mirror of
https://github.com/yuzu-emu/unicorn.git
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c6509498da
In commit a1a98357e3fd in 2018 we added some workarounds for Coverity not being able to handle the _Float* types introduced by recent glibc. Newer versions of the Coverity scan tools have support for these types, and will fail with errors about duplicate typedefs if we have our workaround. Remove our copy of the typedefs. Backports commit c160f17cd6f5fc3f8698b408a451149b34b1a647 from qemu
297 lines
8.2 KiB
C
297 lines
8.2 KiB
C
/*
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* OS includes and handling of OS dependencies
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*
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* This header exists to pull in some common system headers that
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* most code in QEMU will want, and to fix up some possible issues with
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* it (missing defines, Windows weirdness, and so on).
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*
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* To avoid getting into possible circular include dependencies, this
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* file should not include any other QEMU headers, with the exceptions
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* of config-host.h, config-target.h, qemu/compiler.h,
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* sysemu/os-posix.h, sysemu/os-win32.h, glib-compat.h and
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* qemu/typedefs.h, all of which are doing a similar job to this file
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* and are under similar constraints.
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*
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* This header also contains prototypes for functions defined in
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* os-*.c and util/oslib-*.c; those would probably be better split
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* out into separate header files.
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*
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* In an ideal world this header would contain only:
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* (1) things which everybody needs
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* (2) things without which code would work on most platforms but
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* fail to compile or misbehave on a minority of host OSes
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef QEMU_OSDEP_H
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#define QEMU_OSDEP_H
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#include "config-host.h"
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#ifdef NEED_CPU_H
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#include "config-target.h"
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#endif
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#include "qemu/compiler.h"
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/* Older versions of C++ don't get definitions of various macros from
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* stdlib.h unless we define these macros before first inclusion of
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* that system header.
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*/
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#ifndef __STDC_CONSTANT_MACROS
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#define __STDC_CONSTANT_MACROS
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#endif
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#ifndef __STDC_LIMIT_MACROS
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#define __STDC_LIMIT_MACROS
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#endif
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#ifndef __STDC_FORMAT_MACROS
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#define __STDC_FORMAT_MACROS
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#endif
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#ifdef _WIN32
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/* as defined in sdkddkver.h */
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#ifndef _WIN32_WINNT
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#define _WIN32_WINNT 0x0600 /* Vista */
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#endif
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/* reduces the number of implicitly included headers */
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#endif
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#endif
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/* enable C99/POSIX format strings (needs mingw32-runtime 3.15 or later) */
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#ifdef __MINGW32__
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#define __USE_MINGW_ANSI_STDIO 1
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#endif
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#include <stdarg.h>
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#include <stddef.h>
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#include "unicorn/platform.h"
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#include <sys/types.h>
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#include <stdlib.h>
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#include <stdio.h>
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#ifndef _MSC_VER
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#include <strings.h>
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#include <unistd.h>
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#include <sys/time.h>
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#endif
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#include <string.h>
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#include <inttypes.h>
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#include <limits.h>
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#include <time.h>
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <assert.h>
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/* setjmp must be declared before sysemu/os-win32.h
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* because it is redefined there. */
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#include <setjmp.h>
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#include <signal.h>
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#ifdef __OpenBSD__
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#include <sys/signal.h>
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#endif
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#ifndef _WIN32
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#include <sys/wait.h>
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#else
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#define WIFEXITED(x) 1
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#define WEXITSTATUS(x) (x)
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#endif
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#ifdef _WIN32
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#include "sysemu/os-win32.h"
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#endif
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#include "glib_compat.h"
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#include "qemu/typedefs.h"
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/*
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* We have a lot of unaudited code that may fail in strange ways, or
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* even be a security risk during migration, if you disable assertions
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* at compile-time. You may comment out these safety checks if you
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* absolutely want to disable assertion overhead, but it is not
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* supported upstream so the risk is all yours. Meanwhile, please
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* submit patches to remove any side-effects inside an assertion, or
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* fixing error handling that should use Error instead of assert.
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*/
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#ifdef NDEBUG
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#error building with NDEBUG is not supported
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#endif
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#ifdef G_DISABLE_ASSERT
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#error building with G_DISABLE_ASSERT is not supported
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#endif
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#ifndef O_LARGEFILE
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#define O_LARGEFILE 0
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#endif
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#ifndef O_BINARY
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#define O_BINARY 0
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#endif
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#ifndef MAP_ANONYMOUS
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#define MAP_ANONYMOUS MAP_ANON
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#endif
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#ifndef ENOMEDIUM
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#define ENOMEDIUM ENODEV
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#endif
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#if !defined(ENOTSUP)
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#define ENOTSUP 4096
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#endif
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#if !defined(ECANCELED)
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#define ECANCELED 4097
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#endif
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#if !defined(EMEDIUMTYPE)
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#define EMEDIUMTYPE 4098
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#endif
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/* time_t may be either 32 or 64 bits depending on the host OS, and
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* can be either signed or unsigned, so we can't just hardcode a
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* specific maximum value. This is not a C preprocessor constant,
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* so you can't use TIME_MAX in an #ifdef, but for our purposes
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* this isn't a problem.
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*/
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/* The macros TYPE_SIGNED, TYPE_WIDTH, and TYPE_MAXIMUM are from
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* Gnulib, and are under the LGPL v2.1 or (at your option) any
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* later version.
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*/
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/* True if the real type T is signed. */
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#define TYPE_SIGNED(t) (!((t)0 < (t)-1))
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/* The width in bits of the integer type or expression T.
