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#ifndef QEMU_H
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#define QEMU_H
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#include <signal.h>
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#include <string.h>
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#include "cpu.h"
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#undef DEBUG_REMAP
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#ifdef DEBUG_REMAP
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#include <stdlib.h>
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#endif /* DEBUG_REMAP */
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#include "qemu-types.h"
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enum BSDType {
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    target_freebsd,
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    target_netbsd,
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    target_openbsd,
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};
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extern enum BSDType bsd_type;
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#include "syscall_defs.h"
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#include "syscall.h"
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#include "target_signal.h"
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#include "gdbstub.h"
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#if defined(CONFIG_USE_NPTL)
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#define THREAD __thread
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#else
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#define THREAD
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#endif
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/* This struct is used to hold certain information about the image.
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 * Basically, it replicates in user space what would be certain
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 * task_struct fields in the kernel
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 */
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struct image_info {
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    abi_ulong load_addr;
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    abi_ulong start_code;
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    abi_ulong end_code;
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    abi_ulong start_data;
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    abi_ulong end_data;
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    abi_ulong start_brk;
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    abi_ulong brk;
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    abi_ulong start_mmap;
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    abi_ulong mmap;
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    abi_ulong rss;
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    abi_ulong start_stack;
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    abi_ulong entry;
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    abi_ulong code_offset;
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    abi_ulong data_offset;
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    char      **host_argv;
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    int       personality;
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};
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#define MAX_SIGQUEUE_SIZE 1024
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struct sigqueue {
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    struct sigqueue *next;
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    //target_siginfo_t info;
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};
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struct emulated_sigtable {
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    int pending; /* true if signal is pending */
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    struct sigqueue *first;
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    struct sigqueue info; /* in order to always have memory for the
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                             first signal, we put it here */
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};
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/* NOTE: we force a big alignment so that the stack stored after is
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   aligned too */
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typedef struct TaskState {
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    struct TaskState *next;
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    int used; /* non zero if used */
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    struct image_info *info;
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    struct emulated_sigtable sigtab[TARGET_NSIG];
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    struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
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    struct sigqueue *first_free; /* first free siginfo queue entry */
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    int signal_pending; /* non zero if a signal may be pending */
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    uint8_t stack[0];
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} __attribute__((aligned(16))) TaskState;
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void init_task_state(TaskState *ts);
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extern const char *qemu_uname_release;
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#if defined(CONFIG_USE_GUEST_BASE)
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extern unsigned long mmap_min_addr;
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#endif
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/* ??? See if we can avoid exposing so much of the loader internals.  */
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/*
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 * MAX_ARG_PAGES defines the number of pages allocated for arguments
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 * and envelope for the new program. 32 should suffice, this gives
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 * a maximum env+arg of 128kB w/4KB pages!
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 */
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#define MAX_ARG_PAGES 32
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/*
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 * This structure is used to hold the arguments that are
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 * used when loading binaries.
