[qemu.git] / linux-user / qemu.h

#ifndef QEMU_H
#define QEMU_H

#include <signal.h>
#include <string.h>

#include "cpu.h"

#undef DEBUG_REMAP
#ifdef DEBUG_REMAP
#include <stdlib.h>
#endif /* DEBUG_REMAP */

#include "qemu-types.h"

#include "thunk.h"
#include "syscall_defs.h"
#include "syscall.h"
#include "target_signal.h"
#include "gdbstub.h"
#include "qemu-queue.h"

#if defined(CONFIG_USE_NPTL)
#define THREAD __thread
#else
#define THREAD
#endif

/* This struct is used to hold certain information about the image.
 * Basically, it replicates in user space what would be certain
 * task_struct fields in the kernel
 */
struct image_info {
        abi_ulong       load_addr;
        abi_ulong       start_code;
        abi_ulong       end_code;
        abi_ulong       start_data;
        abi_ulong       end_data;
        abi_ulong       start_brk;
        abi_ulong       brk;
        abi_ulong       start_mmap;
        abi_ulong       mmap;
        abi_ulong       rss;
        abi_ulong       start_stack;
        abi_ulong       entry;
        abi_ulong       code_offset;
        abi_ulong       data_offset;
        abi_ulong       saved_auxv;
        abi_ulong       arg_start;
        abi_ulong       arg_end;
        char            **host_argv;
	int		personality;
};

#ifdef TARGET_I386
/* Information about the current linux thread */
struct vm86_saved_state {
    uint32_t eax; /* return code */
    uint32_t ebx;
    uint32_t ecx;
    uint32_t edx;
    uint32_t esi;
    uint32_t edi;
    uint32_t ebp;
    uint32_t esp;
    uint32_t eflags;
    uint32_t eip;
    uint16_t cs, ss, ds, es, fs, gs;
};
#endif

#ifdef TARGET_ARM
/* FPU emulator */
#include "nwfpe/fpa11.h"
#endif

#define MAX_SIGQUEUE_SIZE 1024

struct sigqueue {
    struct sigqueue *next;
    target_siginfo_t info;
};

struct emulated_sigtable {
    int pending; /* true if signal is pending */
    struct sigqueue *first;
    struct sigqueue info; /* in order to always have memory for the
                             first signal, we put it here */
};

/* NOTE: we force a big alignment so that the stack stored after is
   aligned too */
typedef struct TaskState {
    pid_t ts_tid;     /* tid (or pid) of this task */
#ifdef TARGET_ARM
    /* FPA state */
    FPA11 fpa;
    int swi_errno;
#endif
#if defined(TARGET_I386) && !defined(TARGET_X86_64)
    abi_ulong target_v86;
    struct vm86_saved_state vm86_saved_regs;
    struct target_vm86plus_struct vm86plus;
    uint32_t v86flags;
    uint32_t v86mask;
#endif
#ifdef CONFIG_USE_NPTL
    abi_ulong child_tidptr;
#endif
#ifdef TARGET_M68K
    int sim_syscalls;
#endif
#if defined(TARGET_ARM) || defined(TARGET_M68K)
    /* Extra fields for semihosted binaries.  */
    uint32_t stack_base;
    uint32_t heap_base;
    uint32_t heap_limit;
#endif
    int used; /* non zero if used */
    struct image_info *info;
    struct linux_binprm *bprm;

    struct emulated_sigtable sigtab[TARGET_NSIG];
    struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
    struct sigqueue *first_free; /* first free siginfo queue entry */
    int signal_pending; /* non zero if a signal may be pending */

    uint8_t stack[0];
} __attribute__((aligned(16))) TaskState;

extern char *exec_path;
void init_task_state(TaskState *ts);
void task_settid(TaskState *);
void stop_all_tasks(void);
extern const char *qemu_uname_release;
extern unsigned long mmap_min_addr;

