[mirror_qemu.git] / include / qemu-common.h


/* Common header file that is included by all of QEMU.
 *
 * This file is supposed to be included only by .c files. No header file should
 * depend on qemu-common.h, as this would easily lead to circular header
 * dependencies.
 *
 * If a header file uses a definition from qemu-common.h, that definition
 * must be moved to a separate header file, and the header that uses it
 * must include that header.
 */
#ifndef QEMU_COMMON_H
#define QEMU_COMMON_H

#include "qemu/compiler.h"
#include "config-host.h"
#include "qemu/typedefs.h"

#if defined(__arm__) || defined(__sparc__) || defined(__mips__) || defined(__hppa__) || defined(__ia64__)
#define WORDS_ALIGNED
#endif

#define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)

/* we put basic includes here to avoid repeating them in device drivers */
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdbool.h>
#include <string.h>
#include <strings.h>
#include <inttypes.h>
#include <limits.h>
#include <time.h>
#include <ctype.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <assert.h>
#include <signal.h>
#include "glib-compat.h"
#include "qemu/option.h"

#ifdef _WIN32
#include "sysemu/os-win32.h"
#endif

#ifdef CONFIG_POSIX
#include "sysemu/os-posix.h"
#endif

#ifndef O_LARGEFILE
#define O_LARGEFILE 0
#endif
#ifndef O_BINARY
#define O_BINARY 0
#endif
#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS MAP_ANON
#endif
#ifndef ENOMEDIUM
#define ENOMEDIUM ENODEV
#endif
#if !defined(ENOTSUP)
#define ENOTSUP 4096
#endif
#if !defined(ECANCELED)
#define ECANCELED 4097
#endif
#if !defined(EMEDIUMTYPE)
#define EMEDIUMTYPE 4098
#endif
#ifndef TIME_MAX
#define TIME_MAX LONG_MAX
#endif

/* HOST_LONG_BITS is the size of a native pointer in bits. */
#if UINTPTR_MAX == UINT32_MAX
# define HOST_LONG_BITS 32
#elif UINTPTR_MAX == UINT64_MAX
# define HOST_LONG_BITS 64
#else
# error Unknown pointer size
#endif

typedef int (*fprintf_function)(FILE *f, const char *fmt, ...)
    GCC_FMT_ATTR(2, 3);

#ifdef _WIN32
#define fsync _commit
#if !defined(lseek)
# define lseek _lseeki64
#endif
int qemu_ftruncate64(int, int64_t);
#if !defined(ftruncate)
# define ftruncate qemu_ftruncate64
#endif

static inline char *realpath(const char *path, char *resolved_path)
{
    _fullpath(resolved_path, path, _MAX_PATH);
    return resolved_path;
}
#endif

void cpu_ticks_init(void);

/* icount */
void configure_icount(QemuOpts *opts, Error **errp);
extern int use_icount;
extern int icount_align_option;
/* drift information for info jit command */
extern int64_t max_delay;
extern int64_t max_advance;
void dump_drift_info(FILE *f, fprintf_function cpu_fprintf);

#include "qemu/osdep.h"
#include "qemu/bswap.h"

/* FIXME: Remove NEED_CPU_H.  */
#ifdef NEED_CPU_H
#include "cpu.h"
#endif /* !defined(NEED_CPU_H) */

/* main function, renamed */
#if defined(CONFIG_COCOA)
int qemu_main(int argc, char **argv, char **envp);
#endif

void qemu_get_timedate(struct tm *tm, int offset);
int qemu_timedate_diff(struct tm *tm);

/**
 * is_help_option:
 * @s: string to test
 *
 * Check whether @s is one of the standard strings which indicate
 * that the user is asking for a list of the valid values for a
 * command option like -cpu or -M. The current accepted strings
 * are 'help' and '?'. '?' is deprecated (it is a shell wildcard
 * which makes it annoying to use in a reliable way) but provided
 * for backwards compatibility.
 *
 * Returns: true if @s is a request for a list.
 */
static inline bool is_help_option(const char *s)
{
    return !strcmp(s, "?") || !strcmp(s, "help");
}

/* cutils.c */
void pstrcpy(char *buf, int buf_size, const char *str);
void strpadcpy(char *buf, int buf_size, const char *str, char pad);
char *pstrcat(char *buf, int buf_size, const char *s);
int strstart(const char *str, const char *val, const char **ptr);
int stristart(const char *str, const char *val, const char **ptr);
int qemu_strnlen(const char *s, int max_len);
char *qemu_strsep(char **input, const char *delim);
time_t mktimegm(struct tm *tm);
int qemu_fls(int i);
int qemu_fdatasync(int fd);
int fcntl_setfl(int fd, int flag);
int qemu_parse_fd(const char *param);

int parse_uint(const char *s, unsigned long long *value, char **endptr,
               int base);
int parse_uint_full(const char *s, unsigned long long *value, int base);

