[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 */

#ifdef TARGET_ABI32
typedef uint32_t abi_ulong;
typedef int32_t abi_long;
#define TARGET_ABI_FMT_lx "%08x"
#define TARGET_ABI_FMT_ld "%d"
#define TARGET_ABI_FMT_lu "%u"
#define TARGET_ABI_BITS 32
#else
typedef target_ulong abi_ulong;
typedef target_long abi_long;
#define TARGET_ABI_FMT_lx TARGET_FMT_lx
#define TARGET_ABI_FMT_ld TARGET_FMT_ld
#define TARGET_ABI_FMT_lu TARGET_FMT_lu
#define TARGET_ABI_BITS TARGET_LONG_BITS
/* for consistency, define ABI32 too */
#if TARGET_ABI_BITS == 32
#define TARGET_ABI32 1
#endif
#endif

#include "thunk.h"
#include "syscall_defs.h"
#include "syscall.h"
#include "target_signal.h"
#include "gdbstub.h"

/* 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;
        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 {
    struct TaskState *next;
#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 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 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;

void init_task_state(TaskState *ts);
extern const char *qemu_uname_release;

/* ??? 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 32

/*
 * 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 */
};

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);

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 CPUState *global_env;
void cpu_loop(CPUState *env);
void init_paths(const char *prefix);
const char *path(const char *pathname);
char *target_strerror(int err);
int get_osversion(void);

extern int loglevel;
extern FILE *logfile;

/* 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);
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);

