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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [include/] [asm-alpha/] [byteorder.h] - Blame information for rev 1775

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#ifndef _ALPHA_BYTEORDER_H
#define _ALPHA_BYTEORDER_H
 
#undef ntohl
#undef ntohs
#undef htonl
#undef htons
 
#ifndef __LITTLE_ENDIAN
#define __LITTLE_ENDIAN
#endif
 
#ifndef __LITTLE_ENDIAN_BITFIELD
#define __LITTLE_ENDIAN_BITFIELD
#endif
 
extern unsigned long int        ntohl(unsigned long int);
extern unsigned short int       ntohs(unsigned short int);
extern unsigned long int        htonl(unsigned long int);
extern unsigned short int       htons(unsigned short int);
 
extern unsigned long int        __ntohl(unsigned long int);
extern unsigned short int       __ntohs(unsigned short int);
 
#ifdef __GNUC__
 
extern unsigned long int        __constant_ntohl(unsigned long int);
extern unsigned short int       __constant_ntohs(unsigned short int);
 
/*
 * The constant and non-constant versions here are the same.
 * Maybe I'll come up with an alpha-optimized routine for the
 * non-constant ones (the constant ones don't need it: gcc
 * will optimize it to the correct constant)
 */
 
extern __inline__ unsigned long int
__ntohl(unsigned long int x)
{
        unsigned long int res, t1, t2;
 
        __asm__(
        "# bswap input: %0 (aabbccdd)\n\t"
        "# output: %0, used %1 %2\n\t"
        "extlh  %0,5,%1         # %1 = dd000000\n\t"
        "zap    %0,0xfd,%2      # %2 = 0000cc00\n\t"
        "sll    %2,5,%2         # %2 = 00198000\n\t"
        "s8addq %2,%1,%1        # %1 = ddcc0000\n\t"
        "zap    %0,0xfb,%2      # %2 = 00bb0000\n\t"
        "srl    %2,8,%2         # %2 = 0000bb00\n\t"
        "extbl  %0,3,%0         # %0 = 000000aa\n\t"
        "or     %1,%0,%0        # %0 = ddcc00aa\n\t"
        "or     %2,%0,%0        # %0 = ddccbbaa\n"
        : "r="(res), "r="(t1), "r="(t2)
        : "0" (x & 0xffffffffUL));
        return res;
}
 
#define __constant_ntohl(x) \
   ((unsigned long int)((((x) & 0x000000ffUL) << 24) | \
                        (((x) & 0x0000ff00UL) <<  8) | \
                        (((x) & 0x00ff0000UL) >>  8) | \
                        (((x) & 0xff000000UL) >> 24)))
 
extern __inline__ unsigned short int
__ntohs(unsigned short int x)
{
        unsigned long int res, t1;
 
        __asm__(
        "# v0 is result; swap in-place.\n\t"
        "bis    %2,%2,%0        # v0 = aabb\n\t"
        "extwh  %0,7,%1         # t1 = bb00\n\t"
        "extbl  %0,1,%0         # v0 = 00aa\n\t"
        "bis    %0,%1,%0        # v0 = bbaa\n"
        : "r="(res), "r="(t1) : "r"(x));
        return res;
}
 
#define __constant_ntohs(x) \
((unsigned short int)((((unsigned short int)(x) & 0x00ff) << 8) | \
                      (((unsigned short int)(x) & 0xff00) >> 8)))
 
#define __htonl(x) __ntohl(x)
#define __htons(x) __ntohs(x)
#define __constant_htonl(x) __constant_ntohl(x)
#define __constant_htons(x) __constant_ntohs(x)
 
#ifdef  __OPTIMIZE__
#  define ntohl(x) \
(__builtin_constant_p((long)(x)) ? \
 __constant_ntohl((x)) : \
 __ntohl((x)))
#  define ntohs(x) \
(__builtin_constant_p((short)(x)) ? \
 __constant_ntohs((x)) : \
 __ntohs((x)))
#  define htonl(x) \
(__builtin_constant_p((long)(x)) ? \
 __constant_htonl((x)) : \
 __htonl((x)))
#  define htons(x) \
(__builtin_constant_p((short)(x)) ? \
 __constant_htons((x)) : \
 __htons((x)))
#endif /* __OPTIMIZE__ */
 
