ylfeng/ReF-Decompile-dataset huggingface dataset:
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0xfd0,%rsp
  mov    %edi,-0x1fc4(%rbp)
  mov    %rsi,-0x1fd0(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movss  D35(%rip),%xmm0
  movss  %xmm0,-0x1fb0(%rbp)
  movss  D50(%rip),%xmm0
  movss  %xmm0,-0x1fac(%rbp)
  movss  D68(%rip),%xmm0
  movss  %xmm0,-0x1fa8(%rbp)
  movss  D40(%rip),%xmm0
  movss  %xmm0,-0x1fa4(%rbp)
  movss  D24(%rip),%xmm0
  movss  %xmm0,-0x1fa0(%rbp)
  lea    -0x1f90(%rbp),%rcx
  lea    -0x1fb0(%rbp),%rax
  mov    $0x5,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <psum1a@plt>
  movss  -0x1f80(%rbp),%xmm0
  ucomiss D84(%rip),%xmm0
  setnp  %al
  mov    $0x0,%edx
  ucomiss D84(%rip),%xmm0
  cmovne %edx,%eax
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    -0x1f70(%rbp),%rcx
  lea    -0x1fb0(%rbp),%rax
  mov    $0x5,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <psum_4_1a@plt>
  movss  -0x1f60(%rbp),%xmm0
  ucomiss D84(%rip),%xmm0
  setnp  %al
  mov    $0x0,%edx
  ucomiss D84(%rip),%xmm0
  cmovne %edx,%eax
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  movl   $0x0,-0x1fb4(%rbp)
  jmp    L18
L20:
  lea    -0xfb0(%rbp),%rcx
  lea    -0x1f50(%rbp),%rax
  mov    $0x3e8,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <psum1a@plt>
  lea    -0xfb0(%rbp),%rcx
  lea    -0x1f50(%rbp),%rax
  mov    $0x3e8,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <psum_4_1a@plt>
  addl   $0x1,-0x1fb4(%rbp)
L18:
  cmpl   $0x3e7,-0x1fb4(%rbp)
  jle    L20
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L6
  call   <__stack_chk_fail@plt>
L6:
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D35
datatype: byte[4]
name: extract_symbolic_data
arguments: data_tag: D50
datatype: byte[4]
name: extract_symbolic_data
arguments: data_tag: D68
datatype: byte[4]
name: extract_symbolic_data
arguments: data_tag: D40
datatype: byte[4]
name: extract_symbolic_data
arguments: data_tag: D24
datatype: byte[4]
name: extract_symbolic_data
arguments: data_tag: D84
datatype: byte[4]

