ylfeng/ReF-Decompile-dataset huggingface dataset:
user: What is the c source code of the assembly code below:

```asm
<utf8codepoint>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  and    $0xf8,%eax
  cmp    $0xf0,%eax
  jne    L36
  cmpq   $0x0,-0x20(%rbp)
  je     L13
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  shl    $0x12,%eax
  and    $0x1c0000,%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  shl    $0xc,%eax
  and    $0x3f000,%eax
  or     %eax,%edx
  mov    -0x8(%rbp),%rax
  add    $0x2,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  shl    $0x6,%eax
  and    $0xfc0,%eax
  or     %eax,%edx
  mov    -0x8(%rbp),%rax
  add    $0x3,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  and    $0x3f,%eax
  or     %eax,%edx
  mov    -0x20(%rbp),%rax
  mov    %edx,(%rax)
L13:
  addq   $0x4,-0x8(%rbp)
  jmp    L95
L36:
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  and    $0xf0,%eax
  cmp    $0xe0,%eax
  jne    L38
  cmpq   $0x0,-0x20(%rbp)
  je     L68
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  shl    $0xc,%eax
  movzwl %ax,%edx
  mov    -0x8(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  shl    $0x6,%eax
  and    $0xfc0,%eax
  or     %eax,%edx
  mov    -0x8(%rbp),%rax
  add    $0x2,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  and    $0x3f,%eax
  or     %eax,%edx
  mov    -0x20(%rbp),%rax
  mov    %edx,(%rax)
L68:
  addq   $0x3,-0x8(%rbp)
  jmp    L95
L38:
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  and    $0xe0,%eax
  cmp    $0xc0,%eax
  jne    L15
  cmpq   $0x0,-0x20(%rbp)
  je     L89
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  shl    $0x6,%eax
  and    $0x7c0,%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  and    $0x3f,%eax
  or     %eax,%edx
  mov    -0x20(%rbp),%rax
  mov    %edx,(%rax)
L89:
  addq   $0x2,-0x8(%rbp)
  jmp    L95
L15:
  cmpq   $0x0,-0x20(%rbp)
  je     L40
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%edx
  mov    -0x20(%rbp),%rax
  mov    %edx,(%rax)
L40:
  addq   $0x1,-0x8(%rbp)
L95:
  mov    -0x8(%rbp),%rax
  pop    %rbp
  ret
```

