user: Please show me the C implementation that matches the assembly code listed below:

```asm
<init_can>:
  endbr64
  push   %rbp
  lea    D203(%rip),%rax
  push   %rbx
  sub    $0x8,%rsp
  cmp    %rax,%rdi
  je     L27
  lea    D174(%rip),%rax
  cmp    %rax,%rdi
  je     L26
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
  nopl   0x0(%rax)
L27:
  lea    D217(%rip),%rdi
  mov    $0xfffc0000,%ebx
  call   <puts@plt>
  lea    D27(%rip),%rdi
  call   <puts@plt>
  mov    $0xfffc001f,%edx
  orb    $0x1,(%rbx)
  mov    $0x32,%edi
  movzbl (%rdx),%eax
  and    $0x78,%eax
  or     $0x7,%eax
  mov    %al,(%rdx)
  mov    $0xfffc0006,%eax
  movb   $0x83,(%rax)
  movb   $0x25,0x1(%rax)
  movb   $0x88,-0x2(%rax)
  movb   $0xff,-0x1(%rax)
  call   <kill_time@plt>
  lea    D206(%rip),%rdi
  call   <puts@plt>
  andb   $0xfe,(%rbx)
  add    $0x8,%rsp
  mov    $0x32,%edi
  pop    %rbx
  pop    %rbp
  jmp    1080 <kill_time@plt>
  nopl   (%rax)
L26:
  lea    D41(%rip),%rbp
  mov    %rsi,%rbx
  mov    %rbp,%rdi
  call   <puts@plt>
  lea    D158(%rip),%rdi
  call   <puts@plt>
  mov    %rbp,%rdi
  lea    D181(%rip),%rbp
  call   <puts@plt>
  lea    D27(%rip),%rdi
  call   <puts@plt>
  mov    $0xfffc0000,%eax
  lea    D54(%rip),%rdi
  movzbl (%rax),%esi
  or     $0x1,%esi
  mov    %sil,(%rax)
  movzbl %sil,%esi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0x32,%edi
  call   <kill_time@plt>
  lea    D95(%rip),%rdi
  call   <puts@plt>
  mov    $0xfffc001f,%eax
  lea    D253(%rip),%rdi
  movzbl (%rax),%esi
  or     $0xffffff87,%esi
  mov    %sil,(%rax)
  movzbl %sil,%esi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0x32,%edi
  call   <kill_time@plt>
  lea    D152(%rip),%rdi
  call   <puts@plt>
  lea    D215(%rip),%rdi
  call   <puts@plt>
  mov    $0xfffc0006,%eax
  mov    $0xa8,%esi
  lea    D49(%rip),%rdi
  movb   $0xa8,(%rax)
  xor    %eax,%eax
  call   <printf@plt>
  lea    D222(%rip),%rdi
  call   <puts@plt>
  lea    D64(%rip),%rdi
  call   <puts@plt>
  mov    $0xfffc0007,%eax
  mov    $0x34,%esi
  lea    D122(%rip),%rdi
  movb   $0x34,(%rax)
  xor    %eax,%eax
  call   <printf@plt>
  lea    D14(%rip),%rdi
  call   <puts@plt>
  mov    $0xfffc0010,%eax
  mov    $0xa6,%esi
  lea    D177(%rip),%rdi
  movb   $0xa6,(%rax)
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0xfffc0011,%eax
  mov    $0xb0,%esi
  lea    D183(%rip),%rdi
  movb   $0xb0,(%rax)
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0xfffc0012,%eax
  mov    $0x12,%esi
  lea    D126(%rip),%rdi
  movb   $0x12,(%rax)
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0xfffc0013,%eax
  mov    $0x30,%esi
  lea    D150(%rip),%rdi
  movb   $0x30,(%rax)
  xor    %eax,%eax
  call   <printf@plt>
  lea    D250(%rip),%rdi
  call   <puts@plt>
  mov    $0xfffc0014,%eax
  xor    %esi,%esi
  mov    %rbp,%rdi
  movb   $0x0,(%rax)
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0xfffc0015,%eax
  xor    %esi,%esi
  mov    %rbp,%rdi
  movb   $0x0,(%rax)
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0xfffc0016,%eax
  xor    %esi,%esi
  mov    %rbp,%rdi
  movb   $0x0,(%rax)
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0xfffc0017,%eax
  xor    %esi,%esi
  lea    D56(%rip),%rdi
  movb   $0x0,(%rax)
  xor    %eax,%eax
  call   <printf@plt>
  lea    D276(%rip),%rax
  cmp    %rax,%rbx
  je     L12
L22:
  lea    D206(%rip),%rdi
  call   <puts@plt>
  mov    $0xfffc0000,%eax
  lea    D32(%rip),%rdi
  movzbl (%rax),%esi
  and    $0xfffffffe,%esi
  mov    %sil,(%rax)
  movzbl %sil,%esi
  xor    %eax,%eax
  call   <printf@plt>
  add    $0x8,%rsp
  mov    $0x32,%edi
  pop    %rbx
  pop    %rbp
  jmp    1080 <kill_time@plt>
  nop
L12:
  xor    %eax,%eax
  call   <self_testing_mode@plt>
  jmp    L22
```