tool: {"D35": [0x00,0x00,0x80,0x3f]}

tool: {"D50": [0x00,0x00,0x00,0x40]}

tool: {"D68": [0x00,0x00,0x40,0x40]}

tool: {"D40": [0x00,0x00,0x80,0x40]}

tool: {"D24": [0x00,0x00,0xa0,0x40]}

tool: {"D84": [0x00,0x00,0x70,0x41]}

assistant: ```c
int main(int argc, char *argv[]) {
  float a[5] = {1, 2, 3, 4, 5};
  float p[5];
  psum1a(a, p, 5);
  assert(p[4] == 15);
  float q[5];
  psum_4_1a(a, q, 5);
  assert(q[4] == 15);
  for (int i = 0; i < 1000; i++) {
    float s[1000];
    float d[1000];
    psum1a(s, d, 1000);
    psum_4_1a(s, d, 1000);
  }
  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
<main>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0xfb0,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x1fa8(%rsp)
  xor    %eax,%eax
  movl   $0x3f800000,(%rsp)
  movl   $0x40000000,0x4(%rsp)
  movl   $0x40400000,0x8(%rsp)
  movl   $0x40800000,0xc(%rsp)
  movl   $0x40a00000,0x10(%rsp)
  lea    0x20(%rsp),%rsi
  mov    %rsp,%rbp
  mov    $0x5,%edx
  mov    %rbp,%rdi
  call   <psum1a@plt>
  movss  0x30(%rsp),%xmm0
  ucomiss D14(%rip),%xmm0
  setnp  %dil
  movzbl %dil,%edi
  mov    $0x0,%ebx
  cmovne %ebx,%edi
  call   <assert@plt>
  lea    0x40(%rsp),%rsi
  mov    $0x5,%edx
  mov    %rbp,%rdi
  call   <psum_4_1a@plt>
  movss  0x50(%rsp),%xmm0
  ucomiss D14(%rip),%xmm0
  setnp  %dil
  movzbl %dil,%edi
  cmovne %ebx,%edi
  call   <assert@plt>
  mov    $0x3e8,%ebx
  lea    0x1000(%rsp),%r12
L14:
  lea    0x60(%rsp),%rbp
  mov    $0x3e8,%edx
  mov    %r12,%rsi
  mov    %rbp,%rdi
  call   <psum1a@plt>
  mov    $0x3e8,%edx
  mov    %r12,%rsi
  mov    %rbp,%rdi
  call   <psum_4_1a@plt>
  sub    $0x1,%ebx
  jne    L14
  mov    0x1fa8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L9
  mov    $0x0,%eax
  add    $0x1fb0,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L9:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: data_label: D14
type: byte[4]

tool: {"D14": [0x00,0x00,0x70,0x41]}

assistant: ```c
int main(int argc, char *argv[]) {
  float a[5] = {1, 2, 3, 4, 5};
  float p[5];
  psum1a(a, p, 5);
  assert(p[4] == 15);
  float q[5];
  psum_4_1a(a, q, 5);
  assert(q[4] == 15);
  for (int i = 0; i < 1000; i++) {
    float s[1000];
    float d[1000];
    psum1a(s, d, 1000);
    psum_4_1a(s, d, 1000);
  }
  return 0;
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<main>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0xfb0,%rsp
  mov    $0x5,%edx
  mov    $0x0,%ebx
  mov    %fs:0x28,%rax
  mov    %rax,0x1fa8(%rsp)
  movabs $0x400000003f800000,%rax
  mov    %rsp,%rbp
  lea    0x20(%rsp),%rsi
  movl   $0x40a00000,0x10(%rsp)
  mov    %rbp,%rdi
  lea    0x1000(%rsp),%r12
  mov    %rax,(%rsp)
  movabs $0x4080000040400000,%rax
  mov    %rax,0x8(%rsp)
  call   <psum1a@plt>
  movss  0x30(%rsp),%xmm0
  xor    %edi,%edi
  ucomiss D10(%rip),%xmm0
  setnp  %dil
  cmovne %ebx,%edi
  call   <assert@plt>
  mov    %rbp,%rdi
  lea    0x40(%rsp),%rsi
  mov    $0x5,%edx
  call   <psum_4_1a@plt>
  movss  0x50(%rsp),%xmm0
  xor    %edi,%edi
  ucomiss D10(%rip),%xmm0
  lea    0x60(%rsp),%rbp
  setnp  %dil
  cmovne %ebx,%edi
  mov    $0x3e8,%ebx
  call   <assert@plt>
  nopl   (%rax)
L17:
  mov    $0x3e8,%edx
  mov    %r12,%rsi
  mov    %rbp,%rdi
  call   <psum1a@plt>
  mov    $0x3e8,%edx
  mov    %r12,%rsi
  mov    %rbp,%rdi
  call   <psum_4_1a@plt>
  sub    $0x1,%ebx
  jne    L17
  mov    0x1fa8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L14
  add    $0x1fb0,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L14:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: data_label: D10
datatype: byte[4]

tool: {"D10": [0x00,0x00,0x70,0x41]}

assistant: ```c
int main(int argc, char *argv[]) {
  float a[5] = {1, 2, 3, 4, 5};
  float p[5];
  psum1a(a, p, 5);
  assert(p[4] == 15);
  float q[5];
  psum_4_1a(a, q, 5);
  assert(q[4] == 15);
  for (int i = 0; i < 1000; i++) {
    float s[1000];
    float d[1000];
    psum1a(s, d, 1000);
    psum_4_1a(s, d, 1000);
  }
  return 0;
}
```
user: Translate the below assembly code into C programming language:

