user: Converte this assembly snippet into its equivalent C code:

```asm
<l2ramtest>:
  endbr64
  push   %r15
  xor    %eax,%eax
  push   %r14
  mov    %rdi,%r14
  mov    $0x104b000,%edi
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  call   <report_device@plt>
  mov    0x4(%r14),%r13d
  mov    0x4(%r14),%r15d
  movl   $0x7,0x8(%r14)
  sar    $0x2,%r15d
  and    $0x3,%r13d
  and    $0x7ff,%r15d
  mov    %r15d,0x4(%rsp)
  nop
  movl   $0x0,(%r14)
  mov    $0xa,%edi
  xor    %eax,%eax
  lea    0x80040(%r14),%r12
  call   <report_subtest@plt>
  movslq %r13d,%rax
  lea    0x80000(%r14),%rsi
  xor    %ecx,%ecx
  mov    %rax,0x18(%rsp)
  mov    %r15d,%eax
  shl    $0x8,%eax
  mov    %rsi,0x20(%rsp)
  movl   $0xffffffff,0x80000(%r14)
  sub    $0x1,%eax
  mov    0x80000(%r14),%ebx
  mov    %eax,%edi
  mov    %eax,0x2c(%rsp)
  shr    $0x4,%edi
  mov    %ebx,%ebp
  and    $0xaaaaaaaa,%ebx
  mov    %rdi,%r8
  and    $0x55555555,%ebp
  shl    $0x4,%r8
L43:
  mov    0x4(%rsp),%r9d
  test   %r9d,%r9d
  je     L120
  lea    (%r8,%rcx,1),%rax
  lea    (%r12,%rax,4),%rdx
  mov    %rsi,%rax
  nopl   0x0(%rax)
L52:
  mov    %ebp,(%rax)
  add    $0x40,%rax
  mov    %ebx,-0x20(%rax)
  cmp    %rdx,%rax
  jne    L52
L120:
  lea    0x1(%rcx),%rax
  add    $0x4,%rsi
  cmp    0x18(%rsp),%rcx
  je     L127
  mov    %rax,%rcx
  jmp    L43
  nopw   0x0(%rax,%rax,1)
L127:
  lea    0x1(%r13),%eax
  movl   $0x0,0x8(%rsp)
  shl    $0x6,%rdi
  mov    %eax,0x28(%rsp)
  add    %rdi,%r12
  movq   $0x0,0x10(%rsp)
L63:
  mov    0x10(%rsp),%rax
  mov    0x4(%rsp),%r8d
  mov    0x20(%rsp),%r15
  lea    0x20(%rax),%r13
  test   %r8d,%r8d
  je     L162
  nopl   0x0(%rax,%rax,1)
L26:
  mov    (%r15),%eax
  cmp    %ebp,%eax
  je     L110
  mov    $0x1,%edi
  xor    %eax,%eax
  call   <fail@plt>
L110:
  lea    0x0(%r13,%r15,1),%rax
  mov    (%rax),%eax
  cmp    %ebx,%eax
  je     L173
  mov    $0x1,%edi
  xor    %eax,%eax
  call   <fail@plt>
L173:
  add    $0x40,%r15
  cmp    %r12,%r15
  jne    L26
L162:
  addl   $0x1,0x8(%rsp)
  mov    0x8(%rsp),%eax
  addq   $0x4,0x10(%rsp)
  cmp    0x28(%rsp),%eax
  jne    L63
  mov    $0xc,%edi
  xor    %eax,%eax
  call   <report_subtest@plt>
  mov    0x18(%rsp),%rbp
  mov    0x2c(%rsp),%r12d
  mov    $0x80000,%ecx
  lea    0x8(%r14),%rsi
  add    $0x5,%rbp
  shr    %r12d
  mov    %rbp,%r15
  add    %r12,%r12
  shl    $0x11,%r15
L201:
  mov    0x4(%rsp),%edi
  test   %edi,%edi
  je     L221
  lea    (%r12,%rcx,1),%rdx
  lea    (%r14,%rcx,4),%rax
  lea    (%rsi,%rdx,4),%rdx
  nopl   0x0(%rax)
L59:
  movl   $0x55555555,(%rax)
  add    $0x8,%rax
  movl   $0xaaaaaaaa,-0x4(%rax)
  cmp    %rdx,%rax
  jne    L59
L221:
  add    $0x20000,%rcx
  cmp    %r15,%rcx
  jne    L201
  lea    0x8(%r14),%rax
  mov    $0x80000,%r13d
  mov    %rax,0x8(%rsp)
L65:
  mov    0x4(%rsp),%ecx
  test   %ecx,%ecx
  je     L131
  mov    0x8(%rsp),%rsi
  lea    0x0(%r13,%r12,1),%rax
  lea    (%r14,%r13,4),%rbp
  lea    (%rsi,%rax,4),%rbx
  nopl   0x0(%rax,%rax,1)
L222:
  mov    0x0(%rbp),%eax
  cmp    $0x55555555,%eax
  je     L145
  mov    $0x3,%edi
  xor    %eax,%eax
  call   <fail@plt>
L145:
  mov    0x4(%rbp),%eax
  cmp    $0xaaaaaaaa,%eax
  je     L42