tool_calls: name: unpack_data
arguments: label: D203
type: string
name: unpack_data
arguments: label: D174
type: string
name: unpack_data
arguments: label: D217
type: string
name: unpack_data
arguments: label: D27
type: string
name: unpack_data
arguments: label: D206
type: string
name: unpack_data
arguments: label: D41
type: string
name: unpack_data
arguments: label: D158
type: string
name: unpack_data
arguments: label: D181
type: string
name: unpack_data
arguments: label: D54
type: string
name: unpack_data
arguments: label: D95
type: string
name: unpack_data
arguments: label: D253
type: string
name: unpack_data
arguments: label: D152
type: string
name: unpack_data
arguments: label: D215
type: string
name: unpack_data
arguments: label: D49
type: string
name: unpack_data
arguments: label: D222
type: string
name: unpack_data
arguments: label: D64
type: string
name: unpack_data
arguments: label: D122
type: string
name: unpack_data
arguments: label: D14
type: string
name: unpack_data
arguments: label: D177
type: string
name: unpack_data
arguments: label: D183
type: string
name: unpack_data
arguments: label: D126
type: string
name: unpack_data
arguments: label: D150
type: string
name: unpack_data
arguments: label: D250
type: string
name: unpack_data
arguments: label: D56
type: string
name: unpack_data
arguments: label: D276
type: string
name: unpack_data
arguments: label: D32
type: string

