| |
| /*--------------------------------------------------------------------*/ |
| /*--- A header file for all private parts of Valgrind's core. ---*/ |
| /*--- Include no other! ---*/ |
| /*--- vg_include.h ---*/ |
| /*--------------------------------------------------------------------*/ |
| |
| /* |
| This file is part of Valgrind, an extensible x86 protected-mode |
| emulator for monitoring program execution on x86-Unixes. |
| |
| Copyright (C) 2000-2003 Julian Seward |
| jseward@acm.org |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307, USA. |
| |
| The GNU General Public License is contained in the file COPYING. |
| */ |
| |
| #ifndef __VG_INCLUDE_H |
| #define __VG_INCLUDE_H |
| |
| /* --------------------------------------------------------------------- |
| Where to send bug reports to. |
| ------------------------------------------------------------------ */ |
| |
| #define VG_EMAIL_ADDR "jseward@acm.org" |
| |
| |
| /* --------------------------------------------------------------------- |
| Build options and table sizes. You should be able to change these |
| options or sizes, recompile, and still have a working system. |
| ------------------------------------------------------------------ */ |
| |
| #include "vg_constants.h" |
| |
| /* All stuff visible to core and skins goes in vg_skin.h. Things |
| * visible to core but not visible to any skins should go in this |
| * file, vg_include.h. */ |
| #include "vg_skin.h" |
| |
| /* Total number of spill slots available for allocation, if a TempReg |
| doesn't make it into a RealReg. Just bomb the entire system if |
| this value is too small; we don't expect it will ever get |
| particularly high. */ |
| #define VG_MAX_SPILLSLOTS 24 |
| |
| |
| /* Constants for the slow translation lookup cache. */ |
| #define VG_TRANSTAB_SLOW_BITS 11 |
| #define VG_TRANSTAB_SLOW_SIZE (1 << VG_TRANSTAB_SLOW_BITS) |
| #define VG_TRANSTAB_SLOW_MASK ((VG_TRANSTAB_SLOW_SIZE) - 1) |
| |
| /* Size of a buffer used for creating messages. */ |
| #define M_VG_MSGBUF 10000 |
| |
| /* Size of a smallish table used to read /proc/self/map entries. */ |
| #define M_PROCMAP_BUF 50000 |
| |
| /* Max length of pathname to a .so/executable file. */ |
| #define M_VG_LIBNAMESTR 100 |
| |
| /* Max length of a text fragment used to construct error messages. */ |
| #define M_VG_ERRTXT 512 |
| |
| /* Max length of the string copied from env var VG_ARGS at startup. */ |
| #define M_VG_CMDLINE_STRLEN 1000 |
| |
| /* Max number of options for Valgrind which we can handle. */ |
| #define M_VG_CMDLINE_OPTS 100 |
| |
| /* After this many different unsuppressed errors have been observed, |
| be more conservative about collecting new ones. */ |
| #define M_VG_COLLECT_ERRORS_SLOWLY_AFTER 50 |
| |
| /* After this many different unsuppressed errors have been observed, |
| stop collecting errors at all, and tell the user their program is |
| evidently a steaming pile of camel dung. */ |
| #define M_VG_COLLECT_NO_ERRORS_AFTER_SHOWN 300 |
| |
| /* After this many total errors have been observed, stop collecting |
| errors at all. Counterpart to M_VG_COLLECT_NO_ERRORS_AFTER_SHOWN. */ |
| #define M_VG_COLLECT_NO_ERRORS_AFTER_FOUND 30000 |
| |
| /* The maximum number of calls we're prepared to save in a |
