debug/fgets_chk.s

   1         .text
   2         .p2align 4,,15
   3         .globl  __fgets_chk
   4         .type   __fgets_chk, @function
   5 __fgets_chk:
   6 .LFB68:
   7         testl   %edx, %edx
   8         jle     .L16
   9         pushq   %r14
  10         pushq   %r13
  11         movq    %rdi, %r14
  12         pushq   %r12
  13         pushq   %rbp
  14         movq    %rcx, %rbp
  15         pushq   %rbx
  16         movl    %edx, %ebx
  17         movl    (%rcx), %edx
  18         movq    %rsi, %r12
  19         movl    %edx, %ecx
  20         andl    $32768, %ecx
  21         jne     .L3
  22         movq    136(%rbp), %rdi
  23         movq    %fs:16, %r13
  24         cmpq    %r13, 8(%rdi)
  25         je      .L4
  26 #APP
  27 # 39 "fgets_chk.c" 1
  28         movl %fs:24,%eax
  29 # 0 "" 2
  30 #NO_APP
  31         testl   %eax, %eax
  32         movl    $1, %edx
  33         jne     .L5
  34 #APP
  35 # 47 "../sysdeps/unix/sysv/linux/x86/lowlevellock.h" 1
  36         cmpxchgl %edx, (%rdi)
  37 # 0 "" 2
  38 #NO_APP
  39 .L6:
  40         movq    136(%rbp), %rdi
  41         movl    0(%rbp), %edx
  42         movq    %r13, 8(%rdi)
  43 .L4:
  44         addl    $1, 4(%rdi)
  45 .L3:
  46         movl    %edx, %r13d
  47         andl    $-33, %edx
  48         movl    $1, %r8d
  49         movl    %edx, 0(%rbp)
  50         movslq  %ebx, %rdx
  51         andl    $32, %r13d
  52         subq    $1, %rdx
  53         movl    $10, %ecx
  54         movq    %r14, %rsi
  55         cmpq    %r12, %rdx
  56         movq    %rbp, %rdi
  57         cmova   %r12, %rdx
  58 .LEHB0:
  59         call    _IO_getline
  60         testq   %rax, %rax
  61         movl    0(%rbp), %edx
  62         jne     .L28
  63         xorl    %r8d, %r8d
  64 .L9:
  65         orl     %edx, %r13d
  66         movl    %r13d, 0(%rbp)
  67         andl    $32768, %r13d
  68         jne     .L1
  69         movq    136(%rbp), %rdi
  70         movl    4(%rdi), %eax
  71         subl    $1, %eax
  72         testl   %eax, %eax
  73         movl    %eax, 4(%rdi)
  74         jne     .L1
  75         movq    $0, 8(%rdi)
  76 #APP
  77 # 885 "../libio/libioP.h" 1
  78         movl %fs:24,%edx
  79 # 0 "" 2
  80 #NO_APP
  81         testl   %edx, %edx
  82         jne     .L12
  83         subl    $1, (%rdi)
  84 .L1:
  85         popq    %rbx
  86         movq    %r8, %rax
  87         popq    %rbp
  88         popq    %r12
  89         popq    %r13
  90         popq    %r14
  91         ret
  92         .p2align 4,,10
  93         .p2align 3
  94 .L28:
  95         testb   $32, %dl
  96         je      .L10
  97         movq    __libc_errno@gottpoff(%rip), %rcx
  98         xorl    %r8d, %r8d
  99         cmpl    $11, %fs:(%rcx)
 100         jne     .L9
 101 .L10:
 102         cmpq    %rax, %r12
 103         jbe     .L29
 104         movb    $0, (%r14,%rax)
 105         movq    %r14, %r8
 106         movl    0(%rbp), %edx
 107         jmp     .L9
 108         .p2align 4,,10
 109         .p2align 3