```asm
<main>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0xfb0,%rsp
  movaps D17(%rip),%xmm0
  mov    $0x5,%edx
  mov    $0x0,%ebx
  mov    %rsp,%rbp
  lea    0x20(%rsp),%rsi
  lea    0x1000(%rsp),%r12
  mov    %fs:0x28,%rax
  mov    %rax,0x1fa8(%rsp)
  xor    %eax,%eax
  mov    %rbp,%rdi
  movaps %xmm0,(%rsp)
  movl   $0x40a00000,0x10(%rsp)
  call   <psum1a@plt>
  movss  0x30(%rsp),%xmm0
  xor    %edi,%edi
  ucomiss D21(%rip),%xmm0
  setnp  %dil
  cmovne %ebx,%edi
  call   <assert@plt>
  mov    %rbp,%rdi
  lea    0x40(%rsp),%rsi
  mov    $0x5,%edx
  call   <psum_4_1a@plt>
  movss  0x50(%rsp),%xmm0
  xor    %edi,%edi
  ucomiss D21(%rip),%xmm0
  lea    0x60(%rsp),%rbp
  setnp  %dil
  cmovne %ebx,%edi
  mov    $0x3e8,%ebx
  call   <assert@plt>
  nopl   (%rax)
L3:
  mov    $0x3e8,%edx
  mov    %r12,%rsi
  mov    %rbp,%rdi
  call   <psum1a@plt>
  mov    $0x3e8,%edx
  mov    %r12,%rsi
  mov    %rbp,%rdi
  call   <psum_4_1a@plt>
  sub    $0x1,%ebx
  jne    L3
  mov    0x1fa8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L10
  add    $0x1fb0,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L10:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: data_label: D17
type_guessed: byte[16]
name: disassemble_data
arguments: data_label: D21
type_guessed: byte[4]

tool: {"D17": [0x00,0x00,0x80,0x3f,0x00,0x00,0x00,0x40,0x00,0x00,0x40,0x40,0x00,0x00,0x80,0x40]}