#endif /* __GNUC__ */
 
#endif /* _ALPHA_BYTEORDER_H */

Line No.	Rev	Author	Line
1	199	simons	`#ifndef _ALPHA_BYTEORDER_H`
2			`#define _ALPHA_BYTEORDER_H`
3
4			`#undef ntohl`
5			`#undef ntohs`
6			`#undef htonl`
7			`#undef htons`
8
9			`#ifndef __LITTLE_ENDIAN`
10			`#define __LITTLE_ENDIAN`
11			`#endif`
12
13			`#ifndef __LITTLE_ENDIAN_BITFIELD`
14			`#define __LITTLE_ENDIAN_BITFIELD`
15			`#endif`
16
17			`extern unsigned long int ntohl(unsigned long int);`
18			`extern unsigned short int ntohs(unsigned short int);`
19			`extern unsigned long int htonl(unsigned long int);`
20			`extern unsigned short int htons(unsigned short int);`
21
22			`extern unsigned long int __ntohl(unsigned long int);`
23			`extern unsigned short int __ntohs(unsigned short int);`
24
25			`#ifdef __GNUC__`
26
27			`extern unsigned long int __constant_ntohl(unsigned long int);`
28			`extern unsigned short int __constant_ntohs(unsigned short int);`
29
30			`/*`
31			`* The constant and non-constant versions here are the same.`
32			`* Maybe I'll come up with an alpha-optimized routine for the`
33			`* non-constant ones (the constant ones don't need it: gcc`
34			`* will optimize it to the correct constant)`
35			`*/`
36
37			`extern __inline__ unsigned long int`
38			`__ntohl(unsigned long int x)`
39			`{`
40			`unsigned long int res, t1, t2;`
41
42			`__asm__(`
43			`"# bswap input: %0 (aabbccdd)\n\t"`
44			`"# output: %0, used %1 %2\n\t"`
45			`"extlh %0,5,%1 # %1 = dd000000\n\t"`
46			`"zap %0,0xfd,%2 # %2 = 0000cc00\n\t"`
47			`"sll %2,5,%2 # %2 = 00198000\n\t"`
48			`"s8addq %2,%1,%1 # %1 = ddcc0000\n\t"`
49			`"zap %0,0xfb,%2 # %2 = 00bb0000\n\t"`
50			`"srl %2,8,%2 # %2 = 0000bb00\n\t"`
51			`"extbl %0,3,%0 # %0 = 000000aa\n\t"`
52			`"or %1,%0,%0 # %0 = ddcc00aa\n\t"`
53			`"or %2,%0,%0 # %0 = ddccbbaa\n"`
54			`: "r="(res), "r="(t1), "r="(t2)`
55			`: "0" (x & 0xffffffffUL));`
56			`return res;`
57			`}`
58
59			`#define __constant_ntohl(x) \`
60			`((unsigned long int)((((x) & 0x000000ffUL) << 24) \| \`
61			`(((x) & 0x0000ff00UL) << 8) \| \`
62			`(((x) & 0x00ff0000UL) >> 8) \| \`
63			`(((x) & 0xff000000UL) >> 24)))`
64
65			`extern __inline__ unsigned short int`
66			`__ntohs(unsigned short int x)`
67			`{`
68			`unsigned long int res, t1;`
69
70			`__asm__(`
71			`"# v0 is result; swap in-place.\n\t"`
72			`"bis %2,%2,%0 # v0 = aabb\n\t"`
73			`"extwh %0,7,%1 # t1 = bb00\n\t"`
74			`"extbl %0,1,%0 # v0 = 00aa\n\t"`
75			`"bis %0,%1,%0 # v0 = bbaa\n"`
76			`: "r="(res), "r="(t1) : "r"(x));`
77			`return res;`
78			`}`
79
80			`#define __constant_ntohs(x) \`
81			`((unsigned short int)((((unsigned short int)(x) & 0x00ff) << 8) \| \`
82			`(((unsigned short int)(x) & 0xff00) >> 8)))`
83
84			`#define __htonl(x) __ntohl(x)`
85			`#define __htons(x) __ntohs(x)`
86			`#define __constant_htonl(x) __constant_ntohl(x)`
87			`#define __constant_htons(x) __constant_ntohs(x)`
88
89			`#ifdef __OPTIMIZE__`
90			`# define ntohl(x) \`
91			`(__builtin_constant_p((long)(x)) ? \`
92			`__constant_ntohl((x)) : \`
93			`__ntohl((x)))`
94			`# define ntohs(x) \`
95			`(__builtin_constant_p((short)(x)) ? \`
96			`__constant_ntohs((x)) : \`
97			`__ntohs((x)))`
98			`# define htonl(x) \`
99			`(__builtin_constant_p((long)(x)) ? \`
100			`__constant_htonl((x)) : \`
101			`__htonl((x)))`
102			`# define htons(x) \`
103			`(__builtin_constant_p((short)(x)) ? \`
104			`__constant_htons((x)) : \`
105			`__htons((x)))`
106			`#endif /* __OPTIMIZE__ */`
107
108			`#endif /* __GNUC__ */`
109
110			`#endif /* _ALPHA_BYTEORDER_H */`

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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [include/] [asm-alpha/] [byteorder.h] - Blame information for rev 1775