ReactOS 0.4.15-dev-8119-g4fb2fdb
acgcc.h
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1/******************************************************************************
2 *
3 * Name: acgcc.h - GCC specific defines, etc.
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2022, 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 MERCHANTABILITY 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
53typedef __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/* GCC did not support __has_attribute until 5.1. */
92
93#ifndef __has_attribute
94#define __has_attribute(x) 0
95#endif
96
97/*
98 * Explicitly mark intentional explicit fallthrough to silence
99 * -Wimplicit-fallthrough in GCC 7.1+.
100 */
101
102#if __has_attribute(__fallthrough__)
103#define ACPI_FALLTHROUGH __attribute__((__fallthrough__))
104#endif
105
106#ifdef __REACTOS__
107/* Flush CPU cache - used when going to sleep. Wbinvd or similar. */
108
109#ifdef ACPI_APPLICATION
110#define ACPI_FLUSH_CPU_CACHE()
111#else
112#define ACPI_FLUSH_CPU_CACHE() asm ("WBINVD")
113#endif
114
115/*
116 * Global Lock acquire/release code
117 *
118 * Note: Handles case where the FACS pointer is null
119 */
120#define ACPI_ACQUIRE_GLOBAL_LOCK(FacsPtr, Acq) \
121do { \
122 asm("orl %2,%2;" \
123 "jz 2f;" \
124 "leal 16(%2),%2;" \
125 "1:" \
126 "movl (%2),%%eax;" \
127 "movl %%eax,%%edx;" \
128 "andl %3,%%edx;" \
129 "btsl $0x1,%%edx;" \
130 "adcl $0x0,%%edx;" \
131 "lock; cmpxchgl %%edx,(%2);" \
132 "jnz 1b;" \
133 "cmpb $0x3,%%dl;" \
134 "sbbl %%eax,%%eax;" \
135 "2:" \
136 :"=a"(Acq):"a"(0xFF),"c"(FacsPtr),"i"(~1L):"edx");\
137} while(0)
138
139#define ACPI_RELEASE_GLOBAL_LOCK(FacsPtr, Acq) \
140do { \
141 asm("orl %2,%2;" \
142 "jz 2f;" \
143 "leal 16(%2),%2;" \
144 "1:" \
145 "movl (%2),%%eax;" \
146 "movl %%eax,%%edx;" \
147 "andl %3,%%edx;" \
148 "lock; cmpxchgl %%edx,(%2);" \
149 "jnz 1b;" \
150 "cmpb $0x3,%%dl;" /* FIXME: this is pointless */ \
151 "andl $0x1,%%eax;" \
152 "2:" \
153 :"=a"(Acq):"a"(0),"c"(FacsPtr),"i"(~3L):"edx");\
154} while(0)
155
156#endif /* __REACTOS__ */
157#endif /* __ACGCC_H__ */
char * va_list
Definition: acmsvcex.h:78