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-rw-r--r--linux-user/qemu.h458
1 files changed, 458 insertions, 0 deletions
diff --git a/linux-user/qemu.h b/linux-user/qemu.h
new file mode 100644
index 00000000..8012cc2f
--- /dev/null
+++ b/linux-user/qemu.h
@@ -0,0 +1,458 @@
+#ifndef QEMU_H
+#define QEMU_H
+
+#include <signal.h>
+#include <string.h>
+
+#include "cpu.h"
+#include "exec/cpu_ldst.h"
+
+#undef DEBUG_REMAP
+#ifdef DEBUG_REMAP
+#include <stdlib.h>
+#endif /* DEBUG_REMAP */
+
+#include "exec/user/abitypes.h"
+
+#include "exec/user/thunk.h"
+#include "syscall_defs.h"
+#include "syscall.h"
+#include "exec/gdbstub.h"
+#include "qemu/queue.h"
+
+#define THREAD __thread
+
+/* 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
+
+#if defined(TARGET_ARM) && defined(TARGET_ABI32)
+/* 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
+# ifdef TARGET_ABI32
+ /* FPA state */
+ FPA11 fpa;
+# endif
+ 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
+ abi_ulong child_tidptr;
+#ifdef TARGET_M68K
+ int sim_syscalls;
+ abi_ulong tp_value;
+#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 */
+ bool sigsegv_blocked; /* SIGSEGV blocked by guest */
+ 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(int fdexec, 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 image_info *info);
+int load_flt_binary(struct linux_binprm *bprm, 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 CPUState *thread_cpu;
+void cpu_loop(CPUArchState *env);
+char *target_strerror(int err);
+int get_osversion(void);
+void init_qemu_uname_release(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"
+
+/* syscall.c */
+int host_to_target_waitstatus(int status);
+
+/* 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);
+int do_sigprocmask(int how, const sigset_t *set, sigset_t *oldset);
+
+#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);
+void mmap_fork_start(void);
+void mmap_fork_end(int child);
+
+/* 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. */
+
+/* Tricky points:
+ - Use __builtin_choose_expr to avoid type promotion from ?:,
+ - Invalid sizes result in a compile time error stemming from
+ the fact that abort has no parameters.
+ - It's easier to use the endian-specific unaligned load/store
+ functions than host-endian unaligned load/store plus tswapN. */
+
+#define __put_user_e(x, hptr, e) \
+ (__builtin_choose_expr(sizeof(*(hptr)) == 1, stb_p, \
+ __builtin_choose_expr(sizeof(*(hptr)) == 2, stw_##e##_p, \
+ __builtin_choose_expr(sizeof(*(hptr)) == 4, stl_##e##_p, \
+ __builtin_choose_expr(sizeof(*(hptr)) == 8, stq_##e##_p, abort)))) \
+ ((hptr), (x)), (void)0)
+
+#define __get_user_e(x, hptr, e) \
+ ((x) = (typeof(*hptr))( \
+ __builtin_choose_expr(sizeof(*(hptr)) == 1, ldub_p, \
+ __builtin_choose_expr(sizeof(*(hptr)) == 2, lduw_##e##_p, \
+ __builtin_choose_expr(sizeof(*(hptr)) == 4, ldl_##e##_p, \
+ __builtin_choose_expr(sizeof(*(hptr)) == 8, ldq_##e##_p, abort)))) \
+ (hptr)), (void)0)
+
+#ifdef TARGET_WORDS_BIGENDIAN
+# define __put_user(x, hptr) __put_user_e(x, hptr, be)
+# define __get_user(x, hptr) __get_user_e(x, hptr, be)
+#else
+# define __put_user(x, hptr) __put_user_e(x, hptr, le)
+# define __get_user(x, hptr) __get_user_e(x, hptr, le)
+#endif
+
+/* 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 = 0; \
+ if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
+ __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 = 0; \
+ if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
+ __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 function
+ gets a pointer to a contiguous area of guest memory, but does not perform
+ any 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/unlocking 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)
+
+#include <pthread.h>
+
+/* Include target-specific struct and function definitions;
+ * they may need access to the target-independent structures
+ * above, so include them last.
+ */
+#include "target_cpu.h"
+#include "target_signal.h"
+#include "target_structs.h"
+
+#endif /* QEMU_H */
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