user: What is the c source code of the assembly code below:

```asm
<blur>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  sub    $0xe8,%rsp
  mov    %rdi,-0xc8(%rbp)
  mov    %rsi,-0xd0(%rbp)
  mov    %edx,-0xd4(%rbp)
  mov    %ecx,-0xd8(%rbp)
  mov    %r8d,-0xdc(%rbp)
  mov    %r9,-0xe8(%rbp)
  mov    -0xc8(%rbp),%rax
  mov    %rax,-0x68(%rbp)
  mov    -0xd0(%rbp),%rax
  add    $0x2,%rax
  mov    %rax,-0x60(%rbp)
  movl   $0x0,-0xb0(%rbp)
  jmp    L80
L218:
  mov    -0xd4(%rbp),%eax
  add    $0x1,%eax
  cltq
  add    %eax,%eax
  mov    %eax,%edx
  mov    -0x60(%rbp),%rax
  sub    $0x2,%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  movl   $0x0,-0xb4(%rbp)
  jmp    L259
L13:
  mov    -0xb4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,-0x6c(%rbp)
  cmpl   $0x0,-0x6c(%rbp)
  je     L340
  mov    -0xb4(%rbp),%eax
  cltq
  mov    0x10(%rbp),%edx
  movslq %edx,%rdx
  sub    %rdx,%rax
  lea    (%rax,%rax,1),%rdx
  mov    -0x60(%rbp),%rax
  lea    (%rdx,%rax,1),%rbx
  mov    -0x6c(%rbp),%eax
  imul   0x18(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0xe8(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x18(%rbp)
  mov    0x10(%rbp),%eax
  sub    -0xb4(%rbp),%eax
  mov    %eax,-0xac(%rbp)
  jmp    L101
L77:
  mov    -0xac(%rbp),%eax
  cltq
  add    %rax,%rax
  add    %rbx,%rax
  movzwl (%rax),%edx
  mov    -0xac(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x18(%rbp),%rax
  add    %rcx,%rax
  mov    (%rax),%eax
  mov    %eax,%ecx
  mov    -0xac(%rbp),%eax
  cltq
  add    %rax,%rax
  add    %rbx,%rax
  add    %ecx,%edx
  mov    %dx,(%rax)
  addl   $0x1,-0xac(%rbp)
L101:
  mov    -0xac(%rbp),%eax
  cmp    0x18(%rbp),%eax
  jl     L77
L340:
  addl   $0x1,-0xb4(%rbp)
L259:
  mov    -0xb4(%rbp),%eax
  cmp    0x10(%rbp),%eax
  jl     L13
  jmp    L289
L195:
  mov    -0xb4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,-0x70(%rbp)
  cmpl   $0x0,-0x70(%rbp)
  je     L368
  mov    -0xb4(%rbp),%eax
  cltq
  mov    0x10(%rbp),%edx
  movslq %edx,%rdx
  sub    %rdx,%rax
  lea    (%rax,%rax,1),%rdx
  mov    -0x60(%rbp),%rax
  lea    (%rdx,%rax,1),%rbx
  mov    -0x70(%rbp),%eax
  imul   0x18(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0xe8(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x20(%rbp)
  movl   $0x0,-0xa8(%rbp)
  jmp    L97
L179:
  mov    -0xa8(%rbp),%eax
  cltq
  add    %rax,%rax
  add    %rbx,%rax
  movzwl (%rax),%edx
  mov    -0xa8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x20(%rbp),%rax
  add    %rcx,%rax
  mov    (%rax),%eax
  mov    %eax,%ecx
  mov    -0xa8(%rbp),%eax
  cltq
  add    %rax,%rax
  add    %rbx,%rax
  add    %ecx,%edx
  mov    %dx,(%rax)
  addl   $0x1,-0xa8(%rbp)
L97:
  mov    -0xa8(%rbp),%eax
  cmp    0x18(%rbp),%eax
  jl     L179
L368:
  addl   $0x1,-0xb4(%rbp)
L289:
  mov    -0xd4(%rbp),%eax
  sub    0x10(%rbp),%eax
  cmp    %eax,-0xb4(%rbp)
  jl     L195
  jmp    L38
L310:
  mov    -0xb4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,-0x78(%rbp)
  cmpl   $0x0,-0x78(%rbp)
  je     L99
  mov    -0xb4(%rbp),%eax
  cltq
  mov    0x10(%rbp),%edx
  movslq %edx,%rdx
