user: 请从给定的汇编指令推导出C源代码：

```asm
<get_cpuname>:
  endbr64
  push   %r13
  xor    %eax,%eax
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  call   <have_cpuid@plt>
  mov    %eax,%r8d
  mov    $0xb,%eax
  test   %r8d,%r8d
  je     L287
  mov    $0x4,%edi
  call   <get_cputype@plt>
  mov    $0x1,%edi
  mov    %eax,%r13d
  call   <get_cputype@plt>
  mov    $0x5,%edi
  mov    %eax,%ebp
  call   <get_cputype@plt>
  mov    $0x2,%edi
  mov    %eax,%ebx
  call   <get_cputype@plt>
  mov    %eax,%r12d
  xor    %eax,%eax
  call   <get_vendor@plt>
  cmp    $0x1,%eax
  je     L649
  lea    -0x3(%rax),%edx
  cmp    $0x7,%edx
  ja     10c0 <get_cpuname.cold>
  lea    D12(%rip),%rcx
  movslq (%rcx,%rdx,4),%rdx
  add    %rcx,%rdx
  notrack jmp *%rdx
  nopl   (%rax)
L649:
  sub    $0x4,%r13d
  cmp    $0xb,%r13d
  jbe    L78
L287:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   (%rax)
L78:
  lea    D55(%rip),%rcx
  movslq (%rcx,%r13,4),%rdx
  add    %rcx,%rdx
  notrack jmp *%rdx
  nopl   0x0(%rax)
  cmp    $0x5,%r13d
  mov    $0x28,%edx
  cmove  %edx,%eax
  jmp    L287
  xchg   %ax,%ax
  cmp    $0x5,%r13d
  mov    $0x29,%edx
  cmove  %edx,%eax
  jmp    L287
  xchg   %ax,%ax
  cmp    $0x6,%r13d
  je     L713
  jg     L522
  cmp    $0x4,%r13d
  je     L51
  cmp    $0x5,%r13d
  mov    $0x1a,%edx
  cmove  %edx,%eax
  jmp    L287
  nopl   0x0(%rax,%rax,1)
  lea    -0x4(%r13),%edx
  add    $0x1d,%r13d
  cmp    $0x3,%edx
  cmovb  %r13d,%eax
  jmp    L287
  nopl   0x0(%rax)
  cmp    $0x5,%r13d
  mov    $0x24,%edx
  cmove  %edx,%eax
  jmp    L287
  nopl   0x0(%rax)
  mov    $0x25,%eax
  cmp    $0x5,%r13d
  je     L287
  xor    %eax,%eax
  cmp    $0x6,%r13d
  sete   %al
  add    $0x2a,%eax
  jmp    L287
  cmp    $0x5,%r13d
  mov    $0x26,%edx
  cmove  %edx,%eax
  jmp    L287
  nopl   0x0(%rax)
  cmp    $0x5,%r13d
  mov    $0x27,%edx
  cmove  %edx,%eax
  jmp    L287
  nopl   0x0(%rax)
  test   %ebp,%ebp
  je     L485
  cmp    $0x1,%ebp
  mov    $0x17,%edx
  cmove  %edx,%eax
  jmp    L287
  nopl   0x0(%rax,%rax,1)
  mov    $0x17,%eax
  jmp    L287
  nopw   0x0(%rax,%rax,1)
  cmp    $0x9,%r12d
  ja     L287
  lea    D15(%rip),%rcx
  mov    %r12d,%edx
  movslq (%rcx,%rdx,4),%rdx
  add    %rcx,%rdx
  notrack jmp *%rdx
  xchg   %ax,%ax
  mov    $0xc,%eax
  jmp    L287
  nopw   0x0(%rax,%rax,1)
  mov    $0xd,%eax
  jmp    L287
L278:
  cmp    $0xe,%ebx
  jne    L287
L30:
  xor    %eax,%eax
  call   <support_avx@plt>
  mov    %eax,%r8d
  mov    $0x30,%eax
  test   %r8d,%r8d
  jne    L287
L491:
  mov    $0x15,%eax
  jmp    L287
  cmp    $0xc,%ebx
  je     L491
  jg     L278
L404:
  sub    $0x5,%ebx
  cmp    $0x2,%ebx
  jbe    L30
  jmp    L287
  cmp    $0xd,%ebx
  jg     L666
  cmp    $0xb,%ebx
  jle    L404
  jmp    L491
  sub    $0x7,%ebx
  cmp    $0x8,%ebx
  ja     L287
  lea    D39(%rip),%rcx
  movslq (%rcx,%rbx,4),%rdx
  add    %rcx,%rdx
  notrack jmp *%rdx
  sub    $0x6,%ebx
  cmp    $0x9,%ebx
  ja     L520
  lea    D54(%rip),%rdx
  movslq (%rdx,%rbx,4),%rax
  add    %rdx,%rax
  notrack jmp *%rax
  cmp    $0x6,%ebx
  jle    L387
  sub    $0x7,%ebx
  cmp    $0x8,%ebx
  ja     L287
  lea    D72(%rip),%rcx
  movslq (%rcx,%rbx,4),%rdx
  add    %rcx,%rdx
  notrack jmp *%rdx
  cmp    $0xf,%ebx
  ja     L287
  mov    $0x1,%edx
  mov    %ebx,%ecx
  shl    %cl,%rdx
  test   $0xd020,%edx
  jne    L491
  and    $0x24,%dh
  je     L287
  xor    %eax,%eax
  call   <support_avx@plt>
  mov    %eax,%r8d
  mov    $0x2c,%eax
  test   %r8d,%r8d
  jne    L287
  jmp    L491
  mov    $0xf,%eax
  jmp    L287
  mov    $0x10,%eax
  jmp    L287
  mov    $0x12,%eax
