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https://github.com/asterinas/asterinas.git
synced 2025-06-10 05:46:48 +00:00
Move whole kernel ELF to VMA
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4e1d98a323
commit
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@ -17,6 +17,8 @@ ENTRYTYPE_LINUX_64 = 4
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MULTIBOOT_ENTRY_MAGIC = 0x2BADB002
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MULTIBOOT2_ENTRY_MAGIC = 0x36D76289
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KERNEL_VMA = 0xffffffff80000000
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// The Linux 32-bit Boot Protocol entry point.
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// Must be located at 0x8001000, ABI immutable!
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.code32
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@ -27,7 +29,7 @@ __linux32_boot:
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cld
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// Set the kernel call stack.
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mov esp, offset boot_stack_top
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mov esp, offset boot_stack_top - KERNEL_VMA
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push 0 // upper 32-bits
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push esi // boot_params ptr
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@ -43,7 +45,7 @@ __linux32_boot:
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.global __linux64_boot_tag
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__linux64_boot_tag:
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// Set the kernel call stack.
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lea rsp, [boot_stack_top]
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lea rsp, [boot_stack_top - KERNEL_VMA]
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push rsi // boot_params ptr from the loader
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push ENTRYTYPE_LINUX_64
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@ -58,7 +60,7 @@ __multiboot_boot:
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cld
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// Set the kernel call stack.
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mov esp, offset boot_stack_top
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mov esp, offset boot_stack_top - KERNEL_VMA
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push 0 // Upper 32-bits.
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push eax // multiboot magic ptr
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@ -83,11 +85,11 @@ initial_boot_setup:
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// Prepare for far return. We use a far return as a fence after setting GDT.
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mov eax, 24
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push eax
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lea edx, [protected_mode]
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lea edx, [protected_mode - KERNEL_VMA]
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push edx
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// Switch to our own temporary GDT.
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lgdt [boot_gdtr]
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lgdt [boot_gdtr - KERNEL_VMA]
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retf
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protected_mode:
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@ -101,8 +103,8 @@ protected_mode:
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page_table_setup:
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// Zero out the page table.
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mov al, 0x00
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lea edi, [boot_page_table_start]
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lea ecx, [boot_page_table_end]
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lea edi, [boot_page_table_start - KERNEL_VMA]
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lea ecx, [boot_page_table_end - KERNEL_VMA]
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sub ecx, edi
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cld
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rep stosb
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@ -117,8 +119,8 @@ PTE_GLOBAL = (1 << 8)
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// 0x00000000_40000000 ~ 0x00000000_7fffffff
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// 0x00000000_80000000 ~ 0x00000000_bfffffff
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// 0x00000000_c0000000 ~ 0x00000000_ffffffff
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lea edi, [boot_pml4]
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lea eax, [boot_pdpt + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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lea edi, [boot_pml4 - KERNEL_VMA]
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lea eax, [boot_pdpt - KERNEL_VMA + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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mov dword ptr [edi], eax
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mov dword ptr [edi + 4], 0
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@ -127,56 +129,56 @@ PTE_GLOBAL = (1 << 8)
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// 0xffff8000_80000000 ~ 0xffff8000_bfffffff
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// 0xffff8000_c0000000 ~ 0xffff8000_ffffffff
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// 0xffff8008_00000000 ~ 0xffff8008_3fffffff
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lea edi, [boot_pml4 + 0x100 * 8]
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lea eax, [boot_pdpt + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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lea edi, [boot_pml4 - KERNEL_VMA + 0x100 * 8]
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lea eax, [boot_pdpt - KERNEL_VMA + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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mov dword ptr [edi], eax
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mov dword ptr [edi + 4], 0
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// PML4: 0xffffffff_80000000 ~ 0xffffffff_bfffffff
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// 0xffffffff_c0000000 ~ 0xffffffff_ffffffff
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lea edi, [boot_pml4 + 0x1ff * 8]
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lea eax, [boot_pdpt + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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lea edi, [boot_pml4 - KERNEL_VMA + 0x1ff * 8]
