2012-08-06 18:42:50 +00:00
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2007-11-11 02:51:17 +00:00
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/* Common header file that is included by all of qemu. */
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#ifndef QEMU_COMMON_H
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#define QEMU_COMMON_H
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2011-07-11 17:24:44 +00:00
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#include "compiler.h"
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2010-01-15 11:56:41 +00:00
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#include "config-host.h"
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2011-07-28 10:10:28 +00:00
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#if defined(__arm__) || defined(__sparc__) || defined(__mips__) || defined(__hppa__) || defined(__ia64__)
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#define WORDS_ALIGNED
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#endif
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2011-03-27 09:04:57 +00:00
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#define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
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2010-02-18 20:25:23 +00:00
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2010-03-29 19:24:00 +00:00
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typedef struct QEMUTimer QEMUTimer;
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typedef struct QEMUFile QEMUFile;
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2010-06-19 07:47:42 +00:00
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typedef struct DeviceState DeviceState;
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2010-03-29 19:24:00 +00:00
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2011-03-02 07:56:09 +00:00
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struct Monitor;
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typedef struct Monitor Monitor;
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2012-06-19 15:43:09 +00:00
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typedef struct MigrationParams MigrationParams;
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2011-03-02 07:56:09 +00:00
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2007-11-11 02:51:17 +00:00
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/* we put basic includes here to avoid repeating them in device drivers */
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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2010-06-13 18:00:50 +00:00
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#include <stdbool.h>
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2007-11-11 02:51:17 +00:00
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#include <string.h>
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2008-11-12 17:18:41 +00:00
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#include <strings.h>
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2007-11-11 02:51:17 +00:00
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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 <unistd.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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2011-03-06 13:23:13 +00:00
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#include <sys/time.h>
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2009-05-13 19:51:49 +00:00
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#include <assert.h>
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2011-06-02 02:21:30 +00:00
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#include <signal.h>
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2011-08-21 03:18:37 +00:00
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#include <glib.h>
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2007-11-11 02:51:17 +00:00
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2011-03-27 09:04:57 +00:00
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#ifdef _WIN32
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#include "qemu-os-win32.h"
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#endif
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#ifdef CONFIG_POSIX
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#include "qemu-os-posix.h"
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#endif
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2007-11-11 02:51:17 +00:00
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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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2009-07-27 14:12:57 +00:00
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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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2007-11-11 02:51:17 +00:00
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#ifndef ENOMEDIUM
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#define ENOMEDIUM ENODEV
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#endif
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2009-07-28 20:48:31 +00:00
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#if !defined(ENOTSUP)
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2009-07-27 14:13:22 +00:00
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#define ENOTSUP 4096
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#endif
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2012-05-10 07:27:50 +00:00
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#if !defined(ECANCELED)
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#define ECANCELED 4097
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#endif
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2010-10-07 09:50:45 +00:00
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#ifndef TIME_MAX
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#define TIME_MAX LONG_MAX
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#endif
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2007-11-11 02:51:17 +00:00
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2012-02-01 20:04:13 +00:00
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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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2009-07-27 14:12:59 +00:00
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#ifndef CONFIG_IOVEC
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#define CONFIG_IOVEC
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2008-12-05 20:05:26 +00:00
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struct iovec {
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void *iov_base;
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size_t iov_len;
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};
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2010-01-26 13:49:08 +00:00
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/*
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* Use the same value as Linux for now.
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*/
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#define IOV_MAX 1024
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2008-12-06 19:44:56 +00:00
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#else
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#include <sys/uio.h>
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2008-12-05 20:05:26 +00:00
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#endif
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2010-10-22 21:03:30 +00:00
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typedef int (*fprintf_function)(FILE *f, const char *fmt, ...)