| backtrace. */ |
| #define VG_DEEPEST_BACKTRACE 50 |
| |
| /* Number of lists in which we keep track of malloc'd but not free'd |
| blocks. Should be prime. */ |
| #define VG_N_MALLOCLISTS 997 |
| |
| /* Number of lists in which we keep track of ExeContexts. Should be |
| prime. */ |
| #define VG_N_EC_LISTS /*997*/ 4999 |
| |
| /* Defines the thread-scheduling timeslice, in terms of the number of |
| basic blocks we attempt to run each thread for. Smaller values |
| give finer interleaving but much increased scheduling overheads. */ |
| #define VG_SCHEDULING_QUANTUM 50000 |
| |
| /* Number of file descriptors that can simultaneously be waited on for |
| I/O to complete. Perhaps this should be the same as VG_N_THREADS |
| (surely a thread can't wait on more than one fd at once?. Who |
| knows.) */ |
| #define VG_N_WAITING_FDS 20 |
| |
| /* Stack size for a thread. We try and check that they do not go |
| beyond it. */ |
| #define VG_PTHREAD_STACK_SIZE (1 << 20) |
| |
| /* Number of entries in the semaphore-remapping table. */ |
| #define VG_N_SEMAPHORES 50 |
| |
| /* Number of entries in the rwlock-remapping table. */ |
| #define VG_N_RWLOCKS 500 |
| |
| /* Number of entries in each thread's cleanup stack. */ |
| #define VG_N_CLEANUPSTACK 16 |
| |
| /* Number of entries in each thread's fork-handler stack. */ |
| #define VG_N_FORKHANDLERSTACK 2 |
| |
| /* Max number of callers for context in a suppression. */ |
| #define VG_N_SUPP_CALLERS 4 |
| |
| /* Valgrind's stack sizes, in words */ |
| #define VG_STACK_SIZE_W 10000 |
| #define VG_SIGSTACK_SIZE_W 10000 |
| |
| |
| /* --------------------------------------------------------------------- |
| Basic types |
| ------------------------------------------------------------------ */ |
| |
| /* Just pray that gcc's constant folding works properly ... */ |
| #define BITS(bit7,bit6,bit5,bit4,bit3,bit2,bit1,bit0) \ |
| ( ((bit7) << 7) | ((bit6) << 6) | ((bit5) << 5) | ((bit4) << 4) \ |
| | ((bit3) << 3) | ((bit2) << 2) | ((bit1) << 1) | (bit0)) |
| |
| /* --------------------------------------------------------------------- |
| Command-line-settable options |
| ------------------------------------------------------------------ */ |
| |
| /* Default destination port to be used in logging over a network, if |
| none specified. */ |
| #define VG_CLO_DEFAULT_LOGPORT 1500 |
| |
| /* The max number of suppression files. */ |
| #define VG_CLO_MAX_SFILES 10 |
| |
| /* Describes where logging output is to be sent. */ |
| typedef |
| enum { |
| VgLogTo_Fd, |
| VgLogTo_File, |
| VgLogTo_Socket |
| } VgLogTo; |
| |
| |
| /* Should we stop collecting errors if too many appear? default: YES */ |
| extern Bool VG_(clo_error_limit); |
| /* Enquire about whether to attach to GDB at errors? default: NO */ |
| extern Bool VG_(clo_GDB_attach); |
| /* The path to GDB? default: whatever ./configure found */ |
| extern Char* VG_(clo_GDB_path); |
| /* Enquire about generating a suppression for each error? default: NO */ |
| extern Bool VG_(clo_gen_suppressions); |
| /* Sanity-check level: 0 = none, 1 (default), > 1 = expensive. */ |
| extern Int VG_(sanity_level); |
| /* Automatically attempt to demangle C++ names? default: YES */ |
| extern Bool VG_(clo_demangle); |