tool: {"D21": [0x00,0x00,0x70,0x41]}

assistant: ```c
int main(int argc, char *argv[]) {
  float a[5] = {1, 2, 3, 4, 5};
  float p[5];
  psum1a(a, p, 5);
  assert(p[4] == 15);
  float q[5];
  psum_4_1a(a, q, 5);
  assert(q[4] == 15);
  for (int i = 0; i < 1000; i++) {
    float s[1000];
    float d[1000];
    psum1a(s, d, 1000);
    psum_4_1a(s, d, 1000);
  }
  return 0;
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<init_first_row>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %edi,-0x24(%rbp)
  mov    %esi,-0x28(%rbp)
  mov    %rdx,-0x30(%rbp)
  mov    %rcx,-0x38(%rbp)
  mov    %r8,-0x40(%rbp)
  mov    -0x28(%rbp),%eax
  cltq
  sub    $0x1,%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x28(%rbp),%eax
  cltq
  mov    %rax,%r10
  mov    $0x0,%r11d
  mov    -0x38(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%edx
  mov    -0x40(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <strchr@plt>
  mov    %rax,-0x8(%rbp)
  cmpq   $0x0,-0x8(%rbp)
  je     L5
  mov    -0x8(%rbp),%rax
  sub    -0x40(%rbp),%rax
  mov    %eax,-0x14(%rbp)
  jmp    L9
L19:
  mov    -0x30(%rbp),%rax
  mov    -0x14(%rbp),%edx
  movslq %edx,%rdx
  movl   $0x1,(%rax,%rdx,4)
  addl   $0x1,-0x14(%rbp)
L9:
  mov    -0x14(%rbp),%eax
  cmp    -0x28(%rbp),%eax
  jl     L19
  nop
L5:
  nop
  leave
  ret
```

assistant: ```c
void init_first_row(const int ROWS, const int COLS, int table[ROWS][COLS], const char *X, const char *Y) {
  char *match = strchr(Y, X[0]);
  if (match) {
    int pos = match - Y;
    for (; pos < COLS; pos++) {
      table[0][pos] = 1;
    }
  }
  return;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<init_first_row>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %esi,%ebx
  mov    %rdx,%rbp
  mov    %r8,%r12
  movsbl (%rcx),%esi
  mov    %r8,%rdi
  call   <strchr@plt>
  test   %rax,%rax
  je     L19
  sub    %r12,%rax
  cmp    %eax,%ebx
  jle    L19
  movslq %eax,%rcx
  lea    0x0(%rbp,%rcx,4),%rdx
  sub    $0x1,%ebx
  sub    %eax,%ebx
  add    %rcx,%rbx
  lea    0x4(%rbp,%rbx,4),%rax
L0:
  movl   $0x1,(%rdx)
  add    $0x4,%rdx
  cmp    %rax,%rdx
  jne    L0
L19:
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
void init_first_row(const int ROWS, const int COLS, int table[ROWS][COLS], const char *X, const char *Y) {
  char *match = strchr(Y, X[0]);
  if (match) {
    int pos = match - Y;
    for (; pos < COLS; pos++) {
      table[0][pos] = 1;
    }
  }
  return;
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<init_first_row>:
  endbr64
  push   %r12
  mov    %r8,%rdi
  mov    %rdx,%r12
  push   %rbp
  mov    %r8,%rbp
  push   %rbx
  mov    %esi,%ebx
  movsbl (%rcx),%esi
  call   <strchr@plt>
  test   %rax,%rax
  je     L2
  sub    %rbp,%rax
  cmp    %eax,%ebx
  jle    L2
  sub    $0x1,%ebx
  movslq %eax,%rcx
  sub    %eax,%ebx
  lea    (%r12,%rcx,4),%rdx
  add    %rcx,%rbx
  lea    0x4(%r12,%rbx,4),%rax
  nopl   0x0(%rax,%rax,1)
L5:
  movl   $0x1,(%rdx)
  add    $0x4,%rdx
  cmp    %rax,%rdx
  jne    L5
L2:
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
void init_first_row(const int ROWS, const int COLS, int table[ROWS][COLS], const char *X, const char *Y) {
  char *match = strchr(Y, X[0]);
  if (match) {
    int pos = match - Y;
    for (; pos < COLS; pos++) {
      table[0][pos] = 1;
    }
  }
  return;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<init_first_row>:
  endbr64
  push   %r12
  mov    %r8,%rdi
  mov    %r8,%r12
  push   %rbp
  mov    %rdx,%rbp
  push   %rbx
  mov    %esi,%ebx
  movsbl (%rcx),%esi
  call   <strchr@plt>
  test   %rax,%rax
  je     L39
  sub    %r12,%rax
  mov    %eax,%edx
  cmp    %eax,%ebx
  jle    L39
  mov    %ebx,%edi
  sub    %eax,%edi
  lea    -0x1(%rdi),%ecx
  cmp    $0x2,%ecx
  jbe    L56
  movslq %eax,%rdx
  movdqa D7(%rip),%xmm0
  lea    0x0(%rbp,%rdx,4),%rcx
  mov    %edi,%edx
  shr    $0x2,%edx
  lea    -0x1(%rdx),%esi
  lea    0x10(%rcx),%rdx
  shl    $0x4,%rsi
  add    %rdx,%rsi
  jmp    L22
  xchg   %ax,%ax
L61:
  add    $0x10,%rdx
L22:
  movups %xmm0,(%rcx)
  mov    %rdx,%rcx
  cmp    %rsi,%rdx
  jne    L61
  mov    %edi,%ecx
  and    $0xfffffffc,%ecx
  lea    (%rcx,%rax,1),%edx
  cmp    %ecx,%edi
  je     L39
L56:
  movslq %edx,%rax
  lea    0x1(%rdx),%ecx
  lea    0x0(%rbp,%rax,4),%rax
  movl   $0x1,(%rax)
  cmp    %ebx,%ecx
  jge    L39
  add    $0x2,%edx
  movl   $0x1,0x4(%rax)
  cmp    %edx,%ebx
  jle    L39
  movl   $0x1,0x8(%rax)
L39:
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

tool_calls: name: unpack_data
arguments: tag: D7
datatype: byte[16]

tool: {"D7": [0x01,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x01,0x00,0x00,0x00]}

assistant: ```c
void init_first_row(const int ROWS, const int COLS, int table[ROWS][COLS], const char *X, const char *Y) {
  char *match = strchr(Y, X[0]);
  if (match) {
    int pos = match - Y;
    for (; pos < COLS; pos++) {
      table[0][pos] = 1;
    }
  }
  return;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<memcmp>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %edx,-0x34(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x30(%rbp),%rax
  mov    %rax,-0x8(%rbp)
  jmp    L5
L31:
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%ecx
  mov    %edx,%eax
  sub    %ecx,%eax
  mov    %eax,-0x14(%rbp)
  cmpl   $0x0,-0x14(%rbp)
  je     L24
  mov    -0x14(%rbp),%eax
  jmp    L6
L24:
  addq   $0x1,-0x10(%rbp)
  addq   $0x1,-0x8(%rbp)
  subl   $0x1,-0x34(%rbp)
L5:
  cmpl   $0x0,-0x34(%rbp)
  jne    L31
  mov    $0x0,%eax
L6:
  pop    %rbp
  ret
```

