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 "qemu/log.h" 24 25 extern char *exec_path; 26 void init_task_state(TaskState *ts); 27 void task_settid(TaskState *); 28 void stop_all_tasks(void); 29 extern const char *qemu_uname_release; 30 extern unsigned long mmap_min_addr; 31 32 typedef struct IOCTLEntry IOCTLEntry; 33 34 typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp, 35 int fd, int cmd, abi_long arg); 36 37 struct IOCTLEntry { 38 int target_cmd; 39 unsigned int host_cmd; 40 const char *name; 41 int access; 42 do_ioctl_fn *do_ioctl; 43 const argtype arg_type[5]; 44 }; 45 46 extern IOCTLEntry ioctl_entries[]; 47 48 #define IOC_R 0x0001 49 #define IOC_W 0x0002 50 #define IOC_RW (IOC_R | IOC_W) 51 52 /* 53 * Returns true if the image uses the FDPIC ABI. If this is the case, 54 * we have to provide some information (loadmap, pt_dynamic_info) such 55 * that the program can be relocated adequately. This is also useful 56 * when handling signals. 57 */ 58 int info_is_fdpic(struct image_info *info); 59 60 void target_set_brk(abi_ulong new_brk); 61 void syscall_init(void); 62 abi_long do_syscall(void *cpu_env, int num, abi_long arg1, 63 abi_long arg2, abi_long arg3, abi_long arg4, 64 abi_long arg5, abi_long arg6, abi_long arg7, 65 abi_long arg8); 66 extern __thread CPUState *thread_cpu; 67 void QEMU_NORETURN cpu_loop(CPUArchState *env); 68 const char *target_strerror(int err); 69 int get_osversion(void); 70 void init_qemu_uname_release(void); 71 void fork_start(void); 72 void fork_end(int child); 73 74 /** 75 * probe_guest_base: 76 * @image_name: the executable being loaded 77 * @loaddr: the lowest fixed address in the executable 78 * @hiaddr: the highest fixed address in the executable 79 * 80 * Creates the initial guest address space in the host memory space. 81 * 82 * If @loaddr == 0, then no address in the executable is fixed, 83 * i.e. it is fully relocatable. In that case @hiaddr is the size 84 * of the executable. 85 * 86 * This function will not return if a valid value for guest_base 87 * cannot be chosen. On return, the executable loader can expect 88 * 89 * target_mmap(loaddr, hiaddr - loaddr, ...) 90 * 91 * to succeed. 92 */ 93 void probe_guest_base(const char *image_name, 94 abi_ulong loaddr, abi_ulong hiaddr); 95 96 /* syscall.c */ 97 int host_to_target_waitstatus(int status); 98 99 #ifdef TARGET_I386 100 /* vm86.c */ 101 void save_v86_state(CPUX86State *env); 102 void handle_vm86_trap(CPUX86State *env, int trapno); 103 void handle_vm86_fault(CPUX86State *env); 104 int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr); 105 #elif defined(TARGET_SPARC64) 106 void sparc64_set_context(CPUSPARCState *env); 107 void sparc64_get_context(CPUSPARCState *env); 108 #endif 109 110 static inline int is_error(abi_long ret) 111 { 112 return (abi_ulong)ret >= (abi_ulong)(-4096); 113 } 114 115 #if (TARGET_ABI_BITS == 32) && !defined(TARGET_ABI_MIPSN32) 116 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1) 117 { 118 #if TARGET_BIG_ENDIAN 119 return ((uint64_t)word0 << 32) | word1; 120 #else 121 return ((uint64_t)word1 << 32) | word0; 122 #endif 123 } 124 #else /* TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) */ 125 static inline uint64_t target_offset64(uint64_t word0, uint64_t word1) 126 { 127 return word0; 128 } 129 #endif /* TARGET_ABI_BITS != 32 */ 130 131 void print_termios(void *arg); 132 133 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */ 134 #ifdef TARGET_ARM 135 static inline int regpairs_aligned(void *cpu_env, int num) 136 { 137 return ((((CPUARMState *)cpu_env)->eabi) == 1) ; 138 } 139 #elif defined(TARGET_MIPS) && defined(TARGET_ABI_MIPSO32) 140 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } 141 #elif defined(TARGET_PPC) && !defined(TARGET_PPC64) 142 /* 143 * SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs 144 * of registers which translates to the same as ARM/MIPS, because we start with 145 * r3 as arg1 146 */ 147 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } 148 #elif defined(TARGET_SH4) 149 /* SH4 doesn't align register pairs, except for p{read,write}64 */ 150 static inline int regpairs_aligned(void *cpu_env, int num) 151 { 152 switch (num) { 153 case TARGET_NR_pread64: 154 case TARGET_NR_pwrite64: 155 return 1; 156 157 default: 158 return 0; 159 } 160 } 161 #elif defined(TARGET_XTENSA) 162 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } 163 #elif defined(TARGET_HEXAGON) 164 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; } 165 #else 166 static inline int regpairs_aligned(void *cpu_env, int num) { return 0; } 167 #endif 168 169 /** 170 * preexit_cleanup: housekeeping before the guest exits 171 * 172 * env: the CPU state 173 * code: the exit code 174 */ 175 void preexit_cleanup(CPUArchState *env, int code); 176 177 /* 178 * Include target-specific struct and function definitions; 179 * they may need access to the target-independent structures 180 * above, so include them last. 181 */ 182 #include "target_cpu.h" 183 #include "target_structs.h" 184 185 #endif 186