stdlib/system.s

   1         .text
   2         .section        .rodata.str1.1,"aMS",@progbits,1
   3 .LC0:
   4         .string "sh"
   5 .LC1:
   6         .string "-c"
   7 .LC2:
   8         .string "/bin/sh"
   9         .text
  10         .p2align 4,,15
  11         .type   do_system, @function
  12 do_system:
  13         pushq   %r13
  14         pushq   %r12
  15         pushq   %rbp
  16         pushq   %rbx
  17         movq    %rdi, %rbp
  18         subq    $872, %rsp
  19         movl    $-1, 8(%rsp)
  20         movq    $1, 368(%rsp)
  21         movl    $0, 504(%rsp)
  22         movq    $0, 376(%rsp)
  23 #APP
  24 # 118 "../sysdeps/posix/system.c" 1
  25         movl %fs:24,%eax
  26 # 0 "" 2
  27 #NO_APP
  28         testl   %eax, %eax
  29         jne     .L2
  30         movl    $1, %edx
  31 #APP
  32 # 47 "../sysdeps/unix/sysv/linux/x86/lowlevellock.h" 1
  33         cmpxchgl %edx, lock(%rip)
  34 # 0 "" 2
  35 #NO_APP
  36 .L3:
  37         movl    sa_refcntr(%rip), %eax
  38         leaq    368(%rsp), %rbx
  39         leal    1(%rax), %edx
  40         testl   %eax, %eax
  41         movl    %edx, sa_refcntr(%rip)
  42         je      .L34
  43 .L4:
  44 #APP
  45 # 125 "../sysdeps/posix/system.c" 1
  46         movl %fs:24,%eax
  47 # 0 "" 2
  48 #NO_APP
  49         testl   %eax, %eax
  50         jne     .L5
  51         subl    $1, lock(%rip)
  52 .L6:
  53         leaq    112(%rsp), %r12
  54         leaq    8(%rbx), %rsi
  55         xorl    %edi, %edi
  56         orq     $65536, 376(%rsp)
  57         movq    %r12, %rdx
  58         call    __sigprocmask
  59         cmpq    $1, intr(%rip)
  60         movq    $0, 240(%rsp)
  61         je      .L7
  62         movq    $2, 240(%rsp)
  63 .L7:
  64         cmpq    $1, quit(%rip)
  65         je      .L8
  66         orq     $4, 240(%rsp)
  67 .L8:
  68         leaq    528(%rsp), %rbx
  69         movq    %rbx, %rdi
  70         call    __posix_spawnattr_init
  71         movq    %r12, %rsi
  72         movq    %rbx, %rdi
  73         call    __posix_spawnattr_setsigmask
  74         leaq    240(%rsp), %rsi
  75         movq    %rbx, %rdi
  76         call    __posix_spawnattr_setsigdefault
  77         movl    $12, %esi
  78         movq    %rbx, %rdi
  79         call    __posix_spawnattr_setflags
  80         leaq    .LC0(%rip), %rax
  81         movq    __environ(%rip), %r9
  82         leaq    12(%rsp), %rdi
  83         leaq    48(%rsp), %r8
  84         leaq    .LC2(%rip), %rsi
  85         xorl    %edx, %edx
  86         movq    %rax, 48(%rsp)
  87         leaq    .LC1(%rip), %rax
  88         movq    %rbx, %rcx
  89         movq    %rbp, 64(%rsp)
  90         movq    $0, 72(%rsp)
  91         movq    %rax, 56(%rsp)
  92         call    __posix_spawn
  93         movq    %rbx, %rdi
  94         movl    %eax, %ebp
  95         call    __posix_spawnattr_destroy
  96         testl   %ebp, %ebp
  97         jne     .L9
  98         leaq    quit(%rip), %rax
  99         movq    _pthread_cleanup_push_defer@GOTPCREL(%rip), %r13
 100         movl    12(%rsp), %edi
 101         movq    %rax, 16(%rsp)
 102         leaq    intr(%rip), %rax
 103         testq   %r13, %r13
 104         movl    %edi, 32(%rsp)
 105         movq    %rax, 24(%rsp)