/*
 * strtosz() suffixes used to specify the default treatment of an
 * argument passed to strtosz() without an explicit suffix.
 * These should be defined using upper case characters in the range
 * A-Z, as strtosz() will use qemu_toupper() on the given argument
 * prior to comparison.
 */
#define STRTOSZ_DEFSUFFIX_EB	'E'
#define STRTOSZ_DEFSUFFIX_PB	'P'
#define STRTOSZ_DEFSUFFIX_TB	'T'
#define STRTOSZ_DEFSUFFIX_GB	'G'
#define STRTOSZ_DEFSUFFIX_MB	'M'
#define STRTOSZ_DEFSUFFIX_KB	'K'
#define STRTOSZ_DEFSUFFIX_B	'B'
int64_t strtosz(const char *nptr, char **end);
int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix);
int64_t strtosz_suffix_unit(const char *nptr, char **end,
                            const char default_suffix, int64_t unit);

/* used to print char* safely */
#define STR_OR_NULL(str) ((str) ? (str) : "null")

/* id.c */
bool id_wellformed(const char *id);

/* path.c */
void init_paths(const char *prefix);
const char *path(const char *pathname);

#define qemu_isalnum(c)		isalnum((unsigned char)(c))
#define qemu_isalpha(c)		isalpha((unsigned char)(c))
#define qemu_iscntrl(c)		iscntrl((unsigned char)(c))
#define qemu_isdigit(c)		isdigit((unsigned char)(c))
#define qemu_isgraph(c)		isgraph((unsigned char)(c))
#define qemu_islower(c)		islower((unsigned char)(c))
#define qemu_isprint(c)		isprint((unsigned char)(c))
#define qemu_ispunct(c)		ispunct((unsigned char)(c))
#define qemu_isspace(c)		isspace((unsigned char)(c))
#define qemu_isupper(c)		isupper((unsigned char)(c))
#define qemu_isxdigit(c)	isxdigit((unsigned char)(c))
#define qemu_tolower(c)		tolower((unsigned char)(c))
#define qemu_toupper(c)		toupper((unsigned char)(c))
#define qemu_isascii(c)		isascii((unsigned char)(c))
#define qemu_toascii(c)		toascii((unsigned char)(c))

void *qemu_oom_check(void *ptr);

ssize_t qemu_write_full(int fd, const void *buf, size_t count)
    QEMU_WARN_UNUSED_RESULT;
ssize_t qemu_send_full(int fd, const void *buf, size_t count, int flags)
    QEMU_WARN_UNUSED_RESULT;
ssize_t qemu_recv_full(int fd, void *buf, size_t count, int flags)
    QEMU_WARN_UNUSED_RESULT;

#ifndef _WIN32
int qemu_pipe(int pipefd[2]);
/* like openpty() but also makes it raw; return master fd */
int qemu_openpty_raw(int *aslave, char *pty_name);
#endif

#ifdef _WIN32
/* MinGW needs type casts for the 'buf' and 'optval' arguments. */
#define qemu_getsockopt(sockfd, level, optname, optval, optlen) \
    getsockopt(sockfd, level, optname, (void *)optval, optlen)
#define qemu_setsockopt(sockfd, level, optname, optval, optlen) \
    setsockopt(sockfd, level, optname, (const void *)optval, optlen)
#define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
#define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
    sendto(sockfd, (const void *)buf, len, flags, destaddr, addrlen)
#else
#define qemu_getsockopt(sockfd, level, optname, optval, optlen) \
    getsockopt(sockfd, level, optname, optval, optlen)
#define qemu_setsockopt(sockfd, level, optname, optval, optlen) \
    setsockopt(sockfd, level, optname, optval, optlen)
#define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags)
#define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
    sendto(sockfd, buf, len, flags, destaddr, addrlen)
#endif

/* Error handling.  */

void QEMU_NORETURN hw_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);

struct ParallelIOArg {
    void *buffer;
    int count;
};

typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);

typedef uint64_t pcibus_t;

typedef struct PCIHostDeviceAddress {
    unsigned int domain;
    unsigned int bus;
    unsigned int slot;
    unsigned int function;
} PCIHostDeviceAddress;

void tcg_exec_init(unsigned long tb_size);
bool tcg_enabled(void);

void cpu_exec_init_all(void);

/* CPU save/load.  */
#ifdef CPU_SAVE_VERSION
void cpu_save(QEMUFile *f, void *opaque);
int cpu_load(QEMUFile *f, void *opaque, int version_id);
#endif

/* Unblock cpu */
void qemu_cpu_kick_self(void);

/* work queue */
struct qemu_work_item {
    struct qemu_work_item *next;
    void (*func)(void *data);
    void *data;
    int done;
    bool free;
};


/**
 * Sends a (part of) iovec down a socket, yielding when the socket is full, or
 * Receives data into a (part of) iovec from a socket,
 * yielding when there is no data in the socket.
 * The same interface as qemu_sendv_recvv(), with added yielding.
 * XXX should mark these as coroutine_fn
 */
ssize_t qemu_co_sendv_recvv(int sockfd, struct iovec *iov, unsigned iov_cnt,
                            size_t offset, size_t bytes, bool do_send);
#define qemu_co_recvv(sockfd, iov, iov_cnt, offset, bytes) \
  qemu_co_sendv_recvv(sockfd, iov, iov_cnt, offset, bytes, false)
#define qemu_co_sendv(sockfd, iov, iov_cnt, offset, bytes) \
  qemu_co_sendv_recvv(sockfd, iov, iov_cnt, offset, bytes, true)

