user: What is the c source code of the assembly code below?

```asm
<md5>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x258,%rsp
  mov    %rdi,0x18(%rsp)
  mov    %rsi,0x10(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x248(%rsp)
  xor    %eax,%eax
  movl   $0x7,0x40(%rsp)
  movl   $0xc,0x44(%rsp)
  movl   $0x11,0x48(%rsp)
  movl   $0x16,0x4c(%rsp)
  movl   $0x7,0x50(%rsp)
  movl   $0xc,0x54(%rsp)
  movl   $0x11,0x58(%rsp)
  movl   $0x16,0x5c(%rsp)
  movl   $0x7,0x60(%rsp)
  movl   $0xc,0x64(%rsp)
  movl   $0x11,0x68(%rsp)
  movl   $0x16,0x6c(%rsp)
  movl   $0x7,0x70(%rsp)
  movl   $0xc,0x74(%rsp)
  movl   $0x11,0x78(%rsp)
  movl   $0x16,0x7c(%rsp)
  movl   $0x5,0x80(%rsp)
  movl   $0x9,0x84(%rsp)
  movl   $0xe,0x88(%rsp)
  movl   $0x14,0x8c(%rsp)
  movl   $0x5,0x90(%rsp)
  movl   $0x9,0x94(%rsp)
  movl   $0xe,0x98(%rsp)
  movl   $0x14,0x9c(%rsp)
  movl   $0x5,0xa0(%rsp)
  movl   $0x9,0xa4(%rsp)
  movl   $0xe,0xa8(%rsp)
  movl   $0x14,0xac(%rsp)
  movl   $0x5,0xb0(%rsp)
  movl   $0x9,0xb4(%rsp)
  movl   $0xe,0xb8(%rsp)
  movl   $0x14,0xbc(%rsp)
  movl   $0x4,0xc0(%rsp)
  movl   $0xb,0xc4(%rsp)
  movl   $0x10,0xc8(%rsp)
  movl   $0x17,0xcc(%rsp)
  movl   $0x4,0xd0(%rsp)
  movl   $0xb,0xd4(%rsp)
  movl   $0x10,0xd8(%rsp)
  movl   $0x17,0xdc(%rsp)
  movl   $0x4,0xe0(%rsp)
  movl   $0xb,0xe4(%rsp)
  movl   $0x10,0xe8(%rsp)
  movl   $0x17,0xec(%rsp)
  movl   $0x4,0xf0(%rsp)
  movl   $0xb,0xf4(%rsp)
  movl   $0x10,0xf8(%rsp)
  movl   $0x17,0xfc(%rsp)
  movl   $0x6,0x100(%rsp)
  movl   $0xa,0x104(%rsp)
  movl   $0xf,0x108(%rsp)
  movl   $0x15,0x10c(%rsp)
  movl   $0x6,0x110(%rsp)
  movl   $0xa,0x114(%rsp)
  movl   $0xf,0x118(%rsp)
  movl   $0x15,0x11c(%rsp)
  movl   $0x6,0x120(%rsp)
  movl   $0xa,0x124(%rsp)
  movl   $0xf,0x128(%rsp)
  movl   $0x15,0x12c(%rsp)
  movl   $0x6,0x130(%rsp)
  movl   $0xa,0x134(%rsp)
  movl   $0xf,0x138(%rsp)
  movl   $0x15,0x13c(%rsp)
  movl   $0xd76aa478,0x140(%rsp)
  movl   $0xe8c7b756,0x144(%rsp)
  movl   $0x242070db,0x148(%rsp)
  movl   $0xc1bdceee,0x14c(%rsp)
  movl   $0xf57c0faf,0x150(%rsp)
  movl   $0x4787c62a,0x154(%rsp)
  movl   $0xa8304613,0x158(%rsp)
  movl   $0xfd469501,0x15c(%rsp)
  movl   $0x698098d8,0x160(%rsp)
  movl   $0x8b44f7af,0x164(%rsp)
  movl   $0xffff5bb1,0x168(%rsp)
  movl   $0x895cd7be,0x16c(%rsp)
  movl   $0x6b901122,0x170(%rsp)
  movl   $0xfd987193,0x174(%rsp)
  movl   $0xa679438e,0x178(%rsp)
  movl   $0x49b40821,0x17c(%rsp)
  movl   $0xf61e2562,0x180(%rsp)
  movl   $0xc040b340,0x184(%rsp)
  movl   $0x265e5a51,0x188(%rsp)
  movl   $0xe9b6c7aa,0x18c(%rsp)
  movl   $0xd62f105d,0x190(%rsp)
  movl   $0x2441453,0x194(%rsp)
  movl   $0xd8a1e681,0x198(%rsp)
  movl   $0xe7d3fbc8,0x19c(%rsp)
  movl   $0x21e1cde6,0x1a0(%rsp)
  movl   $0xc33707d6,0x1a4(%rsp)