 110 .L16:
 111         xorl    %r8d, %r8d
 112         movq    %r8, %rax
 113         ret
 114         .p2align 4,,10
 115         .p2align 3
 116 .L5:
 117         movl    %ecx, %eax
 118         lock cmpxchgl   %edx, (%rdi)
 119         je      .L6
 120         call    __lll_lock_wait_private
 121         jmp     .L6
 122         .p2align 4,,10
 123         .p2align 3
 124 .L12:
 125 #APP
 126 # 885 "../libio/libioP.h" 1
 127         xchgl %eax, (%rdi)
 128 # 0 "" 2
 129 #NO_APP
 130         cmpl    $1, %eax
 131         jle     .L1
 132         xorl    %r10d, %r10d
 133         movl    $1, %edx
 134         movl    $129, %esi
 135         movl    $202, %eax
 136 #APP
 137 # 885 "../libio/libioP.h" 1
 138         syscall
 139
 140 # 0 "" 2
 141 #NO_APP
 142         jmp     .L1
 143 .L29:
 144         call    __chk_fail
 145 .LEHE0:
 146 .L19:
 147         testl   $32768, 0(%rbp)
 148         movq    %rax, %r8
 149         jne     .L14
 150         movq    136(%rbp), %rdi
 151         movl    4(%rdi), %eax
 152         subl    $1, %eax
 153         testl   %eax, %eax
 154         movl    %eax, 4(%rdi)
 155         jne     .L14
 156         movq    $0, 8(%rdi)
 157 #APP
 158 # 885 "../libio/libioP.h" 1
 159         movl %fs:24,%edx
 160 # 0 "" 2
 161 #NO_APP
 162         testl   %edx, %edx
 163         jne     .L15
 164         subl    $1, (%rdi)
 165 .L14:
 166         movq    %r8, %rdi
 167 .LEHB1:
 168         call    _Unwind_Resume@PLT
 169 .LEHE1:
 170 .L15:
 171 #APP
 172 # 885 "../libio/libioP.h" 1
 173         xchgl %eax, (%rdi)
 174 # 0 "" 2
 175 #NO_APP
 176         subl    $1, %eax
 177         jle     .L14
 178         xorl    %r10d, %r10d
 179         movl    $1, %edx
 180         movl    $129, %esi
 181         movl    $202, %eax
 182 #APP
 183 # 885 "../libio/libioP.h" 1
 184         syscall
 185
 186 # 0 "" 2
 187 #NO_APP
 188         jmp     .L14
 189 .LFE68:
 190         .globl  __gcc_personality_v0
 191         .section        .gcc_except_table,"a",@progbits
 192 .LLSDA68:
 193         .byte   0xff
 194         .byte   0xff
 195         .byte   0x1
 196         .uleb128 .LLSDACSE68-.LLSDACSB68
 197 .LLSDACSB68:
 198         .uleb128 .LEHB0-.LFB68
 199         .uleb128 .LEHE0-.LEHB0
 200         .uleb128 .L19-.LFB68
 201         .uleb128 0
 202         .uleb128 .LEHB1-.LFB68
 203         .uleb128 .LEHE1-.LEHB1
 204         .uleb128 0
 205         .uleb128 0
 206 .LLSDACSE68:
 207         .text
 208         .size   __fgets_chk, .-__fgets_chk
 209         .hidden DW.ref.__gcc_personality_v0
 210         .weak   DW.ref.__gcc_personality_v0
 211         .section        .data.DW.ref.__gcc_personality_v0,"awG",@progbits,DW.ref.__gcc_personality_v0,comdat
 212         .align 8
 213         .type   DW.ref.__gcc_personality_v0, @object
 214         .size   DW.ref.__gcc_personality_v0, 8
 215 DW.ref.__gcc_personality_v0:
 216         .quad   __gcc_personality_v0
 217         .hidden __chk_fail
 218         .hidden __lll_lock_wait_private
 219         .hidden _IO_getline