/**
 * The same as above, but with just a single buffer
 */
ssize_t qemu_co_send_recv(int sockfd, void *buf, size_t bytes, bool do_send);
#define qemu_co_recv(sockfd, buf, bytes) \
  qemu_co_send_recv(sockfd, buf, bytes, false)
#define qemu_co_send(sockfd, buf, bytes) \
  qemu_co_send_recv(sockfd, buf, bytes, true)

typedef struct QEMUIOVector {
    struct iovec *iov;
    int niov;
    int nalloc;
    size_t size;
} QEMUIOVector;

void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov);
void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len);
void qemu_iovec_concat(QEMUIOVector *dst,
                       QEMUIOVector *src, size_t soffset, size_t sbytes);
size_t qemu_iovec_concat_iov(QEMUIOVector *dst,
                             struct iovec *src_iov, unsigned int src_cnt,
                             size_t soffset, size_t sbytes);
bool qemu_iovec_is_zero(QEMUIOVector *qiov);
void qemu_iovec_destroy(QEMUIOVector *qiov);
void qemu_iovec_reset(QEMUIOVector *qiov);
size_t qemu_iovec_to_buf(QEMUIOVector *qiov, size_t offset,
                         void *buf, size_t bytes);
size_t qemu_iovec_from_buf(QEMUIOVector *qiov, size_t offset,
                           const void *buf, size_t bytes);
size_t qemu_iovec_memset(QEMUIOVector *qiov, size_t offset,
                         int fillc, size_t bytes);
ssize_t qemu_iovec_compare(QEMUIOVector *a, QEMUIOVector *b);
void qemu_iovec_clone(QEMUIOVector *dest, const QEMUIOVector *src, void *buf);
void qemu_iovec_discard_back(QEMUIOVector *qiov, size_t bytes);

bool buffer_is_zero(const void *buf, size_t len);

void qemu_progress_init(int enabled, float min_skip);
void qemu_progress_end(void);
void qemu_progress_print(float delta, int max);
const char *qemu_get_vm_name(void);

#define QEMU_FILE_TYPE_BIOS   0
#define QEMU_FILE_TYPE_KEYMAP 1
char *qemu_find_file(int type, const char *name);

/* OS specific functions */
void os_setup_early_signal_handling(void);
char *os_find_datadir(void);
void os_parse_cmd_args(int index, const char *optarg);

/* Convert a byte between binary and BCD.  */
static inline uint8_t to_bcd(uint8_t val)
{
    return ((val / 10) << 4) | (val % 10);
}

static inline uint8_t from_bcd(uint8_t val)
{
    return ((val >> 4) * 10) + (val & 0x0f);
}

/* compute with 96 bit intermediate result: (a*b)/c */
#ifdef CONFIG_INT128
static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
{
    return (__int128_t)a * b / c;
}
#else
static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
{
    union {
        uint64_t ll;
        struct {
#ifdef HOST_WORDS_BIGENDIAN
            uint32_t high, low;
#else
            uint32_t low, high;
#endif
        } l;
    } u, res;
    uint64_t rl, rh;

    u.ll = a;
    rl = (uint64_t)u.l.low * (uint64_t)b;
    rh = (uint64_t)u.l.high * (uint64_t)b;
    rh += (rl >> 32);
    res.l.high = rh / c;
    res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
    return res.ll;
}
#endif

/* Round number down to multiple */
#define QEMU_ALIGN_DOWN(n, m) ((n) / (m) * (m))

/* Round number up to multiple */
#define QEMU_ALIGN_UP(n, m) QEMU_ALIGN_DOWN((n) + (m) - 1, (m))

static inline bool is_power_of_2(uint64_t value)
{
    if (!value) {
        return 0;
    }

    return !(value & (value - 1));
}

/* round down to the nearest power of 2*/
int64_t pow2floor(int64_t value);

/* round up to the nearest power of 2 (0 if overflow) */
uint64_t pow2ceil(uint64_t value);

#include "qemu/module.h"

/*
 * Implementation of ULEB128 (http://en.wikipedia.org/wiki/LEB128)
 * Input is limited to 14-bit numbers
 */

int uleb128_encode_small(uint8_t *out, uint32_t n);
int uleb128_decode_small(const uint8_t *in, uint32_t *n);

/* unicode.c */
int mod_utf8_codepoint(const char *s, size_t n, char **end);

/*
 * Hexdump a buffer to a file. An optional string prefix is added to every line
 */

void qemu_hexdump(const char *buf, FILE *fp, const char *prefix, size_t size);