  jmp    L287
  mov    $0x16,%eax
  jmp    L287
  mov    $0x14,%eax
  jmp    L287
  mov    $0x13,%eax
  jmp    L287
L520:
  mov    %r12d,%eax
  jmp    L287
  nopw   0x0(%rax,%rax,1)
L522:
  cmp    $0xf,%r13d
  jne    L287
  cmp    $0xa,%ebp
  ja     L287
  lea    D76(%rip),%rcx
  movslq (%rcx,%rbp,4),%rdx
  add    %rcx,%rdx
  notrack jmp *%rdx
  cmp    $0x1,%ebx
  jne    L287
  xor    %eax,%eax
  call   <support_avx@plt>
  mov    %eax,%r8d
  mov    $0x33,%eax
  test   %r8d,%r8d
  jne    L287
L342:
  mov    $0x1e,%eax
  jmp    L287
  mov    $0x1d,%eax
  jmp    L287
  cmp    $0x8,%ebx
  ja     L287
  lea    D38(%rip),%rcx
  movslq (%rcx,%rbx,4),%rdx
  add    %rcx,%rdx
  notrack jmp *%rdx
  mov    $0x2d,%eax
  jmp    L287
  cmp    $0x3,%r12d
  je     L715
  cmp    $0x6,%r12d
  je     L123
  sub    $0x1,%r12d
  jne    L287
  xor    %eax,%eax
  call   <support_avx@plt>
  mov    %eax,%r8d
  mov    $0x2f,%eax
  test   %r8d,%r8d
  jne    L287
  jmp    L342
L123:
  xor    %eax,%eax
  call   <support_avx@plt>
  mov    %eax,%r8d
  mov    $0x32,%eax
  test   %r8d,%r8d
  jne    L287
  jmp    L342
  xor    %eax,%eax
  call   <support_avx@plt>
  mov    %eax,%r8d
  mov    $0x2e,%eax
  test   %r8d,%r8d
  jne    L287
  jmp    L342
  nopl   0x0(%rax,%rax,1)
L51:
  mov    $0x19,%eax
  jmp    L287
  nopw   0x0(%rax,%rax,1)
L485:
  mov    $0x11,%eax
  jmp    L287
L713:
  mov    $0x1b,%eax
  jmp    L287
L387:
  test   %ebx,%ebx
  jle    L287
  mov    $0x6a,%edx
  mov    %ebx,%ecx
  shr    %cl,%rdx
  and    $0x1,%edx
  mov    $0xe,%edx
  cmovne %edx,%eax
  jmp    L287
L666:
  sub    $0xe,%ebx
  cmp    $0x1,%ebx
  jbe    L30
  jmp    L287
L715:
  xor    %eax,%eax
  call   <support_avx@plt>
  mov    %eax,%r8d
  mov    $0x31,%eax
  test   %r8d,%r8d
  jne    L287
  jmp    L342
```

assistant: ```c
int get_cpuname(void) {
  int family, exfamily, model, vendor, exmodel;
  if (!have_cpuid())
    return 11;
  family = get_cputype(4);
  exfamily = get_cputype(1);
  model = get_cputype(5);
  exmodel = get_cputype(2);
  vendor = get_vendor();
  if (vendor == 1) {
    switch (family) {
    case 0x4:
      return 12;
    case 0x5:
      return 13;
    case 0x6:
      switch (exmodel) {
      case 0:
        switch (model) {
        case 1:
        case 3:
        case 5:
        case 6:
          return 14;
        case 7:
        case 8:
        case 10:
        case 11:
          return 15;
        case 9:
        case 13:
        case 14:
          return 16;
        case 15:
          return 18;
        }
        break;
      case 1:
        switch (model) {
        case 6:
          return 18;
        case 7:
          return 19;
        case 10:
        case 11:
        case 14:
        case 15:
          return 21;
        case 12:
          return 22;
        case 13:
          return 20;
        }
        break;
      case 2:
        switch (model) {
        case 5:
          return 21;
        case 10:
          if (support_avx())
            return 44;
          else
            return 21;
        case 12:
          return 21;
        case 13:
          if (support_avx())
            return 44;
          else
            return 21;
        case 14:
        case 15:
          return 21;
        }
        break;
      case 3:
        switch (model) {
        case 7:
          return 22;
        case 10:
        case 14:
          if (support_avx())
            return 44;
          else
            return 21;
        case 12:
        case 15:
          if (support_avx())
            return 48;
          else
            return 21;
        case 13:
