#include <memory.h>
#include <debug.h>

static long _brk = KERNEL_BRK0;
static long _mmap = KERNEL_MMAP;

long k_brk(long brk, long, long, long, long, long) {
    if(brk) {
        while(_brk < brk) {
            vmm_set_page(kernel_P4, _brk, pmm_alloc(), PAGE_GLOBAL | PAGE_WRITE | PAGE_PRESENT);
            _brk += PAGE_SIZE;
        }
        return _brk;
    } else {
        return _brk;
    }
}

long k_mmap(long addr, long length, long prot, long flags, long fd, long offset) {
    (void)addr;
    (void)prot;
    (void)flags;
    (void)offset;
    if(fd != -1)
        PANIC("Unknown mmap request\n");
    long retval = _mmap;
    while(length > 0) {
        vmm_set_page(kernel_P4, _mmap, pmm_alloc(), PAGE_GLOBAL | PAGE_WRITE | PAGE_PRESENT);
        _mmap += PAGE_SIZE;
        length -= PAGE_SIZE;
    }
    return retval;
}