ylfeng/ReF-Decompile-dataset huggingface dataset:
user: 这段汇编代码用C语言表示是什么样的？

```asm
<TtlMarshal_uint16_t>:
  endbr64
  mov    (%rdi),%rcx
  mov    (%rsi),%eax
  mov    %eax,%edx
  sar    $0x8,%edx
  movslq %edx,%rdx
  mov    %rdx,(%rcx)
  movzbl %al,%eax
  mov    %rax,0x8(%rcx)
  addq   $0x10,(%rdi)
  ret
```

assistant: ```c
void TtlMarshal_uint16_t(uint8_t **cursor, const uint16_t *x) {
  uint8_t *buffer = *cursor;
  uint16_t y = *x;
  buffer[0] = (uint8_t)(y >> 8);
  buffer[1] = (uint8_t)((y >> 0) & 0xff);
  *cursor += 2;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<TtlMarshal_uint16_t>:
  endbr64
  mov    (%rsi),%edx
  mov    (%rdi),%rax
  mov    %edx,%ecx
  movzbl %dl,%edx
  add    $0x10,%rax
  sar    $0x8,%ecx
  mov    %rdx,-0x8(%rax)
  movslq %ecx,%rcx
  mov    %rcx,-0x10(%rax)
  mov    %rax,(%rdi)
  ret
```

assistant: ```c
void TtlMarshal_uint16_t(uint8_t **cursor, const uint16_t *x) {
  uint8_t *buffer = *cursor;
  uint16_t y = *x;
  buffer[0] = (uint8_t)(y >> 8);
  buffer[1] = (uint8_t)((y >> 0) & 0xff);
  *cursor += 2;
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<TtlMarshal_uint16_t>:
  endbr64
  mov    (%rsi),%ecx
  mov    (%rdi),%rdx
  mov    %ecx,%eax
  movzbl %cl,%ecx
  add    $0x10,%rdx
  sar    $0x8,%eax
  movq   %rcx,%xmm1
  cltq
  movq   %rax,%xmm0
  punpcklqdq %xmm1,%xmm0
  movups %xmm0,-0x10(%rdx)
  mov    %rdx,(%rdi)
  ret
```

assistant: ```c
void TtlMarshal_uint16_t(uint8_t **cursor, const uint16_t *x) {
  uint8_t *buffer = *cursor;
  uint16_t y = *x;
  buffer[0] = (uint8_t)(y >> 8);
  buffer[1] = (uint8_t)((y >> 0) & 0xff);
  *cursor += 2;
}
```
user: Translate the below assembly code into C programming language:

