initial commit
This commit is contained in:
commit
aeeef30e09
12
Cargo.lock
generated
Normal file
12
Cargo.lock
generated
Normal file
@ -0,0 +1,12 @@
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|||||||
|
[root]
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|
name = "mahdi_os"
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version = "0.1.0"
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dependencies = [
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"rlibc 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
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|
]
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[[package]]
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name = "rlibc"
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version = "0.1.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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|
|
15
Cargo.toml
Normal file
15
Cargo.toml
Normal file
@ -0,0 +1,15 @@
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|
[package]
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|
name = "mahdi_os"
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version = "0.1.0"
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authors = ["Mahdi Dibaiee <mdibaiee@aol.com>"]
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[lib]
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|
crate-type = ["staticlib"]
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||||||
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[dependencies]
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rlibc = "0.1.4"
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[profile.dev]
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panic = "abort"
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|
[profile.release]
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|
panic = "abort"
|
39
Makefile
Normal file
39
Makefile
Normal file
@ -0,0 +1,39 @@
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|
arch ?= x86_64
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|
kernel := build/kernel-$(arch).bin
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iso := build/os-$(arch).iso
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|
target ?= $(arch)-unknown-linux-gnu
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|
rust_os := target/$(target)/debug/libmahdi_os.a
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|
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|
linker_script = src/arch/$(arch)/linker.ld
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|
grub_cfg = src/arch/$(arch)/grub.cfg
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|
assembly_source_files = $(wildcard src/arch/$(arch)/*.asm)
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|
assembly_object_files = $(patsubst src/arch/$(arch)/%.asm, build/arch/$(arch)/%.o, $(assembly_source_files))
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.PHONY: all clean run iso
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|
all: $(kernel)
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|
clean:
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|
@rm -r build
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|
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|
run: $(iso)
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|
@qemu-system-x86_64 -curses -cdrom $(iso)
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|
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|
iso: $(iso)
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|
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|
$(iso): $(kernel) $(grub_cfg)
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|
@mkdir -p build/isofiles/boot/grub
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@cp $(kernel) build/isofiles/boot/kernel.bin
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|
@cp $(grub_cfg) build/isofiles/boot/grub
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||||||
|
@grub-mkrescue -o $(iso) build/isofiles -d /usr/lib/grub/i386-pc 2> /dev/null
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|
@rm -r build/isofiles
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|
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|
$(kernel): cargo $(rust_os) $(assembly_object_files) $(linker_script)
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|
@ld -n --gc-sections -T $(linker_script) -o $(kernel) $(assembly_object_files) $(rust_os)
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|
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|
cargo:
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|
@cargo build --target $(target)
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|
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|
build/arch/$(arch)/%.o: src/arch/$(arch)/%.asm
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|
@mkdir -p $(shell dirname $@)
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|
@nasm -felf64 $< -o $@
|
128
boot-original.asm
Normal file
128
boot-original.asm
Normal file
@ -0,0 +1,128 @@
|
|||||||
|
; Copyright 2015 Philipp Oppermann
|
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|
;
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|
; Licensed under the Apache License, Version 2.0 (the "License");
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|
; you may not use this file except in compliance with the License.
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|
; You may obtain a copy of the License at
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|
;
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|
; http://www.apache.org/licenses/LICENSE-2.0
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||||||
|
;
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||||||
|
; Unless required by applicable law or agreed to in writing, software
|
||||||
|
; distributed under the License is distributed on an "AS IS" BASIS,
|
||||||
|
; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||||
|
; See the License for the specific language governing permissions and
|
||||||
|
; limitations under the License.
