source: libcfa/src/bits/defs.hfa @ 9db2c92

arm-ehjacob/cs343-translationnew-ast-unique-expr
Last change on this file since 9db2c92 was 454f478, checked in by Thierry Delisle <tdelisle@…>, 11 months ago

Re-arranged and commented low-level headers.
Main goal was for better support of weakso locks that are comming.

  • Property mode set to 100644
File size: 2.3 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// defs.hfa -- Commen macros, functions and typedefs
8// Most files depend on them and they are always useful to have.
9//
10//  *** Must not contain code specific to libcfathread ***
11//
12// Author           : Thierry Delisle
13// Created On       : Thu Nov  9 13:24:10 2017
14// Last Modified By : Peter A. Buhr
15// Last Modified On : Sat Oct 24 10:53:15 2020
16// Update Count     : 21
17//
18
19#pragma once
20
21#include <stdint.h>
22#include <assert.h>
23
24#define likely(x)   __builtin_expect(!!(x), 1)
25#define unlikely(x) __builtin_expect(!!(x), 0)
26#define thread_local _Thread_local
27
28typedef void (*fptr_t)();
29typedef int_fast16_t __lock_size_t;
30
31#ifdef __cforall
32#define __cfa_anonymous_object(x) inline struct x
33#else
34#define __cfa_anonymous_object(x) struct x __cfa_anonymous_object
35#endif
36
37#ifdef __cforall
38void abort( const char fmt[], ... ) __attribute__ (( format(printf, 1, 2), __nothrow__, __leaf__, __noreturn__ ));
39void abort( bool signalAbort, const char fmt[], ... ) __attribute__ (( format(printf, 2, 3), __nothrow__, __leaf__, __noreturn__ ));
40extern "C" {
41#endif
42void __cabi_abort( const char fmt[], ... ) __attribute__ (( format(printf, 1, 2), __nothrow__, __leaf__, __noreturn__ ));
43#ifdef __cforall
44}
45#endif
46
47#if defined(__cforall_thread__)
48#define OPTIONAL_THREAD
49#else
50#define OPTIONAL_THREAD __attribute__((weak))
51#endif
52
53static inline long long int rdtscl(void) {
54        #if defined( __i386 ) || defined( __x86_64 )
55        unsigned int lo, hi;
56        __asm__ __volatile__ ("rdtsc" : "=a"(lo), "=d"(hi));
57        return ( (unsigned long long)lo)|( ((unsigned long long)hi)<<32 );
58        #elif defined( __aarch64__ ) || defined( __arm__ )
59        // https://github.com/google/benchmark/blob/v1.1.0/src/cycleclock.h#L116
60        long long int virtual_timer_value;
61        asm volatile("mrs %0, cntvct_el0" : "=r"(virtual_timer_value));
62        return virtual_timer_value;
63        #else
64                #error unsupported hardware architecture
65        #endif
66}
67
68// pause to prevent excess processor bus usage
69#if defined( __i386 ) || defined( __x86_64 )
70        #define Pause() __asm__ __volatile__ ( "pause" : : : )
71#elif defined( __ARM_ARCH )
72        #define Pause() __asm__ __volatile__ ( "YIELD" : : : )
73#else
74        #error unsupported architecture
75#endif
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