[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;
#if defined(CONFIG_USE_GUEST_BASE)
extern unsigned long mmap_min_addr;
#endif

/* ??? 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 PB	136	#if defined(CONFIG_USE_GUEST_BASE)
	137	extern unsigned long mmap_min_addr;
	138	#endif
851e67a1	139
e5fe0c52 PB	140	/* ??? See if we can avoid exposing so much of the loader internals. */
	141	/*
	142	* MAX_ARG_PAGES defines the number of pages allocated for arguments
	143	* and envelope for the new program. 32 should suffice, this gives
	144	* a maximum env+arg of 128kB w/4KB pages!
	145	*/
fd4d81dd	146	#define MAX_ARG_PAGES 33
e5fe0c52 PB	147
e5fe0c52 PB	148	/*
5fafdf24	149	* This structure is used to hold the arguments that are
e5fe0c52 PB	150	* used when loading binaries.
	151	*/
	152	struct linux_binprm {
	153	char buf[128];
	154	void *page[MAX_ARG_PAGES];
992f48a0	155	abi_ulong p;
e5fe0c52 PB	156	int fd;
	157	int e_uid, e_gid;
	158	int argc, envc;
	159	char **argv;
	160	char **envp;
	161	char * filename; /* Name of binary */
edf8e2af	162	int (core_dump)(int, const CPUState ); /* coredump routine */
e5fe0c52 PB	163	};
	164
	165	void do_init_thread(struct target_pt_regs regs, struct image_info infop);
992f48a0 BS	166	abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
992f48a0 BS	167	abi_ulong stringp, int push_ptr);
5fafdf24	168	int loader_exec(const char * filename, char argv, char envp,
edf8e2af MW	169	struct target_pt_regs * regs, struct image_info *infop,
edf8e2af MW	170	struct linux_binprm *);
31e31b8a	171
e5fe0c52 PB	172	int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
	173	struct image_info * info);
	174	int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
	175	struct image_info * info);
cb33da57 BS	176	#ifdef TARGET_HAS_ELFLOAD32
	177	int load_elf_binary_multi(struct linux_binprm *bprm,
	178	struct target_pt_regs *regs,
	179	struct image_info *info);
	180	#endif
e5fe0c52	181
579a97f7 FB	182	abi_long memcpy_to_target(abi_ulong dest, const void *src,
579a97f7 FB	183	unsigned long len);
992f48a0 BS	184	void target_set_brk(abi_ulong new_brk);
992f48a0 BS	185	abi_long do_brk(abi_ulong new_brk);
31e31b8a	186	void syscall_init(void);
992f48a0 BS	187	abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
	188	abi_long arg2, abi_long arg3, abi_long arg4,
	189	abi_long arg5, abi_long arg6);
31e31b8a	190	void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
d5975363	191	extern THREAD CPUState *thread_env;
b346ff46	192	void cpu_loop(CPUState *env);
b92c47c1	193	char *target_strerror(int err);
a745ec6d	194	int get_osversion(void);
d5975363 PB	195	void fork_start(void);
d5975363 PB	196	void fork_end(int child);
6977fbfd	197
79383c9c	198	#include "qemu-log.h"
631271d7	199
b92c47c1 TS	200	/* strace.c */
b92c47c1 TS	201	void print_syscall(int num,
c16f9ed3 FB	202	abi_long arg1, abi_long arg2, abi_long arg3,
	203	abi_long arg4, abi_long arg5, abi_long arg6);
	204	void print_syscall_ret(int num, abi_long arg1);
b92c47c1 TS	205	extern int do_strace;
b92c47c1 TS	206
b346ff46	207	/* signal.c */
624f7979	208	void process_pending_signals(CPUState *cpu_env);
b346ff46	209	void signal_init(void);
c227f099 AL	210	int queue_signal(CPUState env, int sig, target_siginfo_t info);
	211	void host_to_target_siginfo(target_siginfo_t tinfo, const siginfo_t info);
	212	void target_to_host_siginfo(siginfo_t info, const target_siginfo_t tinfo);
4cb05961	213	int target_to_host_signal(int sig);
1d9d8b55	214	int host_to_target_signal(int sig);
b346ff46 FB	215	long do_sigreturn(CPUState *env);
b346ff46 FB	216	long do_rt_sigreturn(CPUState *env);
579a97f7	217	abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
b346ff46 FB	218
b346ff46 FB	219	#ifdef TARGET_I386