/* ??? See if we can avoid exposing so much of the loader internals.  */
/*
 * MAX_ARG_PAGES defines the number of pages allocated for arguments
 * and envelope for the new program. 32 should suffice, this gives
 * a maximum env+arg of 128kB w/4KB pages!
 */
#define MAX_ARG_PAGES 33

/*
 * This structure is used to hold the arguments that are
 * used when loading binaries.
 */
struct linux_binprm {
        char buf[128];
        void *page[MAX_ARG_PAGES];
        abi_ulong p;
	int fd;
        int e_uid, e_gid;
        int argc, envc;
        char **argv;
        char **envp;
        char * filename;        /* Name of binary */
        int (*core_dump)(int, const CPUState *); /* coredump routine */
};

void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
                              abi_ulong stringp, int push_ptr);
int loader_exec(const char * filename, char ** argv, char ** envp,
             struct target_pt_regs * regs, struct image_info *infop,
             struct linux_binprm *);

int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
                    struct image_info * info);
int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
                    struct image_info * info);
#ifdef TARGET_HAS_ELFLOAD32
int load_elf_binary_multi(struct linux_binprm *bprm,
                          struct target_pt_regs *regs,
                          struct image_info *info);
#endif

abi_long memcpy_to_target(abi_ulong dest, const void *src,
                          unsigned long len);
void target_set_brk(abi_ulong new_brk);
abi_long do_brk(abi_ulong new_brk);
void syscall_init(void);
abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
                    abi_long arg2, abi_long arg3, abi_long arg4,
                    abi_long arg5, abi_long arg6);
void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
extern THREAD CPUState *thread_env;
void cpu_loop(CPUState *env);
char *target_strerror(int err);
int get_osversion(void);
void fork_start(void);
void fork_end(int child);

#include "qemu-log.h"

/* strace.c */
void print_syscall(int num,
                   abi_long arg1, abi_long arg2, abi_long arg3,
                   abi_long arg4, abi_long arg5, abi_long arg6);
void print_syscall_ret(int num, abi_long arg1);
extern int do_strace;

/* signal.c */
void process_pending_signals(CPUState *cpu_env);
void signal_init(void);
int queue_signal(CPUState *env, int sig, target_siginfo_t *info);
void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
int target_to_host_signal(int sig);
int host_to_target_signal(int sig);
long do_sigreturn(CPUState *env);
long do_rt_sigreturn(CPUState *env);
abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);

#ifdef TARGET_I386
/* vm86.c */
void save_v86_state(CPUX86State *env);
void handle_vm86_trap(CPUX86State *env, int trapno);
void handle_vm86_fault(CPUX86State *env);
int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
#elif defined(TARGET_SPARC64)
void sparc64_set_context(CPUSPARCState *env);
void sparc64_get_context(CPUSPARCState *env);
#endif

/* mmap.c */
int target_mprotect(abi_ulong start, abi_ulong len, int prot);
abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
                     int flags, int fd, abi_ulong offset);
int target_munmap(abi_ulong start, abi_ulong len);
abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
                       abi_ulong new_size, unsigned long flags,
                       abi_ulong new_addr);
int target_msync(abi_ulong start, abi_ulong len, int flags);
extern unsigned long last_brk;
void mmap_lock(void);
void mmap_unlock(void);
abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
void cpu_list_lock(void);
void cpu_list_unlock(void);
#if defined(CONFIG_USE_NPTL)
void mmap_fork_start(void);
void mmap_fork_end(int child);
#endif

/* main.c */
extern unsigned long x86_stack_size;

/* user access */

#define VERIFY_READ 0
#define VERIFY_WRITE 1 /* implies read access */

static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
{
    return page_check_range((target_ulong)addr, size,
                            (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
}

