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🆕 完成了简单的内存管理单元，能分配内存页面

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This commit is contained in:
fslongjin
2022-01-28 16:31:40 +08:00
parent 8131264e3f
commit 98e62e1e19
4 changed files with 195 additions and 23 deletions
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22
kernel/main.c
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@ -7,6 +7,7 @@
#include "exception/gate.h"
#include "exception/trap.h"
#include "mm/mm.h"
#include "common/kprint.h"
int *FR_address = (int *)0xffff800000a00000; //帧缓存区的地址
//char fxsave_region[512] __attribute__((aligned(16)));
@ -61,6 +62,23 @@ void test_printk()
printk("\nTest base 16 : %d --> %#X\n", 255, 255);
}
// 测试内存管理单元
void test_mm()
{
kinfo("Testing memory management unit...");
printk("bmp[0]:%#018x\tbmp[1]%#018lx\n", *memory_management_struct.bmp, *memory_management_struct.bmp + 1);
kinfo("Try to allocate 64 memory pages.");
struct Page *page = alloc_pages(ZONE_NORMAL, 64, PAGE_PGT_MAPPED | PAGE_ACTIVE | PAGE_KERNEL);
for (int i = 0; i <= 65; ++i)
{
printk("page%d\tattr:%#018lx\tphys_addr:%#018lx\t", i, page->attr, page->addr_phys);
++page;
if (((i + 1) % 2) == 0)
printk("\n");
}
printk("bmp[0]:%#018x\tbmp[1]%#018lx\n", *memory_management_struct.bmp, *memory_management_struct.bmp + 1);
}
void init()
{
// 初始化printk
@ -76,7 +94,6 @@ void init()
// 初始化中断描述符表
init_sys_vector();
//asm volatile(" fxsave %0 " ::"m"(fxsave_region));
// 初始化内存管理单元
printk("[ DragonOS ] Initializing memory manage unit...\n");
@ -87,7 +104,8 @@ void Start_Kernel(void)
{
init();
show_welcome();
//show_welcome();
test_mm();
//test_printk();