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TaiseiIto / hariboslinux

Haribote OSをLinux環境で開発しよう
MIT License
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harib15 #54

Closed TaiseiIto closed 2 years ago

TaiseiIto commented 2 years ago

コンソール画面を実装しよう

TaiseiIto commented 2 years ago

コンソールからの入力とRS232からの入力を共通して受け付けられるshellを作ろう

TaiseiIto commented 2 years ago

Virtual Box でもシリアル入出力に対応するために，名前付きpipeで自作OSと通信するサーバーを作ろう

TaiseiIto commented 2 years ago

Readにタイムアウトを設定する方法があるらしい

TaiseiIto commented 2 years ago

次はexecute_command関数でcommandをパースしてargcとargvを生成しよう

TaiseiIto commented 2 years ago

の前にシリアルポートでもプロンプトを表示させよう

TaiseiIto commented 2 years ago

キーが入力された時の動作もshell.cに統合するか

TaiseiIto commented 2 years ago

Virtual Boxで実行時にtest0.txtのみ正常に表示されないバグ

TaiseiIto commented 2 years ago

load_file関数の直前に命令文を入れると消えるハイゼンバグ 今はまだファイル数が少ないのでこのバグは後回しにしよう

TaiseiIto commented 2 years ago

シリアル出力

kernel.bin
        updated time 2022/04/09 19:48:24
        size 0x0001c370 bytes
        cluster number 0x0011

に対して，kernel.mapを見ると，

.bss            0x0000000000122380      0x11c
 COMMON         0x0000000000122380       0x18 disk.o
                0x0000000000122380                first_sector
                0x0000000000122384                cluster_size
                0x0000000000122388                root_directory_entries
                0x000000000012238c                file_allocation_tables
                0x0000000000122390                number_of_clusters
                0x0000000000122394                cluster0
 COMMON         0x0000000000122398        0x4 gdt.o
                0x0000000000122398                kernel_code_segment_selector
                0x000000000012239a                whole_memory_segment_selector
 COMMON         0x000000000012239c        0x4 graphic.o
                0x000000000012239c                vram
 COMMON         0x00000000001223a0        0xc keyboard.o
                0x00000000001223a0                keyboard_send_buffer
                0x00000000001223a4                last_keyboard_transmission
                0x00000000001223a8                keyboard_interrupt_queue
 COMMON         0x00000000001223ac        0x4 memory.o
                0x00000000001223ac                root_memory_section
 COMMON         0x00000000001223b0       0x1c mouse.o
                0x00000000001223b0                mouse_event
                0x00000000001223c4                mouse_id
                0x00000000001223c8                mouse_interrupt_queue
 COMMON         0x00000000001223cc        0x4 pit.o
                0x00000000001223cc                pit_interrupt_queue
 COMMON         0x00000000001223d0        0x5 rtc.o
                0x00000000001223d0                rtc_interrupt_queue
                0x00000000001223d4                status_register_b
 *fill*         0x00000000001223d5        0x3
 COMMON         0x00000000001223d8        0x8 serial.o
                0x00000000001223d8                serial_interrupt_queue
                0x00000000001223dc                com1_transmission_queue
 COMMON         0x00000000001223e0       0xbc task.o
                0x00000000001223e0                main_task_level
                0x00000000001223f0                current_task_level
                0x00000000001223f4                highest_task_level
                0x0000000000122400                main_task
                0x0000000000122498                lowest_task_level

test0.txtは0x00122400に読み込まれているが，それとmain_task, lowest_task_levelが重なってしまっている．

TaiseiIto commented 2 years ago

システムコールexitを実装しよう

TaiseiIto commented 2 years ago

ELFフォーマットについて勉強しよう

TaiseiIto commented 2 years ago

https://wiki.osdev.org/ELF

TaiseiIto commented 2 years ago 
ELF magic number is correct.
ELF sign is "ELF".
32 bits CPU
Endian = Little endian
ELF header version = 0x01
ABI = 0x00
Ability = Executable
Instruction set = x86
ELF version = 0x00000001
Entry point = 0x08049018
Program header table = 0x00000034
Section header table = 0x00003198
Flags = 0x00000000
Header size = 0x0034
Program header table entry size = 0x0020
Number of program header table entries = 0x0007
Section header table entry size = 0x0028
Number of section header table entries = 0x0009
Section names entry index = 0x0008
TaiseiIto commented 2 years ago