/* NOTE __get_user and __put_user use host pointers and don't check access. */
/* These are usually used to access struct data members once the
 * struct has been locked - usually with lock_user_struct().
 */
#define __put_user(x, hptr)\
({\
    int size = sizeof(*hptr);\
    switch(size) {\
    case 1:\
        *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
        break;\
    case 2:\
        *(uint16_t *)(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\
        break;\
    case 4:\
        *(uint32_t *)(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\
        break;\
    case 8:\
        *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
        break;\
    default:\
        abort();\
    }\
    0;\
})

#define __get_user(x, hptr) \
({\
    int size = sizeof(*hptr);\
    switch(size) {\
    case 1:\
        x = (typeof(*hptr))*(uint8_t *)(hptr);\
        break;\
    case 2:\
        x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
        break;\
    case 4:\
        x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
        break;\
    case 8:\
        x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
        break;\
    default:\
        /* avoid warning */\
        x = 0;\
        abort();\
    }\
    0;\
})

/* put_user()/get_user() take a guest address and check access */
/* These are usually used to access an atomic data type, such as an int,
 * that has been passed by address.  These internally perform locking
 * and unlocking on the data type.
 */
#define put_user(x, gaddr, target_type)					\
({									\
    abi_ulong __gaddr = (gaddr);					\
    target_type *__hptr;						\
    abi_long __ret;							\
    if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
        __ret = __put_user((x), __hptr);				\
        unlock_user(__hptr, __gaddr, sizeof(target_type));		\
    } else								\
        __ret = -TARGET_EFAULT;						\
    __ret;								\
})

#define get_user(x, gaddr, target_type)					\
({									\
    abi_ulong __gaddr = (gaddr);					\
    target_type *__hptr;						\
    abi_long __ret;							\
    if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
        __ret = __get_user((x), __hptr);				\
        unlock_user(__hptr, __gaddr, 0);				\
    } else {								\
        /* avoid warning */						\
        (x) = 0;							\
        __ret = -TARGET_EFAULT;						\
    }									\
    __ret;								\
})

#define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
#define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
#define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
#define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
#define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
#define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
#define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
#define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
#define put_user_u8(x, gaddr)  put_user((x), (gaddr), uint8_t)
#define put_user_s8(x, gaddr)  put_user((x), (gaddr), int8_t)

#define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
#define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
#define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
#define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
#define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
#define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
#define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
#define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
#define get_user_u8(x, gaddr)  get_user((x), (gaddr), uint8_t)
#define get_user_s8(x, gaddr)  get_user((x), (gaddr), int8_t)

/* copy_from_user() and copy_to_user() are usually used to copy data
 * buffers between the target and host.  These internally perform
 * locking/unlocking of the memory.
 */
abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);

/* Functions for accessing guest memory.  The tget and tput functions
   read/write single values, byteswapping as neccessary.  The lock_user
   gets a pointer to a contiguous area of guest memory, but does not perform
   and byteswapping.  lock_user may return either a pointer to the guest
   memory, or a temporary buffer.  */

/* Lock an area of guest memory into the host.  If copy is true then the
   host area will have the same contents as the guest.  */
static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
{
    if (!access_ok(type, guest_addr, len))
        return NULL;
#ifdef DEBUG_REMAP
    {
        void *addr;
        addr = malloc(len);
        if (copy)
            memcpy(addr, g2h(guest_addr), len);
        else
            memset(addr, 0, len);
        return addr;
    }
#else
    return g2h(guest_addr);
#endif
}

/* Unlock an area of guest memory.  The first LEN bytes must be
   flushed back to guest memory. host_ptr = NULL is explicitly
   allowed and does nothing. */
static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
                               long len)
{

#ifdef DEBUG_REMAP
    if (!host_ptr)
        return;
    if (host_ptr == g2h(guest_addr))
        return;
    if (len > 0)
        memcpy(g2h(guest_addr), host_ptr, len);
    free(host_ptr);
#endif
}

/* Return the length of a string in target memory or -TARGET_EFAULT if
   access error. */
abi_long target_strlen(abi_ulong gaddr);

