Imported Upstream version 1.2.0upstream/1.2.0

1 files changed, 467 insertions, 0 deletions

diff --git a/linux-user/qemu.h b/linux-user/qemu.h
new file mode 100644
index 000000000..69b27d714
--- /dev/null
+++ b/linux-user/qemu.h
@@ -0,0 +1,467 @@
+#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       auxv_len;
+        abi_ulong       arg_start;
+        abi_ulong       arg_end;
+        uint32_t        elf_flags;
+	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
+#ifdef TARGET_UNICORE32
+    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) || defined(TARGET_UNICORE32)
+    /* Extra fields for semihosted binaries.  */
+    uint32_t heap_base;
+    uint32_t heap_limit;
+#endif
+    uint32_t stack_base;
+    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 CPUArchState *); /* 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, abi_long arg7,
+                    abi_long arg8);
+void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
+extern THREAD CPUArchState *thread_env;
+void cpu_loop(CPUArchState *env);
+char *target_strerror(int err);
+int get_osversion(void);
+void fork_start(void);
+void fork_end(int child);
+
+/* Creates the initial guest address space in the host memory space using
+ * the given host start address hint and size.  The guest_start parameter
+ * specifies the start address of the guest space.  guest_base will be the
+ * difference between the host start address computed by this function and
+ * guest_start.  If fixed is specified, then the mapped address space must
+ * start at host_start.  The real start address of the mapped memory space is
+ * returned or -1 if there was an error.
+ */
+unsigned long init_guest_space(unsigned long host_start,
+                               unsigned long host_size,
+                               unsigned long guest_start,
+                               bool fixed);
+
+#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(CPUArchState *cpu_env);
+void signal_init(void);
+int queue_signal(CPUArchState *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(CPUArchState *env);
+long do_rt_sigreturn(CPUArchState *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;
+extern abi_ulong mmap_next_start;
+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 necessary.  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 */