| /* Simulate child processes? default: NO */ |
| extern Bool VG_(clo_trace_children); |
| |
| /* Where logging output is to be sent to. |
| |
| When log_to == VgLogTo_Fd, clo_logfile_fd holds the file id, and is |
| taken from the command line. clo_logfile_name is irrelevant. |
| |
| When log_to == VgLogTo_File, clo_logfile_name holds the logfile |
| name, and is taken from the command line. clo_logfile_fd is then |
| made to hold the relevant file id, by opening clo_logfile_name |
| (concatenated with the process ID) for writing. |
| |
| When log_to == VgLogTo_Socket, clo_logfile_name holds the |
| hostname:portnumber pair, and is taken from the command line. |
| clo_logfile_fd is then made to hold the relevant file handle, by |
| opening a connection to said hostname:portnumber pair. |
| |
| Global default is to set log_to == VgLogTo_Fd and logfile_fd == 2 |
| (stderr). */ |
| extern VgLogTo VG_(clo_log_to); |
| extern Int VG_(clo_logfile_fd); |
| extern Char* VG_(clo_logfile_name); |
| |
| /* The file descriptor to read for input. default: 0 == stdin */ |
| extern Int VG_(clo_input_fd); |
| /* The number of suppression files specified. */ |
| extern Int VG_(clo_n_suppressions); |
| /* The names of the suppression files. */ |
| extern Char* VG_(clo_suppressions)[VG_CLO_MAX_SFILES]; |
| |
| /* Single stepping? default: NO */ |
| extern Bool VG_(clo_single_step); |
| /* Code improvement? default: YES */ |
| extern Bool VG_(clo_optimise); |
| /* DEBUG: print generated code? default: 00000 ( == NO ) */ |
| extern Bool VG_(clo_trace_codegen); |
| /* DEBUG: print system calls? default: NO */ |
| extern Bool VG_(clo_trace_syscalls); |
| /* DEBUG: print signal details? default: NO */ |
| extern Bool VG_(clo_trace_signals); |
| /* DEBUG: print symtab details? default: NO */ |
| extern Bool VG_(clo_trace_symtab); |
| /* DEBUG: print thread scheduling events? default: NO */ |
| extern Bool VG_(clo_trace_sched); |
| /* DEBUG: print pthread (mutex etc) events? default: 0 (none), 1 |
| (some), 2 (all) */ |
| extern Int VG_(clo_trace_pthread_level); |
| /* Stop after this many basic blocks. default: Infinity. */ |
| extern ULong VG_(clo_stop_after); |
| /* Display gory details for the k'th most popular error. default: |
| Infinity. */ |
| extern Int VG_(clo_dump_error); |
| /* Number of parents of a backtrace. Default: 8. */ |
| extern Int VG_(clo_backtrace_size); |
| /* Engage miscellaneous weird hacks needed for some progs. */ |
| extern Char* VG_(clo_weird_hacks); |
| /* Should we run __libc_freeres at exit? Sometimes causes crashes. |
| Default: YES. Note this is subservient to VG_(needs).libc_freeres; |
| if the latter says False, then the setting of VG_(clo_weird_hacks) |
| is ignored. Ie if a skin says no, I don't want this to run, that |
| cannot be overridden from the command line. */ |
| extern Bool VG_(clo_run_libc_freeres); |
| /* Use the basic-block chaining optimisation? Default: YES */ |
| extern Bool VG_(clo_chain_bb); |
| |
| |
| /* --------------------------------------------------------------------- |
| Debugging and profiling stuff |
| ------------------------------------------------------------------ */ |
| |
| /* Create a logfile into which messages can be dumped. */ |
| extern void VG_(startup_logging) ( void ); |
