mirror of
https://github.com/DragonOS-Community/DragonOS.git
synced 2025-06-11 09:06:47 +00:00
删除了一些信息的打印
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98e62e1e19
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49eaf6ce95
@ -26,18 +26,17 @@
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// 定义类型的缩写
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typedef unsigned long ul;
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typedef unsigned long long ull;
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typedef long long ll;
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typedef unsigned long long int ull;
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typedef long long int ll;
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#define ABS(x) ((x) > 0 ? (x) : -(x)) // 绝对值
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#define ABS(x) ((x) > 0 ? (x) : -(x)) // 绝对值
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// 四舍五入成整数
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ul round(double x)
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{
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return (ul)(x+0.5);
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return (ul)(x + 0.5);
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}
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//链表数据结构
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struct List
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{
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@ -112,11 +111,9 @@ static inline int strlen(char *s)
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return __res;
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}
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void *memset(void *dst, unsigned char C, ul Count)
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{
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int d0, d1;
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unsigned long tmp = C * 0x0101010101010101UL;
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__asm__ __volatile__("cld \n\t"
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@ -140,7 +137,7 @@ void *memset(void *dst, unsigned char C, ul Count)
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void *memset_c(void *dst, unsigned char c, ul n)
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{
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unsigned char *s = (unsigned char *)dst;
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for(int i=0;i<n;++i)
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for (int i = 0; i < n; ++i)
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s[i] = c;
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return dst;
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}
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@ -316,7 +316,7 @@ static int vsprintf(char *buf, const char *fmt, va_list args)
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case 'X':
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//flags |= SPECIAL;
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if (qualifier == 'l')
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str = write_num(str, va_arg(args, long long), 16, field_width, precision, flags);
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str = write_num(str, va_arg(args, ull), 16, field_width, precision, flags);
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else
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str = write_num(str, va_arg(args, int), 16, field_width, precision, flags);
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break;
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@ -379,7 +379,7 @@ static int vsprintf(char *buf, const char *fmt, va_list args)
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return str - buf;
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}
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static char *write_num(char *str, long long num, int base, int field_width, int precision, int flags)
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static char *write_num(char *str, ull num, int base, int field_width, int precision, int flags)
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{
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/**
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* @brief 将数字按照指定的要求转换成对应的字符串
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@ -92,7 +92,7 @@ static int vsprintf(char *buf, const char *fmt, va_list args);
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* @param precision 精度
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* @param flags 标志位
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*/
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static char* write_num(char *str, long long num, int base, int field_width, int precision, int flags);
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static char* write_num(char *str, ull num, int base, int field_width, int precision, int flags);
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static char *write_float_point_num(char *str, double num, int field_width, int precision, int flags);
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@ -66,7 +66,7 @@ void test_printk()
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void test_mm()
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{
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kinfo("Testing memory management unit...");
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printk("bmp[0]:%#018x\tbmp[1]%#018lx\n", *memory_management_struct.bmp, *memory_management_struct.bmp + 1);
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//printk("bmp[0]:%#018x\tbmp[1]%#018lx\n", *memory_management_struct.bmp, *(memory_management_struct.bmp + 1));
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kinfo("Try to allocate 64 memory pages.");
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struct Page *page = alloc_pages(ZONE_NORMAL, 64, PAGE_PGT_MAPPED | PAGE_ACTIVE | PAGE_KERNEL);
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for (int i = 0; i <= 65; ++i)
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@ -76,7 +76,8 @@ void test_mm()
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if (((i + 1) % 2) == 0)
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printk("\n");
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}
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printk("bmp[0]:%#018x\tbmp[1]%#018lx\n", *memory_management_struct.bmp, *memory_management_struct.bmp + 1);
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//printk("bmp[0]:%#018x\tbmp[1]%#018lx\n", *(memory_management_struct.bmp), *(memory_management_struct.bmp + 1));
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}
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void init()
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@ -96,7 +97,7 @@ void init()
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//asm volatile(" fxsave %0 " ::"m"(fxsave_region));
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// 初始化内存管理单元
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printk("[ DragonOS ] Initializing memory manage unit...\n");
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mm_init();
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}
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//操作系统内核从这里开始执行
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@ -1,20 +1,18 @@
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#include "mm.h"
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#include "../common/printk.h"
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#include "../common/kprint.h"
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ul Total_Memory = 0;
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ul total_2M_pages = 0;
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void mm_init()
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{
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printk("[ INFO ] Initializing memory management unit...\n");
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kinfo("Initializing memory management unit...");
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// 实模式下获取到的信息的起始地址,转换为ARDS指针
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struct ARDS *ards_ptr = (struct ARDS *)0xffff800000007e00;
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for (int i = 0; i < 32; ++i)
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{
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//printk("Addr = %#18lx\tLength = %#18lx\tType = %#10lx\n",
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// ards_ptr->BaseAddr, ards_ptr->Length, ards_ptr->type);
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//可用的内存
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if (ards_ptr->type == 1)
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Total_Memory += ards_ptr->Length;
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@ -51,7 +49,7 @@ void mm_init()
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total_2M_pages += ((addr_end - addr_start) >> PAGE_2M_SHIFT);
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}
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printk("[ INFO ] Total amounts of 2M pages : %ld.\n", total_2M_pages);
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kinfo("Total amounts of 2M pages : %ld.", total_2M_pages);
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// 设置内核程序不同部分的起止地址
