#ifndef QEMU_H #define QEMU_H #include "thunk.h" #include #include #include "syscall_defs.h" #include "cpu.h" #include "syscall.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 { unsigned long start_code; unsigned long end_code; unsigned long start_data; unsigned long end_data; unsigned long start_brk; unsigned long brk; unsigned long start_mmap; unsigned long mmap; unsigned long rss; unsigned long start_stack; unsigned long entry; target_ulong code_offset; target_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 /* 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; /* Extra fields for semihosted binaries. */ uint32_t stack_base; uint32_t heap_base; uint32_t heap_limit; int swi_errno; #endif #ifdef TARGET_I386 target_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 int used; /* non zero if used */ struct image_info *info; uint8_t stack[0]; } __attribute__((aligned(16))) TaskState; extern TaskState *first_task_state; 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]; unsigned long 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); target_ulong loader_build_argptr(int envc, int argc, target_ulong sp, target_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); void memcpy_to_target(target_ulong dest, const void *src, unsigned long len); void target_set_brk(target_ulong new_brk); long do_brk(target_ulong new_brk); void syscall_init(void); long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3, long arg4, long arg5, 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); extern int loglevel; extern FILE *logfile; /* signal.c */ void process_pending_signals(void *cpu_env); void signal_init(void); int queue_signal(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(CPUState *env); long do_rt_sigreturn(CPUState *env); #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, target_ulong v86_addr); #endif /* mmap.c */ int target_mprotect(target_ulong start, target_ulong len, int prot); long target_mmap(target_ulong start, target_ulong len, int prot, int flags, int fd, target_ulong offset); int target_munmap(target_ulong start, target_ulong len); long target_mremap(target_ulong old_addr, target_ulong old_size, target_ulong new_size, unsigned long flags, target_ulong new_addr); int target_msync(target_ulong start, target_ulong len, int flags); /* user access */ #define VERIFY_READ 0 #define VERIFY_WRITE 1 #define access_ok(type,addr,size) (1) /* NOTE get_user and put_user use host addresses. */ #define __put_user(x,ptr)\ ({\ int size = sizeof(*ptr);\ switch(size) {\ case 1:\ *(uint8_t *)(ptr) = (typeof(*ptr))(x);\ break;\ case 2:\ *(uint16_t *)(ptr) = tswap16((typeof(*ptr))(x));\ break;\ case 4:\ *(uint32_t *)(ptr) = tswap32((typeof(*ptr))(x));\ break;\ case 8:\ *(uint64_t *)(ptr) = tswap64((typeof(*ptr))(x));\ break;\ default:\ abort();\ }\ 0;\ }) #define __get_user(x, ptr) \ ({\ int size = sizeof(*ptr);\ switch(size) {\ case 1:\ x = (typeof(*ptr))*(uint8_t *)(ptr);\ break;\ case 2:\ x = (typeof(*ptr))tswap16(*(uint16_t *)(ptr));\ break;\ case 4:\ x = (typeof(*ptr))tswap32(*(uint32_t *)(ptr));\ break;\ case 8:\ x = (typeof(*ptr))tswap64(*(uint64_t *)(ptr));\ break;\ default:\ abort();\ }\ 0;\ }) #define put_user(x,ptr)\ ({\ int __ret;\ if (access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)))\ __ret = __put_user(x, ptr);\ else\ __ret = -EFAULT;\ __ret;\ }) #define get_user(x,ptr)\ ({\ int __ret;\ if (access_ok(VERIFY_READ, ptr, sizeof(*ptr)))\ __ret = __get_user(x, ptr);\ else\ __ret = -EFAULT;\ __ret;\ }) /* 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(target_ulong guest_addr, long len, int copy) { #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. */ static inline void unlock_user(void *host_addr, target_ulong guest_addr, long len) { #ifdef DEBUG_REMAP if (host_addr == g2h(guest_addr)) return; if (len > 0) memcpy(g2h(guest_addr), host_addr, len); free(host_addr); #endif } /* Return the length of a string in target memory. */ static inline int target_strlen(target_ulong ptr) { return strlen(g2h(ptr)); } /* Like lock_user but for null terminated strings. */ static inline void *lock_user_string(target_ulong guest_addr) { long len; len = target_strlen(guest_addr) + 1; return lock_user(guest_addr, len, 1); } /* Helper macros for locking/ulocking a target struct. */ #define lock_user_struct(host_ptr, guest_addr, copy) \ host_ptr = lock_user(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) #define tget8(addr) ldub(addr) #define tput8(addr, val) stb(addr, val) #define tget16(addr) lduw(addr) #define tput16(addr, val) stw(addr, val) #define tget32(addr) ldl(addr) #define tput32(addr, val) stl(addr, val) #define tget64(addr) ldq(addr) #define tput64(addr, val) stq(addr, val) #if TARGET_LONG_BITS == 64 #define tgetl(addr) ldq(addr) #define tputl(addr, val) stq(addr, val) #else #define tgetl(addr) ldl(addr) #define tputl(addr, val) stl(addr, val) #endif #endif /* QEMU_H */