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

```asm
<cgemm_print_matrix>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %edi,0xc(%rsp)
  test   %edi,%edi
  jle    L36
  test   %esi,%esi
  jle    L36
  movslq %esi,%r12
  mov    %rdx,%r14
  lea    D2(%rip),%r13
  xor    %ebp,%ebp
  lea    0x0(,%r12,8),%r15
  nopl   (%rax)
L31:
  xor    %ebx,%ebx
  nopw   0x0(%rax,%rax,1)
L6:
  movss  (%r14,%rbx,8),%xmm0
  mov    %ebx,%edx
  mov    %ebp,%esi
  mov    %r13,%rdi
  movss  0x4(%r14,%rbx,8),%xmm1
  add    $0x1,%rbx
  call   <printf@plt>
  cmp    %rbx,%r12
  jne    L6
  add    %r15,%r14
  add    $0x1,%ebp
  cmp    %ebp,0xc(%rsp)
  jne    L31
L36:
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D2
type_guessed: string

tool: D2: %d,%d:	%f	%f


assistant: ```c
void cgemm_print_matrix(int M, int K, float *A) {
  int i, j;
  float *ap = A;
  for (i = 0; i < M; i++) {
    for (j = 0; j < K; j++) {
      printf("%d,%d:	%f\t%f\n", i, j, ap[0], ap[1]);
      ap += 2;
    }
  }
}
```
user: 请将以下的汇编代码转换成C语言代码：

```asm
<mk20dx256_uart0_init>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    $0x40048038,%eax
  mov    (%rax),%eax
  mov    $0x40048038,%edx
  or     $0x4,%ah
  mov    %eax,(%rdx)
  mov    $0x40048034,%eax
  mov    (%rax),%eax
  mov    $0x40048034,%edx
  and    $0xfb,%ah
  mov    %eax,(%rdx)
  mov    $0x4004a040,%eax
  movl   $0x313,(%rax)
  mov    $0x4004a044,%eax
  movl   $0x344,(%rax)
  mov    $0x40048034,%eax
  mov    (%rax),%eax
  mov    $0x40048034,%edx
  or     $0x4,%ah
  mov    %eax,(%rdx)
  mov    $0x4006a003,%eax
  movzbl (%rax),%eax
  mov    $0x4006a003,%edx
  and    $0xfffffff3,%eax
  mov    %al,(%rdx)
  mov    $0x4006a002,%eax
  movb   $0x0,(%rax)
  mov    $0x4006a000,%eax
  movb   $0x0,(%rax)
  mov    $0x4006a001,%eax
  movb   $0x9c,(%rax)
  mov    $0x4006a00a,%eax
  movb   $0x5,(%rax)
  mov    $0x4006a003,%eax
  movzbl (%rax),%eax
  mov    $0x4006a003,%edx
  or     $0xc,%eax
  mov    %al,(%rdx)
  nop
  pop    %rbp
  ret
```

assistant: ```c
void mk20dx256_uart0_init() {
  *((volatile unsigned int *)0x40048038) |= (1 << 10);
  *((volatile unsigned int *)0x40048034) &= ~(1 << 10);
  *((volatile unsigned int *)0x4004A040) = ((3) << 8) | (1 << 0) | (1 << 4) | (1 << 1);
  *((volatile unsigned int *)0x4004A044) = ((3) << 8) | (1 << 6) | (1 << 2);
  *((volatile unsigned int *)0x40048034) |= (1 << 10);
  *((volatile unsigned char *)0x4006A003) &= ~((1 << 3) | (1 << 2));
  *((volatile unsigned char *)0x4006A002) = 0;
  *((volatile unsigned char *)0x4006A000) = 0;
  *((volatile unsigned char *)0x4006A001) = 0x9C;
  *((volatile unsigned char *)0x4006A00A) = 5;
  *((volatile unsigned char *)0x4006A003) |= ((1 << 3) | (1 << 2));
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<mk20dx256_uart0_init>:
  endbr64
  mov    0x40048038,%eax
  or     $0x4,%ah
  mov    %eax,0x40048038
  mov    0x40048034,%eax
  and    $0xfb,%ah
  mov    %eax,0x40048034
  movl   $0x313,0x4004a040
  movl   $0x344,0x4004a044
  mov    0x40048034,%eax
  or     $0x4,%ah
  mov    %eax,0x40048034
  movzbl 0x4006a003,%eax
  and    $0xfffffff3,%eax
  mov    %al,0x4006a003
  movb   $0x0,0x4006a002
  movb   $0x0,0x4006a000
  movb   $0x9c,0x4006a001
