user: 下面的汇编指令对应的C源代码是什么:

```asm
<find_http_req>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %rdi,%rbx
  mov    %rdx,(%rsp)
  mov    %rcx,0x8(%rsp)
  cmp    $0x27,%rsi
  ja     L69
L159:
  mov    %rbx,%rax
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L69:
  mov    %rsi,%rbp
  mov    $0x4,%ecx
  lea    D12(%rip),%rdx
  call   <memstr@plt>
  mov    %rax,%r12
  test   %rax,%rax
  je     L37
L35:
  lea    0x4(%r12),%r14
  mov    %rbx,%rax
  sub    %r14,%rax
  mov    %rbp,%r15
  sub    %rax,%r15
  mov    $0x2,%ecx
  lea    D88(%rip),%rdx
  mov    %r15,%rsi
  mov    %r14,%rdi
  call   <memstr@plt>
  mov    %rax,%r13
  test   %rax,%rax
  je     L118
  lea    0x5(%r12),%r15
  cmp    %rax,%r15
  jbe    L14
  lea    0x2(%rax),%rbx
  jmp    L159
L37:
  mov    $0x5,%ecx
  lea    D36(%rip),%rdx
  mov    %rbp,%rsi
  mov    %rbx,%rdi
  call   <memstr@plt>
  mov    %rax,%r12
  test   %rax,%rax
  jne    L35
  lea    -0x4(%rbx,%rbp,1),%rbx
  jmp    L159
L118:
  cmp    $0x4000,%r15
  mov    %r12,%rbx
  cmova  %r14,%rbx
  jmp    L159
L14:
  lea    -0x9(%rax),%rdi
  mov    $0x8,%edx
  lea    D66(%rip),%rsi
  call   <memcmp@plt>
  test   %rax,%rax
  je     L60
L130:
  lea    0x2(%r13),%rbx
  jmp    L159
L60:
  movzbl -0x1(%r13),%esi
  lea    D23(%rip),%rdi
  call   <strchr@plt>
  test   %eax,%eax
  je     L130
  lea    0x2(%r13),%rdi
  mov    %rbx,%rax
  sub    %rdi,%rax
  mov    %rbp,%rcx
  sub    %rax,%rcx
  mov    %rcx,%rax
  mov    $0x4,%ecx
  lea    D79(%rip),%rdx
  mov    %rax,0x18(%rsp)
  mov    %rax,%rsi
  call   <memstr@plt>
  mov    %rax,0x10(%rsp)
  test   %rax,%rax
  je     L3
  mov    $0x7,%edx
  lea    D19(%rip),%rsi
  mov    %r14,%rdi
  call   <memcmp@plt>
  test   %rax,%rax
  jne    L174
  mov    $0x7,%edx
  lea    D19(%rip),%rsi
  mov    %r15,%rdi
  call   <memcmp@plt>
  test   %rax,%rax
  je     L58
L174:
  mov    0x10(%rsp),%rsi
  sub    %r13,%rsi
  add    $0x2,%rsi
  mov    $0x8,%ecx
  lea    D55(%rip),%rdx
  mov    %r13,%rdi
  call   <memstr@plt>
  test   %rax,%rax
  je     L1
L58:
  mov    (%rsp),%rax
  mov    %r12,(%rax)
  mov    0x10(%rsp),%rbx
  mov    %rbx,%rax
  sub    %r12,%rax
  mov    0x8(%rsp),%rcx
  mov    %rax,(%rcx)
  add    $0x4,%rbx
  jmp    L159
L3:
  lea    -0x4(%rbx,%rbp,1),%rbx
  cmpq   $0x4000,0x18(%rsp)
  cmovbe %r12,%rbx
  jmp    L159
L1:
  mov    0x10(%rsp),%rbx
  add    $0x4,%rbx
  jmp    L159
```

tool_calls: name: extract_symbolic_data
arguments: tag: D12
type: string
name: extract_symbolic_data
arguments: tag: D88
type: string
name: extract_symbolic_data
arguments: tag: D36
type: string
name: extract_symbolic_data
arguments: tag: D66
type: string
name: extract_symbolic_data
arguments: tag: D23
type: string
name: extract_symbolic_data
arguments: tag: D79
type: string
name: extract_symbolic_data
arguments: tag: D19
type: string
name: extract_symbolic_data
arguments: tag: D55
type: string

tool: D12: GET 

tool: D88: 


tool: D36: POST 

tool: D66:  HTTP/1.

tool: D23: 01

tool: D79: 



tool: D19: http://

tool: D55: 
Host: 

assistant: ```c
unsigned char *find_http_req(const unsigned char *data, const size_t len, unsigned char **http, size_t *httplen) {
  unsigned char *req, *le, *blankline, *hosthdr;
  if (len < 40)
    return (unsigned char *)data;
  if (!(req = memstr(data, len, (unsigned char *)"GET ", 4)))
    if (!(req = memstr(data, len, (unsigned char *)"POST ", 5)))
      return (unsigned char *)(data + len - 4);
  if (!(le = memstr(req + 4, (len - (data - (req + 4))), (unsigned char *)"\r\n", 2))) {
    if ((len - (data - (req + 4))) > 16384)
      return (unsigned char *)(req + 4);
    else
      return (unsigned char *)req;
  }
  if (le < req + 5)
    return le + 2;
  if (memcmp(le - 9, " HTTP/1.", 8) || !strchr("01", (int)*(le - 1)))
    return le + 2;
  if (!(blankline = memstr(le + 2, (len - (data - (le + 2))), (unsigned char *)"\r\n\r\n", 4))) {
    if ((len - (data - (le + 2))) > 16384)
      return (unsigned char *)(data + len - 4);
    else
      return req;
  }
  if (memcmp(req + 4, "http://", 7) == 0 && memcmp(req + 5, "http://", 7) == 0)
    goto found;
  if (!(hosthdr = memstr(le, blankline - le + 2, (unsigned char *)"\r\nHost: ", 8))) {
    return blankline + 4;
  }
found:
  *http = req;
  *httplen = blankline - req;
  return blankline + 4;
}
```