ylfeng/ReF-Decompile-dataset huggingface dataset:
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<del_port_vlan_h3c>:
  endbr64
  push   %r15
  mov    %rdi,%r15
  mov    %ecx,%edi
  push   %r14
  mov    %esi,%r14d
  lea    D12(%rip),%rsi
  push   %r13
  mov    %ecx,%r13d
  push   %r12
  mov    %edx,%r12d
  mov    $0xc,%edx
  push   %rbp
  sub    $0x810,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x808(%rsp)
  xor    %eax,%eax
  mov    %rsp,%rbp
  call   <write@plt>
  mov    $0x46,%edi
  call   <mmsleep@plt>
  mov    $0x800,%edx
  mov    %rbp,%rsi
  mov    %r12d,%edi
  call   <read@plt>
  xor    %esi,%esi
  mov    $0x800,%edx
  mov    %rbp,%rdi
  call   <memset@plt>
  mov    %r15,%rdx
  mov    %rbp,%rdi
  xor    %eax,%eax
  lea    D15(%rip),%rsi
  call   <sprintf@plt>
  mov    %rbp,%rdi
  call   <strlen@plt>
  mov    %rbp,%rsi
  mov    %r13d,%edi
  mov    %eax,%edx
  call   <write@plt>
  mov    $0x46,%edi
  call   <mmsleep@plt>
  mov    $0x800,%edx
  mov    %rbp,%rsi
  mov    %r12d,%edi
  call   <read@plt>
  xor    %esi,%esi
  mov    $0x800,%edx
  mov    %rbp,%rdi
  call   <memset@plt>
  mov    %r14d,%edx
  mov    %rbp,%rdi
  xor    %eax,%eax
  lea    D4(%rip),%rsi
  lea    D5(%rip),%r14
  call   <sprintf@plt>
  mov    %rbp,%rdi
  call   <strlen@plt>
  mov    %rbp,%rsi
  mov    %r13d,%edi
  mov    %eax,%edx
  call   <write@plt>
  mov    $0xfa,%edi
  call   <mmsleep@plt>
  mov    $0x800,%edx
  mov    %rbp,%rsi
  mov    %r12d,%edi
  call   <read@plt>
  mov    $0x5,%edx
  mov    %r14,%rsi
  mov    %r13d,%edi
  call   <write@plt>
  mov    $0x46,%edi
  call   <mmsleep@plt>
  mov    $0x800,%edx
  mov    %rbp,%rsi
  mov    %r12d,%edi
  call   <read@plt>
  mov    $0x5,%edx
  mov    %r14,%rsi
  mov    %r13d,%edi
  call   <write@plt>
  mov    $0x46,%edi
  call   <mmsleep@plt>
  mov    $0x800,%edx
  mov    %rbp,%rsi
  mov    %r12d,%edi
  call   <read@plt>
  mov    0x808(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L7
  add    $0x810,%rsp
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L7:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: label: D12
type_infered: string
name: parse_data
arguments: label: D15
type_infered: string
name: parse_data
arguments: label: D4
type_infered: string
name: parse_data
arguments: label: D5
type_infered: string

