DragonOS-Community/DragonOS
1
1
Fork 0
mirror of https://github.com/DragonOS-Community/DragonOS.git synced 2025-06-11 09:06:47 +00:00
Code Issues Releases Wiki Activity

删除了一些信息的打印

Browse Source
This commit is contained in:
fslongjin 2022-01-28 22:45:05 +08:00
parent 98e62e1e19
commit 49eaf6ce95
5 changed files with 36 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
kernel/common/glib.h
View File

@ -26,18 +26,17 @@
// 定义类型的缩写
typedef unsigned long ul;
typedef unsigned long long ull;
typedef long long ll;
typedef unsigned long long int ull;
typedef long long int ll;
#define ABS(x) ((x) > 0 ? (x) : -(x)) // 绝对值
#define ABS(x) ((x) > 0 ? (x) : -(x)) // 绝对值
// 四舍五入成整数
ul round(double x)
{
return (ul)(x+0.5);
return (ul)(x + 0.5);
}
//链表数据结构
struct List
{
@ -112,11 +111,9 @@ static inline int strlen(char *s)
return __res;
}
void *memset(void *dst, unsigned char C, ul Count)
{
int d0, d1;
unsigned long tmp = C * 0x0101010101010101UL;
__asm__ __volatile__("cld \n\t"
@ -140,7 +137,7 @@ void *memset(void *dst, unsigned char C, ul Count)
void *memset_c(void *dst, unsigned char c, ul n)
{
unsigned char *s = (unsigned char *)dst;
for(int i=0;i<n;++i)
for (int i = 0; i < n; ++i)
s[i] = c;
return dst;
}

4
kernel/common/printk.c
View File

@ -316,7 +316,7 @@ static int vsprintf(char *buf, const char *fmt, va_list args)
case 'X':
//flags |= SPECIAL;
if (qualifier == 'l')
str = write_num(str, va_arg(args, long long), 16, field_width, precision, flags);
str = write_num(str, va_arg(args, ull), 16, field_width, precision, flags);
else
str = write_num(str, va_arg(args, int), 16, field_width, precision, flags);
break;
@ -379,7 +379,7 @@ static int vsprintf(char *buf, const char *fmt, va_list args)
return str - buf;
}
static char *write_num(char *str, long long num, int base, int field_width, int precision, int flags)
static char *write_num(char *str, ull num, int base, int field_width, int precision, int flags)
{
/**
* @brief 将数字按照指定的要求转换成对应的字符串

2
kernel/common/printk.h
View File

@ -92,7 +92,7 @@ static int vsprintf(char *buf, const char *fmt, va_list args);
* @param precision 精度
* @param flags 标志位
*/
static char* write_num(char *str, long long num, int base, int field_width, int precision, int flags);
static char* write_num(char *str, ull num, int base, int field_width, int precision, int flags);
static char *write_float_point_num(char *str, double num, int field_width, int precision, int flags);

7
kernel/main.c
View File

@ -66,7 +66,7 @@ void test_printk()
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);
//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)
@ -76,7 +76,8 @@ void test_mm()
if (((i + 1) % 2) == 0)
printk("\n");
}
printk("bmp[0]:%#018x\tbmp[1]%#018lx\n", *memory_management_struct.bmp, *memory_management_struct.bmp + 1);
//printk("bmp[0]:%#018x\tbmp[1]%#018lx\n", *(memory_management_struct.bmp), *(memory_management_struct.bmp + 1));
}
void init()
@ -96,7 +97,7 @@ void init()
//asm volatile(" fxsave %0 " ::"m"(fxsave_region));
// 初始化内存管理单元
printk("[ DragonOS ] Initializing memory manage unit...\n");
mm_init();
}
//操作系统内核从这里开始执行