  movb   $0x5,0x4006a00a
  movzbl 0x4006a003,%eax
  or     $0xc,%eax
  mov    %al,0x4006a003
  ret
```

assistant: ```c
void mk20dx256_uart0_init() {
  *((volatile unsigned int *)0x40048038) |= (1 << 10);
  *((volatile unsigned int *)0x40048034) &= ~(1 << 10);
  *((volatile unsigned int *)0x4004A040) = ((3) << 8) | (1 << 0) | (1 << 4) | (1 << 1);
  *((volatile unsigned int *)0x4004A044) = ((3) << 8) | (1 << 6) | (1 << 2);
  *((volatile unsigned int *)0x40048034) |= (1 << 10);
  *((volatile unsigned char *)0x4006A003) &= ~((1 << 3) | (1 << 2));
  *((volatile unsigned char *)0x4006A002) = 0;
  *((volatile unsigned char *)0x4006A000) = 0;
  *((volatile unsigned char *)0x4006A001) = 0x9C;
  *((volatile unsigned char *)0x4006A00A) = 5;
  *((volatile unsigned char *)0x4006A003) |= ((1 << 3) | (1 << 2));
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<mk20dx256_uart0_init>:
  endbr64
  mov    0x40048038,%eax
  or     $0x4,%ah
  mov    %eax,0x40048038
  mov    0x40048034,%eax
  and    $0xfb,%ah
  mov    %eax,0x40048034
  movl   $0x313,0x4004a040
  movl   $0x344,0x4004a044
  mov    0x40048034,%eax
  or     $0x4,%ah
  mov    %eax,0x40048034
  movzbl 0x4006a003,%eax
  and    $0xfffffff3,%eax
  mov    %al,0x4006a003
  movb   $0x0,0x4006a002
  movb   $0x0,0x4006a000
  movb   $0x9c,0x4006a001
  movb   $0x5,0x4006a00a
  movzbl 0x4006a003,%eax
  or     $0xc,%eax
  mov    %al,0x4006a003
  ret
```

assistant: ```c
void mk20dx256_uart0_init() {
  *((volatile unsigned int *)0x40048038) |= (1 << 10);
  *((volatile unsigned int *)0x40048034) &= ~(1 << 10);
  *((volatile unsigned int *)0x4004A040) = ((3) << 8) | (1 << 0) | (1 << 4) | (1 << 1);
  *((volatile unsigned int *)0x4004A044) = ((3) << 8) | (1 << 6) | (1 << 2);
  *((volatile unsigned int *)0x40048034) |= (1 << 10);
  *((volatile unsigned char *)0x4006A003) &= ~((1 << 3) | (1 << 2));
  *((volatile unsigned char *)0x4006A002) = 0;
  *((volatile unsigned char *)0x4006A000) = 0;
  *((volatile unsigned char *)0x4006A001) = 0x9C;
  *((volatile unsigned char *)0x4006A00A) = 5;
  *((volatile unsigned char *)0x4006A003) |= ((1 << 3) | (1 << 2));
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<mk20dx256_uart0_init>:
  endbr64
  mov    0x40048038,%eax
  or     $0x4,%ah
  mov    %eax,0x40048038
  mov    0x40048034,%eax
  and    $0xfb,%ah
  mov    %eax,0x40048034
  movl   $0x313,0x4004a040
  movl   $0x344,0x4004a044
  mov    0x40048034,%eax
  or     $0x4,%ah
  mov    %eax,0x40048034
  movzbl 0x4006a003,%eax
  and    $0xfffffff3,%eax
  mov    %al,0x4006a003
  movb   $0x0,0x4006a002
  movb   $0x0,0x4006a000
  movb   $0x9c,0x4006a001
  movb   $0x5,0x4006a00a
  movzbl 0x4006a003,%eax
  or     $0xc,%eax
  mov    %al,0x4006a003
  ret
```

assistant: ```c
void mk20dx256_uart0_init() {
  *((volatile unsigned int *)0x40048038) |= (1 << 10);
  *((volatile unsigned int *)0x40048034) &= ~(1 << 10);
  *((volatile unsigned int *)0x4004A040) = ((3) << 8) | (1 << 0) | (1 << 4) | (1 << 1);
  *((volatile unsigned int *)0x4004A044) = ((3) << 8) | (1 << 6) | (1 << 2);
  *((volatile unsigned int *)0x40048034) |= (1 << 10);
  *((volatile unsigned char *)0x4006A003) &= ~((1 << 3) | (1 << 2));
  *((volatile unsigned char *)0x4006A002) = 0;
