csu/libc-tls.s

   1         .text
   2         .section        .rodata.str1.8,"aMS",@progbits,1
   3         .align 8
   4 .LC0:
   5         .string "cannot set %fs base address for thread-local storage"
   6         .text
   7         .p2align 4,,15
   8         .globl  __libc_setup_tls
   9         .type   __libc_setup_tls, @function
  10 __libc_setup_tls:
  11         pushq   %r15
  12         pushq   %r14
  13         pushq   %r13
  14         pushq   %r12
  15         pushq   %rbp
  16         pushq   %rbx
  17         subq    $40, %rsp
  18         movq    _dl_phdr(%rip), %rax
  19         movq    _dl_ns(%rip), %r13
  20         testq   %rax, %rax
  21         je      .L11
  22         movq    _dl_phnum(%rip), %rcx
  23         leaq    0(,%rcx,8), %rdx
  24         subq    %rcx, %rdx
  25         leaq    (%rax,%rdx,8), %rdx
  26         cmpq    %rdx, %rax
  27         jb      .L6
  28         jmp     .L11
  29         .p2align 4,,10
  30         .p2align 3
  31 .L4:
  32         addq    $56, %rax
  33         cmpq    %rax, %rdx
  34         jbe     .L11
  35 .L6:
  36         cmpl    $7, (%rax)
  37         jne     .L4
  38         movq    16(%rax), %r12
  39         addq    0(%r13), %r12
  40         movq    32(%rax), %rbx
  41         movq    40(%rax), %rbp
  42         movq    %r12, 16(%rsp)
  43         movq    48(%rax), %r12
  44         movq    %rbx, 8(%rsp)
  45         cmpq    $64, %r12
  46         jbe     .L2
  47         xorl    %edi, %edi
  48         movq    %r12, %r15
  49         movq    %r12, %r14
  50         call    _dl_tls_static_surplus_init
  51         movq    _dl_tls_static_surplus(%rip), %rax
  52         xorl    %edx, %edx
  53         negq    %r15
  54         leaq    -1(%r12), %rsi
  55         leaq    -1(%rbp,%rax), %rax
  56         addq    %r12, %rax
  57         divq    %r12
  58         imulq   %r12, %rax
  59         movq    %rax, %rbx
  60         jmp     .L9
  61         .p2align 4,,10
  62         .p2align 3
  63 .L11:
  64         xorl    %r12d, %r12d
  65         movq    $0, 16(%rsp)
  66         movq    $0, 8(%rsp)
  67         xorl    %ebp, %ebp
  68 .L2:
  69         xorl    %edi, %edi
  70         movq    $-64, %r15
  71         movl    $64, %r14d
  72         call    _dl_tls_static_surplus_init
  73         movq    _dl_tls_static_surplus(%rip), %rax
  74         leaq    63(%rbp,%rax), %rsi
  75         movq    %rsi, %rbx
  76         movl    $63, %esi
  77         andq    $-64, %rbx
  78 .L9:
  79         leaq    2496(%rbx,%r14), %rdi
  80         movq    %rsi, 24(%rsp)
  81         call    __sbrk
  82         movq    24(%rsp), %rsi
  83         movq    $62, _dl_static_dtv(%rip)
  84         addq    %rax, %rsi
  85         movq    %rsi, %rcx
  86         andq    %r15, %rcx
  87         testq   %r12, %r12
  88         je      .L12
  89         leaq    -1(%rbp,%r12), %rax
  90         movq    %r12, %r15
  91 .L7:
  92         xorl    %edx, %edx
  93         movq    16(%rsp), %rsi
  94         movq    %rbx, %rdi
  95         divq    %r15
  96         movq    8(%rsp), %rdx
  97         movq    %rcx, 24(%rsp)
  98         movq    $0, 40+_dl_static_dtv(%rip)
  99         imulq   %rax, %r15
 100         subq    %r15, %rdi