631271d7 FB	220	/* vm86.c */
631271d7 FB	221	void save_v86_state(CPUX86State *env);
447db213	222	void handle_vm86_trap(CPUX86State *env, int trapno);
631271d7	223	void handle_vm86_fault(CPUX86State *env);
992f48a0	224	int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
5bfb56b2 BS	225	#elif defined(TARGET_SPARC64)
	226	void sparc64_set_context(CPUSPARCState *env);
	227	void sparc64_get_context(CPUSPARCState *env);
b346ff46	228	#endif
631271d7	229
54936004	230	/* mmap.c */
992f48a0 BS	231	int target_mprotect(abi_ulong start, abi_ulong len, int prot);
	232	abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
	233	int flags, int fd, abi_ulong offset);
	234	int target_munmap(abi_ulong start, abi_ulong len);
	235	abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
	236	abi_ulong new_size, unsigned long flags,
	237	abi_ulong new_addr);
	238	int target_msync(abi_ulong start, abi_ulong len, int flags);
0776590d	239	extern unsigned long last_brk;
c8a706fe PB	240	void mmap_lock(void);
c8a706fe PB	241	void mmap_unlock(void);
9ad197d9	242	abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
c2764719 PB	243	void cpu_list_lock(void);
c2764719 PB	244	void cpu_list_unlock(void);
2f7bb878	245	#if defined(CONFIG_USE_NPTL)
d5975363 PB	246	void mmap_fork_start(void);
	247	void mmap_fork_end(int child);
	248	#endif
54936004	249
440c7e85 BS	250	/* main.c */
	251	extern unsigned long x86_stack_size;
	252
edf779ff FB	253	/* user access */
	254
	255	#define VERIFY_READ 0
579a97f7	256	#define VERIFY_WRITE 1 /* implies read access */
edf779ff	257
dae3270c FB	258	static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
	259	{
	260	return page_check_range((target_ulong)addr, size,
	261	(type == VERIFY_READ) ? PAGE_READ : (PAGE_READ \| PAGE_WRITE)) == 0;
	262	}
edf779ff	263
89343ecd	264	/* NOTE __get_user and __put_user use host pointers and don't check access. */
579a97f7 FB	265	/* These are usually used to access struct data members once the
	266	* struct has been locked - usually with lock_user_struct().
	267	*/
89343ecd	268	#define __put_user(x, hptr)\
edf779ff	269	({\
89343ecd	270	int size = sizeof(*hptr);\
edf779ff FB	271	switch(size) {\
edf779ff FB	272	case 1:\
2f619698	273	(uint8_t )(hptr) = (uint8_t)(typeof(*hptr))(x);\
edf779ff FB	274	break;\
edf779ff FB	275	case 2:\
425be425	276	(uint16_t )(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\
edf779ff FB	277	break;\
edf779ff FB	278	case 4:\
425be425	279	(uint32_t )(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\
edf779ff FB	280	break;\
edf779ff FB	281	case 8:\
89343ecd	282	(uint64_t )(hptr) = tswap64((typeof(*hptr))(x));\
edf779ff FB	283	break;\
	284	default:\
	285	abort();\
	286	}\
	287	0;\
	288	})
	289
89343ecd	290	#define __get_user(x, hptr) \
edf779ff	291	({\
89343ecd	292	int size = sizeof(*hptr);\
edf779ff FB	293	switch(size) {\
edf779ff FB	294	case 1:\
89343ecd	295	x = (typeof(hptr))(uint8_t *)(hptr);\
edf779ff FB	296	break;\
edf779ff FB	297	case 2:\
89343ecd	298	x = (typeof(hptr))tswap16((uint16_t *)(hptr));\
edf779ff FB	299	break;\
edf779ff FB	300	case 4:\
89343ecd	301	x = (typeof(hptr))tswap32((uint32_t *)(hptr));\
edf779ff FB	302	break;\
edf779ff FB	303	case 8:\
89343ecd	304	x = (typeof(hptr))tswap64((uint64_t *)(hptr));\
edf779ff FB	305	break;\
edf779ff FB	306	default:\
2f619698 FB	307	/* avoid warning */\
2f619698 FB	308	x = 0;\
edf779ff FB	309	abort();\
	310	}\
	311	0;\
	312	})
	313
579a97f7 FB	314	/* put_user()/get_user() take a guest address and check access */
	315	/* These are usually used to access an atomic data type, such as an int,
	316	* that has been passed by address. These internally perform locking
	317	* and unlocking on the data type.
