user: 这段汇编代码用C语言表示是什么样的:

```asm
<cmp_canvas>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %ecx,0x10(%rsp)
  mov    %r8d,0x14(%rsp)
  test   %rdi,%rdi
  je     L242
  mov    %rsi,%r13
  test   %rsi,%rsi
  je     L242
  test   %ecx,%ecx
  jle    L98
  lea    -0x1(%rdx),%eax
  mov    %rdi,%rbp
  mov    %edx,%r9d
  xor    %r15d,%r15d
  mov    %eax,0x18(%rsp)
  mov    %edx,%eax
  xor    %r12d,%r12d
  xor    %r14d,%r14d
  shr    $0x4,%eax
  sub    $0x1,%eax
  add    $0x1,%rax
  shl    $0x4,%rax
  mov    %rax,0x20(%rsp)
  mov    %edx,%eax
  and    $0xfffffff0,%eax
  mov    %eax,0x1c(%rsp)
  nopl   0x0(%rax)
L23:
  test   %r9d,%r9d
  jle    L248
  mov    0x14(%rsp),%eax
  test   %eax,%eax
  jne    L26
  cmpl   $0xe,0x18(%rsp)
  jbe    L280
  movslq %r14d,%rcx
  mov    0x20(%rsp),%rdx
  xor    %eax,%eax
  pxor   %xmm1,%xmm1
  lea    0x0(%rbp,%rcx,1),%rsi
  pxor   %xmm6,%xmm6
  pxor   %xmm5,%xmm5
  add    %r13,%rcx
  xchg   %ax,%ax
L168:
  movdqu (%rsi,%rax,1),%xmm0
  movdqu (%rcx,%rax,1),%xmm7
  movdqa %xmm6,%xmm2
  movdqa %xmm5,%xmm4
  add    $0x10,%rax
  pcmpeqb %xmm7,%xmm0
  pandn  D14(%rip),%xmm0
  pcmpgtb %xmm0,%xmm2
  movdqa %xmm0,%xmm3
  punpcklbw %xmm2,%xmm3
  punpckhbw %xmm2,%xmm0
  pcmpgtw %xmm3,%xmm4
  movdqa %xmm3,%xmm2
  punpcklwd %xmm4,%xmm2
  punpckhwd %xmm4,%xmm3
  paddd  %xmm2,%xmm1
  movdqa %xmm5,%xmm2
  pcmpgtw %xmm0,%xmm2
  paddd  %xmm3,%xmm1
  movdqa %xmm0,%xmm3
  punpcklwd %xmm2,%xmm3
  punpckhwd %xmm2,%xmm0
  paddd  %xmm3,%xmm1
  paddd  %xmm0,%xmm1
  cmp    %rax,%rdx
  jne    L168
  movdqa %xmm1,%xmm0
  psrldq $0x8,%xmm0
  paddd  %xmm0,%xmm1
  movdqa %xmm1,%xmm0
  psrldq $0x4,%xmm0
  paddd  %xmm0,%xmm1
  movd   %xmm1,%eax
  add    %eax,%r12d
  mov    0x1c(%rsp),%eax
  cmp    %r9d,%eax
  je     L248
L215:
  lea    (%r14,%rax,1),%ecx
  movslq %ecx,%rcx
  movzbl 0x0(%rbp,%rcx,1),%edx
  cmp    %dl,0x0(%r13,%rcx,1)
  setne  %cl
  movzbl %cl,%ecx
  add    %ecx,%r12d
  lea    0x1(%rax),%ecx
  cmp    %ecx,%r9d
  jle    L248
  add    %r14d,%ecx
  movslq %ecx,%rcx
  movzbl 0x0(%r13,%rcx,1),%ebx
  cmp    %bl,0x0(%rbp,%rcx,1)
  setne  %cl
  movzbl %cl,%ecx
  add    %ecx,%r12d
  lea    0x2(%rax),%ecx
  cmp    %ecx,%r9d
  jle    L248
  add    %r14d,%ecx
  movslq %ecx,%rcx
  movzbl 0x0(%r13,%rcx,1),%edx
  cmp    %dl,0x0(%rbp,%rcx,1)
  setne  %cl
  movzbl %cl,%ecx
  add    %ecx,%r12d
  lea    0x3(%rax),%ecx
  cmp    %ecx,%r9d
  jle    L248
  add    %r14d,%ecx
  movslq %ecx,%rcx
  movzbl 0x0(%r13,%rcx,1),%ebx
  cmp    %bl,0x0(%rbp,%rcx,1)
  setne  %cl
  movzbl %cl,%ecx
  add    %ecx,%r12d
  lea    0x4(%rax),%ecx
  cmp    %ecx,%r9d
  jle    L248
  add    %r14d,%ecx
  movslq %ecx,%rcx
  movzbl 0x0(%r13,%rcx,1),%edi
  cmp    %dil,0x0(%rbp,%rcx,1)
  setne  %cl
  movzbl %cl,%ecx
  add    %ecx,%r12d
  lea    0x5(%rax),%ecx
  cmp    %ecx,%r9d
  jle    L248
  add    %r14d,%ecx
  movslq %ecx,%rcx
  movzbl 0x0(%r13,%rcx,1),%edx
  cmp    %dl,0x0(%rbp,%rcx,1)
  setne  %cl
  movzbl %cl,%ecx
  add    %ecx,%r12d
  lea    0x6(%rax),%ecx
  cmp    %ecx,%r9d
  jle    L248
  add    %r14d,%ecx
  movslq %ecx,%rcx
  movzbl 0x0(%r13,%rcx,1),%ebx
  cmp    %bl,0x0(%rbp,%rcx,1)
  setne  %cl
  movzbl %cl,%ecx
  add    %ecx,%r12d
  lea    0x7(%rax),%ecx
  cmp    %ecx,%r9d
  jle    L248
  add    %r14d,%ecx
  movslq %ecx,%rcx
  movzbl 0x0(%r13,%rcx,1),%edi