/* Like lock_user but for null terminated strings.  */
static inline void *lock_user_string(abi_ulong guest_addr)
{
    abi_long len;
    len = target_strlen(guest_addr);
    if (len < 0)
        return NULL;
    return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
}

/* Helper macros for locking/ulocking a target struct.  */
#define lock_user_struct(type, host_ptr, guest_addr, copy)	\
    (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
#define unlock_user_struct(host_ptr, guest_addr, copy)		\
    unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)

#if defined(CONFIG_USE_NPTL)
#include <pthread.h>
#endif

#endif /* QEMU_H */
Commit	Line	Data
e88de099 FB	1	#ifndef QEMU_H
e88de099 FB	2	#define QEMU_H
31e31b8a	3
9de5e440	4	#include <signal.h>
edf779ff	5	#include <string.h>
31e31b8a	6
6180a181	7	#include "cpu.h"
992f48a0	8
06177d36 AZ	9	#undef DEBUG_REMAP
	10	#ifdef DEBUG_REMAP
	11	#include <stdlib.h>
	12	#endif /* DEBUG_REMAP */
	13
1609cd44	14	#include "qemu-types.h"
992f48a0 BS	15
	16	#include "thunk.h"
	17	#include "syscall_defs.h"
6180a181	18	#include "syscall.h"
a04e134a	19	#include "target_signal.h"
1fddef4b	20	#include "gdbstub.h"
72cf2d4f	21	#include "qemu-queue.h"
66fb9763	22
2f7bb878	23	#if defined(CONFIG_USE_NPTL)
d5975363 PB	24	#define THREAD __thread
	25	#else
	26	#define THREAD
	27	#endif
	28
31e31b8a FB	29	/* This struct is used to hold certain information about the image.
	30	* Basically, it replicates in user space what would be certain
	31	* task_struct fields in the kernel
	32	*/
	33	struct image_info {
992f48a0 BS	34	abi_ulong load_addr;
	35	abi_ulong start_code;
	36	abi_ulong end_code;
	37	abi_ulong start_data;
	38	abi_ulong end_data;
	39	abi_ulong start_brk;
	40	abi_ulong brk;
	41	abi_ulong start_mmap;
	42	abi_ulong mmap;
	43	abi_ulong rss;
	44	abi_ulong start_stack;
	45	abi_ulong entry;
	46	abi_ulong code_offset;
	47	abi_ulong data_offset;
edf8e2af MW	48	abi_ulong saved_auxv;
	49	abi_ulong arg_start;
	50	abi_ulong arg_end;
38d0662a	51	char **host_argv;
31e31b8a FB	52	int personality;
	53	};
	54
b346ff46	55	#ifdef TARGET_I386
851e67a1 FB	56	/* Information about the current linux thread */
	57	struct vm86_saved_state {
	58	uint32_t eax; /* return code */
	59	uint32_t ebx;
	60	uint32_t ecx;
	61	uint32_t edx;
	62	uint32_t esi;
	63	uint32_t edi;
	64	uint32_t ebp;
	65	uint32_t esp;
	66	uint32_t eflags;
	67	uint32_t eip;
	68	uint16_t cs, ss, ds, es, fs, gs;
	69	};
b346ff46	70	#endif
851e67a1	71
28c4f361 FB	72	#ifdef TARGET_ARM
	73	/* FPU emulator */
	74	#include "nwfpe/fpa11.h"
28c4f361 FB	75	#endif
28c4f361 FB	76
624f7979 PB	77	#define MAX_SIGQUEUE_SIZE 1024
	78
	79	struct sigqueue {
	80	struct sigqueue *next;
c227f099	81	target_siginfo_t info;
624f7979 PB	82	};
	83
	84	struct emulated_sigtable {
	85	int pending; /* true if signal is pending */
	86	struct sigqueue *first;
	87	struct sigqueue info; /* in order to always have memory for the
	88	first signal, we put it here */
	89	};
	90
851e67a1 FB	91	/* NOTE: we force a big alignment so that the stack stored after is
	92	aligned too */
	93	typedef struct TaskState {
edf8e2af	94	pid_t ts_tid; /* tid (or pid) of this task */
28c4f361 FB	95	#ifdef TARGET_ARM
	96	/* FPA state */
	97	FPA11 fpa;
a4f81979	98	int swi_errno;
28c4f361	99	#endif
84409ddb	100	#if defined(TARGET_I386) && !defined(TARGET_X86_64)
992f48a0	101	abi_ulong target_v86;