  sub    %rdx,%rax
  lea    (%rax,%rax,1),%rdx
  mov    -0x60(%rbp),%rax
  lea    (%rdx,%rax,1),%rbx
  mov    0x10(%rbp),%edx
  mov    -0xd4(%rbp),%eax
  add    %edx,%eax
  sub    -0xb4(%rbp),%eax
  mov    %eax,-0x74(%rbp)
  mov    -0x78(%rbp),%eax
  imul   0x18(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0xe8(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x28(%rbp)
  movl   $0x0,-0xa4(%rbp)
  jmp    L90
L317:
  mov    -0xa4(%rbp),%eax
  cltq
  add    %rax,%rax
  add    %rbx,%rax
  movzwl (%rax),%edx
  mov    -0xa4(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x28(%rbp),%rax
  add    %rcx,%rax
  mov    (%rax),%eax
  mov    %eax,%ecx
  mov    -0xa4(%rbp),%eax
  cltq
  add    %rax,%rax
  add    %rbx,%rax
  add    %ecx,%edx
  mov    %dx,(%rax)
  addl   $0x1,-0xa4(%rbp)
L90:
  mov    -0xa4(%rbp),%eax
  cmp    -0x74(%rbp),%eax
  jl     L317
L99:
  addl   $0x1,-0xb4(%rbp)
L38:
  mov    -0xb4(%rbp),%eax
  cmp    -0xd4(%rbp),%eax
  jl     L310
  mov    -0xdc(%rbp),%eax
  cltq
  add    %rax,-0x68(%rbp)
  mov    -0xd4(%rbp),%eax
  cltq
  add    $0x1,%rax
  add    %rax,%rax
  add    %rax,-0x60(%rbp)
  addl   $0x1,-0xb0(%rbp)
L80:
  mov    -0xb0(%rbp),%eax
  cmp    -0xd8(%rbp),%eax
  jl     L218
  mov    -0xd0(%rbp),%rax
  mov    %rax,-0x60(%rbp)
  movl   $0x0,-0xb4(%rbp)
  jmp    L154
L152:
  movl   $0x0,-0xb0(%rbp)
  jmp    L142
L52:
  mov    -0xd4(%rbp),%eax
  add    $0x1,%eax
  imul   -0xb0(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    (%rax,%rax,1),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x38(%rbp)
  mov    -0x38(%rbp),%rax
  movzwl (%rax),%eax
  movzwl %ax,%eax
  mov    %eax,-0x80(%rbp)
  cmpl   $0x0,-0x80(%rbp)
  je     L65
  mov    -0xd4(%rbp),%eax
  cltq
  lea    (%rax,%rax,1),%rdx
  mov    -0x38(%rbp),%rax
  lea    (%rdx,%rax,1),%rbx
  mov    -0x80(%rbp),%eax
  sub    $0xffffff80,%eax
  sar    $0x8,%eax
  mov    %eax,-0x7c(%rbp)
  mov    -0x7c(%rbp),%eax
  imul   0x18(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0xe8(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x30(%rbp)
  mov    -0x38(%rbp),%rax
  movw   $0x80,(%rax)
  mov    0x10(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0xa0(%rbp)
  jmp    L365
L339:
  movzwl (%rbx),%edx
  mov    -0xa0(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x30(%rbp),%rax
  add    %rcx,%rax
  mov    (%rax),%eax
  add    %edx,%eax
  mov    %ax,(%rbx)
  mov    -0xd4(%rbp),%eax
  cltq
  add    $0x1,%rax
  add    %rax,%rax
  add    %rax,%rbx
  addl   $0x1,-0xa0(%rbp)
L365:
  mov    -0xa0(%rbp),%eax
  cmp    0x18(%rbp),%eax
  jl     L339
L65:
  addl   $0x1,-0xb0(%rbp)
L142:
  mov    -0xb0(%rbp),%eax
  cmp    0x10(%rbp),%eax
  jl     L52
  jmp    L372
L34:
  mov    -0xd4(%rbp),%eax
  add    $0x1,%eax
  imul   -0xb0(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    (%rax,%rax,1),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x48(%rbp)
  mov    -0x48(%rbp),%rax
  movzwl (%rax),%eax
  movzwl %ax,%eax
  mov    %eax,-0x88(%rbp)
  cmpl   $0x0,-0x88(%rbp)
  je     L219
  mov    -0xd4(%rbp),%eax
  add    $0x1,%eax
  imul   0x10(%rbp),%eax
  cltq
  add    %rax,%rax