tool: D12: system-view

tool: D15: interface %s

tool: D4: undo port trunk permit vlan %d

tool: D5: quit

assistant: ```c
int del_port_vlan_h3c(char *setport, int vlanid, int rfd, int wfd) {
  char buf[2048];
  write(wfd, "system-view\r", 12);
  mmsleep(70);
  read(rfd, buf, sizeof(buf));
  memset(buf, 0, sizeof(buf));
  sprintf(buf, "interface %s\r", setport);
  write(wfd, buf, strlen(buf));
  mmsleep(70);
  read(rfd, buf, sizeof(buf));
  memset(buf, 0, sizeof(buf));
  sprintf(buf, "undo port trunk permit vlan %d\r", vlanid);
  write(wfd, buf, strlen(buf));
  mmsleep(250);
  read(rfd, buf, sizeof(buf));
  write(wfd, "quit\r", 5);
  mmsleep(70);
  read(rfd, buf, sizeof(buf));
  write(wfd, "quit\r", 5);
  mmsleep(70);
  read(rfd, buf, sizeof(buf));
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<del_port_vlan_h3c>:
  endbr64
  push   %r15
  mov    %rdi,%r15
  mov    %ecx,%edi
  push   %r14
  mov    %esi,%r14d
  lea    D10(%rip),%rsi
  push   %r13
  mov    %ecx,%r13d
  push   %r12
  mov    %edx,%r12d
  mov    $0xc,%edx
  push   %rbp
  sub    $0x810,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x808(%rsp)
  xor    %eax,%eax
  mov    %rsp,%rbp
  call   <write@plt>
  mov    $0x46,%edi
  call   <mmsleep@plt>
  mov    $0x800,%edx
  mov    %rbp,%rsi
  mov    %r12d,%edi
  call   <read@plt>
  xor    %esi,%esi
  mov    $0x800,%edx
  mov    %rbp,%rdi
  call   <memset@plt>
  mov    %r15,%rdx
  mov    %rbp,%rdi
  xor    %eax,%eax
  lea    D5(%rip),%rsi
  call   <sprintf@plt>
  mov    %rbp,%rdi
  call   <strlen@plt>
  mov    %rbp,%rsi
  mov    %r13d,%edi
  mov    %eax,%edx
  call   <write@plt>
  mov    $0x46,%edi
  call   <mmsleep@plt>
  mov    $0x800,%edx
  mov    %rbp,%rsi
  mov    %r12d,%edi
  call   <read@plt>
  xor    %esi,%esi
  mov    $0x800,%edx
  mov    %rbp,%rdi
  call   <memset@plt>
  mov    %r14d,%edx
  mov    %rbp,%rdi
  xor    %eax,%eax
  lea    D22(%rip),%rsi
  lea    D24(%rip),%r14
  call   <sprintf@plt>
  mov    %rbp,%rdi
  call   <strlen@plt>
  mov    %rbp,%rsi
  mov    %r13d,%edi
  mov    %eax,%edx
  call   <write@plt>
  mov    $0xfa,%edi
  call   <mmsleep@plt>
  mov    $0x800,%edx
  mov    %rbp,%rsi
  mov    %r12d,%edi
  call   <read@plt>
  mov    $0x5,%edx
  mov    %r14,%rsi
  mov    %r13d,%edi
  call   <write@plt>
  mov    $0x46,%edi
  call   <mmsleep@plt>
  mov    $0x800,%edx
  mov    %rbp,%rsi
  mov    %r12d,%edi
  call   <read@plt>
  mov    $0x5,%edx
  mov    %r14,%rsi
  mov    %r13d,%edi
  call   <write@plt>
  mov    $0x46,%edi
  call   <mmsleep@plt>
  mov    $0x800,%edx
  mov    %rbp,%rsi
  mov    %r12d,%edi
  call   <read@plt>
  mov    0x808(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L0
  add    $0x810,%rsp
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L0:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: label: D10
data_type: string
name: parse_data
arguments: label: D5
data_type: string
name: parse_data
arguments: label: D22
data_type: string
name: parse_data
arguments: label: D24
data_type: string

tool: D10: system-view

tool: D5: interface %s

tool: D22: undo port trunk permit vlan %d

tool: D24: quit

assistant: ```c
int del_port_vlan_h3c(char *setport, int vlanid, int rfd, int wfd) {
  char buf[2048];
  write(wfd, "system-view\r", 12);
  mmsleep(70);
  read(rfd, buf, sizeof(buf));
  memset(buf, 0, sizeof(buf));
  sprintf(buf, "interface %s\r", setport);
  write(wfd, buf, strlen(buf));
  mmsleep(70);
  read(rfd, buf, sizeof(buf));
  memset(buf, 0, sizeof(buf));
  sprintf(buf, "undo port trunk permit vlan %d\r", vlanid);
  write(wfd, buf, strlen(buf));
  mmsleep(250);
  read(rfd, buf, sizeof(buf));
  write(wfd, "quit\r", 5);
  mmsleep(70);
  read(rfd, buf, sizeof(buf));
  write(wfd, "quit\r", 5);
  mmsleep(70);
  read(rfd, buf, sizeof(buf));
}
```
user: What would the C source look like for the assembly code provided here?

