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 "hostdep.h" 22 #include "exec/user/thunk.h" 23 24 extern char *exec_path; 25 void init_task_state(TaskState *ts); 26 void task_settid(TaskState *); 27 void stop_all_tasks(void); 28 extern const char *qemu_uname_release; 29 extern unsigned long mmap_min_addr; 30 31 typedef struct IOCTLEntry IOCTLEntry; 32 33 typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp, 34 int fd, int cmd, abi_long arg); 35 36 struct IOCTLEntry { 37 int target_cmd; 38 unsigned int host_cmd; 39 const char *name; 40 int access; 41 do_ioctl_fn *do_ioctl; 42 const argtype arg_type[5]; 43 }; 44 45 extern IOCTLEntry ioctl_entries[]; 46 47 #define IOC_R 0x0001 48 #define IOC_W 0x0002 49 #define IOC_RW (IOC_R | IOC_W) 50 51 /* 52 * Returns true if the image uses the FDPIC ABI. If this is the case, 53 * we have to provide some information (loadmap, pt_dynamic_info) such 54 * that the program can be relocated adequately. This is also useful 55 * when handling signals. 56 */ 57 int info_is_fdpic(struct image_info *info); 58 59 void target_set_brk(abi_ulong new_brk); 60 void syscall_init(void); 61 abi_long do_syscall(void *cpu_env, int num, abi_long arg1, 62 abi_long arg2, abi_long arg3, abi_long arg4, 63 abi_long arg5, abi_long arg6, abi_long arg7, 64 abi_long arg8); 65 extern __thread CPUState *thread_cpu; 66 void cpu_loop(CPUArchState *env); 67 const char *target_strerror(int err); 68 int get_osversion(void); 69 void init_qemu_uname_release(void); 70 void fork_start(void); 71 void fork_end(int child); 72 73 /** 74 * probe_guest_base: 75 * @image_name: the executable being loaded 76 * @loaddr: the lowest fixed address in the executable 77 * @hiaddr: the highest fixed address in the executable 78 * 79 * Creates the initial guest address space in the host memory space. 80 * 81 * If @loaddr == 0, then no address in the executable is fixed, 82 * i.e. it is fully relocatable. In that case @hiaddr is the size 83 * of the executable. 84 * 85 * This function will not return if a valid value for guest_base 86 * cannot be chosen. On return, the executable loader can expect 87 * 88 * target_mmap(loaddr, hiaddr - loaddr, ...) 89 * 90 * to succeed. 91 */ 92 void probe_guest_base(const char *image_name, 93 abi_ulong loaddr, abi_ulong hiaddr); 94 95 /* syscall.c */ 96 int host_to_target_waitstatus(int status); 97 98 #ifdef TARGET_I386 99 /* vm86.c */ 100 void save_v86_state(CPUX86State *env); 101 void handle_vm86_trap(CPUX86State *env, int trapno); 102 void handle_vm86_fault(CPUX86State *env); 103 int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr); 104 #elif defined(TARGET_SPARC64) 105 void sparc64_set_context(CPUSPARCState *env); 106 void sparc64_get_context(CPUSPARCState *env); 107 #endif 108 109 static inline int is_error(abi_long ret) 110 { 111 return (abi_ulong)ret >= (abi_ulong)(-4096); 112 } 113 114 #if TARGET_ABI_BITS == 32 115 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1) 116 { 117 #ifdef TARGET_WORDS_BIGENDIAN 118 return ((uint64_t)word0 << 32) | word1; 119 #else 120 return ((uint64_t)word1 << 32) | word0; 121 #endif 122 } 123 #else /* TARGET_ABI_BITS == 32 */ 124 static inline uint64_t target_offset64(uint64_t word0, uint64_t word1) 125 { 126 return word0; 127 } 128 #endif /* TARGET_ABI_BITS != 32 */ 129 130 void print_termios(void *arg); 131 132 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */ 133 #ifdef TARGET_ARM 134 static inline int regpairs_aligned(void *cpu_env, int num) 135 { 136 return ((((CPUARMState *)cpu_env)->eabi) == 1) ; 137 } 138 #elif defined(TARGET_MIPS) && (TARGET_ABI_BITS == 32) 139 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } 140 #elif defined(TARGET_PPC) && !defined(TARGET_PPC64) 141 /* 142 * SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs 143 * of registers which translates to the same as ARM/MIPS, because we start with 144 * r3 as arg1 145 */ 146 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } 147 #elif defined(TARGET_SH4) 148 /* SH4 doesn't align register pairs, except for p{read,write}64 */ 149 static inline int regpairs_aligned(void *cpu_env, int num) 150 { 151 switch (num) { 152 case TARGET_NR_pread64: 153 case TARGET_NR_pwrite64: 154 return 1; 155 156 default: 157 return 0; 158 } 159 } 160 #elif defined(TARGET_XTENSA) 161 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } 162 #elif defined(TARGET_HEXAGON) 163 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } 164 #else 165 static inline int regpairs_aligned(void *cpu_env, int num) { return 0; } 166 #endif 167 168 /** 169 * preexit_cleanup: housekeeping before the guest exits 170 * 171 * env: the CPU state 172 * code: the exit code 173 */ 174 void preexit_cleanup(CPUArchState *env, int code); 175 176 /* 177 * Include target-specific struct and function definitions; 178 * they may need access to the target-independent structures 179 * above, so include them last. 180 */ 181 #include "target_cpu.h" 182 #include "target_structs.h" 183 184 #endif 185