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||||||
|
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||||||
|
global start
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|
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|
section .text
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|
bits 32
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|
start:
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|
mov esp, stack_top
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|
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|
call check_multiboot
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|
call check_cpuid
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|
call check_long_mode
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|
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|
call setup_page_tables
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|
call enable_paging
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|
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|
; print `OK` to screen
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|
mov dword [0xb8000], 0x2f4b2f4f
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|
hlt
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|
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|
setup_page_tables:
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|
; map first P4 entry to P3 table
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|
mov eax, p3_table
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|
or eax, 0b11 ; present + writable
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|
mov [p4_table], eax
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|
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|
; map first P3 entry to a huge page that starts at address 0
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|
mov dword [p3_table], 0b10000011 ; present + writable + huge
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|
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|
ret
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|
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|
enable_paging:
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|
; load P4 to cr3 register (cpu uses this to access the P4 table)
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||||||
|
mov eax, p4_table
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|
mov cr3, eax
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|
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||||||
|
; enable PAE-flag in cr4 (Physical Address Extension)
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|
mov eax, cr4
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|
or eax, 1 << 5
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|
mov cr4, eax
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|
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|
; set the long mode bit in the EFER MSR (model specific register)
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|
mov ecx, 0xC0000080
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|
rdmsr
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|
or eax, 1 << 8
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|
wrmsr
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||||||
|
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||||||
|
; enable paging in the cr0 register
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|
mov eax, cr0
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|
or eax, 1 << 31
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|
or eax, 1 << 16
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|
mov cr0, eax
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|
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||||||
|
ret
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||||||
|
|
||||||
|
; Prints `ERR: ` and the given error code to screen and hangs.
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|
; parameter: error code (in ascii) in al
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|
error:
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|
mov dword [0xb8000], 0x4f524f45
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|
mov dword [0xb8004], 0x4f3a4f52
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|
mov dword [0xb8008], 0x4f204f20
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|
mov byte [0xb800a], al
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|
hlt
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||||||
|
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|
; Throw error 0 if eax doesn't contain the Multiboot 2 magic value (0x36d76289).
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|
check_multiboot:
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|
cmp eax, 0x36d76289
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|
jne .no_multiboot
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|
ret
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|
.no_multiboot:
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|
mov al, "0"
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|
jmp error
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||||||
|
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||||||
|
; Throw error 1 if the CPU doesn't support the CPUID command.
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||||||
|
check_cpuid:
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|
pushfd ; Store the FLAGS-register.
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|
pop eax ; Restore the A-register.
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||||||
|
mov ecx, eax ; Set the C-register to the A-register.
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|
xor eax, 1 << 21 ; Flip the ID-bit, which is bit 21.
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||||||
|
push eax ; Store the A-register.
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|
popfd ; Restore the FLAGS-register.
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||||||
|
pushfd ; Store the FLAGS-register.
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||||||
|
pop eax ; Restore the A-register.
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||||||
|
push ecx ; Store the C-register.
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||||||
|
popfd ; Restore the FLAGS-register.
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||||||
|
xor eax, ecx ; Do a XOR-operation on the A-register and the C-register.
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||||||
|
jz .no_cpuid ; The zero flag is set, no CPUID.
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||||||
|
ret ; CPUID is available for use.
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||||||
|
.no_cpuid:
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|
mov al, "1"
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|
jmp error
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||||||
|
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||||||
|
; Throw error 2 if the CPU doesn't support Long Mode.
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||||||
|
check_long_mode:
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|
mov eax, 0x80000000 ; Set the A-register to 0x80000000.
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||||||
|
cpuid ; CPU identification.
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|
cmp eax, 0x80000001 ; Compare the A-register with 0x80000001.
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|
jb .no_long_mode ; It is less, there is no long mode.
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|
mov eax, 0x80000000 ; Set the A-register to 0x80000000.
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||||||
|
cpuid ; CPU identification.
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||||||
|
cmp eax, 0x80000001 ; Compare the A-register with 0x80000001.
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||||||
|
jb .no_long_mode ; It is less, there is no long mode.
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|
ret
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||||||
|
.no_long_mode:
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||||||
|
mov al, "2"
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|
jmp error
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||||||
|
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||||||
|
section .bss
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|
align 4096
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|
p4_table:
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||||||
|
resb 4096
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||||||
|
p3_table:
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||||||
|
resb 4096
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||||||
|
stack_bottom:
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||||||
|
resb 64
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||||||
|
stack_top:
|
BIN
build/arch/x86_64/boot.o
Normal file
BIN
build/arch/x86_64/boot.o
Normal file
Binary file not shown.
BIN
build/arch/x86_64/long_mode_init.o
Normal file
BIN
build/arch/x86_64/long_mode_init.o
Normal file
Binary file not shown.