  movl   $0xf4d50d87,0x1a8(%rsp)
  movl   $0x455a14ed,0x1ac(%rsp)
  movl   $0xa9e3e905,0x1b0(%rsp)
  movl   $0xfcefa3f8,0x1b4(%rsp)
  movl   $0x676f02d9,0x1b8(%rsp)
  movl   $0x8d2a4c8a,0x1bc(%rsp)
  movl   $0xfffa3942,0x1c0(%rsp)
  movl   $0x8771f681,0x1c4(%rsp)
  movl   $0x6d9d6122,0x1c8(%rsp)
  movl   $0xfde5380c,0x1cc(%rsp)
  movl   $0xa4beea44,0x1d0(%rsp)
  movl   $0x4bdecfa9,0x1d4(%rsp)
  movl   $0xf6bb4b60,0x1d8(%rsp)
  movl   $0xbebfbc70,0x1dc(%rsp)
  movl   $0x289b7ec6,0x1e0(%rsp)
  movl   $0xeaa127fa,0x1e4(%rsp)
  movl   $0xd4ef3085,0x1e8(%rsp)
  movl   $0x4881d05,0x1ec(%rsp)
  movl   $0xd9d4d039,0x1f0(%rsp)
  movl   $0xe6db99e5,0x1f4(%rsp)
  movl   $0x1fa27cf8,0x1f8(%rsp)
  movl   $0xc4ac5665,0x1fc(%rsp)
  movl   $0xf4292244,0x200(%rsp)
  movl   $0x432aff97,0x204(%rsp)
  movl   $0xab9423a7,0x208(%rsp)
  movl   $0xfc93a039,0x20c(%rsp)
  movl   $0x655b59c3,0x210(%rsp)
  movl   $0x8f0ccc92,0x214(%rsp)
  movl   $0xffeff47d,0x218(%rsp)
  movl   $0x85845dd1,0x21c(%rsp)
  movl   $0x6fa87e4f,0x220(%rsp)
  movl   $0xfe2ce6e0,0x224(%rsp)
  movl   $0xa3014314,0x228(%rsp)
  movl   $0x4e0811a1,0x22c(%rsp)
  movl   $0xf7537e82,0x230(%rsp)
  movl   $0xbd3af235,0x234(%rsp)
  movl   $0x2ad7d2bb,0x238(%rsp)
  movl   $0xeb86d391,0x23c(%rsp)
  mov    $0x67452301,%r15d
  mov    $0xefcdab89,%r14d
  mov    $0x98badcfe,%r13d
  mov    $0x10325476,%r12d
  mov    %esi,%eax
  shl    $0x3,%eax
  mov    %eax,0x20(%rsp)
  lea    0x1(%rax),%ebp
  sar    $0x1f,%eax
  mov    %eax,%edx
  shr    $0x17,%edx
  lea    0x0(%rbp,%rdx,1),%eax
  and    $0x1ff,%eax
  sub    %edx,%eax
  cmp    $0x1c0,%eax
  je     L108
L34:
  add    $0x1,%ebp
  mov    %ebp,%edx
  sar    $0x1f,%edx
  shr    $0x17,%edx
  lea    0x0(%rbp,%rdx,1),%eax
  and    $0x1ff,%eax
  sub    %edx,%eax
  cmp    $0x1c0,%eax
  jne    L34
L108:
  lea    0x7(%rbp),%eax
  test   %ebp,%ebp
  cmovns %ebp,%eax
  sar    $0x3,%eax
  mov    %eax,0xc(%rsp)
  lea    0x40(%rax),%edi
  mov    $0x1,%esi
  call   <calloc@plt>
  mov    %rax,%rbx
  mov    0x10(%rsp),%rdx
  mov    0x18(%rsp),%rsi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <memcpy@plt>
  mov    0x10(%rsp),%rdi
  movl   $0x80,(%rbx,%rdi,4)
  mov    0x20(%rsp),%edi
  mov    %edi,0x3c(%rsp)
  lea    0x3c(%rsp),%rsi
  movslq 0xc(%rsp),%rax
  lea    (%rbx,%rax,4),%rdi
  mov    $0x4,%edx
  mov    $0x0,%eax
  call   <memcpy@plt>
  cmp    $0x7,%ebp
  jle    L117
  mov    $0x0,%r10d
  mov    $0x10325476,%r12d
  mov    $0x98badcfe,%r13d
  mov    $0xefcdab89,%r14d
  mov    $0x67452301,%r15d
  mov    $0x20,%r11d
  jmp    L120
L12:
  mov    %r8d,%edx
  xor    %r9d,%edx
  and    %edi,%edx
  xor    %r9d,%edx
  jmp    L122
L105:
  cmp    $0x2f,%esi
  jg     L31
  mov    %edi,%edx
  xor    %r8d,%edx
  xor    %r9d,%edx
  lea    0x5(%rsi,%rsi,2),%ecx
  mov    %ecx,%ebp
