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c906108c SS |
1 | /* If we're being compiled as a .c file, rather than being included in |
2 | d10v_sim.h, then ENDIAN_INLINE won't be defined yet. */ | |
3 | ||
4 | #ifndef ENDIAN_INLINE | |
5 | #define NO_ENDIAN_INLINE | |
6 | #include "d10v_sim.h" | |
7 | #define ENDIAN_INLINE | |
8 | #endif | |
9 | ||
10 | ENDIAN_INLINE uint16 | |
11 | get_word (x) | |
12 | uint8 *x; | |
13 | { | |
14 | #if (defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)) && defined(__GNUC__) | |
15 | ||
16 | unsigned short word = *(unsigned short *)x; | |
17 | __asm__ ("xchgb %b0,%h0" : "=q" (word) : "0" (word)); | |
18 | return word; | |
19 | ||
20 | #elif defined(WORDS_BIGENDIAN) | |
21 | /* It is safe to do this on big endian hosts, since the d10v requires that words be | |
22 | aligned on 16-bit boundaries. */ | |
23 | return *(uint16 *)x; | |
24 | ||
25 | #else | |
26 | return ((uint16)x[0]<<8) + x[1]; | |
27 | #endif | |
28 | } | |
29 | ||
30 | ENDIAN_INLINE uint32 | |
31 | get_longword (x) | |
32 | uint8 *x; | |
33 | { | |
34 | #if (defined(__i486__) || defined(__i586__) || defined(__i686__)) && defined(__GNUC__) && defined(USE_BSWAP) | |
35 | ||
36 | unsigned int long_word = *(unsigned *)x; | |
37 | __asm__ ("bswap %0" : "=r" (long_word) : "0" (long_word)); | |
38 | return long_word; | |
39 | ||
40 | #elif (defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)) && defined(__GNUC__) | |
41 | ||
42 | unsigned int long_word = *(unsigned *)x; | |
43 | __asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */ | |
44 | "rorl $16,%0\n\t" /* swap words */ | |
45 | "xchgb %b0,%h0" /* swap higher bytes */ | |
46 | :"=q" (long_word) | |
47 | : "0" (long_word)); | |
48 | ||
49 | return long_word; | |
50 | ||
51 | #elif (defined(_POWER) && defined(_AIX)) || (defined(__PPC__) && defined(__BIG_ENDIAN__)) | |
52 | /* Power & PowerPC computers in big endian mode can handle unaligned loads&stores */ | |
53 | return *(uint32 *)x; | |
54 | ||
55 | #elif defined(WORDS_BIGENDIAN) | |
56 | /* long words must be aligned on at least 16-bit boundaries, so this should be safe. */ | |
57 | return (((uint32) *(uint16 *)x)<<16) | ((uint32) *(uint16 *)(x+2)); | |
58 | ||
59 | #else | |
60 | return ((uint32)x[0]<<24) + ((uint32)x[1]<<16) + ((uint32)x[2]<<8) + ((uint32)x[3]); | |
61 | #endif | |
62 | } | |
63 | ||
64 | ENDIAN_INLINE int64 | |
65 | get_longlong (x) | |
66 | uint8 *x; | |
67 | { | |
68 | uint32 top = get_longword (x); | |
69 | uint32 bottom = get_longword (x+4); | |
70 | return (((int64)top)<<32) | (int64)bottom; | |
71 | } | |
72 | ||
73 | ENDIAN_INLINE void | |
74 | write_word (addr, data) | |
75 | uint8 *addr; | |
76 | uint16 data; | |
77 | { | |
78 | #if (defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)) && defined(__GNUC__) | |
79 | ||
80 | __asm__ ("xchgb %b0,%h0" : "=q" (data) : "0" (data)); | |
81 | *(uint16 *)addr = data; | |
82 | ||
83 | #elif defined(WORDS_BIGENDIAN) | |
84 | /* It is safe to do this on big endian hosts, since the d10v requires that words be | |
85 | aligned on 16-bit boundaries. */ | |
86 | *(uint16 *)addr = data; | |
87 | ||
88 | #else | |
89 | addr[0] = (data >> 8) & 0xff; | |
90 | addr[1] = data & 0xff; | |
91 | #endif | |
92 | } | |
93 | ||
94 | ENDIAN_INLINE void | |
95 | write_longword (addr, data) | |
96 | uint8 *addr; | |
97 | uint32 data; | |
98 | { | |
99 | #if (defined(__i486__) || defined(__i586__) || defined(__i686__)) && defined(__GNUC__) && defined(USE_BSWAP) | |
100 | ||
101 | __asm__ ("bswap %0" : "=r" (data) : "0" (data)); | |
102 | *(uint32 *)addr = data; | |
103 | ||
104 | #elif (defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)) && defined(__GNUC__) | |
105 | ||
106 | __asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */ | |
107 | "rorl $16,%0\n\t" /* swap words */ | |
108 | "xchgb %b0,%h0" /* swap higher bytes */ | |
109 | :"=q" (data) | |
110 | : "0" (data)); | |
111 | ||
112 | *(uint32 *)addr = data; | |
113 | ||
114 | #elif (defined(_POWER) && defined(_AIX)) || (defined(__PPC__) && defined(__BIG_ENDIAN__)) | |
115 | /* Power & PowerPC computers in big endian mode can handle unaligned loads&stores */ | |
116 | *(uint32 *)addr = data; | |
117 | ||
118 | #elif defined(WORDS_BIGENDIAN) | |
119 | *(uint16 *)addr = (uint16)(data >> 16); | |
120 | *(uint16 *)(addr + 2) = (uint16)data; | |
121 | ||
122 | #else | |
123 | addr[0] = (data >> 24) & 0xff; | |
124 | addr[1] = (data >> 16) & 0xff; | |
125 | addr[2] = (data >> 8) & 0xff; | |
126 | addr[3] = data & 0xff; | |
127 | #endif | |
128 | } | |
129 | ||
130 | ENDIAN_INLINE void | |
131 | write_longlong (addr, data) | |
132 | uint8 *addr; | |
133 | int64 data; | |
134 | { | |
135 | write_longword (addr, (uint32)(data >> 32)); | |
136 | write_longword (addr+4, (uint32)data); | |
137 | } |