user: 请从给定的汇编指令推导出C源代码：

```asm
<CANInit>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <CANBaseValid@plt>
  test   %eax,%eax
  jne    L55
  mov    $0x1d9,%esi
  lea    D0(%rip),%rax
  mov    %rax,%rdi
  call   <AssertFailure@plt>
L55:
  mov    -0x18(%rbp),%rax
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <CANRegWrite@plt>
  nop
L6:
  mov    -0x18(%rbp),%rax
  add    $0x20,%rax
  mov    %rax,%rdi
  call   <CANRegRead@plt>
  and    $0x8000,%eax
  test   %eax,%eax
  jne    L6
  mov    -0x18(%rbp),%rax
  add    $0x24,%rax
  mov    $0xb0,%esi
  mov    %rax,%rdi
  call   <CANRegWrite@plt>
  mov    -0x18(%rbp),%rax
  add    $0x34,%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <CANRegWrite@plt>
  mov    -0x18(%rbp),%rax
  add    $0x38,%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <CANRegWrite@plt>
  movl   $0x1,-0x4(%rbp)
  jmp    L17
L7:
  nop
L30:
  mov    -0x18(%rbp),%rax
  add    $0x20,%rax
  mov    %rax,%rdi
  call   <CANRegRead@plt>
  and    $0x8000,%eax
  test   %eax,%eax
  jne    L30
  mov    -0x18(%rbp),%rax
  lea    0x20(%rax),%rdx
  mov    -0x4(%rbp),%eax
  mov    %eax,%esi
  mov    %rdx,%rdi
  call   <CANRegWrite@plt>
  addl   $0x1,-0x4(%rbp)
L17:
  cmpl   $0x20,-0x4(%rbp)
  jle    L7
  mov    -0x18(%rbp),%rax
  add    $0x24,%rax
  mov    $0xc,%esi
  mov    %rax,%rdi
  call   <CANRegWrite@plt>
  movl   $0x1,-0x4(%rbp)
  jmp    L50
L2:
  nop
L1:
  mov    -0x18(%rbp),%rax
  add    $0x20,%rax
  mov    %rax,%rdi
  call   <CANRegRead@plt>
  and    $0x8000,%eax
  test   %eax,%eax
  jne    L1
  mov    -0x18(%rbp),%rax
  lea    0x20(%rax),%rdx
  mov    -0x4(%rbp),%eax
  mov    %eax,%esi
  mov    %rdx,%rdi
  call   <CANRegWrite@plt>
  addl   $0x1,-0x4(%rbp)
L50:
  cmpl   $0x20,-0x4(%rbp)
  jle    L2
  mov    -0x18(%rbp),%rax
  add    $0x4,%rax
  mov    %rax,%rdi
  call   <CANRegRead@plt>
  nop
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D0
datatype: string

tool: D0: /scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/AmesianX/OpenBLT/refs/heads/master/Target/Demo/ARMCM3_LM3S_EK_LM3S8962_Crossworks/Boot/lib/driverlib/canlib.c

assistant: ```c
void CANInit(unsigned long ulBase) {
  int iMsg;
  {
    if (!(CANBaseValid(ulBase))) {
      AssertFailure("/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/AmesianX/OpenBLT/refs/heads/master/Target/Demo/ARMCM3_LM3S_EK_LM3S8962_Crossworks/Boot/lib/driverlib/canlib.c", 473);
    }
  };
  CANRegWrite(ulBase + 0x00000000, 0x00000001);
  while (CANRegRead(ulBase + 0x00000020) & 0x00008000) {
  }
  CANRegWrite(ulBase + 0x00000024, 0x00000080 | 0x00000020 | 0x00000010);
  CANRegWrite(ulBase + 0x00000034, 0);
  CANRegWrite(ulBase + 0x00000038, 0);
  for (iMsg = 1; iMsg <= 32; iMsg++) {
    while (CANRegRead(ulBase + 0x00000020) & 0x00008000) {
    }
    CANRegWrite(ulBase + 0x00000020, iMsg);
  }
  CANRegWrite(ulBase + 0x00000024, 0x00000004 | 0x00000008);
  for (iMsg = 1; iMsg <= 32; iMsg++) {
    while (CANRegRead(ulBase + 0x00000020) & 0x00008000) {
    }
    CANRegWrite(ulBase + 0x00000020, iMsg);
  }
  CANRegRead(ulBase + 0x00000004);
}
```