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 */
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struct linux_binprm {
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        char buf[128];
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        void *page[MAX_ARG_PAGES];
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        abi_ulong p;
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        int fd;
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        int e_uid, e_gid;
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        int argc, envc;
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        char **argv;
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        char **envp;
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        char * filename;        /* Name of binary */
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};
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void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
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abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
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                              abi_ulong stringp, int push_ptr);
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int loader_exec(const char * filename, char ** argv, char ** envp,
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             struct target_pt_regs * regs, struct image_info *infop);
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int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
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                    struct image_info * info);
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int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
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                    struct image_info * info);
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abi_long memcpy_to_target(abi_ulong dest, const void *src,
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                          unsigned long len);
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void target_set_brk(abi_ulong new_brk);
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abi_long do_brk(abi_ulong new_brk);
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void syscall_init(void);
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abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1,
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                            abi_long arg2, abi_long arg3, abi_long arg4,
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                            abi_long arg5, abi_long arg6, abi_long arg7,
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                            abi_long arg8);
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abi_long do_netbsd_syscall(void *cpu_env, int num, abi_long arg1,
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                           abi_long arg2, abi_long arg3, abi_long arg4,
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                           abi_long arg5, abi_long arg6);
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abi_long do_openbsd_syscall(void *cpu_env, int num, abi_long arg1,
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                            abi_long arg2, abi_long arg3, abi_long arg4,
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                            abi_long arg5, abi_long arg6);
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void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
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extern THREAD CPUState *thread_env;
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void cpu_loop(CPUState *env);
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char *target_strerror(int err);
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int get_osversion(void);
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void fork_start(void);
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void fork_end(int child);
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#include "qemu-log.h"
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/* strace.c */
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void
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print_freebsd_syscall(int num,
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                      abi_long arg1, abi_long arg2, abi_long arg3,
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                      abi_long arg4, abi_long arg5, abi_long arg6);
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void print_freebsd_syscall_ret(int num, abi_long ret);
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void
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print_netbsd_syscall(int num,
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                     abi_long arg1, abi_long arg2, abi_long arg3,
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                     abi_long arg4, abi_long arg5, abi_long arg6);
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void print_netbsd_syscall_ret(int num, abi_long ret);
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void
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print_openbsd_syscall(int num,
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                      abi_long arg1, abi_long arg2, abi_long arg3,
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                      abi_long arg4, abi_long arg5, abi_long arg6);
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void print_openbsd_syscall_ret(int num, abi_long ret);
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extern int do_strace;
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/* signal.c */
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void process_pending_signals(CPUState *cpu_env);
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void signal_init(void);
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//int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
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//void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
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//void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
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long do_sigreturn(CPUState *env);
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long do_rt_sigreturn(CPUState *env);
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abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
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/* mmap.c */
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int target_mprotect(abi_ulong start, abi_ulong len, int prot);
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abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
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                     int flags, int fd, abi_ulong offset);
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int target_munmap(abi_ulong start, abi_ulong len);
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abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
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                       abi_ulong new_size, unsigned long flags,
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                       abi_ulong new_addr);
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int target_msync(abi_ulong start, abi_ulong len, int flags);
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extern unsigned long last_brk;
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void mmap_lock(void);
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void mmap_unlock(void);
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void cpu_list_lock(void);
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void cpu_list_unlock(void);
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#if defined(CONFIG_USE_NPTL)
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void mmap_fork_start(void);
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void mmap_fork_end(int child);
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#endif
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/* main.c */
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extern unsigned long x86_stack_size;
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/* user access */
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#define VERIFY_READ 0
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#define VERIFY_WRITE 1 /* implies read access */
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static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
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{
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    return page_check_range((target_ulong)addr, size,
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                            (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
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}
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/* NOTE __get_user and __put_user use host pointers and don't check access. */
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/* These are usually used to access struct data members once the
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 * struct has been locked - usually with lock_user_struct().
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 */
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#define __put_user(x, hptr)\
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({\
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    int size = sizeof(*hptr);\
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    switch(size) {\
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    case 1:\
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        *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
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        break;\
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    case 2:\
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        *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\
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        break;\
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    case 4:\
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        *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\
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        break;\
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    case 8:\
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        *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
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        break;\
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    default:\
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        abort();\
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    }\
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    0;\
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})
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#define __get_user(x, hptr) \
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({\
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    int size = sizeof(*hptr);\
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    switch(size) {\
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    case 1:\
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        x = (typeof(*hptr))*(uint8_t *)(hptr);\
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        break;\
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    case 2:\
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        x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
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        break;\
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    case 4:\
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        x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
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        break;\
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    case 8:\
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        x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
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        break;\
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    default:\
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        /* avoid warning */\
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        x = 0;\
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        abort();\
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    }\
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    0;\
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})
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/* put_user()/get_user() take a guest address and check access */
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/* These are usually used to access an atomic data type, such as an int,
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 * that has been passed by address.  These internally perform locking
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 * and unlocking on the data type.