| extern void VG_(shutdown_logging)( void ); |
| |
| extern void VGP_(init_profiling) ( void ); |
| extern void VGP_(done_profiling) ( void ); |
| |
| #undef VGP_PUSHCC |
| #undef VGP_POPCC |
| #define VGP_PUSHCC(x) if (VG_(clo_profile)) VGP_(pushcc)(x) |
| #define VGP_POPCC(x) if (VG_(clo_profile)) VGP_(popcc)(x) |
| |
| /* --------------------------------------------------------------------- |
| Skin-related types |
| ------------------------------------------------------------------ */ |
| /* These structs are not exposed to skins to mitigate possibility of |
| binary-incompatibilities when the core/skin interface changes. Instead, |
| set functions are provided (see include/vg_skin.h). */ |
| typedef |
| struct { |
| Char* name; |
| Char* version; |
| Char* description; |
| Char* copyright_author; |
| Char* bug_reports_to; |
| UInt avg_translation_sizeB; |
| } |
| VgDetails; |
| |
| extern VgDetails VG_(details); |
| |
| /* If new fields are added to this type, update: |
| * - vg_main.c:initialisation of VG_(needs) |
| * - vg_main.c:sanity_check_needs() |
| * |
| * If the name of this type or any of its fields change, update: |
| * - dependent comments (just search for "VG_(needs)"). |
| */ |
| typedef |
| struct { |
| Bool libc_freeres; |
| Bool core_errors; |
| |
| Bool skin_errors; |
| Bool basic_block_discards; |
| Bool shadow_regs; |
| Bool command_line_options; |
| Bool client_requests; |
| Bool extended_UCode; |
| Bool syscall_wrapper; |
| Bool sanity_checks; |
| Bool data_syms; |
| } |
| VgNeeds; |
| |
| extern VgNeeds VG_(needs); |
| |
| /* Events happening in core to track. To be notified, assign a function |
| to the function pointer. To ignore an event, don't do anything |
| (default assignment is to NULL in which case the call is skipped). */ |
| typedef |
| struct { |
| /* Memory events */ |
| void (*new_mem_startup)( Addr a, UInt len, Bool rr, Bool ww, Bool xx ); |
| void (*new_mem_stack_signal) ( Addr a, UInt len ); |
| void (*new_mem_brk) ( Addr a, UInt len ); |
| void (*new_mem_mmap) ( Addr a, UInt len, Bool rr, Bool ww, Bool xx ); |
| |
| void (*copy_mem_remap) ( Addr from, Addr to, UInt len ); |
| void (*change_mem_mprotect) ( Addr a, UInt len, Bool rr, Bool ww, Bool xx ); |
| void (*die_mem_stack_signal) ( Addr a, UInt len ); |
| void (*die_mem_brk) ( Addr a, UInt len ); |
| void (*die_mem_munmap) ( Addr a, UInt len ); |
| |
| void (*new_mem_stack_4) ( Addr new_ESP ); |
| void (*new_mem_stack_8) ( Addr new_ESP ); |
| void (*new_mem_stack_12) ( Addr new_ESP ); |
| void (*new_mem_stack_16) ( Addr new_ESP ); |
| void (*new_mem_stack_32) ( Addr new_ESP ); |
| void (*new_mem_stack) ( Addr a, UInt len ); |
| |
| void (*die_mem_stack_4) ( Addr die_ESP ); |
| void (*die_mem_stack_8) ( Addr die_ESP ); |
| void (*die_mem_stack_12) ( Addr die_ESP ); |
| void (*die_mem_stack_16) ( Addr die_ESP ); |
| void (*die_mem_stack_32) ( Addr die_ESP ); |
| void (*die_mem_stack) ( Addr a, UInt len ); |
| |
| void (*ban_mem_stack) ( Addr a, UInt len ); |
| |
| void (*pre_mem_read) ( CorePart part, ThreadState* tst, |
| Char* s, Addr a, UInt size ); |
| void (*pre_mem_read_asciiz) ( CorePart part, ThreadState* tst, |
| Char* s, Addr a ); |
| void (*pre_mem_write) ( CorePart part, ThreadState* tst, |