assistant: ```c
int memcmp(const void *ptr1, const void *ptr2, unsigned int num) {
  const unsigned char *ptr1_cpy = (const unsigned char *)ptr1;
  const unsigned char *ptr2_cpy = (const unsigned char *)ptr2;
  while (num) {
    int diff = (int)*ptr1_cpy - (int)*ptr2_cpy;
    if (diff != 0) {
      return diff;
    }
    ptr1_cpy++;
    ptr2_cpy++;
    --num;
  }
  return 0;
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<memcmp>:
  endbr64
  test   %edx,%edx
  je     L29
  mov    %edx,%edx
  mov    $0x0,%ecx
L16:
  movzbl (%rdi,%rcx,1),%eax
  movzbl (%rsi,%rcx,1),%r8d
  sub    %r8d,%eax
  jne    L17
  add    $0x1,%rcx
  cmp    %rdx,%rcx
  jne    L16
  ret
L29:
  mov    $0x0,%eax
L17:
  ret
```

assistant: ```c
int memcmp(const void *ptr1, const void *ptr2, unsigned int num) {
  const unsigned char *ptr1_cpy = (const unsigned char *)ptr1;
  const unsigned char *ptr2_cpy = (const unsigned char *)ptr2;
  while (num) {
    int diff = (int)*ptr1_cpy - (int)*ptr2_cpy;
    if (diff != 0) {
      return diff;
    }
    ptr1_cpy++;
    ptr2_cpy++;
    --num;
  }
  return 0;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<memcmp>:
  endbr64
  test   %edx,%edx
  je     L26
  mov    %edx,%edx
  xor    %ecx,%ecx
  jmp    L30
  xchg   %ax,%ax
L24:
  add    $0x1,%rcx
  cmp    %rcx,%rdx
  je     L12
L30:
  movzbl (%rdi,%rcx,1),%eax
  movzbl (%rsi,%rcx,1),%r8d
  sub    %r8d,%eax
  je     L24
  ret
  nopl   0x0(%rax,%rax,1)
L12:
  ret
L26:
  xor    %eax,%eax
  ret
```

assistant: ```c
int memcmp(const void *ptr1, const void *ptr2, unsigned int num) {
  const unsigned char *ptr1_cpy = (const unsigned char *)ptr1;
  const unsigned char *ptr2_cpy = (const unsigned char *)ptr2;
  while (num) {
    int diff = (int)*ptr1_cpy - (int)*ptr2_cpy;
    if (diff != 0) {
      return diff;
    }
    ptr1_cpy++;
    ptr2_cpy++;
    --num;
  }
  return 0;
}
```
user: 请将以下的汇编代码转换成C语言代码：

