152 lines
5.7 KiB
C
152 lines
5.7 KiB
C
/*
|
|
* Copyright (c) 2011, 2012, 2013, 2015, 2022 Jonas 'Sortie' Termansen.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* sys/cdefs.h
|
|
* Declares internal macros for the C programming language.
|
|
*/
|
|
|
|
#ifndef _INCLUDE_SYS_CDEFS_H
|
|
#define _INCLUDE_SYS_CDEFS_H
|
|
|
|
#include <features.h>
|
|
|
|
/* Preprocessor trick to turn anything into a string. */
|
|
#define __STRINGIFY(x) #x
|
|
|
|
/* Issue warning when this is used, except in defines, where the warning is
|
|
inserted whenever the macro is expanded. This can be used to deprecated
|
|
macros - and it happens on preprocessor level - so it shouldn't change any
|
|
semantics of any code that uses such a macro. The argument msg should be a
|
|
string that contains the warning. */
|
|
#define __PRAGMA_WARNING(msg) _Pragma(__STRINGIFY(GCC warning msg))
|
|
|
|
/* Use the real restrict keyword if it is available. Not that this really
|
|
matters as gcc uses __restrict and __restrict__ as aliases for restrict, but
|
|
it will look nicer after preprocessing. */
|
|
#if __HAS_RESTRICT
|
|
#undef __restrict
|
|
#define __restrict restrict
|
|
#endif
|
|
|
|
/* Provide the restrict keyword if requested and unavailable. */
|
|
#if !__HAS_RESTRICT && __want_restrict
|
|
#define restrict __restrict
|
|
#undef __HAS_RESTRICT
|
|
#define __HAS_RESTRICT 2
|
|
#endif
|
|
|
|
/* Macro to declare a weak alias. */
|
|
#if defined(__is_sortix_libc)
|
|
#define weak_alias(old, new) \
|
|
extern __typeof(old) new __attribute__((weak, alias(#old)))
|
|
#endif
|
|
|
|
#define __pure2 __attribute__((__const__))
|
|
|
|
/*
|
|
* Compatibility macros to advertise to ports when features become available.
|
|
* These macros are only for things that are not trivial to detect from a C
|
|
* source file (such as by a standard macro).
|
|
*
|
|
* The feature foo should initially have an undef preprocessor statement of the
|
|
* macro __SORTIX_HAS_FOO__ (or something like that). It should carry a TODO
|
|
* comment stating:
|
|
*
|
|
* - What the feature is and when the macro should become defined.
|
|
* - Which ports (if any) rely on this macro and will use the feature whenever
|
|
* the macro is defined.
|
|
* - That the macro should be removed when the specific ports have been updated
|
|
* to no longer rely on the macro. If no ports used the feature in the first
|
|
* place, it should say to remove the macro when the feature is implemented.
|
|
*
|
|
* The undef statement should become a define statement when the feature is
|
|
* implemented. As the each port is updated after that, the feature should
|
|
* become unconditionally used in the port, and the port is removed from the
|
|
* list here. Finally, when the list is empty, the macro is removed entirely.
|
|
*
|
|
* For instance, the TODO statement for the feature foo with the undef'd macro
|
|
* __SORTIX_HAS_FOO__ might say:
|
|
*
|
|
* "Define when foo is implemented. Remove when libbar, libqux, and libbaz are
|
|
* updated to not rely on this macro."
|
|
*
|
|
* Should a port become broken if a macro is defined here, the port should be
|
|
* fixed (by either fixing it or disabling the feature in the port regardless
|
|
* of the macro) before the macro is officially enabled here.
|
|
*/
|
|
|
|
/* TODO: Define when floating point formating is implemented. Remove when gawk
|
|
is updated to not rely on this macro. */
|
|
#undef __SORTIX_HAS_FORMAT_FLOAT__
|
|
|
|
/* TODO: Define when floating point parsing is implemented. No ports are using
|
|
this macro at this time. Remove when the feature is implemented. */
|
|
#undef __SORTIX_HAS_FLOAT_PARSE__
|
|
|
|
/* TODO: Define when restartable system calls are implemented. Remove when git
|
|
is updated to not rely on this macro. */
|
|
#undef __SORTIX_HAS_RESTARTABLE_SYSCALLS__
|
|
|
|
/* TODO: Define when general user security is implemented. Remove when ssh is
|
|
updated to not rely on this macro. */
|
|
#undef __SORTIX_HAS_UID_SECURITY__
|
|
|
|
/* TODO: Define when mmap MAP_SHARED works properly. Remove when ssh is updated
|
|
to not rely on this macro. */
|
|
#undef __SORTIX_HAS_WORKING_MAP_SHARED__
|
|
|
|
/* TODO: Define when shared memory, file descriptor passing, and general user
|
|
security are implemented. Remove when ssh is updated to not rely on
|
|
this macro. */
|
|
#undef __SORTIX_HAS_WORKING_PRIVSEP__
|
|
|
|
/* TODO: Define when initgroups(2) is implemented. Remove when libdbus and ssh
|
|
are updated not rely on this macro. */
|
|
#undef __SORTIX_HAS_INITGROUPS__
|
|
|
|
/* TODO: Define when setgroups(2) is implemented. Remove when libdbus and ssh
|
|
are updated not rely on this macro. */
|
|
#undef __SORTIX_HAS_SETGROUPS__
|
|
|
|
/* TODO: Define when getgroups(2) is implemented. Remove when ssh is updated to
|
|
not rely on this macro. */
|
|
#undef __SORTIX_HAS_GETGROUPS__
|
|
|
|
/* TODO: Define when getservbyname(3) is implemented and works. Remove when ssh
|
|
is updated to not rely on this macro. */
|
|
#undef __SORTIX_HAS_GETSERVBYNAME__
|
|
|
|
#if (defined(__is_sortix_libk) || defined(__is_sortix_kernel)) && \
|
|
defined(__TRACE_KMALLOC)
|
|
#undef __TRACE_ALLOCATION_SITES
|
|
#define __TRACE_ALLOCATION_SITES
|
|
#endif
|
|
|
|
#ifdef __TRACE_ALLOCATION_SITES
|
|
#include <stddef.h>
|
|
struct __allocation_site
|
|
{
|
|
const char* file;
|
|
size_t line;
|
|
const char* function;
|
|
size_t current_size;
|
|
size_t allocations;
|
|
};
|
|
#define __TRACE_ALLOCATION_SITES
|
|
#define ALLOCATION_SITE 0
|
|
#endif
|
|
|
|
#endif
|