| Char* s, Addr a, UInt size ); |
| /* Not implemented yet -- have to add in lots of places, which is a |
| pain. Won't bother unless/until there's a need. */ |
| /* void (*post_mem_read) ( ThreadState* tst, Char* s, |
| Addr a, UInt size ); */ |
| void (*post_mem_write) ( Addr a, UInt size ); |
| |
| |
| /* Register events */ |
| void (*post_regs_write_init) ( void ); |
| void (*post_reg_write_syscall_return) ( ThreadId tid, UInt reg ); |
| void (*post_reg_write_deliver_signal) ( ThreadId tid, UInt reg ); |
| void (*post_reg_write_pthread_return) ( ThreadId tid, UInt reg ); |
| void (*post_reg_write_clientreq_return) ( ThreadId tid, UInt reg ); |
| void (*post_reg_write_clientcall_return) ( ThreadId tid, UInt reg, |
| Addr f ); |
| |
| |
| /* Scheduler events (not exhaustive) */ |
| void (*thread_run) ( ThreadId tid ); |
| |
| |
| /* Thread events (not exhaustive) */ |
| void (*post_thread_create) ( ThreadId tid, ThreadId child ); |
| void (*post_thread_join) ( ThreadId joiner, ThreadId joinee ); |
| |
| |
| /* Mutex events (not exhaustive) */ |
| void (*pre_mutex_lock) ( ThreadId tid, |
| void* /*pthread_mutex_t* */ mutex ); |
| void (*post_mutex_lock) ( ThreadId tid, |
| void* /*pthread_mutex_t* */ mutex ); |
| void (*post_mutex_unlock) ( ThreadId tid, |
| void* /*pthread_mutex_t* */ mutex ); |
| |
| /* Signal events (not exhaustive) */ |
| void (* pre_deliver_signal) ( ThreadId tid, Int sigNo, Bool alt_stack ); |
| void (*post_deliver_signal) ( ThreadId tid, Int sigNo ); |
| |
| |
| /* Others... condition variable... */ |
| /* ... */ |
| } |
| VgTrackEvents; |
| |
| extern VgTrackEvents VG_(track_events); |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_needs.c |
| ------------------------------------------------------------------ */ |
| |
| void VG_(sanity_check_needs)(void); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_malloc2.c |
| ------------------------------------------------------------------ */ |
| |
| /* Allocation arenas. |
| |
| CORE for the core's general use. |
| SKIN for the skin to use (and the only one it uses). |
| SYMTAB for Valgrind's symbol table storage. |
| JITTER for small storage during translation. |
| CLIENT for the client's mallocs/frees, if the skin replaces glibc's |
| malloc() et al -- redzone size is chosen by the skin. |
| DEMANGLE for the C++ demangler. |
| EXECTXT for storing ExeContexts. |
| ERRORS for storing CoreErrors. |
| TRANSIENT for very short-term use. It should be empty in between uses. |
| |
| When adding a new arena, remember also to add it to ensure_mm_init(). |
| */ |
| typedef Int ArenaId; |
| |
| #define VG_N_ARENAS 9 |
| |
| #define VG_AR_CORE 0 |
| #define VG_AR_SKIN 1 |
| #define VG_AR_SYMTAB 2 |
| #define VG_AR_JITTER 3 |
| #define VG_AR_CLIENT 4 |
| #define VG_AR_DEMANGLE 5 |
| #define VG_AR_EXECTXT 6 |
| #define VG_AR_ERRORS 7 |
| #define VG_AR_TRANSIENT 8 |
| |
| extern void* VG_(arena_malloc) ( ArenaId arena, Int nbytes ); |
| extern void VG_(arena_free) ( ArenaId arena, void* ptr ); |
| extern void* VG_(arena_calloc) ( ArenaId arena, Int alignment, |
| Int nmemb, Int nbytes ); |
| extern void* VG_(arena_realloc) ( ArenaId arena, void* ptr, Int alignment, |
| Int size ); |
| extern void* VG_(arena_malloc_aligned) ( ArenaId aid, Int req_alignB, |