  mov    $0xfffffffffffffffe,%rdx
  sub    %rax,%rdx
  mov    -0x48(%rbp),%rax
  lea    (%rdx,%rax,1),%rbx
  mov    -0x88(%rbp),%eax
  sub    $0xffffff80,%eax
  sar    $0x8,%eax
  mov    %eax,-0x84(%rbp)
  mov    -0x84(%rbp),%eax
  imul   0x18(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0xe8(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x40(%rbp)
  mov    -0x48(%rbp),%rax
  movw   $0x80,(%rax)
  movl   $0x0,-0x9c(%rbp)
  jmp    L112
L98:
  movzwl (%rbx),%edx
  mov    -0x9c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  mov    (%rax),%eax
  add    %edx,%eax
  mov    %ax,(%rbx)
  mov    -0xd4(%rbp),%eax
  cltq
  add    $0x1,%rax
  add    %rax,%rax
  add    %rax,%rbx
  addl   $0x1,-0x9c(%rbp)
L112:
  mov    -0x9c(%rbp),%eax
  cmp    0x18(%rbp),%eax
  jl     L98
L219:
  addl   $0x1,-0xb0(%rbp)
L372:
  mov    -0xd8(%rbp),%eax
  sub    0x10(%rbp),%eax
  cmp    %eax,-0xb0(%rbp)
  jl     L34
  jmp    L217
L131:
  mov    -0xd4(%rbp),%eax
  add    $0x1,%eax
  imul   -0xb0(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    (%rax,%rax,1),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x58(%rbp)
  mov    -0x58(%rbp),%rax
  movzwl (%rax),%eax
  movzwl %ax,%eax
  mov    %eax,-0x94(%rbp)
  cmpl   $0x0,-0x94(%rbp)
  je     L64
  mov    0x10(%rbp),%edx
  mov    -0xd8(%rbp),%eax
  add    %edx,%eax
  sub    -0xb0(%rbp),%eax
  mov    %eax,-0x90(%rbp)
  mov    -0xd4(%rbp),%eax
  add    $0x1,%eax
  imul   0x10(%rbp),%eax
  cltq
  add    %rax,%rax
  mov    $0xfffffffffffffffe,%rdx
  sub    %rax,%rdx
  mov    -0x58(%rbp),%rax
  lea    (%rdx,%rax,1),%rbx
  mov    -0x94(%rbp),%eax
  sub    $0xffffff80,%eax
  sar    $0x8,%eax
  mov    %eax,-0x8c(%rbp)
  mov    -0x8c(%rbp),%eax
  imul   0x18(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0xe8(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x50(%rbp)
  mov    -0x58(%rbp),%rax
  movw   $0x80,(%rax)
  movl   $0x0,-0x98(%rbp)
  jmp    L197
L127:
  movzwl (%rbx),%edx
  mov    -0x98(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x50(%rbp),%rax
  add    %rcx,%rax
  mov    (%rax),%eax
  add    %edx,%eax
  mov    %ax,(%rbx)
  mov    -0xd4(%rbp),%eax
  cltq
  add    $0x1,%rax
  add    %rax,%rax
  add    %rax,%rbx
  addl   $0x1,-0x98(%rbp)
L197:
  mov    -0x98(%rbp),%eax
  cmp    -0x90(%rbp),%eax
  jl     L127
L64:
  addl   $0x1,-0xb0(%rbp)
L217:
  mov    -0xb0(%rbp),%eax
  cmp    -0xd8(%rbp),%eax
  jl     L131
  addq   $0x2,-0x60(%rbp)
  addl   $0x1,-0xb4(%rbp)
L154:
  mov    -0xb4(%rbp),%eax
  cmp    -0xd4(%rbp),%eax
  jl     L152
  mov    -0xd0(%rbp),%rax
  mov    %rax,-0x60(%rbp)
  mov    -0xc8(%rbp),%rax
  mov    %rax,-0x68(%rbp)
  movl   $0x0,-0xb0(%rbp)
  jmp    L194
L148:
  movl   $0x0,-0xb4(%rbp)
  jmp    L351
L230:
  mov    -0xb4(%rbp),%eax
  cltq
  lea    (%rax,%rax,1),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  movzwl (%rax),%eax
  shr    $0x8,%ax
  mov    %eax,%ecx
  mov    -0xb4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  mov    %ecx,%edx
  mov    %dl,(%rax)
  addl   $0x1,-0xb4(%rbp)
L351:
  mov    -0xb4(%rbp),%eax
  cmp    -0xd4(%rbp),%eax
  jl     L230
