// File: /workspace/github_c_makefile_star2_O2/barabo[P]advanced-shell-history/src/sqlite3.c
// Function: defragmentPage
static int defragmentPage(MemPage *pPage){
  int i;                     /* Loop counter */
  int pc;                    /* Address of a i-th cell */
  int hdr;                   /* Offset to the page header */
  int size;                  /* Size of a cell */
  int usableSize;            /* Number of usable bytes on a page */
  int cellOffset;            /* Offset to the cell pointer array */
  int cbrk;                  /* Offset to the cell content area */
  int nCell;                 /* Number of cells on the page */
  unsigned char *data;       /* The page data */
  unsigned char *temp;       /* Temp area for cell content */
  int iCellFirst;            /* First allowable cell index */
  int iCellLast;             /* Last possible cell index */


  assert( sqlite3PagerIswriteable(pPage->pDbPage) );
  assert( pPage->pBt!=0 );
  assert( pPage->pBt->usableSize <= SQLITE_MAX_PAGE_SIZE );
  assert( pPage->nOverflow==0 );
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  temp = sqlite3PagerTempSpace(pPage->pBt->pPager);
  data = pPage->aData;
  hdr = pPage->hdrOffset;
  cellOffset = pPage->cellOffset;
  nCell = pPage->nCell;
  assert( nCell==get2byte(&data[hdr+3]) );
  usableSize = pPage->pBt->usableSize;
  cbrk = get2byte(&data[hdr+5]);
  memcpy(&temp[cbrk], &data[cbrk], usableSize - cbrk);
  cbrk = usableSize;
  iCellFirst = cellOffset + 2*nCell;
  iCellLast = usableSize - 4;
  for(i=0; i<nCell; i++){
    u8 *pAddr;     /* The i-th cell pointer */
    pAddr = &data[cellOffset + i*2];
    pc = get2byte(pAddr);
    testcase( pc==iCellFirst );
    testcase( pc==iCellLast );
#if !defined(SQLITE_ENABLE_OVERSIZE_CELL_CHECK)
    /* These conditions have already been verified in btreeInitPage()
    ** if SQLITE_ENABLE_OVERSIZE_CELL_CHECK is defined 
    */
    if( pc<iCellFirst || pc>iCellLast ){
      return SQLITE_CORRUPT_BKPT;
    }
#endif
    assert( pc>=iCellFirst && pc<=iCellLast );
    size = cellSizePtr(pPage, &temp[pc]);
    cbrk -= size;
#if defined(SQLITE_ENABLE_OVERSIZE_CELL_CHECK)
    if( cbrk<iCellFirst ){
      return SQLITE_CORRUPT_BKPT;
    }
#else
    if( cbrk<iCellFirst || pc+size>usableSize ){
      return SQLITE_CORRUPT_BKPT;
    }
#endif
    assert( cbrk+size<=usableSize && cbrk>=iCellFirst );
    testcase( cbrk+size==usableSize );
    testcase( pc+size==usableSize );
    memcpy(&data[cbrk], &temp[pc], size);
    put2byte(pAddr, cbrk);
  }
  assert( cbrk>=iCellFirst );
  put2byte(&data[hdr+5], cbrk);
  data[hdr+1] = 0;
  data[hdr+2] = 0;
  data[hdr+7] = 0;
  memset(&data[iCellFirst], 0, cbrk-iCellFirst);
  assert( sqlite3PagerIswriteable(pPage->pDbPage) );
  if( cbrk-iCellFirst!=pPage->nFree ){
    return SQLITE_CORRUPT_BKPT;
  }
  return SQLITE_OK;
}

// Assembly:
pushq %rbp
movq %rsp, %rbp
pushq %r15
pushq %r14
pushq %r13
pushq %r12
pushq %rbx
subq $0x38, %rsp
movq 0x48(%rdi), %rax
movq 0x50(%rdi), %r14
movq (%rax), %rcx
movq 0x108(%rcx), %rdx
movzbl 0x5(%rdi), %ecx
movzwl 0xc(%rdi), %ebx
movq %rdi, -0x40(%rbp)
movzwl 0x10(%rdi), %r15d
movl 0x34(%rax), %r12d
movq %rcx, -0x48(%rbp)
movzwl 0x5(%r14,%rcx), %eax
rolw $0x8, %ax
movzwl %ax, %eax
movq %rdx, -0x58(%rbp)
leaq (%rdx,%rax), %rdi
leaq (%r14,%rax), %rsi
movl %r12d, %ecx
subl %eax, %ecx
movslq %ecx, %rdx
callq 0x82c0
movq %r15, -0x60(%rbp)
leal (%rbx,%r15,2), %eax
movl %eax, -0x2c(%rbp)
leal -0x4(%r12), %eax
movl %eax, -0x30(%rbp)
movq %r14, -0x38(%rbp)
addq %r14, %rbx
incq %rbx
xorl %r13d, %r13d
movq %r12, -0x50(%rbp)
movl %r12d, %r15d
cmpq %r13, -0x60(%rbp)
je 0x2e087
movzwl -0x1(%rbx,%r13,2), %eax
rolw $0x8, %ax
movzwl %ax, %r12d
movl $0xc620, %edi           # imm = 0xC620
cmpl -0x2c(%rbp), %r12d
jb 0x2e0d3
cmpl -0x30(%rbp), %r12d
jg 0x2e0d3
movl %r12d, %r14d
addq -0x58(%rbp), %r14
movq -0x40(%rbp), %rdi
movq %r14, %rsi
callq 0x2c1c4
movzwl %ax, %edx
subl %edx, %r15d
movl $0xc62c, %edi           # imm = 0xC62C
cmpl -0x2c(%rbp), %r15d
jl 0x2e0d3
addl %edx, %r12d
cmpl -0x50(%rbp), %r12d
jg 0x2e0d3
movl %r15d, %edi
addq -0x38(%rbp), %rdi
movq %r14, %rsi
callq 0x82c0
movl %r15d, %eax
rolw $0x8, %ax
movw %ax, -0x1(%rbx,%r13,2)
incq %r13
jmp 0x2e00c
movl %r15d, %eax
rolw $0x8, %ax
movq -0x38(%rbp), %rcx
movq -0x48(%rbp), %rdx
movw %ax, 0x5(%rcx,%rdx)
andw $0x0, 0x1(%rcx,%rdx)
movb $0x0, 0x7(%rcx,%rdx)
movl -0x2c(%rbp), %eax
movl %eax, %edi
addq %rcx, %rdi
subl %eax, %r15d
movslq %r15d, %r15
xorl %r14d, %r14d
xorl %esi, %esi
movq %r15, %rdx
callq 0x81e0
movq -0x40(%rbp), %rax
movzwl 0xe(%rax), %eax
movl $0xc63d, %edi           # imm = 0xC63D
cmpl %eax, %r15d
je 0x2e0dc
callq 0x1a1fc
pushq $0xb
popq %r14
movl %r14d, %eax
addq $0x38, %rsp
popq %rbx
popq %r12
popq %r13
popq %r14
popq %r15
popq %rbp
retq