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1.1 root 1: #ifndef QEMU_H
2: #define QEMU_H
3:
4: #include <signal.h>
5: #include <string.h>
6:
7: #include "cpu.h"
1.1.1.5 ! root 8:
! 9: #undef DEBUG_REMAP
! 10: #ifdef DEBUG_REMAP
! 11: #include <stdlib.h>
! 12: #endif /* DEBUG_REMAP */
! 13:
! 14: #ifdef TARGET_ABI32
! 15: typedef uint32_t abi_ulong;
! 16: typedef int32_t abi_long;
! 17: #define TARGET_ABI_FMT_lx "%08x"
! 18: #define TARGET_ABI_FMT_ld "%d"
! 19: #define TARGET_ABI_FMT_lu "%u"
! 20: #define TARGET_ABI_BITS 32
! 21: #else
! 22: typedef target_ulong abi_ulong;
! 23: typedef target_long abi_long;
! 24: #define TARGET_ABI_FMT_lx TARGET_FMT_lx
! 25: #define TARGET_ABI_FMT_ld TARGET_FMT_ld
! 26: #define TARGET_ABI_FMT_lu TARGET_FMT_lu
! 27: #define TARGET_ABI_BITS TARGET_LONG_BITS
! 28: /* for consistency, define ABI32 too */
! 29: #if TARGET_ABI_BITS == 32
! 30: #define TARGET_ABI32 1
! 31: #endif
! 32: #endif
! 33:
! 34: #include "thunk.h"
! 35: #include "syscall_defs.h"
1.1 root 36: #include "syscall.h"
1.1.1.5 ! root 37: #include "target_signal.h"
1.1 root 38: #include "gdbstub.h"
39:
40: /* This struct is used to hold certain information about the image.
41: * Basically, it replicates in user space what would be certain
42: * task_struct fields in the kernel
43: */
44: struct image_info {
1.1.1.5 ! root 45: abi_ulong load_addr;
! 46: abi_ulong start_code;
! 47: abi_ulong end_code;
! 48: abi_ulong start_data;
! 49: abi_ulong end_data;
! 50: abi_ulong start_brk;
! 51: abi_ulong brk;
! 52: abi_ulong start_mmap;
! 53: abi_ulong mmap;
! 54: abi_ulong rss;
! 55: abi_ulong start_stack;
! 56: abi_ulong entry;
! 57: abi_ulong code_offset;
! 58: abi_ulong data_offset;
1.1.1.4 root 59: char **host_argv;
1.1 root 60: int personality;
61: };
62:
63: #ifdef TARGET_I386
64: /* Information about the current linux thread */
65: struct vm86_saved_state {
66: uint32_t eax; /* return code */
67: uint32_t ebx;
68: uint32_t ecx;
69: uint32_t edx;
70: uint32_t esi;
71: uint32_t edi;
72: uint32_t ebp;
73: uint32_t esp;
74: uint32_t eflags;
75: uint32_t eip;
76: uint16_t cs, ss, ds, es, fs, gs;
77: };
78: #endif
79:
80: #ifdef TARGET_ARM
81: /* FPU emulator */
82: #include "nwfpe/fpa11.h"
83: #endif
84:
85: /* NOTE: we force a big alignment so that the stack stored after is
86: aligned too */
87: typedef struct TaskState {
88: struct TaskState *next;
89: #ifdef TARGET_ARM
90: /* FPA state */
91: FPA11 fpa;
92: int swi_errno;
93: #endif
1.1.1.5 ! root 94: #if defined(TARGET_I386) && !defined(TARGET_X86_64)
! 95: abi_ulong target_v86;
1.1 root 96: struct vm86_saved_state vm86_saved_regs;
97: struct target_vm86plus_struct vm86plus;
98: uint32_t v86flags;
99: uint32_t v86mask;
100: #endif
1.1.1.4 root 101: #ifdef TARGET_M68K
102: int sim_syscalls;
103: #endif
1.1.1.5 ! root 104: #if defined(TARGET_ARM) || defined(TARGET_M68K)
! 105: /* Extra fields for semihosted binaries. */
! 106: uint32_t stack_base;
! 107: uint32_t heap_base;
! 108: uint32_t heap_limit;
! 109: #endif
1.1 root 110: int used; /* non zero if used */
1.1.1.3 root 111: struct image_info *info;
1.1 root 112: uint8_t stack[0];
113: } __attribute__((aligned(16))) TaskState;
114:
115: extern TaskState *first_task_state;
1.1.1.3 root 116: extern const char *qemu_uname_release;
1.1 root 117:
1.1.1.3 root 118: /* ??? See if we can avoid exposing so much of the loader internals. */
119: /*
120: * MAX_ARG_PAGES defines the number of pages allocated for arguments
121: * and envelope for the new program. 32 should suffice, this gives
122: * a maximum env+arg of 128kB w/4KB pages!