          if (support_avx())
            return 48;
          else
            return 21;
        }
        break;
      case 4:
        switch (model) {
        case 5:
        case 6:
          if (support_avx())
            return 48;
          else
            return 21;
        case 7:
        case 15:
          if (support_avx())
            return 48;
          else
            return 21;
        case 14:
          if (support_avx())
            return 48;
          else
            return 21;
        case 12:
        case 13:
          return 21;
        }
        break;
      case 5:
        switch (model) {
        case 6:
          if (support_avx())
            return 48;
          else
            return 21;
        case 5:
        case 14:
          if (support_avx())
            return 48;
          else
            return 21;
        case 7:
          if (support_avx())
            return 48;
          else
            return 21;
        case 12:
          return 21;
        }
        break;
      case 9:
      case 8:
        switch (model) {
        case 14:
          if (support_avx())
            return 48;
          else
            return 21;
        }
        break;
      }
      break;
    case 0x7:
      return 23;
    case 0xf:
      switch (exfamily) {
      case 0:
        return 17;
      case 1:
        return 23;
      }
      break;
    }
    return 1;
  }
  if (vendor == 3) {
    switch (family) {
    case 0x4:
      return 25;
    case 0x5:
      return 26;
    case 0x6:
      return 27;
    case 0xf:
      switch (exfamily) {
      case 0:
      case 2:
        return 29;
      case 1:
      case 3:
      case 7:
      case 10:
        return 30;
      case 5:
        return 45;
      case 6:
        switch (model) {
        case 1:
          if (support_avx())
            return 46;
          else
            return 30;
        case 2:
        case 3:
          if (support_avx())
            return 47;
          else
            return 30;
        case 5:
          if (support_avx())
            return 50;
          else
            return 30;
        case 0:
        case 8:
          switch (exmodel) {
          case 1:
            if (support_avx())
              return 47;
            else
              return 30;
          case 3:
            if (support_avx())
              return 49;
            else
              return 30;
          case 6:
            if (support_avx())
              return 50;
            else
              return 30;
          }
          break;
        }
        break;
      case 8:
        switch (model) {
        case 1:
          if (support_avx())
            return 51;
          else
            return 30;
        }
      }
      break;
    }
    return 3;
  }
  if (vendor == 4) {
    switch (family) {
    case 0x4:
      return 33;
    case 0x5:
      return 34;
    case 0x6:
      return 35;
    }
    return 4;
  }
  if (vendor == 5) {
    switch (family) {
    case 0x5:
      return 36;
    }
    return 5;
  }
  if (vendor == 6) {
    switch (family) {
    case 0x5:
      return 37;
      break;
    case 0x6:
      return 43;
      break;
    }
    return 42;
  }
  if (vendor == 7) {
    switch (family) {
    case 0x5:
      return 38;
    }
    return 7;
  }
  if (vendor == 8) {
    switch (family) {
    case 0x5:
      return 39;
    }
    return 8;
  }
  if (vendor == 9) {
    switch (family) {
    case 0x5:
      return 40;
    }
    return 9;
  }
  if (vendor == 10) {
    switch (family) {
    case 0x5:
      return 41;
    }
    return 10;
  }
  return 0;
}
```