 106         je      .L10
 107         leaq    80(%rsp), %rdi
 108         leaq    16(%rsp), %rdx
 109         leaq    cancel_handler(%rip), %rsi
 110         call    _pthread_cleanup_push_defer@PLT
 111         movl    12(%rsp), %edi
 112 .L11:
 113         leaq    8(%rsp), %rbx
 114         jmp     .L13
 115         .p2align 4,,10
 116         .p2align 3
 117 .L35:
 118         movq    __libc_errno@gottpoff(%rip), %rdx
 119         cmpl    $4, %fs:(%rdx)
 120         jne     .L14
 121 .L13:
 122         xorl    %edx, %edx
 123         movq    %rbx, %rsi
 124         call    __waitpid
 125         cmpl    $-1, %eax
 126         movl    12(%rsp), %edi
 127         je      .L35
 128 .L14:
 129         cmpl    %edi, %eax
 130         je      .L15
 131         movl    $-1, 8(%rsp)
 132 .L15:
 133         testq   %r13, %r13
 134         je      .L17
 135         leaq    80(%rsp), %rdi
 136         xorl    %esi, %esi
 137         call    _pthread_cleanup_pop_restore@PLT
 138         jmp     .L17
 139         .p2align 4,,10
 140         .p2align 3
 141 .L9:
 142         movl    $32512, 8(%rsp)
 143 .L17:
 144 #APP
 145 # 183 "../sysdeps/posix/system.c" 1
 146         movl %fs:24,%eax
 147 # 0 "" 2
 148 #NO_APP
 149         testl   %eax, %eax
 150         jne     .L18
 151         movl    $1, %edx
 152 #APP
 153 # 47 "../sysdeps/unix/sysv/linux/x86/lowlevellock.h" 1
 154         cmpxchgl %edx, lock(%rip)
 155 # 0 "" 2
 156 #NO_APP
 157 .L19:
 158         subl    $1, sa_refcntr(%rip)
 159         je      .L36
 160 .L20:
 161 #APP
 162 # 192 "../sysdeps/posix/system.c" 1
 163         movl %fs:24,%eax
 164 # 0 "" 2
 165 #NO_APP
 166         testl   %eax, %eax
 167         jne     .L21
 168         subl    $1, lock(%rip)
 169 .L22:
 170         testl   %ebp, %ebp
 171         je      .L23
 172         movq    __libc_errno@gottpoff(%rip), %rax
 173         movl    %ebp, %fs:(%rax)
 174 .L23:
 175         movl    8(%rsp), %eax
 176         addq    $872, %rsp
 177         popq    %rbx
 178         popq    %rbp
 179         popq    %r12
 180         popq    %r13
 181         ret
 182         .p2align 4,,10
 183         .p2align 3
 184 .L10:
 185         leaq    cancel_handler(%rip), %rax
 186         movq    %rax, 80(%rsp)
 187         leaq    16(%rsp), %rax
 188         movq    %rax, 88(%rsp)
 189         jmp     .L11
 190         .p2align 4,,10
 191         .p2align 3
 192 .L34:
 193         leaq    intr(%rip), %rdx
 194         movq    %rbx, %rsi
 195         movl    $2, %edi
 196         call    __sigaction
 197         leaq    quit(%rip), %rdx
 198         movq    %rbx, %rsi
 199         movl    $3, %edi
 200         call    __sigaction
 201         jmp     .L4
 202         .p2align 4,,10
 203         .p2align 3
 204 .L36:
 205         leaq    intr(%rip), %rsi
 206         xorl    %edx, %edx
 207         movl    $2, %edi
 208         call    __sigaction
 209         leaq    quit(%rip), %rsi
 210         xorl    %edx, %edx
 211         movl    $3, %edi
 212         call    __sigaction
 213         xorl    %edx, %edx
 214         movq    %r12, %rsi
 215         movl    $2, %edi
 216         call    __sigprocmask
 217         jmp     .L20
 218         .p2align 4,,10
 219         .p2align 3
 220 .L2:
 221         xorl    %eax, %eax
 222         movl    $1, %edx
 223         lock cmpxchgl   %edx, lock(%rip)
 224         je      .L3
 225         leaq    lock(%rip), %rdi
 226         call    __lll_lock_wait_private
 227         jmp     .L3
 228         .p2align 4,,10
 229         .p2align 3
 230 .L18:
 231         xorl    %eax, %eax
 232         movl    $1, %edx
 233         lock cmpxchgl   %edx, lock(%rip)
 234         je      .L19
 235         leaq    lock(%rip), %rdi
 236         call    __lll_lock_wait_private
 237         jmp     .L19
 238         .p2align 4,,10
 239         .p2align 3
 240 .L5:
 241         xorl    %eax, %eax
 242 #APP
 243 # 125 "../sysdeps/posix/system.c" 1
 244         xchgl %eax, lock(%rip)
 245 # 0 "" 2
 246 #NO_APP
 247         cmpl    $1, %eax
 248         jle     .L6
 249         xorl    %r10d, %r10d
 250         movl    $1, %edx
 251         movl    $129, %esi
 252         leaq    lock(%rip), %rdi
 253         movl    $202, %eax
 254 #APP
 255 # 125 "../sysdeps/posix/system.c" 1
 256         syscall
 257
 258 # 0 "" 2
 259 #NO_APP
 260         jmp     .L6
 261         .p2align 4,,10
 262         .p2align 3
 263 .L21:
 264         xorl    %eax, %eax
 265 #APP
 266 # 192 "../sysdeps/posix/system.c" 1
 267         xchgl %eax, lock(%rip)
 268 # 0 "" 2
 269 #NO_APP
 270         cmpl    $1, %eax
 271         jle     .L22
 272         xorl    %r10d, %r10d
 273         movl    $1, %edx
 274         movl    $129, %esi
 275         leaq    lock(%rip), %rdi
 276         movl    $202, %eax
 277 #APP
 278 # 192 "../sysdeps/posix/system.c" 1
 279         syscall
 280
 281 # 0 "" 2
 282 #NO_APP
 283         jmp     .L22
 284         .size   do_system, .-do_system
 285         .p2align 4,,15
 286         .type   cancel_handler, @function
 287 cancel_handler:
 288         pushq   %rbp
 289         pushq   %rbx
 290         movl    $9, %esi
 291         movq    %rdi, %rbx
 292         movl    $62, %eax
 293         subq    $24, %rsp
 294         movl    16(%rdi), %edi
 295 #APP
 296 # 43 "../sysdeps/unix/sysv/linux/not-errno.h" 1
 297         syscall
 298
 299 # 0 "" 2
 300 #NO_APP
 301         movq    __pthread_setcancelstate@GOTPCREL(%rip), %rbp
 302         testq   %rbp, %rbp
 303         je      .L40
 304         leaq    12(%rsp), %rsi
 305         movl    $1, %edi
 306         call    __pthread_setcancelstate@PLT
 307         jmp     .L40
 308         .p2align 4,,10
 309         .p2align 3
 310 .L55:
 311         movq    __libc_errno@gottpoff(%rip), %rax
 312         cmpl    $4, %fs:(%rax)
 313         jne     .L39
 314 .L40:
 315         movl    16(%rbx), %edi
 316         xorl    %edx, %edx
 317         xorl    %esi, %esi
 318         call    __waitpid
 319         cmpl    $-1, %eax
 320         je      .L55
 321 .L39:
 322         testq   %rbp, %rbp
 323         je      .L41
 324         movl    12(%rsp), %edi
 325         xorl    %esi, %esi
 326         call    __pthread_setcancelstate@PLT
 327 .L41:
 328 #APP
 329 # 90 "../sysdeps/posix/system.c" 1
 330         movl %fs:24,%eax
 331 # 0 "" 2
 332 #NO_APP
 333         testl   %eax, %eax
 334         jne     .L42
 335         movl    $1, %edx
 336 #APP
 337 # 47 "../sysdeps/unix/sysv/linux/x86/lowlevellock.h" 1
 338         cmpxchgl %edx, lock(%rip)
