bellard | e88de09 | 2005-02-07 12:35:39 +0000 | [diff] [blame] | 1 | #ifndef QEMU_H |
| 2 | #define QEMU_H |
bellard | 31e31b8 | 2003-02-18 22:55:36 +0000 | [diff] [blame] | 3 | |
bellard | 9de5e44 | 2003-03-23 16:49:39 +0000 | [diff] [blame] | 4 | #include <signal.h> |
bellard | edf779f | 2004-02-22 13:40:13 +0000 | [diff] [blame] | 5 | #include <string.h> |
bellard | 9de5e44 | 2003-03-23 16:49:39 +0000 | [diff] [blame] | 6 | |
bellard | 6180a18 | 2003-09-30 21:04:53 +0000 | [diff] [blame] | 7 | #include "cpu.h" |
Paolo Bonzini | f08b617 | 2014-03-28 19:42:10 +0100 | [diff] [blame] | 8 | #include "exec/cpu_ldst.h" |
blueswir1 | 992f48a | 2007-10-14 16:27:31 +0000 | [diff] [blame] | 9 | |
balrog | 06177d3 | 2007-12-24 13:47:52 +0000 | [diff] [blame] | 10 | #undef DEBUG_REMAP |
| 11 | #ifdef DEBUG_REMAP |
| 12 | #include <stdlib.h> |
| 13 | #endif /* DEBUG_REMAP */ |
| 14 | |
Paolo Bonzini | 022c62c | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 15 | #include "exec/user/abitypes.h" |
blueswir1 | 992f48a | 2007-10-14 16:27:31 +0000 | [diff] [blame] | 16 | |
Paolo Bonzini | 022c62c | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 17 | #include "exec/user/thunk.h" |
blueswir1 | 992f48a | 2007-10-14 16:27:31 +0000 | [diff] [blame] | 18 | #include "syscall_defs.h" |
bellard | 6180a18 | 2003-09-30 21:04:53 +0000 | [diff] [blame] | 19 | #include "syscall.h" |
Paolo Bonzini | 022c62c | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 20 | #include "exec/gdbstub.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 21 | #include "qemu/queue.h" |
bellard | 66fb976 | 2003-03-23 01:06:05 +0000 | [diff] [blame] | 22 | |
pbrook | d597536 | 2008-06-07 20:50:51 +0000 | [diff] [blame] | 23 | #define THREAD __thread |
pbrook | d597536 | 2008-06-07 20:50:51 +0000 | [diff] [blame] | 24 | |
bellard | 31e31b8 | 2003-02-18 22:55:36 +0000 | [diff] [blame] | 25 | /* This struct is used to hold certain information about the image. |
| 26 | * Basically, it replicates in user space what would be certain |
| 27 | * task_struct fields in the kernel |
| 28 | */ |
| 29 | struct image_info { |
Richard Henderson | 9955ffa | 2010-07-27 10:25:30 -0700 | [diff] [blame] | 30 | abi_ulong load_bias; |
blueswir1 | 992f48a | 2007-10-14 16:27:31 +0000 | [diff] [blame] | 31 | abi_ulong load_addr; |
| 32 | abi_ulong start_code; |
| 33 | abi_ulong end_code; |
| 34 | abi_ulong start_data; |
| 35 | abi_ulong end_data; |
| 36 | abi_ulong start_brk; |
| 37 | abi_ulong brk; |
| 38 | abi_ulong start_mmap; |
| 39 | abi_ulong mmap; |
| 40 | abi_ulong rss; |
| 41 | abi_ulong start_stack; |
Paul Brook | 97374d3 | 2010-06-16 13:03:51 +0100 | [diff] [blame] | 42 | abi_ulong stack_limit; |
blueswir1 | 992f48a | 2007-10-14 16:27:31 +0000 | [diff] [blame] | 43 | abi_ulong entry; |
| 44 | abi_ulong code_offset; |
| 45 | abi_ulong data_offset; |
Mika Westerberg | edf8e2a | 2009-04-07 09:57:11 +0300 | [diff] [blame] | 46 | abi_ulong saved_auxv; |
Alexander Graf | 125b0f5 | 2012-01-28 21:12:14 +0200 | [diff] [blame] | 47 | abi_ulong auxv_len; |
Mika Westerberg | edf8e2a | 2009-04-07 09:57:11 +0300 | [diff] [blame] | 48 | abi_ulong arg_start; |
| 49 | abi_ulong arg_end; |
Paul Brook | d8fd295 | 2012-03-30 18:02:50 +0100 | [diff] [blame] | 50 | uint32_t elf_flags; |
bellard | 31e31b8 | 2003-02-18 22:55:36 +0000 | [diff] [blame] | 51 | int personality; |
Mike Frysinger | 1af02e8 | 2011-02-07 01:05:50 -0500 | [diff] [blame] | 52 | #ifdef CONFIG_USE_FDPIC |
| 53 | abi_ulong loadmap_addr; |
| 54 | uint16_t nsegs; |
| 55 | void *loadsegs; |
| 56 | abi_ulong pt_dynamic_addr; |
| 57 | struct image_info *other_info; |
| 58 | #endif |
bellard | 31e31b8 | 2003-02-18 22:55:36 +0000 | [diff] [blame] | 59 | }; |
| 60 | |
bellard | b346ff4 | 2003-06-15 20:05:50 +0000 | [diff] [blame] | 61 | #ifdef TARGET_I386 |
bellard | 851e67a | 2003-03-29 16:53:14 +0000 | [diff] [blame] | 62 | /* Information about the current linux thread */ |
| 63 | struct vm86_saved_state { |
