xref: /inferno-os/Inferno/386/include/u.h (revision e45fa0eb0763b57d6fb0649c064bc3b95ccdea6c)
1 #define nil		((void*)0)
2 typedef	unsigned short	ushort;
3 typedef	unsigned char	uchar;
4 typedef unsigned long	ulong;
5 typedef unsigned int	uint;
6 typedef   signed char	schar;
7 typedef	long long	vlong;
8 typedef	unsigned long long uvlong;
9 typedef unsigned long	uintptr;
10 typedef	uint		Rune;
11 typedef union FPdbleword FPdbleword;
12 typedef long		jmp_buf[2];
13 #define	JMPBUFSP	0
14 #define	JMPBUFPC	1
15 #define	JMPBUFDPC	0
16 typedef unsigned int	mpdigit;	/* for /sys/include/mp.h */
17 typedef unsigned char	u8int;
18 typedef unsigned short	u16int;
19 typedef unsigned int	u32int;
20 typedef unsigned long long u64int;
21 
22 /* FCR */
23 #define	FPINEX	(1<<5)
24 #define	FPUNFL	((1<<4)|(1<<1))
25 #define	FPOVFL	(1<<3)
26 #define	FPZDIV	(1<<2)
27 #define	FPINVAL	(1<<0)
28 #define	FPRNR	(0<<10)
29 #define	FPRZ	(3<<10)
30 #define	FPRPINF	(2<<10)
31 #define	FPRNINF	(1<<10)
32 #define	FPRMASK	(3<<10)
33 #define	FPPEXT	(3<<8)
34 #define	FPPSGL	(0<<8)
35 #define	FPPDBL	(2<<8)
36 #define	FPPMASK	(3<<8)
37 /* FSR */
38 #define	FPAINEX	FPINEX
39 #define	FPAOVFL	FPOVFL
40 #define	FPAUNFL	FPUNFL
41 #define	FPAZDIV	FPZDIV
42 #define	FPAINVAL	FPINVAL
43 union FPdbleword
44 {
45 	double	x;
46 	struct {	/* little endian */
47 		ulong lo;
48 		ulong hi;
49 	};
50 };
51 
52 typedef	char*	va_list;
53 #define va_start(list, start) list =\
54 	(sizeof(start) < 4?\
55 		(char*)((int*)&(start)+1):\
56 		(char*)(&(start)+1))
57 #define va_end(list)\
58 	USED(list)
59 #define va_arg(list, mode)\
60 	((sizeof(mode) == 1)?\
61 		((mode*)(list += 4))[-4]:\
62 	(sizeof(mode) == 2)?\
63 		((mode*)(list += 4))[-2]:\
64 		((mode*)(list += sizeof(mode)))[-1])
65