```asm
<SDL_imageFilterAddByte>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %edx,-0x34(%rbp)
  mov    %ecx,%eax
  mov    %al,-0x38(%rbp)
  mov    $0x0,%eax
  call   <SDL_imageFilterMMXdetect@plt>
  test   %rax,%rax
  je     L25
  cmpl   $0x7,-0x34(%rbp)
  jle    L25
  movzbl -0x38(%rbp),%ecx
  mov    -0x34(%rbp),%edx
  mov    -0x30(%rbp),%rsi
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <SDL_imageFilterAddByteMMX@plt>
  mov    -0x34(%rbp),%eax
  and    $0x7,%eax
  test   %eax,%eax
  jle    L65
  mov    -0x34(%rbp),%eax
  and    $0xfffffff8,%eax
  mov    %eax,-0x1c(%rbp)
  mov    -0x1c(%rbp),%edx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x1c(%rbp),%edx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
  jmp    L67
L65:
  mov    $0x0,%eax
  jmp    L10
L25:
  movl   $0x0,-0x1c(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x30(%rbp),%rax
  mov    %rax,-0x8(%rbp)
L67:
  movzbl -0x38(%rbp),%eax
  mov    %eax,-0x14(%rbp)
  mov    -0x1c(%rbp),%eax
  mov    %eax,-0x20(%rbp)
  jmp    L52
L2:
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
  mov    -0x14(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x18(%rbp)
  cmpl   $0xff,-0x18(%rbp)
  jle    L6
  movl   $0xff,-0x18(%rbp)
L6:
  mov    -0x18(%rbp),%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%rax
  mov    %dl,(%rax)
  addq   $0x1,-0x10(%rbp)
  addq   $0x1,-0x8(%rbp)
  addl   $0x1,-0x20(%rbp)
L52:
  mov    -0x34(%rbp),%eax
  cmp    %eax,-0x20(%rbp)
  jb     L2
  mov    $0x0,%eax
L10:
  leave
  ret
```

assistant: ```c
int SDL_imageFilterAddByte(unsigned char *Src1, unsigned char *Dest, int length, unsigned char C) {
  unsigned int i, istart;
  int iC;
  unsigned char *cursrc1, *curdest;
  int result;
  if ((SDL_imageFilterMMXdetect()) && (length > 7)) {
    SDL_imageFilterAddByteMMX(Src1, Dest, length, C);
    if ((length & 7) > 0) {
      istart = length & 0xfffffff8;
      cursrc1 = &Src1[istart];
      curdest = &Dest[istart];
    } else {
      return (0);
    }
  } else {
    istart = 0;
    cursrc1 = Src1;
    curdest = Dest;
  }
  iC = (int)C;
  for (i = istart; i < length; i++) {
    result = (int)*cursrc1 + iC;
    if (result > 255)
      result = 255;
    *curdest = (unsigned char)result;
    cursrc1++;
    curdest++;
  }
  return (0);
}
```
user: 这段汇编代码用C语言表示是什么样的?

```asm
<SDL_imageFilterAddByte>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%rbx
  mov    %rsi,%rbp
  mov    %edx,%r12d
  mov    %ecx,%r13d
  mov    $0x0,%eax
  call   <SDL_imageFilterMMXdetect@plt>
  cmp    $0x7,%r12d
  jle    L8
  test   %rax,%rax
  jne    L49
L8:
  mov    $0x0,%eax
L36:
  movzbl %r13b,%edi
  cmp    %r12d,%eax
  jae    L23
  lea    -0x1(%r12),%esi
  sub    %eax,%esi
  mov    $0x0,%edx
L2:
  movzbl (%rbx,%rdx,1),%eax
  add    %edi,%eax
  mov    $0xff,%ecx
  cmp    %ecx,%eax
  cmovg  %ecx,%eax
  mov    %al,0x0(%rbp,%rdx,1)
  mov    %rdx,%rax
  add    $0x1,%rdx
  cmp    %rsi,%rax
  jne    L2
L23:
  mov    $0x0,%eax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L49:
  movzbl %r13b,%ecx
  mov    %r12d,%edx
  mov    %rbp,%rsi
  mov    %rbx,%rdi
  call   <SDL_imageFilterAddByteMMX@plt>
  test   $0x7,%r12b
  je     L23
  mov    %r12d,%eax
  and    $0xfffffff8,%eax
  mov    %eax,%edx
  add    %rdx,%rbx
  add    %rdx,%rbp
  jmp    L36
```