BIN
build/arch/x86_64/multiboot_header.o
Normal file
BIN
build/arch/x86_64/multiboot_header.o
Normal file
Binary file not shown.
BIN
build/kernel-x86_64.bin
Executable file
BIN
build/kernel-x86_64.bin
Executable file
Binary file not shown.
BIN
build/os-x86_64.iso
Normal file
BIN
build/os-x86_64.iso
Normal file
Binary file not shown.
BIN
isofiles/boot/kernel.bin
Executable file
BIN
isofiles/boot/kernel.bin
Executable file
Binary file not shown.
BIN
kernel.bin
Executable file
BIN
kernel.bin
Executable file
Binary file not shown.
BIN
multiboot_header
Normal file
BIN
multiboot_header
Normal file
Binary file not shown.
BIN
multiboot_header.o
Normal file
BIN
multiboot_header.o
Normal file
Binary file not shown.
189
src/arch/x86_64/boot.asm
Normal file
189
src/arch/x86_64/boot.asm
Normal file
@ -0,0 +1,189 @@
|
|||||||
|
global start
|
||||||
|
extern long_mode_start
|
||||||
|
|
||||||
|
section .text
|
||||||
|
bits 32
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||||||
|
start:
|
||||||
|
; move stack pointer register
|
||||||
|
mov esp, stack_top
|
||||||
|
|
||||||
|
call check_multiboot
|
||||||
|
call check_cpuid
|
||||||
|
call check_long_mode
|
||||||
|
|
||||||
|
call set_up_page_tables
|
||||||
|
call enable_paging
|
||||||
|
call set_up_SSE
|
||||||
|
|
||||||
|
lgdt [gdt64.pointer]
|
||||||
|
|
||||||
|
; update selectors
|
||||||
|
; data
|
||||||
|
mov ax, gdt64.data
|
||||||
|
mov ss, ax ; stack selector
|
||||||
|
mov ds, ax ; data selector
|
||||||
|
mov es, ax ; extra selector
|
||||||
|
|
||||||
|
; code
|
||||||
|
jmp gdt64.code:long_mode_start
|
||||||
|
|
||||||
|
|
||||||
|
; print "ERR: " and the given error code to screen and hang
|
||||||
|
error:
|
||||||
|
mov dword [0xb8000], 0x4f524f45
|
||||||
|
mov dword [0xb8004], 0x4f3a4f52
|
||||||
|
mov dword [0xb8008], 0x4f204f20
|
||||||
|
mov byte [0xb800a], al
|
||||||
|
hlt
|
||||||
|
|
||||||
|
check_multiboot:
|
||||||
|
cmp eax, 0x36d76289
|
||||||
|
jne .no_multiboot
|
||||||
|
ret
|
||||||
|
.no_multiboot:
|
||||||
|
mov al, "0"
|
||||||
|
jmp error
|
||||||
|
|
||||||
|
check_cpuid:
|
||||||
|
; Check if CPUID is supported by attempting to flip the ID bit (bit 21)
|
||||||
|
; in the FLAGS register. If we can flip it, CPUID is available.
|
||||||
|
|
||||||
|
; Copy FLAGS in to EAX via stack
|
||||||
|
pushfd
|
||||||
|
pop eax
|
||||||
|
|
||||||
|
; Copy to ECX as well for comparing later on
|
||||||
|
mov ecx, eax
|
||||||
|
|
||||||
|
; Flip the ID bit
|
||||||
|
xor eax, 1 << 21
|
||||||
|
|
||||||
|
; Copy EAX to FLAGS via the stack
|
||||||
|
push eax
|
||||||
|
popfd
|
||||||
|
|
||||||
|
; Restore FLAGS from the old version stored in ECX
|
||||||
|
; (i.e. flipping the ID bit back if it was ever flipped).
|
||||||
|
push ecx
|
||||||
|
popfd
|
||||||
|
|
||||||
|
; Compare EAX and ECX, If they are equal then that means the bit wasn't flipped,
|
||||||
|
; and CPUID is not supported.
