debug/backtrace.s

   1         .text
   2         .p2align 4,,15
   3         .type   backtrace_helper, @function
   4 backtrace_helper:
   5 .LFB49:
   6         pushq   %rbp
   7         movq    %rsp, %rbp
   8         pushq   %r12
   9         pushq   %rbx
  10         movl    16(%rsi), %edx
  11         movq    %rsi, %rbx
  12         cmpl    $-1, %edx
  13         jne     .L11
  14         addl    $1, %edx
  15         cmpl    20(%rbx), %edx
  16         movl    %edx, 16(%rbx)
  17         je      .L5
  18 .L13:
  19         popq    %rbx
  20         xorl    %eax, %eax
  21         popq    %r12
  22         popq    %rbp
  23         ret
  24         .p2align 4,,10
  25         .p2align 3
  26 .L11:
  27         movq    %rdi, %r12
  28         call    _Unwind_GetIP@PLT
  29         movslq  16(%rbx), %rcx
  30         movq    (%rbx), %rdx
  31         movq    %r12, %rdi
  32         movq    %rax, (%rdx,%rcx,8)
  33         call    _Unwind_GetCFA@PLT
  34         movl    16(%rbx), %edx
  35         testl   %edx, %edx
  36         jle     .L3
  37         movq    (%rbx), %rcx
  38         movslq  %edx, %rsi
  39         movq    (%rcx,%rsi,8), %rdi
  40         cmpq    %rdi, -8(%rcx,%rsi,8)
  41         je      .L12
  42 .L3:
  43         addl    $1, %edx
  44         cmpl    20(%rbx), %edx
  45         movq    %rax, 8(%rbx)
  46         movl    %edx, 16(%rbx)
  47         jne     .L13
  48 .L5:
  49         popq    %rbx
  50         movl    $5, %eax
  51         popq    %r12
  52         popq    %rbp
  53         ret
  54         .p2align 4,,10
  55         .p2align 3
  56 .L12:
  57         cmpq    %rax, 8(%rbx)
  58         jne     .L3
  59         jmp     .L5
  60 .LFE49:
  61         .size   backtrace_helper, .-backtrace_helper
  62         .p2align 4,,15
  63         .globl  __backtrace
  64         .hidden __backtrace
  65         .type   __backtrace, @function
  66 __backtrace:
  67 .LFB50:
  68         pushq   %rbp
  69         movq    %rsp, %rbp
  70         subq    $32, %rsp
  71         testl   %esi, %esi
  72         movq    %rdi, -32(%rbp)
  73         movq    $0, -24(%rbp)
  74         movl    $-1, -16(%rbp)
  75         movl    %esi, -12(%rbp)
  76         jle     .L15
  77         leaq    -32(%rbp), %rsi
  78         leaq    backtrace_helper(%rip), %rdi
  79         call    _Unwind_Backtrace@PLT
  80         movl    -16(%rbp), %eax
  81         cmpl    $1, %eax
  82         jle     .L16
  83         movq    -32(%rbp), %rcx
  84         movslq  %eax, %rdx
  85         cmpq    $0, -8(%rcx,%rdx,8)
  86         je      .L20
  87 .L14:
  88         leave
  89         ret
  90         .p2align 4,,10
  91         .p2align 3
  92 .L16:
  93         cmpl    $-1, %eax
  94         jne     .L14
  95 .L15:
  96         xorl    %eax, %eax
  97         leave
  98         ret
  99         .p2align 4,,10
 100         .p2align 3
 101 .L20:
 102         subl    $1, %eax
 103         leave
 104         ret
 105 .LFE50:
 106         .size   __backtrace, .-__backtrace
 107         .weak   backtrace
 108         .set    backtrace,__backtrace