46
kernel/mm/mm.c
View File

@ -1,20 +1,18 @@
#include "mm.h"
#include "../common/printk.h"
#include "../common/kprint.h"
ul Total_Memory = 0;
ul total_2M_pages = 0;
void mm_init()
{
printk("[ INFO ] Initializing memory management unit...\n");
kinfo("Initializing memory management unit...");
// 实模式下获取到的信息的起始地址，转换为ARDS指针
struct ARDS *ards_ptr = (struct ARDS *)0xffff800000007e00;
for (int i = 0; i < 32; ++i)
{
//printk("Addr = %#18lx\tLength = %#18lx\tType = %#10lx\n",
// ards_ptr->BaseAddr, ards_ptr->Length, ards_ptr->type);
//可用的内存
if (ards_ptr->type == 1)
Total_Memory += ards_ptr->Length;
@ -51,7 +49,7 @@ void mm_init()
total_2M_pages += ((addr_end - addr_start) >> PAGE_2M_SHIFT);
}
printk("[ INFO ] Total amounts of 2M pages : %ld.\n", total_2M_pages);
kinfo("Total amounts of 2M pages : %ld.", total_2M_pages);
// 设置内核程序不同部分的起止地址
memory_management_struct.kernel_code_start = (ul)&_text;
@ -147,20 +145,21 @@ void mm_init()
// 计算zone结构体的总长度（按照64位对齐）
memory_management_struct.zones_struct_len = (memory_management_struct.count_zones * sizeof(struct Zone) + sizeof(ul) - 1) & (~(sizeof(ul) - 1));
/*
printk_color(ORANGE, BLACK, "bmp:%#18lx, bmp_len:%#18lx, bits_size:%#18lx\n", memory_management_struct.bmp, memory_management_struct.bmp_len, memory_management_struct.bits_size);
printk_color(ORANGE, BLACK, "pages_struct:%#18lx, count_pages:%#18lx, pages_struct_len:%#18lx\n", memory_management_struct.pages_struct, memory_management_struct.count_pages, memory_management_struct.pages_struct_len);
printk_color(ORANGE, BLACK, "zones_struct:%#18lx, count_zones:%#18lx, zones_struct_len:%#18lx\n", memory_management_struct.zones_struct, memory_management_struct.count_zones, memory_management_struct.zones_struct_len);
*/
ZONE_DMA_INDEX = 0; //need rewrite in the future
ZONE_NORMAL_INDEX = 0; //need rewrite in the future
for (int i = 0; i < memory_management_struct.count_zones; ++i) //need rewrite in the future
{
struct Zone *z = memory_management_struct.zones_struct + i;
printk_color(ORANGE, BLACK, "zone_addr_start:%#18lx, zone_addr_end:%#18lx, zone_length:%#18lx, pages_group:%#18lx, count_pages:%#18lx\n",
z->zone_addr_start, z->zone_addr_end, z->zone_length, z->pages_group, z->count_pages);
//printk_color(ORANGE, BLACK, "zone_addr_start:%#18lx, zone_addr_end:%#18lx, zone_length:%#18lx, pages_group:%#18lx, count_pages:%#18lx\n",
// z->zone_addr_start, z->zone_addr_end, z->zone_length, z->pages_group, z->count_pages);
// 1GB以上的内存空间不做映射
if (z->zone_addr_start == 0x100000000)
@ -169,8 +168,8 @@ void mm_init()
// 设置内存页管理结构的地址，预留了一段空间，防止内存越界。
memory_management_struct.end_of_struct = (ul)((ul)memory_management_struct.zones_struct + memory_management_struct.zones_struct_len + sizeof(long) * 32) & (~(sizeof(long) - 1));
printk_color(ORANGE, BLACK, "code_start:%#18lx, code_end:%#18lx, data_end:%#18lx, kernel_end:%#18lx, end_of_struct:%#18lx\n",
memory_management_struct.kernel_code_start, memory_management_struct.kernel_code_end, memory_management_struct.kernel_data_end, memory_management_struct.kernel_end, memory_management_struct.end_of_struct);