assistant: ```c
int SDL_imageFilterAddByte(unsigned char *Src1, unsigned char *Dest, int length, unsigned char C) {
  unsigned int i, istart;
  int iC;
  unsigned char *cursrc1, *curdest;
  int result;
  if ((SDL_imageFilterMMXdetect()) && (length > 7)) {
    SDL_imageFilterAddByteMMX(Src1, Dest, length, C);
    if ((length & 7) > 0) {
      istart = length & 0xfffffff8;
      cursrc1 = &Src1[istart];
      curdest = &Dest[istart];
    } else {
      return (0);
    }
  } else {
    istart = 0;
    cursrc1 = Src1;
    curdest = Dest;
  }
  iC = (int)C;
  for (i = istart; i < length; i++) {
    result = (int)*cursrc1 + iC;
    if (result > 255)
      result = 255;
    *curdest = (unsigned char)result;
    cursrc1++;
    curdest++;
  }
  return (0);
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<SDL_imageFilterAddByte>:
  endbr64
  push   %r13
  xor    %eax,%eax
  mov    %ecx,%r13d
  push   %r12
  mov    %rsi,%r12
  movzbl %r13b,%r13d
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  mov    %edx,%ebx
  sub    $0x8,%rsp
  call   <SDL_imageFilterMMXdetect@plt>
  test   %rax,%rax
  je     L26
  cmp    $0x7,%ebx
  jg     L36
L26:
  xor    %eax,%eax
L31:
  cmp    %ebx,%eax
  jae    L50
  lea    -0x1(%rbx),%edx
  xor    %ecx,%ecx
  sub    %eax,%edx
  nopl   0x0(%rax,%rax,1)
L43:
  movzbl 0x0(%rbp,%rcx,1),%eax
  mov    $0xff,%esi
  add    %r13d,%eax
  cmp    %esi,%eax
  cmovg  %esi,%eax
  mov    %al,(%r12,%rcx,1)
  mov    %rcx,%rax
  add    $0x1,%rcx
  cmp    %rax,%rdx
  jne    L43
L50:
  add    $0x8,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nop
L36:
  mov    %r13d,%ecx
  mov    %ebx,%edx
  mov    %r12,%rsi
  mov    %rbp,%rdi
  call   <SDL_imageFilterAddByteMMX@plt>
  test   $0x7,%bl
  je     L50
  mov    %ebx,%eax
  and    $0xfffffff8,%eax
  mov    %eax,%edx
  add    %rdx,%rbp
  add    %rdx,%r12
  jmp    L31
```

assistant: ```c
int SDL_imageFilterAddByte(unsigned char *Src1, unsigned char *Dest, int length, unsigned char C) {
  unsigned int i, istart;
  int iC;
  unsigned char *cursrc1, *curdest;
  int result;
  if ((SDL_imageFilterMMXdetect()) && (length > 7)) {
    SDL_imageFilterAddByteMMX(Src1, Dest, length, C);
    if ((length & 7) > 0) {
      istart = length & 0xfffffff8;
      cursrc1 = &Src1[istart];
      curdest = &Dest[istart];
    } else {
      return (0);
    }
  } else {
    istart = 0;
    cursrc1 = Src1;
    curdest = Dest;
  }
  iC = (int)C;
  for (i = istart; i < length; i++) {
    result = (int)*cursrc1 + iC;
    if (result > 255)
      result = 255;
    *curdest = (unsigned char)result;
    cursrc1++;
    curdest++;
  }
  return (0);
}
```
user: Translate the below assembly code into C programming language:

```asm
<bar>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  movl   $0x0,-0x4(%rbp)
  jmp    L6
L10:
  addl   $0x1,-0x4(%rbp)
L6:
  cmpl   $0xc34f,-0x4(%rbp)
  jle    L10
  mov    $0x2710,%edi
  mov    $0x0,%eax
  call   <usleep@plt>
  nop
  leave
  ret
```

assistant: ```c
void bar(void) {
  int i;
  for (i = 0; i < 50000; i++)
    asm volatile("" ::: "memory");
  usleep(10000);
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<bar>:
  endbr64
  sub    $0x8,%rsp
  mov    $0xc350,%eax
L7:
  sub    $0x1,%eax
  jne    L7
  mov    $0x2710,%edi
  mov    $0x0,%eax
  call   <usleep@plt>
  add    $0x8,%rsp
  ret
```

assistant: ```c
void bar(void) {
  int i;
  for (i = 0; i < 50000; i++)
    asm volatile("" ::: "memory");
  usleep(10000);
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<bar>:
  endbr64
  mov    $0xc350,%eax
  nopl   0x0(%rax)
L9:
  sub    $0x1,%eax
  jne    L9
  mov    $0x2710,%edi
  xor    %eax,%eax
  jmp    1050 <usleep@plt>
```

assistant: ```c
void bar(void) {
  int i;
  for (i = 0; i < 50000; i++)
    asm volatile("" ::: "memory");
  usleep(10000);
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<bar>:
  endbr64
  mov    $0xc350,%eax
  nopl   0x0(%rax)
L8:
  sub    $0x1,%eax
  jne    L8
  mov    $0x2710,%edi
  xor    %eax,%eax
  jmp    1050 <usleep@plt>
```

assistant: ```c
void bar(void) {
  int i;
  for (i = 0; i < 50000; i++)
    asm volatile("" ::: "memory");
  usleep(10000);
}
```
user: What is the c source code of the assembly code below:

```asm
<sum>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  cmpl   $0x0,-0x1c(%rbp)
  jns    L18
  mov    $0x0,%eax
  jmp    L4
L18:
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%ebx
  mov    -0x1c(%rbp),%eax
  lea    -0x1(%rax),%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <sum>
  add    %ebx,%eax
L4:
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

assistant: ```c
int sum(int *a, int n) {
  if (n < 0)
    return 0;
  else
    return a[n] + sum(a, n - 1);
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<sum>:
  endbr64
  mov    $0x0,%eax
  test   %esi,%esi
  jns    L3
  ret
L3:
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%rbp
  mov    %esi,%ebx
  lea    -0x1(%rsi),%esi
  call   <sum>
  movslq %ebx,%rbx
  add    0x0(%rbp,%rbx,4),%eax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
```

