xref: /openbmc/linux/include/acpi/platform/acgcc.h (revision 4da722ca)
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, _acpi_module_name). 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 #endif				/* __ACGCC_H__ */
88