compiler.hh (9419:54d5c0e5852a) compiler.hh (9420:965d857ac791)
1/*
2 * Copyright (c) 2012 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software

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38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * Authors: Ali Saidi
41 */
42
43#ifndef __BASE_COMPILER_HH__
44#define __BASE_COMPILER_HH__
45
1/*
2 * Copyright (c) 2012 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software

--- 29 unchanged lines hidden (view full) ---

38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * Authors: Ali Saidi
41 */
42
43#ifndef __BASE_COMPILER_HH__
44#define __BASE_COMPILER_HH__
45
46#include "config/have_static_assert.hh"
47
48// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html
49
50#if defined(__GNUC__)
51#define M5_ATTR_NORETURN __attribute__((noreturn))
52#define M5_PRAGMA_NORETURN(x)
53#define M5_DUMMY_RETURN
54#define M5_VAR_USED __attribute__((unused))
55#define M5_ATTR_PACKED __attribute__ ((__packed__))
56#define M5_NO_INLINE __attribute__ ((__noinline__))
57#else
58#error "Need to define compiler options in base/compiler.hh"
59#endif
60
46// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html
47
48#if defined(__GNUC__)
49#define M5_ATTR_NORETURN __attribute__((noreturn))
50#define M5_PRAGMA_NORETURN(x)
51#define M5_DUMMY_RETURN
52#define M5_VAR_USED __attribute__((unused))
53#define M5_ATTR_PACKED __attribute__ ((__packed__))
54#define M5_NO_INLINE __attribute__ ((__noinline__))
55#else
56#error "Need to define compiler options in base/compiler.hh"
57#endif
58
61/*
62 * Define a compatibility macro that emulates the behavior of
63 * static_assert using template magic if the compiler doesn't have
64 * native support.
65 */
66#if !HAVE_STATIC_ASSERT
67
68template<bool>
69struct static_assert_failure;
70
71template<>
72struct static_assert_failure<false> {};
73
74/* The following macro causes the compiler to evaluate the size of the
75 * static_assert_failure struct. The templates are designed so that
76 * only static_assert_failure<false> evaluates to a proper size, while
77 * static_assert_failure<true> generates a compile time error.
78 */
79#define static_assert(expr, msg) \
80 namespace ns_static_assert { \
81 enum { \
82 static_assert_ ## __LINE__ = \
83 sizeof(static_assert_failure<!(expr)>) \
84 }; \
85 }
86
87#endif
88
89#endif // __BASE_COMPILER_HH__
59#endif // __BASE_COMPILER_HH__