[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_bias;
        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       stack_limit;
        abi_ulong       entry;
        abi_ulong       code_offset;
        abi_ulong       data_offset;
        abi_ulong       saved_auxv;
        abi_ulong       arg_start;
        abi_ulong       arg_end;
	int		personality;
#ifdef CONFIG_USE_FDPIC
        abi_ulong       loadmap_addr;
        uint16_t        nsegs;
        void           *loadsegs;
        abi_ulong       pt_dynamic_addr;
        struct image_info *other_info;
#endif
};

#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 */
} __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

/* Read a good amount of data initially, to hopefully get all the
   program headers loaded.  */
#define BPRM_BUF_SIZE  1024

/*
 * This structure is used to hold the arguments that are
 * used when loading binaries.
 */
struct linux_binprm {
        char buf[BPRM_BUF_SIZE] __attribute__((aligned));
        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);

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, ...) GCC_FMT_ATTR(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 guest_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)\
({\
    switch(sizeof(*hptr)) {\
    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) \
({\
    switch(sizeof(*hptr)) {\
    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 {
9955ffac	34	abi_ulong load_bias;
992f48a0 BS	35	abi_ulong load_addr;
	36	abi_ulong start_code;
	37	abi_ulong end_code;
	38	abi_ulong start_data;
	39	abi_ulong end_data;
	40	abi_ulong start_brk;
	41	abi_ulong brk;
	42	abi_ulong start_mmap;
	43	abi_ulong mmap;
	44	abi_ulong rss;
	45	abi_ulong start_stack;
97374d38	46	abi_ulong stack_limit;
992f48a0 BS	47	abi_ulong entry;
	48	abi_ulong code_offset;
	49	abi_ulong data_offset;
edf8e2af MW	50	abi_ulong saved_auxv;
	51	abi_ulong arg_start;
	52	abi_ulong arg_end;
31e31b8a	53	int personality;
1af02e83 MF	54	#ifdef CONFIG_USE_FDPIC
	55	abi_ulong loadmap_addr;
	56	uint16_t nsegs;
	57	void *loadsegs;
	58	abi_ulong pt_dynamic_addr;
	59	struct image_info *other_info;
	60	#endif
31e31b8a FB	61	};
31e31b8a FB	62
b346ff46	63	#ifdef TARGET_I386
851e67a1 FB	64	/* Information about the current linux thread */
	65	struct vm86_saved_state {
	66	uint32_t eax; /* return code */
	67	uint32_t ebx;
	68	uint32_t ecx;
	69	uint32_t edx;
	70	uint32_t esi;
	71	uint32_t edi;
	72	uint32_t ebp;
	73	uint32_t esp;
	74	uint32_t eflags;
	75	uint32_t eip;
	76	uint16_t cs, ss, ds, es, fs, gs;
	77	};
b346ff46	78	#endif
851e67a1	79
28c4f361 FB	80	#ifdef TARGET_ARM
	81	/* FPU emulator */
	82	#include "nwfpe/fpa11.h"
28c4f361 FB	83	#endif
28c4f361 FB	84
624f7979 PB	85	#define MAX_SIGQUEUE_SIZE 1024
	86
	87	struct sigqueue {
	88	struct sigqueue *next;
c227f099	89	target_siginfo_t info;
624f7979 PB	90	};
	91
	92	struct emulated_sigtable {
	93	int pending; /* true if signal is pending */
	94	struct sigqueue *first;
	95	struct sigqueue info; /* in order to always have memory for the
	96	first signal, we put it here */
	97	};
	98
851e67a1 FB	99	/* NOTE: we force a big alignment so that the stack stored after is
	100	aligned too */
	101	typedef struct TaskState {
edf8e2af	102	pid_t ts_tid; /* tid (or pid) of this task */
28c4f361 FB	103	#ifdef TARGET_ARM
	104	/* FPA state */
	105	FPA11 fpa;
a4f81979	106	int swi_errno;
28c4f361	107	#endif
84409ddb	108	#if defined(TARGET_I386) && !defined(TARGET_X86_64)
992f48a0	109	abi_ulong target_v86;
851e67a1	110	struct vm86_saved_state vm86_saved_regs;
b333af06	111	struct target_vm86plus_struct vm86plus;
631271d7 FB	112	uint32_t v86flags;
631271d7 FB	113	uint32_t v86mask;
e6e5906b	114	#endif
2f7bb878	115	#ifdef CONFIG_USE_NPTL
c2764719 PB	116	abi_ulong child_tidptr;
c2764719 PB	117	#endif
e6e5906b PB	118	#ifdef TARGET_M68K
e6e5906b PB	119	int sim_syscalls;
a87295e8 PB	120	#endif
	121	#if defined(TARGET_ARM) \|\| defined(TARGET_M68K)
	122	/* Extra fields for semihosted binaries. */
	123	uint32_t stack_base;
	124	uint32_t heap_base;
	125	uint32_t heap_limit;
b346ff46	126	#endif
851e67a1	127	int used; /* non zero if used */
978efd6a	128	struct image_info *info;
edf8e2af	129	struct linux_binprm *bprm;
624f7979 PB	130
	131	struct emulated_sigtable sigtab[TARGET_NSIG];
	132	struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
	133	struct sigqueue first_free; / first free siginfo queue entry */
	134	int signal_pending; /* non zero if a signal may be pending */
851e67a1 FB	135	} __attribute__((aligned(16))) TaskState;
851e67a1 FB	136
d088d664	137	extern char *exec_path;
624f7979	138	void init_task_state(TaskState *ts);
edf8e2af MW	139	void task_settid(TaskState *);
edf8e2af MW	140	void stop_all_tasks(void);
c5937220	141	extern const char *qemu_uname_release;
379f6698	142	extern unsigned long mmap_min_addr;
851e67a1	143
e5fe0c52 PB	144	/* ??? See if we can avoid exposing so much of the loader internals. */
	145	/*
	146	* MAX_ARG_PAGES defines the number of pages allocated for arguments
	147	* and envelope for the new program. 32 should suffice, this gives
	148	* a maximum env+arg of 128kB w/4KB pages!