assistant: ```c
int sum(int *a, int n) {
  if (n < 0)
    return 0;
  else
    return a[n] + sum(a, n - 1);
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<sum>:
  endbr64
  xor    %r8d,%r8d
  test   %esi,%esi
  js     L8
  movslq %esi,%rsi
  xor    %r8d,%r8d
  lea    (%rdi,%rsi,4),%rax
  sub    $0x4,%rdi
  nopl   0x0(%rax)
L2:
  add    (%rax),%r8d
  sub    $0x4,%rax
  cmp    %rdi,%rax
  jne    L2
L8:
  mov    %r8d,%eax
  ret
```

assistant: ```c
int sum(int *a, int n) {
  if (n < 0)
    return 0;
  else
    return a[n] + sum(a, n - 1);
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<sum>:
  endbr64
  mov    %rdi,%rcx
  test   %esi,%esi
  js     L33
  lea    0x1(%rsi),%r8d
  cmp    $0x2,%esi
  jle    L75
  movslq %esi,%rax
  pxor   %xmm0,%xmm0
  lea    -0xc(%rdi,%rax,4),%rdx
  mov    %r8d,%edi
  shr    $0x2,%edi
  lea    -0x10(%rdx),%rax
  lea    -0x1(%rdi),%r9d
  mov    %rax,%rdi
  shl    $0x4,%r9
  sub    %r9,%rdi
  jmp    L63
  nopw   0x0(%rax,%rax,1)
L25:
  sub    $0x10,%rax
L63:
  movdqu (%rdx),%xmm1
  mov    %rax,%rdx
  pshufd $0x1b,%xmm1,%xmm1
  paddd  %xmm1,%xmm0
  cmp    %rdi,%rax
  jne    L25
  movdqa %xmm0,%xmm1
  mov    %r8d,%edx
  psrldq $0x8,%xmm1
  and    $0xfffffffc,%edx
  paddd  %xmm1,%xmm0
  sub    %edx,%esi
  movdqa %xmm0,%xmm1
  psrldq $0x4,%xmm1
  paddd  %xmm1,%xmm0
  movd   %xmm0,%eax
  cmp    %edx,%r8d
  je     L31
L3:
  movslq %esi,%rdx
  lea    0x0(,%rdx,4),%rdi
  add    (%rcx,%rdx,4),%eax
  test   %esi,%esi
  je     L27
  add    -0x4(%rcx,%rdi,1),%eax
  cmp    $0x1,%esi
  je     L27
  add    -0x8(%rcx,%rdi,1),%eax
L27:
  ret
  nopl   0x0(%rax)
L31:
  ret
  nopl   0x0(%rax)
L33:
  xor    %eax,%eax
  ret
L75:
  xor    %eax,%eax
  jmp    L3
```

assistant: ```c
int sum(int *a, int n) {
  if (n < 0)
    return 0;
  else
    return a[n] + sum(a, n - 1);
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<usage>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %rdi,-0x8(%rbp)
  lea    D31(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <println@plt>
  mov    -0x8(%rbp),%rax
  mov    %rax,%rsi
  lea    D34(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <println@plt>
  mov    -0x8(%rbp),%rax
  mov    %rax,%rsi
  lea    D11(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <println@plt>
  mov    -0x8(%rbp),%rax
  mov    %rax,%rsi
  lea    D47(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <println@plt>
  lea    D31(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <println@plt>
  nop
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: label: D31
type_infered: string
name: extract_symbolic_data
arguments: label: D34
type_infered: string
name: extract_symbolic_data
arguments: label: D11
type_infered: string
name: extract_symbolic_data
arguments: label: D47
type_infered: string

tool: 

tool: D34: %s command utility

tool: D11: usage: %s <file.gz> [estract the gz file]