/* 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((typeof(*hptr))(x));\
        break;\
    case 4:\
        *(uint32_t *)(hptr) = tswap32((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 explicitely
   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(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
992f48a0 BS	14	#ifdef TARGET_ABI32
	15	typedef uint32_t abi_ulong;
	16	typedef int32_t abi_long;
f3e3285d TS	17	#define TARGET_ABI_FMT_lx "%08x"
	18	#define TARGET_ABI_FMT_ld "%d"
	19	#define TARGET_ABI_FMT_lu "%u"
992f48a0 BS	20	#define TARGET_ABI_BITS 32
	21	#else
	22	typedef target_ulong abi_ulong;
	23	typedef target_long abi_long;
f3e3285d TS	24	#define TARGET_ABI_FMT_lx TARGET_FMT_lx
	25	#define TARGET_ABI_FMT_ld TARGET_FMT_ld
	26	#define TARGET_ABI_FMT_lu TARGET_FMT_lu
992f48a0	27	#define TARGET_ABI_BITS TARGET_LONG_BITS
4683b130 FB	28	/* for consistency, define ABI32 too */
	29	#if TARGET_ABI_BITS == 32
	30	#define TARGET_ABI32 1
	31	#endif
992f48a0 BS	32	#endif
	33
	34	#include "thunk.h"
	35	#include "syscall_defs.h"
6180a181	36	#include "syscall.h"
a04e134a	37	#include "target_signal.h"
1fddef4b	38	#include "gdbstub.h"
66fb9763	39
31e31b8a FB	40	/* This struct is used to hold certain information about the image.
	41	* Basically, it replicates in user space what would be certain
	42	* task_struct fields in the kernel
	43	*/
	44	struct image_info {
992f48a0 BS	45	abi_ulong load_addr;
	46	abi_ulong start_code;
	47	abi_ulong end_code;
	48	abi_ulong start_data;
	49	abi_ulong end_data;
	50	abi_ulong start_brk;
	51	abi_ulong brk;
	52	abi_ulong start_mmap;
	53	abi_ulong mmap;
	54	abi_ulong rss;
	55	abi_ulong start_stack;
	56	abi_ulong entry;
	57	abi_ulong code_offset;
	58	abi_ulong data_offset;
38d0662a	59	char **host_argv;
31e31b8a FB	60	int personality;
	61	};
	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;
	89	target_siginfo_t info;
	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 {
	102	struct TaskState *next;
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 PB	114	#endif
	115	#ifdef TARGET_M68K
	116	int sim_syscalls;
a87295e8 PB	117	#endif
	118	#if defined(TARGET_ARM) \|\| defined(TARGET_M68K)
	119	/* Extra fields for semihosted binaries. */
	120	uint32_t stack_base;
	121	uint32_t heap_base;
	122	uint32_t heap_limit;
b346ff46	123	#endif
851e67a1	124	int used; /* non zero if used */
978efd6a	125	struct image_info *info;
624f7979 PB	126
	127	struct emulated_sigtable sigtab[TARGET_NSIG];
	128	struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
	129	struct sigqueue first_free; / first free siginfo queue entry */
	130	int signal_pending; /* non zero if a signal may be pending */
	131
851e67a1 FB	132	uint8_t stack[0];
	133	} __attribute__((aligned(16))) TaskState;
	134
624f7979	135	void init_task_state(TaskState *ts);
c5937220	136	extern const char *qemu_uname_release;
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	*/
	144	#define MAX_ARG_PAGES 32
	145
	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 */
	160	};
	161
	162	void do_init_thread(struct target_pt_regs regs, struct image_info infop);
992f48a0 BS	163	abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
992f48a0 BS	164	abi_ulong stringp, int push_ptr);
5fafdf24	165	int loader_exec(const char * filename, char argv, char envp,
01ffc75b	166	struct target_pt_regs * regs, struct image_info *infop);
31e31b8a	167
e5fe0c52 PB	168	int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
	169	struct image_info * info);
	170	int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
	171	struct image_info * info);
cb33da57 BS	172	#ifdef TARGET_HAS_ELFLOAD32
	173	int load_elf_binary_multi(struct linux_binprm *bprm,
	174	struct target_pt_regs *regs,
	175	struct image_info *info);
	176	#endif
e5fe0c52	177
579a97f7 FB	178	abi_long memcpy_to_target(abi_ulong dest, const void *src,
579a97f7 FB	179	unsigned long len);
992f48a0 BS	180	void target_set_brk(abi_ulong new_brk);
992f48a0 BS	181	abi_long do_brk(abi_ulong new_brk);
31e31b8a	182	void syscall_init(void);
992f48a0 BS	183	abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
	184	abi_long arg2, abi_long arg3, abi_long arg4,
	185	abi_long arg5, abi_long arg6);
31e31b8a	186	void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
b346ff46 FB	187	extern CPUState *global_env;
b346ff46 FB	188	void cpu_loop(CPUState *env);
32ce6337 FB	189	void init_paths(const char *prefix);
32ce6337 FB	190	const char path(const char pathname);
b92c47c1	191	char *target_strerror(int err);
a745ec6d	192	int get_osversion(void);
6977fbfd FB	193
6977fbfd FB	194	extern int loglevel;
631271d7 FB	195	extern FILE *logfile;
631271d7 FB	196
b92c47c1 TS	197	/* strace.c */