 339 # 0 "" 2
 340 #NO_APP
 341 .L43:
 342         subl    $1, sa_refcntr(%rip)
 343         je      .L56
 344 .L44:
 345 #APP
 346 # 96 "../sysdeps/posix/system.c" 1
 347         movl %fs:24,%eax
 348 # 0 "" 2
 349 #NO_APP
 350         testl   %eax, %eax
 351         jne     .L45
 352         subl    $1, lock(%rip)
 353 .L37:
 354         addq    $24, %rsp
 355         popq    %rbx
 356         popq    %rbp
 357         ret
 358         .p2align 4,,10
 359         .p2align 3
 360 .L56:
 361         movq    (%rbx), %rsi
 362         xorl    %edx, %edx
 363         movl    $3, %edi
 364         call    __sigaction
 365         movq    8(%rbx), %rsi
 366         xorl    %edx, %edx
 367         movl    $2, %edi
 368         call    __sigaction
 369         jmp     .L44
 370         .p2align 4,,10
 371         .p2align 3
 372 .L42:
 373         xorl    %eax, %eax
 374         movl    $1, %edx
 375         lock cmpxchgl   %edx, lock(%rip)
 376         je      .L43
 377         leaq    lock(%rip), %rdi
 378         call    __lll_lock_wait_private
 379         jmp     .L43
 380         .p2align 4,,10
 381         .p2align 3
 382 .L45:
 383         xorl    %eax, %eax
 384 #APP
 385 # 96 "../sysdeps/posix/system.c" 1
 386         xchgl %eax, lock(%rip)
 387 # 0 "" 2
 388 #NO_APP
 389         cmpl    $1, %eax
 390         jle     .L37
 391         xorl    %r10d, %r10d
 392         movl    $1, %edx
 393         movl    $129, %esi
 394         leaq    lock(%rip), %rdi
 395         movl    $202, %eax
 396 #APP
 397 # 96 "../sysdeps/posix/system.c" 1
 398         syscall
 399
 400 # 0 "" 2
 401 #NO_APP
 402         jmp     .L37
 403         .size   cancel_handler, .-cancel_handler
 404         .section        .rodata.str1.1
 405 .LC3:
 406         .string "exit 0"
 407         .text
 408         .p2align 4,,15
 409         .globl  __libc_system
 410         .type   __libc_system, @function
 411 __libc_system:
 412         testq   %rdi, %rdi
 413         je      .L61
 414         jmp     do_system
 415         .p2align 4,,10
 416         .p2align 3
 417 .L61:
 418         leaq    .LC3(%rip), %rdi
 419         subq    $8, %rsp
 420         call    do_system
 421         testl   %eax, %eax
 422         sete    %al
 423         addq    $8, %rsp
 424         movzbl  %al, %eax
 425         ret
 426         .size   __libc_system, .-__libc_system
 427         .weak   system
 428         .set    system,__libc_system
 429         .local  lock
 430         .comm   lock,4,4
 431         .local  sa_refcntr
 432         .comm   sa_refcntr,4,4
 433         .local  quit
 434         .comm   quit,152,32
 435         .local  intr
 436         .comm   intr,152,32
 437         .weak   __pthread_setcancelstate
 438         .weak   _pthread_cleanup_pop_restore
 439         .weak   _pthread_cleanup_push_defer
 440         .hidden __lll_lock_wait_private
 441         .hidden __sigaction
 442         .hidden __waitpid
 443         .hidden __posix_spawnattr_destroy
 444         .hidden __posix_spawn
 445         .hidden __posix_spawnattr_setflags
 446         .hidden __posix_spawnattr_setsigdefault
 447         .hidden __posix_spawnattr_setsigmask
 448         .hidden __posix_spawnattr_init
 449         .hidden __sigprocmask