  *((volatile unsigned char *)0x4006A000) = 0;
  *((volatile unsigned char *)0x4006A001) = 0x9C;
  *((volatile unsigned char *)0x4006A00A) = 5;
  *((volatile unsigned char *)0x4006A003) |= ((1 << 3) | (1 << 2));
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<getlittleline>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  movl   $0x0,-0x4(%rbp)
  jmp    L5
L31:
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    -0x8(%rbp),%edx
  mov    %dl,(%rax)
  addl   $0x1,-0x4(%rbp)
L5:
  cmpl   $0xf423e,-0x4(%rbp)
  jg     L98
  mov    $0x0,%eax
  call   <getchar@plt>
  mov    %eax,-0x8(%rbp)
  mov    D5(%rip),%rax
  mov    (%rax),%eax
  cmp    %eax,-0x8(%rbp)
  je     L98
  cmpl   $0xa,-0x8(%rbp)
  jne    L31
L98:
  cmpl   $0x0,-0x4(%rbp)
  jne    L72
  mov    $0x0,%eax
  jmp    L1
L72:
  cmpl   $0xa,-0x8(%rbp)
  jne    L25
  subl   $0x1,-0x4(%rbp)
  jmp    L25
L23:
  subl   $0x1,-0x4(%rbp)
L25:
  cmpl   $0x0,-0x4(%rbp)
  jle    L89
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x20,%al
  je     L23
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x9,%al
  je     L23
L89:
  cmpl   $0x0,-0x4(%rbp)
  jle    L24
  addl   $0x1,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movb   $0xa,(%rax)
L24:
  addl   $0x1,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  mov    -0x4(%rbp),%eax
L1:
  leave
  ret
```

assistant: ```c
int getlittleline(char line[]) {
  int lastchar, idx;
  for (idx = 0; idx < 1000000 - 1 && (lastchar = getchar()) != EOF && lastchar != '\n'; idx++)
    line[idx] = lastchar;
  if (idx == 0) {
    return 0;
  }
  if (lastchar == '\n') {
    idx--;
  }
  for (; idx > 0 && (line[idx] == ' ' || line[idx] == '\t'); --idx)
    ;
  if (idx > 0) {
    line[++idx] = '\n';
  }
  line[++idx] = '\0';
  return idx;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<getlittleline>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%r12
  mov    %rdi,%rbp
  mov    $0x0,%ebx
L32:
  mov    $0x0,%eax
  call   <getchar@plt>
  mov    D4(%rip),%rdx
  cmp    %eax,(%rdx)
  je     L51
  cmp    $0xa,%eax
  je     L51
  mov    %al,0x0(%rbp)
  add    $0x1,%ebx
  add    $0x1,%rbp
  cmp    $0xf423f,%ebx
  jne    L32
  jmp    L87
L51:
  test   %ebx,%ebx
  je     L19
  cmp    $0xa,%eax
  sete   %al
  movzbl %al,%eax
  sub    %eax,%ebx
L87:
  test   %ebx,%ebx
  jle    L35
  movslq %ebx,%rax
  add    %r12,%rax
  jmp    L69
L12:
  sub    $0x1,%rax
  sub    $0x1,%ebx
  je     L35
L69:
  movzbl (%rax),%edx
  cmp    $0x20,%dl
  je     L12
  cmp    $0x9,%dl
  je     L12
  test   %ebx,%ebx
  jle    L35
  add    $0x1,%ebx
  movslq %ebx,%rax
  movb   $0xa,(%r12,%rax,1)
L35:
  add    $0x1,%ebx
  movslq %ebx,%rax
  movb   $0x0,(%r12,%rax,1)
L19:
  mov    %ebx,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
int getlittleline(char line[]) {
  int lastchar, idx;
  for (idx = 0; idx < 1000000 - 1 && (lastchar = getchar()) != EOF && lastchar != '\n'; idx++)
    line[idx] = lastchar;
  if (idx == 0) {
    return 0;
  }
  if (lastchar == '\n') {
    idx--;
  }
  for (; idx > 0 && (line[idx] == ' ' || line[idx] == '\t'); --idx)
    ;
  if (idx > 0) {
    line[++idx] = '\n';
  }
  line[++idx] = '\0';