/* vector definitions */
#ifdef __ALTIVEC__
#include <altivec.h>
/* The altivec.h header says we're allowed to undef these for
 * C++ compatibility.  Here we don't care about C++, but we
 * undef them anyway to avoid namespace pollution.
 */
#undef vector
#undef pixel
#undef bool
#define VECTYPE        __vector unsigned char
#define SPLAT(p)       vec_splat(vec_ld(0, p), 0)
#define ALL_EQ(v1, v2) vec_all_eq(v1, v2)
/* altivec.h may redefine the bool macro as vector type.
 * Reset it to POSIX semantics. */
#define bool _Bool
#elif defined __SSE2__
#include <emmintrin.h>
#define VECTYPE        __m128i
#define SPLAT(p)       _mm_set1_epi8(*(p))
#define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF)
#else
#define VECTYPE        unsigned long
#define SPLAT(p)       (*(p) * (~0UL / 255))
#define ALL_EQ(v1, v2) ((v1) == (v2))
#endif

#define BUFFER_FIND_NONZERO_OFFSET_UNROLL_FACTOR 8
static inline bool
can_use_buffer_find_nonzero_offset(const void *buf, size_t len)
{
    return (len % (BUFFER_FIND_NONZERO_OFFSET_UNROLL_FACTOR
                   * sizeof(VECTYPE)) == 0
            && ((uintptr_t) buf) % sizeof(VECTYPE) == 0);
}
size_t buffer_find_nonzero_offset(const void *buf, size_t len);

/*
 * helper to parse debug environment variables
 */
int parse_debug_env(const char *name, int max, int initial);

const char *qemu_ether_ntoa(const MACAddr *mac);