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lea eax, [boot_pdpt - KERNEL_VMA + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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mov dword ptr [edi], eax
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mov dword ptr [edi + 4], 0
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// PDPT: 0x00000000_00000000 ~ 0x00000000_3fffffff
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lea edi, [boot_pdpt]
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lea eax, [boot_pd_0g_1g + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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lea edi, [boot_pdpt - KERNEL_VMA]
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lea eax, [boot_pd_0g_1g - KERNEL_VMA + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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mov dword ptr [edi], eax
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mov dword ptr [edi + 4], 0
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// PDPT: 0x00000000_40000000 ~ 0x00000000_7fffffff
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lea edi, [boot_pdpt + 0x1 * 8]
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lea eax, [boot_pd_1g_2g + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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lea edi, [boot_pdpt - KERNEL_VMA + 0x1 * 8]
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lea eax, [boot_pd_1g_2g - KERNEL_VMA + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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mov dword ptr [edi], eax
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mov dword ptr [edi + 4], 0
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// PDPT: 0x00000000_80000000 ~ 0x00000000_bfffffff
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lea edi, [boot_pdpt + 0x2 * 8]
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lea eax, [boot_pd_2g_3g + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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lea edi, [boot_pdpt - KERNEL_VMA + 0x2 * 8]
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lea eax, [boot_pd_2g_3g - KERNEL_VMA + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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mov dword ptr [edi], eax
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mov dword ptr [edi + 4], 0
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// PDPT: 0x00000000_c0000000 ~ 0x00000000_ffffffff
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lea edi, [boot_pdpt + 0x3 * 8]
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lea eax, [boot_pd_3g_4g + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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lea edi, [boot_pdpt - KERNEL_VMA + 0x3 * 8]
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lea eax, [boot_pd_3g_4g - KERNEL_VMA + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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mov dword ptr [edi], eax
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mov dword ptr [edi + 4], 0
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// PDPT: 0xffffffff_80000000 ~ 0xffffffff_bfffffff
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lea edi, [boot_pdpt + 0x1fe * 8]
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lea eax, [boot_pd_0g_1g + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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lea edi, [boot_pdpt - KERNEL_VMA + 0x1fe * 8]
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lea eax, [boot_pd_0g_1g - KERNEL_VMA + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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mov dword ptr [edi], eax
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mov dword ptr [edi + 4], 0
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// PDPT: 0xffffffff_c0000000 ~ 0xffffffff_ffffffff
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lea edi, [boot_pdpt + 0x1ff * 8]
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lea eax, [boot_pd_1g_2g + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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lea edi, [boot_pdpt - KERNEL_VMA + 0x1ff * 8]
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lea eax, [boot_pd_1g_2g - KERNEL_VMA + (PTE_PRESENT | PTE_WRITE | PTE_GLOBAL)]
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mov dword ptr [edi], eax
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mov dword ptr [edi + 4], 0
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// Page Directory: map to low 1 GiB * 4 space
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lea edi, [boot_pd]
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lea edi, [boot_pd - KERNEL_VMA]
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mov eax, PTE_PRESENT | PTE_WRITE | PTE_GLOBAL | PTE_HUGE
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mov ecx, 512 * 4 // (of entries in PD) * (number of PD)
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write_pd_entry:
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@ -195,7 +197,7 @@ enable_long_mode:
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mov cr4, eax
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// Set the page table address.
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lea eax, [boot_pml4]
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lea eax, [boot_pml4 - KERNEL_VMA]
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mov cr3, eax
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// Enable long mode.
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@ -207,7 +209,7 @@ enable_long_mode:
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// Prepare for far return.
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mov eax, 8
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push eax
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lea edx, [long_mode_in_low_address]
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lea edx, [long_mode_in_low_address - KERNEL_VMA]
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push edx
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// Enable paging.
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@ -223,7 +225,7 @@ enable_long_mode:
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.global boot_gdtr
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boot_gdtr:
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.word gdt_end - gdt - 1
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.quad gdt
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.quad gdt - KERNEL_VMA
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.align 16
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gdt:
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@ -268,9 +270,9 @@ long_mode_in_low_address:
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mov gs, ax
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// Update RSP/RIP to use the virtual address.
