8 #include "syscall_defs.h"
12 #include "target_signal.h"
15 /* This struct is used to hold certain information about the image.
16 * Basically, it replicates in user space what would be certain
17 * task_struct fields in the kernel
20 target_ulong load_addr;
21 target_ulong start_code;
22 target_ulong end_code;
23 target_ulong start_data;
24 target_ulong end_data;
25 target_ulong start_brk;
27 target_ulong start_mmap;
30 target_ulong start_stack;
32 target_ulong code_offset;
33 target_ulong data_offset;
39 /* Information about the current linux thread */
40 struct vm86_saved_state {
41 uint32_t eax; /* return code */
51 uint16_t cs, ss, ds, es, fs, gs;
57 #include "nwfpe/fpa11.h"
60 /* NOTE: we force a big alignment so that the stack stored after is
62 typedef struct TaskState {
63 struct TaskState *next;
69 #if defined(TARGET_I386) && !defined(TARGET_X86_64)
70 target_ulong target_v86;
71 struct vm86_saved_state vm86_saved_regs;
72 struct target_vm86plus_struct vm86plus;
79 #if defined(TARGET_ARM) || defined(TARGET_M68K)
80 /* Extra fields for semihosted binaries. */
85 int used; /* non zero if used */
86 struct image_info *info;
88 } __attribute__((aligned(16))) TaskState;
90 extern TaskState *first_task_state;
91 extern const char *qemu_uname_release;
93 /* ??? See if we can avoid exposing so much of the loader internals. */
95 * MAX_ARG_PAGES defines the number of pages allocated for arguments
96 * and envelope for the new program. 32 should suffice, this gives
97 * a maximum env+arg of 128kB w/4KB pages!
99 #define MAX_ARG_PAGES 32
102 * This structure is used to hold the arguments that are
103 * used when loading binaries.
105 struct linux_binprm {
107 void *page[MAX_ARG_PAGES];
114 char * filename; /* Name of binary */
117 void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
118 target_ulong loader_build_argptr(int envc, int argc, target_ulong sp,
119 target_ulong stringp, int push_ptr);
120 int loader_exec(const char * filename, char ** argv, char ** envp,
121 struct target_pt_regs * regs, struct image_info *infop);
123 int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
124 struct image_info * info);
125 int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
126 struct image_info * info);
127 #ifdef TARGET_HAS_ELFLOAD32
128 int load_elf_binary_multi(struct linux_binprm *bprm,
129 struct target_pt_regs *regs,
130 struct image_info *info);
133 void memcpy_to_target(target_ulong dest, const void *src,
135 void target_set_brk(target_ulong new_brk);
136 target_long do_brk(target_ulong new_brk);
137 void syscall_init(void);
138 target_long do_syscall(void *cpu_env, int num, target_long arg1,
139 target_long arg2, target_long arg3, target_long arg4,
140 target_long arg5, target_long arg6);
141 void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
142 extern CPUState *global_env;
143 void cpu_loop(CPUState *env);
144 void init_paths(const char *prefix);
145 const char *path(const char *pathname);
148 extern FILE *logfile;
151 void process_pending_signals(void *cpu_env);
152 void signal_init(void);
153 int queue_signal(int sig, target_siginfo_t *info);
154 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
155 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
156 long do_sigreturn(CPUState *env);
157 long do_rt_sigreturn(CPUState *env);
158 int do_sigaltstack(const struct target_sigaltstack *uss,
159 struct target_sigaltstack *uoss,
164 void save_v86_state(CPUX86State *env);
165 void handle_vm86_trap(CPUX86State *env, int trapno);
166 void handle_vm86_fault(CPUX86State *env);
167 int do_vm86(CPUX86State *env, long subfunction, target_ulong v86_addr);
