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#ifndef GEMU_H
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#define GEMU_H
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#include "thunk.h" |
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#include <signal.h> |
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#include <string.h> |
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#include "syscall_defs.h" |
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#include "cpu.h" |
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#include "syscall.h" |
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/* This struct is used to hold certain information about the image.
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* Basically, it replicates in user space what would be certain
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* task_struct fields in the kernel
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*/
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struct image_info {
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unsigned long start_code; |
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unsigned long end_code; |
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unsigned long end_data; |
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unsigned long start_brk; |
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unsigned long brk; |
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unsigned long start_mmap; |
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unsigned long mmap; |
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unsigned long rss; |
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unsigned long start_stack; |
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unsigned long arg_start; |
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unsigned long arg_end; |
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unsigned long env_start; |
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unsigned long env_end; |
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unsigned long entry; |
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int personality;
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}; |
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#ifdef TARGET_I386
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/* Information about the current linux thread */
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struct vm86_saved_state {
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uint32_t eax; /* return code */
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uint32_t ebx; |
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uint32_t ecx; |
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uint32_t edx; |
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uint32_t esi; |
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uint32_t edi; |
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uint32_t ebp; |
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uint32_t esp; |
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uint32_t eflags; |
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uint32_t eip; |
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uint16_t cs, ss, ds, es, fs, gs; |
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}; |
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#endif
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#ifdef TARGET_ARM
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/* FPU emulator */
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#include "nwfpe/fpa11.h" |
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#undef put_user
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#undef get_user
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#endif
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/* NOTE: we force a big alignment so that the stack stored after is
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aligned too */
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typedef struct TaskState { |
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struct TaskState *next;
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#ifdef TARGET_ARM
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/* FPA state */
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FPA11 fpa; |
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#endif
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#ifdef TARGET_I386
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struct target_vm86plus_struct *target_v86;
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struct vm86_saved_state vm86_saved_regs;
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struct target_vm86plus_struct vm86plus;
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uint32_t v86flags; |
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uint32_t v86mask; |
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#endif
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int used; /* non zero if used */ |
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uint8_t stack[0];
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} __attribute__((aligned(16))) TaskState;
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extern TaskState *first_task_state;
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int elf_exec(const char * filename, char ** argv, char ** envp, |
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struct target_pt_regs * regs, struct image_info *infop); |
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void target_set_brk(char *new_brk); |
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void syscall_init(void); |
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long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3, |
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long arg4, long arg5, long arg6); |
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void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2))); |
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extern CPUState *global_env;
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void cpu_loop(CPUState *env);
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void init_paths(const char *prefix); |
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const char *path(const char *pathname); |
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extern int loglevel; |
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extern FILE *logfile;
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/* signal.c */
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void process_pending_signals(void *cpu_env); |
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void signal_init(void); |
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int queue_signal(int sig, target_siginfo_t *info); |
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void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info); |
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void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo); |
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long do_sigreturn(CPUState *env);
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long do_rt_sigreturn(CPUState *env);
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#ifdef TARGET_I386
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/* vm86.c */
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void save_v86_state(CPUX86State *env);
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void handle_vm86_trap(CPUX86State *env, int trapno); |
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void handle_vm86_fault(CPUX86State *env);
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int do_vm86(CPUX86State *env, long subfunction, |
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struct target_vm86plus_struct * target_v86);
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#endif
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/* mmap.c */
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int target_mprotect(unsigned long start, unsigned long len, int prot); |
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long target_mmap(unsigned long start, unsigned long len, int prot, |
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int flags, int fd, unsigned long offset); |
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int target_munmap(unsigned long start, unsigned long len); |
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long target_mremap(unsigned long old_addr, unsigned long old_size, |
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unsigned long new_size, unsigned long flags, |
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unsigned long new_addr); |
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int target_msync(unsigned long start, unsigned long len, int flags); |
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/* user access */
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#define VERIFY_READ 0 |
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#define VERIFY_WRITE 1 |
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#define access_ok(type,addr,size) (1) |
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#define __put_user(x,ptr)\
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({\ |
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int size = sizeof(*ptr);\ |
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switch(size) {\
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case 1:\ |
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stb(ptr, (typeof(*ptr))(x));\ |
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break;\
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case 2:\ |
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stw(ptr, (typeof(*ptr))(x));\ |
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break;\
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case 4:\ |
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stl(ptr, (typeof(*ptr))(x));\ |
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break;\
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case 8:\ |
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stq(ptr, (typeof(*ptr))(x));\ |
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break;\
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default:\
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abort();\ |
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}\ |
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0;\
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}) |
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#define __get_user(x, ptr) \
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({\ |
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int size = sizeof(*ptr);\ |
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switch(size) {\
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case 1:\ |
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x = (typeof(*ptr))ldub(ptr);\ |
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break;\
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case 2:\ |
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x = (typeof(*ptr))lduw(ptr);\ |
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break;\
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case 4:\ |
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x = (typeof(*ptr))ldl(ptr);\ |
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break;\
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case 8:\ |
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x = (typeof(*ptr))ldq(ptr);\ |
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break;\
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default:\
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abort();\ |
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}\ |
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0;\
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}) |
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static inline unsigned long __copy_to_user(void *dst, const void *src, |
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unsigned long size) |
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{ |
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memcpy(dst, src, size); |
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return 0; |
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} |
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static inline unsigned long __copy_from_user(void *dst, const void *src, |
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unsigned long size) |
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{ |
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memcpy(dst, src, size); |
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return 0; |
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} |
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static inline unsigned long __clear_user(void *dst, unsigned long size) |
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{ |
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memset(dst, 0, size);
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return 0; |
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} |
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#define put_user(x,ptr)\
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({\ |
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int __ret;\
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if (access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)))\ |
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__ret = __put_user(x, ptr);\ |
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else\
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__ret = -EFAULT;\ |
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__ret;\ |
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}) |
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#define get_user(x,ptr)\
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({\ |
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int __ret;\
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if (access_ok(VERIFY_READ, ptr, sizeof(*ptr)))\ |
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__ret = __get_user(x, ptr);\ |
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else\
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__ret = -EFAULT;\ |
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__ret;\ |
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}) |
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static inline unsigned long copy_to_user(void *dst, const void *src, |
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unsigned long size) |
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{ |
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if (access_ok(VERIFY_WRITE, dst, size))
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return __copy_to_user(dst, src, size);
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else
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return size;
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} |
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static inline unsigned long copy_from_user(void *dst, const void *src, |
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unsigned long size) |
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{ |
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if (access_ok(VERIFY_READ, src, size))
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return __copy_from_user(dst, src, size);
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else
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return size;
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} |
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static inline unsigned long clear_user(void *dst, unsigned long size) |
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{ |
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if (access_ok(VERIFY_WRITE, dst, size))
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return __clear_user(dst, size);
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else
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return size;
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} |
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#endif
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