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ddf70fa199
* Cleanup tgmath wrappers. - Remove special-case gyb logic for lgamma on Darwin; the symbols we need are always present, even if not visible in the headers, so we only need a prototype. - Add some deprecations for symbols that have direct stdlib analogues. - Make some operations generic on [Binary]FloatingPoint, where they can map to the protocols instead of calling libm. - Mark ldexp(Float/Double) renamed to scalbn; for binary formats these are identical functions, and we don't really want to use these names for hypothetical future Decimal support, as they're not Swifty.
232 lines
7.0 KiB
C++
232 lines
7.0 KiB
C++
//===--- LibcShims.h - Access to POSIX for Swift's core stdlib --*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// Using the Darwin (or Glibc) module in the core stdlib would create a
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// circular dependency, so instead we import these declarations as part of
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// SwiftShims.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_STDLIB_SHIMS_LIBCSHIMS_H
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#define SWIFT_STDLIB_SHIMS_LIBCSHIMS_H
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#include "SwiftStdint.h"
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#include "SwiftStddef.h"
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#include "Visibility.h"
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#if __has_feature(nullability)
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#pragma clang assume_nonnull begin
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#endif
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#ifdef __cplusplus
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namespace swift { extern "C" {
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#endif
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// This declaration is not universally correct. We verify its correctness for
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// the current platform in the runtime code.
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#if defined(__linux__) && defined (__arm__)
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typedef int __swift_ssize_t;
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#elif defined(_WIN32)
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#if defined(_M_ARM) || defined(_M_IX86)
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typedef int __swift_ssize_t;
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#elif defined(_M_X64) || defined(_M_ARM64)
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typedef long long int __swift_ssize_t;
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#else
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#error unsupported machine type
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#endif
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#else
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typedef long int __swift_ssize_t;
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#endif
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// This declaration might not be universally correct.
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// We verify its correctness for the current platform in the runtime code.
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#if defined(__linux__)
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# if defined(__ANDROID__)
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typedef __swift_uint16_t __swift_mode_t;
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# else
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typedef __swift_uint32_t __swift_mode_t;
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# endif
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#elif defined(__APPLE__)
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typedef __swift_uint16_t __swift_mode_t;
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#elif defined(_WIN32)
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typedef __swift_int32_t __swift_mode_t;
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#else // just guessing
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typedef __swift_uint16_t __swift_mode_t;
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#endif
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// General utilities <stdlib.h>
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// Memory management functions
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SWIFT_RUNTIME_STDLIB_INTERNAL
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void _stdlib_free(void *ptr);
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// Input/output <stdio.h>
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SWIFT_RUNTIME_STDLIB_INTERNAL
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int _stdlib_putchar_unlocked(int c);
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SWIFT_RUNTIME_STDLIB_INTERNAL
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__swift_size_t _stdlib_fwrite_stdout(const void *ptr, __swift_size_t size,
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__swift_size_t nitems);
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// String handling <string.h>
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SWIFT_READONLY SWIFT_RUNTIME_STDLIB_INTERNAL
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__swift_size_t _stdlib_strlen(const char *s);
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SWIFT_READONLY SWIFT_RUNTIME_STDLIB_INTERNAL
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__swift_size_t _stdlib_strlen_unsigned(const unsigned char *s);
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SWIFT_READONLY
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SWIFT_RUNTIME_STDLIB_INTERNAL
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int _stdlib_memcmp(const void *s1, const void *s2, __swift_size_t n);
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// <unistd.h>
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SWIFT_RUNTIME_STDLIB_INTERNAL
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__swift_ssize_t _stdlib_read(int fd, void *buf, __swift_size_t nbyte);
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SWIFT_RUNTIME_STDLIB_INTERNAL
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__swift_ssize_t _stdlib_write(int fd, const void *buf, __swift_size_t nbyte);
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SWIFT_RUNTIME_STDLIB_INTERNAL
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int _stdlib_close(int fd);
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// Semaphores <semaphore.h>
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#if !defined(_WIN32) || defined(__CYGWIN__)
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// We can't use sem_t itself here, nor is there a platform-consistent
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// definition to copy for a __swift_sem_t type. Instead we use
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// void* in place of sem_t* and cast it back on the Swift side.