//printk_color(ORANGE, BLACK, "code_start:%#18lx, code_end:%#18lx, data_end:%#18lx, kernel_end:%#18lx, end_of_struct:%#18lx\n",
// memory_management_struct.kernel_code_start, memory_management_struct.kernel_code_end, memory_management_struct.kernel_data_end, memory_management_struct.kernel_end, memory_management_struct.end_of_struct);
// 初始化内存管理单元结构所占的物理页的结构体
@ -183,9 +182,11 @@ void mm_init()
ul *cr3 = get_CR3();
/*
printk_color(INDIGO, BLACK, "cr3:\t%#018lx\n", cr3);
printk_color(INDIGO, BLACK, "*cr3:\t%#018lx\n", *(phys_2_virt(cr3)) & (~0xff));
printk_color(INDIGO, BLACK, "**cr3:\t%#018lx\n", *phys_2_virt(*(phys_2_virt(cr3)) & (~0xff)) & (~0xff));
*/
// 消除一致性页表映射，将页目录（PML4E）的前10项清空
for (int i = 0; i < 10; ++i)
@ -193,7 +194,7 @@ void mm_init()
flush_tlb();
printk("[ INFO ] Memory management unit initialized.\n");
kinfo("Memory management unit initialize complete!");
}
/**
@ -211,8 +212,8 @@ unsigned long page_init(struct Page *page, ul flags)
if (!page->attr)
{
// 将bmp对应的标志位置位
*(memory_management_struct.bmp + ((page->addr_phys >> PAGE_2M_SHIFT) >> 6)) |= (1UL << ((page->addr_phys >> PAGE_2M_SHIFT) % 64));
*(memory_management_struct.bmp + ((page->addr_phys >> PAGE_2M_SHIFT) >> 6)) |= 1UL << (page->addr_phys >> PAGE_2M_SHIFT) % 64;
page->attr = flags;
++(page->ref_counts);
++(page->zone->count_pages_using);
@ -229,7 +230,9 @@ unsigned long page_init(struct Page *page, ul flags)
else
{
// 将bmp对应的标志位置位
*(memory_management_struct.bmp + ((page->addr_phys >> PAGE_2M_SHIFT) >> 6)) |= (1UL << ((page->addr_phys >> PAGE_2M_SHIFT) % 64));
//*(memory_management_struct.bmp + ((page->addr_phys >> PAGE_2M_SHIFT) >> 6)) |= (1UL << ((page->addr_phys >> PAGE_2M_SHIFT) % 64));
*(memory_management_struct.bmp + ((page->addr_phys >> PAGE_2M_SHIFT) >> 6)) |= 1UL << (page->addr_phys >> PAGE_2M_SHIFT) % 64;
page->attr |= flags;
}
return 0;
@ -263,9 +266,7 @@ struct Page *alloc_pages(unsigned int zone_select, int num, ul flags)
break;
default:
printk("[ ");
printk_color(YELLOW, BLACK, "WARN");
printk(" ] In alloc_pages: param: zone_select incorrect.\n");
kwarn("In alloc_pages: param: zone_select incorrect.");
// 返回空
return NULL;
break;
@ -292,20 +293,19 @@ struct Page *alloc_pages(unsigned int zone_select, int num, ul flags)
ul shift = j % 64;
for (int k = shift; k < 64 - shift; ++k)
for (ul k = shift; k < 64 - shift; ++k)
{
// 寻找连续num个空页
if (!(((*p >> k) | (*(p + 1) << (64 - k))) & (num == 64 ? 0xffffffffffffffffUL : ((1 << num) - 1))))
if (!(((*p >> k) | (*(p + 1) << (64 - k))) & (num == 64 ? 0xffffffffffffffffUL : ((1UL << num) - 1))))
{
ul start_page_num = j + k - shift; // 计算得到要开始获取的内存页的页号（书上的公式有问题，这个是改过之后的版本）
for(int l=0;l<num;++l)
ul start_page_num = j + k - 1; // 计算得到要开始获取的内存页的页号（书上的公式有问题，这个是改过之后的版本）
for (ul l = 0; l < num; ++l)
{
struct Page* x = memory_management_struct.pages_struct+start_page_num+l;
struct Page *x = memory_management_struct.pages_struct + start_page_num + l;
page_init(x, flags);
}
// 成功分配了页面，返回第一个页面的指针
return (struct Page*)(memory_management_struct.pages_struct+start_page_num);
return (struct Page *)(memory_management_struct.pages_struct + start_page_num);
}
}
}