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 "user/thunk.h" 22 #include "qemu/log.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(CPUArchState *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 abi_long get_errno(abi_long ret); 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(pid_t pid); 72 73 /** 74 * probe_guest_base: 75 * @image_name: the executable being loaded 76 * @loaddr: the lowest fixed address within the executable 77 * @hiaddr: the highest fixed address within 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, i.e. 82 * it is fully relocatable. In that case @hiaddr is the size of the 83 * executable minus one. 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 + 1, ...) 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 int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr); 103 #elif defined(TARGET_SPARC64) 104 void sparc64_set_context(CPUSPARCState *env); 105 void sparc64_get_context(CPUSPARCState *env); 106 #endif 107 108 static inline int is_error(abi_long ret) 109 { 110 return (abi_ulong)ret >= (abi_ulong)(-4096); 111 } 112 113 #if (TARGET_ABI_BITS == 32) && !defined(TARGET_ABI_MIPSN32) 114 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1) 115 { 116 #if TARGET_BIG_ENDIAN 117 return ((uint64_t)word0 << 32) | word1; 118 #else 119 return ((uint64_t)word1 << 32) | word0; 120 #endif 121 } 122 #else /* TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) */ 123 static inline uint64_t target_offset64(uint64_t word0, uint64_t word1) 124 { 125 return word0; 126 } 127 #endif /* TARGET_ABI_BITS != 32 */ 128 129 void print_termios(void *arg); 130 131 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */ 132 #ifdef TARGET_ARM 133 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) 134 { 135 return cpu_env->eabi; 136 } 137 #elif defined(TARGET_MIPS) && defined(TARGET_ABI_MIPSO32) 138 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 1; } 139 #elif defined(TARGET_PPC) && !defined(TARGET_PPC64) 140 /* 141 * SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs 142 * of registers which translates to the same as ARM/MIPS, because we start with 143 * r3 as arg1 144 */ 145 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 1; } 146 #elif defined(TARGET_SH4) 147 /* SH4 doesn't align register pairs, except for p{read,write}64 */ 148 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) 149 { 150 switch (num) { 151 case TARGET_NR_pread64: 152 case TARGET_NR_pwrite64: 153 return 1; 154 155 default: 156 return 0; 157 } 158 } 159 #elif defined(TARGET_XTENSA) 160 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 1; } 161 #elif defined(TARGET_HEXAGON) 162 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 1; } 163 #else 164 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 0; } 165 #endif 166 167 /** 168 * preexit_cleanup: housekeeping before the guest exits 169 * 170 * env: the CPU state 171 * code: the exit code 172 */ 173 void preexit_cleanup(CPUArchState *env, int code); 174 175 /* 176 * Include target-specific struct and function definitions; 177 * they may need access to the target-independent structures 178 * above, so include them last. 179 */ 180 #include "target_cpu.h" 181 #include "target_structs.h" 182 183 #endif 184