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SWIFT_RUNTIME_STDLIB_INTERNAL
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void *_stdlib_sem_open2(const char *name, int oflag);
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SWIFT_RUNTIME_STDLIB_INTERNAL
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void *_stdlib_sem_open4(const char *name, int oflag,
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__swift_mode_t mode, unsigned int value);
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#endif
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// File control <fcntl.h>
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SWIFT_RUNTIME_STDLIB_INTERNAL
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int _stdlib_open(const char *path, int oflag, __swift_mode_t mode);
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#if !defined(_WIN32) || defined(__CYGWIN__)
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SWIFT_RUNTIME_STDLIB_INTERNAL
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int _stdlib_openat(int fd, const char *path, int oflag, __swift_mode_t mode);
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SWIFT_RUNTIME_STDLIB_INTERNAL
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int _stdlib_fcntl(int fd, int cmd, int value);
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SWIFT_RUNTIME_STDLIB_INTERNAL
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int _stdlib_fcntlPtr(int fd, int cmd, void* ptr);
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#endif
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// I/O control <ioctl.h>
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#if !defined(_WIN32) || defined(__CYGWIN__)
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SWIFT_RUNTIME_STDLIB_INTERNAL
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int _stdlib_ioctl(int fd, unsigned long int request, int value);
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SWIFT_RUNTIME_STDLIB_INTERNAL
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int _stdlib_ioctlPtr(int fd, unsigned long int request, void* ptr);
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#endif
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// Environment
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#if defined(__APPLE__) || defined(__FreeBSD__)
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SWIFT_RUNTIME_STDLIB_INTERNAL
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char * _Nullable *_stdlib_getEnviron();
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#endif
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// System error numbers <errno.h>
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SWIFT_RUNTIME_STDLIB_INTERNAL
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int _stdlib_getErrno();
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SWIFT_RUNTIME_STDLIB_INTERNAL
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void _stdlib_setErrno(int value);
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// Non-standard extensions
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SWIFT_READNONE SWIFT_RUNTIME_STDLIB_INTERNAL
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__swift_size_t _stdlib_malloc_size(const void *ptr);
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// Random number <random>
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SWIFT_RUNTIME_STDLIB_INTERNAL
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__swift_uint32_t _stdlib_cxx11_mt19937(void);
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SWIFT_RUNTIME_STDLIB_INTERNAL
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__swift_uint32_t _stdlib_cxx11_mt19937_uniform(__swift_uint32_t upper_bound);
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// Math library functions
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static inline SWIFT_ALWAYS_INLINE
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float _stdlib_remainderf(float _self, float _other) {
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return __builtin_remainderf(_self, _other);
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}
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static inline SWIFT_ALWAYS_INLINE
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float _stdlib_squareRootf(float _self) {
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return __builtin_sqrtf(_self);
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}
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static inline SWIFT_ALWAYS_INLINE
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double _stdlib_remainder(double _self, double _other) {
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return __builtin_remainder(_self, _other);
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}
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static inline SWIFT_ALWAYS_INLINE
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double _stdlib_squareRoot(double _self) {
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return __builtin_sqrt(_self);
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}
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#if !defined _WIN32 && (defined __i386__ || defined __x86_64__)
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static inline SWIFT_ALWAYS_INLINE
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long double _stdlib_remainderl(long double _self, long double _other) {
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return __builtin_remainderl(_self, _other);
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}
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static inline SWIFT_ALWAYS_INLINE
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long double _stdlib_squareRootl(long double _self) {
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return __builtin_sqrtl(_self);
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}
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#endif
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// Apple's math.h does not declare lgamma_r() etc by default, but they're
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// unconditionally exported by libsystem_m.dylib in all OS versions that
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// support Swift development; we simply need to provide declarations here.
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#if defined(__APPLE__)
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float lgammaf_r(float x, int *psigngam);
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double lgamma_r(double x, int *psigngam);
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long double lgammal_r(long double x, int *psigngam);
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#endif // defined(__APPLE__)
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// TLS - thread local storage
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#if defined(__linux__)
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# if defined(__ANDROID__)
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typedef int __swift_thread_key_t;
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# else
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typedef unsigned int __swift_thread_key_t;
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# endif
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#elif defined(__FreeBSD__)
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typedef int __swift_thread_key_t;
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#elif defined(_WIN32)
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typedef unsigned long __swift_thread_key_t;
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#elif defined(__HAIKU__)
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typedef int __swift_thread_key_t;
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#else
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typedef unsigned long __swift_thread_key_t;
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#endif
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SWIFT_RUNTIME_STDLIB_INTERNAL
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int _stdlib_thread_key_create(__swift_thread_key_t * _Nonnull key,
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void (* _Nullable destructor)(void * _Nullable));
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SWIFT_RUNTIME_STDLIB_INTERNAL
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void * _Nullable _stdlib_thread_getspecific(__swift_thread_key_t key);
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SWIFT_RUNTIME_STDLIB_INTERNAL
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int _stdlib_thread_setspecific(__swift_thread_key_t key,
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const void * _Nullable value);
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#ifdef __cplusplus
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}} // extern "C", namespace swift
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#endif
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#if __has_feature(nullability)
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#pragma clang assume_nonnull end
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#endif
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#endif // SWIFT_STDLIB_SHIMS_LIBCSHIMS_H
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