```asm
<crcGetASCIIFromHex>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %edi,-0x14(%rbp)
  mov    %esi,%eax
  mov    %al,-0x18(%rbp)
  cmpb   $0x0,-0x18(%rbp)
  jne    L81
  mov    -0x14(%rbp),%eax
  and    $0xf,%eax
  mov    %al,-0x1(%rbp)
  jmp    L77
L81:
  cmpb   $0x1,-0x18(%rbp)
  jne    L103
  mov    -0x14(%rbp),%eax
  shr    $0x4,%eax
  and    $0xf,%eax
  mov    %al,-0x1(%rbp)
  jmp    L77
L103:
  cmpb   $0x2,-0x18(%rbp)
  jne    L9
  mov    -0x14(%rbp),%eax
  shr    $0x8,%eax
  and    $0xf,%eax
  mov    %al,-0x1(%rbp)
  jmp    L77
L9:
  cmpb   $0x3,-0x18(%rbp)
  jne    L77
  mov    -0x14(%rbp),%eax
  shr    $0xc,%eax
  and    $0xf,%eax
  mov    %al,-0x1(%rbp)
L77:
  cmpb   $0x9,-0x1(%rbp)
  ja     L0
  addb   $0x30,-0x1(%rbp)
  jmp    L68
L0:
  cmpb   $0x9,-0x1(%rbp)
  jbe    L93
  cmpb   $0xf,-0x1(%rbp)
  ja     L93
  addb   $0x37,-0x1(%rbp)
  jmp    L68
L93:
  movb   $0x30,-0x1(%rbp)
L68:
  movzbl -0x1(%rbp),%eax
  pop    %rbp
  ret
```

assistant: ```c
unsigned char crcGetASCIIFromHex(unsigned int c, unsigned char pos) {
  unsigned char crcbyte;
  if (pos == 0)
    crcbyte = (c & 0x000F);
  else if (pos == 1)
    crcbyte = (c & 0x00F0) >> 4;
  else if (pos == 2)
    crcbyte = (c & 0x0F00) >> 8;
  else if (pos == 3)
    crcbyte = (c & 0xF000) >> 12;
  if (crcbyte >= 0 && crcbyte <= 9)
    crcbyte += 48;
  else if (crcbyte >= 10 && crcbyte <= 15)
    crcbyte += 55;
  else
    crcbyte = 48;
  return crcbyte;
}
```
user: 请从给定的汇编指令推导出C源代码:

```asm
<crcGetASCIIFromHex>:
  endbr64
  test   %sil,%sil
  jne    L12
  and    $0xf,%edi
L49:
  lea    0x30(%rdi),%edx
  lea    0x37(%rdi),%eax
  cmp    $0x9,%dil
  cmovbe %edx,%eax
  ret
L12:
  cmp    $0x1,%sil
  je     L31
  cmp    $0x2,%sil
  je     L22
  shr    $0xc,%edi
  and    $0xf,%edi
  cmp    $0x3,%sil
  mov    $0x0,%eax
  cmovne %eax,%edi
  jmp    L49
L31:
  shr    $0x4,%dil
  jmp    L49
L22:
  shr    $0x8,%edi
  and    $0xf,%edi
  jmp    L49
```