  return idx;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<getlittleline>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  xor    %ebx,%ebx
  sub    $0x8,%rsp
  mov    D5(%rip),%r13
  jmp    L68
  nopl   0x0(%rax)
L81:
  cmp    $0xa,%eax
  je     L10
  mov    %al,0x0(%rbp,%rbx,1)
  add    $0x1,%rbx
  cmp    $0xf423f,%rbx
  je     L89
L68:
  xor    %eax,%eax
  mov    %ebx,%r12d
  call   <getchar@plt>
  cmp    %eax,0x0(%r13)
  jne    L81
  test   %ebx,%ebx
  je     L112
  cmp    $0xa,%eax
  je     L111
L103:
  movslq %r12d,%rax
  jmp    L48
  nopl   0x0(%rax)
L6:
  sub    $0x1,%rax
  test   %eax,%eax
  je     L0
L48:
  movzbl 0x0(%rbp,%rax,1),%edx
  mov    %eax,%ecx
  cmp    $0x20,%dl
  je     L6
  cmp    $0x9,%dl
  je     L6
  lea    0x1(%rax),%eax
  lea    0x2(%rcx),%r12d
  cltq
  movb   $0xa,0x0(%rbp,%rax,1)
  movslq %r12d,%rax
L51:
  movb   $0x0,0x0(%rbp,%rax,1)
L112:
  add    $0x8,%rsp
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   (%rax)
L10:
  test   %ebx,%ebx
  je     L112
L111:
  sub    $0x1,%r12d
  jne    L103
  nopw   0x0(%rax,%rax,1)
L0:
  mov    $0x1,%eax
  mov    $0x1,%r12d
  jmp    L51
L89:
  mov    $0xf423f,%r12d
  jmp    L103
```

assistant: ```c
int getlittleline(char line[]) {
  int lastchar, idx;
  for (idx = 0; idx < 1000000 - 1 && (lastchar = getchar()) != EOF && lastchar != '\n'; idx++)
    line[idx] = lastchar;
  if (idx == 0) {
    return 0;
  }
  if (lastchar == '\n') {
    idx--;
  }
  for (; idx > 0 && (line[idx] == ' ' || line[idx] == '\t'); --idx)
    ;
  if (idx > 0) {
    line[++idx] = '\n';
  }
  line[++idx] = '\0';
  return idx;
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<getlittleline>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  xor    %ebx,%ebx
  sub    $0x8,%rsp
  mov    D5(%rip),%r13
  jmp    L29
  nopl   0x0(%rax)
L96:
  cmp    $0xa,%eax
  je     L91
  mov    %al,0x0(%rbp,%rbx,1)
  add    $0x1,%rbx
  cmp    $0xf423f,%rbx
  je     L21
L29:
  xor    %eax,%eax
  mov    %ebx,%r12d
  call   <getchar@plt>
  cmp    %eax,0x0(%r13)
  jne    L96
  test   %ebx,%ebx
  je     L93
  cmp    $0xa,%eax
  je     L131
L12:
  movslq %r12d,%rax
  jmp    L104
  nopl   0x0(%rax)
L113:
  sub    $0x1,%rax
  test   %eax,%eax
  je     L47
L104:
  movzbl 0x0(%rbp,%rax,1),%edx
  mov    %eax,%ecx
  cmp    $0x20,%dl
  je     L113
  cmp    $0x9,%dl
  je     L113
  lea    0x1(%rax),%eax
  lea    0x2(%rcx),%r12d
  cltq
  movb   $0xa,0x0(%rbp,%rax,1)
  movslq %r12d,%rax
L67:
  movb   $0x0,0x0(%rbp,%rax,1)
L93:
  add    $0x8,%rsp
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   (%rax)
L91:
  test   %ebx,%ebx
  je     L93
L131:
  sub    $0x1,%r12d
  jne    L12
  nopw   0x0(%rax,%rax,1)
L47:
  mov    $0x1,%eax
  mov    $0x1,%r12d
  jmp    L67
L21:
  mov    $0xf423f,%r12d
  jmp    L12
```

assistant: ```c
int getlittleline(char line[]) {
  int lastchar, idx;
  for (idx = 0; idx < 1000000 - 1 && (lastchar = getchar()) != EOF && lastchar != '\n'; idx++)
    line[idx] = lastchar;
  if (idx == 0) {
    return 0;
  }
  if (lastchar == '\n') {
    idx--;
  }
  for (; idx > 0 && (line[idx] == ' ' || line[idx] == '\t'); --idx)
    ;
  if (idx > 0) {
    line[++idx] = '\n';
  }
  line[++idx] = '\0';
  return idx;