tool: D47: 	%s -h/--help/-?	show this help

assistant: ```c
void usage(const char *cmdname) {
  println("");
  println("%s command utility", cmdname);
  println("usage: %s <file.gz> [estract the gz file]", cmdname);
  println("\t%s -h/--help/-?\tshow this help", cmdname);
  println("");
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<usage>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%rbx
  lea    D38(%rip),%rbp
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <println@plt>
  mov    %rbx,%rsi
  lea    D4(%rip),%rdi
  mov    $0x0,%eax
  call   <println@plt>
  mov    %rbx,%rsi
  lea    D14(%rip),%rdi
  mov    $0x0,%eax
  call   <println@plt>
  mov    %rbx,%rsi
  lea    D12(%rip),%rdi
  mov    $0x0,%eax
  call   <println@plt>
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <println@plt>
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
```

tool_calls: name: read_data
arguments: tag: D38
type_guessed: string
name: read_data
arguments: tag: D4
type_guessed: string
name: read_data
arguments: tag: D14
type_guessed: string
name: read_data
arguments: tag: D12
type_guessed: string

tool: 

tool: D4: %s command utility

tool: D14: usage: %s <file.gz> [estract the gz file]

tool: D12: 	%s -h/--help/-?	show this help

assistant: ```c
void usage(const char *cmdname) {
  println("");
  println("%s command utility", cmdname);
  println("usage: %s <file.gz> [estract the gz file]", cmdname);
  println("\t%s -h/--help/-?\tshow this help", cmdname);
  println("");
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<usage>:
  endbr64
  push   %r12
  lea    D37(%rip),%r12
  xor    %eax,%eax
  push   %rbp
  mov    %rdi,%rbp
  mov    %r12,%rdi
  sub    $0x8,%rsp
  call   <println@plt>
  mov    %rbp,%rsi
  lea    D33(%rip),%rdi
  xor    %eax,%eax
  call   <println@plt>
  mov    %rbp,%rsi
  lea    D4(%rip),%rdi
  xor    %eax,%eax
  call   <println@plt>
  mov    %rbp,%rsi
  lea    D25(%rip),%rdi
  xor    %eax,%eax
  call   <println@plt>
  add    $0x8,%rsp
  mov    %r12,%rdi
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  jmp    1050 <println@plt>
```

tool_calls: name: unpack_data
arguments: data_tag: D37
type_infered: string
name: unpack_data
arguments: data_tag: D33
type_infered: string
name: unpack_data
arguments: data_tag: D4
type_infered: string
name: unpack_data
arguments: data_tag: D25
type_infered: string

tool: 

tool: D33: %s command utility

tool: D4: usage: %s <file.gz> [estract the gz file]

tool: D25: 	%s -h/--help/-?	show this help

assistant: ```c
void usage(const char *cmdname) {
  println("");
  println("%s command utility", cmdname);
  println("usage: %s <file.gz> [estract the gz file]", cmdname);
  println("\t%s -h/--help/-?\tshow this help", cmdname);
  println("");
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<usage>:
  endbr64
  push   %r12
  lea    D13(%rip),%r12
