0fde23b2c609944bc9ee10b5257a770462ae6101
[reactos.git] / reactos / drivers / bus / acpi / acpica / include / platform / acgcc.h
1 /******************************************************************************
2 *
3 * Name: acgcc.h - GCC specific defines, etc.
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2017, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44 #ifndef __ACGCC_H__
45 #define __ACGCC_H__
46
47 /*
48 * Use compiler specific <stdarg.h> is a good practice for even when
49 * -nostdinc is specified (i.e., ACPI_USE_STANDARD_HEADERS undefined.
50 */
51 #include <stdarg.h>
52
53 #define ACPI_INLINE __inline__
54
55 /* Function name is used for debug output. Non-ANSI, compiler-dependent */
56
57 #define ACPI_GET_FUNCTION_NAME __func__
58
59 /*
60 * This macro is used to tag functions as "printf-like" because
61 * some compilers (like GCC) can catch printf format string problems.
62 */
63 #define ACPI_PRINTF_LIKE(c) __attribute__ ((__format__ (__printf__, c, c+1)))
64
65 /*
66 * Some compilers complain about unused variables. Sometimes we don't want to
67 * use all the variables (for example, _AcpiModuleName). This allows us
68 * to tell the compiler warning in a per-variable manner that a variable
69 * is unused.
70 */
71 #define ACPI_UNUSED_VAR __attribute__ ((unused))
72
73 /* GCC supports __VA_ARGS__ in macros */
74
75 #define COMPILER_VA_MACRO 1
76
77
78 #ifdef __REACTOS__
79 /* Flush CPU cache - used when going to sleep. Wbinvd or similar. */
80
81 #ifdef ACPI_APPLICATION
82 #define ACPI_FLUSH_CPU_CACHE()
83 #else
84 #define ACPI_FLUSH_CPU_CACHE() asm ("WBINVD")
85 #endif
86
87 /*
88 * Global Lock acquire/release code
89 *
90 * Note: Handles case where the FACS pointer is null
91 */
92 #define ACPI_ACQUIRE_GLOBAL_LOCK(FacsPtr, Acq) \
93 do { \
94 asm("orl %2,%2;" \
95 "jz 2f;" \
96 "leal 16(%2),%2;" \
97 "1:" \
98 "movl (%2),%%eax;" \
99 "movl %%eax,%%edx;" \
100 "andl %3,%%edx;" \
101 "btsl $0x1,%%edx;" \
102 "adcl $0x0,%%edx;" \
103 "lock; cmpxchgl %%edx,(%2);" \
104 "jnz 1b;" \
105 "cmpb $0x3,%%dl;" \
106 "sbbl %%eax,%%eax;" \
107 "2:" \
108 :"=a"(Acq):"a"(0xFF),"c"(FacsPtr),"i"(~1L):"edx");\
109 } while(0)
110
111 #define ACPI_RELEASE_GLOBAL_LOCK(FacsPtr, Acq) \
112 do { \
113 asm("orl %2,%2;" \
114 "jz 2f;" \
115 "leal 16(%2),%2;" \
116 "1:" \
117 "movl (%2),%%eax;" \
118 "movl %%eax,%%edx;" \
119 "andl %3,%%edx;" \
120 "lock; cmpxchgl %%edx,(%2);" \
121 "jnz 1b;" \
122 "cmpb $0x3,%%dl;" /* FIXME: this is pointless */ \
123 "andl $0x1,%%eax;" \
124 "2:" \
125 :"=a"(Acq):"a"(0),"c"(FacsPtr),"i"(~3L):"edx");\
126 } while(0)
127
128
129 /*
130 * Note: This is also taken from our old adaptation.
131 * See acmsvc.h for where it came originally.
132 */
133 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
134 { \
135 q32 = n_hi / d32; \
136 r32 = n_lo / d32; \
137 }
138
139 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
140 { \
141 n_hi >>= 1; \
142 n_lo >>= 1; \
143 }
144
145 #endif /* __REACTOS__ */
146 #endif /* __ACGCC_H__ */