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GCC_FMT_ATTR(2, 3);
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2007-11-11 02:51:17 +00:00
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#ifdef _WIN32
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#define fsync _commit
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2012-03-10 10:14:31 +00:00
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#if !defined(lseek)
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# define lseek _lseeki64
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#endif
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2011-01-23 16:21:20 +00:00
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int qemu_ftruncate64(int, int64_t);
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2012-03-10 10:14:31 +00:00
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#if !defined(ftruncate)
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# define ftruncate qemu_ftruncate64
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#endif
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2007-11-11 02:51:17 +00:00
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static inline char *realpath(const char *path, char *resolved_path)
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{
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_fullpath(resolved_path, path, _MAX_PATH);
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return resolved_path;
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}
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#endif
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2011-09-12 11:57:37 +00:00
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/* icount */
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void configure_icount(const char *option);
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extern int use_icount;
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2007-11-11 02:51:17 +00:00
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/* FIXME: Remove NEED_CPU_H. */
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#ifndef NEED_CPU_H
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#include "osdep.h"
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#include "bswap.h"
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#else
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#include "cpu.h"
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#endif /* !defined(NEED_CPU_H) */
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2011-05-29 17:42:51 +00:00
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/* main function, renamed */
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#if defined(CONFIG_COCOA)
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int qemu_main(int argc, char **argv, char **envp);
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#endif
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2008-02-17 11:42:19 +00:00
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void qemu_get_timedate(struct tm *tm, int offset);
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int qemu_timedate_diff(struct tm *tm);
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2012-08-02 12:45:54 +00:00
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/**
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* is_help_option:
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* @s: string to test
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*
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* Check whether @s is one of the standard strings which indicate
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* that the user is asking for a list of the valid values for a
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* command option like -cpu or -M. The current accepted strings
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* are 'help' and '?'. '?' is deprecated (it is a shell wildcard
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* which makes it annoying to use in a reliable way) but provided
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* for backwards compatibility.
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*
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* Returns: true if @s is a request for a list.
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*/
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static inline bool is_help_option(const char *s)
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{
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return !strcmp(s, "?") || !strcmp(s, "help");
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}
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2007-11-11 02:51:17 +00:00
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/* cutils.c */
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void pstrcpy(char *buf, int buf_size, const char *str);
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2012-07-09 06:50:43 +00:00
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void strpadcpy(char *buf, int buf_size, const char *str, char pad);
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2007-11-11 02:51:17 +00:00
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char *pstrcat(char *buf, int buf_size, const char *s);
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int strstart(const char *str, const char *val, const char **ptr);
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int stristart(const char *str, const char *val, const char **ptr);
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2009-07-01 18:24:44 +00:00
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int qemu_strnlen(const char *s, int max_len);
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2007-11-11 02:51:17 +00:00
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time_t mktimegm(struct tm *tm);
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2008-12-11 19:37:54 +00:00
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int qemu_fls(int i);
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2009-09-04 17:01:32 +00:00
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int qemu_fdatasync(int fd);
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2010-03-10 10:38:55 +00:00
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int fcntl_setfl(int fd, int flag);
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2011-09-28 10:41:32 +00:00
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int qemu_parse_fd(const char *param);
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2012-08-14 20:43:47 +00:00
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int qemu_parse_fdset(const char *param);
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2010-12-09 13:17:24 +00:00
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2011-01-26 10:54:58 +00:00
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/*
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* strtosz() suffixes used to specify the default treatment of an
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* argument passed to strtosz() without an explicit suffix.
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* These should be defined using upper case characters in the range
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* A-Z, as strtosz() will use qemu_toupper() on the given argument
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* prior to comparison.
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*/
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2010-12-09 13:17:24 +00:00
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#define STRTOSZ_DEFSUFFIX_TB 'T'
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#define STRTOSZ_DEFSUFFIX_GB 'G'
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#define STRTOSZ_DEFSUFFIX_MB 'M'
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#define STRTOSZ_DEFSUFFIX_KB 'K'
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#define STRTOSZ_DEFSUFFIX_B 'B'
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2011-01-05 10:41:02 +00:00
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int64_t strtosz(const char *nptr, char **end);
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int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix);
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2011-07-07 14:13:11 +00:00