  xor    %eax,%eax
  push   %rbp
  mov    %rdi,%rbp
  mov    %r12,%rdi
  sub    $0x8,%rsp
  call   <println@plt>
  mov    %rbp,%rsi
  lea    D35(%rip),%rdi
  xor    %eax,%eax
  call   <println@plt>
  mov    %rbp,%rsi
  lea    D5(%rip),%rdi
  xor    %eax,%eax
  call   <println@plt>
  mov    %rbp,%rsi
  lea    D19(%rip),%rdi
  xor    %eax,%eax
  call   <println@plt>
  add    $0x8,%rsp
  mov    %r12,%rdi
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  jmp    1050 <println@plt>
```

tool_calls: name: unpack_data
arguments: data_label: D13
type_guessed: string
name: unpack_data
arguments: data_label: D35
type_guessed: string
name: unpack_data
arguments: data_label: D5
type_guessed: string
name: unpack_data
arguments: data_label: D19
type_guessed: string

tool: 

tool: D35: %s command utility

tool: D5: usage: %s <file.gz> [estract the gz file]

tool: D19: 	%s -h/--help/-?	show this help

assistant: ```c
void usage(const char *cmdname) {
  println("");
  println("%s command utility", cmdname);
  println("usage: %s <file.gz> [estract the gz file]", cmdname);
  println("\t%s -h/--help/-?\tshow this help", cmdname);
  println("");
}
```
user: 下面的汇编指令对应的C源代码是什么：

```asm
<str_find_c>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %rdx,-0x38(%rbp)
  mov    %rcx,-0x40(%rbp)
  mov    %r8d,-0x44(%rbp)
  movl   $0xffffffff,-0x18(%rbp)
  movl   $0x0,-0x10(%rbp)
  movl   $0x0,-0xc(%rbp)
  movl   $0x0,-0x14(%rbp)
  movq   $0x0,-0x8(%rbp)
  cmpq   $0x0,-0x28(%rbp)
  je     L54
  cmpq   $0x0,-0x30(%rbp)
  jle    L54
  cmpq   $0x0,-0x38(%rbp)
  jne    L56
L54:
  mov    $0xffffffff,%eax
  jmp    L128
L56:
  mov    -0x38(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,-0x10(%rbp)
  cmpl   $0x0,-0x10(%rbp)
  jg     L61
  mov    $0x0,%eax
  jmp    L128
L61:
  mov    -0x30(%rbp),%rax
  mov    -0x10(%rbp),%edx
  sub    %edx,%eax
  mov    %eax,-0xc(%rbp)
  cmpl   $0x0,-0x44(%rbp)
  je     L120
  mov    D15(%rip),%rax
  mov    (%rax),%rax
  jmp    L122
L120:
  mov    D5(%rip),%rax
  mov    (%rax),%rax
L122:
  mov    %rax,-0x8(%rbp)
  movl   $0x0,-0x14(%rbp)
  jmp    L73
L14:
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x14(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x28(%rbp),%rax
  lea    (%rcx,%rax,1),%rdi
  mov    -0x38(%rbp),%rax
  mov    -0x8(%rbp),%rcx
  mov    %rax,%rsi
  call   *%rcx
  test   %eax,%eax
  jne    L82
  mov    -0x14(%rbp),%eax
  mov    %eax,-0x18(%rbp)
L82:
  addl   $0x1,-0x14(%rbp)
L73:
  mov    -0x14(%rbp),%eax
  cmp    -0xc(%rbp),%eax
  jg     L83
  cmpl   $0x0,-0x18(%rbp)
  js     L14
L83:
  cmpl   $0x0,-0x18(%rbp)
  js     L125
  cmpq   $0x0,-0x40(%rbp)
  je     L125
  mov    -0x18(%rbp),%edx
  mov    -0x10(%rbp),%eax
  add    %edx,%eax
  movslq %eax,%rdx
  mov    -0x40(%rbp),%rax
  mov    %rdx,(%rax)
L125:
  mov    -0x18(%rbp),%eax
L128:
  leave
  ret
```

