Archipelago » qemu

#ifndef QEMU_OSDEP_H

#define QEMU_OSDEP_H

#include "config-host.h"

#include <stdarg.h>

#include <stddef.h>

#include <stdbool.h>

#include <sys/types.h>

#ifdef __OpenBSD__

#include <sys/signal.h>

#endif

#ifndef _WIN32

#include <sys/wait.h>

#else

#define WIFEXITED(x)   1

#define WEXITSTATUS(x) (x)

#endif

#include <sys/time.h>

#if defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10

/* [u]int_fast*_t not in <sys/int_types.h> */

typedef unsigned char           uint_fast8_t;

typedef unsigned int            uint_fast16_t;

typedef signed int              int_fast16_t;

#endif

#ifndef glue

#define xglue(x, y) x ## y

#define glue(x, y) xglue(x, y)

#define stringify(s)        tostring(s)

#define tostring(s)        #s

#endif

#ifndef likely

#if __GNUC__ < 3

#define __builtin_expect(x, n) (x)

#endif

#define likely(x)   __builtin_expect(!!(x), 1)

#define unlikely(x)   __builtin_expect(!!(x), 0)

#endif

#ifndef container_of

#define container_of(ptr, type, member) ({                      \

        const typeof(((type *) 0)->member) *__mptr = (ptr);     \

        (type *) ((char *) __mptr - offsetof(type, member));})

#endif

/* Convert from a base type to a parent type, with compile time checking.  */

#ifdef __GNUC__

#define DO_UPCAST(type, field, dev) ( __extension__ ( { \

    char __attribute__((unused)) offset_must_be_zero[ \

        -offsetof(type, field)]; \

    container_of(dev, type, field);}))

#else

#define DO_UPCAST(type, field, dev) container_of(dev, type, field)

#endif

#define typeof_field(type, field) typeof(((type *)0)->field)

#define type_check(t1,t2) ((t1*)0 - (t2*)0)

#ifndef MIN

#define MIN(a, b) (((a) < (b)) ? (a) : (b))

#endif

#ifndef MAX

#define MAX(a, b) (((a) > (b)) ? (a) : (b))

#endif

#ifndef ROUND_UP

#define ROUND_UP(n,d) (((n) + (d) - 1) & -(d))

#endif

#ifndef DIV_ROUND_UP

#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))

#endif

#ifndef ARRAY_SIZE

#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))

#endif

#ifndef always_inline

#if !((__GNUC__ < 3) || defined(__APPLE__))

#ifdef __OPTIMIZE__

#undef inline

#define inline __attribute__ (( always_inline )) __inline__

#endif

#endif

#else

#undef inline

#define inline always_inline

#endif

#define qemu_printf printf

int qemu_daemon(int nochdir, int noclose);

void *qemu_memalign(size_t alignment, size_t size);

void *qemu_anon_ram_alloc(size_t size);

void qemu_vfree(void *ptr);

void qemu_anon_ram_free(void *ptr, size_t size);

#define QEMU_MADV_INVALID -1

#if defined(CONFIG_MADVISE)

#define QEMU_MADV_WILLNEED  MADV_WILLNEED

#define QEMU_MADV_DONTNEED  MADV_DONTNEED

#ifdef MADV_DONTFORK

#define QEMU_MADV_DONTFORK  MADV_DONTFORK

#else

#define QEMU_MADV_DONTFORK  QEMU_MADV_INVALID

#endif

#ifdef MADV_MERGEABLE

#define QEMU_MADV_MERGEABLE MADV_MERGEABLE

#else

#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID

#endif

#ifdef MADV_DONTDUMP

#define QEMU_MADV_DONTDUMP MADV_DONTDUMP

#else

#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID

#endif

#ifdef MADV_HUGEPAGE

#define QEMU_MADV_HUGEPAGE MADV_HUGEPAGE

#else

#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID

#endif

#elif defined(CONFIG_POSIX_MADVISE)

#define QEMU_MADV_WILLNEED  POSIX_MADV_WILLNEED

#define QEMU_MADV_DONTNEED  POSIX_MADV_DONTNEED

#define QEMU_MADV_DONTFORK  QEMU_MADV_INVALID

#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID

#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID

#define QEMU_MADV_HUGEPAGE  QEMU_MADV_INVALID

#else /* no-op */

#define QEMU_MADV_WILLNEED  QEMU_MADV_INVALID

#define QEMU_MADV_DONTNEED  QEMU_MADV_INVALID

#define QEMU_MADV_DONTFORK  QEMU_MADV_INVALID

#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID

#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID

#define QEMU_MADV_HUGEPAGE  QEMU_MADV_INVALID

#endif

int qemu_madvise(void *addr, size_t len, int advice);

int qemu_open(const char *name, int flags, ...);

int qemu_close(int fd);

#if defined(__HAIKU__) && defined(__i386__)

#define FMT_pid "%ld"

#elif defined(WIN64)

#define FMT_pid "%" PRId64

#else

#define FMT_pid "%d"

#endif

int qemu_create_pidfile(const char *filename);

int qemu_get_thread_id(void);

#ifndef CONFIG_IOVEC

struct iovec {

    void *iov_base;

    size_t iov_len;

};

/*

 * Use the same value as Linux for now.

 */

#define IOV_MAX 1024

ssize_t readv(int fd, const struct iovec *iov, int iov_cnt);

ssize_t writev(int fd, const struct iovec *iov, int iov_cnt);

#else

#include <sys/uio.h>

#endif

#ifdef _WIN32

static inline void qemu_timersub(const struct timeval *val1,

                                 const struct timeval *val2,

                                 struct timeval *res)

{

    res->tv_sec = val1->tv_sec - val2->tv_sec;

    if (val1->tv_usec < val2->tv_usec) {

        res->tv_sec--;

        res->tv_usec = val1->tv_usec - val2->tv_usec + 1000 * 1000;

    } else {

        res->tv_usec = val1->tv_usec - val2->tv_usec;

    }

}

#else

#define qemu_timersub timersub

#endif

void qemu_set_cloexec(int fd);

void qemu_set_version(const char *);

const char *qemu_get_version(void);

void fips_set_state(bool requested);

bool fips_get_state(void);

/* Return a dynamically allocated pathname denoting a file or directory that is

 * appropriate for storing local state.

 *

 * @relative_pathname need not start with a directory separator; one will be

 * added automatically.

 *

 * The caller is responsible for releasing the value returned with g_free()

 * after use.

 */

char *qemu_get_local_state_pathname(const char *relative_pathname);

/* Find program directory, and save it for later usage with

 * qemu_get_exec_dir().

 * Try OS specific API first, if not working, parse from argv0. */

void qemu_init_exec_dir(const char *argv0);

/* Get the saved exec dir.

 * Caller needs to release the returned string by g_free() */

char *qemu_get_exec_dir(void);

/**

 * qemu_getauxval:

 * @type: the auxiliary vector key to lookup

 *

 * Search the auxiliary vector for @type, returning the value

 * or 0 if @type is not present.

 */

#if defined(CONFIG_GETAUXVAL) || defined(__linux__)

unsigned long qemu_getauxval(unsigned long type);

#else

static inline unsigned long qemu_getauxval(unsigned long type) { return 0; }

#endif

/**

 * qemu_init_auxval:

 * @envp: the third argument to main

 *

 * If supported and required, locate the auxiliary vector at program startup.

 */

#if defined(CONFIG_GETAUXVAL) || !defined(__linux__)

static inline void qemu_init_auxval(char **envp) { }

#else

void qemu_init_auxval(char **envp);

#endif

void qemu_set_tty_echo(int fd, bool echo);

#endif