user: 请从给定的汇编指令推导出C源代码：

```asm
<make_constant>:
  endbr64
  push   %rbp
  mov    %rdx,%r9
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x28,%rsp
  mov    %r8,-0x50(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  test   %rsi,%rsi
  sete   %al
  test   %rdx,%rdx
  sete   %dl
  or     %dl,%al
  jne    L67
  mov    %rdi,%r13
  test   %rdi,%rdi
  je     L67
  movsbl %cl,%r14d
  lea    D6(%rip),%r12
  mov    %rsi,%rbx
  xor    %edi,%edi
  mov    %r14d,%r8d
  mov    %r9,%rcx
  mov    %r12,%rdx
  xor    %esi,%esi
  mov    %r9,-0x48(%rbp)
  call   <snprintf@plt>
  mov    %eax,%r15d
  test   %eax,%eax
  jle    L67
  lea    0x1(%rax),%esi
  mov    %rsp,%rdi
  mov    -0x48(%rbp),%r9
  movslq %esi,%rax
  add    $0xf,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffff000,%rax
  sub    %rax,%rdi
  and    $0xfffffffffffffff0,%rcx
  cmp    %rdi,%rsp
  je     L106
L150:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rdi,%rsp
  jne    L150
L106:
  and    $0xfff,%ecx
  sub    %rcx,%rsp
  test   %rcx,%rcx
  je     L11
  orq    $0x0,-0x8(%rsp,%rcx,1)
L11:
  mov    %r14d,%r8d
  mov    %r9,%rcx
  mov    %r12,%rdx
  mov    %rsp,%rdi
  mov    %rsp,-0x48(%rbp)
  call   <snprintf@plt>
  cmp    %r15d,%eax
  jne    L67
  mov    %rbx,%rdi
  call   <EVP_MD_size@plt>
  mov    %rsp,%rcx
  mov    %eax,%r14d
  cltq
  add    $0xf,%rax
  mov    %rax,%rdx
  and    $0xfffffffffffff000,%rax
  sub    %rax,%rcx
  and    $0xfffffffffffffff0,%rdx
  cmp    %rcx,%rsp
  je     L34
L82:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rcx,%rsp
  jne    L82
L34:
  and    $0xfff,%edx
  sub    %rdx,%rsp
  test   %rdx,%rdx
  jne    L62
L70:
  mov    -0x48(%rbp),%r12
  mov    %rsp,%r15
  mov    %r12,%rdi
  call   <strlen@plt>
  xor    %r9d,%r9d
  xor    %ecx,%ecx
  mov    %rbx,%r8
  mov    %eax,%esi
  mov    %rsp,%rdx
  mov    %r12,%rdi
  call   <EVP_Digest@plt>
  test   %eax,%eax
  je     L67
  xor    %r11d,%r11d
  nopw   0x0(%rax,%rax,1)
L104:
  mov    -0x50(%rbp),%rcx
  mov    %r14d,%edx
  mov    %r15,%rsi
  mov    %r13,%rdi
  mov    %r11,-0x48(%rbp)
  call   <attempt@plt>
  xor    %r9d,%r9d
  mov    %rbx,%r8
  xor    %ecx,%ecx
  mov    %r15,%rdx
  mov    %r14d,%esi
  mov    %r15,%rdi
  mov    %rax,%r12
  call   <EVP_Digest@plt>
  mov    -0x48(%rbp),%r11
  add    $0x1,%r11
  cmp    $0x3e7,%r11
  ja     L156
  test   %r12,%r12
  je     L104
  jmp    L156
  nop
L67:
  xor    %r12d,%r12d
L156:
  mov    -0x38(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L15
  lea    -0x28(%rbp),%rsp
  mov    %r12,%rax
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
  nopl   0x0(%rax)
L62:
  orq    $0x0,-0x8(%rsp,%rdx,1)
  jmp    L70
L15:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: tag: D6
type_infered: string

tool: D6: %s point generation seed (%c)

assistant: ```c
EC_POINT *make_constant(const EC_GROUP *grp, const EVP_MD *md, const char *oid, char var, BN_CTX *ctx) {
  EC_POINT *p = NULL;
  int len;
  if (grp == NULL || md == NULL || oid == NULL)
    return NULL;
  len = snprintf(NULL, 0, "%s point generation seed (%c)", oid, var);
  if (len < 1)
    return NULL;
  char seed[len + 1];
  if (snprintf(seed, sizeof(seed), "%s point generation seed (%c)", oid, var) != len)
    return NULL;
  uint8_t digest[EVP_MD_size(md)];
  if (!EVP_Digest(seed, strlen(seed), digest, NULL, md, NULL))
    return NULL;
  for (size_t i = 0; i < 1000 && p == NULL; i++) {
    p = attempt(grp, digest, sizeof(digest), ctx);
    EVP_Digest(digest, sizeof(digest), digest, NULL, md, NULL);
  }
  return p;
}
```