https://refspecs.linuxbase.org/elf/gabi4+/ch4.sheader.html

TaiseiIto commented 2 years ago 
ELF magic number is correct.
ELF sign is "ELF".
32 bits CPU
Endian = Little endian
ELF header version = 0x01
ABI = 0x00
Ability = Executable
Instruction set = x86
ELF version = 0x00000001
Entry point = 0x08049018
Program header = 0x00000034
Section header = 0x00003198
Flags = 0x00000000
ELF header size = 0x0034
Program header size = 0x0020
Number of program headers = 0x0007
Section header size = 0x0028
Number of section headers = 0x0009
Section names header index = 0x0008
Program Header [0x0000]
    Segment type Load
    Offset in file = 0x00000000
    Deployment destination = 0x08048000
    Size in file = 0x0000013c
    Size in memory = 0x0000013c
    Flags : Readable
    Alignment = 0x00001000
Program Header [0x0001]
    Segment type Load
    Offset in file = 0x00001000
    Deployment destination = 0x08049000
    Size in file = 0x00000036
    Size in memory = 0x00000036
    Flags : Executable Readable
    Alignment = 0x00001000
Program Header [0x0002]
    Segment type Load
    Offset in file = 0x00002000
    Deployment destination = 0x0804a000
    Size in file = 0x00000070
    Size in memory = 0x00000070
    Flags : Readable
    Alignment = 0x00001000
Program Header [0x0003]
    Segment type Load
    Offset in file = 0x00003000
    Deployment destination = 0x0804c000
    Size in file = 0x0000000c
    Size in memory = 0x0000000c
    Flags : Writable Readable
    Alignment = 0x00001000
Program Header [0x0004]
    Segment type Note
    Offset in file = 0x00000114
    Deployment destination = 0x08048114
    Size in file = 0x00000028
    Size in memory = 0x00000028
    Flags : Readable
    Alignment = 0x00000004
Program Header [0x0005]
    Segment type Invalid
    Offset in file = 0x00000114
    Deployment destination = 0x08048114
    Size in file = 0x00000028
    Size in memory = 0x00000028
    Flags : Readable
    Alignment = 0x00000004
Program Header [0x0006]
    Segment type Invalid
    Offset in file = 0x00000000
    Deployment destination = 0x00000000
    Size in file = 0x00000000
    Size in memory = 0x00000000
    Flags : Writable Readable
    Alignment = 0x00000010
Section Header [0x0000]
    Name index = 0x00000000
    Segment type NULL
    Flags :
    Deployment destination = 0x00000000
    Offset in file = 0x00000000
    Size = 0x00000000
    Linked section header index = 0x00000000
    Extra information = 0x00000000
    Alignment = 0x00000000
    Entry size = 0x00000000
Section Header [0x0001]
    Name index = 0x0000001b
    Segment type NOTE
    Flags : ALLOC
    Deployment destination = 0x08048114
    Offset in file = 0x00000114
    Size = 0x00000028
    Linked section header index = 0x00000000
    Extra information = 0x00000000
    Alignment = 0x00000004
    Entry size = 0x00000000
Section Header [0x0002]
    Name index = 0x0000002e
    Segment type PROGBITS
    Flags : ALLOC EXECINSTR
    Deployment destination = 0x08049000
    Offset in file = 0x00001000
    Size = 0x00000036
    Linked section header index = 0x00000000
    Extra information = 0x00000000
    Alignment = 0x00000001
    Entry size = 0x00000000
Section Header [0x0003]
    Name index = 0x00000034
    Segment type PROGBITS
    Flags : ALLOC
    Deployment destination = 0x0804a000
    Offset in file = 0x00002000
    Size = 0x00000070
    Linked section header index = 0x00000000
    Extra information = 0x00000000
    Alignment = 0x00000004
    Entry size = 0x00000000
Section Header [0x0004]
    Name index = 0x0000003e
    Segment type PROGBITS
    Flags : WRITE ALLOC
    Deployment destination = 0x0804c000
    Offset in file = 0x00003000
    Size = 0x0000000c
    Linked section header index = 0x00000000
    Extra information = 0x00000000
    Alignment = 0x00000004
    Entry size = 0x00000004
Section Header [0x0005]
    Name index = 0x00000047
    Segment type PROGBITS
    Flags : MERGE STRINGS
    Deployment destination = 0x00000000
    Offset in file = 0x0000300c
    Size = 0x00000031
    Linked section header index = 0x00000000
    Extra information = 0x00000000
    Alignment = 0x00000001
    Entry size = 0x00000001
Section Header [0x0006]
    Name index = 0x00000001
    Segment type SYMTAB
    Flags :
    Deployment destination = 0x00000000
    Offset in file = 0x00003040
    Size = 0x000000b0
    Linked section header index = 0x00000007
    Extra information = 0x00000005
    Alignment = 0x00000004
    Entry size = 0x00000010
Section Header [0x0007]
    Name index = 0x00000009
    Segment type STRTAB
    Flags :
    Deployment destination = 0x00000000
    Offset in file = 0x000030f0
    Size = 0x00000056
    Linked section header index = 0x00000000
    Extra information = 0x00000000
    Alignment = 0x00000001
    Entry size = 0x00000000
Section Header [0x0008]
    Name index = 0x00000011
    Segment type STRTAB
    Flags :
    Deployment destination = 0x00000000
    Offset in file = 0x00003146
    Size = 0x00000050
    Linked section header index = 0x00000000
    Extra information = 0x00000000
    Alignment = 0x00000001
    Entry size = 0x00000000
TaiseiIto commented 2 years ago

メモリの二重開放がどこかで起きている

TaiseiIto commented 2 years ago

com_taskの作成していないタスクキューを開放している