	149	*/
fd4d81dd	150	#define MAX_ARG_PAGES 33
e5fe0c52	151
9955ffac RH	152	/* Read a good amount of data initially, to hopefully get all the
	153	program headers loaded. */
	154	#define BPRM_BUF_SIZE 1024
	155
e5fe0c52	156	/*
5fafdf24	157	* This structure is used to hold the arguments that are
e5fe0c52 PB	158	* used when loading binaries.
	159	*/
	160	struct linux_binprm {
9955ffac	161	char buf[BPRM_BUF_SIZE] __attribute__((aligned));
e5fe0c52	162	void *page[MAX_ARG_PAGES];
992f48a0	163	abi_ulong p;
e5fe0c52 PB	164	int fd;
	165	int e_uid, e_gid;
	166	int argc, envc;
	167	char **argv;
	168	char **envp;
	169	char * filename; /* Name of binary */
edf8e2af	170	int (core_dump)(int, const CPUState ); /* coredump routine */
e5fe0c52 PB	171	};
	172
	173	void do_init_thread(struct target_pt_regs regs, struct image_info infop);
992f48a0 BS	174	abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
992f48a0 BS	175	abi_ulong stringp, int push_ptr);
5fafdf24	176	int loader_exec(const char * filename, char argv, char envp,
edf8e2af MW	177	struct target_pt_regs * regs, struct image_info *infop,
edf8e2af MW	178	struct linux_binprm *);
31e31b8a	179
e5fe0c52 PB	180	int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
	181	struct image_info * info);
	182	int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
	183	struct image_info * info);
	184
579a97f7 FB	185	abi_long memcpy_to_target(abi_ulong dest, const void *src,
579a97f7 FB	186	unsigned long len);
992f48a0 BS	187	void target_set_brk(abi_ulong new_brk);
992f48a0 BS	188	abi_long do_brk(abi_ulong new_brk);
31e31b8a	189	void syscall_init(void);
992f48a0 BS	190	abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
	191	abi_long arg2, abi_long arg3, abi_long arg4,
	192	abi_long arg5, abi_long arg6);
e5924d89	193	void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
d5975363	194	extern THREAD CPUState *thread_env;
b346ff46	195	void cpu_loop(CPUState *env);
b92c47c1	196	char *target_strerror(int err);
a745ec6d	197	int get_osversion(void);
d5975363 PB	198	void fork_start(void);
d5975363 PB	199	void fork_end(int child);
6977fbfd	200
79383c9c	201	#include "qemu-log.h"
631271d7	202
b92c47c1 TS	203	/* strace.c */
b92c47c1 TS	204	void print_syscall(int num,
c16f9ed3 FB	205	abi_long arg1, abi_long arg2, abi_long arg3,
	206	abi_long arg4, abi_long arg5, abi_long arg6);
	207	void print_syscall_ret(int num, abi_long arg1);
b92c47c1 TS	208	extern int do_strace;
b92c47c1 TS	209
b346ff46	210	/* signal.c */
624f7979	211	void process_pending_signals(CPUState *cpu_env);
b346ff46	212	void signal_init(void);
c227f099 AL	213	int queue_signal(CPUState env, int sig, target_siginfo_t info);
	214	void host_to_target_siginfo(target_siginfo_t tinfo, const siginfo_t info);
	215	void target_to_host_siginfo(siginfo_t info, const target_siginfo_t tinfo);
4cb05961	216	int target_to_host_signal(int sig);
1d9d8b55	217	int host_to_target_signal(int sig);
b346ff46 FB	218	long do_sigreturn(CPUState *env);
b346ff46 FB	219	long do_rt_sigreturn(CPUState *env);
579a97f7	220	abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
b346ff46 FB	221
b346ff46 FB	222	#ifdef TARGET_I386
631271d7 FB	223	/* vm86.c */
631271d7 FB	224	void save_v86_state(CPUX86State *env);
447db213	225	void handle_vm86_trap(CPUX86State *env, int trapno);
631271d7	226	void handle_vm86_fault(CPUX86State *env);
