user: 请从给定的汇编指令推导出C源代码：

```asm
<main>:
  endbr64
  push   %r15
  mov    $0x8001,%edi
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  call   <malloc@plt>
  mov    $0x8001,%edi
  mov    %rax,%r15
  call   <malloc@plt>
  mov    $0x8001,%edi
  mov    %rax,%r14
  call   <malloc@plt>
  mov    $0x8001,%edi
  mov    %rax,%r13
  call   <malloc@plt>
  mov    $0x8001,%edi
  mov    %rax,%r12
  call   <malloc@plt>
  mov    %r15,%rdi
  mov    $0x8000,%edx
  mov    $0x26,%esi
  mov    %rax,%rbp
  call   <memset@plt>
  mov    %r14,%rdi
  mov    $0x8000,%edx
  mov    $0x26,%esi
  call   <memset@plt>
  mov    %r13,%rdi
  mov    $0x8000,%edx
  mov    $0x26,%esi
  call   <memset@plt>
  mov    %r12,%rdi
  mov    $0x8000,%edx
  mov    $0x26,%esi
  call   <memset@plt>
  mov    $0x8000,%edx
  mov    $0x26,%esi
  mov    %rbp,%rdi
  call   <memset@plt>
  rdtsc
  mov    $0x8000,%esi
  mov    %rax,%rbx
  mov    %r15,%rdi
  xor    %eax,%eax
  call   <old_bzero@plt>
  rdtsc
  lea    D44(%rip),%r8
  mov    %rax,%rsi
  mov    %r15,%rdx
  xor    %eax,%eax
  sub    %rbx,%rsi
  mov    %r8,%rdi
  call   <printf@plt>
  rdtsc
  mov    $0x8000,%esi
  mov    %rax,%rbx
  mov    %r14,%rdi
  xor    %eax,%eax
  call   <old_bzero@plt>
  rdtsc
  lea    D44(%rip),%r8
  mov    %rax,%rsi
  mov    %r14,%rdx
  xor    %eax,%eax
  sub    %rbx,%rsi
  mov    %r8,%rdi
  call   <printf@plt>
  rdtsc
  mov    $0x8000,%esi
  mov    %rax,%rbx
  mov    %r13,%rdi
  xor    %eax,%eax
  call   <new_bzero@plt>
  rdtsc
  mov    %rax,%rsi
  mov    %r13,%rdx
  lea    D21(%rip),%rdi
  xor    %eax,%eax
  sub    %rbx,%rsi
  call   <printf@plt>
  rdtsc
  mov    $0x8000,%esi
  mov    %rax,%rbx
  mov    %r12,%rdi
  xor    %eax,%eax
  call   <asm_bzero@plt>
  rdtsc
  mov    %rax,%rsi
  mov    %r12,%rdx
  lea    D9(%rip),%rdi
  xor    %eax,%eax
  sub    %rbx,%rsi
  call   <printf@plt>
  rdtsc
  mov    $0x8000,%edx
  xor    %esi,%esi
  mov    %rbp,%rdi
  mov    %rax,%rbx
  call   <memset@plt>
  rdtsc
  mov    %rax,%rsi
  mov    %rbp,%rdx
  lea    D28(%rip),%rdi
  xor    %eax,%eax
  sub    %rbx,%rsi
  call   <printf@plt>
  mov    %r15,%rdi
  call   <free@plt>
  mov    %r14,%rdi
  call   <free@plt>
  mov    %r13,%rdi
  call   <free@plt>
  mov    %r12,%rdi
  call   <free@plt>
  mov    %rbp,%rdi
  call   <free@plt>
  add    $0x8,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

tool_calls: name: disassemble_data
arguments: label: D44
datatype: string
name: disassemble_data
arguments: label: D21
datatype: string
name: disassemble_data
arguments: label: D9
datatype: string
name: disassemble_data
arguments: label: D28
datatype: string

tool: D44: old - (%6lu) %s


tool: D21: new - (%6lu) %s


tool: D9: asm - (%6lu) %s


tool: D28: std - (%6lu) %s


assistant: ```c
int main(void) {
  char *block1 = malloc(32768 + 1);
  char *block2 = malloc(32768 + 1);
  char *block3 = malloc(32768 + 1);
  char *block4 = malloc(32768 + 1);
  char *block5 = malloc(32768 + 1);
  memset(block1, 0x26, 32768);
  memset(block2, 0x26, 32768);
  memset(block3, 0x26, 32768);
  memset(block4, 0x26, 32768);
  memset(block5, 0x26, 32768);
  unsigned long t1, t2;
  asm volatile("rdtsc" : "=A"(t1) : :);
  ;
  old_bzero(block1, 32768);
  asm volatile("rdtsc" : "=A"(t2) : :);
  ;
  printf("old - (%6lu) %s\n", t2 - t1, block1);
  asm volatile("rdtsc" : "=A"(t1) : :);
  ;
  old_bzero(block2, 32768);
  asm volatile("rdtsc" : "=A"(t2) : :);
  ;
  printf("old - (%6lu) %s\n", t2 - t1, block2);
  asm volatile("rdtsc" : "=A"(t1) : :);
  ;
  new_bzero(block3, 32768);
  asm volatile("rdtsc" : "=A"(t2) : :);
  ;
  printf("new - (%6lu) %s\n", t2 - t1, block3);
  asm volatile("rdtsc" : "=A"(t1) : :);
  ;
  asm_bzero(block4, 32768);
  asm volatile("rdtsc" : "=A"(t2) : :);
  ;
  printf("asm - (%6lu) %s\n", t2 - t1, block4);
  asm volatile("rdtsc" : "=A"(t1) : :);
  ;
  bzero(block5, 32768);
  asm volatile("rdtsc" : "=A"(t2) : :);
  ;
  printf("std - (%6lu) %s\n", t2 - t1, block5);
  free(block1);
  free(block2);
  free(block3);
  free(block4);
  free(block5);
}
```