|
||||||
|
cmp eax, ecx
|
||||||
|
je .no_cpuid
|
||||||
|
ret
|
||||||
|
.no_cpuid:
|
||||||
|
mov al, "1"
|
||||||
|
jmp error
|
||||||
|
|
||||||
|
check_long_mode:
|
||||||
|
; test if extended processor info is available
|
||||||
|
mov eax, 0x80000000 ; implicit argument for cpuid
|
||||||
|
cpuid ; get highest supported argument
|
||||||
|
cmp eax, 0x80000001 ; it needs to be at least this value
|
||||||
|
jb .no_long_mode ; if it's less, the CPU is too old for long mode
|
||||||
|
|
||||||
|
; use extended info to test if long mode is available
|
||||||
|
mov eax, 0x80000001 ; argument for extended processor info
|
||||||
|
cpuid ; returns various feature bits in ecx and edx
|
||||||
|
test edx, 1 << 29 ; test if the LM-bit is set in the D-register
|
||||||
|
jz .no_long_mode ; If it's not set, there is no long mode
|
||||||
|
ret
|
||||||
|
.no_long_mode:
|
||||||
|
mov al, "2"
|
||||||
|
jmp error
|
||||||
|
|
||||||
|
set_up_page_tables:
|
||||||
|
; map first P4 entry to P3 table
|
||||||
|
mov eax, p3_table
|
||||||
|
or eax, 0b11 ; present + writable
|
||||||
|
mov [p4_table], eax
|
||||||
|
|
||||||
|
; map first P3 entry to P2 table
|
||||||
|
mov eax, p2_table
|
||||||
|
or eax, 0b11 ; present + writable
|
||||||
|
mov [p3_table], eax
|
||||||
|
|
||||||
|
; map each P2 entry to a huge 2MiB page
|
||||||
|
mov ecx, 0
|
||||||
|
|
||||||
|
.map_p2_table:
|
||||||
|
; map ecx-th P2 entry to a huge page that starts at address 2MiB*ecx
|
||||||
|
mov eax, 0x200000 ; 2MiB
|
||||||
|
mul ecx ; start address of ecx-th page
|
||||||
|
or eax, 0b10000011 ; present + writable + huge
|
||||||
|
mov [p2_table + ecx * 8], eax ; map ecx-th entry
|
||||||
|
|
||||||
|
inc ecx ; increase
|
||||||
|
cmp ecx, 512 ; if counter == 512, the whole P2 table is mapped
|
||||||
|
jne .map_p2_table
|
||||||
|
|
||||||
|
ret
|
||||||
|
|
||||||
|
enable_paging:
|
||||||
|
; load P4 to cr3 register (cpu uses this to access the P4 table)
|
||||||
|
mov eax, p4_table
|
||||||
|
mov cr3, eax
|
||||||
|
|
||||||
|
; enable PAE-flag in cr4 (physical address extension)
|
||||||
|
mov eax, cr4
|
||||||
|
or eax, 1 << 5
|
||||||
|
mov cr4, eax
|
||||||
|
|
||||||
|
; set the long mode bit in the EFER MSR (model specific register)
|
||||||
|
mov ecx, 0xC0000080
|
||||||
|
rdmsr
|
||||||
|
or eax, 1 << 8
|
||||||
|
wrmsr
|
||||||
|
|
||||||
|
; enable paging in the cr0 register
|
||||||
|
mov eax, cr0
|
||||||
|
or eax, 1 << 31
|
||||||
|
mov cr0, eax
|
||||||
|
|
||||||
|
ret
|
||||||
|
|
||||||
|
; Check for SSE and enable it, if it's not supported throw error "a"
|
||||||
|
set_up_SSE:
|
||||||
|
; check for SSE
|
||||||
|
mov eax, 0x1
|
||||||
|
cpuid
|
||||||
|
test edx, 1<<25
|
||||||
|
jz .no_SSE
|
||||||
|
|
||||||
|
; enable SSE
|
||||||
|
mov eax, cr0
|
||||||
|
and ax, 0xFFFB ; clear coprocessor emulation CR0.EM
|
||||||
|
or ax, 0x2 ; set coprocessor monitoring CR0.MP
|
||||||
|
mov cr0, eax
|
||||||
|
mov eax, cr4
|
||||||
|
or ax, 3 << 9 ; set CR4.OSFXSR and CR4.OSXMMEXCPT at the same time
