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
10ENDIAN_INLINE uint16
11get_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
30ENDIAN_INLINE uint32
31get_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
64ENDIAN_INLINE int64
65get_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
73ENDIAN_INLINE void
74write_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
94ENDIAN_INLINE void
95write_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
130ENDIAN_INLINE void
131write_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}
138