assistant: ```c
unsigned char crcGetASCIIFromHex(unsigned int c, unsigned char pos) {
  unsigned char crcbyte;
  if (pos == 0)
    crcbyte = (c & 0x000F);
  else if (pos == 1)
    crcbyte = (c & 0x00F0) >> 4;
  else if (pos == 2)
    crcbyte = (c & 0x0F00) >> 8;
  else if (pos == 3)
    crcbyte = (c & 0xF000) >> 12;
  if (crcbyte >= 0 && crcbyte <= 9)
    crcbyte += 48;
  else if (crcbyte >= 10 && crcbyte <= 15)
    crcbyte += 55;
  else
    crcbyte = 48;
  return crcbyte;
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<crcGetASCIIFromHex>:
  endbr64
  test   %sil,%sil
  je     L8
  cmp    $0x1,%sil
  je     L25
  cmp    $0x2,%sil
  je     L24
  shr    $0xc,%edi
  mov    %edi,%eax
  xor    %edi,%edi
  and    $0xf,%eax
  cmp    $0x3,%sil
  cmove  %eax,%edi
  lea    0x30(%rdi),%edx
  lea    0x37(%rdi),%eax
  cmp    $0x9,%dil
  cmovbe %edx,%eax
  ret
  nopl   0x0(%rax)
L24:
  shr    $0x8,%edi
L8:
  and    $0xf,%edi
  lea    0x30(%rdi),%edx
  lea    0x37(%rdi),%eax
  cmp    $0x9,%dil
  cmovbe %edx,%eax
  ret
  nopl   0x0(%rax)
L25:
  shr    $0x4,%dil
  lea    0x30(%rdi),%edx
  lea    0x37(%rdi),%eax
  cmp    $0x9,%dil
  cmovbe %edx,%eax
  ret
```

assistant: ```c
unsigned char crcGetASCIIFromHex(unsigned int c, unsigned char pos) {
  unsigned char crcbyte;
  if (pos == 0)
    crcbyte = (c & 0x000F);
  else if (pos == 1)
    crcbyte = (c & 0x00F0) >> 4;
  else if (pos == 2)
    crcbyte = (c & 0x0F00) >> 8;
  else if (pos == 3)
    crcbyte = (c & 0xF000) >> 12;
  if (crcbyte >= 0 && crcbyte <= 9)
    crcbyte += 48;
  else if (crcbyte >= 10 && crcbyte <= 15)
    crcbyte += 55;
  else
    crcbyte = 48;
  return crcbyte;
}
```
user: 这段汇编代码用C语言表示是什么样的?

```asm
<crcGetASCIIFromHex>:
  endbr64
  test   %sil,%sil
  je     L11
  cmp    $0x1,%sil
  je     L19
  cmp    $0x2,%sil
  je     L9
  shr    $0xc,%edi
  mov    %edi,%eax
  xor    %edi,%edi
  and    $0xf,%eax
  cmp    $0x3,%sil
  cmove  %eax,%edi
  lea    0x30(%rdi),%edx
  lea    0x37(%rdi),%eax
  cmp    $0x9,%dil
  cmovbe %edx,%eax
  ret
  nopl   0x0(%rax)
L9:
  shr    $0x8,%edi
L11:
  and    $0xf,%edi
  lea    0x30(%rdi),%edx
  lea    0x37(%rdi),%eax
  cmp    $0x9,%dil
  cmovbe %edx,%eax
  ret
  nopl   0x0(%rax)
L19:
  shr    $0x4,%dil
  lea    0x30(%rdi),%edx
  lea    0x37(%rdi),%eax
  cmp    $0x9,%dil
  cmovbe %edx,%eax
  ret
```

assistant: ```c
unsigned char crcGetASCIIFromHex(unsigned int c, unsigned char pos) {
  unsigned char crcbyte;
  if (pos == 0)
    crcbyte = (c & 0x000F);
  else if (pos == 1)
    crcbyte = (c & 0x00F0) >> 4;
  else if (pos == 2)
    crcbyte = (c & 0x0F00) >> 8;
  else if (pos == 3)
    crcbyte = (c & 0xF000) >> 12;
  if (crcbyte >= 0 && crcbyte <= 9)
    crcbyte += 48;
  else if (crcbyte >= 10 && crcbyte <= 15)
    crcbyte += 55;
  else
    crcbyte = 48;
  return crcbyte;
}
```
user: 请将以下的汇编代码转换成C语言代码：

```asm
<test_simdlen>:
  endbr64
  ret
```

assistant: ```c
void test_simdlen() {
  int i;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen()
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(,
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(, )
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen 4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4,
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4, )
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4 4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4, , 4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4, 8)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(2.5)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(foo())
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(-5)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(0)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(5 - 5)
  for (i = 0; i < 16; ++i)
    ;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<test_simdlen>:
  endbr64
  ret
```

