b5cc70d753
At the moment, the seL4 microkit does not setup TLS variable support. The workaround has been to `#define __thread` (blank) before including `<sel4/sel4.h>` in `<microkit.h>`, which causes issues if `<microkit.h>` is included *after* `<sel4/sel4.h>`, often with obscure linker errors to `__emutls_**` symbols. Instead we add a libsel4 config option that allows us to build it with __thread copied out. We introduce an LIBSEL4_THREAD_LOCAL macro in a similar way to the existing LIBSEL4_INLINE macro. Signed-off-by: Julia Vassiliki <julia.vassiliki@unsw.edu.au>
73 lines
2 KiB
C
73 lines
2 KiB
C
/*
|
|
* Copyright 2020, Data61, CSIRO (ABN 41 687 119 230)
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <sel4/config.h>
|
|
|
|
#ifndef CONST
|
|
#define CONST __attribute__((__const__))
|
|
#endif
|
|
|
|
#ifndef PURE
|
|
#define PURE __attribute__((__pure__))
|
|
#endif
|
|
|
|
#define SEL4_PACKED __attribute__((packed))
|
|
#define SEL4_DEPRECATED(x) __attribute__((deprecated(x)))
|
|
#define SEL4_DEPRECATE_MACRO(x) _Pragma("deprecated") x
|
|
|
|
#define LIBSEL4_UNUSED __attribute__((unused))
|
|
#define LIBSEL4_WEAK __attribute__((weak))
|
|
#define LIBSEL4_NOINLINE __attribute__((noinline))
|
|
|
|
|
|
#ifdef CONFIG_LIB_SEL4_INLINE_INVOCATIONS
|
|
|
|
#define LIBSEL4_INLINE static inline
|
|
#define LIBSEL4_INLINE_FUNC static inline
|
|
|
|
#elif defined(CONFIG_LIB_SEL4_PUBLIC_SYMBOLS)
|
|
|
|
#define LIBSEL4_INLINE LIBSEL4_UNUSED LIBSEL4_WEAK
|
|
#define LIBSEL4_INLINE_FUNC LIBSEL4_UNUSED LIBSEL4_WEAK
|
|
|
|
#else
|
|
|
|
#define LIBSEL4_INLINE LIBSEL4_NOINLINE LIBSEL4_UNUSED LIBSEL4_WEAK
|
|
#define LIBSEL4_INLINE_FUNC static inline
|
|
|
|
#endif
|
|
|
|
#if defined(CONFIG_LIB_SEL4_USE_THREAD_LOCALS)
|
|
#define LIBSEL4_THREAD_LOCAL __thread
|
|
#else
|
|
#define LIBSEL4_THREAD_LOCAL
|
|
#endif
|
|
|
|
/* _Static_assert() is a c11 feature. Since the kernel is currently compiled
|
|
* with c99, we have to emulate it. */
|
|
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
|
|
#define SEL4_COMPILE_ASSERT(name, expr) _Static_assert(expr, #name);
|
|
#else
|
|
#define SEL4_COMPILE_ASSERT(name, expr) \
|
|
typedef int __assert_failed_##name[(expr) ? 1 : -1] LIBSEL4_UNUSED;
|
|
#endif
|
|
|
|
|
|
#define SEL4_SIZE_SANITY(index, entry, size) \
|
|
SEL4_COMPILE_ASSERT(index##_##entry##_##size, (index) + (entry) == size)
|
|
|
|
|
|
/*
|
|
* Some compilers attempt to pack enums into the smallest possible type.
|
|
* For ABI compatibility with the kernel, we need to ensure they remain
|
|
* the same size as a 'long'.
|
|
*/
|
|
#define SEL4_FORCE_LONG_ENUM(type) \
|
|
_enum_pad_ ## type = ((1ULL << ((sizeof(long)*8) - 1)) - 1)
|
|
|
|
#define LIBSEL4_BIT(n) (1ul<<(n))
|