include/qemu-common.h

   1
   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  */
  12 #ifndef QEMU_COMMON_H
  13 #define QEMU_COMMON_H
  14
  15 #include "qemu/fprintf-fn.h"
  16
  17 #define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
  18
  19 /* Copyright string for -version arguments, About dialogs, etc */
  20 #define QEMU_COPYRIGHT "Copyright (c) 2003-2017 " \
  21     "Fabrice Bellard and the QEMU Project developers"
  22
  23 /* Bug reporting information for --help arguments, About dialogs, etc */
  24 #define QEMU_HELP_BOTTOM \
  25     "See <https://qemu.org/contribute/report-a-bug> for how to report bugs.\n" \
  26     "More information on the QEMU project at <https://qemu.org>."
  27
  28 #define KiB     1024
  29 #define MiB     (KiB * KiB)
  30
  31 /* Trace unassigned memory or i/o accesses. */
  32 extern bool trace_unassigned;
  33
  34 /* main function, renamed */
  35 #if defined(CONFIG_COCOA)
  36 int qemu_main(int argc, char **argv, char **envp);
  37 #endif
  38
  39 void qemu_get_timedate(struct tm *tm, int offset);
  40 int qemu_timedate_diff(struct tm *tm);
  41
  42 #define qemu_isalnum(c)         isalnum((unsigned char)(c))
  43 #define qemu_isalpha(c)         isalpha((unsigned char)(c))
  44 #define qemu_iscntrl(c)         iscntrl((unsigned char)(c))
  45 #define qemu_isdigit(c)         isdigit((unsigned char)(c))
  46 #define qemu_isgraph(c)         isgraph((unsigned char)(c))
  47 #define qemu_islower(c)         islower((unsigned char)(c))
  48 #define qemu_isprint(c)         isprint((unsigned char)(c))
  49 #define qemu_ispunct(c)         ispunct((unsigned char)(c))
  50 #define qemu_isspace(c)         isspace((unsigned char)(c))
  51 #define qemu_isupper(c)         isupper((unsigned char)(c))
  52 #define qemu_isxdigit(c)        isxdigit((unsigned char)(c))
  53 #define qemu_tolower(c)         tolower((unsigned char)(c))
  54 #define qemu_toupper(c)         toupper((unsigned char)(c))
  55 #define qemu_isascii(c)         isascii((unsigned char)(c))
  56 #define qemu_toascii(c)         toascii((unsigned char)(c))
  57
  58 void *qemu_oom_check(void *ptr);
  59
  60 ssize_t qemu_write_full(int fd, const void *buf, size_t count)
  61     QEMU_WARN_UNUSED_RESULT;
  62
  63 #ifndef _WIN32
  64 int qemu_pipe(int pipefd[2]);
  65 /* like openpty() but also makes it raw; return master fd */
  66 int qemu_openpty_raw(int *aslave, char *pty_name);
  67 #endif
  68
  69 #ifdef _WIN32
  70 /* MinGW needs type casts for the 'buf' and 'optval' arguments. */
  71 #define qemu_getsockopt(sockfd, level, optname, optval, optlen) \
  72     getsockopt(sockfd, level, optname, (void *)optval, optlen)
  73 #define qemu_setsockopt(sockfd, level, optname, optval, optlen) \
  74     setsockopt(sockfd, level, optname, (const void *)optval, optlen)
  75 #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
  76 #define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
  77     sendto(sockfd, (const void *)buf, len, flags, destaddr, addrlen)
  78 #else
  79 #define qemu_getsockopt(sockfd, level, optname, optval, optlen) \
  80     getsockopt(sockfd, level, optname, optval, optlen)
  81 #define qemu_setsockopt(sockfd, level, optname, optval, optlen) \
  82     setsockopt(sockfd, level, optname, optval, optlen)
  83 #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags)
  84 #define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
  85     sendto(sockfd, buf, len, flags, destaddr, addrlen)
  86 #endif
  87
  88 extern bool tcg_allowed;
  89 void tcg_exec_init(uintptr_t tb_size);
  90 #ifdef CONFIG_TCG
  91 #define tcg_enabled() (tcg_allowed)
  92 #else
  93 #define tcg_enabled() 0
  94 #endif
  95
  96 void cpu_exec_init_all(void);
  97 void cpu_exec_step_atomic(CPUState *cpu);
  98
  99 /**
 100  * set_preferred_target_page_bits:
 101  * @bits: number of bits needed to represent an address within the page
 102  *
 103  * Set the preferred target page size (the actual target page
 104  * size may be smaller than any given CPU's preference).
 105  * Returns true on success, false on failure (which can only happen
 106  * if this is called after the system has already finalized its
 107  * choice of page size and the requested page size is smaller than that).
 108  */
 109 bool set_preferred_target_page_bits(int bits);
 110
 111 /**
 112  * Sends a (part of) iovec down a socket, yielding when the socket is full, or
 113  * Receives data into a (part of) iovec from a socket,
 114  * yielding when there is no data in the socket.
 115  * The same interface as qemu_sendv_recvv(), with added yielding.
 116  * XXX should mark these as coroutine_fn
 117  */
 118 ssize_t qemu_co_sendv_recvv(int sockfd, struct iovec *iov, unsigned iov_cnt,
 119                             size_t offset, size_t bytes, bool do_send);
 120 #define qemu_co_recvv(sockfd, iov, iov_cnt, offset, bytes) \
 121   qemu_co_sendv_recvv(sockfd, iov, iov_cnt, offset, bytes, false)
 122 #define qemu_co_sendv(sockfd, iov, iov_cnt, offset, bytes) \
 123   qemu_co_sendv_recvv(sockfd, iov, iov_cnt, offset, bytes, true)
 124
 125 /**
 126  * The same as above, but with just a single buffer
 127  */
 128 ssize_t qemu_co_send_recv(int sockfd, void *buf, size_t bytes, bool do_send);
 129 #define qemu_co_recv(sockfd, buf, bytes) \
 130   qemu_co_send_recv(sockfd, buf, bytes, false)
 131 #define qemu_co_send(sockfd, buf, bytes) \
 132   qemu_co_send_recv(sockfd, buf, bytes, true)
 133
 134 void qemu_progress_init(int enabled, float min_skip);
 135 void qemu_progress_end(void);
 136 void qemu_progress_print(float delta, int max);
 137 const char *qemu_get_vm_name(void);
 138
 139 #define QEMU_FILE_TYPE_BIOS   0
 140 #define QEMU_FILE_TYPE_KEYMAP 1
 141 char *qemu_find_file(int type, const char *name);
 142
 143 /* OS specific functions */
 144 void os_setup_early_signal_handling(void);
 145 char *os_find_datadir(void);
 146 void os_parse_cmd_args(int index, const char *optarg);
 147
 148 #include "qemu/module.h"
 149
 150 /*
 151  * Hexdump a buffer to a file. An optional string prefix is added to every line
 152  */
 153
 154 void qemu_hexdump(const char *buf, FILE *fp, const char *prefix, size_t size);
 155
 156 /*
 157  * helper to parse debug environment variables
 158  */
 159 int parse_debug_env(const char *name, int max, int initial);
 160
 161 const char *qemu_ether_ntoa(const MACAddr *mac);
 162 char *size_to_str(uint64_t val);
 163 void page_size_init(void);
 164
 165 /* returns non-zero if dump is in progress, otherwise zero is
 166  * returned. */
 167 bool dump_in_progress(void);
 168
 169 #endif