| |
| /* 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/osdep.h" |
| #include "qemu/typedefs.h" |
| #include "qemu/fprintf-fn.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) |
| |
| #include "glib-compat.h" |
| #include "qemu/option.h" |
| |
| /* 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 |
| |
| 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/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"); |
| } |
| |
| /* util/cutils.c */ |
| /** |
| * pstrcpy: |
| * @buf: buffer to copy string into |
| * @buf_size: size of @buf in bytes |
| * @str: string to copy |
| * |
| * Copy @str into @buf, including the trailing NUL, but do not |
| * write more than @buf_size bytes. The resulting buffer is |
| * always NUL terminated (even if the source string was too long). |
| * If @buf_size is zero or negative then no bytes are copied. |
| * |
| * This function is similar to strncpy(), but avoids two of that |
| * function's problems: |
| * * if @str fits in the buffer, pstrcpy() does not zero-fill the |
| * remaining space at the end of @buf |
| * * if @str is too long, pstrcpy() will copy the first @buf_size-1 |
| * bytes and then add a NUL |
| */ |
| void pstrcpy(char *buf, int buf_size, const char *str); |
| /** |
| * strpadcpy: |
| * @buf: buffer to copy string into |
| * @buf_size: size of @buf in bytes |
| * @str: string to copy |
| * @pad: character to pad the remainder of @buf with |
| * |
| * Copy @str into @buf (but *not* its trailing NUL!), and then pad the |
| * rest of the buffer with the @pad character. If @str is too large |
| * for the buffer then it is truncated, so that @buf contains the |
| * first @buf_size characters of @str, with no terminator. |
| */ |
| void strpadcpy(char *buf, int buf_size, const char *str, char pad); |
| /** |
| * pstrcat: |
| * @buf: buffer containing existing string |
| * @buf_size: size of @buf in bytes |
| * @s: string to concatenate to @buf |
| * |
| * Append a copy of @s to the string already in @buf, but do not |
| * allow the buffer to overflow. If the existing contents of @buf |
| * plus @str would total more than @buf_size bytes, then write |
| * as much of @str as will fit followed by a NUL terminator. |
| * |
| * @buf must already contain a NUL-terminated string, or the |
| * behaviour is undefined. |
| * |
| * Returns: @buf. |
| */ |
| char *pstrcat(char *buf, int buf_size, const char *s); |
| /** |
| * strstart: |
| * @str: string to test |
| * @val: prefix string to look for |
| * @ptr: NULL, or pointer to be written to indicate start of |
| * the remainder of the string |
| * |
| * Test whether @str starts with the prefix @val. |
| * If it does (including the degenerate case where @str and @val |
| * are equal) then return true. If @ptr is not NULL then a |
| * pointer to the first character following the prefix is written |
| * to it. If @val is not a prefix of @str then return false (and |
| * @ptr is not written to). |
| * |
| * Returns: true if @str starts with prefix @val, false otherwise. |
| */ |
| int strstart(const char *str, const char *val, const char **ptr); |
| /** |
| * stristart: |
| * @str: string to test |
| * @val: prefix string to look for |
| * @ptr: NULL, or pointer to be written to indicate start of |
| * the remainder of the string |
| * |
| * Test whether @str starts with the case-insensitive prefix @val. |
| * This function behaves identically to strstart(), except that the |
| * comparison is made after calling qemu_toupper() on each pair of |
| * characters. |
| * |
| * Returns: true if @str starts with case-insensitive prefix @val, |
| * false otherwise. |
| */ |
| int stristart(const char *str, const char *val, const char **ptr); |
| /** |
| * qemu_strnlen: |
| * @s: string |
| * @max_len: maximum number of bytes in @s to scan |
| * |
| * Return the length of the string @s, like strlen(), but do not |
| * examine more than @max_len bytes of the memory pointed to by @s. |
| * If no NUL terminator is found within @max_len bytes, then return |
| * @max_len instead. |
| * |
| * This function has the same behaviour as the POSIX strnlen() |
| * function. |
| * |
| * Returns: length of @s in bytes, or @max_len, whichever is smaller. |
| */ |
| int qemu_strnlen(const char *s, int max_len); |
| /** |
| * qemu_strsep: |
| * @input: pointer to string to parse |
| * @delim: string containing delimiter characters to search for |
| * |
| * Locate the first occurrence of any character in @delim within |
| * the string referenced by @input, and replace it with a NUL. |
| * The location of the next character after the delimiter character |
| * is stored into @input. |
| * If the end of the string was reached without finding a delimiter |
| * character, then NULL is stored into @input. |
| * If @input points to a NULL pointer on entry, return NULL. |
| * The return value is always the original value of *@input (and |
| * so now points to a NUL-terminated string corresponding to the |
| * part of the input up to the first delimiter). |
| * |
| * This function has the same behaviour as the BSD strsep() function. |
| * |
| * Returns: the pointer originally in @input. |
| */ |
| 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); |
| #define K_BYTE (1ULL << 10) |
| #define M_BYTE (1ULL << 20) |
| #define G_BYTE (1ULL << 30) |
| #define T_BYTE (1ULL << 40) |
| #define P_BYTE (1ULL << 50) |
| #define E_BYTE (1ULL << 60) |
| |
| /* 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; |
| |
| #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); |
| } |
| |
| /* 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) |
| #define VEC_OR(v1, v2) ((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) |
| #define VEC_OR(v1, v2) (_mm_or_si128(v1, v2)) |
| #else |
| #define VECTYPE unsigned long |
| #define SPLAT(p) (*(p) * (~0UL / 255)) |
| #define ALL_EQ(v1, v2) ((v1) == (v2)) |
| #define VEC_OR(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 |