123: */
124: #define MAX_ARG_PAGES 32
125:
126: /*
1.1.1.5 ! root 127: * This structure is used to hold the arguments that are
1.1.1.3 root 128: * used when loading binaries.
129: */
130: struct linux_binprm {
131: char buf[128];
132: void *page[MAX_ARG_PAGES];
1.1.1.5 ! root 133: abi_ulong p;
1.1.1.3 root 134: int fd;
135: int e_uid, e_gid;
136: int argc, envc;
137: char **argv;
138: char **envp;
139: char * filename; /* Name of binary */
140: };
141:
142: void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
1.1.1.5 ! root 143: abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
! 144: abi_ulong stringp, int push_ptr);
! 145: int loader_exec(const char * filename, char ** argv, char ** envp,
1.1 root 146: struct target_pt_regs * regs, struct image_info *infop);
147:
1.1.1.3 root 148: int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
149: struct image_info * info);
150: int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
151: struct image_info * info);
1.1.1.5 ! root 152: #ifdef TARGET_HAS_ELFLOAD32
! 153: int load_elf_binary_multi(struct linux_binprm *bprm,
! 154: struct target_pt_regs *regs,
! 155: struct image_info *info);
! 156: #endif
1.1.1.3 root 157:
1.1.1.5 ! root 158: abi_long memcpy_to_target(abi_ulong dest, const void *src,
! 159: unsigned long len);
! 160: void target_set_brk(abi_ulong new_brk);
! 161: abi_long do_brk(abi_ulong new_brk);
1.1 root 162: void syscall_init(void);
1.1.1.5 ! root 163: abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
! 164: abi_long arg2, abi_long arg3, abi_long arg4,
! 165: abi_long arg5, abi_long arg6);
1.1 root 166: void gemu_log(const char *fmt, ...) __attribute__((format(printf,1,2)));
167: extern CPUState *global_env;
168: void cpu_loop(CPUState *env);
169: void init_paths(const char *prefix);
170: const char *path(const char *pathname);
1.1.1.5 ! root 171: char *target_strerror(int err);
1.1 root 172:
173: extern int loglevel;
174: extern FILE *logfile;
175:
1.1.1.5 ! root 176: /* strace.c */
! 177: void print_syscall(int num,
! 178: abi_long arg1, abi_long arg2, abi_long arg3,
! 179: abi_long arg4, abi_long arg5, abi_long arg6);
! 180: void print_syscall_ret(int num, abi_long arg1);
! 181: extern int do_strace;
! 182:
1.1 root 183: /* signal.c */
184: void process_pending_signals(void *cpu_env);
185: void signal_init(void);
186: int queue_signal(int sig, target_siginfo_t *info);
187: void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
188: void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
189: long do_sigreturn(CPUState *env);
190: long do_rt_sigreturn(CPUState *env);
1.1.1.5 ! root 191: abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
1.1 root 192:
193: #ifdef TARGET_I386
194: /* vm86.c */
195: void save_v86_state(CPUX86State *env);
196: void handle_vm86_trap(CPUX86State *env, int trapno);
197: void handle_vm86_fault(CPUX86State *env);
1.1.1.5 ! root 198: int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