#endif
Commit	Line	Data
9fb26641	1
04509ad9 EH	2	/* Common header file that is included by all of QEMU.
	3	*
	4	* This file is supposed to be included only by .c files. No header file should
	5	* depend on qemu-common.h, as this would easily lead to circular header
	6	* dependencies.
	7	*
	8	* If a header file uses a definition from qemu-common.h, that definition
	9	* must be moved to a separate header file, and the header that uses it
	10	* must include that header.
	11	*/
faf07963 PB	12	#ifndef QEMU_COMMON_H
	13	#define QEMU_COMMON_H
	14
1de7afc9	15	#include "qemu/compiler.h"
beb6f0de	16	#include "config-host.h"
1de7afc9	17	#include "qemu/typedefs.h"
beb6f0de	18
332ae28d PB	19	#if defined(__arm__) \|\| defined(__sparc__) \|\| defined(__mips__) \|\| defined(__hppa__) \|\| defined(__ia64__)
	20	#define WORDS_ALIGNED
	21	#endif
	22
082b5557	23	#define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
24ebf5f3	24
faf07963 PB	25	/* we put basic includes here to avoid repeating them in device drivers */
	26	#include <stdlib.h>
	27	#include <stdio.h>
	28	#include <stdarg.h>
11165820	29	#include <stdbool.h>
faf07963	30	#include <string.h>
c8906845	31	#include <strings.h>
faf07963 PB	32	#include <inttypes.h>
	33	#include <limits.h>
	34	#include <time.h>
	35	#include <ctype.h>
	36	#include <errno.h>
	37	#include <unistd.h>
	38	#include <fcntl.h>
	39	#include <sys/stat.h>
dcfd0865	40	#include <sys/time.h>
55616505	41	#include <assert.h>
86f69a92	42	#include <signal.h>
d63c9477	43	#include "glib-compat.h"
1ad9580b	44	#include "qemu/option.h"
faf07963	45
082b5557	46	#ifdef _WIN32
9c17d615	47	#include "sysemu/os-win32.h"
082b5557 BS	48	#endif
	49
	50	#ifdef CONFIG_POSIX
9c17d615	51	#include "sysemu/os-posix.h"
082b5557 BS	52	#endif
082b5557 BS	53
faf07963 PB	54	#ifndef O_LARGEFILE
	55	#define O_LARGEFILE 0
	56	#endif
	57	#ifndef O_BINARY
	58	#define O_BINARY 0
	59	#endif
0e74e66b JQ	60	#ifndef MAP_ANONYMOUS
	61	#define MAP_ANONYMOUS MAP_ANON
	62	#endif
faf07963 PB	63	#ifndef ENOMEDIUM
	64	#define ENOMEDIUM ENODEV
	65	#endif
4c955388	66	#if !defined(ENOTSUP)
2880bc32 JQ	67	#define ENOTSUP 4096
2880bc32 JQ	68	#endif
2084a8e3 PB	69	#if !defined(ECANCELED)
	70	#define ECANCELED 4097
	71	#endif
02582abd SW	72	#if !defined(EMEDIUMTYPE)
	73	#define EMEDIUMTYPE 4098
	74	#endif
3c9405a0 GH	75	#ifndef TIME_MAX
	76	#define TIME_MAX LONG_MAX
	77	#endif
faf07963	78
c0fd260e SW	79	/* HOST_LONG_BITS is the size of a native pointer in bits. */
	80	#if UINTPTR_MAX == UINT32_MAX
	81	# define HOST_LONG_BITS 32
	82	#elif UINTPTR_MAX == UINT64_MAX
	83	# define HOST_LONG_BITS 64
	84	#else
	85	# error Unknown pointer size
	86	#endif
	87
f868445a SW	88	typedef int (fprintf_function)(FILE f, const char *fmt, ...)
	89	GCC_FMT_ATTR(2, 3);
	90
faf07963	91	#ifdef _WIN32
faf07963	92	#define fsync _commit
371c6489 SW	93	#if !defined(lseek)
	94	# define lseek _lseeki64
	95	#endif
64b85a8f	96	int qemu_ftruncate64(int, int64_t);
371c6489 SW	97	#if !defined(ftruncate)
	98	# define ftruncate qemu_ftruncate64
	99	#endif
faf07963	100
faf07963 PB	101	static inline char realpath(const char path, char *resolved_path)
	102	{
	103	_fullpath(resolved_path, path, _MAX_PATH);
	104	return resolved_path;
	105	}
faf07963 PB	106	#endif
faf07963 PB	107
4603ea01 PD	108	void cpu_ticks_init(void);
4603ea01 PD	109
946fb27c	110	/* icount */
1ad9580b	111	void configure_icount(QemuOpts opts, Error *errp);
946fb27c	112	extern int use_icount;
a8bfac37	113	extern int icount_align_option;
27498bef ST	114	/* drift information for info jit command */
	115	extern int64_t max_delay;
	116	extern int64_t max_advance;
	117	void dump_drift_info(FILE *f, fprintf_function cpu_fprintf);
946fb27c	118
1de7afc9 PB	119	#include "qemu/osdep.h"
1de7afc9 PB	120	#include "qemu/bswap.h"
faf07963	121
9adea5f7 PB	122	/* FIXME: Remove NEED_CPU_H. */
9adea5f7 PB	123	#ifdef NEED_CPU_H
faf07963	124	#include "cpu.h"
faf07963 PB	125	#endif /* !defined(NEED_CPU_H) */
faf07963 PB	126
3bbbee18 AF	127	/* main function, renamed */
	128	#if defined(CONFIG_COCOA)
	129	int qemu_main(int argc, char argv, char envp);
	130	#endif
	131
f6503059 AZ	132	void qemu_get_timedate(struct tm *tm, int offset);
	133	int qemu_timedate_diff(struct tm *tm);
	134
c8057f95 PM	135	/**
	136	* is_help_option:
	137	* @s: string to test
	138	*
	139	* Check whether @s is one of the standard strings which indicate
	140	* that the user is asking for a list of the valid values for a
	141	* command option like -cpu or -M. The current accepted strings
	142	* are 'help' and '?'. '?' is deprecated (it is a shell wildcard