assistant: ```c
void test_simdlen() {
  int i;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen()
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(,
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(, )
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen 4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4,
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4, )
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4 4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4, , 4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4, 8)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(2.5)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(foo())
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(-5)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(0)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(5 - 5)
  for (i = 0; i < 16; ++i)
    ;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<test_simdlen>:
  endbr64
  ret
```

assistant: ```c
void test_simdlen() {
  int i;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen()
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(,
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(, )
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen 4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4,
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4, )
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4 4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4, , 4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(4, 8)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(2.5)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(foo())
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(-5)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(0)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute parallel for simd simdlen(5 - 5)
  for (i = 0; i < 16; ++i)
    ;
}
```
user: Demonstrate the C code that generates the assembly output below:

```asm
<byte_zero>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x8(%rbp)
  mov    %esi,%eax
L29:
  test   %eax,%eax
  je     L72
  mov    -0x8(%rbp),%rdx
  lea    0x1(%rdx),%rcx
  mov    %rcx,-0x8(%rbp)
  movb   $0x0,(%rdx)
  sub    $0x1,%eax
  test   %eax,%eax
  je     L35
  mov    -0x8(%rbp),%rdx
  lea    0x1(%rdx),%rcx
  mov    %rcx,-0x8(%rbp)
  movb   $0x0,(%rdx)
  sub    $0x1,%eax
  test   %eax,%eax
  je     L56
  mov    -0x8(%rbp),%rdx
  lea    0x1(%rdx),%rcx
  mov    %rcx,-0x8(%rbp)
  movb   $0x0,(%rdx)
  sub    $0x1,%eax
  test   %eax,%eax
  je     L48
  mov    -0x8(%rbp),%rdx
  lea    0x1(%rdx),%rcx
  mov    %rcx,-0x8(%rbp)
  movb   $0x0,(%rdx)
  sub    $0x1,%eax
  jmp    L29
L72:
  nop
  jmp    L11
L35:
  nop
  jmp    L11
L56:
  nop
  jmp    L11
L48:
  nop
L11:
  nop
  pop    %rbp
  ret
```

assistant: ```c
void byte_zero(s, n) char *s;
register unsigned int n;
{
  for (;;) {
    if (!n)
      break;
    *s++ = 0;
    --n;
    if (!n)
      break;
    *s++ = 0;
    --n;
    if (!n)
      break;
    *s++ = 0;
    --n;
    if (!n)
      break;
    *s++ = 0;
    --n;
  }
}
```
user: Please show me the C implementation that matches the assembly code listed below:

```asm
<byte_zero>:
  endbr64
  test   %esi,%esi
  je     L36
  movb   $0x0,(%rdi)
  cmp    $0x1,%esi
  je     L36
  movb   $0x0,0x1(%rdi)
  cmp    $0x2,%esi
  je     L36
  movb   $0x0,0x2(%rdi)
  cmp    $0x3,%esi
  je     L45
L11:
  add    $0x4,%rdi
  movb   $0x0,-0x1(%rdi)
  sub    $0x4,%esi
  je     L36
  movb   $0x0,(%rdi)
  cmp    $0x1,%esi
  je     L36
  movb   $0x0,0x1(%rdi)
  cmp    $0x2,%esi
  je     L36
  movb   $0x0,0x2(%rdi)
  cmp    $0x3,%esi
  jne    L11
L36:
  ret
L45:
  ret
```

assistant: ```c
void byte_zero(s, n) char *s;
register unsigned int n;
{
  for (;;) {
    if (!n)
      break;
    *s++ = 0;
    --n;
    if (!n)
      break;
    *s++ = 0;
    --n;
    if (!n)
      break;
    *s++ = 0;
    --n;
    if (!n)
      break;
    *s++ = 0;
    --n;
  }
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<byte_zero>:
  endbr64
  test   %esi,%esi
  je     L36
  movb   $0x0,(%rdi)
  cmp    $0x1,%esi
  je     L36
  movb   $0x0,0x1(%rdi)
  cmp    $0x2,%esi
  je     L36
  movb   $0x0,0x2(%rdi)
  cmp    $0x3,%esi
  jne    L57
  jmp    L83
  nopl   0x0(%rax)
L53:
  movb   $0x0,(%rdi)
  cmp    $0x1,%esi
  je     L36
  movb   $0x0,0x1(%rdi)
  cmp    $0x2,%esi
  je     L36
  movb   $0x0,0x2(%rdi)
  cmp    $0x3,%esi
  je     L36
L57:
  add    $0x4,%rdi
  movb   $0x0,-0x1(%rdi)
  sub    $0x4,%esi
  jne    L53
L36:
  ret
L83:
  ret
```

assistant: ```c
void byte_zero(s, n) char *s;
register unsigned int n;
{
  for (;;) {
    if (!n)
      break;
    *s++ = 0;
    --n;
    if (!n)
      break;
    *s++ = 0;
    --n;
    if (!n)
      break;
    *s++ = 0;
    --n;
    if (!n)
      break;
    *s++ = 0;
    --n;
  }
}
```
user: 这段汇编代码用C语言表示是什么样的？