  mov    -0xdc(%rbp),%eax
  cltq
  add    %rax,-0x68(%rbp)
  mov    -0xd4(%rbp),%eax
  cltq
  add    $0x1,%rax
  add    %rax,%rax
  add    %rax,-0x60(%rbp)
  addl   $0x1,-0xb0(%rbp)
L194:
  mov    -0xb0(%rbp),%eax
  cmp    -0xd8(%rbp),%eax
  jl     L148
  nop
  nop
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

assistant: ```c
void blur(unsigned char *buffer, unsigned short *tmp2, int width, int height, int stride, int *m2, int r, int mwidth) {
  int x, y;
  unsigned char *s = buffer;
  unsigned short *t = tmp2 + 1;
  for (y = 0; y < height; y++) {
    memset(t - 1, 0, (width + 1) * sizeof(short));
    for (x = 0; x < r; x++) {
      const int src = s[x];
      if (src) {
        register unsigned short *dstp = t + x - r;
        int mx;
        unsigned *m3 = m2 + src * mwidth;
        for (mx = r - x; mx < mwidth; mx++) {
          dstp[mx] += m3[mx];
        }
      }
    }
    for (; x < width - r; x++) {
      const int src = s[x];
      if (src) {
        register unsigned short *dstp = t + x - r;
        int mx;
        unsigned *m3 = m2 + src * mwidth;
        for (mx = 0; mx < mwidth; mx++) {
          dstp[mx] += m3[mx];
        }
      }
    }
    for (; x < width; x++) {
      const int src = s[x];
      if (src) {
        register unsigned short *dstp = t + x - r;
        int mx;
        const int x2 = r + width - x;
        unsigned *m3 = m2 + src * mwidth;
        for (mx = 0; mx < x2; mx++) {
          dstp[mx] += m3[mx];
        }
      }
    }
    s += stride;
    t += width + 1;
  }
  t = tmp2;
  for (x = 0; x < width; x++) {
    for (y = 0; y < r; y++) {
      unsigned short *srcp = t + y * (width + 1) + 1;
      int src = *srcp;
      if (src) {
        register unsigned short *dstp = srcp - 1 + width + 1;
        const int src2 = (src + 128) >> 8;
        unsigned *m3 = m2 + src2 * mwidth;
        int mx;
        *srcp = 128;
        for (mx = r - 1; mx < mwidth; mx++) {
          *dstp += m3[mx];
          dstp += width + 1;
        }
      }
    }
    for (; y < height - r; y++) {
      unsigned short *srcp = t + y * (width + 1) + 1;
      int src = *srcp;
      if (src) {
        register unsigned short *dstp = srcp - 1 - r * (width + 1);
        const int src2 = (src + 128) >> 8;
        unsigned *m3 = m2 + src2 * mwidth;
        int mx;
        *srcp = 128;
        for (mx = 0; mx < mwidth; mx++) {
          *dstp += m3[mx];
          dstp += width + 1;
        }
      }
    }
    for (; y < height; y++) {
      unsigned short *srcp = t + y * (width + 1) + 1;
      int src = *srcp;
      if (src) {
        const int y2 = r + height - y;
        register unsigned short *dstp = srcp - 1 - r * (width + 1);
        const int src2 = (src + 128) >> 8;
        unsigned *m3 = m2 + src2 * mwidth;
        int mx;
        *srcp = 128;
        for (mx = 0; mx < y2; mx++) {
          *dstp += m3[mx];
          dstp += width + 1;
        }
      }
    }
    t++;
  }
  t = tmp2;
  s = buffer;
  for (y = 0; y < height; y++) {
    for (x = 0; x < width; x++) {
      s[x] = t[x] >> 8;
    }
    s += stride;
    t += width + 1;
  }
}
```