user: 下面的汇编指令对应的C源代码是什么：

```asm
<neuralops_caffe_im2col>:
  endbr64
  push   %r15
  mov    %rdi,%r15
  mov    %edx,%edi
  push   %r14
  push   %r13
  push   %r12
  mov    %ecx,%r12d
  push   %rbp
  push   %rbx
  sub    $0x58,%rsp
  mov    0x90(%rsp),%eax
  mov    %edx,0x8(%rsp)
  mov    0xa0(%rsp),%r13d
  mov    0xa8(%rsp),%ebx
  mov    %r8d,0x3c(%rsp)
  lea    (%rdx,%rax,2),%eax
  lea    -0x1(%r8),%edx
  mov    %r9d,0x20(%rsp)
  mov    0xc0(%rsp),%rcx
  imul   0xb0(%rsp),%edx
  add    $0x1,%edx
  sub    %edx,%eax
  cltd
  idiv   %r13d
  lea    -0x1(%r9),%edx
  imul   0xb8(%rsp),%edx
  add    $0x1,%edx
  add    $0x1,%eax
  mov    %eax,0x24(%rsp)
  mov    0x98(%rsp),%eax
  lea    (%r12,%rax,2),%eax
  sub    %edx,%eax
  cltd
  idiv   %ebx
  lea    -0x1(%rsi),%edx
  mov    %edx,0x38(%rsp)
  mov    %eax,0x28(%rsp)
  lea    0x1(%rax),%ebp
  mov    %edi,%eax
  imul   %r12d,%eax
  test   %esi,%esi
  je     L114
  cltq
  shl    $0x2,%rax
  mov    %rax,0x40(%rsp)
  test   %r8d,%r8d
  jle    L114
  cmp    $0x1,%ebx
  jne    L299
  mov    0xb0(%rsp),%eax
  mov    %r13d,%r14d
  mov    %r15,%r9
  mov    %r12d,%r8d
  imul   %r12d,%r14d
  mov    %ebp,%r15d
  mov    %r13d,%r11d
  imul   %r12d,%eax
  mov    %eax,0x48(%rsp)
  mov    0x90(%rsp),%eax
  imul   %r12d,%eax
  neg    %eax
  mov    %eax,0x4c(%rsp)
  mov    0x28(%rsp),%eax
  lea    0x4(,%rax,4),%rbx
  mov    %rbx,%rdx
L290:
  mov    0x90(%rsp),%eax
  movl   $0x0,0x34(%rsp)
  mov    %r14d,%r10d
  mov    %r8d,%r14d
  neg    %eax
  mov    %eax,0x2c(%rsp)
  mov    0x4c(%rsp),%eax
  mov    %eax,0x30(%rsp)
L78:
  mov    0x20(%rsp),%eax
  test   %eax,%eax
  jle    L213
  movl   $0x0,0x1c(%rsp)
  mov    $0x1,%ebx
  sub    0x98(%rsp),%ebx
  add    0x28(%rsp),%ebx
  cs nopw 0x0(%rax,%rax,1)
L135:
  mov    0x24(%rsp),%r13d
  test   %r13d,%r13d
  je     L76
  mov    %ebx,%eax
  sub    0x28(%rsp),%eax
  mov    0x30(%rsp),%ebp
  sub    $0x1,%eax
  mov    0x2c(%rsp),%r12d
  mov    %eax,0x18(%rsp)
L110:
  test   %r12d,%r12d
  js     L137
  cmp    %r12d,0x8(%rsp)
  jle    L137
  test   %r15d,%r15d
  je     L144
  mov    0x18(%rsp),%eax
  mov    %rcx,%rsi
L277:
  add    $0x4,%rsi
  test   %eax,%eax
  js     L82
  cmp    %eax,%r14d
  jle    L82
  lea    (%rax,%rbp,1),%edi
  add    $0x1,%eax
  movslq %edi,%rdi
  movss  (%r9,%rdi,4),%xmm0
  movss  %xmm0,-0x4(%rsi)
  cmp    %eax,%ebx
  jne    L277
L38:
  add    %rdx,%rcx
L144:
  add    %r11d,%r12d
  add    %r10d,%ebp
  sub    $0x1,%r13d
  jne    L110
L76:
  addl   $0x1,0x1c(%rsp)
  add    0xb8(%rsp),%ebx
  mov    0x1c(%rsp),%eax
