libcdio  0.93
bytesex_asm.h
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1 /*
2  Copyright (C) 2008, 2012 Rocky Bernstein <rocky@gnu.org>
3  2001, 2004, 2005 Herbert Valerio Riedel <hvr@gnu.org>
4  2001 Sven Ottemann <ac-logic@freenet.de>
5 
6  This program is free software: you can redistribute it and/or modify
7  it under the terms of the GNU General Public License as published by
8  the Free Software Foundation, either version 3 of the License, or
9  (at your option) any later version.
10 
11  This program is distributed in the hope that it will be useful,
12  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  GNU General Public License for more details.
15 
16  You should have received a copy of the GNU General Public License
17  along with this program. If not, see <http://www.gnu.org/licenses/>.
18 */
19 
27 #ifndef CDIO_BYTESEX_ASM_H_
28 #define CDIO_BYTESEX_ASM_H_
29 #if !defined(DISABLE_ASM_OPTIMIZE)
30 
31 #include <cdio/types.h>
32 
33 #if !defined CDIO_INLINE
34 #if defined(__cplusplus) || defined(inline)
35 #define CDIO_INLINE inline
36 #elif defined(__GNUC__)
37 #define CDIO_INLINE __inline__
38 #elif defined(_MSC_VER)
39 #define CDIO_INLINE __inline
40 #else
41 #define CDIO_INLINE
42 #endif
43 #endif /* CDIO_INLINE */
44 
45 #if defined(__powerpc__) && defined(__GNUC__)
46 
47 static CDIO_INLINE
48 uint32_t uint32_swap_le_be_asm(const uint32_t a)
49 {
50  uint32_t b;
51 
52  __asm__ ("lwbrx %0,0,%1"
53  :"=r"(b)
54  :"r"(&a), "m"(a));
55 
56  return b;
57 }
58 
59 static CDIO_INLINE
60 uint16_t uint16_swap_le_be_asm(const uint16_t a)
61 {
62  uint32_t b;
63 
64  __asm__ ("lhbrx %0,0,%1"
65  :"=r"(b)
66  :"r"(&a), "m"(a));
67 
68  return b;
69 }
70 
71 #define UINT16_SWAP_LE_BE uint16_swap_le_be_asm
72 #define UINT32_SWAP_LE_BE uint32_swap_le_be_asm
73 
74 #elif defined(__mc68000__) && defined(__STORMGCC__)
75 
76 static CDIO_INLINE
77 uint32_t uint32_swap_le_be_asm(uint32_t a __asm__("d0"))
78 {
79  /* __asm__("rolw #8,%0; swap %0; rolw #8,%0" : "=d" (val) : "0" (val)); */
80 
81  __asm__("move.l %1,d0;rol.w #8,d0;swap d0;rol.w #8,d0;move.l d0,%0"
82  :"=r"(a)
83  :"r"(a));
84 
85  return(a);
86 }
87 
88 static CDIO_INLINE
89 uint16_t uint16_swap_le_be_asm(uint16_t a __asm__("d0"))
90 {
91  __asm__("move.l %1,d0;rol.w #8,d0;move.l d0,%0"
92  :"=r"(a)
93  :"r"(a));
94 
95  return(a);
96 }
97 
98 #define UINT16_SWAP_LE_BE uint16_swap_le_be_asm
99 #define UINT32_SWAP_LE_BE uint32_swap_le_be_asm
100 
101 #elif 0 && defined(__i386__) && defined(__GNUC__)
102 
103 static CDIO_INLINE
104 uint32_t uint32_swap_le_be_asm(uint32_t a)
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" (a)
110  : "0" (a));
111 
112  return(a);
113 }
114 
115 static CDIO_INLINE
116 uint16_t uint16_swap_le_be_asm(uint16_t a)
117 {
118  __asm__("xchgb %b0,%h0" /* swap bytes */
119  : "=q" (a)
120  : "0" (a));
121 
122  return(a);
123 }
124 
125 #define UINT16_SWAP_LE_BE uint16_swap_le_be_asm
126 #define UINT32_SWAP_LE_BE uint32_swap_le_be_asm
127 
128 #endif
129 
130 #endif /* !defined(DISABLE_ASM_OPTIMIZE) */
131 #endif /* CDIO_BYTESEX_ASM_H_ */
132 
133 
134 /*
135  * Local variables:
136  * c-file-style: "gnu"
137  * tab-width: 8
138  * indent-tabs-mode: nil
139  * End:
140  */
Common type definitions used pervasively in libcdio.
#define CDIO_INLINE
Definition: bytesex_asm.h:41