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memory_management_struct.kernel_code_start = (ul)&_text;
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@ -147,20 +145,21 @@ void mm_init()
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// 计算zone结构体的总长度(按照64位对齐)
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memory_management_struct.zones_struct_len = (memory_management_struct.count_zones * sizeof(struct Zone) + sizeof(ul) - 1) & (~(sizeof(ul) - 1));
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/*
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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);
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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);
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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);
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*/
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ZONE_DMA_INDEX = 0; //need rewrite in the future
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ZONE_NORMAL_INDEX = 0; //need rewrite in the future
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for (int i = 0; i < memory_management_struct.count_zones; ++i) //need rewrite in the future
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{
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struct Zone *z = memory_management_struct.zones_struct + i;
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printk_color(ORANGE, BLACK, "zone_addr_start:%#18lx, zone_addr_end:%#18lx, zone_length:%#18lx, pages_group:%#18lx, count_pages:%#18lx\n",
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z->zone_addr_start, z->zone_addr_end, z->zone_length, z->pages_group, z->count_pages);
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//printk_color(ORANGE, BLACK, "zone_addr_start:%#18lx, zone_addr_end:%#18lx, zone_length:%#18lx, pages_group:%#18lx, count_pages:%#18lx\n",
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// z->zone_addr_start, z->zone_addr_end, z->zone_length, z->pages_group, z->count_pages);
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// 1GB以上的内存空间不做映射
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if (z->zone_addr_start == 0x100000000)
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@ -169,8 +168,8 @@ void mm_init()
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// 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。
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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));
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printk_color(ORANGE, BLACK, "code_start:%#18lx, code_end:%#18lx, data_end:%#18lx, kernel_end:%#18lx, end_of_struct:%#18lx\n",
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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);
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//printk_color(ORANGE, BLACK, "code_start:%#18lx, code_end:%#18lx, data_end:%#18lx, kernel_end:%#18lx, end_of_struct:%#18lx\n",
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// 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);
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// 初始化内存管理单元结构所占的物理页的结构体
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@ -183,9 +182,11 @@ void mm_init()
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ul *cr3 = get_CR3();
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/*
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printk_color(INDIGO, BLACK, "cr3:\t%#018lx\n", cr3);
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printk_color(INDIGO, BLACK, "*cr3:\t%#018lx\n", *(phys_2_virt(cr3)) & (~0xff));
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printk_color(INDIGO, BLACK, "**cr3:\t%#018lx\n", *phys_2_virt(*(phys_2_virt(cr3)) & (~0xff)) & (~0xff));
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*/
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// 消除一致性页表映射,将页目录(PML4E)的前10项清空
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for (int i = 0; i < 10; ++i)
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@ -193,7 +194,7 @@ void mm_init()
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flush_tlb();
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printk("[ INFO ] Memory management unit initialized.\n");
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kinfo("Memory management unit initialize complete!");
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}
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/**
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@ -211,8 +212,8 @@ unsigned long page_init(struct Page *page, ul flags)
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if (!page->attr)
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{
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// 将bmp对应的标志位置位
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*(memory_management_struct.bmp + ((page->addr_phys >> PAGE_2M_SHIFT) >> 6)) |= (1UL << ((page->addr_phys >> PAGE_2M_SHIFT) % 64));
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*(memory_management_struct.bmp + ((page->addr_phys >> PAGE_2M_SHIFT) >> 6)) |= 1UL << (page->addr_phys >> PAGE_2M_SHIFT) % 64;
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page->attr = flags;
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++(page->ref_counts);
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++(page->zone->count_pages_using);
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@ -229,7 +230,9 @@ unsigned long page_init(struct Page *page, ul flags)
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else
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{
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// 将bmp对应的标志位置位
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*(memory_management_struct.bmp + ((page->addr_phys >> PAGE_2M_SHIFT) >> 6)) |= (1UL << ((page->addr_phys >> PAGE_2M_SHIFT) % 64));
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//*(memory_management_struct.bmp + ((page->addr_phys >> PAGE_2M_SHIFT) >> 6)) |= (1UL << ((page->addr_phys >> PAGE_2M_SHIFT) % 64));
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*(memory_management_struct.bmp + ((page->addr_phys >> PAGE_2M_SHIFT) >> 6)) |= 1UL << (page->addr_phys >> PAGE_2M_SHIFT) % 64;
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page->attr |= flags;
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}
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return 0;
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@ -263,9 +266,7 @@ struct Page *alloc_pages(unsigned int zone_select, int num, ul flags)
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break;
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default:
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printk("[ ");
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printk_color(YELLOW, BLACK, "WARN");
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printk(" ] In alloc_pages: param: zone_select incorrect.\n");
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kwarn("In alloc_pages: param: zone_select incorrect.");
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// 返回空
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return NULL;
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break;
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@ -292,20 +293,19 @@ struct Page *alloc_pages(unsigned int zone_select, int num, ul flags)
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ul shift = j % 64;
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for (int k = shift; k < 64 - shift; ++k)
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for (ul k = shift; k < 64 - shift; ++k)
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{
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// 寻找连续num个空页
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if (!(((*p >> k) | (*(p + 1) << (64 - k))) & (num == 64 ? 0xffffffffffffffffUL : ((1 << num) - 1))))
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if (!(((*p >> k) | (*(p + 1) << (64 - k))) & (num == 64 ? 0xffffffffffffffffUL : ((1UL << num) - 1))))
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{
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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)
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for(int l=0;l<num;++l)
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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)
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for (ul l = 0; l < num; ++l)
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{
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struct Page* x = memory_management_struct.pages_struct+start_page_num+l;
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struct Page *x = memory_management_struct.pages_struct + start_page_num + l;
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page_init(x, flags);
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}
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// 成功分配了页面,返回第一个页面的指针
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return (struct Page*)(memory_management_struct.pages_struct+start_page_num);
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return (struct Page *)(memory_management_struct.pages_struct + start_page_num);
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}
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}
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}
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