io/ttyname.s

   1         .text
   2 #APP
   3         .section __libc_freeres_ptrs, "aw", %nobits
   4         .previous
   5         .section __libc_freeres_ptrs, "aw", %nobits
   6         .previous
   7         .section        .rodata.str1.1,"aMS",@progbits,1
   8 .LC0:
   9         .string "stdin"
  10 .LC1:
  11         .string "stdout"
  12 .LC2:
  13         .string "stderr"
  14 #NO_APP
  15         .section        .text.compat,"ax",@progbits
  16         .p2align 4,,15
  17         .type   getttyname, @function
  18 getttyname:
  19         pushq   %r15
  20         pushq   %r14
  21         pushq   %r13
  22         pushq   %r12
  23         movq    %rcx, %r13
  24         pushq   %rbp
  25         pushq   %rbx
  26         movq    %rdi, %rbx
  27         movq    %rsi, %rbp
  28         subq    $200, %rsp
  29         movq    %rdi, 16(%rsp)
  30         movl    %edx, 36(%rsp)
  31         call    strlen
  32         movq    %rbx, %rdi
  33         movq    %rax, 24(%rsp)
  34         leaq    1(%rax), %r15
  35         call    __opendir
  36         testq   %rax, %rax
  37         je      .L23
  38         cmpq    %r15, namelen.8898(%rip)
  39         movq    %rax, %rbx
  40         ja      .L24
  41 .L4:
  42         leaq    48(%rsp), %rax
  43         leaq    .LC0(%rip), %r12
  44         movq    %rax, 8(%rsp)
  45         .p2align 4,,10
  46         .p2align 3
  47 .L5:
  48         movq    %rbx, %rdi
  49         call    __readdir64
  50         testq   %rax, %rax
  51         je      .L25
  52         movq    8(%rbp), %rdx
  53         cmpq    %rdx, (%rax)
  54         je      .L6
  55         movl    0(%r13), %edx
  56         testl   %edx, %edx
  57         je      .L5
  58 .L6:
  59         leaq    19(%rax), %r14
  60         movl    $6, %ecx
  61         movq    %r12, %rdi
  62         movq    %r14, %rsi
  63         repz cmpsb
  64         je      .L5
  65         leaq    .LC1(%rip), %rdi
  66         movl    $7, %ecx
  67         movq    %r14, %rsi
  68         repz cmpsb
  69         je      .L5
  70         leaq    .LC2(%rip), %rdi
  71         movl    $7, %ecx
  72         movq    %r14, %rsi
  73         repz cmpsb
  74         je      .L5
  75         movzwl  16(%rax), %ecx
  76         movq    getttyname_name(%rip), %r8
  77         addq    %rax, %rcx
  78         subq    %r14, %rcx
  79         leaq    (%r15,%rcx), %rax
  80         cmpq    namelen.8898(%rip), %rax
  81         movq    %rax, (%rsp)
  82         jbe     .L8
  83         movq    %r8, %rdi
  84         movq    %rcx, 40(%rsp)
  85         call    free@PLT
  86         movq    (%rsp), %rax
  87         leaq    (%rax,%rax), %rdi
  88         movq    %rdi, namelen.8898(%rip)
  89         call    malloc@PLT
  90         testq   %rax, %rax
  91         movq    %rax, getttyname_name(%rip)
  92         movq    40(%rsp), %rcx
  93         je      .L26
  94         movq    24(%rsp), %rdx
  95         movq    16(%rsp), %rsi
  96         movq    %rax, %rdi
  97         movq    %rcx, 40(%rsp)
  98         movq    %rax, (%rsp)
  99         call    __mempcpy@PLT
 100         movq    40(%rsp), %rcx
 101         movq    (%rsp), %r8
 102         movb    $47, (%rax)
 103 .L8:
 104         leaq    (%r8,%r15), %rdi
 105         movq    %rcx, %rdx
 106         movq    %r14, %rsi
 107         movq    %r8, (%rsp)
 108         call    memcpy@PLT
 109         movq    (%rsp), %r8
 110         movq    8(%rsp), %rsi
 111         movq    %r8, %rdi
 112         call    __stat64
 113         testl   %eax, %eax
 114         jne     .L5
 115         movq    8(%rbp), %rax
 116         cmpq    %rax, 56(%rsp)
 117         jne     .L5
 118         movq    0(%rbp), %rax
 119         cmpq    %rax, 48(%rsp)
 120         jne     .L5
 121         movl    72(%rsp), %eax
 122         andl    $61440, %eax
 123         cmpl    $8192, %eax
 124         jne     .L5
 125         movq    40(%rbp), %rax
 126         cmpq    %rax, 88(%rsp)
 127         jne     .L5
 128         movq    %rbx, %rdi
 129         call    __closedir
 130         movq    __libc_errno@gottpoff(%rip), %rax
 131         movl    36(%rsp), %ebx