	318	*/
	319	#define put_user(x, gaddr, target_type) \
	320	({ \
	321	abi_ulong __gaddr = (gaddr); \
	322	target_type *__hptr; \
	323	abi_long __ret; \
	324	if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
	325	__ret = __put_user((x), __hptr); \
	326	unlock_user(__hptr, __gaddr, sizeof(target_type)); \
	327	} else \
	328	__ret = -TARGET_EFAULT; \
	329	__ret; \
edf779ff FB	330	})
edf779ff FB	331
579a97f7 FB	332	#define get_user(x, gaddr, target_type) \
	333	({ \
	334	abi_ulong __gaddr = (gaddr); \
	335	target_type *__hptr; \
	336	abi_long __ret; \
	337	if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
	338	__ret = __get_user((x), __hptr); \
	339	unlock_user(__hptr, __gaddr, 0); \
2f619698 FB	340	} else { \
	341	/* avoid warning */ \
	342	(x) = 0; \
579a97f7	343	__ret = -TARGET_EFAULT; \
2f619698	344	} \
579a97f7	345	__ret; \
edf779ff FB	346	})
edf779ff FB	347
2f619698 FB	348	#define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
	349	#define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
	350	#define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
	351	#define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
	352	#define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
	353	#define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
	354	#define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
	355	#define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
	356	#define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
	357	#define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
	358
	359	#define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
	360	#define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
	361	#define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
	362	#define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
	363	#define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
	364	#define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
	365	#define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
	366	#define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
	367	#define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
	368	#define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
	369
579a97f7 FB	370	/* copy_from_user() and copy_to_user() are usually used to copy data
	371	* buffers between the target and host. These internally perform
	372	* locking/unlocking of the memory.
	373	*/
	374	abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
	375	abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
	376
53a5960a PB	377	/* Functions for accessing guest memory. The tget and tput functions
	378	read/write single values, byteswapping as neccessary. The lock_user
	379	gets a pointer to a contiguous area of guest memory, but does not perform
	380	and byteswapping. lock_user may return either a pointer to the guest
	381	memory, or a temporary buffer. */
	382
	383	/* Lock an area of guest memory into the host. If copy is true then the
	384	host area will have the same contents as the guest. */
579a97f7	385	static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
edf779ff	386	{
579a97f7 FB	387	if (!access_ok(type, guest_addr, len))
579a97f7 FB	388	return NULL;
53a5960a	389	#ifdef DEBUG_REMAP
579a97f7 FB	390	{
	391	void *addr;
	392	addr = malloc(len);
	393	if (copy)
	394	memcpy(addr, g2h(guest_addr), len);
	395	else
	396	memset(addr, 0, len);
	397	return addr;
	398	}
53a5960a PB	399	#else
	400	return g2h(guest_addr);
	401	#endif
edf779ff FB	402	}
edf779ff FB	403
579a97f7	404	/* Unlock an area of guest memory. The first LEN bytes must be
1235fc06	405	flushed back to guest memory. host_ptr = NULL is explicitly
579a97f7 FB	406	allowed and does nothing. */
579a97f7 FB	407	static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
992f48a0	408	long len)
edf779ff	409	{
579a97f7	410
53a5960a	411	#ifdef DEBUG_REMAP
579a97f7 FB	412	if (!host_ptr)
	413	return;
	414	if (host_ptr == g2h(guest_addr))
53a5960a PB	415	return;
53a5960a PB	416	if (len > 0)
06177d36	417	memcpy(g2h(guest_addr), host_ptr, len);
579a97f7	418	free(host_ptr);
53a5960a	419	#endif
edf779ff FB	420	}
edf779ff FB	421
579a97f7 FB	422	/* Return the length of a string in target memory or -TARGET_EFAULT if
	423	access error. */
	424	abi_long target_strlen(abi_ulong gaddr);
53a5960a PB	425
53a5960a PB	426	/* Like lock_user but for null terminated strings. */
992f48a0	427	static inline void *lock_user_string(abi_ulong guest_addr)
53a5960a	428	{
579a97f7 FB	429	abi_long len;
	430	len = target_strlen(guest_addr);
	431	if (len < 0)
	432	return NULL;
	433	return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
edf779ff FB	434	}
edf779ff FB	435
53a5960a	436	/* Helper macros for locking/ulocking a target struct. */
579a97f7 FB	437	#define lock_user_struct(type, host_ptr, guest_addr, copy) \
	438	(host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
	439	#define unlock_user_struct(host_ptr, guest_addr, copy) \
53a5960a PB	440	unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
53a5960a PB	441
2f7bb878	442	#if defined(CONFIG_USE_NPTL)
c8a706fe PB	443	#include <pthread.h>
	444	#endif
	445
e88de099	446	#endif /* QEMU_H */