assistant: ```c
void *utf8codepoint(const void *__restrict__ str, int *__restrict__ out_codepoint) {
  const char *s = (const char *)str;
  if (0xf0 == (0xf8 & s[0])) {
    if (out_codepoint) {
      *out_codepoint = ((0x07 & s[0]) << 18) | ((0x3f & s[1]) << 12) | ((0x3f & s[2]) << 6) | (0x3f & s[3]);
    }
    s += 4;
  } else if (0xe0 == (0xf0 & s[0])) {
    if (out_codepoint) {
      *out_codepoint = ((0x0f & s[0]) << 12) | ((0x3f & s[1]) << 6) | (0x3f & s[2]);
    }
    s += 3;
  } else if (0xc0 == (0xe0 & s[0])) {
    if (out_codepoint) {
      *out_codepoint = ((0x1f & s[0]) << 6) | (0x3f & s[1]);
    }
    s += 2;
  } else {
    if (out_codepoint) {
      *out_codepoint = s[0];
    }
    s += 1;
  }
  return (void *)s;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<utf8codepoint>:
  endbr64
  mov    %rdi,%rax
  mov    %rsi,%rcx
  movsbl (%rdi),%edx
  mov    %edx,%esi
  and    $0xf8,%esi
  cmp    $0xf0,%esi
  je     L49
  mov    %edx,%esi
  and    $0xf0,%esi
  cmp    $0xe0,%esi
  je     L16
  mov    %edx,%esi
  and    $0xe0,%esi
  cmp    $0xc0,%esi
  je     L57
  test   %rcx,%rcx
  je     L27
  mov    %edx,(%rcx)
L27:
  add    $0x1,%rax
  ret
L49:
  test   %rcx,%rcx
  je     L39
  movsbl 0x1(%rdi),%esi
  shl    $0xc,%esi
  and    $0x3f000,%esi
  shl    $0x12,%edx
  and    $0x1c0000,%edx
  or     %esi,%edx
  movzbl 0x3(%rdi),%esi
  and    $0x3f,%esi
  or     %esi,%edx
  movsbl 0x2(%rdi),%esi
  shl    $0x6,%esi
  and    $0xfc0,%esi
  or     %esi,%edx
  mov    %edx,(%rcx)
L39:
  add    $0x4,%rax
  ret
L16:
  test   %rcx,%rcx
  je     L32
  movsbl 0x1(%rdi),%esi
  shl    $0x6,%esi
  and    $0xfc0,%esi
  shl    $0xc,%edx
  movzwl %dx,%edx
  or     %esi,%edx
  movzbl 0x2(%rdi),%esi
  and    $0x3f,%esi
  or     %esi,%edx
  mov    %edx,(%rcx)
L32:
  add    $0x3,%rax
  ret
L57:
  test   %rcx,%rcx
  je     L54
  shl    $0x6,%edx
  and    $0x7c0,%edx
  movzbl 0x1(%rdi),%esi
  and    $0x3f,%esi
  or     %esi,%edx
  mov    %edx,(%rcx)
L54:
  add    $0x2,%rax
  ret
```

assistant: ```c
void *utf8codepoint(const void *__restrict__ str, int *__restrict__ out_codepoint) {
  const char *s = (const char *)str;
  if (0xf0 == (0xf8 & s[0])) {
    if (out_codepoint) {
      *out_codepoint = ((0x07 & s[0]) << 18) | ((0x3f & s[1]) << 12) | ((0x3f & s[2]) << 6) | (0x3f & s[3]);
    }
    s += 4;
  } else if (0xe0 == (0xf0 & s[0])) {
    if (out_codepoint) {
      *out_codepoint = ((0x0f & s[0]) << 12) | ((0x3f & s[1]) << 6) | (0x3f & s[2]);
    }
    s += 3;
  } else if (0xc0 == (0xe0 & s[0])) {
    if (out_codepoint) {
      *out_codepoint = ((0x1f & s[0]) << 6) | (0x3f & s[1]);
    }
    s += 2;
  } else {
    if (out_codepoint) {
      *out_codepoint = s[0];
    }
    s += 1;
  }
  return (void *)s;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<utf8codepoint>:
  endbr64
  movsbl (%rdi),%edx
  mov    %rsi,%rcx
  mov    %rdi,%rax
  mov    %edx,%esi
  and    $0xf8,%esi
  cmp    $0xf0,%esi
  je     L66
  mov    %edx,%esi
  and    $0xf0,%esi
  cmp    $0xe0,%esi
  je     L55
  mov    %edx,%esi
  and    $0xe0,%esi
  cmp    $0xc0,%esi
  je     L62
  test   %rcx,%rcx
  je     L65
  mov    %edx,(%rcx)
L65:
  add    $0x1,%rax
  ret
  nopl   (%rax)
L55:
  test   %rcx,%rcx
  je     L58
  movsbl 0x1(%rdi),%esi
  shl    $0xc,%edx
  movzwl %dx,%edx
  shl    $0x6,%esi
  and    $0xfc0,%esi
  or     %esi,%edx
  movzbl 0x2(%rdi),%esi
  and    $0x3f,%esi
  or     %esi,%edx
  mov    %edx,(%rcx)
L58:
  add    $0x3,%rax
  ret
  nopw   0x0(%rax,%rax,1)
L66:
  test   %rcx,%rcx
  je     L54
  movsbl 0x1(%rdi),%esi
  shl    $0x12,%edx
  and    $0x1c0000,%edx
  shl    $0xc,%esi
  and    $0x3f000,%esi
  or     %esi,%edx
  movzbl 0x3(%rdi),%esi
  and    $0x3f,%esi
  or     %esi,%edx
  movsbl 0x2(%rdi),%esi
  shl    $0x6,%esi
  and    $0xfc0,%esi
  or     %esi,%edx
  mov    %edx,(%rcx)
L54:
  add    $0x4,%rax
  ret
  nopl   0x0(%rax)
L62:
  test   %rcx,%rcx
  je     L42
  movzbl 0x1(%rdi),%esi
  shl    $0x6,%edx
  and    $0x7c0,%edx
  and    $0x3f,%esi
  or     %esi,%edx
  mov    %edx,(%rcx)
L42:
  add    $0x2,%rax
  ret
```