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mov rbx, 0xffffffff80000000
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mov rbx, KERNEL_VMA
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or rsp, rbx
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lea rax, [long_mode - 0xffffffff80000000]
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lea rax, [long_mode - KERNEL_VMA]
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or rax, rbx
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jmp rax
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@ -10,6 +10,7 @@ MB2_MAGIC = 0xE85250D6
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MB2_ARCHITECTURE = 0 // 32-bit (protected) mode of i386
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MB2_HEADERLEN = header_end - header_start
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MB2_CHECKSUM = -(MB2_MAGIC + MB2_ARCHITECTURE + MB2_HEADERLEN)
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KERNEL_VMA = 0xffffffff80000000
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header_start:
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.align 8
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@ -25,7 +26,7 @@ entry_address_tag_start:
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.short 1 // Optional
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.long entry_address_tag_end - entry_address_tag_start
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.extern __multiboot_boot
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.long __multiboot_boot // entry_addr
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.long __multiboot_boot - KERNEL_VMA // entry_addr
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entry_address_tag_end:
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// Tag: information request
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@ -6,6 +6,8 @@
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use alloc::{vec, vec::Vec};
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use core::mem::swap;
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use crate::vm::kspace::kernel_loaded_offset;
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/// The type of initial memory regions that are needed for the kernel.
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#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug)]
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pub enum MemoryRegionType {
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@ -53,7 +55,7 @@ impl MemoryRegion {
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fn __kernel_end();
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}
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MemoryRegion {
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base: __kernel_start as usize,
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base: __kernel_start as usize - kernel_loaded_offset(),
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len: __kernel_end as usize - __kernel_start as usize,
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typ: MemoryRegionType::Kernel,
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}
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@ -12,7 +12,7 @@ repository = "https://github.com/asterinas/asterinas"
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[dependencies.linux-bzimage-builder]
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git = "https://github.com/asterinas/asterinas"
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# Make sure it syncs with `crate::util::ASTER_GIT_REV`
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rev = "cc4111c"
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rev = "c9b66bd"
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# When publishing, the crate.io version is used, make sure
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# the builder is published
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# FIXME: The version is currently commented out as it is no longer in use.
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@ -8,18 +8,16 @@ KERNEL_VMA = 0xffffffff80000000;
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SECTIONS
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{
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. = KERNEL_LMA;
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. = KERNEL_LMA + KERNEL_VMA;
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__kernel_start = .;
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.multiboot_header : { KEEP(*(.multiboot_header)) }
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.multiboot2_header : { KEEP(*(.multiboot2_header)) }
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. = LINUX_32_ENTRY;
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.boot : { KEEP(*(.boot)) }
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.multiboot_header : AT(ADDR(.multiboot_header) - KERNEL_VMA) { KEEP(*(.multiboot_header)) }
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.multiboot2_header : AT(ADDR(.multiboot2_header) - KERNEL_VMA) { KEEP(*(.multiboot2_header)) }
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. += KERNEL_VMA;
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. = LINUX_32_ENTRY + KERNEL_VMA;
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.boot : AT(ADDR(.boot) - KERNEL_VMA) { KEEP(*(.boot)) }
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.text : AT(ADDR(.text) - KERNEL_VMA) {
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*(.text .text.*)
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@ -71,5 +69,5 @@ SECTIONS
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. = DATA_SEGMENT_END(.);
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__kernel_end = . - KERNEL_VMA;
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__kernel_end = .;
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}
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@ -15,7 +15,7 @@ use quote::ToTokens;
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/// and use the published version in the generated Cargo.toml.
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pub const ASTER_GIT_LINK: &str = "https://github.com/asterinas/asterinas";
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/// Make sure it syncs with the builder dependency in Cargo.toml.
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pub const ASTER_GIT_REV: &str = "cc4111c";
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pub const ASTER_GIT_REV: &str = "c9b66bd";
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pub fn aster_crate_dep(crate_name: &str) -> String {
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format!(
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"{} = {{ git = \"{}\", rev = \"{}\" }}",
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