user: Converte this assembly snippet into its equivalent C code:

```asm
<count_bytes>:
  endbr64
  mov    %esi,%ecx
  test   %esi,%esi
  jle    L43
  lea    -0x1(%rsi),%eax
  cmp    $0xe,%eax
  jbe    L140
  movd   %edx,%xmm4
  shr    $0x4,%esi
  mov    %rdi,%rax
  pxor   %xmm1,%xmm1
  punpcklbw %xmm4,%xmm4
  pxor   %xmm6,%xmm6
  pxor   %xmm5,%xmm5
  sub    $0x1,%esi
  punpcklwd %xmm4,%xmm4
  shl    $0x4,%rsi
  movdqa D7(%rip),%xmm7
  pshufd $0x0,%xmm4,%xmm4
  lea    0x10(%rdi,%rsi,1),%rsi
  nopl   0x0(%rax)
L147:
  movdqu (%rax),%xmm0
  movdqa %xmm6,%xmm3
  add    $0x10,%rax
  pcmpeqb %xmm4,%xmm0
  pand   %xmm7,%xmm0
  pcmpgtb %xmm0,%xmm3
  movdqa %xmm0,%xmm2
  punpcklbw %xmm3,%xmm2
  punpckhbw %xmm3,%xmm0
  movdqa %xmm5,%xmm3
  pcmpgtw %xmm2,%xmm3
  movdqa %xmm2,%xmm8
  punpcklwd %xmm3,%xmm8
  punpckhwd %xmm3,%xmm2
  movdqa %xmm0,%xmm3
  paddd  %xmm8,%xmm1
  paddd  %xmm2,%xmm1
  movdqa %xmm5,%xmm2
  pcmpgtw %xmm0,%xmm2
  punpcklwd %xmm2,%xmm3
  punpckhwd %xmm2,%xmm0
  paddd  %xmm3,%xmm1
  paddd  %xmm0,%xmm1
  cmp    %rsi,%rax
  jne    L147
  movdqa %xmm1,%xmm0
  mov    %ecx,%esi
  psrldq $0x8,%xmm0
  and    $0xfffffff0,%esi
  paddd  %xmm0,%xmm1
  movdqa %xmm1,%xmm0
  psrldq $0x4,%xmm0
  paddd  %xmm0,%xmm1
  movd   %xmm1,%eax
  test   $0xf,%cl
  je     L98
L118:
  movslq %esi,%r8
  cmp    %dl,(%rdi,%r8,1)
  sete   %r8b
  movzbl %r8b,%r8d
  add    %r8d,%eax
  lea    0x1(%rsi),%r8d
  cmp    %ecx,%r8d
  jge    L28
  movslq %r8d,%r8
  cmp    %dl,(%rdi,%r8,1)
  sete   %r8b
  movzbl %r8b,%r8d
  add    %r8d,%eax
  lea    0x2(%rsi),%r8d
  cmp    %r8d,%ecx
  jle    L28
  movslq %r8d,%r8
  cmp    %dl,(%rdi,%r8,1)
  sete   %r8b
  movzbl %r8b,%r8d
  add    %r8d,%eax
  lea    0x3(%rsi),%r8d
  cmp    %r8d,%ecx
  jle    L28
  movslq %r8d,%r8
  cmp    %dl,(%rdi,%r8,1)
  sete   %r8b
  movzbl %r8b,%r8d
  add    %r8d,%eax
  lea    0x4(%rsi),%r8d
  cmp    %r8d,%ecx
  jle    L28
  movslq %r8d,%r8
  cmp    %dl,(%rdi,%r8,1)
  sete   %r8b
  movzbl %r8b,%r8d
  add    %r8d,%eax
  lea    0x5(%rsi),%r8d
  cmp    %r8d,%ecx
  jle    L28
  movslq %r8d,%r8
  cmp    %dl,(%rdi,%r8,1)
  sete   %r8b
  movzbl %r8b,%r8d
  add    %r8d,%eax
  lea    0x6(%rsi),%r8d
  cmp    %r8d,%ecx
  jle    L28
  movslq %r8d,%r8
  cmp    %dl,(%rdi,%r8,1)
  sete   %r8b
  movzbl %r8b,%r8d
  add    %r8d,%eax
  lea    0x7(%rsi),%r8d
  cmp    %r8d,%ecx
  jle    L28
  movslq %r8d,%r8
  cmp    %dl,(%rdi,%r8,1)
  sete   %r8b
  movzbl %r8b,%r8d
  add    %r8d,%eax
  lea    0x8(%rsi),%r8d
  cmp    %r8d,%ecx
  jle    L28
  movslq %r8d,%r8
  cmp    %dl,(%rdi,%r8,1)
  sete   %r8b
  movzbl %r8b,%r8d
  add    %r8d,%eax
  lea    0x9(%rsi),%r8d
  cmp    %r8d,%ecx
  jle    L28
  movslq %r8d,%r8
  cmp    %dl,(%rdi,%r8,1)
  sete   %r8b
  movzbl %r8b,%r8d
  add    %r8d,%eax
  lea    0xa(%rsi),%r8d
  cmp    %r8d,%ecx
  jle    L28
  movslq %r8d,%r8
  cmp    %dl,(%rdi,%r8,1)
  sete   %r8b
  movzbl %r8b,%r8d
  add    %r8d,%eax
  lea    0xb(%rsi),%r8d
  cmp    %r8d,%ecx
  jle    L28
  movslq %r8d,%r8
  cmp    %dl,(%rdi,%r8,1)
  sete   %r8b
  movzbl %r8b,%r8d
  add    %r8d,%eax
  lea    0xc(%rsi),%r8d
  cmp    %r8d,%ecx
  jle    L28
  movslq %r8d,%r8
  cmp    %dl,(%rdi,%r8,1)
  sete   %r8b
  movzbl %r8b,%r8d
  add    %r8d,%eax
  lea    0xd(%rsi),%r8d
  cmp    %r8d,%ecx
  jle    L28
  movslq %r8d,%r8
  cmp    %dl,(%rdi,%r8,1)
  sete   %r8b
  add    $0xe,%esi
  movzbl %r8b,%r8d
  add    %r8d,%eax
  cmp    %esi,%ecx
  jle    L28
  movslq %esi,%rsi
  cmp    %dl,(%rdi,%rsi,1)
  sete   %dl
  movzbl %dl,%edx
  add    %edx,%eax
  ret
  nopw   0x0(%rax,%rax,1)
L43:
  xor    %eax,%eax
L28:
  ret
L140:
  xor    %esi,%esi
  xor    %eax,%eax
  jmp    L118
L98:
  ret
```

tool_calls: name: retrieve_data
arguments: tag: D7
data_type: byte[16]

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

assistant: ```c
int count_bytes(void *buf, int len, char b) {
  int cnt = 0;
  int i;
  for (i = 0; i < len; i++) {
    if (((char *)buf)[i] == b)
      cnt++;
  }
  return cnt;
}
```