assistant: ```c
void *utf8codepoint(const void *__restrict__ str, int *__restrict__ out_codepoint) {
  const char *s = (const char *)str;
  if (0xf0 == (0xf8 & s[0])) {
    if (out_codepoint) {
      *out_codepoint = ((0x07 & s[0]) << 18) | ((0x3f & s[1]) << 12) | ((0x3f & s[2]) << 6) | (0x3f & s[3]);
    }
    s += 4;
  } else if (0xe0 == (0xf0 & s[0])) {
    if (out_codepoint) {
      *out_codepoint = ((0x0f & s[0]) << 12) | ((0x3f & s[1]) << 6) | (0x3f & s[2]);
    }
    s += 3;
  } else if (0xc0 == (0xe0 & s[0])) {
    if (out_codepoint) {
      *out_codepoint = ((0x1f & s[0]) << 6) | (0x3f & s[1]);
    }
    s += 2;
  } else {
    if (out_codepoint) {
      *out_codepoint = s[0];
    }
    s += 1;
  }
  return (void *)s;
}
```
user: 这段汇编代码用C语言表示是什么样的?

```asm
<utf8codepoint>:
  endbr64
  movsbl (%rdi),%edx
  mov    %rsi,%rcx
  mov    %rdi,%rax
  mov    %edx,%esi
  and    $0xf8,%esi
  cmp    $0xf0,%esi
  je     L68
  mov    %edx,%esi
  and    $0xf0,%esi
  cmp    $0xe0,%esi
  je     L30
  mov    %edx,%esi
  and    $0xe0,%esi
  cmp    $0xc0,%esi
  je     L0
  test   %rcx,%rcx
  je     L47
  mov    %edx,(%rcx)
L47:
  add    $0x1,%rax
  ret
  nopl   (%rax)
L30:
  test   %rcx,%rcx
  je     L37
  movsbl 0x1(%rdi),%esi
  shl    $0xc,%edx
  movzwl %dx,%edx
  shl    $0x6,%esi
  and    $0xfc0,%esi
  or     %esi,%edx
  movzbl 0x2(%rdi),%esi
  and    $0x3f,%esi
  or     %esi,%edx
  mov    %edx,(%rcx)
L37:
  add    $0x3,%rax
  ret
  nopw   0x0(%rax,%rax,1)
L68:
  test   %rcx,%rcx
  je     L22
  movsbl 0x1(%rdi),%esi
  shl    $0x12,%edx
  and    $0x1c0000,%edx
  shl    $0xc,%esi
  and    $0x3f000,%esi
  or     %esi,%edx
  movzbl 0x3(%rdi),%esi
  and    $0x3f,%esi
  or     %esi,%edx
  movsbl 0x2(%rdi),%esi
  shl    $0x6,%esi
  and    $0xfc0,%esi
  or     %esi,%edx
  mov    %edx,(%rcx)
L22:
  add    $0x4,%rax
  ret
  nopl   0x0(%rax)
L0:
  test   %rcx,%rcx
  je     L27
  movzbl 0x1(%rdi),%esi
  shl    $0x6,%edx
  and    $0x7c0,%edx
  and    $0x3f,%esi
  or     %esi,%edx
  mov    %edx,(%rcx)
L27:
  add    $0x2,%rax
  ret
```

assistant: ```c
void *utf8codepoint(const void *__restrict__ str, int *__restrict__ out_codepoint) {
  const char *s = (const char *)str;
  if (0xf0 == (0xf8 & s[0])) {
    if (out_codepoint) {
      *out_codepoint = ((0x07 & s[0]) << 18) | ((0x3f & s[1]) << 12) | ((0x3f & s[2]) << 6) | (0x3f & s[3]);
    }
    s += 4;
