osdep.h

   1 #ifndef QEMU_OSDEP_H
   2 #define QEMU_OSDEP_H
   3
   4 #include <stdarg.h>
   5
   6 int qemu_vsnprintf(char *buf, int buflen, const char *fmt, va_list args);
   7 void qemu_vprintf(const char *fmt, va_list ap);
   8 void qemu_printf(const char *fmt, ...);
   9
  10 void *qemu_malloc(size_t size);
  11 void *qemu_mallocz(size_t size);
  12 void qemu_free(void *ptr);
  13 char *qemu_strdup(const char *str);
  14
  15 void *qemu_vmalloc(size_t size);
  16 void qemu_vfree(void *ptr);
  17
  18 void *get_mmap_addr(unsigned long size);
  19
  20 /* specific kludges for OS compatibility (should be moved elsewhere) */
  21 #if defined(__i386__) && !defined(CONFIG_SOFTMMU) && !defined(CONFIG_USER_ONLY)
  22
  23 /* disabled pthread version of longjmp which prevent us from using an
  24    alternative signal stack */
  25 extern void __longjmp(jmp_buf env, int val);
  26 #define longjmp __longjmp
  27
  28 #include <signal.h>
  29
  30 /* NOTE: it works only because the glibc sigset_t is >= kernel sigset_t */
  31 struct qemu_sigaction {
  32     union {
  33         void (*_sa_handler)(int);
  34         void (*_sa_sigaction)(int, struct siginfo *, void *);
  35     } _u;
  36     unsigned long sa_flags;
  37     void (*sa_restorer)(void);
  38     sigset_t sa_mask;           /* mask last for extensibility */
  39 };
  40
  41 int qemu_sigaction(int signum, const struct qemu_sigaction *act,
  42                    struct qemu_sigaction *oldact);
  43
  44 #undef sigaction
  45 #undef sa_handler
  46 #undef sa_sigaction
  47 #define sigaction qemu_sigaction
  48 #define sa_handler      _u._sa_handler
  49 #define sa_sigaction    _u._sa_sigaction
  50
  51 #endif
  52
  53 #endif