  cmp    %eax,0x20(%rsp)
  jne    L135
L213:
  mov    0xb0(%rsp),%edi
  addl   $0x1,0x34(%rsp)
  add    %edi,0x2c(%rsp)
  mov    0x34(%rsp),%eax
  mov    0x48(%rsp),%edi
  add    %edi,0x30(%rsp)
  cmp    %eax,0x3c(%rsp)
  jne    L78
  subl   $0x1,0x38(%rsp)
  mov    0x38(%rsp),%eax
  mov    %r14d,%r8d
  mov    %r10d,%r14d
  add    0x40(%rsp),%r9
  cmp    $0xffffffff,%eax
  jne    L290
L114:
  add    $0x58,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax,%rax,1)
L82:
  add    $0x1,%eax
  movl   $0x0,-0x4(%rsi)
  cmp    %ebx,%eax
  jne    L277
  jmp    L38
  nopw   0x0(%rax,%rax,1)
L137:
  test   %r15d,%r15d
  je     L144
  mov    %rcx,%rdi
  xor    %esi,%esi
  mov    %r9,0x10(%rsp)
  mov    %r11d,0xa0(%rsp)
  mov    %r10d,0xc(%rsp)
  mov    %rdx,(%rsp)
  call   <memset@plt>
  mov    (%rsp),%rdx
  mov    0xc(%rsp),%r10d
  mov    %rax,%rcx
  mov    0x10(%rsp),%r9
  mov    0xa0(%rsp),%r11d
  add    %rdx,%rcx
  jmp    L144
L299:
  mov    0xb0(%rsp),%eax
  mov    %r13d,%r9d
  mov    %r12d,%r8d
  imul   %r12d,%r9d
  imul   %r12d,%eax
  mov    %r9d,%r10d
  mov    %r15,%r9
  mov    %eax,0x48(%rsp)
  mov    0x90(%rsp),%eax
  imul   %r12d,%eax
  neg    %eax
  mov    %eax,0x4c(%rsp)
  mov    0x28(%rsp),%eax
  lea    0x4(,%rax,4),%r11
  mov    %r11,%r12
  mov    %r13d,%r11d
  mov    %ebp,%r13d
L200:
  mov    0x90(%rsp),%eax
  movl   $0x0,0x34(%rsp)
  mov    %r12,%rdx
  mov    %r13d,%r12d
  mov    %r8d,%r13d
  neg    %eax
  mov    %eax,0x2c(%rsp)
  mov    0x4c(%rsp),%eax
  mov    %eax,0x30(%rsp)
L244:
  mov    0x98(%rsp),%eax
  mov    0x20(%rsp),%esi
  movl   $0x0,0x28(%rsp)
  neg    %eax
  mov    %eax,0x1c(%rsp)
  test   %esi,%esi
  jle    L145
L296:
  mov    0x24(%rsp),%r15d
  test   %r15d,%r15d
  je     L179
  mov    %r15d,%eax
  mov    0x30(%rsp),%ebp
  mov    0x2c(%rsp),%r14d
  mov    %r12d,%r15d
  mov    %eax,%r12d
  nopw   0x0(%rax,%rax,1)
L88:
  test   %r14d,%r14d
  js     L212
  cmp    %r14d,0x8(%rsp)
  jle    L212
  test   %r15d,%r15d
  je     L22
  mov    0x1c(%rsp),%eax
  lea    (%rcx,%rdx,1),%rdi
  nopl   0x0(%rax)
L192:
  add    $0x4,%rcx
  test   %eax,%eax
  js     L222
  cmp    %eax,%r13d
  jle    L222
  lea    (%rax,%rbp,1),%esi
  add    %ebx,%eax
  movslq %esi,%rsi
  movss  (%r9,%rsi,4),%xmm0
  movss  %xmm0,-0x4(%rcx)
  cmp    %rdi,%rcx
  jne    L192
L165:
  mov    %rdi,%rcx
L22:
  add    %r11d,%r14d
  add    %r10d,%ebp
  sub    $0x1,%r12d
  jne    L88
  mov    %r15d,%r12d
L179:
  addl   $0x1,0x28(%rsp)
  mov    0xb8(%rsp),%esi
  mov    0x28(%rsp),%eax
  add    %esi,0x1c(%rsp)