  sar    $0x1f,%ebp
  shr    $0x1c,%ebp
  add    %ebp,%ecx
  and    $0xf,%ecx
  sub    %ebp,%ecx
L122:
  movslq %ecx,%rcx
  add    %r10,%rcx
  add    %eax,%edx
  add    0x140(%rsp,%rsi,4),%edx
  add    (%rbx,%rcx,4),%edx
  mov    %r11d,%ecx
  sub    0x40(%rsp,%rsi,4),%ecx
  mov    %edx,%eax
  sar    %cl,%eax
  movzbl 0x40(%rsp,%rsi,4),%ecx
  shl    %cl,%edx
  or     %edx,%eax
  lea    (%rax,%rdi,1),%edx
  add    $0x1,%rsi
  mov    %r9d,%eax
  cmp    $0x40,%rsi
  je     L11
  mov    %r8d,%r9d
  mov    %edi,%r8d
  mov    %edx,%edi
L107:
  mov    %esi,%ecx
  cmp    $0xf,%esi
  jle    L12
  cmp    $0x1f,%esi
  jg     L105
  mov    %edi,%edx
  xor    %r8d,%edx
  and    %r9d,%edx
  xor    %r8d,%edx
  lea    0x1(%rsi,%rsi,4),%ecx
  mov    %ecx,%ebp
  sar    $0x1f,%ebp
  shr    $0x1c,%ebp
  add    %ebp,%ecx
  and    $0xf,%ecx
  sub    %ebp,%ecx
  jmp    L122
L31:
  mov    %r9d,%edx
  not    %edx
  or     %edi,%edx
  xor    %r8d,%edx
  lea    0x0(,%rsi,8),%ecx
  sub    %esi,%ecx
  mov    %ecx,%ebp
  sar    $0x1f,%ebp
  shr    $0x1c,%ebp
  add    %ebp,%ecx
  and    $0xf,%ecx
  sub    %ebp,%ecx
  jmp    L122
L11:
  add    %r9d,%r15d
  add    %edx,%r14d
  add    %edi,%r13d
  add    %r8d,%r12d
  add    $0x40,%r10
  cmp    %r10d,0xc(%rsp)
  jle    L117
L120:
  mov    %r12d,%r9d
  mov    %r13d,%r8d
  mov    %r14d,%edi
  mov    %r15d,%eax
  mov    $0x0,%esi
  jmp    L107
L117:
  mov    %rbx,%rdi
  call   <free@plt>
  mov    $0x1,%esi
  mov    $0x21,%edi
  call   <calloc@plt>
  mov    %rax,%rbx
  mov    %r15d,0x2c(%rsp)
  mov    %r15d,0x28(%rsp)
  mov    %r15d,0x24(%rsp)
  mov    0x38(%rsp),%r9d
  mov    0x30(%rsp),%r8d
  mov    %r15d,%ecx
  mov    %r15d,%edx
  lea    D3(%rip),%rbp
  mov    %rbp,%rsi
  mov    %rax,%rdi
  call   <sprintf@plt>
  mov    %r14d,0x2c(%rsp)
  mov    %r14d,0x28(%rsp)
  mov    %r14d,0x24(%rsp)
  lea    0x8(%rbx),%rdi
  mov    0x38(%rsp),%r9d
  mov    0x30(%rsp),%r8d
  mov    %r14d,%ecx
  mov    %r14d,%edx
  mov    %rbp,%rsi
  call   <sprintf@plt>
  mov    %r13d,0x2c(%rsp)
  mov    %r13d,0x28(%rsp)
  mov    %r13d,0x24(%rsp)
  lea    0x10(%rbx),%rdi
  mov    0x38(%rsp),%r9d
  mov    0x30(%rsp),%r8d
  mov    %r13d,%ecx
  mov    %r13d,%edx
  mov    %rbp,%rsi
  call   <sprintf@plt>
  mov    %r12d,0x2c(%rsp)
  mov    %r12d,0x28(%rsp)
  mov    %r12d,0x24(%rsp)
  lea    0x18(%rbx),%rdi
  mov    0x38(%rsp),%r9d
  mov    0x30(%rsp),%r8d
  mov    %r12d,%ecx
  mov    %r12d,%edx
  mov    %rbp,%rsi
  call   <sprintf@plt>
  movb   $0x0,0x20(%rbx)
  mov    0x248(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L65
  mov    %rbx,%rax
  add    $0x258,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L65:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: label: D3
datatype: string

tool: D3: %2.2x%2.2x%2.2x%2.2x