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int64_t strtosz_suffix_unit(const char *nptr, char **end,
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const char default_suffix, int64_t unit);
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2007-11-11 02:51:17 +00:00
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2009-08-15 07:51:59 +00:00
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/* path.c */
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void init_paths(const char *prefix);
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const char *path(const char *pathname);
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2008-11-16 13:53:32 +00:00
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#define qemu_isalnum(c) isalnum((unsigned char)(c))
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#define qemu_isalpha(c) isalpha((unsigned char)(c))
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#define qemu_iscntrl(c) iscntrl((unsigned char)(c))
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#define qemu_isdigit(c) isdigit((unsigned char)(c))
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#define qemu_isgraph(c) isgraph((unsigned char)(c))
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#define qemu_islower(c) islower((unsigned char)(c))
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#define qemu_isprint(c) isprint((unsigned char)(c))
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#define qemu_ispunct(c) ispunct((unsigned char)(c))
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#define qemu_isspace(c) isspace((unsigned char)(c))
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#define qemu_isupper(c) isupper((unsigned char)(c))
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#define qemu_isxdigit(c) isxdigit((unsigned char)(c))
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#define qemu_tolower(c) tolower((unsigned char)(c))
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#define qemu_toupper(c) toupper((unsigned char)(c))
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#define qemu_isascii(c) isascii((unsigned char)(c))
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#define qemu_toascii(c) toascii((unsigned char)(c))
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2010-10-26 08:39:26 +00:00
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void *qemu_oom_check(void *ptr);
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2008-04-11 21:35:42 +00:00
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2009-12-02 11:24:42 +00:00
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int qemu_open(const char *name, int flags, ...);
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2012-08-14 20:43:46 +00:00
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int qemu_close(int fd);
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2010-01-19 23:56:09 +00:00
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ssize_t qemu_write_full(int fd, const void *buf, size_t count)
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QEMU_WARN_UNUSED_RESULT;
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2011-09-17 14:27:59 +00:00
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ssize_t qemu_send_full(int fd, const void *buf, size_t count, int flags)
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QEMU_WARN_UNUSED_RESULT;
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2011-09-08 11:46:25 +00:00
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ssize_t qemu_recv_full(int fd, void *buf, size_t count, int flags)
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2011-09-17 14:27:59 +00:00
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QEMU_WARN_UNUSED_RESULT;
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2009-12-02 11:24:42 +00:00
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#ifndef _WIN32
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2010-02-10 23:23:46 +00:00
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int qemu_eventfd(int pipefd[2]);
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2009-12-02 11:24:42 +00:00
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int qemu_pipe(int pipefd[2]);
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#endif
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2011-07-23 20:04:29 +00:00
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#ifdef _WIN32
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2012-09-28 17:07:39 +00:00
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/* MinGW needs type casts for the 'buf' and 'optval' arguments. */
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#define qemu_getsockopt(sockfd, level, optname, optval, optlen) \
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getsockopt(sockfd, level, optname, (void *)optval, optlen)
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#define qemu_setsockopt(sockfd, level, optname, optval, optlen) \
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setsockopt(sockfd, level, optname, (const void *)optval, optlen)
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2011-07-23 20:04:29 +00:00
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#define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
|
2012-09-22 19:13:28 +00:00
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#define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
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sendto(sockfd, (const void *)buf, len, flags, destaddr, addrlen)
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2011-07-23 20:04:29 +00:00
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#else
|
2012-09-28 17:07:39 +00:00
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#define qemu_getsockopt(sockfd, level, optname, optval, optlen) \
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getsockopt(sockfd, level, optname, optval, optlen)
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#define qemu_setsockopt(sockfd, level, optname, optval, optlen) \
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setsockopt(sockfd, level, optname, optval, optlen)
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2011-07-23 20:04:29 +00:00
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#define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags)
|
2012-09-22 19:13:28 +00:00
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#define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
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sendto(sockfd, buf, len, flags, destaddr, addrlen)
|
2011-07-23 20:04:29 +00:00
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#endif
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|
2007-11-17 17:14:51 +00:00
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/* Error handling. */
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2010-09-23 19:28:03 +00:00
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void QEMU_NORETURN hw_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
|
2007-11-17 17:14:51 +00:00
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struct ParallelIOArg {
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void *buffer;
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|
|
int count;
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};
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typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);
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/* A load of opaque types so that device init declarations don't have to
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|
pull in all the real definitions. */
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typedef struct NICInfo NICInfo;
|
2008-09-28 23:19:47 +00:00
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|
typedef struct HCIInfo HCIInfo;
|
2007-11-17 17:14:51 +00:00
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|
typedef struct AudioState AudioState;
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|
|
typedef struct BlockDriverState BlockDriverState;
|
2010-08-24 15:22:24 +00:00
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|
typedef struct DriveInfo DriveInfo;
|
2007-11-17 17:14:51 +00:00
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|
typedef struct DisplayState DisplayState;
|
2009-01-15 22:14:11 +00:00
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|
typedef struct DisplayChangeListener DisplayChangeListener;