b92c47c1 TS	198	void print_syscall(int num,
c16f9ed3 FB	199	abi_long arg1, abi_long arg2, abi_long arg3,
	200	abi_long arg4, abi_long arg5, abi_long arg6);
	201	void print_syscall_ret(int num, abi_long arg1);
b92c47c1 TS	202	extern int do_strace;
b92c47c1 TS	203
b346ff46	204	/* signal.c */
624f7979	205	void process_pending_signals(CPUState *cpu_env);
b346ff46	206	void signal_init(void);
624f7979	207	int queue_signal(CPUState env, int sig, target_siginfo_t info);
b346ff46 FB	208	void host_to_target_siginfo(target_siginfo_t tinfo, const siginfo_t info);
b346ff46 FB	209	void target_to_host_siginfo(siginfo_t info, const target_siginfo_t tinfo);
4cb05961	210	int target_to_host_signal(int sig);
b346ff46 FB	211	long do_sigreturn(CPUState *env);
b346ff46 FB	212	long do_rt_sigreturn(CPUState *env);
579a97f7	213	abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
b346ff46 FB	214
b346ff46 FB	215	#ifdef TARGET_I386
631271d7 FB	216	/* vm86.c */
631271d7 FB	217	void save_v86_state(CPUX86State *env);
447db213	218	void handle_vm86_trap(CPUX86State *env, int trapno);
631271d7	219	void handle_vm86_fault(CPUX86State *env);
992f48a0	220	int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
5bfb56b2 BS	221	#elif defined(TARGET_SPARC64)
	222	void sparc64_set_context(CPUSPARCState *env);
	223	void sparc64_get_context(CPUSPARCState *env);
b346ff46	224	#endif
631271d7	225
54936004	226	/* mmap.c */
992f48a0 BS	227	int target_mprotect(abi_ulong start, abi_ulong len, int prot);
	228	abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
	229	int flags, int fd, abi_ulong offset);
	230	int target_munmap(abi_ulong start, abi_ulong len);
	231	abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
	232	abi_ulong new_size, unsigned long flags,
	233	abi_ulong new_addr);
	234	int target_msync(abi_ulong start, abi_ulong len, int flags);
0776590d	235	extern unsigned long last_brk;
c8a706fe PB	236	void mmap_lock(void);
c8a706fe PB	237	void mmap_unlock(void);
54936004	238
edf779ff FB	239	/* user access */
	240
	241	#define VERIFY_READ 0
579a97f7	242	#define VERIFY_WRITE 1 /* implies read access */
edf779ff	243
dae3270c FB	244	static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
	245	{
	246	return page_check_range((target_ulong)addr, size,
	247	(type == VERIFY_READ) ? PAGE_READ : (PAGE_READ \| PAGE_WRITE)) == 0;
	248	}
edf779ff	249
89343ecd	250	/* NOTE __get_user and __put_user use host pointers and don't check access. */
579a97f7 FB	251	/* These are usually used to access struct data members once the
	252	* struct has been locked - usually with lock_user_struct().
	253	*/
89343ecd	254	#define __put_user(x, hptr)\
edf779ff	255	({\
89343ecd	256	int size = sizeof(*hptr);\
edf779ff FB	257	switch(size) {\
edf779ff FB	258	case 1:\
2f619698	259	(uint8_t )(hptr) = (uint8_t)(typeof(*hptr))(x);\
edf779ff FB	260	break;\
edf779ff FB	261	case 2:\
89343ecd	262	(uint16_t )(hptr) = tswap16((typeof(*hptr))(x));\
edf779ff FB	263	break;\
edf779ff FB	264	case 4:\
89343ecd	265	(uint32_t )(hptr) = tswap32((typeof(*hptr))(x));\
edf779ff FB	266	break;\
edf779ff FB	267	case 8:\
89343ecd	268	(uint64_t )(hptr) = tswap64((typeof(*hptr))(x));\
edf779ff FB	269	break;\
	270	default:\
	271	abort();\
	272	}\
	273	0;\
	274	})
	275
89343ecd	276	#define __get_user(x, hptr) \
edf779ff	277	({\
89343ecd	278	int size = sizeof(*hptr);\
edf779ff FB	279	switch(size) {\
edf779ff FB	280	case 1:\
89343ecd	281	x = (typeof(hptr))(uint8_t *)(hptr);\
edf779ff FB	282	break;\
edf779ff FB	283	case 2:\
89343ecd	284	x = (typeof(hptr))tswap16((uint16_t *)(hptr));\
edf779ff FB	285	break;\
edf779ff FB	286	case 4:\
89343ecd	287	x = (typeof(hptr))tswap32((uint32_t *)(hptr));\
edf779ff FB	288	break;\
edf779ff FB	289	case 8:\
89343ecd	290	x = (typeof(hptr))tswap64((uint64_t *)(hptr));\
edf779ff FB	291	break;\
edf779ff FB	292	default:\
2f619698 FB	293	/* avoid warning */\
2f619698 FB	294	x = 0;\
edf779ff FB	295	abort();\
	296	}\
	297	0;\
	298	})
	299
579a97f7 FB	300	/* put_user()/get_user() take a guest address and check access */
	301	/* These are usually used to access an atomic data type, such as an int,
	302	* that has been passed by address. These internally perform locking
	303	* and unlocking on the data type.
	304	*/
	305	#define put_user(x, gaddr, target_type) \
	306	({ \
	307	abi_ulong __gaddr = (gaddr); \
	308	target_type *__hptr; \
	309	abi_long __ret; \
	310	if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
	311	__ret = __put_user((x), __hptr); \
	312	unlock_user(__hptr, __gaddr, sizeof(target_type)); \
	313	} else \
	314	__ret = -TARGET_EFAULT; \
	315	__ret; \
edf779ff FB	316	})
edf779ff FB	317
579a97f7 FB	318	#define get_user(x, gaddr, target_type) \
