RockOS/kernel/lib/memory.c

#include "lib/memory.h"
#include "memory/mm.h"


void memcpy(const void* src, void* dst, size_t sz) {
    for (size_t i = 0; i < sz; i++) {
        ((uint8_t*)dst)[i] = ((uint8_t*)src)[i];
    }
}

void memset(const uint8_t* dst, uint8_t val, size_t sz) {
    for (size_t i = 0; i < sz; i++) {
        ((uint8_t*)dst)[i] = val;
    }
}

int strcmp(const char* s1, const char* s2) {
    while (*s1 && (*s1 == *s2)) {
        s1++;
        s2++;
    }
    return *(const uint8_t*)s1 - *(const uint8_t*)s2;
}

int strlen(const char* str) {
    int len = 0;
    while(*str != 0) {
        str++;
        len++;
    }
    return len;
}

static void* kernel_heap = (void*)0xE0000000;
static size_t kernel_heap_sz = 0;

void kheap_init() {
    if (kernel_heap_sz == 0) {
        void* frame = p_alloc_frame();
        map_page((uint32_t)kernel_heap, (uint32_t)frame, PAGE_PRESENT | PAGE_WRITABLE);
    }
}

void* alloc(size_t sz) {

}