| 64 | uint32_t eax; /* return code */ |
| 65 | uint32_t ebx; |
| 66 | uint32_t ecx; |
| 67 | uint32_t edx; |
| 68 | uint32_t esi; |
| 69 | uint32_t edi; |
| 70 | uint32_t ebp; |
| 71 | uint32_t esp; |
| 72 | uint32_t eflags; |
| 73 | uint32_t eip; |
| 74 | uint16_t cs, ss, ds, es, fs, gs; |
| 75 | }; |
bellard | b346ff4 | 2003-06-15 20:05:50 +0000 | [diff] [blame] | 76 | #endif |
bellard | 851e67a | 2003-03-29 16:53:14 +0000 | [diff] [blame] | 77 | |
Peter Maydell | 848d72c | 2013-09-03 20:12:17 +0100 | [diff] [blame] | 78 | #if defined(TARGET_ARM) && defined(TARGET_ABI32) |
bellard | 28c4f36 | 2004-02-16 21:47:43 +0000 | [diff] [blame] | 79 | /* FPU emulator */ |
| 80 | #include "nwfpe/fpa11.h" |
bellard | 28c4f36 | 2004-02-16 21:47:43 +0000 | [diff] [blame] | 81 | #endif |
| 82 | |
pbrook | 624f797 | 2008-05-31 16:11:38 +0000 | [diff] [blame] | 83 | #define MAX_SIGQUEUE_SIZE 1024 |
| 84 | |
| 85 | struct sigqueue { |
| 86 | struct sigqueue *next; |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 87 | target_siginfo_t info; |
pbrook | 624f797 | 2008-05-31 16:11:38 +0000 | [diff] [blame] | 88 | }; |
| 89 | |
| 90 | struct emulated_sigtable { |
| 91 | int pending; /* true if signal is pending */ |
| 92 | struct sigqueue *first; |
| 93 | struct sigqueue info; /* in order to always have memory for the |
| 94 | first signal, we put it here */ |
| 95 | }; |
| 96 | |
bellard | 851e67a | 2003-03-29 16:53:14 +0000 | [diff] [blame] | 97 | /* NOTE: we force a big alignment so that the stack stored after is |
| 98 | aligned too */ |
| 99 | typedef struct TaskState { |
Mika Westerberg | edf8e2a | 2009-04-07 09:57:11 +0300 | [diff] [blame] | 100 | pid_t ts_tid; /* tid (or pid) of this task */ |
bellard | 28c4f36 | 2004-02-16 21:47:43 +0000 | [diff] [blame] | 101 | #ifdef TARGET_ARM |
Peter Maydell | 848d72c | 2013-09-03 20:12:17 +0100 | [diff] [blame] | 102 | # ifdef TARGET_ABI32 |
bellard | 28c4f36 | 2004-02-16 21:47:43 +0000 | [diff] [blame] | 103 | /* FPA state */ |
| 104 | FPA11 fpa; |
Peter Maydell | 848d72c | 2013-09-03 20:12:17 +0100 | [diff] [blame] | 105 | # endif |
bellard | a4f8197 | 2005-04-23 18:25:41 +0000 | [diff] [blame] | 106 | int swi_errno; |
bellard | 28c4f36 | 2004-02-16 21:47:43 +0000 | [diff] [blame] | 107 | #endif |
Guan Xuetao | d2fbca9 | 2011-04-12 16:27:03 +0800 | [diff] [blame] | 108 | #ifdef TARGET_UNICORE32 |
| 109 | int swi_errno; |
| 110 | #endif |
j_mayer | 84409dd | 2007-04-06 08:56:50 +0000 | [diff] [blame] | 111 | #if defined(TARGET_I386) && !defined(TARGET_X86_64) |
blueswir1 | 992f48a | 2007-10-14 16:27:31 +0000 | [diff] [blame] | 112 | abi_ulong target_v86; |
bellard | 851e67a | 2003-03-29 16:53:14 +0000 | [diff] [blame] | 113 | struct vm86_saved_state vm86_saved_regs; |
bellard | b333af0 | 2003-05-14 21:48:51 +0000 | [diff] [blame] | 114 | struct target_vm86plus_struct vm86plus; |
bellard | 631271d | 2003-05-10 13:14:52 +0000 | [diff] [blame] | 115 | uint32_t v86flags; |
| 116 | uint32_t v86mask; |
bellard | b346ff4 | 2003-06-15 20:05:50 +0000 | [diff] [blame] | 117 | #endif |
pbrook | c276471 | 2009-03-07 15:24:59 +0000 | [diff] [blame] | 118 | abi_ulong child_tidptr; |
pbrook | e6e5906 | 2006-10-22 00:18:54 +0000 | [diff] [blame] | 119 | #ifdef TARGET_M68K |
| 120 | int sim_syscalls; |
Peter Maydell | 1ccd937 | 2013-07-16 18:44:55 +0100 | [diff] [blame] | 121 | abi_ulong tp_value; |
pbrook | e6e5906 | 2006-10-22 00:18:54 +0000 | [diff] [blame] | 122 | #endif |
Guan Xuetao | d2fbca9 | 2011-04-12 16:27:03 +0800 | [diff] [blame] | 123 | #if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32) |
pbrook | a87295e | 2007-05-26 15:09:38 +0000 | [diff] [blame] | 124 | /* Extra fields for semihosted binaries. */ |
pbrook | a87295e | 2007-05-26 15:09:38 +0000 | [diff] [blame] | 125 | uint32_t heap_base; |
| 126 | uint32_t heap_limit; |
| 127 | #endif |
Riku Voipio | d0fd11f | 2012-01-28 22:00:17 +0200 | [diff] [blame] | 128 | uint32_t stack_base; |
bellard | 851e67a | 2003-03-29 16:53:14 +0000 | [diff] [blame] | 129 | int used; /* non zero if used */ |
