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 188