|
||||||
|
mov cr4, eax
|
||||||
|
|
||||||
|
ret
|
||||||
|
.no_SSE:
|
||||||
|
mov al, "a"
|
||||||
|
jmp error
|
||||||
|
|
||||||
|
section .rodata
|
||||||
|
gdt64:
|
||||||
|
dq 0 ; zero entry
|
||||||
|
.code: equ $ - gdt64
|
||||||
|
dq (1 << 44) | (1 << 47) | (1 << 41) | (1 << 43) | (1 << 54) ; code segment
|
||||||
|
.data equ $ - gdt64
|
||||||
|
dq (1 << 44) | (1 << 47) | (1 << 41) ; data segment
|
||||||
|
.pointer:
|
||||||
|
dw $ - gdt64 - 1
|
||||||
|
dq gdt64
|
||||||
|
|
||||||
|
section .bss
|
||||||
|
align 4096
|
||||||
|
p4_table:
|
||||||
|
resb 4096
|
||||||
|
p3_table:
|
||||||
|
resb 4096
|
||||||
|
p2_table:
|
||||||
|
resb 4096
|
||||||
|
stack_bottom:
|
||||||
|
resb 64
|
||||||
|
stack_top:
|
7
src/arch/x86_64/grub.cfg
Normal file
7
src/arch/x86_64/grub.cfg
Normal file
@ -0,0 +1,7 @@
|
|||||||
|
set timeout=0
|
||||||
|
set default=0
|
||||||
|
|
||||||
|
menuentry "Mahdi OS :|" {
|
||||||
|
multiboot2 /boot/kernel.bin
|
||||||
|
boot
|
||||||
|
}
|
16
src/arch/x86_64/linker.ld
Normal file
16
src/arch/x86_64/linker.ld
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
ENTRY(start)
|
||||||
|
|
||||||
|
SECTIONS {
|
||||||
|
. = 1M;
|
||||||
|
|
||||||
|
.boot :
|
||||||
|
{
|
||||||
|
/* ensure that the multiboot header is tat the beginning */
|
||||||
|
KEEP(*(.multiboot_header))
|
||||||
|
}
|
||||||
|
|
||||||
|
.text :
|
||||||
|
{
|
||||||
|
*(.text)
|
||||||
|
}
|
||||||
|
}
|
16
src/arch/x86_64/long_mode_init.asm
Normal file
16
src/arch/x86_64/long_mode_init.asm
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
global long_mode_start
|
||||||
|
|
||||||
|
section .text
|
||||||
|
bits 64
|
||||||
|
long_mode_start:
|
||||||
|
extern rust_main
|
||||||
|
call rust_main
|
||||||
|
|
||||||
|
; rust main returned, print `OS returned!`
|
||||||
|
mov rax, 0x4f724f204f534f4f
|
||||||
|
mov [0xb8000], rax
|
||||||
|
mov rax, 0x4f724f754f744f65
|
||||||
|
mov [0xb8008], rax
|
||||||
|
mov rax, 0x4f214f644f654f6e
|
||||||
|
mov [0xb8010], rax
|
||||||
|
hlt
|
14
src/arch/x86_64/multiboot_header.asm
Normal file
14
src/arch/x86_64/multiboot_header.asm
Normal file
@ -0,0 +1,14 @@
|
|||||||
|
section .multiboot_header
|
||||||
|
header_start:
|
||||||
|
dd 0xe85250d6 ; magic number (multiboot 2)
|
||||||
|
dd 0 ; architecture 0 (protected mode i386)
|
||||||
|
dd header_end - header_start ; header length
|
||||||
|
dd 0x100000000 - (0xe85250d6 + 0 + (header_end - header_start)) ; checksum
|
||||||
|
|
||||||
|
; optional tags
|
||||||
|
|
||||||
|
; end tags
|
||||||
|
dw 0 ; type
|
||||||
|
dw 0 ; flags
|
||||||
|
dd 8 ; size
|
||||||
|
header_end:
|
30
src/lib.rs
Normal file
30
src/lib.rs
Normal file
@ -0,0 +1,30 @@
|
|||||||
|
#![feature(lang_items)]
|
||||||
|
#![no_std]
|
||||||
|
|
||||||
|
extern crate rlibc;
|
||||||
|
|
||||||
|
#[no_mangle]
|
||||||
|
pub extern fn rust_main() {
|
||||||
|
// ATTENTION: we have a very small stack and no guard page
|
||||||
|
let hello = b"Hello World!";
|
||||||
|