Peter Maydell | a7ec0f9 | 2014-03-14 14:36:56 +0000 | [diff] [blame] | 130 | bool sigsegv_blocked; /* SIGSEGV blocked by guest */ |
pbrook | 978efd6 | 2006-06-17 18:30:42 +0000 | [diff] [blame] | 131 | struct image_info *info; |
Mika Westerberg | edf8e2a | 2009-04-07 09:57:11 +0300 | [diff] [blame] | 132 | struct linux_binprm *bprm; |
pbrook | 624f797 | 2008-05-31 16:11:38 +0000 | [diff] [blame] | 133 | |
| 134 | struct emulated_sigtable sigtab[TARGET_NSIG]; |
| 135 | struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */ |
| 136 | struct sigqueue *first_free; /* first free siginfo queue entry */ |
| 137 | int signal_pending; /* non zero if a signal may be pending */ |
bellard | 851e67a | 2003-03-29 16:53:14 +0000 | [diff] [blame] | 138 | } __attribute__((aligned(16))) TaskState; |
| 139 | |
aurel32 | d088d66 | 2009-01-30 20:09:01 +0000 | [diff] [blame] | 140 | extern char *exec_path; |
pbrook | 624f797 | 2008-05-31 16:11:38 +0000 | [diff] [blame] | 141 | void init_task_state(TaskState *ts); |
Mika Westerberg | edf8e2a | 2009-04-07 09:57:11 +0300 | [diff] [blame] | 142 | void task_settid(TaskState *); |
| 143 | void stop_all_tasks(void); |
pbrook | c593722 | 2006-05-14 11:30:38 +0000 | [diff] [blame] | 144 | extern const char *qemu_uname_release; |
Paul Brook | 379f669 | 2009-07-17 12:48:08 +0100 | [diff] [blame] | 145 | extern unsigned long mmap_min_addr; |
bellard | 851e67a | 2003-03-29 16:53:14 +0000 | [diff] [blame] | 146 | |
pbrook | e5fe0c5 | 2006-06-11 13:32:59 +0000 | [diff] [blame] | 147 | /* ??? See if we can avoid exposing so much of the loader internals. */ |
| 148 | /* |
| 149 | * MAX_ARG_PAGES defines the number of pages allocated for arguments |
| 150 | * and envelope for the new program. 32 should suffice, this gives |
| 151 | * a maximum env+arg of 128kB w/4KB pages! |
| 152 | */ |
Arnaud Patard | fd4d81d | 2009-06-19 10:39:36 +0300 | [diff] [blame] | 153 | #define MAX_ARG_PAGES 33 |
pbrook | e5fe0c5 | 2006-06-11 13:32:59 +0000 | [diff] [blame] | 154 | |
Richard Henderson | 9955ffa | 2010-07-27 10:25:30 -0700 | [diff] [blame] | 155 | /* Read a good amount of data initially, to hopefully get all the |
| 156 | program headers loaded. */ |
| 157 | #define BPRM_BUF_SIZE 1024 |
| 158 | |
pbrook | e5fe0c5 | 2006-06-11 13:32:59 +0000 | [diff] [blame] | 159 | /* |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 160 | * This structure is used to hold the arguments that are |
pbrook | e5fe0c5 | 2006-06-11 13:32:59 +0000 | [diff] [blame] | 161 | * used when loading binaries. |
| 162 | */ |
| 163 | struct linux_binprm { |
Richard Henderson | 9955ffa | 2010-07-27 10:25:30 -0700 | [diff] [blame] | 164 | char buf[BPRM_BUF_SIZE] __attribute__((aligned)); |
pbrook | e5fe0c5 | 2006-06-11 13:32:59 +0000 | [diff] [blame] | 165 | void *page[MAX_ARG_PAGES]; |
blueswir1 | 992f48a | 2007-10-14 16:27:31 +0000 | [diff] [blame] | 166 | abi_ulong p; |
pbrook | e5fe0c5 | 2006-06-11 13:32:59 +0000 | [diff] [blame] | 167 | int fd; |
| 168 | int e_uid, e_gid; |
| 169 | int argc, envc; |
| 170 | char **argv; |
| 171 | char **envp; |
| 172 | char * filename; /* Name of binary */ |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 173 | int (*core_dump)(int, const CPUArchState *); /* coredump routine */ |
pbrook | e5fe0c5 | 2006-06-11 13:32:59 +0000 | [diff] [blame] | 174 | }; |
| 175 | |
| 176 | void do_init_thread(struct target_pt_regs *regs, struct image_info *infop); |
blueswir1 | 992f48a | 2007-10-14 16:27:31 +0000 | [diff] [blame] | 177 | abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp, |
| 178 | abi_ulong stringp, int push_ptr); |
Laurent Vivier | 03cfd8f | 2013-08-30 01:46:44 +0200 | [diff] [blame] | 179 | int loader_exec(int fdexec, const char *filename, char **argv, char **envp, |
Mika Westerberg | edf8e2a | 2009-04-07 09:57:11 +0300 | [diff] [blame] | 180 | struct target_pt_regs * regs, struct image_info *infop, |
| 181 | struct linux_binprm *); |