  } else if (0xe0 == (0xf0 & s[0])) {
    if (out_codepoint) {
      *out_codepoint = ((0x0f & s[0]) << 12) | ((0x3f & s[1]) << 6) | (0x3f & s[2]);
    }
    s += 3;
  } else if (0xc0 == (0xe0 & s[0])) {
    if (out_codepoint) {
      *out_codepoint = ((0x1f & s[0]) << 6) | (0x3f & s[1]);
    }
    s += 2;
  } else {
    if (out_codepoint) {
      *out_codepoint = s[0];
    }
    s += 1;
  }
  return (void *)s;
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<copy>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x48,%rsp
  mov    %edi,-0x64(%rbp)
  mov    %esi,-0x68(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  mov    %rsp,%rax
  mov    %rax,%rbx
  mov    $0x0,%eax
  call   <getpagesize@plt>
  mov    %rax,-0x50(%rbp)
  mov    -0x50(%rbp),%rax
  mov    %rax,%rdx
  sub    $0x1,%rdx
  mov    %rdx,-0x48(%rbp)
  mov    %rax,%r14
  mov    $0x0,%r15d
  mov    %rax,%r12
  mov    $0x0,%r13d
  mov    $0x10,%edx
  sub    $0x1,%rdx
  add    %rdx,%rax
  mov    $0x10,%esi
  mov    $0x0,%edx
  div    %rsi
  imul   $0x10,%rax,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffff000,%rcx
  mov    %rsp,%rdx
  sub    %rcx,%rdx
L31:
  cmp    %rdx,%rsp
  je     L51
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L31
L51:
  mov    %rax,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  mov    %rax,%rdx
  and    $0xfff,%edx
  test   %rdx,%rdx
  je     L85
  and    $0xfff,%eax
  sub    $0x8,%rax
  add    %rsp,%rax
  orq    $0x0,(%rax)
L85:
  mov    %rsp,%rax
  add    $0x0,%rax
  mov    %rax,-0x40(%rbp)
  mov    -0x50(%rbp),%rdx
  mov    -0x40(%rbp),%rcx
  mov    -0x64(%rbp),%eax
  mov    %rcx,%rsi
  mov    %eax,%edi
  call   <read@plt>
  mov    %eax,-0x54(%rbp)
  cmpl   $0x0,-0x54(%rbp)
  jns    L45
  mov    D4(%rip),%rax
  mov    (%rax),%rdx
  mov    D15(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,%rdx
  je     L45
  mov    $0xffffffff,%eax
  jmp    L43
L45:
  cmpl   $0x0,-0x54(%rbp)
  jle    L37
  mov    -0x54(%rbp),%edx
  mov    -0x40(%rbp),%rcx
  mov    -0x68(%rbp),%eax
  mov    %rcx,%rsi
  mov    %eax,%edi
  call   <write@plt>
  test   %rax,%rax
  jns    L37
  mov    $0xffffffff,%eax
  jmp    L43
L37:
  mov    $0x0,%eax
L43:
  mov    %rbx,%rsp
  mov    -0x38(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L16
  call   <__stack_chk_fail@plt>
L16:
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
```