assistant: ```c
char *md5(char *initial_msg, size_t initial_len) {
  uint8_t *msg = NULL;
  uint32_t r[] = {7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21};
  uint32_t k[] = {0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee, 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501, 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be, 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821, 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa, 0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8, 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed, 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a, 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c, 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70, 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05, 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665, 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039, 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1, 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1, 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391};
  uint32_t h0 = 0x67452301;
  uint32_t h1 = 0xefcdab89;
  uint32_t h2 = 0x98badcfe;
  uint32_t h3 = 0x10325476;
  int new_len;
  for (new_len = initial_len * 8 + 1; new_len % 512 != 448; new_len++)
    ;
  new_len /= 8;
  msg = calloc(new_len + 64, 1);
  memcpy(msg, initial_msg, initial_len);
  msg[initial_len] = 128;
  uint32_t bits_len = 8 * initial_len;
  memcpy(msg + new_len, &bits_len, 4);
  int offset;
  for (offset = 0; offset < new_len; offset += (512 / 8)) {
    uint32_t *w = (uint32_t *)(msg + offset);
    uint32_t a = h0;
    uint32_t b = h1;
    uint32_t c = h2;
    uint32_t d = h3;
    uint32_t i;
    for (i = 0; i < 64; i++) {
      uint32_t f, g;
      if (i < 16) {
        f = (b & c) | ((~b) & d);
        g = i;
      } else if (i < 32) {
        f = (d & b) | ((~d) & c);
        g = (5 * i + 1) % 16;
      } else if (i < 48) {
        f = b ^ c ^ d;
        g = (3 * i + 5) % 16;
      } else {
        f = c ^ (b | (~d));
        g = (7 * i) % 16;
      }
      uint32_t temp = d;
      d = c;
      c = b;
      b = b + ((((a + f + k[i] + w[g])) << (r[i])) | (((a + f + k[i] + w[g])) >> (32 - (r[i]))));
      a = temp;
    }
    h0 += a;
    h1 += b;
    h2 += c;
    h3 += d;
  }
  free(msg);
  char *output = calloc(33, 1);
  uint8_t *p = (uint8_t *)&h0;
  sprintf(output, "%2.2x%2.2x%2.2x%2.2x", p[0], p[1], p[2], p[3]);
  p = (uint8_t *)&h1;
  sprintf(&output[8], "%2.2x%2.2x%2.2x%2.2x", p[0], p[1], p[2], p[3]);
  p = (uint8_t *)&h2;
  sprintf(&output[16], "%2.2x%2.2x%2.2x%2.2x", p[0], p[1], p[2], p[3]);
  p = (uint8_t *)&h3;
  sprintf(&output[24], "%2.2x%2.2x%2.2x%2.2x", p[0], p[1], p[2], p[3]);
  output[32] = '\0';
  return output;
}
```