bellard | 31e31b8 | 2003-02-18 22:55:36 +0000 | [diff] [blame] | 182 | |
Will Newton | f0116c5 | 2014-01-09 09:10:50 +0000 | [diff] [blame] | 183 | int load_elf_binary(struct linux_binprm *bprm, struct image_info *info); |
| 184 | int load_flt_binary(struct linux_binprm *bprm, struct image_info *info); |
pbrook | e5fe0c5 | 2006-06-11 13:32:59 +0000 | [diff] [blame] | 185 | |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 186 | abi_long memcpy_to_target(abi_ulong dest, const void *src, |
| 187 | unsigned long len); |
blueswir1 | 992f48a | 2007-10-14 16:27:31 +0000 | [diff] [blame] | 188 | void target_set_brk(abi_ulong new_brk); |
| 189 | abi_long do_brk(abi_ulong new_brk); |
bellard | 31e31b8 | 2003-02-18 22:55:36 +0000 | [diff] [blame] | 190 | void syscall_init(void); |
blueswir1 | 992f48a | 2007-10-14 16:27:31 +0000 | [diff] [blame] | 191 | abi_long do_syscall(void *cpu_env, int num, abi_long arg1, |
| 192 | abi_long arg2, abi_long arg3, abi_long arg4, |
Peter Maydell | 5945cfc | 2011-06-16 17:37:13 +0100 | [diff] [blame] | 193 | abi_long arg5, abi_long arg6, abi_long arg7, |
| 194 | abi_long arg8); |
Stefan Weil | e5924d8 | 2010-09-23 21:28:03 +0200 | [diff] [blame] | 195 | void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2); |
Andreas Färber | a2247f8 | 2013-06-09 19:47:04 +0200 | [diff] [blame] | 196 | extern THREAD CPUState *thread_cpu; |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 197 | void cpu_loop(CPUArchState *env); |
ths | b92c47c | 2007-11-01 00:07:38 +0000 | [diff] [blame] | 198 | char *target_strerror(int err); |
pbrook | a745ec6 | 2008-05-06 15:36:17 +0000 | [diff] [blame] | 199 | int get_osversion(void); |
Peter Maydell | 4a24a75 | 2013-09-03 20:12:20 +0100 | [diff] [blame] | 200 | void init_qemu_uname_release(void); |
pbrook | d597536 | 2008-06-07 20:50:51 +0000 | [diff] [blame] | 201 | void fork_start(void); |
| 202 | void fork_end(int child); |
bellard | 6977fbf | 2003-04-29 20:39:23 +0000 | [diff] [blame] | 203 | |
Meador Inge | dce1040 | 2012-07-26 16:50:01 +0000 | [diff] [blame] | 204 | /* Creates the initial guest address space in the host memory space using |
| 205 | * the given host start address hint and size. The guest_start parameter |
| 206 | * specifies the start address of the guest space. guest_base will be the |
| 207 | * difference between the host start address computed by this function and |
| 208 | * guest_start. If fixed is specified, then the mapped address space must |
| 209 | * start at host_start. The real start address of the mapped memory space is |
| 210 | * returned or -1 if there was an error. |
| 211 | */ |
| 212 | unsigned long init_guest_space(unsigned long host_start, |
| 213 | unsigned long host_size, |
| 214 | unsigned long guest_start, |
| 215 | bool fixed); |
| 216 | |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 217 | #include "qemu/log.h" |
bellard | 631271d | 2003-05-10 13:14:52 +0000 | [diff] [blame] | 218 | |
Richard Henderson | a05c640 | 2012-09-15 11:34:20 -0700 | [diff] [blame] | 219 | /* syscall.c */ |
| 220 | int host_to_target_waitstatus(int status); |
| 221 | |
ths | b92c47c | 2007-11-01 00:07:38 +0000 | [diff] [blame] | 222 | /* strace.c */ |
| 223 | void print_syscall(int num, |
bellard | c16f9ed | 2007-11-11 17:23:29 +0000 | [diff] [blame] | 224 | abi_long arg1, abi_long arg2, abi_long arg3, |
| 225 | abi_long arg4, abi_long arg5, abi_long arg6); |
| 226 | void print_syscall_ret(int num, abi_long arg1); |
ths | b92c47c | 2007-11-01 00:07:38 +0000 | [diff] [blame] | 227 | extern int do_strace; |
| 228 | |
bellard | b346ff4 | 2003-06-15 20:05:50 +0000 | [diff] [blame] | 229 | /* signal.c */ |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 230 | void process_pending_signals(CPUArchState *cpu_env); |
bellard | b346ff4 | 2003-06-15 20:05:50 +0000 | [diff] [blame] | 231 | void signal_init(void); |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 232 | int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info); |