  cmp    %eax,0x20(%rsp)
  jne    L296
L145:
  mov    0xb0(%rsp),%esi
  addl   $0x1,0x34(%rsp)
  add    %esi,0x2c(%rsp)
  mov    0x34(%rsp),%eax
  mov    0x48(%rsp),%esi
  add    %esi,0x30(%rsp)
  cmp    %eax,0x3c(%rsp)
  jne    L244
  subl   $0x1,0x38(%rsp)
  mov    0x38(%rsp),%eax
  mov    %r13d,%r8d
  mov    %r12d,%r13d
  add    0x40(%rsp),%r9
  mov    %rdx,%r12
  cmp    $0xffffffff,%eax
  jne    L200
  add    $0x58,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopw   0x0(%rax,%rax,1)
L222:
  movl   $0x0,-0x4(%rcx)
  add    %ebx,%eax
  cmp    %rdi,%rcx
  jne    L192
  jmp    L165
  nop
L212:
  test   %r15d,%r15d
  je     L22
  mov    %rcx,%rdi
  xor    %esi,%esi
  mov    %r11d,0x18(%rsp)
  mov    %r9,0x10(%rsp)
  mov    %r10d,0xc(%rsp)
  mov    %rdx,(%rsp)
  call   <memset@plt>
  mov    (%rsp),%rdx
  mov    0xc(%rsp),%r10d
  mov    %rax,%rcx
  mov    0x10(%rsp),%r9
  mov    0x18(%rsp),%r11d
  add    %rdx,%rcx
  jmp    L22
```

assistant: ```c
void neuralops_caffe_im2col(const float *in_buf, const int channels, const int height, const int width, const int kernel_h, const int kernel_w, const int pad_h, const int pad_w, const int stride_h, const int stride_w, const int dilation_h, const int dilation_w, float *col_buf) {
  const float *data_im = in_buf;
  float *data_col = col_buf;
  const int output_h = (height + 2 * pad_h - (dilation_h * (kernel_h - 1) + 1)) / stride_h + 1;
  const int output_w = (width + 2 * pad_w - (dilation_w * (kernel_w - 1) + 1)) / stride_w + 1;
  const int channel_size = height * width;
  for (int channel = channels; channel--; data_im += channel_size) {
    for (int kernel_row = 0; kernel_row < kernel_h; kernel_row++) {
      for (int kernel_col = 0; kernel_col < kernel_w; kernel_col++) {
        int input_row = -pad_h + kernel_row * dilation_h;
        for (int output_rows = output_h; output_rows; output_rows--) {
          if (!(input_row >= 0 && input_row < height)) {
            for (int output_cols = output_w; output_cols; output_cols--) {
              *(data_col++) = 0.0f;
            }
          } else {
            int input_col = -pad_w + kernel_col * dilation_w;
            for (int output_col = output_w; output_col; output_col--) {
              if (input_col >= 0 && input_col < width) {
                *(data_col++) = data_im[input_row * width + input_col];
              } else {
                *(data_col++) = 0.0f;
              }
              input_col += stride_w;
            }
          }
          input_row += stride_h;
        }
      }
    }
  }
}
```