  mov    $0x3,%edi
  xor    %eax,%eax
  call   <fail@plt>
L42:
  add    $0x8,%rbp
  cmp    %rbx,%rbp
  jne    L222
L131:
  add    $0x20000,%r13
  cmp    %r15,%r13
  jne    L65
  mov    $0x80000,%ecx
  lea    0x8(%r14),%rsi
L237:
  mov    0x4(%rsp),%edx
  test   %edx,%edx
  je     L234
  lea    (%rcx,%r12,1),%rdx
  lea    (%r14,%rcx,4),%rax
  lea    (%rsi,%rdx,4),%rdx
  xchg   %ax,%ax
L183:
  movl   $0x55555555,0x4(%rax)
  add    $0x8,%rax
  movl   $0xaaaaaaaa,-0x8(%rax)
  cmp    %rax,%rdx
  jne    L183
L234:
  add    $0x20000,%rcx
  cmp    %r15,%rcx
  jne    L237
  lea    0x8(%r14),%rax
  mov    $0x80000,%r13d
  mov    %rax,0x8(%rsp)
L229:
  mov    0x4(%rsp),%eax
  test   %eax,%eax
  je     L226
  mov    0x8(%rsp),%rsi
  lea    0x0(%r13,%r12,1),%rax
  lea    (%r14,%r13,4),%rbp
  lea    (%rsi,%rax,4),%rbx
  nopl   0x0(%rax)
L107:
  mov    0x4(%rbp),%eax
  cmp    $0x55555555,%eax
  je     L119
  mov    $0x4,%edi
  xor    %eax,%eax
  call   <fail@plt>
L119:
  mov    0x0(%rbp),%eax
  cmp    $0xaaaaaaaa,%eax
  je     L57
  mov    $0x4,%edi
  xor    %eax,%eax
  call   <fail@plt>
L57:
  add    $0x8,%rbp
  cmp    %rbx,%rbp
  jne    L107
L226:
  add    $0x20000,%r13
  cmp    %r15,%r13
  jne    L229
  movl   $0x5,0x8(%r14)
  movl   $0x80000000,(%r14)
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

assistant: ```c
l2ramtest(volatile int *l2reg, volatile int *carea) {
  int i, j;
  int ways, waysize;
  int tagmask, pat55, patAA;
  report_device(0x0104b000);
  ways = (l2reg[1] & 3) + 1;
  waysize = ((l2reg[1] >> 2) & 0x7ff);
  l2reg[0x08 / 4] = 7;
  asm("nop;");
  l2reg[0] = 0;
  report_subtest(10);
  l2reg[0x80000 / 4] = -1;
  tagmask = l2reg[0x80000 / 4];
  pat55 = 0x55555555 & tagmask;
  patAA = 0xaaaaaaaa & tagmask;
  for (i = 0; i < ways; i++) {
    for (j = 0; j < waysize * 1024 / 4; j += 16) {
      l2reg[0x80000 / 4 + j + i] = pat55;
      l2reg[0x80000 / 4 + j + i + 8] = patAA;
    }
  }
  for (i = 0; i < ways; i++) {
    for (j = 0; j < waysize * 1024 / 4; j += 16) {
      if (l2reg[0x80000 / 4 + j] != pat55)
        fail(1);
      if (l2reg[0x80000 / 4 + j + i + 8] != patAA)
        fail(1);
    }
  }
  report_subtest(12);
  for (i = 0; i < ways; i++) {
    for (j = 0; j < waysize * 1024 / 4; j += 2) {
      l2reg[0x200000 / 4 + i * 0x80000 / 4 + j] = 0x55555555;
      l2reg[0x200000 / 4 + i * 0x80000 / 4 + j + 1] = 0xaaaaaaaa;
    }
  }
  for (i = 0; i < ways; i++) {
    for (j = 0; j < waysize * 1024 / 4; j += 2) {
      if (l2reg[0x200000 / 4 + i * 0x80000 / 4 + j] != 0x55555555)
        fail(3);
      if (l2reg[0x200000 / 4 + i * 0x80000 / 4 + j + 1] != 0xaaaaaaaa)
        fail(3);
    }
  }
  for (i = 0; i < ways; i++) {
    for (j = 0; j < waysize * 1024 / 4; j += 2) {
      l2reg[0x200000 / 4 + i * 0x80000 / 4 + j + 1] = 0x55555555;
      l2reg[0x200000 / 4 + i * 0x80000 / 4 + j] = 0xaaaaaaaa;
    }
  }
  for (i = 0; i < ways; i++) {
    for (j = 0; j < waysize * 1024 / 4; j += 2) {
      if (l2reg[0x200000 / 4 + i * 0x80000 / 4 + j + 1] != 0x55555555)
        fail(4);
      if (l2reg[0x200000 / 4 + i * 0x80000 / 4 + j] != 0xaaaaaaaa)
        fail(4);
    }
  }
  l2reg[0x08 / 4] = 5;
  l2reg[0] = 0x80000000;
}
```