Anthony Liguori | c227f09 | 2009-10-01 16:12:16 -0500 | [diff] [blame] | 233 | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info); |
| 234 | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo); |
pbrook | 4cb0596 | 2008-05-30 18:05:19 +0000 | [diff] [blame] | 235 | int target_to_host_signal(int sig); |
pbrook | 1d9d8b5 | 2009-04-16 15:17:02 +0000 | [diff] [blame] | 236 | int host_to_target_signal(int sig); |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 237 | long do_sigreturn(CPUArchState *env); |
| 238 | long do_rt_sigreturn(CPUArchState *env); |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 239 | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp); |
Alex Barcelo | 1c27592 | 2014-03-14 14:36:55 +0000 | [diff] [blame] | 240 | int do_sigprocmask(int how, const sigset_t *set, sigset_t *oldset); |
bellard | b346ff4 | 2003-06-15 20:05:50 +0000 | [diff] [blame] | 241 | |
| 242 | #ifdef TARGET_I386 |
bellard | 631271d | 2003-05-10 13:14:52 +0000 | [diff] [blame] | 243 | /* vm86.c */ |
| 244 | void save_v86_state(CPUX86State *env); |
bellard | 447db21 | 2003-05-10 15:10:36 +0000 | [diff] [blame] | 245 | void handle_vm86_trap(CPUX86State *env, int trapno); |
bellard | 631271d | 2003-05-10 13:14:52 +0000 | [diff] [blame] | 246 | void handle_vm86_fault(CPUX86State *env); |
blueswir1 | 992f48a | 2007-10-14 16:27:31 +0000 | [diff] [blame] | 247 | int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr); |
blueswir1 | 5bfb56b | 2007-10-05 17:01:51 +0000 | [diff] [blame] | 248 | #elif defined(TARGET_SPARC64) |
| 249 | void sparc64_set_context(CPUSPARCState *env); |
| 250 | void sparc64_get_context(CPUSPARCState *env); |
bellard | b346ff4 | 2003-06-15 20:05:50 +0000 | [diff] [blame] | 251 | #endif |
bellard | 631271d | 2003-05-10 13:14:52 +0000 | [diff] [blame] | 252 | |
bellard | 5493600 | 2003-05-13 00:25:15 +0000 | [diff] [blame] | 253 | /* mmap.c */ |
blueswir1 | 992f48a | 2007-10-14 16:27:31 +0000 | [diff] [blame] | 254 | int target_mprotect(abi_ulong start, abi_ulong len, int prot); |
| 255 | abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, |
| 256 | int flags, int fd, abi_ulong offset); |
| 257 | int target_munmap(abi_ulong start, abi_ulong len); |
| 258 | abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, |
| 259 | abi_ulong new_size, unsigned long flags, |
| 260 | abi_ulong new_addr); |
| 261 | int target_msync(abi_ulong start, abi_ulong len, int flags); |
pbrook | 0776590 | 2008-05-31 16:33:53 +0000 | [diff] [blame] | 262 | extern unsigned long last_brk; |
Peter Maydell | 59e9d91 | 2012-03-08 14:40:33 +0000 | [diff] [blame] | 263 | extern abi_ulong mmap_next_start; |
pbrook | c8a706f | 2008-06-02 16:16:42 +0000 | [diff] [blame] | 264 | void mmap_lock(void); |
| 265 | void mmap_unlock(void); |
Riku Voipio | 9ad197d | 2009-04-21 17:23:23 +0300 | [diff] [blame] | 266 | abi_ulong mmap_find_vma(abi_ulong, abi_ulong); |
pbrook | c276471 | 2009-03-07 15:24:59 +0000 | [diff] [blame] | 267 | void cpu_list_lock(void); |
| 268 | void cpu_list_unlock(void); |
pbrook | d597536 | 2008-06-07 20:50:51 +0000 | [diff] [blame] | 269 | void mmap_fork_start(void); |
| 270 | void mmap_fork_end(int child); |
bellard | 5493600 | 2003-05-13 00:25:15 +0000 | [diff] [blame] | 271 | |
blueswir1 | 440c7e8 | 2008-10-05 11:05:14 +0000 | [diff] [blame] | 272 | /* main.c */ |
Richard Henderson | 703e0e8 | 2010-03-19 14:21:13 -0700 | [diff] [blame] | 273 | extern unsigned long guest_stack_size; |
blueswir1 | 440c7e8 | 2008-10-05 11:05:14 +0000 | [diff] [blame] | 274 | |
bellard | edf779f | 2004-02-22 13:40:13 +0000 | [diff] [blame] | 275 | /* user access */ |
| 276 | |
| 277 | #define VERIFY_READ 0 |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 278 | #define VERIFY_WRITE 1 /* implies read access */ |
bellard | edf779f | 2004-02-22 13:40:13 +0000 | [diff] [blame] | 279 | |
bellard | dae3270 | 2007-11-14 10:51:00 +0000 | [diff] [blame] | 280 | static inline int access_ok(int type, abi_ulong addr, abi_ulong size) |