  cmp    %dil,0x0(%rbp,%rcx,1)
  setne  %cl
  movzbl %cl,%ecx
  add    %ecx,%r12d
  lea    0x8(%rax),%ecx
  cmp    %ecx,%r9d
  jle    L248
  add    %r14d,%ecx
  movslq %ecx,%rcx
  movzbl 0x0(%r13,%rcx,1),%edx
  cmp    %dl,0x0(%rbp,%rcx,1)
  setne  %cl
  movzbl %cl,%ecx
  add    %ecx,%r12d
  lea    0x9(%rax),%ecx
  cmp    %ecx,%r9d
  jle    L248
  add    %r14d,%ecx
  movslq %ecx,%rcx
  movzbl 0x0(%r13,%rcx,1),%ebx
  cmp    %bl,0x0(%rbp,%rcx,1)
  setne  %cl
  movzbl %cl,%ecx
  add    %ecx,%r12d
  lea    0xa(%rax),%ecx
  cmp    %ecx,%r9d
  jle    L248
  add    %r14d,%ecx
  movslq %ecx,%rcx
  movzbl 0x0(%r13,%rcx,1),%edi
  cmp    %dil,0x0(%rbp,%rcx,1)
  setne  %cl
  movzbl %cl,%ecx
  add    %ecx,%r12d
  lea    0xb(%rax),%ecx
  cmp    %ecx,%r9d
  jle    L248
  add    %r14d,%ecx
  movslq %ecx,%rcx
  movzbl 0x0(%r13,%rcx,1),%ebx
  cmp    %bl,0x0(%rbp,%rcx,1)
  setne  %cl
  movzbl %cl,%ecx
  add    %ecx,%r12d
  lea    0xc(%rax),%ecx
  cmp    %ecx,%r9d
  jle    L248
  add    %r14d,%ecx
  movslq %ecx,%rcx
  movzbl 0x0(%r13,%rcx,1),%edx
  cmp    %dl,0x0(%rbp,%rcx,1)
  setne  %cl
  movzbl %cl,%ecx
  add    %ecx,%r12d
  lea    0xd(%rax),%ecx
  cmp    %ecx,%r9d
  jle    L248
  add    %r14d,%ecx
  movslq %ecx,%rcx
  movzbl 0x0(%r13,%rcx,1),%edi
  cmp    %dil,0x0(%rbp,%rcx,1)
  setne  %cl
  add    $0xe,%eax
  movzbl %cl,%ecx
  add    %ecx,%r12d
  cmp    %eax,%r9d
  jle    L248
  add    %r14d,%eax
  cltq
  movzbl 0x0(%r13,%rax,1),%edx
  cmp    %dl,0x0(%rbp,%rax,1)
  setne  %al
  movzbl %al,%eax
  add    %eax,%r12d
L248:
  add    $0x1,%r15d
  add    %r9d,%r14d
  cmp    %r15d,0x10(%rsp)
  jne    L23
L75:
  add    $0x38,%rsp
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L26:
  mov    0x18(%rsp),%eax
  xor    %ebx,%ebx
  movslq %r14d,%r11
  mov    %r14d,0x28(%rsp)
  mov    %r9d,0x2c(%rsp)
  mov    %rbx,%r14
  mov    %r11,%rbx
  mov    %rax,0x8(%rsp)
  jmp    L265
  nopl   0x0(%rax,%rax,1)
L162:
  mov    %rax,%r14
L265:
  lea    0x0(%rbp,%rbx,1),%rax
  mov    %r14d,%esi
  movsbl (%rax,%r14,1),%ecx
  lea    0x0(%r13,%rbx,1),%rax
  movsbl (%rax,%r14,1),%r8d
  cmp    %r8b,%cl
  je     L126
  mov    %r15d,%edx
  lea    D13(%rip),%rdi
  add    $0x1,%r12d
  call   <printf@plt>
L126:
  lea    0x1(%r14),%rax
  cmp    0x8(%rsp),%r14
  jne    L162
  mov    0x28(%rsp),%r14d
  mov    0x2c(%rsp),%r9d
  jmp    L248
L280:
  xor    %eax,%eax
  jmp    L215
L98:
  xor    %r12d,%r12d
  jmp    L75
L242:
  mov    $0xffffffff,%r12d
  jmp    L75
```

tool_calls: name: unpack_data
arguments: tag: D14
data_type: byte[16]
name: unpack_data
arguments: tag: D13
data_type: string

tool: {"D14": [0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01]}

tool: D13: pix error (%5d, %5d) expected=%2d actual=%2d


assistant: ```c
int cmp_canvas(char *exp, char *act, int width, int height, int verbose) {
  int i, j;
  int sum = 0;
  int index;
  if (exp == NULL || act == NULL)
    return -1;
#pragma omp parallel for reduction(+ : sum) private(index, j)
  for (i = 0; i < height; i++) {
    for (j = 0; j < width; j++) {
      index = i * width + j;
      if (exp[index] != act[index]) {
        if (verbose)
          printf("pix error (%5d, %5d) expected=%2d actual=%2d\n", j, i, exp[index], act[index]);
        sum += 1;
      }
    }
  }
  return sum;
}
```