```asm
<byte_zero>:
  endbr64
  test   %esi,%esi
  je     L79
  movb   $0x0,(%rdi)
  cmp    $0x1,%esi
  je     L79
  movb   $0x0,0x1(%rdi)
  cmp    $0x2,%esi
  je     L79
  movb   $0x0,0x2(%rdi)
  cmp    $0x3,%esi
  jne    L2
  jmp    L59
  nopl   0x0(%rax)
L77:
  movb   $0x0,(%rdi)
  cmp    $0x1,%esi
  je     L79
  movb   $0x0,0x1(%rdi)
  cmp    $0x2,%esi
  je     L79
  movb   $0x0,0x2(%rdi)
  cmp    $0x3,%esi
  je     L79
L2:
  add    $0x4,%rdi
  movb   $0x0,-0x1(%rdi)
  sub    $0x4,%esi
  jne    L77
L79:
  ret
L59:
  ret
```

assistant: ```c
void byte_zero(s, n) char *s;
register unsigned int n;
{
  for (;;) {
    if (!n)
      break;
    *s++ = 0;
    --n;
    if (!n)
      break;
    *s++ = 0;
    --n;
    if (!n)
      break;
    *s++ = 0;
    --n;
    if (!n)
      break;
    *s++ = 0;
    --n;
  }
}
```
user: 下面的汇编指令对应的C源代码是什么：

```asm
<sighandler>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %edi,-0x4(%rbp)
  mov    $0x0,%eax
  call   <save_posns@plt>
  mov    $0x0,%edi
  call   <exit@plt>
  nop
  leave
  ret
```

assistant: ```c
void sighandler(int signum) {
  save_posns();
  exit(0);
}
```
user: 下面的汇编指令对应的C源代码是什么：

```asm
<sighandler>:
  endbr64
  sub    $0x8,%rsp
  mov    $0x0,%eax
  call   <save_posns@plt>
  mov    $0x0,%edi
  call   <exit@plt>
  add    $0x8,%rsp
  ret
```

assistant: ```c
void sighandler(int signum) {
  save_posns();
  exit(0);
}
```
user: 请将以下的汇编代码转换成C语言代码:

```asm
<sighandler>:
  endbr64
  sub    $0x8,%rsp
  xor    %eax,%eax
  call   <save_posns@plt>
  xor    %edi,%edi
  add    $0x8,%rsp
  jmp    1060 <exit@plt>
```

assistant: ```c
void sighandler(int signum) {
  save_posns();
  exit(0);
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<next_c_matches>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,%eax
  mov    %al,-0x1c(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <next_c@plt>
  mov    %al,-0x1(%rbp)
  movsbl -0x1(%rbp),%eax
  mov    -0x18(%rbp),%rdx
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <ungetc@plt>
  movzbl -0x1c(%rbp),%eax
  cmp    -0x1(%rbp),%al
  jne    L16
  mov    $0x1,%eax
  jmp    L5
L16:
  mov    $0x0,%eax
L5:
  leave
  ret
```

assistant: ```c
bool next_c_matches(FILE *scene_file, char c) {
  ((void)0);
  char d = next_c(scene_file);
  ungetc(d, scene_file);
  if (c == d)
    return true;
  else
    return false;
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<next_c_matches>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbp
  mov    %esi,%r12d
  call   <next_c@plt>
  mov    %eax,%ebx
  movsbl %al,%edi
  mov    %rbp,%rsi
  call   <ungetc@plt>
  cmp    %r12b,%bl
  sete   %al
  movzbl %al,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
bool next_c_matches(FILE *scene_file, char c) {
  ((void)0);
  char d = next_c(scene_file);
  ungetc(d, scene_file);
  if (c == d)
    return true;
  else
    return false;
}
```