| 281 | { |
| 282 | return page_check_range((target_ulong)addr, size, |
| 283 | (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0; |
| 284 | } |
bellard | edf779f | 2004-02-22 13:40:13 +0000 | [diff] [blame] | 285 | |
Richard Henderson | 658f2dc | 2013-01-04 16:39:31 -0800 | [diff] [blame] | 286 | /* NOTE __get_user and __put_user use host pointers and don't check access. |
| 287 | These are usually used to access struct data members once the struct has |
| 288 | been locked - usually with lock_user_struct. */ |
bellard | edf779f | 2004-02-22 13:40:13 +0000 | [diff] [blame] | 289 | |
Richard Henderson | 658f2dc | 2013-01-04 16:39:31 -0800 | [diff] [blame] | 290 | /* Tricky points: |
| 291 | - Use __builtin_choose_expr to avoid type promotion from ?:, |
| 292 | - Invalid sizes result in a compile time error stemming from |
| 293 | the fact that abort has no parameters. |
| 294 | - It's easier to use the endian-specific unaligned load/store |
| 295 | functions than host-endian unaligned load/store plus tswapN. */ |
| 296 | |
| 297 | #define __put_user_e(x, hptr, e) \ |
| 298 | (__builtin_choose_expr(sizeof(*(hptr)) == 1, stb_p, \ |
| 299 | __builtin_choose_expr(sizeof(*(hptr)) == 2, stw_##e##_p, \ |
| 300 | __builtin_choose_expr(sizeof(*(hptr)) == 4, stl_##e##_p, \ |
| 301 | __builtin_choose_expr(sizeof(*(hptr)) == 8, stq_##e##_p, abort)))) \ |
Riku Voipio | a42267e | 2014-04-22 15:40:50 +0300 | [diff] [blame] | 302 | ((hptr), (x)), (void)0) |
Richard Henderson | 658f2dc | 2013-01-04 16:39:31 -0800 | [diff] [blame] | 303 | |
| 304 | #define __get_user_e(x, hptr, e) \ |
Peter Maydell | 0bc8ce9 | 2013-01-31 12:50:40 +0000 | [diff] [blame] | 305 | ((x) = (typeof(*hptr))( \ |
Richard Henderson | 658f2dc | 2013-01-04 16:39:31 -0800 | [diff] [blame] | 306 | __builtin_choose_expr(sizeof(*(hptr)) == 1, ldub_p, \ |
| 307 | __builtin_choose_expr(sizeof(*(hptr)) == 2, lduw_##e##_p, \ |
| 308 | __builtin_choose_expr(sizeof(*(hptr)) == 4, ldl_##e##_p, \ |
| 309 | __builtin_choose_expr(sizeof(*(hptr)) == 8, ldq_##e##_p, abort)))) \ |
Riku Voipio | a42267e | 2014-04-22 15:40:50 +0300 | [diff] [blame] | 310 | (hptr)), (void)0) |
Richard Henderson | 658f2dc | 2013-01-04 16:39:31 -0800 | [diff] [blame] | 311 | |
| 312 | #ifdef TARGET_WORDS_BIGENDIAN |
| 313 | # define __put_user(x, hptr) __put_user_e(x, hptr, be) |
| 314 | # define __get_user(x, hptr) __get_user_e(x, hptr, be) |
| 315 | #else |
| 316 | # define __put_user(x, hptr) __put_user_e(x, hptr, le) |
| 317 | # define __get_user(x, hptr) __get_user_e(x, hptr, le) |
| 318 | #endif |
bellard | edf779f | 2004-02-22 13:40:13 +0000 | [diff] [blame] | 319 | |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 320 | /* put_user()/get_user() take a guest address and check access */ |
| 321 | /* These are usually used to access an atomic data type, such as an int, |
| 322 | * that has been passed by address. These internally perform locking |
| 323 | * and unlocking on the data type. |
| 324 | */ |
| 325 | #define put_user(x, gaddr, target_type) \ |
| 326 | ({ \ |
| 327 | abi_ulong __gaddr = (gaddr); \ |
| 328 | target_type *__hptr; \ |
Riku Voipio | a42267e | 2014-04-22 15:40:50 +0300 | [diff] [blame] | 329 | abi_long __ret = 0; \ |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 330 | if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \ |
Riku Voipio | a42267e | 2014-04-22 15:40:50 +0300 | [diff] [blame] | 331 | __put_user((x), __hptr); \ |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 332 | unlock_user(__hptr, __gaddr, sizeof(target_type)); \ |
| 333 | } else \ |
| 334 | __ret = -TARGET_EFAULT; \ |
| 335 | __ret; \ |
bellard | edf779f | 2004-02-22 13:40:13 +0000 | [diff] [blame] | 336 | }) |
| 337 | |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 338 | #define get_user(x, gaddr, target_type) \ |
| 339 | ({ \ |
| 340 | abi_ulong __gaddr = (gaddr); \ |
| 341 | target_type *__hptr; \ |