 132         movq    getttyname_name(%rip), %r14
 133         movl    %ebx, %fs:(%rax)
 134         jmp     .L1
 135         .p2align 4,,10
 136         .p2align 3
 137 .L25:
 138         movq    %rbx, %rdi
 139         xorl    %r14d, %r14d
 140         call    __closedir
 141         movq    __libc_errno@gottpoff(%rip), %rax
 142         movl    36(%rsp), %ebx
 143         movl    %ebx, %fs:(%rax)
 144 .L1:
 145         addq    $200, %rsp
 146         movq    %r14, %rax
 147         popq    %rbx
 148         popq    %rbp
 149         popq    %r12
 150         popq    %r13
 151         popq    %r14
 152         popq    %r15
 153         ret
 154         .p2align 4,,10
 155         .p2align 3
 156 .L24:
 157         movq    24(%rsp), %rdx
 158         movq    16(%rsp), %rsi
 159         movq    getttyname_name(%rip), %rdi
 160         call    __mempcpy@PLT
 161         movb    $47, (%rax)
 162         jmp     .L4
 163 .L23:
 164         movl    $-1, 0(%r13)
 165         xorl    %r14d, %r14d
 166         jmp     .L1
 167 .L26:
 168         movl    $-1, 0(%r13)
 169         movq    %rbx, %rdi
 170         movq    %rax, %r14
 171         call    __closedir
 172         jmp     .L1
 173         .size   getttyname, .-getttyname
 174         .section        .rodata.str1.1
 175 .LC3:
 176         .string "(unreachable)"
 177 .LC4:
 178         .string "/dev/pts"
 179 .LC5:
 180         .string "/dev"
 181         .text
 182         .p2align 4,,15
 183         .globl  ttyname
 184         .type   ttyname, @function
 185 ttyname:
 186         pushq   %r14
 187         pushq   %r13
 188         pushq   %r12
 189         pushq   %rbp
 190         pushq   %rbx
 191         movl    %edi, %ebx
 192         subq    $400, %rsp
 193         movq    __libc_errno@gottpoff(%rip), %rbp
 194         leaq    48(%rsp), %rsi
 195         movl    $0, 12(%rsp)
 196         movl    %fs:0(%rbp), %r14d
 197         call    __tcgetattr
 198         testl   %eax, %eax
 199         js      .L56
 200         leaq    112(%rsp), %r13
 201         movl    %ebx, %edi
 202         movq    %r13, %rsi
 203         call    __fstat64
 204         testl   %eax, %eax
 205         js      .L56
 206         leaq    16(%rsp), %r12
 207         movabsq $7310238724270485551, %rax
 208         xorl    %ecx, %ecx
 209         movq    %rax, 16(%rsp)
 210         movl    $10, %edx
 211         movl    $12132, %eax
 212         leaq    14(%r12), %rsi
 213         movslq  %ebx, %rdi
 214         movl    $1714382444, 24(%rsp)
 215         movw    %ax, 28(%rsp)
 216         movb    $0, 30(%rsp)
 217         call    _fitoa_word
 218         movq    buflen.8911(%rip), %rdx
 219         movb    $0, (%rax)
 220         testq   %rdx, %rdx
 221         je      .L57
 222         movq    ttyname_buf(%rip), %rax
 223 .L32:
 224         movq    %rax, %rsi
 225         movq    %r12, %rdi
 226         call    __readlink
 227         cmpq    $-1, %rax
 228         je      .L48
 229         cmpq    buflen.8911(%rip), %rax
 230         movq    %rax, %rbx
 231         jnb     .L56
 232         cmpq    $13, %rax
 233         movq    ttyname_buf(%rip), %rcx
 234         jbe     .L34
 235         movabsq $7521962890978293032, %rax
 236         cmpq    %rax, (%rcx)
 237         je      .L58
 238 .L34:
 239         movb    $0, (%rcx,%rbx)
 240         cmpb    $47, (%rcx)
 241         leaq    256(%rsp), %rbx
 242         je      .L37
 243 .L38:
 244         movl    $1, %r12d
 245 .L33:
 246         leaq    .LC4(%rip), %rdi
 247         movq    %rbx, %rsi
 248         call    __stat64
 249         testl   %eax, %eax
 250         jne     .L40
 251         movl    280(%rsp), %eax
 252         andl    $61440, %eax
 253         cmpl    $16384, %eax
 254         je      .L59
 255 .L40:
 256         cmpl    $-1, 12(%rsp)
 257         movl    %r14d, %fs:0(%rbp)
 258         je      .L45
 259         leaq    12(%rsp), %rbx
 260 .L44:
 261         leaq    .LC5(%rip), %rdi
 262         movq    %rbx, %rcx
 263         movl    %r14d, %edx
 264         movq    %r13, %rsi
 265         call    getttyname
 266         testq   %rax, %rax
 267         jne     .L27
