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osmit's Introduction

OSmit

Implement a simple operating system.

TODO

  • Initialized Kernel
    • Set up GDT
    • Set up IDT
  • Interrupts
    • Traps
    • IRQ
  • Memory Management
    • Paging
  • Process Management

Execution

$ cd boot
$ make
# run on qemu-system-i386
$ make qemu

Debugging

# set remote gdb server on localhost:1234
$ make gdb

$ gdb

$(gdb) file boot.elf
$(gdb) target remote :1234

# looks up help
$(gdb) help

# example : set break point
$(gdb) b * _start 

# example : next instruction
$(gdb) si

# example : continue, remote gdb can't use run, use continue instead
$(gdb) continue

Compilation

Not so serious to build own cross-compilation toolchain(binutils, gcc), use flags in gcc, ld instead.

I.e. -march=i386, -m32

License

MIT

Author

@tz70s

osmit's People

Contributors

tz70s avatar

Watchers

James Cloos avatar  avatar

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