! 199: #elif defined(TARGET_SPARC64)
! 200: void sparc64_set_context(CPUSPARCState *env);
! 201: void sparc64_get_context(CPUSPARCState *env);
1.1 root 202: #endif
203:
204: /* mmap.c */
1.1.1.5 ! root 205: int target_mprotect(abi_ulong start, abi_ulong len, int prot);
! 206: abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
! 207: int flags, int fd, abi_ulong offset);
! 208: int target_munmap(abi_ulong start, abi_ulong len);
! 209: abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
! 210: abi_ulong new_size, unsigned long flags,
! 211: abi_ulong new_addr);
! 212: int target_msync(abi_ulong start, abi_ulong len, int flags);
1.1 root 213:
214: /* user access */
215:
216: #define VERIFY_READ 0
1.1.1.5 ! root 217: #define VERIFY_WRITE 1 /* implies read access */
1.1 root 218:
1.1.1.5 ! root 219: static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
! 220: {
! 221: return page_check_range((target_ulong)addr, size,
! 222: (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0;
! 223: }
1.1 root 224:
1.1.1.5 ! root 225: /* NOTE __get_user and __put_user use host pointers and don't check access. */
! 226: /* These are usually used to access struct data members once the
! 227: * struct has been locked - usually with lock_user_struct().
! 228: */
! 229: #define __put_user(x, hptr)\
1.1 root 230: ({\
1.1.1.5 ! root 231: int size = sizeof(*hptr);\
1.1 root 232: switch(size) {\
233: case 1:\
1.1.1.5 ! root 234: *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
1.1 root 235: break;\
236: case 2:\
1.1.1.5 ! root 237: *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\
1.1 root 238: break;\
239: case 4:\
1.1.1.5 ! root 240: *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\
1.1 root 241: break;\
242: case 8:\
1.1.1.5 ! root 243: *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
1.1 root 244: break;\
245: default:\
246: abort();\
247: }\
248: 0;\
249: })
250:
1.1.1.5 ! root 251: #define __get_user(x, hptr) \
1.1 root 252: ({\
1.1.1.5 ! root 253: int size = sizeof(*hptr);\
1.1 root 254: switch(size) {\
255: case 1:\
1.1.1.5 ! root 256: x = (typeof(*hptr))*(uint8_t *)(hptr);\
1.1 root 257: break;\
258: case 2:\
1.1.1.5 ! root 259: x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
1.1 root 260: break;\
261: case 4:\
1.1.1.5 ! root 262: x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
1.1 root 263: break;\
264: case 8:\
1.1.1.5 ! root 265: x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
1.1 root 266: break;\
267: default:\
1.1.1.5 ! root 268: /* avoid warning */\
! 269: x = 0;\
1.1 root 270: abort();\
271: }\
272: 0;\
273: })
274:
1.1.1.5 ! root 275: /* put_user()/get_user() take a guest address and check access */
! 276: /* These are usually used to access an atomic data type, such as an int,
! 277: * that has been passed by address. These internally perform locking
! 278: * and unlocking on the data type.