 268         cmpl    $-1, 12(%rsp)
 269         je      .L45
 270         leaq    .LC5(%rip), %rdi
 271         movl    %r14d, %edx
 272         movq    %rbx, %rcx
 273         movq    %r13, %rsi
 274         movl    $1, 12(%rsp)
 275         call    getttyname
 276         testq   %rax, %rax
 277         sete    %dl
 278         jmp     .L46
 279         .p2align 4,,10
 280         .p2align 3
 281 .L59:
 282         leaq    12(%rsp), %rbx
 283         leaq    .LC4(%rip), %rdi
 284         movl    %r14d, %edx
 285         movq    %r13, %rsi
 286         movq    %rbx, %rcx
 287         call    getttyname
 288         testq   %rax, %rax
 289         jne     .L27
 290         cmpl    $-1, 12(%rsp)
 291         jne     .L44
 292         .p2align 4,,10
 293         .p2align 3
 294 .L45:
 295         movl    $1, %edx
 296         xorl    %eax, %eax
 297 .L46:
 298         testl   %r12d, %r12d
 299         je      .L27
 300         testb   %dl, %dl
 301         je      .L27
 302         movq    152(%rsp), %rax
 303         movq    %rax, %rdx
 304         shrq    $32, %rax
 305         shrq    $8, %rdx
 306         andl    $-4096, %eax
 307         andl    $4095, %edx
 308         orl     %edx, %eax
 309         subl    $136, %eax
 310         cmpl    $7, %eax
 311         ja      .L56
 312         movl    $19, %fs:0(%rbp)
 313         .p2align 4,,10
 314         .p2align 3
 315 .L56:
 316         xorl    %eax, %eax
 317 .L27:
 318         addq    $400, %rsp
 319         popq    %rbx
 320         popq    %rbp
 321         popq    %r12
 322         popq    %r13
 323         popq    %r14
 324         ret
 325         .p2align 4,,10
 326         .p2align 3
 327 .L57:
 328         movl    $4096, %edi
 329         movq    $4095, buflen.8911(%rip)
 330         call    malloc@PLT
 331         testq   %rax, %rax
 332         movq    %rax, ttyname_buf(%rip)
 333         movl    $4095, %edx
 334         jne     .L32
 335         movq    $0, buflen.8911(%rip)
 336         jmp     .L27
 337         .p2align 4,,10
 338         .p2align 3
 339 .L37:
 340         movq    %rbx, %rsi
 341         movq    %rcx, %rdi
 342         call    __stat64
 343         testl   %eax, %eax
 344         jne     .L38
 345         movq    264(%rsp), %rax
 346         cmpq    %rax, 120(%rsp)
 347         jne     .L38
 348         movq    112(%rsp), %rax
 349         cmpq    %rax, 256(%rsp)
 350         jne     .L38
 351         movl    280(%rsp), %eax
 352         andl    $61440, %eax
 353         cmpl    $8192, %eax
 354         jne     .L38
 355         movq    152(%rsp), %rax
 356         cmpq    %rax, 296(%rsp)
 357         jne     .L38
 358         movq    ttyname_buf(%rip), %rax
 359         jmp     .L27
 360         .p2align 4,,10
 361         .p2align 3
 362 .L58:
 363         cmpl    $1701601889, 8(%rcx)
 364         jne     .L34
 365         cmpb    $41, 12(%rcx)
 366         jne     .L34
 367         leaq    13(%rcx), %rsi
 368         subq    $13, %rbx
 369         movq    %rcx, %rdi
 370         movq    %rbx, %rdx
 371         call    memmove
 372         movq    %rax, %rcx
 373         jmp     .L34
 374         .p2align 4,,10
 375         .p2align 3
 376 .L48:
 377         xorl    %r12d, %r12d
 378         leaq    256(%rsp), %rbx
 379         jmp     .L33
 380         .size   ttyname, .-ttyname
 381         .local  namelen.8898
 382         .comm   namelen.8898,8,8
 383         .local  buflen.8911
 384         .comm   buflen.8911,8,8
 385         .section        __libc_freeres_ptrs
 386         #,"aw",@progbits
 387         .align 8
 388         .type   ttyname_buf, @object
 389         .size   ttyname_buf, 8
 390 ttyname_buf:
 391         .zero   8
 392         .align 8
 393         .type   getttyname_name, @object
 394         .size   getttyname_name, 8
 395 getttyname_name:
 396         .zero   8
 397         .hidden memmove
 398         .hidden __readlink
 399         .hidden _fitoa_word
 400         .hidden __fstat64
 401         .hidden __tcgetattr
 402         .hidden __closedir
 403         .hidden __stat64
 404         .hidden __readdir64
 405         .hidden __opendir
 406         .hidden strlen