	143	* which makes it annoying to use in a reliable way) but provided
	144	* for backwards compatibility.
	145	*
	146	* Returns: true if @s is a request for a list.
	147	*/
	148	static inline bool is_help_option(const char *s)
	149	{
	150	return !strcmp(s, "?") \|\| !strcmp(s, "help");
	151	}
	152
faf07963 PB	153	/* cutils.c */
faf07963 PB	154	void pstrcpy(char buf, int buf_size, const char str);
2a025ae4	155	void strpadcpy(char buf, int buf_size, const char str, char pad);
faf07963 PB	156	char pstrcat(char buf, int buf_size, const char *s);
	157	int strstart(const char str, const char val, const char **ptr);
	158	int stristart(const char str, const char val, const char **ptr);
d43277c5	159	int qemu_strnlen(const char *s, int max_len);
a38ed811	160	char qemu_strsep(char input, const char delim);
faf07963	161	time_t mktimegm(struct tm *tm);
ad46db9a	162	int qemu_fls(int i);
6f1953c4	163	int qemu_fdatasync(int fd);
db1a4972	164	int fcntl_setfl(int fd, int flag);
443916d1	165	int qemu_parse_fd(const char *param);
d8427002	166
e3f9fe2d EH	167	int parse_uint(const char s, unsigned long long value, char **endptr,
	168	int base);
	169	int parse_uint_full(const char s, unsigned long long value, int base);
	170
d7142456 JS	171	/*
	172	* strtosz() suffixes used to specify the default treatment of an
	173	* argument passed to strtosz() without an explicit suffix.
	174	* These should be defined using upper case characters in the range
	175	* A-Z, as strtosz() will use qemu_toupper() on the given argument
	176	* prior to comparison.
	177	*/
5e00984a KW	178	#define STRTOSZ_DEFSUFFIX_EB 'E'
5e00984a KW	179	#define STRTOSZ_DEFSUFFIX_PB 'P'
d8427002 JS	180	#define STRTOSZ_DEFSUFFIX_TB 'T'
	181	#define STRTOSZ_DEFSUFFIX_GB 'G'
	182	#define STRTOSZ_DEFSUFFIX_MB 'M'
	183	#define STRTOSZ_DEFSUFFIX_KB 'K'
	184	#define STRTOSZ_DEFSUFFIX_B 'B'
70b4f4bb JS	185	int64_t strtosz(const char nptr, char *end);
70b4f4bb JS	186	int64_t strtosz_suffix(const char nptr, char *end, const char default_suffix);
a732e1ba JR	187	int64_t strtosz_suffix_unit(const char nptr, char *end,
a732e1ba JR	188	const char default_suffix, int64_t unit);
faf07963	189
44e3e053 WX	190	/* used to print char* safely */
	191	#define STR_OR_NULL(str) ((str) ? (str) : "null")
	192
f5bebbbb MA	193	/* id.c */
	194	bool id_wellformed(const char *id);
	195
37022086 BS	196	/* path.c */
	197	void init_paths(const char *prefix);
	198	const char path(const char pathname);
	199
cd390083 BS	200	#define qemu_isalnum(c) isalnum((unsigned char)(c))
	201	#define qemu_isalpha(c) isalpha((unsigned char)(c))
	202	#define qemu_iscntrl(c) iscntrl((unsigned char)(c))
	203	#define qemu_isdigit(c) isdigit((unsigned char)(c))
	204	#define qemu_isgraph(c) isgraph((unsigned char)(c))
	205	#define qemu_islower(c) islower((unsigned char)(c))
	206	#define qemu_isprint(c) isprint((unsigned char)(c))
	207	#define qemu_ispunct(c) ispunct((unsigned char)(c))
	208	#define qemu_isspace(c) isspace((unsigned char)(c))
	209	#define qemu_isupper(c) isupper((unsigned char)(c))
	210	#define qemu_isxdigit(c) isxdigit((unsigned char)(c))
	211	#define qemu_tolower(c) tolower((unsigned char)(c))
	212	#define qemu_toupper(c) toupper((unsigned char)(c))
	213	#define qemu_isascii(c) isascii((unsigned char)(c))
	214	#define qemu_toascii(c) toascii((unsigned char)(c))
	215
b152aa84	216	void qemu_oom_check(void ptr);
ca10f867	217
7c7c0629 JQ	218	ssize_t qemu_write_full(int fd, const void *buf, size_t count)
7c7c0629 JQ	219	QEMU_WARN_UNUSED_RESULT;
993295fe PB	220	ssize_t qemu_send_full(int fd, const void *buf, size_t count, int flags)
993295fe PB	221	QEMU_WARN_UNUSED_RESULT;
8c5135f9	222	ssize_t qemu_recv_full(int fd, void *buf, size_t count, int flags)
993295fe	223	QEMU_WARN_UNUSED_RESULT;
40ff6d7e KW	224
	225	#ifndef _WIN32
	226	int qemu_pipe(int pipefd[2]);
4efeabbb MT	227	/* like openpty() but also makes it raw; return master fd */
4efeabbb MT	228	int qemu_openpty_raw(int aslave, char pty_name);
40ff6d7e KW	229	#endif
40ff6d7e KW	230
00aa0040	231	#ifdef _WIN32
58455eb9 SW	232	/* MinGW needs type casts for the 'buf' and 'optval' arguments. */
	233	#define qemu_getsockopt(sockfd, level, optname, optval, optlen) \
	234	getsockopt(sockfd, level, optname, (void *)optval, optlen)
	235	#define qemu_setsockopt(sockfd, level, optname, optval, optlen) \
	236	setsockopt(sockfd, level, optname, (const void *)optval, optlen)
00aa0040	237	#define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
73062dfe SW	238	#define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