Riku Voipio | a42267e | 2014-04-22 15:40:50 +0300 | [diff] [blame] | 342 | abi_long __ret = 0; \ |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 343 | if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \ |
Riku Voipio | a42267e | 2014-04-22 15:40:50 +0300 | [diff] [blame] | 344 | __get_user((x), __hptr); \ |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 345 | unlock_user(__hptr, __gaddr, 0); \ |
bellard | 2f61969 | 2007-11-16 10:46:05 +0000 | [diff] [blame] | 346 | } else { \ |
| 347 | /* avoid warning */ \ |
| 348 | (x) = 0; \ |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 349 | __ret = -TARGET_EFAULT; \ |
bellard | 2f61969 | 2007-11-16 10:46:05 +0000 | [diff] [blame] | 350 | } \ |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 351 | __ret; \ |
bellard | edf779f | 2004-02-22 13:40:13 +0000 | [diff] [blame] | 352 | }) |
| 353 | |
bellard | 2f61969 | 2007-11-16 10:46:05 +0000 | [diff] [blame] | 354 | #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong) |
| 355 | #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long) |
| 356 | #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t) |
| 357 | #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t) |
| 358 | #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t) |
| 359 | #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t) |
| 360 | #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t) |
| 361 | #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t) |
| 362 | #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t) |
| 363 | #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t) |
| 364 | |
| 365 | #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong) |
| 366 | #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long) |
| 367 | #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t) |
| 368 | #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t) |
| 369 | #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t) |
| 370 | #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t) |
| 371 | #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t) |
| 372 | #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t) |
| 373 | #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t) |
| 374 | #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t) |
| 375 | |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 376 | /* copy_from_user() and copy_to_user() are usually used to copy data |
| 377 | * buffers between the target and host. These internally perform |
| 378 | * locking/unlocking of the memory. |
| 379 | */ |
| 380 | abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len); |
| 381 | abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len); |
| 382 | |
pbrook | 53a5960 | 2006-03-25 19:31:22 +0000 | [diff] [blame] | 383 | /* Functions for accessing guest memory. The tget and tput functions |
Stefan Weil | 6f20f55 | 2013-09-12 19:57:15 +0200 | [diff] [blame] | 384 | read/write single values, byteswapping as necessary. The lock_user function |
pbrook | 53a5960 | 2006-03-25 19:31:22 +0000 | [diff] [blame] | 385 | gets a pointer to a contiguous area of guest memory, but does not perform |
Stefan Weil | 6f20f55 | 2013-09-12 19:57:15 +0200 | [diff] [blame] | 386 | any byteswapping. lock_user may return either a pointer to the guest |
pbrook | 53a5960 | 2006-03-25 19:31:22 +0000 | [diff] [blame] | 387 | memory, or a temporary buffer. */ |
| 388 | |
| 389 | /* Lock an area of guest memory into the host. If copy is true then the |
| 390 | host area will have the same contents as the guest. */ |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 391 | static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy) |
bellard | edf779f | 2004-02-22 13:40:13 +0000 | [diff] [blame] | 392 | { |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 393 | if (!access_ok(type, guest_addr, len)) |
| 394 | return NULL; |
pbrook | 53a5960 | 2006-03-25 19:31:22 +0000 | [diff] [blame] | 395 | #ifdef DEBUG_REMAP |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 396 | { |