tool: D203: Basic

tool: D174: Extended

tool: D217: ********** Basic Can Mode **********

tool: D27: Switch on Reset Mode

tool: D206: Switch off reset mode

tool: D41: ************************************

tool: D158: ******** Extended Can Mode *********

tool: D181: acceptance mask register: 0x%X 


tool: D54: control_register: 0x%X 



tool: D95: Set clock divider register to extended can mode

tool: D253: clock_divider_register: 0x%X 



tool: D152: Set bus timing register 0

tool: D215: Sync Jump Width = 2  Baudrate Prescaler = 1

tool: D49: bus timing register 0: 0x%X 



tool: D222: Set bus timing register 1

tool: D64: SAM = 0 ---> Single Sampling

tool: D122: bus timing register 1: 0x%X 



tool: D14: Set acceptance code register

tool: D177: acceptance code register 0: 0x%X 


tool: D183: acceptance code register 1: 0x%X 


tool: D126: acceptance code register 2: 0x%X 


tool: D150: acceptance code register 3: 0x%X 



tool: D250: Set acceptance mask register

tool: D56: acceptance mask register: 0x%X 



tool: D276: self_test

tool: D32: control_register 0x%X 



assistant: ```c
void init_can(char *mode, char *self_test) {
  unsigned char r_val;
  if (mode == "Basic") {
    printf("********** Basic Can Mode **********\n");
    printf("Switch on Reset Mode\n");
    r_val = *((unsigned char *)(0xfffc0000 + 0x0000)) | 0x01;
    *((unsigned char *)(0xfffc0000 + 0x0000)) = r_val;
    r_val = *((unsigned char *)(0xfffc0000 + 0x001F)) & 0x7F | 0x07;
    *((unsigned char *)(0xfffc0000 + 0x001F)) = r_val;
    *((unsigned char *)(0xfffc0000 + 0x0006)) = 0x83;
    *((unsigned char *)(0xfffc0000 + 0x0007)) = 0x25;
    *((unsigned char *)(0xfffc0000 + 0x0004)) = 0x88;
    *((unsigned char *)(0xfffc0000 + 0x0005)) = 0xFF;
    kill_time(50);
    printf("Switch off reset mode\n");
    r_val = *((unsigned char *)(0xfffc0000 + 0x0000)) & 0xFE;
    *((unsigned char *)(0xfffc0000 + 0x0000)) = r_val;
    kill_time(50);
  } else if (mode == "Extended") {
    printf("************************************\n");
    printf("******** Extended Can Mode *********\n");
    printf("************************************\n");
    printf("Switch on Reset Mode\n");
    r_val = *((unsigned char *)(0xfffc0000 + 0x0000)) | 0x01;
    *((unsigned char *)(0xfffc0000 + 0x0000)) = r_val;
    printf("control_register: 0x%X \n\n", *((unsigned char *)(0xfffc0000 + 0x0000)));
    kill_time(50);
    printf("Set clock divider register to extended can mode\n");
    r_val = *((unsigned char *)(0xfffc0000 + 0x001F)) | 0x80 | 0x07;
    *((unsigned char *)(0xfffc0000 + 0x001F)) = r_val;
    printf("clock_divider_register: 0x%X \n\n", *((unsigned char *)(0xfffc0000 + 0x001F)));
    kill_time(50);
    printf("Set bus timing register 0\n");
    printf("Sync Jump Width = 2  Baudrate Prescaler = 1\n");
    *((unsigned char *)(0xfffc0000 + 0x0006)) = 0xA8;
    printf("bus timing register 0: 0x%X \n\n", *((unsigned char *)(0xfffc0000 + 0x0006)));
    printf("Set bus timing register 1\n");
    printf("SAM = 0 ---> Single Sampling\n");
    *((unsigned char *)(0xfffc0000 + 0x0007)) = 0x34;
    printf("bus timing register 1: 0x%X \n\n", *((unsigned char *)(0xfffc0000 + 0x0007)));
    printf("Set acceptance code register\n");
    *((unsigned char *)(0xfffc0000 + 0x0010)) = 0xA6;
    printf("acceptance code register 0: 0x%X \n", *((unsigned char *)(0xfffc0000 + 0x0010)));
    *((unsigned char *)(0xfffc0000 + 0x0011)) = 0xB0;
    printf("acceptance code register 1: 0x%X \n", *((unsigned char *)(0xfffc0000 + 0x0011)));
    *((unsigned char *)(0xfffc0000 + 0x0012)) = 0x12;
    printf("acceptance code register 2: 0x%X \n", *((unsigned char *)(0xfffc0000 + 0x0012)));
    *((unsigned char *)(0xfffc0000 + 0x0013)) = 0x30;
    printf("acceptance code register 3: 0x%X \n\n", *((unsigned char *)(0xfffc0000 + 0x0013)));
    printf("Set acceptance mask register\n");
    *((unsigned char *)(0xfffc0000 + 0x0014)) = 0x00;
    printf("acceptance mask register: 0x%X \n", *((unsigned char *)(0xfffc0000 + 0x0014)));
    *((unsigned char *)(0xfffc0000 + 0x0015)) = 0x00;
    printf("acceptance mask register: 0x%X \n", *((unsigned char *)(0xfffc0000 + 0x0015)));
    *((unsigned char *)(0xfffc0000 + 0x0016)) = 0x00;
    printf("acceptance mask register: 0x%X \n", *((unsigned char *)(0xfffc0000 + 0x0016)));
    *((unsigned char *)(0xfffc0000 + 0x0017)) = 0x00;
    printf("acceptance mask register: 0x%X \n\n", *((unsigned char *)(0xfffc0000 + 0x0017)));
    if (self_test == "self_test") {
      self_testing_mode();
    }
    printf("Switch off reset mode\n");
    r_val = *((unsigned char *)(0xfffc0000 + 0x0000)) & 0xFE;
    *((unsigned char *)(0xfffc0000 + 0x0000)) = r_val;
    printf("control_register 0x%X \n\n", *((unsigned char *)(0xfffc0000 + 0x0000)));
    kill_time(50);
  }
}
```