851e67a1	102	struct vm86_saved_state vm86_saved_regs;
b333af06	103	struct target_vm86plus_struct vm86plus;
631271d7 FB	104	uint32_t v86flags;
631271d7 FB	105	uint32_t v86mask;
e6e5906b	106	#endif
2f7bb878	107	#ifdef CONFIG_USE_NPTL
c2764719 PB	108	abi_ulong child_tidptr;
c2764719 PB	109	#endif
e6e5906b PB	110	#ifdef TARGET_M68K
e6e5906b PB	111	int sim_syscalls;
a87295e8 PB	112	#endif
	113	#if defined(TARGET_ARM) \|\| defined(TARGET_M68K)
	114	/* Extra fields for semihosted binaries. */
	115	uint32_t stack_base;
	116	uint32_t heap_base;
	117	uint32_t heap_limit;
b346ff46	118	#endif
851e67a1	119	int used; /* non zero if used */
978efd6a	120	struct image_info *info;
edf8e2af	121	struct linux_binprm *bprm;
624f7979 PB	122
	123	struct emulated_sigtable sigtab[TARGET_NSIG];
	124	struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
	125	struct sigqueue first_free; / first free siginfo queue entry */
	126	int signal_pending; /* non zero if a signal may be pending */
	127
851e67a1 FB	128	uint8_t stack[0];
	129	} __attribute__((aligned(16))) TaskState;
	130
d088d664	131	extern char *exec_path;
624f7979	132	void init_task_state(TaskState *ts);
edf8e2af MW	133	void task_settid(TaskState *);
edf8e2af MW	134	void stop_all_tasks(void);
c5937220	135	extern const char *qemu_uname_release;
379f6698	136	extern unsigned long mmap_min_addr;
851e67a1	137
e5fe0c52 PB	138	/* ??? See if we can avoid exposing so much of the loader internals. */
	139	/*
	140	* MAX_ARG_PAGES defines the number of pages allocated for arguments
	141	* and envelope for the new program. 32 should suffice, this gives
	142	* a maximum env+arg of 128kB w/4KB pages!
	143	*/
fd4d81dd	144	#define MAX_ARG_PAGES 33
e5fe0c52 PB	145
e5fe0c52 PB	146	/*
5fafdf24	147	* This structure is used to hold the arguments that are
e5fe0c52 PB	148	* used when loading binaries.
	149	*/
	150	struct linux_binprm {
	151	char buf[128];
	152	void *page[MAX_ARG_PAGES];
992f48a0	153	abi_ulong p;
e5fe0c52 PB	154	int fd;
	155	int e_uid, e_gid;
	156	int argc, envc;
	157	char **argv;
	158	char **envp;
	159	char * filename; /* Name of binary */
edf8e2af	160	int (core_dump)(int, const CPUState ); /* coredump routine */
e5fe0c52 PB	161	};
	162
	163	void do_init_thread(struct target_pt_regs regs, struct image_info infop);
992f48a0 BS	164	abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
992f48a0 BS	165	abi_ulong stringp, int push_ptr);
5fafdf24	166	int loader_exec(const char * filename, char argv, char envp,
edf8e2af MW	167	struct target_pt_regs * regs, struct image_info *infop,
edf8e2af MW	168	struct linux_binprm *);
31e31b8a	169
e5fe0c52 PB	170	int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
	171	struct image_info * info);
	172	int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
	173	struct image_info * info);
cb33da57 BS	174	#ifdef TARGET_HAS_ELFLOAD32
	175	int load_elf_binary_multi(struct linux_binprm *bprm,
	176	struct target_pt_regs *regs,
	177	struct image_info *info);
	178	#endif
e5fe0c52	179
579a97f7 FB	180	abi_long memcpy_to_target(abi_ulong dest, const void *src,
579a97f7 FB	181	unsigned long len);
992f48a0 BS	182	void target_set_brk(abi_ulong new_brk);
992f48a0 BS	183	abi_long do_brk(abi_ulong new_brk);
31e31b8a	184	void syscall_init(void);
992f48a0 BS	185	abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
	186	abi_long arg2, abi_long arg3, abi_long arg4,
	187	abi_long arg5, abi_long arg6);