```asm
<memcmp>:
  endbr64
  test   %edx,%edx
  je     L0
  mov    %edx,%edx
  xor    %ecx,%ecx
  jmp    L37
  xchg   %ax,%ax
L39:
  add    $0x1,%rcx
  cmp    %rcx,%rdx
  je     L15
L37:
  movzbl (%rdi,%rcx,1),%eax
  movzbl (%rsi,%rcx,1),%r8d
  sub    %r8d,%eax
  je     L39
  ret
  nopl   0x0(%rax,%rax,1)
L15:
  ret
L0:
  xor    %eax,%eax
  ret
```

assistant: ```c
int memcmp(const void *ptr1, const void *ptr2, unsigned int num) {
  const unsigned char *ptr1_cpy = (const unsigned char *)ptr1;
  const unsigned char *ptr2_cpy = (const unsigned char *)ptr2;
  while (num) {
    int diff = (int)*ptr1_cpy - (int)*ptr2_cpy;
    if (diff != 0) {
      return diff;
    }
    ptr1_cpy++;
    ptr2_cpy++;
    --num;
  }
  return 0;
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<str_find_right>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %rdx,-0x38(%rbp)
  mov    %ecx,-0x3c(%rbp)
  mov    -0x28(%rbp),%rax
  cmp    -0x30(%rbp),%rax
  ja     L41
  cmpl   $0x0,-0x3c(%rbp)
  jg     L49
L41:
  mov    $0x0,%eax
  jmp    L0
L49:
  subl   $0x1,-0x3c(%rbp)
  mov    -0x3c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
  movq   $0x0,-0x18(%rbp)
  movq   $0x0,-0x10(%rbp)
  jmp    L30
L103:
  mov    -0x3c(%rbp),%eax
  neg    %eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%edx
  mov    -0x3c(%rbp),%eax
  neg    %eax
  movslq %eax,%rcx
  mov    -0x8(%rbp),%rax
  add    %rcx,%rax
  movzbl (%rax),%eax
  cmp    %al,%dl
  jne    L56
  mov    -0x8(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x30(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  jmp    L3
L57:
  subq   $0x1,-0x18(%rbp)
  subq   $0x1,-0x10(%rbp)
L3:
  mov    -0x18(%rbp),%rax
  cmp    -0x38(%rbp),%rax
  jbe    L107
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%edx
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%eax
  cmp    %al,%dl
  je     L57
L107:
  mov    -0x8(%rbp),%rax
  sub    -0x18(%rbp),%rax
  mov    %rax,%rdx
  mov    -0x3c(%rbp),%eax
  cltq
  cmp    %rax,%rdx
  jne    L56
  mov    -0x10(%rbp),%rax
  jmp    L0
L56:
  subq   $0x1,-0x30(%rbp)
L30:
  mov    -0x30(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  je     L102
  mov    -0x30(%rbp),%rax
  sub    -0x28(%rbp),%rax
  mov    %rax,%rdx
  mov    -0x3c(%rbp),%eax
  cltq
  cmp    %rax,%rdx
  jge    L103
L102:
  mov    $0x0,%eax
L0:
  pop    %rbp
  ret
```

