linux-user/user-internals.h

   1 /*
   2  * user-internals.h: prototypes etc internal to the linux-user implementation
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; either version 2 of the License, or
   7  *  (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #ifndef LINUX_USER_USER_INTERNALS_H
  19 #define LINUX_USER_USER_INTERNALS_H
  20
  21 #include "exec/user/thunk.h"
  22 #include "exec/exec-all.h"
  23 #include "exec/tb-flush.h"
  24 #include "qemu/log.h"
  25
  26 extern char *exec_path;
  27 void init_task_state(TaskState *ts);
  28 void task_settid(TaskState *);
  29 void stop_all_tasks(void);
  30 extern const char *qemu_uname_release;
  31 extern unsigned long mmap_min_addr;
  32
  33 typedef struct IOCTLEntry IOCTLEntry;
  34
  35 typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp,
  36                              int fd, int cmd, abi_long arg);
  37
  38 struct IOCTLEntry {
  39     int target_cmd;
  40     unsigned int host_cmd;
  41     const char *name;
  42     int access;
  43     do_ioctl_fn *do_ioctl;
  44     const argtype arg_type[5];
  45 };
  46
  47 extern IOCTLEntry ioctl_entries[];
  48
  49 #define IOC_R 0x0001
  50 #define IOC_W 0x0002
  51 #define IOC_RW (IOC_R | IOC_W)
  52
  53 /*
  54  * Returns true if the image uses the FDPIC ABI. If this is the case,
  55  * we have to provide some information (loadmap, pt_dynamic_info) such
  56  * that the program can be relocated adequately. This is also useful
  57  * when handling signals.
  58  */
  59 int info_is_fdpic(struct image_info *info);
  60
  61 void target_set_brk(abi_ulong new_brk);
  62 void syscall_init(void);
  63 abi_long do_syscall(CPUArchState *cpu_env, int num, abi_long arg1,
  64                     abi_long arg2, abi_long arg3, abi_long arg4,
  65                     abi_long arg5, abi_long arg6, abi_long arg7,
  66                     abi_long arg8);
  67 extern __thread CPUState *thread_cpu;
  68 G_NORETURN void cpu_loop(CPUArchState *env);
  69 abi_long get_errno(abi_long ret);
  70 const char *target_strerror(int err);
  71 int get_osversion(void);
  72 void init_qemu_uname_release(void);
  73 void fork_start(void);
  74 void fork_end(int child);
  75
  76 /**
  77  * probe_guest_base:
  78  * @image_name: the executable being loaded
  79  * @loaddr: the lowest fixed address within the executable
  80  * @hiaddr: the highest fixed address within the executable
  81  *
  82  * Creates the initial guest address space in the host memory space.
  83  *
  84  * If @loaddr == 0, then no address in the executable is fixed, i.e.
  85  * it is fully relocatable.  In that case @hiaddr is the size of the
  86  * executable minus one.
  87  *
  88  * This function will not return if a valid value for guest_base
  89  * cannot be chosen.  On return, the executable loader can expect
  90  *
  91  *    target_mmap(loaddr, hiaddr - loaddr + 1, ...)
  92  *
  93  * to succeed.
  94  */
  95 void probe_guest_base(const char *image_name,
  96                       abi_ulong loaddr, abi_ulong hiaddr);
  97
  98 /* syscall.c */
  99 int host_to_target_waitstatus(int status);
 100
 101 #ifdef TARGET_I386
 102 /* vm86.c */
 103 void save_v86_state(CPUX86State *env);
 104 void handle_vm86_trap(CPUX86State *env, int trapno);
 105 void handle_vm86_fault(CPUX86State *env);
 106 int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
 107 #elif defined(TARGET_SPARC64)
 108 void sparc64_set_context(CPUSPARCState *env);
 109 void sparc64_get_context(CPUSPARCState *env);
 110 #endif
 111
 112 static inline int is_error(abi_long ret)
 113 {
 114     return (abi_ulong)ret >= (abi_ulong)(-4096);
 115 }
 116
 117 #if (TARGET_ABI_BITS == 32) && !defined(TARGET_ABI_MIPSN32)
 118 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1)
 119 {
 120 #if TARGET_BIG_ENDIAN
 121     return ((uint64_t)word0 << 32) | word1;
 122 #else
 123     return ((uint64_t)word1 << 32) | word0;
 124 #endif
 125 }
 126 #else /* TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) */
 127 static inline uint64_t target_offset64(uint64_t word0, uint64_t word1)
 128 {
 129     return word0;
 130 }
 131 #endif /* TARGET_ABI_BITS != 32 */
 132
 133 void print_termios(void *arg);
 134
 135 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */
 136 #ifdef TARGET_ARM
 137 static inline int regpairs_aligned(CPUArchState *cpu_env, int num)
 138 {
 139     return cpu_env->eabi;
 140 }
 141 #elif defined(TARGET_MIPS) && defined(TARGET_ABI_MIPSO32)
 142 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 1; }
 143 #elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
 144 /*
 145  * SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs
 146  * of registers which translates to the same as ARM/MIPS, because we start with
 147  * r3 as arg1
 148  */
 149 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 1; }
 150 #elif defined(TARGET_SH4)
 151 /* SH4 doesn't align register pairs, except for p{read,write}64 */
 152 static inline int regpairs_aligned(CPUArchState *cpu_env, int num)
 153 {
 154     switch (num) {
 155     case TARGET_NR_pread64:
 156     case TARGET_NR_pwrite64:
 157         return 1;
 158
 159     default:
 160         return 0;
 161     }
 162 }
 163 #elif defined(TARGET_XTENSA)
 164 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 1; }
 165 #elif defined(TARGET_HEXAGON)
 166 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 1; }
 167 #else
 168 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 0; }
 169 #endif
 170
 171 /**
 172  * preexit_cleanup: housekeeping before the guest exits
 173  *
 174  * env: the CPU state
 175  * code: the exit code
 176  */
 177 void preexit_cleanup(CPUArchState *env, int code);
 178
 179 /*
 180  * Include target-specific struct and function definitions;
 181  * they may need access to the target-independent structures
 182  * above, so include them last.
 183  */
 184 #include "target_cpu.h"
 185 #include "target_structs.h"
 186
 187 #endif