168 #elif defined(TARGET_SPARC64)
169 void sparc64_set_context(CPUSPARCState *env);
170 void sparc64_get_context(CPUSPARCState *env);
174 int target_mprotect(target_ulong start, target_ulong len, int prot);
175 target_long target_mmap(target_ulong start, target_ulong len, int prot,
176 int flags, int fd, target_ulong offset);
177 int target_munmap(target_ulong start, target_ulong len);
178 target_long target_mremap(target_ulong old_addr, target_ulong old_size,
179 target_ulong new_size, unsigned long flags,
180 target_ulong new_addr);
181 int target_msync(target_ulong start, target_ulong len, int flags);
185 #define VERIFY_READ 0
186 #define VERIFY_WRITE 1
188 #define access_ok(type,addr,size) (1)
190 /* NOTE get_user and put_user use host addresses. */
191 #define __put_user(x,ptr)\
193 int size = sizeof(*ptr);\
196 *(uint8_t *)(ptr) = (typeof(*ptr))(x);\
199 *(uint16_t *)(ptr) = tswap16((typeof(*ptr))(x));\
202 *(uint32_t *)(ptr) = tswap32((typeof(*ptr))(x));\
205 *(uint64_t *)(ptr) = tswap64((typeof(*ptr))(x));\
213 #define __get_user(x, ptr) \
215 int size = sizeof(*ptr);\
218 x = (typeof(*ptr))*(uint8_t *)(ptr);\
221 x = (typeof(*ptr))tswap16(*(uint16_t *)(ptr));\
224 x = (typeof(*ptr))tswap32(*(uint32_t *)(ptr));\
227 x = (typeof(*ptr))tswap64(*(uint64_t *)(ptr));\
235 #define put_user(x,ptr)\
238 if (access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)))\
239 __ret = __put_user(x, ptr);\
245 #define get_user(x,ptr)\
248 if (access_ok(VERIFY_READ, ptr, sizeof(*ptr)))\
249 __ret = __get_user(x, ptr);\
255 /* Functions for accessing guest memory. The tget and tput functions
256 read/write single values, byteswapping as neccessary. The lock_user
257 gets a pointer to a contiguous area of guest memory, but does not perform
258 and byteswapping. lock_user may return either a pointer to the guest
259 memory, or a temporary buffer. */
261 /* Lock an area of guest memory into the host. If copy is true then the
262 host area will have the same contents as the guest. */
263 static inline void *lock_user(target_ulong guest_addr, long len, int copy)
269 memcpy(addr, g2h(guest_addr), len);
271 memset(addr, 0, len);
274 return g2h(guest_addr);
278 /* Unlock an area of guest memory. The first LEN bytes must be flushed back
280 static inline void unlock_user(void *host_addr, target_ulong guest_addr,
284 if (host_addr == g2h(guest_addr))
287 memcpy(g2h(guest_addr), host_addr, len);
292 /* Return the length of a string in target memory. */
293 static inline int target_strlen(target_ulong ptr)
295 return strlen(g2h(ptr));
298 /* Like lock_user but for null terminated strings. */
299 static inline void *lock_user_string(target_ulong guest_addr)
302 len = target_strlen(guest_addr) + 1;
303 return lock_user(guest_addr, len, 1);
306 /* Helper macros for locking/ulocking a target struct. */
307 #define lock_user_struct(host_ptr, guest_addr, copy) \
308 host_ptr = lock_user(guest_addr, sizeof(*host_ptr), copy)
309 #define unlock_user_struct(host_ptr, guest_addr, copy) \
310 unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
312 #define tget8(addr) ldub(addr)
313 #define tput8(addr, val) stb(addr, val)
314 #define tget16(addr) lduw(addr)
315 #define tput16(addr, val) stw(addr, val)
316 #define tget32(addr) ldl(addr)
317 #define tput32(addr, val) stl(addr, val)
318 #define tget64(addr) ldq(addr)
319 #define tput64(addr, val) stq(addr, val)
320 #if TARGET_LONG_BITS == 64
321 #define tgetl(addr) ldq(addr)
322 #define tputl(addr, val) stq(addr, val)
324 #define tgetl(addr) ldl(addr)
325 #define tputl(addr, val) stl(addr, val)