assistant: ```c
char *str_find_right(const char *str, const char *last, const char *substr, int sublen) {
  if (str > last || sublen <= 0)
    return NULL;
  sublen--;
  const char *sub = substr + sublen;
  const char *bsub = NULL, *blast = NULL;
  for (; *last && (last - str) >= sublen; last--) {
    if (last[-sublen] == sub[-sublen]) {
      for (bsub = sub, blast = last; bsub > substr && *bsub == *blast; bsub--, blast--)
        ;
      if (sub - bsub == sublen)
        return (char *)blast;
    }
  }
  return NULL;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<str_find_right>:
  endbr64
  mov    %rdi,%r9
  cmp    %rsi,%rdi
  ja     L155
  mov    %rdx,%rdi
  test   %ecx,%ecx
  jle    L155
  lea    -0x1(%rcx),%r8d
  movslq %r8d,%r11
  add    %rdx,%r11
  cmpb   $0x0,(%rsi)
  je     L112
  movslq %r8d,%r8
  mov    %rsi,%rax
  sub    %r9,%rax
  cmp    %r8,%rax
  jl     L179
  mov    $0x1,%eax
  sub    %ecx,%eax
  movslq %eax,%rcx
  movzbl (%r11,%rcx,1),%r10d
  jmp    L107
L147:
  mov    $0x0,%edx
  jmp    L186
L155:
  mov    $0x0,%edx
  jmp    L169
L112:
  mov    $0x0,%edx
  jmp    L169
L179:
  mov    $0x0,%edx
  jmp    L169
L91:
  mov    $0x0,%edx
L186:
  mov    %rdx,%rax
  pop    %rbx
  ret
L49:
  sub    $0x1,%rsi
  cmpb   $0x0,(%rsi)
  je     L165
  mov    %rsi,%rax
  sub    %r9,%rax
  cmp    %r8,%rax
  jl     L19
L107:
  cmp    %r10b,(%rsi,%rcx,1)
  jne    L49
  push   %rbx
L194:
  mov    %rsi,%rdx
  mov    %r11,%rax
  cmp    %r11,%rdi
  jae    L43
L64:
  movzbl (%rdx),%ebx
  cmp    %bl,(%rax)
  jne    L43
  sub    $0x1,%rax
  sub    $0x1,%rdx
  cmp    %rax,%rdi
  jne    L64
  mov    %rdi,%rax
L43:
  mov    %r11,%rbx
  sub    %rax,%rbx
  cmp    %r8,%rbx
  je     L186
L131:
  sub    $0x1,%rsi
  cmpb   $0x0,(%rsi)
  je     L91
  mov    %rsi,%rax
  sub    %r9,%rax
  cmp    %r8,%rax
  jl     L147
  cmp    %r10b,(%rsi,%rcx,1)
  jne    L131
  jmp    L194
L19:
  mov    $0x0,%edx
  jmp    L169
L165:
  mov    $0x0,%edx
L169:
  mov    %rdx,%rax
  ret
```

assistant: ```c
char *str_find_right(const char *str, const char *last, const char *substr, int sublen) {
  if (str > last || sublen <= 0)
    return NULL;
  sublen--;
  const char *sub = substr + sublen;
  const char *bsub = NULL, *blast = NULL;
  for (; *last && (last - str) >= sublen; last--) {
    if (last[-sublen] == sub[-sublen]) {
      for (bsub = sub, blast = last; bsub > substr && *bsub == *blast; bsub--, blast--)
        ;
      if (sub - bsub == sublen)
        return (char *)blast;
    }
  }
  return NULL;
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<str_find_right>:
  endbr64
  mov    %rsi,%rax
  cmp    %rsi,%rdi
  ja     L113
  test   %ecx,%ecx
  jle    L113
  mov    %rdi,%r9
  lea    -0x1(%rcx),%edi
  cmpb   $0x0,(%rax)
  mov    %rdx,%rsi
  movslq %edi,%rdi
  lea    (%rdx,%rdi,1),%r11
  je     L113
  mov    %rax,%rdx
  sub    %r9,%rdx
  cmp    %rdi,%rdx
  jl     L113
  mov    $0x1,%edx
  push   %rbp
  mov    %r11,%rbp
  sub    %ecx,%edx
  push   %rbx
  sub    %rsi,%rbp
  movslq %edx,%rcx
  movzbl (%r11,%rcx,1),%r10d
  jmp    L133
  nopl   0x0(%rax)
L94:
  sub    $0x1,%rax
  cmpb   $0x0,(%rax)
  je     L103
  mov    %rax,%rdx
  sub    %r9,%rdx
  cmp    %rdi,%rdx
  jl     L103
L133:
  cmp    %r10b,(%rax,%rcx,1)
  jne    L94
  mov    %rax,%r8
  mov    %r11,%rdx
  xor    %ebx,%ebx
  cmp    %r11,%rsi
  jb     L41
  jmp    L123
  nopl   0x0(%rax)
L87:
  sub    $0x1,%rdx
  sub    $0x1,%r8
  cmp    %rdx,%rsi
  je     L86
L41:
  movzbl (%r8),%ebx
  cmp    %bl,(%rdx)
  je     L87
  mov    %r11,%rbx
  sub    %rdx,%rbx
L123:
  cmp    %rdi,%rbx
  jne    L94
  mov    %r8,%rax
  pop    %rbx
  pop    %rbp
  ret
  cs nopw 0x0(%rax,%rax,1)
L86:
  mov    %rbp,%rbx
  jmp    L123
  nopl   (%rax)
L103:
  xor    %r8d,%r8d
  pop    %rbx
  pop    %rbp
  mov    %r8,%rax
  ret
  nopl   0x0(%rax)
L113:
  xor    %r8d,%r8d
  mov    %r8,%rax
  ret
```