}
```
user: 下面的汇编指令对应的C源代码是什么:

```asm
<strncat>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    %edx,-0x24(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,-0x8(%rbp)
  jmp    L41
L19:
  addq   $0x1,-0x18(%rbp)
L41:
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L19
  jmp    L37
L26:
  mov    -0x20(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x20(%rbp)
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,-0xc(%rbp)
  cmpl   $0x0,-0xc(%rbp)
  je     L5
  mov    -0x18(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x18(%rbp)
  mov    -0xc(%rbp),%edx
  mov    %dl,(%rax)
  subl   $0x1,-0x24(%rbp)
L37:
  cmpl   $0x0,-0x24(%rbp)
  jne    L26
  jmp    L58
L5:
  nop
L58:
  mov    -0x18(%rbp),%rax
  movb   $0x0,(%rax)
  mov    -0x8(%rbp),%rax
  pop    %rbp
  ret
```

assistant: ```c
char *strncat(char *s1, char *s2, unsigned n) {
  char *res = s1;
  int c;
  while (*s1 != '\0')
    s1++;
  while (n) {
    if ((c = *s2++) == '\0')
      break;
    *s1++ = c;
    n--;
  }
  *s1 = '\0';
  return res;
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<strncat>:
  endbr64
  mov    %rdi,%rax
  cmpb   $0x0,(%rdi)
  je     L36
  mov    %rdi,%rcx
L58:
  add    $0x1,%rcx
  cmpb   $0x0,(%rcx)
  jne    L58
L39:
  test   %edx,%edx
  je     L43
  mov    %edx,%edx
  lea    (%rcx,%rdx,1),%r8
L4:
  add    $0x1,%rsi
  movzbl -0x1(%rsi),%edx
  test   %dl,%dl
  je     L43
  add    $0x1,%rcx
  mov    %dl,-0x1(%rcx)
  cmp    %rcx,%r8
  jne    L4
  mov    %r8,%rcx
L43:
  movb   $0x0,(%rcx)
  ret
L36:
  mov    %rdi,%rcx
  jmp    L39
```

assistant: ```c
char *strncat(char *s1, char *s2, unsigned n) {
  char *res = s1;
  int c;
  while (*s1 != '\0')
    s1++;
  while (n) {
    if ((c = *s2++) == '\0')
      break;
    *s1++ = c;
    n--;
  }
  *s1 = '\0';
  return res;
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<strncat>:
  endbr64
  cmpb   $0x0,(%rdi)
  mov    %rdi,%rax
  mov    %rdi,%rcx
  je     L19
  nop
L25:
  add    $0x1,%rcx
  cmpb   $0x0,(%rcx)
  jne    L25
L19:
  test   %edx,%edx
  je     L16
  mov    %edx,%edx
  lea    (%rcx,%rdx,1),%r8
  jmp    L13
  nopl   (%rax)
L50:
  add    $0x1,%rcx
  mov    %dl,-0x1(%rcx)
  cmp    %rcx,%r8
  je     L16
L13:
  movzbl (%rsi),%edx
  add    $0x1,%rsi
  test   %dl,%dl
  jne    L50
L16:
  movb   $0x0,(%rcx)
  ret
```

assistant: ```c
char *strncat(char *s1, char *s2, unsigned n) {
  char *res = s1;
  int c;
  while (*s1 != '\0')
    s1++;
  while (n) {
    if ((c = *s2++) == '\0')
      break;
    *s1++ = c;
    n--;
  }
  *s1 = '\0';
  return res;
}
```
user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<strncat>:
  endbr64
  cmpb   $0x0,(%rdi)
  mov    %rdi,%rax
  mov    %rdi,%rcx
  je     L50
  nop
L43:
  add    $0x1,%rcx
  cmpb   $0x0,(%rcx)
  jne    L43
L50:
  test   %edx,%edx
  je     L49
  mov    %edx,%edx
  lea    (%rcx,%rdx,1),%r8
  jmp    L40
  nopl   (%rax)
L41:
  add    $0x1,%rcx
  mov    %dl,-0x1(%rcx)
  cmp    %rcx,%r8
  je     L49
L40:
  movzbl (%rsi),%edx
  add    $0x1,%rsi
  test   %dl,%dl
  jne    L41
L49:
  movb   $0x0,(%rcx)
  ret
```

assistant: ```c
char *strncat(char *s1, char *s2, unsigned n) {
  char *res = s1;
  int c;
  while (*s1 != '\0')
    s1++;
