// File: /workspace/github_c_makefile_star2_O2/genometools[P]genometools/src/external/sqlite-3.33.0/sqlite3.c
// Function: sqlite3_backup_init
SQLITE_API sqlite3_backup *sqlite3_backup_init(
  sqlite3* pDestDb,                     /* Database to write to */
  const char *zDestDb,                  /* Name of database within pDestDb */
  sqlite3* pSrcDb,                      /* Database connection to read from */
  const char *zSrcDb                    /* Name of database within pSrcDb */
){
  sqlite3_backup *p;                    /* Value to return */

#ifdef SQLITE_ENABLE_API_ARMOR
  if( !sqlite3SafetyCheckOk(pSrcDb)||!sqlite3SafetyCheckOk(pDestDb) ){
    (void)SQLITE_MISUSE_BKPT;
    return 0;
  }
#endif

  /* Lock the source database handle. The destination database
  ** handle is not locked in this routine, but it is locked in
  ** sqlite3_backup_step(). The user is required to ensure that no
  ** other thread accesses the destination handle for the duration
  ** of the backup operation.  Any attempt to use the destination
  ** database connection while a backup is in progress may cause
  ** a malfunction or a deadlock.
  */
  sqlite3_mutex_enter(pSrcDb->mutex);
  sqlite3_mutex_enter(pDestDb->mutex);

  if( pSrcDb==pDestDb ){
    sqlite3ErrorWithMsg(
        pDestDb, SQLITE_ERROR, "source and destination must be distinct"
    );
    p = 0;
  }else {
    /* Allocate space for a new sqlite3_backup object...
    ** EVIDENCE-OF: R-64852-21591 The sqlite3_backup object is created by a
    ** call to sqlite3_backup_init() and is destroyed by a call to
    ** sqlite3_backup_finish(). */
    p = (sqlite3_backup *)sqlite3MallocZero(sizeof(sqlite3_backup));
    if( !p ){
      sqlite3Error(pDestDb, SQLITE_NOMEM_BKPT);
    }
  }

  /* If the allocation succeeded, populate the new object. */
  if( p ){
    p->pSrc = findBtree(pDestDb, pSrcDb, zSrcDb);
    p->pDest = findBtree(pDestDb, pDestDb, zDestDb);
    p->pDestDb = pDestDb;
    p->pSrcDb = pSrcDb;
    p->iNext = 1;
    p->isAttached = 0;

    if( 0==p->pSrc || 0==p->pDest
     || checkReadTransaction(pDestDb, p->pDest)!=SQLITE_OK
     ){
      /* One (or both) of the named databases did not exist or an OOM
      ** error was hit. Or there is a transaction open on the destination
      ** database. The error has already been written into the pDestDb
      ** handle. All that is left to do here is free the sqlite3_backup
      ** structure.  */
      sqlite3_free(p);
      p = 0;
    }
  }
  if( p ){
    p->pSrc->nBackup++;
  }

  sqlite3_mutex_leave(pDestDb->mutex);
  sqlite3_mutex_leave(pSrcDb->mutex);
  return p;
}

// Assembly:
pushq %r15
pushq %r14
pushq %r13
pushq %r12
pushq %rbx
movq %rdi, %r14
cmpq %rdi, %rdx
je 0x2226bc
movq %rcx, %r13
movq %rdx, %r15
movq %rsi, %r12
pushq $0x48
popq %rdi
callq 0x2227e2
testq %rax, %rax
je 0x2226d4
movq %rax, %rbx
movq %r14, %rdi
movq %r15, %rsi
movq %r13, %rdx
callq 0x22281a
movq %rax, 0x28(%rbx)
movq %r14, %rdi
movq %r14, %rsi
movq %r12, %rdx
callq 0x22281a
movq %rax, 0x8(%rbx)
movq %r14, (%rbx)
movq %r15, 0x20(%rbx)
movl $0x1, 0x18(%rbx)
andl $0x0, 0x3c(%rbx)
movq 0x28(%rbx), %rcx
testq %rcx, %rcx
sete %dl
testq %rax, %rax
sete %sil
orb %dl, %sil
jne 0x2226b2
cmpb $0x0, 0x10(%rax)
je 0x2226ee
leaq 0x153aa0(%rip), %rdx    # 0x376145
pushq $0x1
popq %rsi
movq %r14, %rdi
xorl %eax, %eax
callq 0x2226f3
movq %rbx, %rdi
callq 0x21f7f9
jmp 0x2226df
leaq 0x15362f(%rip), %rdx    # 0x375cf2
xorl %ebx, %ebx
pushq $0x1
popq %rsi
movq %r14, %rdi
xorl %eax, %eax
callq 0x2226f3
jmp 0x2226e1
pushq $0x7
popq %rsi
movq %r14, %rdi
callq 0x222800
xorl %ebx, %ebx
movq %rbx, %rax
popq %rbx
popq %r12
popq %r13
popq %r14
popq %r15
retq
incl 0x18(%rcx)
jmp 0x2226e1