assistant: ```c
char *str_find_right(const char *str, const char *last, const char *substr, int sublen) {
  if (str > last || sublen <= 0)
    return NULL;
  sublen--;
  const char *sub = substr + sublen;
  const char *bsub = NULL, *blast = NULL;
  for (; *last && (last - str) >= sublen; last--) {
    if (last[-sublen] == sub[-sublen]) {
      for (bsub = sub, blast = last; bsub > substr && *bsub == *blast; bsub--, blast--)
        ;
      if (sub - bsub == sublen)
        return (char *)blast;
    }
  }
  return NULL;
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<str_find_right>:
  endbr64
  mov    %rsi,%rax
  cmp    %rsi,%rdi
  ja     L133
  test   %ecx,%ecx
  jle    L133
  mov    %rdi,%r9
  lea    -0x1(%rcx),%edi
  cmpb   $0x0,(%rax)
  mov    %rdx,%rsi
  movslq %edi,%rdi
  lea    (%rdx,%rdi,1),%r11
  je     L133
  mov    %rax,%rdx
  sub    %r9,%rdx
  cmp    %rdi,%rdx
  jl     L133
  mov    $0x1,%edx
  push   %rbp
  mov    %r11,%rbp
  sub    %ecx,%edx
  push   %rbx
  sub    %rsi,%rbp
  movslq %edx,%rcx
  movzbl (%r11,%rcx,1),%r10d
  jmp    L132
  nopl   0x0(%rax)
L84:
  sub    $0x1,%rax
  cmpb   $0x0,(%rax)
  je     L98
  mov    %rax,%rdx
  sub    %r9,%rdx
  cmp    %rdi,%rdx
  jl     L98
L132:
  cmp    %r10b,(%rax,%rcx,1)
  jne    L84
  mov    %rax,%r8
  mov    %r11,%rdx
  xor    %ebx,%ebx
  cmp    %r11,%rsi
  jb     L17
  jmp    L66
  nopl   0x0(%rax)
L97:
  sub    $0x1,%rdx
  sub    $0x1,%r8
  cmp    %rdx,%rsi
  je     L9
L17:
  movzbl (%r8),%ebx
  cmp    %bl,(%rdx)
  je     L97
  mov    %r11,%rbx
  sub    %rdx,%rbx
L66:
  cmp    %rbx,%rdi
  jne    L84
  mov    %r8,%rax
  pop    %rbx
  pop    %rbp
  ret
  cs nopw 0x0(%rax,%rax,1)
L9:
  mov    %rbp,%rbx
  jmp    L66
  nopl   (%rax)
L98:
  xor    %r8d,%r8d
  pop    %rbx
  pop    %rbp
  mov    %r8,%rax
  ret
  nopl   0x0(%rax)
L133:
  xor    %r8d,%r8d
  mov    %r8,%rax
  ret
```

assistant: ```c
char *str_find_right(const char *str, const char *last, const char *substr, int sublen) {
  if (str > last || sublen <= 0)
    return NULL;
  sublen--;
  const char *sub = substr + sublen;
  const char *bsub = NULL, *blast = NULL;
  for (; *last && (last - str) >= sublen; last--) {
    if (last[-sublen] == sub[-sublen]) {
      for (bsub = sub, blast = last; bsub > substr && *bsub == *blast; bsub--, blast--)
        ;
      if (sub - bsub == sublen)
        return (char *)blast;
    }
  }
  return NULL;
}
```