[ACPICA]
[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 #ifndef va_arg
52 #ifdef ACPI_USE_BUILTIN_STDARG
53 typedef __builtin_va_list va_list;
54 #define va_start(v, l) __builtin_va_start(v, l)
55 #define va_end(v) __builtin_va_end(v)
56 #define va_arg(v, l) __builtin_va_arg(v, l)
57 #define va_copy(d, s) __builtin_va_copy(d, s)
58 #else
59 #include <stdarg.h>
60 #endif
61 #endif
62
63 #define ACPI_INLINE __inline__
64
65 /* Function name is used for debug output. Non-ANSI, compiler-dependent */
66
67 #define ACPI_GET_FUNCTION_NAME __func__
68
69 /*
70 * This macro is used to tag functions as "printf-like" because
71 * some compilers (like GCC) can catch printf format string problems.
72 */
73 #define ACPI_PRINTF_LIKE(c) __attribute__ ((__format__ (__printf__, c, c+1)))
74
75 /*
76 * Some compilers complain about unused variables. Sometimes we don't want to
77 * use all the variables (for example, _AcpiModuleName). This allows us
78 * to tell the compiler warning in a per-variable manner that a variable
79 * is unused.
80 */
81 #define ACPI_UNUSED_VAR __attribute__ ((unused))
82
83 /* GCC supports __VA_ARGS__ in macros */
84
85 #define COMPILER_VA_MACRO 1
86
87 /* GCC supports native multiply/shift on 32-bit platforms */
88
89 #define ACPI_USE_NATIVE_MATH64
90
91 #ifdef __REACTOS__
92 /* Flush CPU cache - used when going to sleep. Wbinvd or similar. */
93
94 #ifdef ACPI_APPLICATION
95 #define ACPI_FLUSH_CPU_CACHE()
96 #else
97 #define ACPI_FLUSH_CPU_CACHE() asm ("WBINVD")
98 #endif
99
100 /*
101 * Global Lock acquire/release code
102 *
103 * Note: Handles case where the FACS pointer is null
104 */
105 #define ACPI_ACQUIRE_GLOBAL_LOCK(FacsPtr, Acq) \
106 do { \
107 asm("orl %2,%2;" \
108 "jz 2f;" \
109 "leal 16(%2),%2;" \
110 "1:" \
111 "movl (%2),%%eax;" \
112 "movl %%eax,%%edx;" \
113 "andl %3,%%edx;" \
114 "btsl $0x1,%%edx;" \
115 "adcl $0x0,%%edx;" \
116 "lock; cmpxchgl %%edx,(%2);" \
117 "jnz 1b;" \
118 "cmpb $0x3,%%dl;" \
119 "sbbl %%eax,%%eax;" \
120 "2:" \
121 :"=a"(Acq):"a"(0xFF),"c"(FacsPtr),"i"(~1L):"edx");\
122 } while(0)
123
124 #define ACPI_RELEASE_GLOBAL_LOCK(FacsPtr, Acq) \
125 do { \
126 asm("orl %2,%2;" \
127 "jz 2f;" \
128 "leal 16(%2),%2;" \
129 "1:" \
130 "movl (%2),%%eax;" \
131 "movl %%eax,%%edx;" \
132 "andl %3,%%edx;" \
133 "lock; cmpxchgl %%edx,(%2);" \
134 "jnz 1b;" \
135 "cmpb $0x3,%%dl;" /* FIXME: this is pointless */ \
136 "andl $0x1,%%eax;" \
137 "2:" \
138 :"=a"(Acq):"a"(0),"c"(FacsPtr),"i"(~3L):"edx");\
139 } while(0)
140
141 #endif /* __REACTOS__ */
142 #endif /* __ACGCC_H__ */