992f48a0	227	int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
5bfb56b2 BS	228	#elif defined(TARGET_SPARC64)
	229	void sparc64_set_context(CPUSPARCState *env);
	230	void sparc64_get_context(CPUSPARCState *env);
b346ff46	231	#endif
631271d7	232
54936004	233	/* mmap.c */
992f48a0 BS	234	int target_mprotect(abi_ulong start, abi_ulong len, int prot);
	235	abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
	236	int flags, int fd, abi_ulong offset);
	237	int target_munmap(abi_ulong start, abi_ulong len);
	238	abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
	239	abi_ulong new_size, unsigned long flags,
	240	abi_ulong new_addr);
	241	int target_msync(abi_ulong start, abi_ulong len, int flags);
0776590d	242	extern unsigned long last_brk;
c8a706fe PB	243	void mmap_lock(void);
c8a706fe PB	244	void mmap_unlock(void);
9ad197d9	245	abi_ulong mmap_find_vma(abi_ulong, abi_ulong);
c2764719 PB	246	void cpu_list_lock(void);
c2764719 PB	247	void cpu_list_unlock(void);
2f7bb878	248	#if defined(CONFIG_USE_NPTL)
d5975363 PB	249	void mmap_fork_start(void);
	250	void mmap_fork_end(int child);
	251	#endif
54936004	252
440c7e85	253	/* main.c */
703e0e89	254	extern unsigned long guest_stack_size;
440c7e85	255
edf779ff FB	256	/* user access */
	257
	258	#define VERIFY_READ 0
579a97f7	259	#define VERIFY_WRITE 1 /* implies read access */
edf779ff	260
dae3270c FB	261	static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
	262	{
	263	return page_check_range((target_ulong)addr, size,
	264	(type == VERIFY_READ) ? PAGE_READ : (PAGE_READ \| PAGE_WRITE)) == 0;
	265	}
edf779ff	266
89343ecd	267	/* NOTE __get_user and __put_user use host pointers and don't check access. */
579a97f7 FB	268	/* These are usually used to access struct data members once the
	269	* struct has been locked - usually with lock_user_struct().
	270	*/
89343ecd	271	#define __put_user(x, hptr)\
edf779ff	272	({\
bee70008	273	switch(sizeof(*hptr)) {\
edf779ff	274	case 1:\
2f619698	275	(uint8_t )(hptr) = (uint8_t)(typeof(*hptr))(x);\
edf779ff FB	276	break;\
edf779ff FB	277	case 2:\
425be425	278	(uint16_t )(hptr) = tswap16((uint16_t)(typeof(*hptr))(x));\
edf779ff FB	279	break;\
edf779ff FB	280	case 4:\
425be425	281	(uint32_t )(hptr) = tswap32((uint32_t)(typeof(*hptr))(x));\
edf779ff FB	282	break;\
edf779ff FB	283	case 8:\
89343ecd	284	(uint64_t )(hptr) = tswap64((typeof(*hptr))(x));\
edf779ff FB	285	break;\
	286	default:\
	287	abort();\
	288	}\
	289	0;\
	290	})
	291
89343ecd	292	#define __get_user(x, hptr) \
edf779ff	293	({\
bee70008	294	switch(sizeof(*hptr)) {\
edf779ff	295	case 1:\
89343ecd	296	x = (typeof(hptr))(uint8_t *)(hptr);\
edf779ff FB	297	break;\
edf779ff FB	298	case 2:\
89343ecd	299	x = (typeof(hptr))tswap16((uint16_t *)(hptr));\
edf779ff FB	300	break;\
edf779ff FB	301	case 4:\
89343ecd	302	x = (typeof(hptr))tswap32((uint32_t *)(hptr));\
edf779ff FB	303	break;\
edf779ff FB	304	case 8:\
89343ecd	305	x = (typeof(hptr))tswap64((uint64_t *)(hptr));\
edf779ff FB	306	break;\
edf779ff FB	307	default:\
2f619698 FB	308	/* avoid warning */\
2f619698 FB	309	x = 0;\
edf779ff FB	310	abort();\
	311	}\
	312	0;\
	313	})
	314
579a97f7 FB	315	/* put_user()/get_user() take a guest address and check access */
	316	/* These are usually used to access an atomic data type, such as an int,
	317	* that has been passed by address. These internally perform locking
	318	* and unlocking on the data type.