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typedef struct DisplaySurface DisplaySurface;
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|
typedef struct PixelFormat PixelFormat;
|
2012-09-28 11:24:17 +00:00
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typedef struct QemuConsole QemuConsole;
|
2007-11-17 17:14:51 +00:00
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typedef struct CharDriverState CharDriverState;
|
2009-10-21 13:25:22 +00:00
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|
typedef struct MACAddr MACAddr;
|
2012-07-24 15:35:13 +00:00
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|
typedef struct NetClientState NetClientState;
|
2007-11-17 17:14:51 +00:00
|
|
|
typedef struct i2c_bus i2c_bus;
|
2011-12-15 21:09:51 +00:00
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|
|
typedef struct ISABus ISABus;
|
2012-05-11 15:22:19 +00:00
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|
|
typedef struct ISADevice ISADevice;
|
2007-11-17 17:14:51 +00:00
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|
typedef struct SMBusDevice SMBusDevice;
|
2009-11-12 05:58:41 +00:00
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|
typedef struct PCIHostState PCIHostState;
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|
|
typedef struct PCIExpressHost PCIExpressHost;
|
2007-11-17 17:14:51 +00:00
|
|
|
typedef struct PCIBus PCIBus;
|
|
|
|
typedef struct PCIDevice PCIDevice;
|
2010-10-19 09:06:34 +00:00
|
|
|
typedef struct PCIExpressDevice PCIExpressDevice;
|
2010-07-13 04:01:42 +00:00
|
|
|
typedef struct PCIBridge PCIBridge;
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2010-11-16 08:26:09 +00:00
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typedef struct PCIEAERMsg PCIEAERMsg;
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typedef struct PCIEAERLog PCIEAERLog;
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typedef struct PCIEAERErr PCIEAERErr;
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2010-10-20 08:18:52 +00:00
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typedef struct PCIEPort PCIEPort;
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typedef struct PCIESlot PCIESlot;
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2012-05-16 18:41:09 +00:00
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typedef struct MSIMessage MSIMessage;
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2007-11-17 17:14:51 +00:00
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typedef struct SerialState SerialState;
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typedef struct IRQState *qemu_irq;
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2009-05-10 00:44:56 +00:00
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typedef struct PCMCIACardState PCMCIACardState;
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typedef struct MouseTransformInfo MouseTransformInfo;
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typedef struct uWireSlave uWireSlave;
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typedef struct I2SCodec I2SCodec;
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2009-05-14 21:35:09 +00:00
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typedef struct SSIBus SSIBus;
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2010-03-17 11:07:58 +00:00
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typedef struct EventNotifier EventNotifier;
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2010-03-17 11:08:10 +00:00
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typedef struct VirtIODevice VirtIODevice;
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2011-07-12 11:36:23 +00:00
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typedef struct QEMUSGList QEMUSGList;
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2012-02-12 12:12:21 +00:00
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typedef struct SHPCDevice SHPCDevice;
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2007-11-17 17:14:51 +00:00
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2010-02-10 19:25:42 +00:00
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typedef uint64_t pcibus_t;
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2012-01-23 19:15:11 +00:00
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typedef enum LostTickPolicy {
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LOST_TICK_DISCARD,
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LOST_TICK_DELAY,
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LOST_TICK_MERGE,
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LOST_TICK_SLEW,
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2012-02-02 21:09:44 +00:00
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LOST_TICK_MAX
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2012-01-23 19:15:11 +00:00
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} LostTickPolicy;
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2012-06-21 15:36:23 +00:00
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typedef struct PCIHostDeviceAddress {
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unsigned int domain;
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unsigned int bus;
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unsigned int slot;
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unsigned int function;
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} PCIHostDeviceAddress;
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2011-08-02 14:10:21 +00:00
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void tcg_exec_init(unsigned long tb_size);
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bool tcg_enabled(void);
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void cpu_exec_init_all(void);
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2010-03-29 19:23:48 +00:00
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2008-06-30 16:31:04 +00:00
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/* CPU save/load. */
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void cpu_save(QEMUFile *f, void *opaque);
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int cpu_load(QEMUFile *f, void *opaque, int version_id);
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2009-04-24 18:03:45 +00:00
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/* Unblock cpu */
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void qemu_cpu_kick(void *env);
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2011-02-01 21:15:59 +00:00
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void qemu_cpu_kick_self(void);
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2011-03-12 16:43:51 +00:00
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int qemu_cpu_is_self(void *env);
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2009-04-24 18:03:45 +00:00
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2010-05-04 12:45:22 +00:00
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/* work queue */
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struct qemu_work_item {
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struct qemu_work_item *next;
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void (*func)(void *data);
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void *data;
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int done;
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};
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2009-04-24 18:03:41 +00:00
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#ifdef CONFIG_USER_ONLY
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#define qemu_init_vcpu(env) do { } while (0)
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#else
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void qemu_init_vcpu(void *env);
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#endif
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2011-09-08 11:46:25 +00:00
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/**
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2012-06-07 16:22:46 +00:00
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* Sends a (part of) iovec down a socket, yielding when the socket is full, or
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* Receives data into a (part of) iovec from a socket,
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* yielding when there is no data in the socket.
