         .uleb128 0xb    # (DW_FORM_data1)
 424         .uleb128 0x3b   # (DW_AT_decl_line)
 425         .uleb128 0xb    # (DW_FORM_data1)
 426         .uleb128 0x27   # (DW_AT_prototyped)
 427         .uleb128 0x19   # (DW_FORM_flag_present)
 428         .uleb128 0x11   # (DW_AT_low_pc)
 429         .uleb128 0x1    # (DW_FORM_addr)
 430         .uleb128 0x12   # (DW_AT_high_pc)
 431         .uleb128 0x7    # (DW_FORM_data8)
 432         .uleb128 0x40   # (DW_AT_frame_base)
 433         .uleb128 0x18   # (DW_FORM_exprloc)
 434         .uleb128 0x2117 # (DW_AT_GNU_all_call_sites)
 435         .uleb128 0x19   # (DW_FORM_flag_present)
 436         .byte   0
 437         .byte   0
 438         .uleb128 0x7    # (abbrev code)
 439         .uleb128 0x4109 # (TAG: DW_TAG_GNU_call_site)
 440         .byte   0       # DW_children_no
 441         .uleb128 0x11   # (DW_AT_low_pc)
 442         .uleb128 0x1    # (DW_FORM_addr)
 443         .uleb128 0x2115 # (DW_AT_GNU_tail_call)
 444         .uleb128 0x19   # (DW_FORM_flag_present)
 445         .uleb128 0x31   # (DW_AT_abstract_origin)
 446         .uleb128 0x13   # (DW_FORM_ref4)
 447         .byte   0
 448         .byte   0
 449         .uleb128 0x8    # (abbrev code)
 450         .uleb128 0x2e   # (TAG: DW_TAG_subprogram)
 451         .byte   0x1     # DW_children_yes
 452         .uleb128 0x3f   # (DW_AT_external)
 453         .uleb128 0x19   # (DW_FORM_flag_present)
 454         .uleb128 0x3    # (DW_AT_name)
 455         .uleb128 0xe    # (DW_FORM_strp)
 456         .uleb128 0x3a   # (DW_AT_decl_file)
 457         .uleb128 0xb    # (DW_FORM_data1)
 458         .uleb128 0x3b   # (DW_AT_decl_line)
 459         .uleb128 0xb    # (DW_FORM_data1)
 460         .uleb128 0x27   # (DW_AT_prototyped)
 461         .uleb128 0x19   # (DW_FORM_flag_present)
 462         .uleb128 0x49   # (DW_AT_type)
 463         .uleb128 0x13   # (DW_FORM_ref4)
 464         .uleb128 0x11   # (DW_AT_low_pc)
 465         .uleb128 0x1    # (DW_FORM_addr)
 466         .uleb128 0x12   # (DW_AT_high_pc)
 467         .uleb128 0x7    # (DW_FORM_data8)
 468         .uleb128 0x40   # (DW_AT_frame_base)
 469         .uleb128 0x18   # (DW_FORM_exprloc)
 470         .uleb128 0x2117 # (DW_AT_GNU_all_call_sites)
 471         .uleb128 0x19   # (DW_FORM_flag_present)
 472         .byte   0
 473         .byte   0
 474         .uleb128 0x9    # (abbrev code)
 475         .uleb128 0x5    # (TAG: DW_TAG_formal_parameter)
 476         .byte   0       # DW_children_no
 477         .uleb128 0x3    # (DW_AT_name)
 478         .uleb128 0xe    # (DW_FORM_strp)
 479         .uleb128 0x3a   # (DW_AT_decl_file)
 480         .uleb128 0xb    # (DW_FORM_data1)
 481         .uleb128 0x3b   # (DW_AT_decl_line)
 482         .uleb128 0xb    # (DW_FORM_data1)
 483         .uleb128 0x49   # (DW_AT_type)
 484         .uleb128 0x13   # (DW_FORM_ref4)
 485         .uleb128 0x2    # (DW_AT_location)
 486         .uleb128 0x17   # (DW_FORM_sec_offset)
 487         .byte   0
 488         .byte   0
 489         .uleb128 0xa    # (abbrev code)
 490         .uleb128 0x4109 # (TAG: DW_TAG_GNU_call_site)
 491         .byte   0x1     # DW_children_yes
 492         .uleb128 0x11   # (DW_AT_low_pc)
 493         .uleb128 0x1    # (DW_FORM_addr)
 494         .uleb128 0x31   # (DW_AT_abstract_origin)
 495         .uleb128 0x13   # (DW_FORM_ref4)
 496         .byte   0
 497         .byte   0
 498         .uleb128 0xb    # (abbrev code)
 499         .uleb128 0x410a # (TAG: DW_TAG_GNU_call_site_parameter)
 500         .byte   0       # DW_children_no
 501         .uleb128 0x2    # (DW_AT_location)
 502         .uleb128 0x18   # (DW_FORM_exprloc)
 503         .uleb128 0x2111 # (DW_AT_GNU_call_site_value)
 504         .uleb128 0x18   # (DW_FORM_exprloc)
 505         .byte   0
 506         .byte   0
 507         .uleb128 0xc    # (abbrev code)
 508         .uleb128 0xf    # (TAG: DW_TAG_pointer_type)
 509         .byte   0       # DW_children_no
 510         .uleb128 0xb    # (DW_AT_byte_size)
 511         .uleb128 0xb    # (DW_FORM_data1)
 512         .uleb128 0x49   # (DW_AT_type)
 513         .uleb128 0x13   # (DW_FORM_ref4)
 514         .byte   0
 515         .byte   0
 516         .uleb128 0xd    # (abbrev code)
 517         .uleb128 0x24   # (TAG: DW_TAG_base_type)