	319	({ \
	320	abi_ulong __gaddr = (gaddr); \
	321	target_type *__hptr; \
	322	abi_long __ret; \
	323	if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
	324	__ret = __get_user((x), __hptr); \
	325	unlock_user(__hptr, __gaddr, 0); \
2f619698 FB	326	} else { \
	327	/* avoid warning */ \
	328	(x) = 0; \
579a97f7	329	__ret = -TARGET_EFAULT; \
2f619698	330	} \
579a97f7	331	__ret; \
edf779ff FB	332	})
edf779ff FB	333
2f619698 FB	334	#define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
	335	#define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
	336	#define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
	337	#define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
	338	#define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
	339	#define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
	340	#define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
	341	#define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
	342	#define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
	343	#define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
	344
	345	#define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
	346	#define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
	347	#define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
	348	#define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
	349	#define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
	350	#define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
	351	#define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
	352	#define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
	353	#define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
	354	#define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
	355
579a97f7 FB	356	/* copy_from_user() and copy_to_user() are usually used to copy data
	357	* buffers between the target and host. These internally perform
	358	* locking/unlocking of the memory.
	359	*/
	360	abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
	361	abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
	362
53a5960a PB	363	/* Functions for accessing guest memory. The tget and tput functions
	364	read/write single values, byteswapping as neccessary. The lock_user
	365	gets a pointer to a contiguous area of guest memory, but does not perform
	366	and byteswapping. lock_user may return either a pointer to the guest
	367	memory, or a temporary buffer. */
	368
	369	/* Lock an area of guest memory into the host. If copy is true then the
	370	host area will have the same contents as the guest. */
579a97f7	371	static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
edf779ff	372	{
579a97f7 FB	373	if (!access_ok(type, guest_addr, len))
579a97f7 FB	374	return NULL;
53a5960a	375	#ifdef DEBUG_REMAP
579a97f7 FB	376	{
	377	void *addr;
	378	addr = malloc(len);
	379	if (copy)
	380	memcpy(addr, g2h(guest_addr), len);
	381	else
	382	memset(addr, 0, len);
	383	return addr;
	384	}
53a5960a PB	385	#else
	386	return g2h(guest_addr);
	387	#endif
edf779ff FB	388	}
edf779ff FB	389
579a97f7 FB	390	/* Unlock an area of guest memory. The first LEN bytes must be
	391	flushed back to guest memory. host_ptr = NULL is explicitely
	392	allowed and does nothing. */
	393	static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
992f48a0	394	long len)
edf779ff	395	{
579a97f7	396
53a5960a	397	#ifdef DEBUG_REMAP
579a97f7 FB	398	if (!host_ptr)
	399	return;
	400	if (host_ptr == g2h(guest_addr))
53a5960a PB	401	return;
53a5960a PB	402	if (len > 0)
06177d36	403	memcpy(g2h(guest_addr), host_ptr, len);
579a97f7	404	free(host_ptr);
53a5960a	405	#endif
edf779ff FB	406	}
edf779ff FB	407
579a97f7 FB	408	/* Return the length of a string in target memory or -TARGET_EFAULT if
	409	access error. */
	410	abi_long target_strlen(abi_ulong gaddr);
53a5960a PB	411
53a5960a PB	412	/* Like lock_user but for null terminated strings. */
992f48a0	413	static inline void *lock_user_string(abi_ulong guest_addr)
53a5960a	414	{
579a97f7 FB	415	abi_long len;
	416	len = target_strlen(guest_addr);
	417	if (len < 0)
	418	return NULL;
	419	return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
edf779ff FB	420	}
edf779ff FB	421
53a5960a	422	/* Helper macros for locking/ulocking a target struct. */
579a97f7 FB	423	#define lock_user_struct(type, host_ptr, guest_addr, copy) \
	424	(host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
	425	#define unlock_user_struct(host_ptr, guest_addr, copy) \
53a5960a PB	426	unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
53a5960a PB	427
c8a706fe PB	428	#if defined(USE_NPTL)
	429	#include <pthread.h>
	430	#endif
	431
e88de099	432	#endif /* QEMU_H */