assistant: ```c
int copy(int from, int to) {
  size_t bsize = getpagesize();
  char buf[bsize];
  int nread = read(from, buf, bsize);
  if (nread < 0 && errno != EAGAIN) {
    return -1;
  }
  if (nread > 0) {
    if (write(to, buf, nread) < 0) {
      return -1;
    }
  }
  return 0;
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<copy>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x18,%rsp
  mov    %edi,%r12d
  mov    %esi,%ebx
  mov    %fs:0x28,%rax
  mov    %rax,-0x28(%rbp)
  xor    %eax,%eax
  call   <getpagesize@plt>
  mov    %rax,%rdx
  lea    0xf(%rax),%rcx
  mov    %rcx,%rsi
  and    $0xfffffffffffffff0,%rsi
  and    $0xfffffffffffff000,%rcx
  mov    %rsp,%rax
  sub    %rcx,%rax
L16:
  cmp    %rax,%rsp
  je     L37
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L16
L37:
  mov    %rsi,%rax
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  je     L40
  orq    $0x0,-0x8(%rsp,%rax,1)
L40:
  mov    %rsp,%r13
  mov    %rsp,%rsi
  mov    %r12d,%edi
  call   <read@plt>
  mov    %eax,%edx
  test   %eax,%eax
  js     L3
  mov    $0x0,%eax
  jle    L24
  mov    %r13,%rsi
  mov    %ebx,%edi
  call   <write@plt>
  sar    $0x3f,%rax
L24:
  mov    -0x28(%rbp),%rdx
  sub    %fs:0x28,%rdx
  jne    L42
  lea    -0x18(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %rbp
  ret
L3:
  mov    D9(%rip),%rdx
  mov    D3(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,(%rdx)
  setne  %al
  movzbl %al,%eax
  neg    %eax
  jmp    L24
L42:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int copy(int from, int to) {
  size_t bsize = getpagesize();
  char buf[bsize];
  int nread = read(from, buf, bsize);
  if (nread < 0 && errno != EAGAIN) {
    return -1;
  }
  if (nread > 0) {
    if (write(to, buf, nread) < 0) {
      return -1;
    }
  }
  return 0;
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<copy>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r13
  mov    %edi,%r13d
  push   %r12
  mov    %esi,%r12d
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x18(%rbp)
  xor    %eax,%eax
  call   <getpagesize@plt>
  mov    %rsp,%rsi
  lea    0xf(%rax),%rcx
  mov    %rax,%rdx
  mov    %rcx,%rax
  and    $0xfffffffffffff000,%rcx
  sub    %rcx,%rsi
  and    $0xfffffffffffffff0,%rax
  cmp    %rsi,%rsp
  je     L58
L0:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rsi,%rsp
  jne    L0
L58:
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  jne    L82
  mov    %rsp,%rsi
  mov    %r13d,%edi
  call   <read@plt>
  test   %eax,%eax
  js     L2
L83:
  je     L66
  mov    %eax,%edx
  mov    %rsp,%rsi
  mov    %r12d,%edi
  call   <write@plt>
  sar    $0x3f,%rax
L66:
  mov    -0x18(%rbp),%rdx
  sub    %fs:0x28,%rdx
  jne    L50
  lea    -0x10(%rbp),%rsp
  pop    %r12
  pop    %r13
  pop    %rbp
  ret
  nopw   0x0(%rax,%rax,1)
L2:
  mov    D2(%rip),%rdx
  mov    D8(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,(%rdx)
  setne  %al
  movzbl %al,%eax
  neg    %eax
  jmp    L66
  xchg   %ax,%ax
L82:
  orq    $0x0,-0x8(%rsp,%rax,1)
  mov    %rsp,%rsi
  mov    %r13d,%edi
  call   <read@plt>
  test   %eax,%eax
  jns    L83
  jmp    L2
L50:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int copy(int from, int to) {
  size_t bsize = getpagesize();
  char buf[bsize];
  int nread = read(from, buf, bsize);
  if (nread < 0 && errno != EAGAIN) {
    return -1;
  }
  if (nread > 0) {
    if (write(to, buf, nread) < 0) {
      return -1;
    }
  }
  return 0;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<copy>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r13
  mov    %edi,%r13d
  push   %r12
  mov    %esi,%r12d
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x18(%rbp)
  xor    %eax,%eax
  call   <getpagesize@plt>
  mov    %rsp,%rsi
  lea    0xf(%rax),%rcx
  mov    %rax,%rdx
  mov    %rcx,%rax
  and    $0xfffffffffffff000,%rcx
  sub    %rcx,%rsi
  and    $0xfffffffffffffff0,%rax
  cmp    %rsi,%rsp
  je     L48
L36:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rsi,%rsp
  jne    L36
L48:
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  jne    L80
  mov    %rsp,%rsi
  mov    %r13d,%edi
  call   <read@plt>
  test   %eax,%eax
  js     L82
L62:
  je     L83
  mov    %eax,%edx
  mov    %rsp,%rsi
  mov    %r12d,%edi
  call   <write@plt>
  sar    $0x3f,%rax
L83:
  mov    -0x18(%rbp),%rdx
  sub    %fs:0x28,%rdx
  jne    L42
  lea    -0x10(%rbp),%rsp
  pop    %r12
  pop    %r13
  pop    %rbp
  ret
  nopw   0x0(%rax,%rax,1)
L82:
  mov    D7(%rip),%rdx
  mov    D11(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,(%rdx)
  setne  %al
  movzbl %al,%eax
  neg    %eax
  jmp    L83
  xchg   %ax,%ax
L80:
  orq    $0x0,-0x8(%rsp,%rax,1)
  mov    %rsp,%rsi
  mov    %r13d,%edi
  call   <read@plt>
  test   %eax,%eax
  jns    L62
  jmp    L82
L42:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int copy(int from, int to) {
  size_t bsize = getpagesize();
  char buf[bsize];
  int nread = read(from, buf, bsize);
  if (nread < 0 && errno != EAGAIN) {
    return -1;
  }
  if (nread > 0) {
    if (write(to, buf, nread) < 0) {
      return -1;
    }
  }
  return 0;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<_cubic>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  movsd  %xmm0,-0x18(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x10(%rbp)
  movsd  D84(%rip),%xmm0
  movsd  %xmm0,-0x8(%rbp)
  pxor   %xmm0,%xmm0
  comisd -0x18(%rbp),%xmm0
  jbe    L21
  movsd  -0x18(%rbp),%xmm0
  movq   D47(%rip),%xmm1
  xorpd  %xmm1,%xmm0
  movsd  %xmm0,-0x18(%rbp)
L21:
  movsd  D84(%rip),%xmm0
  comisd -0x18(%rbp),%xmm0
  jbe    L19
  movsd  D29(%rip),%xmm0