let color_byte = 0x1f; // white foreground, blue background
|
||||||
|
|
||||||
|
let mut hello_colored = [color_byte; 24];
|
||||||
|
for (i, char_byte) in hello.into_iter().enumerate() {
|
||||||
|
hello_colored[i*2] = *char_byte;
|
||||||
|
}
|
||||||
|
|
||||||
|
let buffer_ptr = (0xb8000 + 1988) as *mut _;
|
||||||
|
unsafe { *buffer_ptr = hello_colored };
|
||||||
|
|
||||||
|
loop {}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[allow(non_snake_case)]
|
||||||
|
#[no_mangle]
|
||||||
|
pub extern "C" fn _Unwind_Resume() -> ! {
|
||||||
|
loop {}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[lang = "eh_personality"] extern fn eh_personality() {}
|
||||||
|
#[lang = "panic_fmt"] extern fn panic_fmt() -> ! { loop {} }
|
0
target/debug/.cargo-lock
Normal file
0
target/debug/.cargo-lock
Normal file
0
target/x86_64-unknown-linux-gnu/debug/.cargo-lock
Normal file
0
target/x86_64-unknown-linux-gnu/debug/.cargo-lock
Normal file
Binary file not shown.
@ -0,0 +1 @@
|
|||||||
|
20518e01a07acda9
|
@ -0,0 +1 @@
|
|||||||
|
{"rustc":6621389328642914105,"target":6192930460042594332,"profile":10749699831569892475,"local":{"variant":"MtimeBased","fields":[[1466853811,226666665],[47,114,111,111,116,47,107,101,114,110,101,108,47,116,97,114,103,101,116,47,120,56,54,95,54,52,45,117,110,107,110,111,119,110,45,108,105,110,117,120,45,103,110,117,47,100,101,98,117,103,47,46,102,105,110,103,101,114,112,114,105,110,116,47,109,97,104,100,105,95,111,115,45,56,52,101,51,51,55,102,51,99,54,57,102,100,55,97,98,47,100,101,112,45,108,105,98,45,109,97,104,100,105,95,111,115]]},"features":"None","deps":[["rlibc v0.1.5",9884570034738440005]],"rustflags":[]}
|
Binary file not shown.
@ -0,0 +1 @@
|
|||||||
|
45270e6e130c2d89
|
@ -0,0 +1 @@
|
|||||||
|
{"rustc":6621389328642914105,"target":9571294117447932849,"profile":10749699831569892475,"local":{"variant":"Precalculated","fields":["0.1.5"]},"features":"None","deps":[],"rustflags":[]}
|
Binary file not shown.
BIN
target/x86_64-unknown-linux-gnu/debug/libmahdi_os.a
Normal file
BIN
target/x86_64-unknown-linux-gnu/debug/libmahdi_os.a
Normal file
Binary file not shown.
0
target/x86_64-unknown-none-gnu/debug/.cargo-lock
Normal file
0
target/x86_64-unknown-none-gnu/debug/.cargo-lock
Normal file
16
x86_64-unknown-none-gnu.json
Normal file
16
x86_64-unknown-none-gnu.json
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
{
|
||||||
|
"llvm-target": "x86_64-unknown-none-gnu",
|
||||||
|
"target-endian": "little",
|
||||||
|
"target-pointer-width": "64",
|
||||||
|
"os": "none",
|
||||||
|
"arch": "x86_64",
|
||||||
|
"data-layout": "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128",
|
||||||
|
"pre-link-args": ["-m64"],
|
||||||
|
"cpu": "x86-64",
|
||||||
|
"features": "-mmx,-sse,-sse2,-sse3,-ssse3",
|
||||||
|
"disable-redzone": true,
|
||||||
|
"eliminate-frame-pointer": false,
|
||||||
|
"linker-is-gnu": true,
|
||||||
|
"no-compiler-rt": true,
|
||||||
|
"archive-format": "gnu"
|
||||||
|
}
|
Loading…
Reference in New Issue
Block a user