/*
 * This file is part of the UCB release of Plan 9. It is subject to the license
 * terms in the LICENSE file found in the top-level directory of this
 * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
 * part of the UCB release of Plan 9, including this file, may be copied,
 * modified, propagated, or distributed except according to the terms contained
 * in the LICENSE file.
 */

#define nil		((void*)0)

typedef	unsigned char	u8;
typedef	signed char	i8;
typedef	unsigned short	u16;
typedef signed short	i16;
typedef	unsigned int	u32;
typedef signed int	i32;
typedef	unsigned long long u64;
typedef signed long long i64;
typedef u64 		usize;
typedef	i64		isize;

typedef	u32	Rune;
typedef union FPdbleword FPdbleword;
typedef u64	jmp_buf[10]; // for registers.

// YUCK but ...
#define YYSIZE_T usize

#define	alignas		_Alignas
#define static_assert	_Static_assert

#define	JMPBUFSP	6
#define	JMPBUFPC	7
#define	JMPBUFARG1	8
#define	JMPBUFARG2	9

#define	JMPBUFDPC	0
typedef unsigned int	mpdigit;	/* for /sys/include/mp.h */

/* MXCSR */
/* fcr */
#define	FPFTZ	(1<<15)	/* amd64 */
#define	FPINEX	(1<<12)
#define	FPUNFL	(1<<11)
#define	FPOVFL	(1<<10)
#define	FPZDIV	(1<<9)
#define	FPDNRM	(1<<8)	/* amd64 */
#define	FPINVAL	(1<<7)
#define	FPDAZ	(1<<6)	/* amd64 */
#define	FPRNR	(0<<13)
#define	FPRZ	(3<<13)
#define	FPRPINF	(2<<13)
#define	FPRNINF	(1<<13)
#define	FPRMASK	(3<<13)
#define	FPPEXT	0
#define	FPPSGL	0
#define	FPPDBL	0
#define	FPPMASK	0
/* fsr */
#define	FPAINEX	(1<<5)
#define	FPAUNFL	(1<<4)
#define	FPAOVFL	(1<<3)
#define	FPAZDIV	(1<<2)
#define	FPADNRM	(1<<1)	/* not in plan 9 */
#define	FPAINVAL	(1<<0)
union FPdbleword
{
	double	x;
	struct {	/* little endian */
		u32 lo;
		u32 hi;
	};
};

/*
#if 0
typedef	char*	va_list;
#define va_start(list, start) list =\
	(sizeof(start) < 8?\
		(char*)((i64*)&(start)+1):\
		(char*)(&(start)+1))
#define va_end(list)\
	USED(list)
#define va_arg(list, mode)\
	((sizeof(mode) == 1)?\
		((list += 8), (mode*)list)[-8]:\
	(sizeof(mode) == 2)?\
		((list += 8), (mode*)list)[-4]:\
	(sizeof(mode) == 4)?\
		((list += 8), (mode*)list)[-2]:\
		((list += sizeof(mode)), (mode*)list)[-1])
#endif
*/

typedef __builtin_va_list va_list;

#define va_start(v,l)	__builtin_va_start(v,l)
#define va_end(v)	__builtin_va_end(v)
#define va_arg(v,l)	__builtin_va_arg(v,l)
#define va_copy(v,l)	__builtin_va_copy(v,l)

#define	getcallerpc()	((usize)__builtin_return_address(0))