31e31b8a	188	void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
d5975363	189	extern THREAD CPUState *thread_env;
b346ff46	190	void cpu_loop(CPUState *env);
b92c47c1	191	char *target_strerror(int err);
a745ec6d	192	int get_osversion(void);
d5975363 PB	193	void fork_start(void);
d5975363 PB	194	void fork_end(int child);
6977fbfd	195
79383c9c	196	#include "qemu-log.h"
631271d7	197
b92c47c1 TS	198	/* strace.c */
b92c47c1 TS	199	void print_syscall(int num,
c16f9ed3 FB	200	abi_long arg1, abi_long arg2, abi_long arg3,
	201	abi_long arg4, abi_long arg5, abi_long arg6);
	202	void print_syscall_ret(int num, abi_long arg1);
b92c47c1 TS	203	extern int do_strace;
b92c47c1 TS	204
b346ff46	205	/* signal.c */
624f7979	206	void process_pending_signals(CPUState *cpu_env);
b346ff46	207	void signal_init(void);
c227f099 AL	208	int queue_signal(CPUState env, int sig, target_siginfo_t info);
	209	void host_to_target_siginfo(target_siginfo_t tinfo, const siginfo_t info);
	210	void target_to_host_siginfo(siginfo_t info, const target_siginfo_t tinfo);
4cb05961	211	int target_to_host_signal(int sig);
1d9d8b55	212	int host_to_target_signal(int sig);
b346ff46 FB	213	long do_sigreturn(CPUState *env);
b346ff46 FB	214	long do_rt_sigreturn(CPUState *env);
579a97f7	215	abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
b346ff46 FB	216
b346ff46 FB	217	#ifdef TARGET_I386
631271d7 FB	218	/* vm86.c */
631271d7 FB	219	void save_v86_state(CPUX86State *env);
447db213	220	void handle_vm86_trap(CPUX86State *env, int trapno);
631271d7	221	void handle_vm86_fault(CPUX86State *env);
992f48a0	222	int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
5bfb56b2 BS	223	#elif defined(TARGET_SPARC64)
	224	void sparc64_set_context(CPUSPARCState *env);
	225	void sparc64_get_context(CPUSPARCState *env);
b346ff46	226	#endif
631271d7	227
54936004	228	/* mmap.c */
992f48a0 BS	229	int target_mprotect(abi_ulong start, abi_ulong len, int prot);
	230	abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
	231	int flags, int fd, abi_ulong offset);
	232	int target_munmap(abi_ulong start, abi_ulong len);
	233	abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
	234	abi_ulong new_size, unsigned long flags,
	235	abi_ulong new_addr);
	236	int target_msync(abi_ulong start, abi_ulong len, int flags);
0776590d	237	extern unsigned long last_brk;
c8a706fe PB	238	void mmap_lock(void);
c8a706fe PB	239	void mmap_unlock(void);
9ad197d9	240	abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
c2764719 PB	241	void cpu_list_lock(void);
c2764719 PB	242	void cpu_list_unlock(void);
2f7bb878	243	#if defined(CONFIG_USE_NPTL)
d5975363 PB	244	void mmap_fork_start(void);
	245	void mmap_fork_end(int child);
	246	#endif
54936004	247
440c7e85 BS	248	/* main.c */
	249	extern unsigned long x86_stack_size;
	250
edf779ff FB	251	/* user access */
	252
	253	#define VERIFY_READ 0
579a97f7	254	#define VERIFY_WRITE 1 /* implies read access */
edf779ff	255
dae3270c FB	256	static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
	257	{
	258	return page_check_range((target_ulong)addr, size,
	259	(type == VERIFY_READ) ? PAGE_READ : (PAGE_READ \| PAGE_WRITE)) == 0;
	260	}
edf779ff	261
89343ecd	262	/* NOTE __get_user and __put_user use host pointers and don't check access. */
579a97f7 FB	263	/* These are usually used to access struct data members once the
	264	* struct has been locked - usually with lock_user_struct().
	265	*/