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 */
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#define put_user(x, gaddr, target_type)                                 \
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({                                                                      \
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    abi_ulong __gaddr = (gaddr);                                        \
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    target_type *__hptr;                                                \
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    abi_long __ret;                                                     \
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    if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
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        __ret = __put_user((x), __hptr);                                \
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        unlock_user(__hptr, __gaddr, sizeof(target_type));              \
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    } else                                                              \
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        __ret = -TARGET_EFAULT;                                         \
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    __ret;                                                              \
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})
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#define get_user(x, gaddr, target_type)                                 \
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({                                                                      \
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    abi_ulong __gaddr = (gaddr);                                        \
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    target_type *__hptr;                                                \
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    abi_long __ret;                                                     \
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    if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
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        __ret = __get_user((x), __hptr);                                \
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        unlock_user(__hptr, __gaddr, 0);                                \
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    } else {                                                            \
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        /* avoid warning */                                             \
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        (x) = 0;                                                        \
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        __ret = -TARGET_EFAULT;                                         \
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    }                                                                   \
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    __ret;                                                              \
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})
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#define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
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#define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
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#define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
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#define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
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#define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
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#define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
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#define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
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#define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
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#define put_user_u8(x, gaddr)  put_user((x), (gaddr), uint8_t)
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#define put_user_s8(x, gaddr)  put_user((x), (gaddr), int8_t)
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#define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
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#define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
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#define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
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#define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
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#define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
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#define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
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#define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
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#define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
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#define get_user_u8(x, gaddr)  get_user((x), (gaddr), uint8_t)
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#define get_user_s8(x, gaddr)  get_user((x), (gaddr), int8_t)
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/* copy_from_user() and copy_to_user() are usually used to copy data
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 * buffers between the target and host.  These internally perform
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 * locking/unlocking of the memory.
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 */
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abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
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abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
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/* Functions for accessing guest memory.  The tget and tput functions
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   read/write single values, byteswapping as neccessary.  The lock_user
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   gets a pointer to a contiguous area of guest memory, but does not perform
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   and byteswapping.  lock_user may return either a pointer to the guest
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   memory, or a temporary buffer.  */
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/* Lock an area of guest memory into the host.  If copy is true then the
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   host area will have the same contents as the guest.  */
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static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
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{
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    if (!access_ok(type, guest_addr, len))
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        return NULL;
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#ifdef DEBUG_REMAP
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    {
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        void *addr;
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        addr = malloc(len);
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        if (copy)
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            memcpy(addr, g2h(guest_addr), len);
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        else
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            memset(addr, 0, len);
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        return addr;
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    }
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#else
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    return g2h(guest_addr);
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#endif
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}
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/* Unlock an area of guest memory.  The first LEN bytes must be
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   flushed back to guest memory. host_ptr = NULL is explicitly
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   allowed and does nothing. */
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static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
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                               long len)
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{
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#ifdef DEBUG_REMAP
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    if (!host_ptr)
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        return;
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    if (host_ptr == g2h(guest_addr))
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        return;
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    if (len > 0)
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        memcpy(g2h(guest_addr), host_ptr, len);
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    free(host_ptr);
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#endif
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}
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/* Return the length of a string in target memory or -TARGET_EFAULT if
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   access error. */
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abi_long target_strlen(abi_ulong gaddr);
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/* Like lock_user but for null terminated strings.  */
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static inline void *lock_user_string(abi_ulong guest_addr)
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{
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    abi_long len;
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    len = target_strlen(guest_addr);
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    if (len < 0)
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        return NULL;
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    return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
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}
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/* Helper macros for locking/ulocking a target struct.  */
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#define lock_user_struct(type, host_ptr, guest_addr, copy)      \
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    (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
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#define unlock_user_struct(host_ptr, guest_addr, copy)          \
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    unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
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#if defined(CONFIG_USE_NPTL)
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#include <pthread.h>
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#endif
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#endif /* QEMU_H */