  subsd  -0x8(%rbp),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  -0x18(%rbp),%xmm1
  movsd  -0x8(%rbp),%xmm0
  movsd  D75(%rip),%xmm2
  subsd  %xmm2,%xmm0
  mulsd  -0x18(%rbp),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  addsd  %xmm0,%xmm1
  movsd  D84(%rip),%xmm0
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x10(%rbp)
  jmp    L35
L19:
  movsd  D29(%rip),%xmm0
  comisd -0x18(%rbp),%xmm0
  jbe    L35
  movsd  -0x8(%rbp),%xmm0
  movq   D47(%rip),%xmm1
  xorpd  %xmm1,%xmm0
  mulsd  -0x18(%rbp),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  -0x18(%rbp),%xmm1
  movsd  -0x8(%rbp),%xmm2
  movsd  D27(%rip),%xmm0
  mulsd  %xmm2,%xmm0
  mulsd  -0x18(%rbp),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  addsd  %xmm1,%xmm0
  movsd  -0x8(%rbp),%xmm2
  movsd  D104(%rip),%xmm1
  mulsd  %xmm2,%xmm1
  movapd %xmm1,%xmm2
  mulsd  -0x18(%rbp),%xmm2
  movapd %xmm0,%xmm1
  subsd  %xmm2,%xmm1
  movsd  -0x8(%rbp),%xmm2
  movsd  D48(%rip),%xmm0
  mulsd  %xmm2,%xmm0
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x10(%rbp)
L35:
  movsd  -0x10(%rbp),%xmm0
  movq   %xmm0,%rax
  movq   %rax,%xmm0
  pop    %rbp
  ret
```

tool_calls: name: retrieve_data
arguments: data_tag: D84
data_type: f64
name: retrieve_data
arguments: data_tag: D47
data_type: f32[2]
name: retrieve_data
arguments: data_tag: D29
data_type: f32[2]
name: retrieve_data
arguments: data_tag: D75
data_type: f32[2]
name: retrieve_data
arguments: data_tag: D27
data_type: f32[2]
name: retrieve_data
arguments: data_tag: D104
data_type: f32[2]
name: retrieve_data
arguments: data_tag: D48
data_type: f32[2]

tool: D84: 1

tool: {"D47": [0.0,-0.0]}

tool: {"D29": [0.0,2.0]}

tool: {"D75": [0.0,2.125]}

tool: {"D27": [0.0,2.3125]}

tool: {"D104": [0.0,2.5]}

tool: {"D48": [0.0,2.25]}

assistant: ```c
double _cubic(double x) {
  double z = 0;
  double a = 1;
  if (x < 0)
    x = -x;
  if (x < 1)
    z = (-a + 2) * x * x * x + (a - 3) * x * x + 1;
  else if (x < 2)
    z = -a * x * x * x + 5 * a * x * x - 8 * a * x + 4 * a;
  return z;
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<_cubic>:
  endbr64
  movapd %xmm0,%xmm1
  pxor   %xmm0,%xmm0
  comisd %xmm1,%xmm0
  ja     L36
L23:
  movsd  D60(%rip),%xmm0
  comisd %xmm1,%xmm0
  ja     L39
  movsd  D7(%rip),%xmm0
  comisd %xmm1,%xmm0
  jbe    L13
  movapd %xmm1,%xmm0
  xorpd  D89(%rip),%xmm0
  mulsd  %xmm1,%xmm0
  mulsd  %xmm1,%xmm0
  movapd %xmm1,%xmm2
  mulsd  D59(%rip),%xmm2
  mulsd  %xmm1,%xmm2
  addsd  %xmm2,%xmm0
  mulsd  D25(%rip),%xmm1
  subsd  %xmm1,%xmm0
  addsd  D53(%rip),%xmm0
  ret
L36:
  xorpd  D89(%rip),%xmm1
  jmp    L23
L39:
  movapd %xmm1,%xmm0
  mulsd  %xmm1,%xmm0
  mulsd  %xmm1,%xmm0
  movapd %xmm1,%xmm2
  mulsd  D14(%rip),%xmm2
  mulsd  %xmm2,%xmm1
  addsd  %xmm1,%xmm0
  addsd  D60(%rip),%xmm0
  ret
L13:
  pxor   %xmm0,%xmm0
  ret
```