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* The same interface as qemu_sendv_recvv(), with added yielding.
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* XXX should mark these as coroutine_fn
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2011-09-08 11:46:25 +00:00
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*/
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2012-06-07 16:22:46 +00:00
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ssize_t qemu_co_sendv_recvv(int sockfd, struct iovec *iov, unsigned iov_cnt,
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size_t offset, size_t bytes, bool do_send);
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#define qemu_co_recvv(sockfd, iov, iov_cnt, offset, bytes) \
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qemu_co_sendv_recvv(sockfd, iov, iov_cnt, offset, bytes, false)
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#define qemu_co_sendv(sockfd, iov, iov_cnt, offset, bytes) \
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qemu_co_sendv_recvv(sockfd, iov, iov_cnt, offset, bytes, true)
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2011-09-08 11:46:25 +00:00
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/**
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2012-06-07 16:22:46 +00:00
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* The same as above, but with just a single buffer
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2011-09-08 11:46:25 +00:00
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*/
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2012-06-07 16:22:46 +00:00
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ssize_t qemu_co_send_recv(int sockfd, void *buf, size_t bytes, bool do_send);
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#define qemu_co_recv(sockfd, buf, bytes) \
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qemu_co_send_recv(sockfd, buf, bytes, false)
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#define qemu_co_send(sockfd, buf, bytes) \
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qemu_co_send_recv(sockfd, buf, bytes, true)
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2011-09-08 11:46:25 +00:00
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2009-01-22 16:59:20 +00:00
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typedef struct QEMUIOVector {
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struct iovec *iov;
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int niov;
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int nalloc;
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2009-01-26 17:17:52 +00:00
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size_t size;
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2009-01-22 16:59:20 +00:00
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} QEMUIOVector;
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void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
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2009-03-28 17:46:10 +00:00
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void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov);
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2009-01-22 16:59:20 +00:00
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void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len);
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consolidate qemu_iovec_copy() and qemu_iovec_concat() and make them consistent
qemu_iovec_concat() is currently a wrapper for
qemu_iovec_copy(), use the former (with extra
"0" arg) in a few places where it is used.
Change skip argument of qemu_iovec_copy() from
uint64_t to size_t, since size of qiov itself
is size_t, so there's no way to skip larger
sizes. Rename it to soffset, to make it clear
that the offset is applied to src.
Also change the only usage of uint64_t in
hw/9pfs/virtio-9p.c, in v9fs_init_qiov_from_pdu() -
all callers of it actually uses size_t too,
not uint64_t.
One added restriction: as for all other iovec-related
functions, soffset must point inside src.
Order of argumens is already good:
qemu_iovec_memset(QEMUIOVector *qiov, size_t offset,
int c, size_t bytes)
vs:
qemu_iovec_concat(QEMUIOVector *dst,
QEMUIOVector *src,
size_t soffset, size_t sbytes)
(note soffset is after _src_ not dst, since it applies to src;
for memset it applies to qiov).
Note that in many places where this function is used,
the previous call is qemu_iovec_reset(), which means
many callers actually want copy (replacing dst content),
not concat. So we may want to add a wrapper like
qemu_iovec_copy() with the same arguments but which
calls qemu_iovec_reset() before _concat().
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2012-03-12 17:28:06 +00:00
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void qemu_iovec_concat(QEMUIOVector *dst,
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QEMUIOVector *src, size_t soffset, size_t sbytes);
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2009-01-22 16:59:20 +00:00
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void qemu_iovec_destroy(QEMUIOVector *qiov);
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2009-02-05 21:23:54 +00:00
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void qemu_iovec_reset(QEMUIOVector *qiov);
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2012-06-07 16:21:06 +00:00
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size_t qemu_iovec_to_buf(QEMUIOVector *qiov, size_t offset,
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void *buf, size_t bytes);
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allow qemu_iovec_from_buffer() to specify offset from which to start copying
Similar to
qemu_iovec_memset(QEMUIOVector *qiov, size_t offset,
int c, size_t bytes);
the new prototype is:
qemu_iovec_from_buf(QEMUIOVector *qiov, size_t offset,
const void *buf, size_t bytes);
The processing starts at offset bytes within qiov.
