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arm.u's questions

Martin Hope
arm.u
Asked: 2024-07-26 07:41:50 +0800 CST
  • 5

A arquitetura da minha máquina é x86_64 e compilei o assembly arm64 (daqui ) em um executável. No entanto, o binário ainda pode ser executado na minha máquina... como?

Aqui estão as saídas para os seguintes comandos:

$ uname -r 
6.2.12-100.fc36.x86_64

$ file hello
hello: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, stripped

$ ./hello
Hello, ARM64

$ qemu-aarch64-static hello
Hello, ARM64

$ qemu-x86_64-static hello
qemu-x86_64-static: hello: Invalid ELF image for this architecture

$ readelf -a hello 
ELF Header:
  Magic:   7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00 
  Class:                             ELF64
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            UNIX - System V
  ABI Version:                       0
  Type:                              EXEC (Executable file)
  Machine:                           AArch64
  Version:                           0x1
  Entry point address:               0x4000b0
  Start of program headers:          64 (bytes into file)
  Start of section headers:          264 (bytes into file)
  Flags:                             0x0
  Size of this header:               64 (bytes)
  Size of program headers:           56 (bytes)
  Number of program headers:         2
  Size of section headers:           64 (bytes)
  Number of section headers:         4
  Section header string table index: 3

Section Headers:
  [Nr] Name              Type             Address           Offset
       Size              EntSize          Flags  Link  Info  Align
  [ 0]                   NULL             0000000000000000  00000000
       0000000000000000  0000000000000000           0     0     0
  [ 1] .text             PROGBITS         00000000004000b0  000000b0
       0000000000000030  0000000000000000  AX       0     0     8
  [ 2] .data             PROGBITS         00000000004100e0  000000e0
       000000000000000d  0000000000000000  WA       0     0     1
  [ 3] .shstrtab         STRTAB           0000000000000000  000000ed
       0000000000000017  0000000000000000           0     0     1
Key to Flags:
  W (write), A (alloc), X (execute), M (merge), S (strings), I (info),
  L (link order), O (extra OS processing required), G (group), T (TLS),
  C (compressed), x (unknown), o (OS specific), E (exclude),
  D (mbind), p (processor specific)

There are no section groups in this file.

Program Headers:
  Type           Offset             VirtAddr           PhysAddr
                 FileSiz            MemSiz              Flags  Align
  LOAD           0x0000000000000000 0x0000000000400000 0x0000000000400000
                 0x00000000000000e0 0x00000000000000e0  R E    0x10000
  LOAD           0x00000000000000e0 0x00000000004100e0 0x00000000004100e0
                 0x000000000000000d 0x000000000000000d  RW     0x10000

 Section to Segment mapping:
  Segment Sections...
   00     .text 
   01     .data 

There is no dynamic section in this file.

There are no relocations in this file.

The decoding of unwind sections for machine type AArch64 is not currently supported.

No version information found in this file.
linux