tool_calls: name: read_data
arguments: data_label: D60
type: f64
name: read_data
arguments: data_label: D7
type: f32[2]
name: read_data
arguments: data_label: D89
type: f32[4]
name: read_data
arguments: data_label: D59
type: f32[2]
name: read_data
arguments: data_label: D25
type: f32[2]
name: read_data
arguments: data_label: D53
type: f32[2]
name: read_data
arguments: data_label: D14
type: f32[2]

tool: D60: 1

tool: {"D7": [0.0,2.0]}

tool: {"D89": [0.0,-0.0,0.0,0.0]}

tool: {"D59": [0.0,2.3125]}

tool: {"D25": [0.0,2.5]}

tool: {"D53": [0.0,2.25]}

tool: {"D14": [0.0,-2.0]}

assistant: ```c
double _cubic(double x) {
  double z = 0;
  double a = 1;
  if (x < 0)
    x = -x;
  if (x < 1)
    z = (-a + 2) * x * x * x + (a - 3) * x * x + 1;
  else if (x < 2)
    z = -a * x * x * x + 5 * a * x * x - 8 * a * x + 4 * a;
  return z;
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<_cubic>:
  endbr64
  movapd %xmm0,%xmm1
  pxor   %xmm0,%xmm0
  comisd %xmm1,%xmm0
  jbe    L20
  xorpd  D2(%rip),%xmm1
L20:
  movsd  D27(%rip),%xmm2
  comisd %xmm1,%xmm2
  ja     L3
  movsd  D58(%rip),%xmm2
  comisd %xmm1,%xmm2
  jbe    L17
  movapd %xmm1,%xmm0
  movsd  D43(%rip),%xmm2
  xorpd  D2(%rip),%xmm0
  mulsd  %xmm1,%xmm2
  mulsd  %xmm1,%xmm0
  mulsd  %xmm1,%xmm2
  mulsd  %xmm1,%xmm0
  mulsd  D79(%rip),%xmm1
  addsd  %xmm2,%xmm0
  subsd  %xmm1,%xmm0
  addsd  D73(%rip),%xmm0
L17:
  ret
  nopl   0x0(%rax,%rax,1)
L3:
  movsd  D24(%rip),%xmm3
  movapd %xmm1,%xmm0
  mulsd  %xmm1,%xmm0
  mulsd  %xmm1,%xmm3
  mulsd  %xmm1,%xmm0
  mulsd  %xmm3,%xmm1
  addsd  %xmm1,%xmm0
  addsd  %xmm2,%xmm0
  ret
```

tool_calls: name: retrieve_data
arguments: data_tag: D2
type: f32[4]
name: retrieve_data
arguments: data_tag: D27
type: f64
name: retrieve_data
arguments: data_tag: D58
type: f32[2]
name: retrieve_data
arguments: data_tag: D43
type: f32[2]
name: retrieve_data
arguments: data_tag: D79
type: f32[2]
name: retrieve_data
arguments: data_tag: D73
type: f32[2]
name: retrieve_data
arguments: data_tag: D24
type: f32[2]

tool: {"D2": [0.0,-0.0,0.0,0.0]}

tool: D27: 1

tool: {"D58": [0.0,2.0]}

tool: {"D43": [0.0,2.3125]}

tool: {"D79": [0.0,2.5]}

tool: {"D73": [0.0,2.25]}

tool: {"D24": [0.0,-2.0]}

assistant: ```c
double _cubic(double x) {
  double z = 0;
  double a = 1;
  if (x < 0)
    x = -x;
  if (x < 1)
    z = (-a + 2) * x * x * x + (a - 3) * x * x + 1;
  else if (x < 2)
    z = -a * x * x * x + 5 * a * x * x - 8 * a * x + 4 * a;
  return z;
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<_cubic>:
  endbr64
  movapd %xmm0,%xmm1
  pxor   %xmm0,%xmm0
  comisd %xmm1,%xmm0
  jbe    L1
  xorpd  D69(%rip),%xmm1
L1:
  movsd  D17(%rip),%xmm2
  comisd %xmm1,%xmm2
  ja     L12
  movsd  D31(%rip),%xmm2
  comisd %xmm1,%xmm2
  jbe    L0
  movapd %xmm1,%xmm0
  movsd  D75(%rip),%xmm2
  xorpd  D69(%rip),%xmm0
  mulsd  %xmm1,%xmm2
  mulsd  %xmm1,%xmm0
  mulsd  %xmm1,%xmm2
  mulsd  %xmm1,%xmm0
  mulsd  D24(%rip),%xmm1
  addsd  %xmm2,%xmm0
  subsd  %xmm1,%xmm0
  addsd  D26(%rip),%xmm0
L0:
  ret
  nopl   0x0(%rax,%rax,1)
L12:
  movsd  D38(%rip),%xmm3
  movapd %xmm1,%xmm0
  mulsd  %xmm1,%xmm0
  mulsd  %xmm1,%xmm3
  mulsd  %xmm1,%xmm0
  mulsd  %xmm3,%xmm1
  addsd  %xmm1,%xmm0
  addsd  %xmm2,%xmm0
  ret
```

tool_calls: name: disassemble_data
arguments: data_tag: D69
type: f32[4]
name: disassemble_data
arguments: data_tag: D17
type: f64
name: disassemble_data
arguments: data_tag: D31
type: f32[2]
name: disassemble_data
arguments: data_tag: D75
type: f32[2]
name: disassemble_data
arguments: data_tag: D24
type: f32[2]
name: disassemble_data
arguments: data_tag: D26
type: f32[2]
name: disassemble_data
arguments: data_tag: D38
type: f32[2]

tool: {"D69": [0.0,-0.0,0.0,0.0]}

tool: D17: 1

tool: {"D31": [0.0,2.0]}

tool: {"D75": [0.0,2.3125]}

tool: {"D24": [0.0,2.5]}

tool: {"D26": [0.0,2.25]}

tool: {"D38": [0.0,-2.0]}

assistant: ```c
double _cubic(double x) {
  double z = 0;
  double a = 1;
  if (x < 0)
    x = -x;
  if (x < 1)
    z = (-a + 2) * x * x * x + (a - 3) * x * x + 1;
  else if (x < 2)
    z = -a * x * x * x + 5 * a * x * x - 8 * a * x + 4 * a;
  return z;
}
```