 101         movq    %r15, 1112(%r13)
 102         addq    %rcx, %rdi
 103         movq    %rdi, 32+_dl_static_dtv(%rip)
 104         call    memcpy@PLT
 105         movq    24(%rsp), %rcx
 106         leaq    16+_dl_static_dtv(%rip), %rax
 107         movl    $4098, %edi
 108         leaq    (%rcx,%rbx), %rsi
 109         movq    %rax, 8(%rsi)
 110         movq    %rsi, (%rsi)
 111         movl    $158, %eax
 112         movq    %rsi, 16(%rsi)
 113 #APP
 114 # 187 "libc-tls.c" 1
 115         syscall
 116 # 0 "" 2
 117 #NO_APP
 118         testl   %eax, %eax
 119         je      .L8
 120         leaq    .LC0(%rip), %rdi
 121         call    __libc_fatal
 122         .p2align 4,,10
 123         .p2align 3
 124 .L8:
 125         leaq    _dl_stack_user(%rip), %rdx
 126         leaq    _dl_stack_used(%rip), %rax
 127         movq    %rdx, _dl_stack_user(%rip)
 128         movq    %rax, 8+_dl_stack_used(%rip)
 129         movq    %rax, _dl_stack_used(%rip)
 130         movq    %fs:16, %rax
 131         leaq    704(%rax), %rcx
 132         movq    %rdx, 704(%rax)
 133         movq    %rdx, 712(%rax)
 134         movq    %rcx, 8+_dl_stack_user(%rip)
 135         movq    16(%rsp), %rax
 136         movq    %r12, 1096(%r13)
 137         movq    %rbp, 1088(%r13)
 138         movq    $1, 1120(%r13)
 139         movq    %r13, 40+static_slotinfo(%rip)
 140         movq    %r15, _dl_tls_static_used(%rip)
 141         movq    %rax, 1072(%r13)
 142         movq    8(%rsp), %rax
 143         movq    %r14, _dl_tls_static_align(%rip)
 144         movq    %rcx, _dl_stack_user(%rip)
 145         movq    $64, static_slotinfo(%rip)
 146         movq    $1, _dl_tls_max_dtv_idx(%rip)
 147         movq    %rax, 1080(%r13)
 148         leaq    static_slotinfo(%rip), %rax
 149         movq    $1, _dl_tls_static_nelem(%rip)
 150         movq    %rax, _dl_tls_dtv_slotinfo_list(%rip)
 151         movq    _dl_tls_static_surplus(%rip), %rax
 152         leaq    63(%r15,%rax), %rax
 153         andq    $-64, %rax
 154         addq    $2496, %rax
 155         movq    %rax, _dl_tls_static_size(%rip)
 156         addq    $40, %rsp
 157         popq    %rbx
 158         popq    %rbp
 159         popq    %r12
 160         popq    %r13
 161         popq    %r14
 162         popq    %r15
 163         ret
 164         .p2align 4,,10
 165         .p2align 3
 166 .L12:
 167         movq    %rbp, %rax
 168         movl    $1, %r15d
 169         jmp     .L7
 170         .size   __libc_setup_tls, .-__libc_setup_tls
 171         .comm   _dl_tls_generation,8,8
 172         .comm   _dl_tls_static_optional,8,8
 173         .comm   _dl_tls_static_surplus,8,8
 174         .comm   _dl_tls_static_align,8,8
 175         .comm   _dl_tls_static_used,8,8
 176         .comm   _dl_tls_static_size,8,8
 177         .comm   _dl_tls_static_nelem,8,8
 178         .comm   _dl_tls_dtv_slotinfo_list,8,8
 179         .comm   _dl_tls_dtv_gaps,1,1
 180         .comm   _dl_tls_max_dtv_idx,8,8
 181         .local  static_slotinfo
 182         .comm   static_slotinfo,1040,16
 183         .comm   _dl_static_dtv,1024,32
 184         .hidden __libc_fatal
 185         .hidden __sbrk
 186         .hidden _dl_tls_static_surplus_init