user: What would the C source look like for the assembly code provided here?

```asm
<main>:
  endbr64
  push   %r13
  lea    D4(%rip),%r13
  push   %r12
  lea    D13(%rip),%r12
  push   %rbp
  push   %rbx
  xor    %ebx,%ebx
  sub    $0x18,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x4(%rsp),%rbp
  movl   $0x0,0x4(%rsp)
  jmp    L255
  nopl   (%rax)
L159:
  call   <sync_instr@plt>
L239:
  add    $0x4,%ebx
L255:
  mov    %rbp,%rdi
  call   <readop@plt>
  test   %rax,%rax
  je     L10
  mov    0x4(%rsp),%esi
  mov    %r13,%rdi
  call   <printf@plt>
  mov    %ebx,%esi
  mov    %r12,%rdi
  call   <printf@plt>
  mov    0x4(%rsp),%edi
  call   <is_sync_primitive@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  jne    L159
  call   <is_misc@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  je     L317
  call   <misc_instr@plt>
  jmp    L239
  cs nopw 0x0(%rax,%rax,1)
L317:
  call   <is_multi@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  je     L48
  call   <multi_instr@plt>
  jmp    L239
  nopl   (%rax)
L48:
  call   <is_halfword_multi@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  je     L35
  call   <halfword_multi_instr@plt>
  jmp    L239
L35:
  call   <is_dp_reg@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  je     L289
  call   <dp_reg_instr@plt>
  jmp    L239
L190:
  mov    0x4(%rsp),%esi
  lea    D17(%rip),%rdi
  call   <printf@plt>
  mov    $0x1,%eax
  nopl   (%rax)
L10:
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L46
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L289:
  call   <is_dp_rsr@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  je     L260
  call   <dp_rsr_instr@plt>
  jmp    L239
L260:
  call   <is_dp_imm@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  jne    L134
  call   <is_dp_other@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  je     L215
  call   <dp_other_instr@plt>
  jmp    L239
L134:
  call   <dp_imm_instr@plt>
  jmp    L239
L215:
  call   <is_branch@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  jne    L107
  call   <is_dt_single@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  je     L132
  call   <dt_single_instr@plt>
  jmp    L239
L107:
  call   <branch_instr@plt>
  jmp    L239
L132:
  call   <is_dt_block@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  je     L90
  call   <dt_block_instr@plt>
  jmp    L239
L90:
  call   <is_dt_extra@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  je     L71
  call   <dt_extra_instr@plt>
  jmp    L239
L71:
  call   <is_dt_coproc@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  je     L285
  call   <dt_coproc_instr@plt>
  jmp    L239
L285:
  call   <is_rt_coproc@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  je     L199
  call   <rt_coproc_instr@plt>
  jmp    L239
L199:
  call   <is_dataop_coproc@plt>
  mov    0x4(%rsp),%edi
  test   %rax,%rax
  je     L162
  call   <dataop_coproc_instr@plt>
  jmp    L239
L46:
  call   <__stack_chk_fail@plt>
L162:
  call   <is_sw_interrupt@plt>
  test   %rax,%rax
  je     L190
  mov    0x4(%rsp),%edi
  call   <sw_interrupt_instr@plt>
  jmp    L239
```

tool_calls: name: retrieve_data
arguments: data_label: D4
data_type: string
name: retrieve_data
arguments: data_label: D13
data_type: string
name: retrieve_data
arguments: data_label: D17
data_type: string

tool: D4: op: 0x%.8X


tool: D13: 0x%.8X:	

tool: D17: Unrecognized instruction 0x%x


assistant: ```c
int main() {
  uint32_t op = 0;
  uint32_t count = 0;
  while (readop(&op)) {
    printf("op: 0x%.8X\n", op);
    printf("0x%.8X:\t", count);
    if (is_sync_primitive(op)) {
      sync_instr(op);
    } else if (is_misc(op)) {
      misc_instr(op);
    } else if (is_multi(op)) {
      multi_instr(op);
    } else if (is_halfword_multi(op)) {
      halfword_multi_instr(op);
    } else if (is_dp_reg(op)) {
      dp_reg_instr(op);
    } else if (is_dp_rsr(op)) {
      dp_rsr_instr(op);
    } else if (is_dp_imm(op)) {
      dp_imm_instr(op);
    } else if (is_dp_other(op)) {
      dp_other_instr(op);
    } else if (is_branch(op)) {
      branch_instr(op);
    } else if (is_dt_single(op)) {
      dt_single_instr(op);
    } else if (is_dt_block(op)) {
      dt_block_instr(op);
    } else if (is_dt_extra(op)) {
      dt_extra_instr(op);
    } else if (is_dt_coproc(op)) {
      dt_coproc_instr(op);
    } else if (is_rt_coproc(op)) {
      rt_coproc_instr(op);
    } else if (is_dataop_coproc(op)) {
      dataop_coproc_instr(op);
    } else if (is_sw_interrupt(op)) {
      sw_interrupt_instr(op);
    } else {
      printf("Unrecognized instruction 0x%x\n", op);
      return 1;
    }
    count += 4;
  }
  return 0;
}
```