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https://github.com/Tom-on64/kern.git
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Tom-on
536f6b2320
- Chenged Puts() syscall to Write() - Improved syscalls.h - added a new header in terminal/terminal.h - moved gfxMode into screen/gfxmode.h
27 lines
669 B
Plaintext
27 lines
669 B
Plaintext
=== System Calls ===
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Syscall handlers are prefixed by 'sys_'
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Syscalls can be called using interrupt 0x80
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The EAX register should countain a syscall number on calling and it will contain a return value (if applicable) after calling
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Here's a list of syscalls: (and their numbers)
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Syscall(0) : Sleep()
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Args: EBX - Number of miliseconds to sleep for
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Syscall(1) : Write()
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Args: EBX - File descriptor
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ECX - Buffer to write
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EDX - Length
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Returns: Status
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Syscall(2) : Read() #TBD
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Syscall(3) : Malloc()
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Args: EBX - Amount of bytes to malloc
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Returns: Address of allocated memory
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Syscall(4) : Free()
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Args: EBX - Pointer to free
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