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* Padding bits are not supported.
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*/
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#define TYPE_WIDTH(t) (sizeof(t) * CHAR_BIT)
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/* The maximum and minimum values for the integer type T. */
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#define TYPE_MAXIMUM(t) \
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((t) (!TYPE_SIGNED(t) \
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? (t)-1 \
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: ((((t)1 << (TYPE_WIDTH(t) - 2)) - 1) * 2 + 1)))
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#ifndef TIME_MAX
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#define TIME_MAX TYPE_MAXIMUM(time_t)
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#endif
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/* HOST_LONG_BITS is the size of a native pointer in bits. */
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#if UINTPTR_MAX == UINT32_MAX
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# define HOST_LONG_BITS 32
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#elif UINTPTR_MAX == UINT64_MAX
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# define HOST_LONG_BITS 64
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#else
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# error Unknown pointer size
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#endif
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#ifndef MIN
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#define MIN(a, b) (((a) < (b)) ? (a) : (b))
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#endif
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#ifndef MAX
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#define MAX(a, b) (((a) > (b)) ? (a) : (b))
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#endif
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/* Minimum function that returns zero only iff both values are zero.
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* Intended for use with unsigned values only. */
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#ifndef MIN_NON_ZERO
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#define MIN_NON_ZERO(a, b) ((a) == 0 ? (b) : \
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((b) == 0 ? (a) : (MIN(a, b))))
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#endif
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/* Round number down to multiple */
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#define QEMU_ALIGN_DOWN(n, m) ((n) / (m) * (m))
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/* Round number up to multiple. Safe when m is not a power of 2 (see
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* ROUND_UP for a faster version when a power of 2 is guaranteed) */
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#define QEMU_ALIGN_UP(n, m) QEMU_ALIGN_DOWN((n) + (m) - 1, (m))
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/* Check if n is a multiple of m */
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#define QEMU_IS_ALIGNED(n, m) (((n) % (m)) == 0)
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/* Unfortunately MSVC compatibility means explicit casting */
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#ifdef _MSC_VER
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/* n-byte align pointer down */
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#define QEMU_ALIGN_PTR_DOWN(p, n) \
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(QEMU_ALIGN_DOWN((uintptr_t)(p), (n)))
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/* n-byte align pointer up */
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#define QEMU_ALIGN_PTR_UP(p, n) \
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(QEMU_ALIGN_UP((uintptr_t)(p), (n)))
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/* Check if pointer p is n-bytes aligned */
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#define QEMU_PTR_IS_ALIGNED(p, n) QEMU_IS_ALIGNED((uintptr_t)(p), (n))
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#else
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/* n-byte align pointer down */
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#define QEMU_ALIGN_PTR_DOWN(p, n) \
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((typeof(p))QEMU_ALIGN_DOWN((uintptr_t)(p), (n)))
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/* n-byte align pointer up */
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#define QEMU_ALIGN_PTR_UP(p, n) \
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((typeof(p))QEMU_ALIGN_UP((uintptr_t)(p), (n)))
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/* Check if pointer p is n-bytes aligned */
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#define QEMU_PTR_IS_ALIGNED(p, n) QEMU_IS_ALIGNED((uintptr_t)(p), (n))
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#endif
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/* Round number up to multiple. Requires that d be a power of 2 (see
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* QEMU_ALIGN_UP for a safer but slower version on arbitrary
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* numbers); works even if d is a smaller type than n. */
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#ifndef ROUND_UP
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#define ROUND_UP(n, d) (((n) + (d) - 1) & -(0 ? (n) : (d)))
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#endif
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#ifndef DIV_ROUND_UP
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#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
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#endif
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#ifdef _MSC_VER
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#define QEMU_IS_ARRAY(x) (x)
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#else
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/*
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* &(x)[0] is always a pointer - if it's same type as x then the argument is a
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* pointer, not an array.
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*/
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#define QEMU_IS_ARRAY(x) (!__builtin_types_compatible_p(typeof(x), \
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typeof(&(x)[0])))
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#endif
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#ifndef ARRAY_SIZE
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#define ARRAY_SIZE(x) ((sizeof(x) / sizeof((x)[0])) + \
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QEMU_BUILD_BUG_ON_ZERO(!QEMU_IS_ARRAY(x)))
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#endif
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void *qemu_try_memalign(size_t alignment, size_t size);
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void *qemu_memalign(size_t alignment, size_t size);
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void *qemu_anon_ram_alloc(size_t size, uint64_t *align);
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void qemu_vfree(void *ptr);
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void qemu_anon_ram_free(void *ptr, size_t size);
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#if defined(__HAIKU__) && defined(__i386__)
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#define FMT_pid "%ld"
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#elif defined(WIN64)
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#define FMT_pid "%" PRId64
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#else
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#define FMT_pid "%d"
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#endif
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/**
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* qemu_getauxval:
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* @type: the auxiliary vector key to lookup
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*
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* Search the auxiliary vector for @type, returning the value
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* or 0 if @type is not present.
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*/
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unsigned long qemu_getauxval(unsigned long type);
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/* Starting on QEMU 2.5, qemu_hw_version() returns "2.5+" by default
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* instead of QEMU_VERSION, so setting hw_version on MachineClass
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* is no longer mandatory.
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*
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* Do NOT change this string, or it will break compatibility on all
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* machine classes that don't set hw_version.
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*/
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#define QEMU_HW_VERSION "2.5+"
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#endif
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