X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/8fdcd1575a97862975fa019f09c00453a2a7d8bb..45e1f8b055043e54be35462852ab6649d634da7c:/lunaix-os/arch/x86/hhk.c diff --git a/lunaix-os/arch/x86/hhk.c b/lunaix-os/arch/x86/hhk.c index 997bbdf..4922122 100644 --- a/lunaix-os/arch/x86/hhk.c +++ b/lunaix-os/arch/x86/hhk.c @@ -7,7 +7,7 @@ #define SET_PDE(ptd, pde_index, pde) *((ptd_t*)ptd + pde_index) = pde; #define SET_PTE(ptd, pt_index, pte_index, pte) \ *(PT_ADDR(ptd, pt_index) + pte_index) = pte; -#define sym_val(sym) (uintptr_t)(&sym) +#define sym_val(sym) (ptr_t)(&sym) #define KERNEL_PAGE_COUNT \ ((sym_val(__kernel_end) - sym_val(__kernel_start) + 0x1000 - 1) >> 12); @@ -24,10 +24,10 @@ #define PG_TABLE_STACK 8 // Provided by linker (see linker.ld) -extern uint8_t __kernel_start; -extern uint8_t __kernel_end; -extern uint8_t __init_hhk_end; -extern uint8_t _k_stack; +extern u8_t __kernel_start; +extern u8_t __kernel_end; +extern u8_t __init_hhk_end; +extern u8_t _k_stack; void _init_page(ptd_t* ptd) @@ -36,7 +36,7 @@ _init_page(ptd_t* ptd) // 对低1MiB空间进行对等映射(Identity // mapping),也包括了我们的VGA,方便内核操作。 - for (uint32_t i = 0; i < 256; i++) { + for (u32_t i = 0; i < 256; i++) { SET_PTE(ptd, PG_TABLE_IDENTITY, i, @@ -46,7 +46,7 @@ _init_page(ptd_t* ptd) // 对等映射我们的hhk_init,这样一来,当分页与地址转换开启后,我们依然能够照常执行最终的 // jmp 指令来跳转至 // 内核的入口点 - for (uint32_t i = 0; i < HHK_PAGE_COUNT; i++) { + for (u32_t i = 0; i < HHK_PAGE_COUNT; i++) { SET_PTE(ptd, PG_TABLE_IDENTITY, 256 + i, @@ -57,14 +57,14 @@ _init_page(ptd_t* ptd) // 这里是一些计算,主要是计算应当映射进的 页目录 与 页表 的条目索引(Entry // Index) - uint32_t kernel_pde_index = L1_INDEX(sym_val(__kernel_start)); - uint32_t kernel_pte_index = L2_INDEX(sym_val(__kernel_start)); - uint32_t kernel_pg_counts = KERNEL_PAGE_COUNT; + u32_t kernel_pde_index = L1_INDEX(sym_val(__kernel_start)); + u32_t kernel_pte_index = L2_INDEX(sym_val(__kernel_start)); + u32_t kernel_pg_counts = KERNEL_PAGE_COUNT; // 将内核所需要的页表注册进页目录 // 当然,就现在而言,我们的内核只占用不到50个页(每个页表包含1024个页) // 这里分配了3个页表(12MiB),未雨绸缪。 - for (uint32_t i = 0; i < PG_TABLE_STACK - PG_TABLE_KERNEL; i++) { + for (u32_t i = 0; i < PG_TABLE_STACK - PG_TABLE_KERNEL; i++) { SET_PDE(ptd, kernel_pde_index + i, NEW_L1_ENTRY(PG_PREM_URW, PT_ADDR(ptd, PG_TABLE_KERNEL + i))) @@ -79,10 +79,10 @@ _init_page(ptd_t* ptd) } // 计算内核.text段的物理地址 - uintptr_t kernel_pm = V2P(&__kernel_start); + ptr_t kernel_pm = V2P(&__kernel_start); // 重映射内核至高半区地址(>=0xC0000000) - for (uint32_t i = 0; i < kernel_pg_counts; i++) { + for (u32_t i = 0; i < kernel_pg_counts; i++) { // FIXME: 只是用作用户模式(R3)测试! // 在实际中,内核代码除了极少部分需要暴露给R3(如从信号返回),其余的应为R0。 SET_PTE(ptd, @@ -95,8 +95,8 @@ _init_page(ptd_t* ptd) SET_PDE(ptd, PG_MAX_ENTRIES - 1, NEW_L1_ENTRY(T_SELF_REF_PERM, ptd)); } -uint32_t -__save_subset(uint8_t* destination, uint8_t* base, unsigned int size) +u32_t +__save_subset(u8_t* destination, u8_t* base, unsigned int size) { unsigned int i = 0; for (; i < size; i++) { @@ -106,36 +106,34 @@ __save_subset(uint8_t* destination, uint8_t* base, unsigned int size) } void -_save_multiboot_info(multiboot_info_t* info, uint8_t* destination) +_save_multiboot_info(multiboot_info_t* info, u8_t* destination) { - uint32_t current = 0; - uint8_t* info_b = (uint8_t*)info; + u32_t current = 0; + u8_t* info_b = (u8_t*)info; for (; current < sizeof(multiboot_info_t); current++) { *(destination + current) = *(info_b + current); } - ((multiboot_info_t*)destination)->mmap_addr = - (uintptr_t)destination + current; + ((multiboot_info_t*)destination)->mmap_addr = (ptr_t)destination + current; current += __save_subset( - destination + current, (uint8_t*)info->mmap_addr, info->mmap_length); + destination + current, (u8_t*)info->mmap_addr, info->mmap_length); if (present(info->flags, MULTIBOOT_INFO_DRIVE_INFO)) { ((multiboot_info_t*)destination)->drives_addr = - (uintptr_t)destination + current; - current += __save_subset(destination + current, - (uint8_t*)info->drives_addr, - info->drives_length); + (ptr_t)destination + current; + current += __save_subset( + destination + current, (u8_t*)info->drives_addr, info->drives_length); } } void -_hhk_init(ptd_t* ptd, uint32_t kpg_size) +_hhk_init(ptd_t* ptd, u32_t kpg_size) { // 初始化 kpg 全为0 // P.s. 真没想到GRUB会在这里留下一堆垃圾! 老子的页表全乱套了! - uint8_t* kpg = (uint8_t*)ptd; - for (uint32_t i = 0; i < kpg_size; i++) { + u8_t* kpg = (u8_t*)ptd; + for (u32_t i = 0; i < kpg_size; i++) { *(kpg + i) = 0; }