  while (n) {
    if ((c = *s2++) == '\0')
      break;
    *s1++ = c;
    n--;
  }
  *s1 = '\0';
  return res;
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<str_lower>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    $0x0,%eax
  call   <luaI_emptybuff@plt>
  mov    $0x1,%edi
  call   <luaL_check_string@plt>
  mov    %rax,-0x8(%rbp)
  jmp    L17
L15:
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,%edi
  call   <tolower@plt>
  mov    %eax,%edi
  call   <luaI_addchar@plt>
  addq   $0x1,-0x8(%rbp)
L17:
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L15
  mov    $0x0,%edi
  call   <luaI_addchar@plt>
  mov    %eax,%edi
  call   <lua_pushstring@plt>
  nop
  leave
  ret
```

assistant: ```c
void str_lower(void) {
  char *s;
  luaI_emptybuff();
  for (s = luaL_check_string(1); *s; s++)
    luaI_addchar(tolower((unsigned char)*s));
  lua_pushstring(luaI_addchar(0));
}
```
user: 下面的汇编指令对应的C源代码是什么：

```asm
<str_lower>:
  endbr64
  push   %rbx
  mov    $0x0,%eax
  call   <luaI_emptybuff@plt>
  mov    $0x1,%edi
  call   <luaL_check_string@plt>
  mov    %rax,%rbx
  movzbl (%rax),%edi
  test   %dil,%dil
  je     L1
L6:
  movzbl %dil,%edi
  call   <tolower@plt>
  mov    %eax,%edi
  call   <luaI_addchar@plt>
  add    $0x1,%rbx
  movzbl (%rbx),%edi
  test   %dil,%dil
  jne    L6
L1:
  mov    $0x0,%edi
  call   <luaI_addchar@plt>
  mov    %eax,%edi
  call   <lua_pushstring@plt>
  pop    %rbx
  ret
```

assistant: ```c
void str_lower(void) {
  char *s;
  luaI_emptybuff();
  for (s = luaL_check_string(1); *s; s++)
    luaI_addchar(tolower((unsigned char)*s));
  lua_pushstring(luaI_addchar(0));
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<str_lower>:
  endbr64
  push   %rbx
  xor    %eax,%eax
  call   <luaI_emptybuff@plt>
  mov    $0x1,%edi
  call   <luaL_check_string@plt>
  movzbl (%rax),%edi
  test   %dil,%dil
  je     L19
  mov    %rax,%rbx
  nopl   0x0(%rax)
L18:
  call   <tolower@plt>
  add    $0x1,%rbx
  mov    %eax,%edi
  call   <luaI_addchar@plt>
  movzbl (%rbx),%edi
  test   %dil,%dil
  jne    L18
L19:
  xor    %edi,%edi
  call   <luaI_addchar@plt>
  pop    %rbx
  mov    %eax,%edi
  jmp    10d0 <lua_pushstring@plt>
```

assistant: ```c
void str_lower(void) {
  char *s;
  luaI_emptybuff();
  for (s = luaL_check_string(1); *s; s++)
    luaI_addchar(tolower((unsigned char)*s));
  lua_pushstring(luaI_addchar(0));
}
```
user: 这段汇编代码用C语言表示是什么样的:

```asm
<str_lower>:
  endbr64
  push   %rbx
  xor    %eax,%eax
  call   <luaI_emptybuff@plt>
  mov    $0x1,%edi
  call   <luaL_check_string@plt>
  movzbl (%rax),%edi
  test   %dil,%dil
  je     L7
  mov    %rax,%rbx
  nopl   0x0(%rax)
L6:
  call   <tolower@plt>
  add    $0x1,%rbx
  mov    %eax,%edi
  call   <luaI_addchar@plt>
  movzbl (%rbx),%edi
  test   %dil,%dil
  jne    L6
L7:
  xor    %edi,%edi
  call   <luaI_addchar@plt>
  pop    %rbx
  mov    %eax,%edi
  jmp    10d0 <lua_pushstring@plt>
```

assistant: ```c
void str_lower(void) {
  char *s;
  luaI_emptybuff();
  for (s = luaL_check_string(1); *s; s++)
    luaI_addchar(tolower((unsigned char)*s));
  lua_pushstring(luaI_addchar(0));
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<saa7114_set_decoder_luminance_filter>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %edi,%eax
