posix/fork.shared.s

   1         .text
   2 #APP
   3         memmove = __GI_memmove
   4         memset = __GI_memset
   5         memcpy = __GI_memcpy
   6 #NO_APP
   7         .p2align 4,,15
   8         .globl  __libc_fork
   9         .type   __libc_fork, @function
  10 __libc_fork:
  11         pushq   %r12
  12         pushq   %rbp
  13         pushq   %rbx
  14         subq    $176, %rsp
  15 #APP
  16 # 57 "../sysdeps/nptl/fork.c" 1
  17         movl %fs:24,%ebx
  18 # 0 "" 2
  19 #NO_APP
  20         xorl    %ebp, %ebp
  21         testl   %ebx, %ebx
  22         setne   %bpl
  23         xorl    %edi, %edi
  24         movl    %ebp, %esi
  25         call    __run_fork_handlers
  26         testl   %ebx, %ebx
  27         jne     .L27
  28 .L2:
  29         movq    %fs:16, %rax
  30         xorl    %r8d, %r8d
  31         xorl    %edx, %edx
  32         xorl    %esi, %esi
  33         movl    $18874385, %edi
  34         leaq    720(%rax), %r10
  35         movl    $56, %eax
  36 #APP
  37 # 49 "../sysdeps/unix/sysv/linux/arch-fork.h" 1
  38         syscall
  39
  40 # 0 "" 2
  41 #NO_APP
  42         cmpq    $-4096, %rax
  43         ja      .L28
  44         testl   %eax, %eax
  45         movl    %eax, %r12d
  46         jne     .L4
  47         movq    __fork_generation_pointer(%rip), %rax
  48         movq    %fs:16, %rdi
  49         testq   %rax, %rax
  50         je      .L5
  51         addq    $4, (%rax)
  52 .L5:
  53         leaq    736(%rdi), %rax
  54         movq    %rax, 728(%rdi)
  55         movq    %rax, 736(%rdi)
  56         movl    __libc_pthread_functions_init(%rip), %eax
  57         testl   %eax, %eax
  58         jne     .L29
  59 .L6:
  60         testl   %ebx, %ebx
  61         jne     .L30
  62 .L7:
  63         movq    _rtld_global@GOTPCREL(%rip), %rax
  64         pxor    %xmm0, %xmm0
  65         movl    %ebp, %esi
  66         movl    $1, %edi
  67         movups  %xmm0, 2456(%rax)
  68         movq    $0, 2472(%rax)
  69         movl    $1, 2456(%rax)
  70         movups  %xmm0, 2440(%rax)
  71         call    __run_fork_handlers
  72         addq    $176, %rsp
  73         movl    %r12d, %eax
  74         popq    %rbx
  75         popq    %rbp
  76         popq    %r12
  77         ret
  78         .p2align 4,,10
  79         .p2align 3
  80 .L28:
  81         movq    __libc_errno@gottpoff(%rip), %rdx
  82         negl    %eax
  83         movl    $-1, %r12d
  84         movl    %eax, %fs:(%rdx)
  85 .L4:
  86         testl   %ebx, %ebx
  87         jne     .L31
  88         movl    %ebp, %esi
  89         movl    $2, %edi
  90         call    __run_fork_handlers
  91 .L33:
  92         addq    $176, %rsp
  93         movl    %r12d, %eax
  94         popq    %rbx
  95         popq    %rbp
  96         popq    %r12
  97         ret
  98         .p2align 4,,10
  99         .p2align 3
 100 .L27:
 101         movq    %rsp, %rdi
 102         call    __nss_database_fork_prepare_parent
 103         call    __GI__IO_list_lock
 104         call    __malloc_fork_lock_parent
 105         jmp     .L2
 106         .p2align 4,,10
 107         .p2align 3
 108 .L30:
 109         call    __malloc_fork_unlock_child
 110         call    __GI__IO_iter_begin
 111         movq    %rax, %rbx
 112         jmp     .L8
 113         .p2align 4,,10
 114         .p2align 3
 115 .L9:
 116         movq    %rbx, %rdi
 117         call    __GI__IO_iter_next
 118         movq    %rax, %rbx
 119 .L8:
 120         call    __GI__IO_iter_end
 121         cmpq    %rax, %rbx
 122         je      .L32
 123         movq    %rbx, %rdi
 124         call    __GI__IO_iter_file
 125         movl    (%rax), %eax
 126         testb   $-128, %ah
 127         jne     .L9
 128         movq    %rbx, %rdi
 129         call    __GI__IO_iter_file
 130         movq    136(%rax), %rax
 131         movq    $0, (%rax)
 132         movq    $0, 8(%rax)
 133         jmp     .L9
 134         .p2align 4,,10
 135         .p2align 3
 136 .L31:
 137         call    __malloc_fork_unlock_parent
 138         call    __GI__IO_list_unlock
 139         movl    %ebp, %esi
 140         movl    $2, %edi
 141         call    __run_fork_handlers
 142         jmp     .L33
 143         .p2align 4,,10
 144         .p2align 3
 145 .L29:
 146         movq    232+__libc_pthread_functions(%rip), %rax
 147 #APP
 148 # 108 "../sysdeps/nptl/fork.c" 1
 149         ror $2*8+1, %rax
 150 xor %fs:48, %rax
 151 # 0 "" 2
 152 #NO_APP
 153         call    *%rax
 154         jmp     .L6
 155         .p2align 4,,10
 156         .p2align 3
 157 .L32:
 158         call    __GI__IO_list_resetlock
 159         movq    %rsp, %rdi
 160         call    __nss_database_fork_subprocess
 161         jmp     .L7
 162         .size   __libc_fork, .-__libc_fork
 163         .weak   fork
 164         .set    fork,__libc_fork
 165         .weak   __GI___fork
 166         .hidden __GI___fork
 167         .set    __GI___fork,__libc_fork
 168         .globl  __fork
 169         .set    __fork,__GI___fork
 170         .hidden __nss_database_fork_subprocess
 171         .hidden __libc_pthread_functions
 172         .hidden __malloc_fork_unlock_parent
 173         .hidden __malloc_fork_unlock_child
 174         .hidden __malloc_fork_lock_parent
 175         .hidden __nss_database_fork_prepare_parent
 176         .hidden __libc_pthread_functions_init
 177         .hidden __fork_generation_pointer
 178         .hidden __run_fork_handlers