89343ecd	266	#define __put_user(x, hptr)\
edf779ff	267	({\
89343ecd	268	int size = sizeof(*hptr);\
edf779ff FB	269	switch(size) {\
edf779ff FB	270	case 1:\
2f619698	271	(uint8_t )(hptr) = (uint8_t)(typeof(*hptr))(x);\
edf779ff FB	272	break;\
edf779ff FB	273	case 2:\
425be425	274	(uint16_t )(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\
edf779ff FB	275	break;\
edf779ff FB	276	case 4:\
425be425	277	(uint32_t )(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\
edf779ff FB	278	break;\
edf779ff FB	279	case 8:\
89343ecd	280	(uint64_t )(hptr) = tswap64((typeof(*hptr))(x));\
edf779ff FB	281	break;\
	282	default:\
	283	abort();\
	284	}\
	285	0;\
	286	})
	287
89343ecd	288	#define __get_user(x, hptr) \
edf779ff	289	({\
89343ecd	290	int size = sizeof(*hptr);\
edf779ff FB	291	switch(size) {\
edf779ff FB	292	case 1:\
89343ecd	293	x = (typeof(hptr))(uint8_t *)(hptr);\
edf779ff FB	294	break;\
edf779ff FB	295	case 2:\
89343ecd	296	x = (typeof(hptr))tswap16((uint16_t *)(hptr));\
edf779ff FB	297	break;\
edf779ff FB	298	case 4:\
89343ecd	299	x = (typeof(hptr))tswap32((uint32_t *)(hptr));\
edf779ff FB	300	break;\
edf779ff FB	301	case 8:\
89343ecd	302	x = (typeof(hptr))tswap64((uint64_t *)(hptr));\
edf779ff FB	303	break;\
edf779ff FB	304	default:\
2f619698 FB	305	/* avoid warning */\
2f619698 FB	306	x = 0;\
edf779ff FB	307	abort();\
	308	}\
	309	0;\
	310	})
	311
579a97f7 FB	312	/* put_user()/get_user() take a guest address and check access */
	313	/* These are usually used to access an atomic data type, such as an int,
	314	* that has been passed by address. These internally perform locking
	315	* and unlocking on the data type.
	316	*/
	317	#define put_user(x, gaddr, target_type) \
	318	({ \
	319	abi_ulong __gaddr = (gaddr); \
	320	target_type *__hptr; \
	321	abi_long __ret; \
	322	if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
	323	__ret = __put_user((x), __hptr); \
	324	unlock_user(__hptr, __gaddr, sizeof(target_type)); \
	325	} else \
	326	__ret = -TARGET_EFAULT; \
	327	__ret; \
edf779ff FB	328	})
edf779ff FB	329
579a97f7 FB	330	#define get_user(x, gaddr, target_type) \
	331	({ \
	332	abi_ulong __gaddr = (gaddr); \
	333	target_type *__hptr; \
	334	abi_long __ret; \
	335	if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
	336	__ret = __get_user((x), __hptr); \
	337	unlock_user(__hptr, __gaddr, 0); \
2f619698 FB	338	} else { \
	339	/* avoid warning */ \
	340	(x) = 0; \
579a97f7	341	__ret = -TARGET_EFAULT; \
2f619698	342	} \
579a97f7	343	__ret; \
edf779ff FB	344	})
edf779ff FB	345
2f619698 FB	346	#define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
	347	#define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
	348	#define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
	349	#define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
	350	#define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
	351	#define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
	352	#define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
	353	#define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
	354	#define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
	355	#define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
	356
	357	#define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
	358	#define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
	359	#define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