  mov    %al,-0x14(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    -0x9(%rbp),%rax
  mov    %rax,%rsi
  mov    $0x9,%edi
  call   <saa7114_read_reg@plt>
  movzbl -0x9(%rbp),%eax
  and    $0xfffffff0,%eax
  mov    %eax,%edx
  movzbl -0x14(%rbp),%eax
  and    $0xf,%eax
  or     %edx,%eax
  movzbl %al,%eax
  mov    %eax,%esi
  mov    $0x9,%edi
  call   <saa7114_write_reg@plt>
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L4
  call   <__stack_chk_fail@plt>
L4:
  leave
  ret
```

assistant: ```c
int saa7114_set_decoder_luminance_filter(unsigned char lufi) {
  unsigned char data;
  saa7114_read_reg(0x09, &data);
  saa7114_write_reg(0x09, (unsigned char)((data & ~0x0F) | (lufi & 0x0F)));
  return (0);
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<saa7114_set_decoder_luminance_filter>:
  endbr64
  push   %rbx
  sub    $0x10,%rsp
  mov    %edi,%ebx
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x7(%rsp),%rsi
  mov    $0x9,%edi
  call   <saa7114_read_reg@plt>
  movzbl 0x7(%rsp),%esi
  and    $0xfffffff0,%esi
  and    $0xf,%ebx
  or     %ebx,%esi
  movzbl %sil,%esi
  mov    $0x9,%edi
  call   <saa7114_write_reg@plt>
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L2
  mov    $0x0,%eax
  add    $0x10,%rsp
  pop    %rbx
  ret
L2:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int saa7114_set_decoder_luminance_filter(unsigned char lufi) {
  unsigned char data;
  saa7114_read_reg(0x09, &data);
  saa7114_write_reg(0x09, (unsigned char)((data & ~0x0F) | (lufi & 0x0F)));
  return (0);
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<saa7114_set_decoder_luminance_filter>:
  endbr64
  push   %rbx
  mov    %edi,%ebx
  mov    $0x9,%edi
  and    $0xf,%ebx
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x7(%rsp),%rsi
  call   <saa7114_read_reg@plt>
  movzbl 0x7(%rsp),%esi
  mov    $0x9,%edi
  and    $0xfffffff0,%esi
  or     %ebx,%esi
  movzbl %sil,%esi
  call   <saa7114_write_reg@plt>
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L4
  add    $0x10,%rsp
  xor    %eax,%eax
  pop    %rbx
  ret
L4:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int saa7114_set_decoder_luminance_filter(unsigned char lufi) {
  unsigned char data;
  saa7114_read_reg(0x09, &data);
  saa7114_write_reg(0x09, (unsigned char)((data & ~0x0F) | (lufi & 0x0F)));
  return (0);
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<saa7114_set_decoder_luminance_filter>:
  endbr64
  push   %rbx
  mov    %edi,%ebx
  mov    $0x9,%edi
  and    $0xf,%ebx
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x7(%rsp),%rsi
  call   <saa7114_read_reg@plt>
  movzbl 0x7(%rsp),%esi
  mov    $0x9,%edi
  and    $0xfffffff0,%esi
  or     %ebx,%esi
  movzbl %sil,%esi
  call   <saa7114_write_reg@plt>
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L3
  add    $0x10,%rsp
  xor    %eax,%eax
  pop    %rbx
  ret
L3:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int saa7114_set_decoder_luminance_filter(unsigned char lufi) {
  unsigned char data;
  saa7114_read_reg(0x09, &data);
  saa7114_write_reg(0x09, (unsigned char)((data & ~0x0F) | (lufi & 0x0F)));
  return (0);
}
```