#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