This way, we may copy a bounce buffer directly to
a middle of qiov.
This is exactly the same function as iov_from_buf() from
iov.c, so use the existing implementation and rename it
to qemu_iovec_from_buf() to be shorter and to match the
utility function.
As with utility implementation, we now assert that the
offset is inside actual iovec. Nothing changed for
current callers, because `offset' parameter is new.
While at it, stop using "bounce-qiov" in block/qcow2.c
and copy decrypted data directly from cluster_data
instead of recreating a temp qiov for doing that.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2012-06-07 16:17:55 +00:00
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size_t qemu_iovec_from_buf(QEMUIOVector *qiov, size_t offset,
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const void *buf, size_t bytes);
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consolidate qemu_iovec_memset{,_skip}() into single function and use existing iov_memset()
This patch combines two functions into one, and replaces
the implementation with already existing iov_memset() from
iov.c.
The new prototype of qemu_iovec_memset():
size_t qemu_iovec_memset(qiov, size_t offset, int fillc, size_t bytes)
It is different from former qemu_iovec_memset_skip(), and
I want to make other functions to be consistent with it
too: first how much to skip, second what, and 3rd how many
of it. It also returns actual number of bytes filled in,
which may be less than the requested `bytes' if qiov is
smaller than offset+bytes, in the same way iov_memset()
does.
While at it, use utility function iov_memset() from
iov.h in posix-aio-compat.c, where qiov was used.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2012-03-10 12:54:23 +00:00
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size_t qemu_iovec_memset(QEMUIOVector *qiov, size_t offset,
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int fillc, size_t bytes);
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2009-01-22 16:59:20 +00:00
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2012-02-07 13:27:24 +00:00
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bool buffer_is_zero(const void *buf, size_t len);
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2011-03-30 12:16:25 +00:00
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void qemu_progress_init(int enabled, float min_skip);
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void qemu_progress_end(void);
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2011-05-09 15:32:20 +00:00
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void qemu_progress_print(float delta, int max);
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2012-08-06 08:24:55 +00:00
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const char *qemu_get_vm_name(void);
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2011-03-30 12:16:25 +00:00
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2011-03-27 09:04:57 +00:00
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#define QEMU_FILE_TYPE_BIOS 0
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#define QEMU_FILE_TYPE_KEYMAP 1
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char *qemu_find_file(int type, const char *name);
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/* OS specific functions */
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void os_setup_early_signal_handling(void);
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char *os_find_datadir(const char *argv0);
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void os_parse_cmd_args(int index, const char *optarg);
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void os_pidfile_error(void);
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2009-11-20 00:03:47 +00:00
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/* Convert a byte between binary and BCD. */
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static inline uint8_t to_bcd(uint8_t val)
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{
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return ((val / 10) << 4) | (val % 10);
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}
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static inline uint8_t from_bcd(uint8_t val)
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{
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return ((val >> 4) * 10) + (val & 0x0f);
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}
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2010-10-29 21:41:01 +00:00
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/* compute with 96 bit intermediate result: (a*b)/c */
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static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
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{
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union {
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uint64_t ll;
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struct {
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#ifdef HOST_WORDS_BIGENDIAN
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uint32_t high, low;
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#else
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uint32_t low, high;
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#endif
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} l;
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} u, res;
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uint64_t rl, rh;
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u.ll = a;
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rl = (uint64_t)u.l.low * (uint64_t)b;
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rh = (uint64_t)u.l.high * (uint64_t)b;
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rh += (rl >> 32);
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res.l.high = rh / c;
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res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
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return res.ll;
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}
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2011-11-17 13:40:25 +00:00
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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 */
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#define QEMU_ALIGN_UP(n, m) QEMU_ALIGN_DOWN((n) + (m) - 1, (m))
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2012-08-06 18:42:50 +00:00
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static inline bool is_power_of_2(uint64_t value)
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{
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if (!value) {
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return 0;
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}
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return !(value & (value - 1));
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}
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/* round down to the nearest power of 2*/
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int64_t pow2floor(int64_t value);
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2009-05-14 18:29:53 +00:00
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#include "module.h"
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2012-08-06 18:42:51 +00:00
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/*
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* Implementation of ULEB128 (http://en.wikipedia.org/wiki/LEB128)
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* Input is limited to 14-bit numbers
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*/
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int uleb128_encode_small(uint8_t *out, uint32_t n);
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int uleb128_decode_small(const uint8_t *in, uint32_t *n);
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2007-11-11 02:51:17 +00:00
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#endif
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