nexoniarz/SchOS
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Initial commit: Schunix as it stands before the SchOS rename

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An x86-64 operating system built from xv6, now largely rewritten: SMP,
a copy-on-write root filesystem (SchFS), PCI/USB/virtio drivers, a TTF
rasteriser, and a Linux-numbered syscall ABI.

No history before this point -- the tree was never under version control.
This commit exists so the rename that follows has something to undo to.
This commit is contained in:
Nexoniarz 2026-08-09 13:47:01 +02:00
commit d0f7acf9eb
275 changed files with 51417 additions and 0 deletions
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79
include/types.h Normal file
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#pragma once
typedef unsigned int uint;
typedef unsigned short ushort;
typedef unsigned char uchar;
typedef unsigned char uint8;
typedef unsigned short uint16;
typedef unsigned int uint32;
typedef signed char int8;
typedef signed short int16;
typedef signed int int32;
// uint64 has to be 64 bits everywhere this header is used, and `unsigned long`
// is not that everywhere. Linux and the x86_64-elf kernel target are LP64, so
// long is 64-bit; Windows is LLP64, where long is 32-bit and only long long is
// 64-bit.
//
// This matters far more than a portability nicety. The host tools -- mkfs,
// mkschfs, the SchFS suites -- include this header *and* the on-disk structure
// definitions in fs.h and schfs.h. Building them on Windows with a 32-bit
// uint64 does not fail: it quietly produces images whose inode numbers, sizes
// and block pointers are half the width the kernel reads back, which shows up
// as a corrupt filesystem long after the tool that wrote it has exited.
//
// Spelled as long/long long rather than <stdint.h>'s uint64_t so the `%l`
// format specifiers used throughout the kernel stay correct and untouched.
// Conditioned on the actual width of `long` rather than on the platform,
// because there are three cases and only one of them is about Windows:
// x86_64-elf / Linux LP64 -> long is 64-bit
// Windows LLP64 -> long is 32-bit, long long is 64
// i386-elf (boot/) ILP32 -> long is 32-bit, and stage2main.c includes
// this header too
#if defined(__SIZEOF_LONG__) && __SIZEOF_LONG__ == 8
typedef unsigned long uint64;
typedef signed long int64;
#else
typedef unsigned long long uint64;
typedef signed long long int64;
#endif
// Belt and braces: if the above is ever wrong on some new host, say so at
// compile time rather than in a filesystem image.
_Static_assert(sizeof(uint64) == 8, "uint64 must be 64 bits");
_Static_assert(sizeof(int64) == 8, "int64 must be 64 bits");
typedef uint64 uintptr_t;
typedef int64 intptr_t;
typedef int64 ptrdiff_t;
typedef uint64 addr_t;
typedef uint64 size_t;
typedef int64 ssize_t;
#ifndef MKFS
#ifndef _SIGSET_T
#define _SIGSET_T
typedef uint64 sigset_t;
#endif
#endif
typedef addr_t pte_t;
typedef addr_t pde_t;
typedef addr_t pdpe_t;
typedef addr_t pml4e_t;
struct mouse_data {
int x;
int y;
uint8 buttons;
};
#ifndef NULL
#define NULL ((void*)0)
#endif
#define TRUE 1
#define FALSE 0