assistant: ```c
int16_t str_find_c(char *s, uint16_t l, char *t, uint16_t *t_end, int16_t ignore_case) {
  int16_t result = -1;
  int16_t tl = 0;
  int16_t sl = 0;
  int16_t i = 0;
  int16_t (*cmp)(char *, char *, size_t) = 0;
  if ((!s) || (l <= 0) || (!t)) {
    return -1;
  }
  tl = strlen(t);
  if (tl <= 0) {
    return 0;
  }
  sl = l - tl;
  cmp = (int16_t(*)(char *, char *, size_t))(ignore_case ? strncasecmp : strncmp);
  for (i = 0; (i <= sl) && (result < 0); i = i + 1) {
    if (cmp(&(s[i]), t, tl) == 0) {
      result = i;
    }
  }
  if ((result >= 0) && (t_end)) {
    *t_end = result + tl;
  }
  return result;
}
```
user: What would the C source look like for the assembly code provided here?

```asm
<str_find_c>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %rdx,%r14
  mov    %rcx,0x18(%rsp)
  test   %rsi,%rsi
  setle  %al
  test   %rdx,%rdx
  sete   %dl
  or     %dl,%al
  jne    L111
  mov    %rdi,%rbp
  mov    %rsi,%r13
  mov    %r8d,%ebx
  test   %rdi,%rdi
  je     L111
  mov    %r14,%rdi
  call   <strlen@plt>
  mov    %eax,0x14(%rsp)
  mov    $0x0,%r12d
  test   %eax,%eax
  jle    L83
  sub    %eax,%r13d
  test   %ebx,%ebx
  je     L17
  mov    D9(%rip),%rax
  mov    (%rax),%r15
L97:
  test   %r13d,%r13d
  js     L73
  mov    $0x0,%ebx
  mov    $0xffffffff,%r12d
  movslq 0x14(%rsp),%rax
  mov    %rax,0x8(%rsp)
L12:
  mov    0x8(%rsp),%rdx
  mov    %r14,%rsi
  mov    %rbp,%rdi
  call   *%r15
  test   %eax,%eax
  cmove  %ebx,%r12d
  add    $0x1,%ebx
  add    $0x1,%rbp
  cmp    %ebx,%r13d
  jl     L31
  test   %r12d,%r12d
  js     L12
L31:
  test   %r12d,%r12d
  js     L83
  mov    0x18(%rsp),%rcx
  test   %rcx,%rcx
  je     L83
  mov    0x14(%rsp),%eax
  add    %r12d,%eax
  cltq
  mov    %rax,(%rcx)
L83:
  mov    %r12d,%eax
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L17:
  mov    D14(%rip),%rax
  mov    (%rax),%r15
  jmp    L97
L111:
  mov    $0xffffffff,%r12d
  jmp    L83
L73:
  mov    $0xffffffff,%r12d
  jmp    L83
```

assistant: ```c
int16_t str_find_c(char *s, uint16_t l, char *t, uint16_t *t_end, int16_t ignore_case) {
  int16_t result = -1;
  int16_t tl = 0;
  int16_t sl = 0;
  int16_t i = 0;
  int16_t (*cmp)(char *, char *, size_t) = 0;
  if ((!s) || (l <= 0) || (!t)) {
    return -1;
  }
  tl = strlen(t);
  if (tl <= 0) {
    return 0;
  }
  sl = l - tl;
  cmp = (int16_t(*)(char *, char *, size_t))(ignore_case ? strncasecmp : strncmp);
  for (i = 0; (i <= sl) && (result < 0); i = i + 1) {
    if (cmp(&(s[i]), t, tl) == 0) {
      result = i;
    }
  }
  if ((result >= 0) && (t_end)) {
    *t_end = result + tl;
  }
  return result;
}
```
user: Translate the below assembly code into C programming language:

```asm
<str_find_c>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  mov    %rdx,%rbp
  push   %rbx
  sub    $0x18,%rsp
  test   %rsi,%rsi
  setle  %al
  test   %rdx,%rdx
  mov    %rcx,0x8(%rsp)
  sete   %dl
  or     %dl,%al
  jne    L3
  mov    %rdi,%r12
  test   %rdi,%rdi
  je     L3
  mov    %rbp,%rdi
  mov    %rsi,%rbx
  mov    %r8d,%r14d
  xor    %r13d,%r13d
  call   <strlen@plt>
  mov    %eax,0x4(%rsp)
  test   %eax,%eax
  jle    L55
  mov    %ebx,%ecx
  sub    %eax,%ecx
  mov    %ecx,(%rsp)
  test   %r14d,%r14d
  jne    L1
  mov    D3(%rip),%rax
  mov    (%rax),%r14
L56:
  mov    (%rsp),%eax
  test   %eax,%eax
  js     L3
  movslq 0x4(%rsp),%r15
  xor    %ebx,%ebx
  nopw   0x0(%rax,%rax,1)
L25:
  mov    %ebx,%r13d
  lea    (%r12,%rbx,1),%rdi
  mov    %r15,%rdx
  mov    %rbp,%rsi
  call   *%r14
  test   %eax,%eax
  jne    L64
  mov    0x8(%rsp),%rcx
  test   %rcx,%rcx
  je     L55
  mov    0x4(%rsp),%eax
  add    %ebx,%eax
  cltq
  mov    %rax,(%rcx)
L55:
  add    $0x18,%rsp
  mov    %r13d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax,%rax,1)
L1:
  mov    D17(%rip),%rax
  mov    (%rax),%r14
  jmp    L56
  nopl   0x0(%rax)
L64:
  add    $0x1,%rbx
  cmp    %ebx,(%rsp)
  jge    L25
  nopl   0x0(%rax)
L3:
  mov    $0xffffffff,%r13d
  jmp    L55
```

assistant: ```c
int16_t str_find_c(char *s, uint16_t l, char *t, uint16_t *t_end, int16_t ignore_case) {
  int16_t result = -1;
  int16_t tl = 0;
  int16_t sl = 0;
  int16_t i = 0;
  int16_t (*cmp)(char *, char *, size_t) = 0;
  if ((!s) || (l <= 0) || (!t)) {
    return -1;
  }
  tl = strlen(t);
  if (tl <= 0) {
    return 0;
  }
  sl = l - tl;
  cmp = (int16_t(*)(char *, char *, size_t))(ignore_case ? strncasecmp : strncmp);
  for (i = 0; (i <= sl) && (result < 0); i = i + 1) {
    if (cmp(&(s[i]), t, tl) == 0) {
      result = i;
    }
  }
  if ((result >= 0) && (t_end)) {
    *t_end = result + tl;
  }
  return result;
}
```