 518         .byte   0       # DW_children_no
 519         .uleb128 0xb    # (DW_AT_byte_size)
 520         .uleb128 0xb    # (DW_FORM_data1)
 521         .uleb128 0x3e   # (DW_AT_encoding)
 522         .uleb128 0xb    # (DW_FORM_data1)
 523         .uleb128 0x3    # (DW_AT_name)
 524         .uleb128 0xe    # (DW_FORM_strp)
 525         .byte   0
 526         .byte   0
 527         .uleb128 0xe    # (abbrev code)
 528         .uleb128 0x34   # (TAG: DW_TAG_variable)
 529         .byte   0       # DW_children_no
 530         .uleb128 0x3    # (DW_AT_name)
 531         .uleb128 0x8    # (DW_FORM_string)
 532         .uleb128 0x3a   # (DW_AT_decl_file)
 533         .uleb128 0xb    # (DW_FORM_data1)
 534         .uleb128 0x3b   # (DW_AT_decl_line)
 535         .uleb128 0xb    # (DW_FORM_data1)
 536         .uleb128 0x49   # (DW_AT_type)
 537         .uleb128 0x13   # (DW_FORM_ref4)
 538         .uleb128 0x3f   # (DW_AT_external)
 539         .uleb128 0x19   # (DW_FORM_flag_present)
 540         .uleb128 0x2    # (DW_AT_location)
 541         .uleb128 0x18   # (DW_FORM_exprloc)
 542         .byte   0
 543         .byte   0
 544         .byte   0
 545         .section        .debug_loc,"",@progbits
 546 .Ldebug_loc0:
 547 .LLST0:
 548         .quad   .LVL3   # Location list begin address (*.LLST0)
 549         .quad   .LVL4-1 # Location list end address (*.LLST0)
 550         .value  0x1     # Location expression size
 551         .byte   0x55    # DW_OP_reg5
 552         .quad   .LVL4-1 # Location list begin address (*.LLST0)
 553         .quad   .LFE3   # Location list end address (*.LLST0)
 554         .value  0x4     # Location expression size
 555         .byte   0xf3    # DW_OP_GNU_entry_value
 556         .uleb128 0x1
 557         .byte   0x55    # DW_OP_reg5
 558         .byte   0x9f    # DW_OP_stack_value
 559         .quad   0       # Location list terminator begin (*.LLST0)
 560         .quad   0       # Location list terminator end (*.LLST0)
 561 .LLST1:
 562         .quad   .LVL3   # Location list begin address (*.LLST1)
 563         .quad   .LVL4-1 # Location list end address (*.LLST1)
 564         .value  0x1     # Location expression size
 565         .byte   0x54    # DW_OP_reg4
 566         .quad   .LVL4-1 # Location list begin address (*.LLST1)
 567         .quad   .LFE3   # Location list end address (*.LLST1)
 568         .value  0x4     # Location expression size
 569         .byte   0xf3    # DW_OP_GNU_entry_value
 570         .uleb128 0x1
 571         .byte   0x54    # DW_OP_reg4
 572         .byte   0x9f    # DW_OP_stack_value
 573         .quad   0       # Location list terminator begin (*.LLST1)
 574         .quad   0       # Location list terminator end (*.LLST1)
 575         .section        .debug_aranges,"",@progbits
 576         .long   0x3c    # Length of Address Ranges Info
 577         .value  0x2     # DWARF Version
 578         .long   .Ldebug_info0   # Offset of Compilation Unit Info
 579         .byte   0x8     # Size of Address
 580         .byte   0       # Size of Segment Descriptor
 581         .value  0       # Pad to 16 byte boundary
 582         .value  0
 583         .quad   .Ltext0 # Address
 584         .quad   .Letext0-.Ltext0        # Length
 585         .quad   .LFB3   # Address
 586         .quad   .LFE3-.LFB3     # Length
 587         .quad   0
 588         .quad   0
 589         .section        .debug_ranges,"",@progbits
 590 .Ldebug_ranges0:
 591         .quad   .Ltext0 # Offset 0
 592         .quad   .Letext0
 593         .quad   .LFB3   # Offset 0x10
 594         .quad   .LFE3
 595         .quad   0
 596         .quad   0
 597         .section        .debug_line,"",@progbits
 598 .Ldebug_line0:
 599         .section        .debug_str,"MS",@progbits,1
 600 .LASF1:
 601         .string "argc"
 602 .LASF0:
 603         .string "main"
 604 .LASF4:
 605         .string "GNU C 4.9.2 20150212 (Red Hat 4.9.2-6) -mtune=generic -march=x86-64 -g -Os"
 606 .LASF5:
 607         .string "amd64-tailcall-self.c"
 608 .LASF6:
 609         .string ""
 610 .LASF3:
 611         .string "char"
 612 .LASF2:
 613         .string "argv"
 614         .ident  "GCC: (GNU) 4.9.2 20150212 (Red Hat 4.9.2-6)"
 615         .section        .note.GNU-stack,"",@progbits