| /* |
| * qemu bsd user mode definition |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| #ifndef QEMU_H |
| #define QEMU_H |
| |
| |
| #include "cpu.h" |
| #include "exec/cpu_ldst.h" |
| |
| #undef DEBUG_REMAP |
| #ifdef DEBUG_REMAP |
| #endif /* DEBUG_REMAP */ |
| |
| #include "exec/user/abitypes.h" |
| |
| enum BSDType { |
| target_freebsd, |
| target_netbsd, |
| target_openbsd, |
| }; |
| extern enum BSDType bsd_type; |
| |
| #include "syscall_defs.h" |
| #include "target_syscall.h" |
| #include "target_signal.h" |
| #include "exec/gdbstub.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; |
| int personality; |
| }; |
| |
| #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 */ |
| |
| struct TaskState *next; |
| 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[]; |
| } __attribute__((aligned(16))) TaskState; |
| |
| void init_task_state(TaskState *ts); |
| 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 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); |
| |
| 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_freebsd_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); |
| abi_long do_netbsd_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 do_openbsd_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_cpu; |
| void cpu_loop(CPUArchState *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 */ |
| struct syscallname { |
| int nr; |
| const char *name; |
| const char *format; |
| void (*call)(const struct syscallname *, |
| abi_long, abi_long, abi_long, |
| abi_long, abi_long, abi_long); |
| void (*result)(const struct syscallname *, abi_long); |
| }; |
| |
| void |
| print_freebsd_syscall(int num, |
| abi_long arg1, abi_long arg2, abi_long arg3, |
| abi_long arg4, abi_long arg5, abi_long arg6); |
| void print_freebsd_syscall_ret(int num, abi_long ret); |
| void |
| print_netbsd_syscall(int num, |
| abi_long arg1, abi_long arg2, abi_long arg3, |
| abi_long arg4, abi_long arg5, abi_long arg6); |
| void print_netbsd_syscall_ret(int num, abi_long ret); |
| void |
| print_openbsd_syscall(int num, |
| abi_long arg1, abi_long arg2, abi_long arg3, |
| abi_long arg4, abi_long arg5, abi_long arg6); |
| void print_openbsd_syscall_ret(int num, abi_long ret); |
| 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); |
| 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); |
| |
| /* 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_fork_start(void); |
| void mmap_fork_end(int child); |
| |
| /* 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((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 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 = g_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); |
| g_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) |
| |
| #if defined(CONFIG_USE_NPTL) |
| #include <pthread.h> |
| #endif |
| |
| #endif /* QEMU_H */ |