73062dfe SW	239	sendto(sockfd, (const void *)buf, len, flags, destaddr, addrlen)
00aa0040	240	#else
58455eb9 SW	241	#define qemu_getsockopt(sockfd, level, optname, optval, optlen) \
	242	getsockopt(sockfd, level, optname, optval, optlen)
	243	#define qemu_setsockopt(sockfd, level, optname, optval, optlen) \
	244	setsockopt(sockfd, level, optname, optval, optlen)
00aa0040	245	#define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags)
73062dfe SW	246	#define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
73062dfe SW	247	sendto(sockfd, buf, len, flags, destaddr, addrlen)
00aa0040 BS	248	#endif
00aa0040 BS	249
87ecb68b PB	250	/* Error handling. */
87ecb68b PB	251
e5924d89	252	void QEMU_NORETURN hw_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
87ecb68b	253
87ecb68b PB	254	struct ParallelIOArg {
	255	void *buffer;
	256	int count;
	257	};
	258
	259	typedef int (DMA_transfer_handler) (void opaque, int nchan, int pos, int size);
	260
186993ee MT	261	typedef uint64_t pcibus_t;
186993ee MT	262
679042f0 AP	263	typedef struct PCIHostDeviceAddress {
	264	unsigned int domain;
	265	unsigned int bus;
	266	unsigned int slot;
	267	unsigned int function;
	268	} PCIHostDeviceAddress;
	269
d5ab9713 JK	270	void tcg_exec_init(unsigned long tb_size);
	271	bool tcg_enabled(void);
	272
	273	void cpu_exec_init_all(void);
d2053c3c	274
b3c7724c	275	/* CPU save/load. */
8d0f2bae	276	#ifdef CPU_SAVE_VERSION
b3c7724c PB	277	void cpu_save(QEMUFile f, void opaque);
b3c7724c PB	278	int cpu_load(QEMUFile f, void opaque, int version_id);
8d0f2bae	279	#endif
b3c7724c	280
8edac960	281	/* Unblock cpu */
46d62fac	282	void qemu_cpu_kick_self(void);
8edac960	283
e82bcec2 MT	284	/* work queue */
	285	struct qemu_work_item {
	286	struct qemu_work_item *next;
	287	void (func)(void data);
	288	void *data;
	289	int done;
3c02270d	290	bool free;
e82bcec2 MT	291	};
e82bcec2 MT	292
8c5135f9 PB	293
8c5135f9 PB	294	/**
2fc8ae1d MT	295	* Sends a (part of) iovec down a socket, yielding when the socket is full, or
	296	* Receives data into a (part of) iovec from a socket,
	297	* yielding when there is no data in the socket.
	298	* The same interface as qemu_sendv_recvv(), with added yielding.
	299	* XXX should mark these as coroutine_fn
8c5135f9	300	*/
2fc8ae1d MT	301	ssize_t qemu_co_sendv_recvv(int sockfd, struct iovec *iov, unsigned iov_cnt,
	302	size_t offset, size_t bytes, bool do_send);
	303	#define qemu_co_recvv(sockfd, iov, iov_cnt, offset, bytes) \
	304	qemu_co_sendv_recvv(sockfd, iov, iov_cnt, offset, bytes, false)
	305	#define qemu_co_sendv(sockfd, iov, iov_cnt, offset, bytes) \
	306	qemu_co_sendv_recvv(sockfd, iov, iov_cnt, offset, bytes, true)
8c5135f9 PB	307
8c5135f9 PB	308	/**
2fc8ae1d	309	* The same as above, but with just a single buffer
8c5135f9	310	*/
2fc8ae1d MT	311	ssize_t qemu_co_send_recv(int sockfd, void *buf, size_t bytes, bool do_send);
	312	#define qemu_co_recv(sockfd, buf, bytes) \
	313	qemu_co_send_recv(sockfd, buf, bytes, false)
	314	#define qemu_co_send(sockfd, buf, bytes) \
	315	qemu_co_send_recv(sockfd, buf, bytes, true)
8c5135f9	316
44e3ee8a AL	317	typedef struct QEMUIOVector {
	318	struct iovec *iov;
	319	int niov;
	320	int nalloc;
249aa745	321	size_t size;
44e3ee8a AL	322	} QEMUIOVector;
	323
	324	void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
522584a5	325	void qemu_iovec_init_external(QEMUIOVector qiov, struct iovec iov, int niov);
44e3ee8a	326	void qemu_iovec_add(QEMUIOVector qiov, void base, size_t len);
1b093c48 MT	327	void qemu_iovec_concat(QEMUIOVector *dst,
1b093c48 MT	328	QEMUIOVector *src, size_t soffset, size_t sbytes);
519661ee PB	329	size_t qemu_iovec_concat_iov(QEMUIOVector *dst,
	330	struct iovec *src_iov, unsigned int src_cnt,
	331	size_t soffset, size_t sbytes);
43f35cb5	332	bool qemu_iovec_is_zero(QEMUIOVector *qiov);
44e3ee8a	333	void qemu_iovec_destroy(QEMUIOVector *qiov);
be959463	334	void qemu_iovec_reset(QEMUIOVector *qiov);
d5e6b161 MT	335	size_t qemu_iovec_to_buf(QEMUIOVector *qiov, size_t offset,
d5e6b161 MT	336	void *buf, size_t bytes);
03396148 MT	337	size_t qemu_iovec_from_buf(QEMUIOVector *qiov, size_t offset,
03396148 MT	338	const void *buf, size_t bytes);
3d9b4925 MT	339	size_t qemu_iovec_memset(QEMUIOVector *qiov, size_t offset,
3d9b4925 MT	340	int fillc, size_t bytes);
f70d7f7e BC	341	ssize_t qemu_iovec_compare(QEMUIOVector a, QEMUIOVector b);
f70d7f7e BC	342	void qemu_iovec_clone(QEMUIOVector dest, const QEMUIOVector src, void *buf);
58f423fb	343	void qemu_iovec_discard_back(QEMUIOVector *qiov, size_t bytes);
44e3ee8a	344
