linux-user/qemu.h

   1 #ifndef GEMU_H
   2 #define GEMU_H
   3
   4 #include "thunk.h"
   5
   6 #include <signal.h>
   7 #include "syscall_defs.h"
   8
   9 #include "cpu.h"
  10 #include "syscall.h"
  11
  12 /* This struct is used to hold certain information about the image.
  13  * Basically, it replicates in user space what would be certain
  14  * task_struct fields in the kernel
  15  */
  16 struct image_info {
  17         unsigned long   start_code;
  18         unsigned long   end_code;
  19         unsigned long   end_data;
  20         unsigned long   start_brk;
  21         unsigned long   brk;
  22         unsigned long   start_mmap;
  23         unsigned long   mmap;
  24         unsigned long   rss;
  25         unsigned long   start_stack;
  26         unsigned long   arg_start;
  27         unsigned long   arg_end;
  28         unsigned long   env_start;
  29         unsigned long   env_end;
  30         unsigned long   entry;
  31         int             personality;
  32 };
  33
  34 #ifdef TARGET_I386
  35 /* Information about the current linux thread */
  36 struct vm86_saved_state {
  37     uint32_t eax; /* return code */
  38     uint32_t ebx;
  39     uint32_t ecx;
  40     uint32_t edx;
  41     uint32_t esi;
  42     uint32_t edi;
  43     uint32_t ebp;
  44     uint32_t esp;
  45     uint32_t eflags;
  46     uint32_t eip;
  47     uint16_t cs, ss, ds, es, fs, gs;
  48 };
  49 #endif
  50
  51 /* NOTE: we force a big alignment so that the stack stored after is
  52    aligned too */
  53 typedef struct TaskState {
  54     struct TaskState *next;
  55 #ifdef TARGET_I386
  56     struct target_vm86plus_struct *target_v86;
  57     struct vm86_saved_state vm86_saved_regs;
  58     struct target_vm86plus_struct vm86plus;
  59     uint32_t v86flags;
  60     uint32_t v86mask;
  61 #endif
  62     int used; /* non zero if used */
  63     uint8_t stack[0];
  64 } __attribute__((aligned(16))) TaskState;
  65
  66 extern TaskState *first_task_state;
  67
  68 int elf_exec(const char * filename, char ** argv, char ** envp,
  69              struct target_pt_regs * regs, struct image_info *infop);
  70
  71 void target_set_brk(char *new_brk);
  72 void syscall_init(void);
  73 long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
  74                 long arg4, long arg5, long arg6);
  75 void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
  76 extern CPUState *global_env;
  77 void cpu_loop(CPUState *env);
  78 void init_paths(const char *prefix);
  79 const char *path(const char *pathname);
  80
  81 extern int loglevel;
  82 extern FILE *logfile;
  83
  84 /* signal.c */
  85 void process_pending_signals(void *cpu_env);
  86 void signal_init(void);
  87 int queue_signal(int sig, target_siginfo_t *info);
  88 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
  89 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
  90 long do_sigreturn(CPUState *env);
  91 long do_rt_sigreturn(CPUState *env);
  92
  93 #ifdef TARGET_I386
  94 /* vm86.c */
  95 void save_v86_state(CPUX86State *env);
  96 void handle_vm86_trap(CPUX86State *env, int trapno);
  97 void handle_vm86_fault(CPUX86State *env);
  98 int do_vm86(CPUX86State *env, long subfunction,
  99             struct target_vm86plus_struct * target_v86);
 100 #endif
 101
 102 /* mmap.c */
 103 int target_mprotect(unsigned long start, unsigned long len, int prot);
 104 long target_mmap(unsigned long start, unsigned long len, int prot,
 105                  int flags, int fd, unsigned long offset);
 106 int target_munmap(unsigned long start, unsigned long len);
 107 long target_mremap(unsigned long old_addr, unsigned long old_size,
 108                    unsigned long new_size, unsigned long flags,
 109                    unsigned long new_addr);
 110 int target_msync(unsigned long start, unsigned long len, int flags);
 111
 112 #endif