X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/cd09c4b222e4ddf45a42522563ae2471a829d1c8..b0c2a4be2d1f4f93ab01d0858979a12ef0735ec1:/lunaix-os/arch/x86/hhk.c diff --git a/lunaix-os/arch/x86/hhk.c b/lunaix-os/arch/x86/hhk.c index c0e5f9a..ed3709f 100644 --- a/lunaix-os/arch/x86/hhk.c +++ b/lunaix-os/arch/x86/hhk.c @@ -29,26 +29,26 @@ extern uint8_t _k_stack; void _init_page(ptd_t* ptd) { - SET_PDE(ptd, 0, PDE(PG_PRESENT, ptd + PG_MAX_ENTRIES)) + SET_PDE(ptd, 0, NEW_L1_ENTRY(PG_PRESENT, ptd + PG_MAX_ENTRIES)) // 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++) { - SET_PTE(ptd, PG_TABLE_IDENTITY, i, PTE(PG_PREM_RW, (i << 12))) + SET_PTE(ptd, PG_TABLE_IDENTITY, i, NEW_L2_ENTRY(PG_PREM_RW, (i << PG_SIZE_BITS))) } // 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++) { - SET_PTE(ptd, PG_TABLE_IDENTITY, 256 + i, PTE(PG_PREM_RW, 0x100000 + (i << 12))) + SET_PTE(ptd, PG_TABLE_IDENTITY, 256 + i, NEW_L2_ENTRY(PG_PREM_RW, 0x100000 + (i << PG_SIZE_BITS))) } // --- 将内核重映射至高半区 --- // 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 = PD_INDEX(sym_val(__kernel_start)); - uint32_t kernel_pte_index = PT_INDEX(sym_val(__kernel_start)); + 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; // 将内核所需要的页表注册进页目录 @@ -59,12 +59,12 @@ _init_page(ptd_t* ptd) { SET_PDE( ptd, kernel_pde_index + i, - PDE(PG_PREM_RW, PT_ADDR(ptd, PG_TABLE_KERNEL + i)) + NEW_L1_ENTRY(PG_PREM_RW, PT_ADDR(ptd, PG_TABLE_KERNEL + i)) ) } // 首先,检查内核的大小是否可以fit进我们这几个表(12MiB) - if (kernel_pg_counts > (PG_TABLE_STACK - PG_TABLE_KERNEL) * 1024) { + if (kernel_pg_counts > (PG_TABLE_STACK - PG_TABLE_KERNEL) * PG_MAX_ENTRIES) { // ERROR: require more pages // here should do something else other than head into blocking while (1); @@ -80,15 +80,15 @@ _init_page(ptd_t* ptd) { ptd, PG_TABLE_KERNEL, kernel_pte_index + i, - PTE(PG_PREM_RW, kernel_pm + (i << 12)) + NEW_L2_ENTRY(PG_PREM_RW, kernel_pm + (i << PG_SIZE_BITS)) ) } // 最后一个entry用于循环映射 SET_PDE( ptd, - 1023, - PDE(T_SELF_REF_PERM, ptd) + PG_MAX_ENTRIES - 1, + NEW_L1_ENTRY(T_SELF_REF_PERM, ptd) ); }