1a6d39fd SH	345	bool buffer_is_zero(const void *buf, size_t len);
1a6d39fd SH	346
6b837bc4 JS	347	void qemu_progress_init(int enabled, float min_skip);
6b837bc4 JS	348	void qemu_progress_end(void);
3bfe4dbf	349	void qemu_progress_print(float delta, int max);
31459f46	350	const char *qemu_get_vm_name(void);
6b837bc4	351
082b5557 BS	352	#define QEMU_FILE_TYPE_BIOS 0
	353	#define QEMU_FILE_TYPE_KEYMAP 1
	354	char qemu_find_file(int type, const char name);
	355
	356	/* OS specific functions */
	357	void os_setup_early_signal_handling(void);
10f5bff6	358	char *os_find_datadir(void);
082b5557	359	void os_parse_cmd_args(int index, const char *optarg);
082b5557	360
abd0c6bd PB	361	/* Convert a byte between binary and BCD. */
	362	static inline uint8_t to_bcd(uint8_t val)
	363	{
	364	return ((val / 10) << 4) \| (val % 10);
	365	}
	366
	367	static inline uint8_t from_bcd(uint8_t val)
	368	{
	369	return ((val >> 4) * 10) + (val & 0x0f);
	370	}
	371
338b922e	372	/* compute with 96 bit intermediate result: (ab)/c /
e1660dc5 FZ	373	#ifdef CONFIG_INT128
	374	static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
	375	{
	376	return (__int128_t)a * b / c;
	377	}
	378	#else
338b922e	379	static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
	380	{
	381	union {
	382	uint64_t ll;
	383	struct {
	384	#ifdef HOST_WORDS_BIGENDIAN
	385	uint32_t high, low;
	386	#else
	387	uint32_t low, high;
	388	#endif
	389	} l;
	390	} u, res;
	391	uint64_t rl, rh;
	392
	393	u.ll = a;
	394	rl = (uint64_t)u.l.low * (uint64_t)b;
	395	rh = (uint64_t)u.l.high * (uint64_t)b;
	396	rh += (rl >> 32);
	397	res.l.high = rh / c;
	398	res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
	399	return res.ll;
	400	}
e1660dc5	401	#endif
338b922e	402
3951690a SH	403	/* Round number down to multiple */
	404	#define QEMU_ALIGN_DOWN(n, m) ((n) / (m) * (m))
	405
	406	/* Round number up to multiple */
	407	#define QEMU_ALIGN_UP(n, m) QEMU_ALIGN_DOWN((n) + (m) - 1, (m))
	408
9fb26641 OW	409	static inline bool is_power_of_2(uint64_t value)
	410	{
	411	if (!value) {
	412	return 0;
	413	}
	414
	415	return !(value & (value - 1));
	416	}
	417
	418	/* round down to the nearest power of 2*/
	419	int64_t pow2floor(int64_t value);
	420
bb7443f6 RK	421	/* round up to the nearest power of 2 (0 if overflow) */
	422	uint64_t pow2ceil(uint64_t value);
	423
1de7afc9	424	#include "qemu/module.h"
0bfe3ca5	425
e6546bb9 OW	426	/*
	427	* Implementation of ULEB128 (http://en.wikipedia.org/wiki/LEB128)
	428	* Input is limited to 14-bit numbers
	429	*/
	430
	431	int uleb128_encode_small(uint8_t *out, uint32_t n);
	432	int uleb128_decode_small(const uint8_t in, uint32_t n);
	433
cb2744ea MA	434	/* unicode.c */
	435	int mod_utf8_codepoint(const char s, size_t n, char *end);
	436
6ff66f50 PC	437	/*
	438	* Hexdump a buffer to a file. An optional string prefix is added to every line
	439	*/
	440
3568ac2a	441	void qemu_hexdump(const char buf, FILE fp, const char *prefix, size_t size);
6ff66f50	442
c61ca00a PL	443	/* vector definitions */
	444	#ifdef __ALTIVEC__
	445	#include <altivec.h>
8593e050 PB	446	/* The altivec.h header says we're allowed to undef these for
	447	* C++ compatibility. Here we don't care about C++, but we
	448	* undef them anyway to avoid namespace pollution.
	449	*/
	450	#undef vector
	451	#undef pixel
	452	#undef bool
	453	#define VECTYPE __vector unsigned char
c61ca00a PL	454	#define SPLAT(p) vec_splat(vec_ld(0, p), 0)
	455	#define ALL_EQ(v1, v2) vec_all_eq(v1, v2)
	456	/* altivec.h may redefine the bool macro as vector type.
	457	* Reset it to POSIX semantics. */
c61ca00a PL	458	#define bool _Bool
	459	#elif defined __SSE2__
	460	#include <emmintrin.h>
	461	#define VECTYPE __m128i
	462	#define SPLAT(p) _mm_set1_epi8(*(p))
	463	#define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF)
	464	#else
	465	#define VECTYPE unsigned long
	466	#define SPLAT(p) ((p) (~0UL / 255))
	467	#define ALL_EQ(v1, v2) ((v1) == (v2))
	468	#endif
	469
41a259bd PL	470	#define BUFFER_FIND_NONZERO_OFFSET_UNROLL_FACTOR 8
	471	static inline bool
	472	can_use_buffer_find_nonzero_offset(const void *buf, size_t len)
	473	{
	474	return (len % (BUFFER_FIND_NONZERO_OFFSET_UNROLL_FACTOR
	475	* sizeof(VECTYPE)) == 0
	476	&& ((uintptr_t) buf) % sizeof(VECTYPE) == 0);
	477	}
	478	size_t buffer_find_nonzero_offset(const void *buf, size_t len);
	479
b16352ac AL	480	/*
	481	* helper to parse debug environment variables
	482	*/
	483	int parse_debug_env(const char *name, int max, int initial);
	484
4297c8ee AK	485	const char qemu_ether_ntoa(const MACAddr mac);
4297c8ee AK	486
faf07963	487	#endif