	319	*/
	320	#define put_user(x, gaddr, target_type) \
	321	({ \
	322	abi_ulong __gaddr = (gaddr); \
	323	target_type *__hptr; \
	324	abi_long __ret; \
	325	if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
	326	__ret = __put_user((x), __hptr); \
	327	unlock_user(__hptr, __gaddr, sizeof(target_type)); \
	328	} else \
	329	__ret = -TARGET_EFAULT; \
	330	__ret; \
edf779ff FB	331	})
edf779ff FB	332
579a97f7 FB	333	#define get_user(x, gaddr, target_type) \
	334	({ \
	335	abi_ulong __gaddr = (gaddr); \
	336	target_type *__hptr; \
	337	abi_long __ret; \
	338	if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
	339	__ret = __get_user((x), __hptr); \
	340	unlock_user(__hptr, __gaddr, 0); \
2f619698 FB	341	} else { \
	342	/* avoid warning */ \
	343	(x) = 0; \
579a97f7	344	__ret = -TARGET_EFAULT; \
2f619698	345	} \
579a97f7	346	__ret; \
edf779ff FB	347	})
edf779ff FB	348
2f619698 FB	349	#define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
	350	#define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
	351	#define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
	352	#define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
	353	#define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
	354	#define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
	355	#define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
	356	#define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
	357	#define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
	358	#define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
	359
	360	#define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
	361	#define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
	362	#define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
	363	#define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
	364	#define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
	365	#define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
	366	#define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
	367	#define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
	368	#define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
	369	#define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
	370
579a97f7 FB	371	/* copy_from_user() and copy_to_user() are usually used to copy data
	372	* buffers between the target and host. These internally perform
	373	* locking/unlocking of the memory.
	374	*/
	375	abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
	376	abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
	377
53a5960a PB	378	/* Functions for accessing guest memory. The tget and tput functions
	379	read/write single values, byteswapping as neccessary. The lock_user
	380	gets a pointer to a contiguous area of guest memory, but does not perform
	381	and byteswapping. lock_user may return either a pointer to the guest
	382	memory, or a temporary buffer. */
	383
	384	/* Lock an area of guest memory into the host. If copy is true then the
	385	host area will have the same contents as the guest. */
579a97f7	386	static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
edf779ff	387	{
579a97f7 FB	388	if (!access_ok(type, guest_addr, len))
579a97f7 FB	389	return NULL;
53a5960a	390	#ifdef DEBUG_REMAP
579a97f7 FB	391	{
	392	void *addr;
	393	addr = malloc(len);
	394	if (copy)
	395	memcpy(addr, g2h(guest_addr), len);
	396	else
	397	memset(addr, 0, len);
	398	return addr;
	399	}
53a5960a PB	400	#else
	401	return g2h(guest_addr);
	402	#endif
edf779ff FB	403	}
edf779ff FB	404
579a97f7	405	/* Unlock an area of guest memory. The first LEN bytes must be
1235fc06	406	flushed back to guest memory. host_ptr = NULL is explicitly
579a97f7 FB	407	allowed and does nothing. */
579a97f7 FB	408	static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
992f48a0	409	long len)
edf779ff	410	{
579a97f7	411
53a5960a	412	#ifdef DEBUG_REMAP
579a97f7 FB	413	if (!host_ptr)
	414	return;
	415	if (host_ptr == g2h(guest_addr))
53a5960a PB	416	return;
53a5960a PB	417	if (len > 0)
06177d36	418	memcpy(g2h(guest_addr), host_ptr, len);
579a97f7	419	free(host_ptr);
53a5960a	420	#endif
edf779ff FB	421	}
edf779ff FB	422
579a97f7 FB	423	/* Return the length of a string in target memory or -TARGET_EFAULT if
	424	access error. */
	425	abi_long target_strlen(abi_ulong gaddr);
53a5960a PB	426
53a5960a PB	427	/* Like lock_user but for null terminated strings. */
992f48a0	428	static inline void *lock_user_string(abi_ulong guest_addr)
53a5960a	429	{
579a97f7 FB	430	abi_long len;
	431	len = target_strlen(guest_addr);
	432	if (len < 0)
	433	return NULL;
	434	return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
edf779ff FB	435	}
edf779ff FB	436
53a5960a	437	/* Helper macros for locking/ulocking a target struct. */
579a97f7 FB	438	#define lock_user_struct(type, host_ptr, guest_addr, copy) \
	439	(host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
	440	#define unlock_user_struct(host_ptr, guest_addr, copy) \
53a5960a PB	441	unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
53a5960a PB	442
2f7bb878	443	#if defined(CONFIG_USE_NPTL)
c8a706fe PB	444	#include <pthread.h>
	445	#endif
	446
e88de099	447	#endif /* QEMU_H */