	360	#define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
	361	#define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
	362	#define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
	363	#define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
	364	#define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
	365	#define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
	366	#define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
	367
579a97f7 FB	368	/* copy_from_user() and copy_to_user() are usually used to copy data
	369	* buffers between the target and host. These internally perform
	370	* locking/unlocking of the memory.
	371	*/
	372	abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
	373	abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
	374
53a5960a PB	375	/* Functions for accessing guest memory. The tget and tput functions
	376	read/write single values, byteswapping as neccessary. The lock_user
	377	gets a pointer to a contiguous area of guest memory, but does not perform
	378	and byteswapping. lock_user may return either a pointer to the guest
	379	memory, or a temporary buffer. */
	380
	381	/* Lock an area of guest memory into the host. If copy is true then the
	382	host area will have the same contents as the guest. */
579a97f7	383	static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
edf779ff	384	{
579a97f7 FB	385	if (!access_ok(type, guest_addr, len))
579a97f7 FB	386	return NULL;
53a5960a	387	#ifdef DEBUG_REMAP
579a97f7 FB	388	{
	389	void *addr;
	390	addr = malloc(len);
	391	if (copy)
	392	memcpy(addr, g2h(guest_addr), len);
	393	else
	394	memset(addr, 0, len);
	395	return addr;
	396	}
53a5960a PB	397	#else
	398	return g2h(guest_addr);
	399	#endif
edf779ff FB	400	}
edf779ff FB	401
579a97f7	402	/* Unlock an area of guest memory. The first LEN bytes must be
1235fc06	403	flushed back to guest memory. host_ptr = NULL is explicitly
579a97f7 FB	404	allowed and does nothing. */
579a97f7 FB	405	static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
992f48a0	406	long len)
edf779ff	407	{
579a97f7	408
53a5960a	409	#ifdef DEBUG_REMAP
579a97f7 FB	410	if (!host_ptr)
	411	return;
	412	if (host_ptr == g2h(guest_addr))
53a5960a PB	413	return;
53a5960a PB	414	if (len > 0)
06177d36	415	memcpy(g2h(guest_addr), host_ptr, len);
579a97f7	416	free(host_ptr);
53a5960a	417	#endif
edf779ff FB	418	}
edf779ff FB	419
579a97f7 FB	420	/* Return the length of a string in target memory or -TARGET_EFAULT if
	421	access error. */
	422	abi_long target_strlen(abi_ulong gaddr);
53a5960a PB	423
53a5960a PB	424	/* Like lock_user but for null terminated strings. */
992f48a0	425	static inline void *lock_user_string(abi_ulong guest_addr)
53a5960a	426	{
579a97f7 FB	427	abi_long len;
	428	len = target_strlen(guest_addr);
	429	if (len < 0)
	430	return NULL;
	431	return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
edf779ff FB	432	}
edf779ff FB	433
53a5960a	434	/* Helper macros for locking/ulocking a target struct. */
579a97f7 FB	435	#define lock_user_struct(type, host_ptr, guest_addr, copy) \
	436	(host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
	437	#define unlock_user_struct(host_ptr, guest_addr, copy) \
53a5960a PB	438	unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
53a5960a PB	439
2f7bb878	440	#if defined(CONFIG_USE_NPTL)
c8a706fe PB	441	#include <pthread.h>
	442	#endif
	443
e88de099	444	#endif /* QEMU_H */