#include "glib-compat.h"
#include "qemu/typedefs.h"
+/*
+ * We have a lot of unaudited code that may fail in strange ways, or
+ * even be a security risk during migration, if you disable assertions
+ * at compile-time. You may comment out these safety checks if you
+ * absolutely want to disable assertion overhead, but it is not
+ * supported upstream so the risk is all yours. Meanwhile, please
+ * submit patches to remove any side-effects inside an assertion, or
+ * fixing error handling that should use Error instead of assert.
+ */
+#ifdef NDEBUG
+#error building with NDEBUG is not supported
+#endif
+#ifdef G_DISABLE_ASSERT
+#error building with G_DISABLE_ASSERT is not supported
+#endif
+
#ifndef O_LARGEFILE
#define O_LARGEFILE 0
#endif
#if !defined(ESHUTDOWN)
#define ESHUTDOWN 4099
#endif
+
+/* time_t may be either 32 or 64 bits depending on the host OS, and
+ * can be either signed or unsigned, so we can't just hardcode a
+ * specific maximum value. This is not a C preprocessor constant,
+ * so you can't use TIME_MAX in an #ifdef, but for our purposes
+ * this isn't a problem.
+ */
+
+/* The macros TYPE_SIGNED, TYPE_WIDTH, and TYPE_MAXIMUM are from
+ * Gnulib, and are under the LGPL v2.1 or (at your option) any
+ * later version.
+ */
+
+/* True if the real type T is signed. */
+#define TYPE_SIGNED(t) (!((t)0 < (t)-1))
+
+/* The width in bits of the integer type or expression T.
+ * Padding bits are not supported.
+ */
+#define TYPE_WIDTH(t) (sizeof(t) * CHAR_BIT)
+
+/* The maximum and minimum values for the integer type T. */
+#define TYPE_MAXIMUM(t) \
+ ((t) (!TYPE_SIGNED(t) \
+ ? (t)-1 \
+ : ((((t)1 << (TYPE_WIDTH(t) - 2)) - 1) * 2 + 1)))
+
#ifndef TIME_MAX
-#define TIME_MAX LONG_MAX
+#define TIME_MAX TYPE_MAXIMUM(time_t)
#endif
/* HOST_LONG_BITS is the size of a native pointer in bits. */
/* Round number up to multiple. Requires that d be a power of 2 (see
* QEMU_ALIGN_UP for a safer but slower version on arbitrary
- * numbers) */
+ * numbers); works even if d is a smaller type than n. */
#ifndef ROUND_UP
-#define ROUND_UP(n,d) (((n) + (d) - 1) & -(d))
+#define ROUND_UP(n, d) (((n) + (d) - 1) & -(0 ? (n) : (d)))
#endif
#ifndef DIV_ROUND_UP
-#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
+#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
#endif
/*
int qemu_daemon(int nochdir, int noclose);
void *qemu_try_memalign(size_t alignment, size_t size);
void *qemu_memalign(size_t alignment, size_t size);
-void *qemu_anon_ram_alloc(size_t size, uint64_t *align);
+void *qemu_anon_ram_alloc(size_t size, uint64_t *align, bool shared);
void qemu_vfree(void *ptr);
void qemu_anon_ram_free(void *ptr, size_t size);
#else
#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
#endif
+#ifdef MADV_REMOVE
+#define QEMU_MADV_REMOVE MADV_REMOVE
+#else
+#define QEMU_MADV_REMOVE QEMU_MADV_INVALID
+#endif
#elif defined(CONFIG_POSIX_MADVISE)
#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID
#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID
#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
+#define QEMU_MADV_REMOVE QEMU_MADV_INVALID
#else /* no-op */
#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID
#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID
#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
+#define QEMU_MADV_REMOVE QEMU_MADV_INVALID
+
+#endif
+
+#ifdef _WIN32
+#define HAVE_CHARDEV_SERIAL 1
+#elif defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
+ || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
+ || defined(__GLIBC__)
+#define HAVE_CHARDEV_SERIAL 1
+#endif
+#if defined(__linux__) || defined(__FreeBSD__) || \
+ defined(__FreeBSD_kernel__) || defined(__DragonFly__)
+#define HAVE_CHARDEV_PARPORT 1
#endif
#if defined(CONFIG_LINUX)
#elif defined(__linux__) && defined(__s390x__)
/* Use 1 MiB (segment size) alignment so gmap can be used by KVM. */
# define QEMU_VMALLOC_ALIGN (256 * 4096)
+#elif defined(__linux__) && defined(__sparc__)
+#include <sys/shm.h>
+# define QEMU_VMALLOC_ALIGN MAX(getpagesize(), SHMLBA)
#else
# define QEMU_VMALLOC_ALIGN getpagesize()
#endif
#endif
int qemu_madvise(void *addr, size_t len, int advice);
+int qemu_mprotect_rwx(void *addr, size_t size);
+int qemu_mprotect_none(void *addr, size_t size);
int qemu_open(const char *name, int flags, ...);
int qemu_close(int fd);
int qemu_lock_fd(int fd, int64_t start, int64_t len, bool exclusive);
int qemu_unlock_fd(int fd, int64_t start, int64_t len);
int qemu_lock_fd_test(int fd, int64_t start, int64_t len, bool exclusive);
+bool qemu_has_ofd_lock(void);
#if defined(__HAIKU__) && defined(__i386__)
#define FMT_pid "%ld"
void os_mem_prealloc(int fd, char *area, size_t sz, int smp_cpus,
Error **errp);
-int qemu_read_password(char *buf, int buf_size);
-
/**
* qemu_get_pid_name:
* @pid: pid of a process
*/
pid_t qemu_fork(Error **errp);
+/* Using intptr_t ensures that qemu_*_page_mask is sign-extended even
+ * when intptr_t is 32-bit and we are aligning a long long.
+ */
+extern uintptr_t qemu_real_host_page_size;
+extern intptr_t qemu_real_host_page_mask;
+
+extern int qemu_icache_linesize;
+extern int qemu_dcache_linesize;
+
#endif
projects / qemu.git / blobdiff