| 397 | void *addr; |
| 398 | addr = malloc(len); |
| 399 | if (copy) |
| 400 | memcpy(addr, g2h(guest_addr), len); |
| 401 | else |
| 402 | memset(addr, 0, len); |
| 403 | return addr; |
| 404 | } |
pbrook | 53a5960 | 2006-03-25 19:31:22 +0000 | [diff] [blame] | 405 | #else |
| 406 | return g2h(guest_addr); |
| 407 | #endif |
bellard | edf779f | 2004-02-22 13:40:13 +0000 | [diff] [blame] | 408 | } |
| 409 | |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 410 | /* Unlock an area of guest memory. The first LEN bytes must be |
ths | 1235fc0 | 2008-06-03 19:51:57 +0000 | [diff] [blame] | 411 | flushed back to guest memory. host_ptr = NULL is explicitly |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 412 | allowed and does nothing. */ |
| 413 | static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, |
blueswir1 | 992f48a | 2007-10-14 16:27:31 +0000 | [diff] [blame] | 414 | long len) |
bellard | edf779f | 2004-02-22 13:40:13 +0000 | [diff] [blame] | 415 | { |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 416 | |
pbrook | 53a5960 | 2006-03-25 19:31:22 +0000 | [diff] [blame] | 417 | #ifdef DEBUG_REMAP |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 418 | if (!host_ptr) |
| 419 | return; |
| 420 | if (host_ptr == g2h(guest_addr)) |
pbrook | 53a5960 | 2006-03-25 19:31:22 +0000 | [diff] [blame] | 421 | return; |
| 422 | if (len > 0) |
balrog | 06177d3 | 2007-12-24 13:47:52 +0000 | [diff] [blame] | 423 | memcpy(g2h(guest_addr), host_ptr, len); |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 424 | free(host_ptr); |
pbrook | 53a5960 | 2006-03-25 19:31:22 +0000 | [diff] [blame] | 425 | #endif |
bellard | edf779f | 2004-02-22 13:40:13 +0000 | [diff] [blame] | 426 | } |
| 427 | |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 428 | /* Return the length of a string in target memory or -TARGET_EFAULT if |
| 429 | access error. */ |
| 430 | abi_long target_strlen(abi_ulong gaddr); |
bellard | edf779f | 2004-02-22 13:40:13 +0000 | [diff] [blame] | 431 | |
pbrook | 53a5960 | 2006-03-25 19:31:22 +0000 | [diff] [blame] | 432 | /* Like lock_user but for null terminated strings. */ |
blueswir1 | 992f48a | 2007-10-14 16:27:31 +0000 | [diff] [blame] | 433 | static inline void *lock_user_string(abi_ulong guest_addr) |
pbrook | 53a5960 | 2006-03-25 19:31:22 +0000 | [diff] [blame] | 434 | { |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 435 | abi_long len; |
| 436 | len = target_strlen(guest_addr); |
| 437 | if (len < 0) |
| 438 | return NULL; |
| 439 | return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1); |
pbrook | 53a5960 | 2006-03-25 19:31:22 +0000 | [diff] [blame] | 440 | } |
| 441 | |
Stefan Weil | 41d1af4 | 2013-09-12 19:57:41 +0200 | [diff] [blame] | 442 | /* Helper macros for locking/unlocking a target struct. */ |
bellard | 579a97f | 2007-11-11 14:26:47 +0000 | [diff] [blame] | 443 | #define lock_user_struct(type, host_ptr, guest_addr, copy) \ |
| 444 | (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy)) |
| 445 | #define unlock_user_struct(host_ptr, guest_addr, copy) \ |
pbrook | 53a5960 | 2006-03-25 19:31:22 +0000 | [diff] [blame] | 446 | unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0) |
| 447 | |
pbrook | c8a706f | 2008-06-02 16:16:42 +0000 | [diff] [blame] | 448 | #include <pthread.h> |
pbrook | c8a706f | 2008-06-02 16:16:42 +0000 | [diff] [blame] | 449 | |
Peter Maydell | dfeab06 | 2013-07-16 18:44:52 +0100 | [diff] [blame] | 450 | /* Include target-specific struct and function definitions; |
| 451 | * they may need access to the target-independent structures |
| 452 | * above, so include them last. |
| 453 | */ |
| 454 | #include "target_cpu.h" |
| 455 | #include "target_signal.h" |
Petar Jovanovic | 55a2b16 | 2013-10-30 14:46:31 +0100 | [diff] [blame] | 456 | #include "target_structs.h" |
Peter Maydell | dfeab06 | 2013-07-16 18:44:52 +0100 | [diff] [blame] | 457 | |
bellard | e88de09 | 2005-02-07 12:35:39 +0000 | [diff] [blame] | 458 | #endif /* QEMU_H */ |