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[inc][compiler] update compiler.h with new bits from zircon

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Mostly macros dealing with clang, which do not yet work, but lets
some other zircon code be compiled cleanly.
This commit is contained in:
Travis Geiselbrecht
2021-04-02 19:23:35 -07:00
parent c5ef3165e4
commit 890504c922
1 changed files with 52 additions and 9 deletions
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61
top/include/lk/compiler.h
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@@ -1,18 +1,23 @@
/*
* Copyright (c) 2008-2013 Travis Geiselbrecht
*
* Use of this source code is governed by a MIT-style
* license that can be found in the LICENSE file or at
* https://opensource.org/licenses/MIT
*/
//
// Copyright (c) 2008-2013 Travis Geiselbrecht
//
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT
//
// Copyright 2016 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#pragma once
#ifndef __ASSEMBLY__
#if __GNUC__
#if __GNUC__ || __clang__
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#define __UNUSED __attribute__((__unused__))
#define __USED __attribute__((__used__))
#define __PACKED __attribute__((packed))
#define __ALIGNED(x) __attribute__((aligned(x)))
#define __PRINTFLIKE(__fmt,__varargs) __attribute__((__format__ (__printf__, __fmt, __varargs)))
@@ -32,7 +37,7 @@
#define __SRAM __NO_INLINE __SECTION(".sram.text")
#define __CONSTRUCTOR __attribute__((constructor))
#define __DESTRUCTOR __attribute__((destructor))
#define __OPTIMIZE(x) __attribute__((optimize(x)))
#define __RESTRICT __restrict
#define INCBIN(symname, sizename, filename, section) \
__asm__ (".section " section "; .align 4; .globl "#symname); \
@@ -117,6 +122,42 @@
#define __offsetof(type, field) __builtin_offsetof(type, field)
#if defined(__cplusplus) && __cplusplus >= 201703L
#define __FALLTHROUGH [[fallthrough]]
#elif defined(__cplusplus) && defined(__clang__)
#define __FALLTHROUGH [[clang::fallthrough]]
#elif __GNUC__ >= 7
#define __FALLTHROUGH __attribute__((__fallthrough__))
#else
#define __FALLTHROUGH do {} while (0)
#endif
#ifndef __clang__
#define __LEAF_FN __attribute__((__leaf__))
#define __OPTIMIZE(x) __attribute__((optimize(x)))
#define __THREAD_ANNOTATION(x)
#define __has_feature(x) 0
#else
#define __LEAF_FN
#define __OPTIMIZE(x)
#define __THREAD_ANNOTATION(x) __attribute__((x))
#endif
// Publicly exposed thread annotation macros. These have a long and ugly name to
// minimize the chance of collision with consumers of Zircon's public headers.
#define __TA_CAPABILITY(x) __THREAD_ANNOTATION(__capability__(x))
#define __TA_GUARDED(x) __THREAD_ANNOTATION(__guarded_by__(x))
#define __TA_ACQUIRE(...) __THREAD_ANNOTATION(__acquire_capability__(__VA_ARGS__))
#define __TA_TRY_ACQUIRE(...) __THREAD_ANNOTATION(__try_acquire_capability__(__VA_ARGS__))
#define __TA_ACQUIRED_BEFORE(...) __THREAD_ANNOTATION(__acquired_before__(__VA_ARGS__))
#define __TA_ACQUIRED_AFTER(...) __THREAD_ANNOTATION(__acquired_after__(__VA_ARGS__))
#define __TA_RELEASE(...) __THREAD_ANNOTATION(__release_capability__(__VA_ARGS__))
#define __TA_REQUIRES(...) __THREAD_ANNOTATION(__requires_capability__(__VA_ARGS__))
#define __TA_EXCLUDES(...) __THREAD_ANNOTATION(__locks_excluded__(__VA_ARGS__))
#define __TA_RETURN_CAPABILITY(x) __THREAD_ANNOTATION(__lock_returned__(x))
#define __TA_SCOPED_CAPABILITY __THREAD_ANNOTATION(__scoped_lockable__)
#define __TA_NO_THREAD_SAFETY_ANALYSIS __THREAD_ANNOTATION(__no_thread_safety_analysis__)
#else
#define likely(x) (x)
@@ -140,7 +181,9 @@
#endif
/* TODO: add type check */
#if !defined(countof)
#define countof(a) (sizeof(a) / sizeof((a)[0]))
#endif
/* CPP header guards */
#ifdef __cplusplus