! 279: */
! 280: #define put_user(x, gaddr, target_type) \
! 281: ({ \
! 282: abi_ulong __gaddr = (gaddr); \
! 283: target_type *__hptr; \
! 284: abi_long __ret; \
! 285: if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \
! 286: __ret = __put_user((x), __hptr); \
! 287: unlock_user(__hptr, __gaddr, sizeof(target_type)); \
! 288: } else \
! 289: __ret = -TARGET_EFAULT; \
! 290: __ret; \
1.1 root 291: })
292:
1.1.1.5 ! root 293: #define get_user(x, gaddr, target_type) \
! 294: ({ \
! 295: abi_ulong __gaddr = (gaddr); \
! 296: target_type *__hptr; \
! 297: abi_long __ret; \
! 298: if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
! 299: __ret = __get_user((x), __hptr); \
! 300: unlock_user(__hptr, __gaddr, 0); \
! 301: } else { \
! 302: /* avoid warning */ \
! 303: (x) = 0; \
! 304: __ret = -TARGET_EFAULT; \
! 305: } \
! 306: __ret; \
1.1 root 307: })
308:
1.1.1.5 ! root 309: #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
! 310: #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
! 311: #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
! 312: #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
! 313: #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
! 314: #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
! 315: #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
! 316: #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
! 317: #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t)
! 318: #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t)
! 319:
! 320: #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
! 321: #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
! 322: #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
! 323: #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
! 324: #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
! 325: #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
! 326: #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
! 327: #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
! 328: #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t)
! 329: #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t)
! 330:
! 331: /* copy_from_user() and copy_to_user() are usually used to copy data
! 332: * buffers between the target and host. These internally perform
! 333: * locking/unlocking of the memory.
! 334: */
! 335: abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len);
! 336: abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len);
! 337:
1.1.1.2 root 338: /* Functions for accessing guest memory. The tget and tput functions
339: read/write single values, byteswapping as neccessary. The lock_user
340: gets a pointer to a contiguous area of guest memory, but does not perform
341: and byteswapping. lock_user may return either a pointer to the guest
342: memory, or a temporary buffer. */
343:
344: /* Lock an area of guest memory into the host. If copy is true then the
345: host area will have the same contents as the guest. */
1.1.1.5 ! root 346: static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy)
1.1.1.2 root 347: {
1.1.1.5 ! root 348: if (!access_ok(type, guest_addr, len))
! 349: return NULL;
1.1.1.2 root 350: #ifdef DEBUG_REMAP
1.1.1.5 ! root 351: {
! 352: void *addr;
! 353: addr = malloc(len);
! 354: if (copy)
! 355: memcpy(addr, g2h(guest_addr), len);
! 356: else
! 357: memset(addr, 0, len);
! 358: return addr;
! 359: }
1.1.1.2 root 360: #else
361: return g2h(guest_addr);
362: #endif
1.1 root 363: }
364:
1.1.1.5 ! root 365: /* Unlock an area of guest memory. The first LEN bytes must be
! 366: flushed back to guest memory. host_ptr = NULL is explicitely
! 367: allowed and does nothing. */
! 368: static inline void unlock_user(void *host_ptr, abi_ulong guest_addr,
! 369: long len)
1.1.1.2 root 370: {
1.1.1.5 ! root 371:
1.1.1.2 root 372: #ifdef DEBUG_REMAP
1.1.1.5 ! root 373: if (!host_ptr)
! 374: return;
! 375: if (host_ptr == g2h(guest_addr))
1.1.1.2 root 376: return;
377: if (len > 0)
1.1.1.5 ! root 378: memcpy(g2h(guest_addr), host_ptr, len);
! 379: free(host_ptr);
1.1.1.2 root 380: #endif
1.1 root 381: }
382:
1.1.1.5 ! root 383: /* Return the length of a string in target memory or -TARGET_EFAULT if
! 384: access error. */
! 385: abi_long target_strlen(abi_ulong gaddr);
1.1 root 386:
1.1.1.2 root 387: /* Like lock_user but for null terminated strings. */
1.1.1.5 ! root 388: static inline void *lock_user_string(abi_ulong guest_addr)
1.1.1.2 root 389: {
1.1.1.5 ! root 390: abi_long len;
! 391: len = target_strlen(guest_addr);
! 392: if (len < 0)
! 393: return NULL;
! 394: return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1);
1.1.1.2 root 395: }
396:
397: /* Helper macros for locking/ulocking a target struct. */
1.1.1.5 ! root 398: #define lock_user_struct(type, host_ptr, guest_addr, copy) \
! 399: (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy))
! 400: #define unlock_user_struct(host_ptr, guest_addr, copy) \
1.1.1.2 root 401: unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
402:
1.1 root 403: #endif /* QEMU_H */
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