| Int req_pszB ); |
| |
| extern Int VG_(arena_payload_szB) ( ArenaId aid, void* payload ); |
| |
| extern void VG_(mallocSanityCheckAll) ( void ); |
| |
| extern void VG_(show_all_arena_stats) ( void ); |
| extern Bool VG_(is_empty_arena) ( ArenaId aid ); |
| |
| /* Returns True if aa is inside any block mmap'd /dev/zero |
| by our low-level memory manager. */ |
| extern Bool VG_(is_inside_segment_mmapd_by_low_level_MM)( Addr aa ); |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_intercept.c |
| ------------------------------------------------------------------ */ |
| |
| /* This doesn't export code or data that valgrind.so needs to link |
| against. However, the scheduler does need to know the following |
| request codes. A few, publically-visible, request codes are also |
| defined in valgrind.h, and similar headers for some skins. */ |
| |
| #define VG_USERREQ__MALLOC 0x2001 |
| #define VG_USERREQ__FREE 0x2002 |
| |
| /* |
| In vg_skin.h, so skins can use it. |
| Call an arbitrary function with ThreadState as the first arg. |
| #define VG_USERREQ__CLIENT_tstCALL0 0x2101 |
| #define VG_USERREQ__CLIENT_tstCALL1 0x2102 |
| #define VG_USERREQ__CLIENT_tstCALL2 0x2103 |
| #define VG_USERREQ__CLIENT_tstCALL3 0x2104 |
| */ |
| |
| /* (Fn, Arg): Create a new thread and run Fn applied to Arg in it. Fn |
| MUST NOT return -- ever. Eventually it will do either __QUIT or |
| __WAIT_JOINER. */ |
| #define VG_USERREQ__APPLY_IN_NEW_THREAD 0x3001 |
| |
| /* ( no-args ): calling thread disappears from the system forever. |
| Reclaim resources. */ |
| #define VG_USERREQ__QUIT 0x3002 |
| |
| /* ( void* ): calling thread waits for joiner and returns the void* to |
| it. */ |
| #define VG_USERREQ__WAIT_JOINER 0x3003 |
| |
| /* ( ThreadId, void** ): wait to join a thread. */ |
| #define VG_USERREQ__PTHREAD_JOIN 0x3004 |
| |
| /* Set cancellation state and type for this thread. */ |
| #define VG_USERREQ__SET_CANCELSTATE 0x3005 |
| #define VG_USERREQ__SET_CANCELTYPE 0x3006 |
| |
| /* ( no-args ): Test if we are at a cancellation point. */ |
| #define VG_USERREQ__TESTCANCEL 0x3007 |
| |
| /* ( ThreadId, &thread_exit_wrapper is the only allowable arg ): call |
| with this arg to indicate that a cancel is now pending for the |
| specified thread. */ |
| #define VG_USERREQ__SET_CANCELPEND 0x3008 |
| |
| /* Set/get detach state for this thread. */ |
| #define VG_USERREQ__SET_OR_GET_DETACH 0x3009 |
| |
| #define VG_USERREQ__PTHREAD_GET_THREADID 0x300B |
| #define VG_USERREQ__PTHREAD_MUTEX_LOCK 0x300C |
| #define VG_USERREQ__PTHREAD_MUTEX_TRYLOCK 0x300D |
| #define VG_USERREQ__PTHREAD_MUTEX_UNLOCK 0x300E |
| #define VG_USERREQ__PTHREAD_COND_WAIT 0x300F |
| #define VG_USERREQ__PTHREAD_COND_TIMEDWAIT 0x3010 |
| #define VG_USERREQ__PTHREAD_COND_SIGNAL 0x3011 |
| #define VG_USERREQ__PTHREAD_COND_BROADCAST 0x3012 |
| #define VG_USERREQ__PTHREAD_KEY_CREATE 0x3013 |
| #define VG_USERREQ__PTHREAD_KEY_DELETE 0x3014 |
| #define VG_USERREQ__PTHREAD_SETSPECIFIC_PTR 0x3015 |
| #define VG_USERREQ__PTHREAD_GETSPECIFIC_PTR 0x3016 |
| #define VG_USERREQ__READ_MILLISECOND_TIMER 0x3017 |
| #define VG_USERREQ__PTHREAD_SIGMASK 0x3018 |
| #define VG_USERREQ__SIGWAIT 0x3019 |
| #define VG_USERREQ__PTHREAD_KILL 0x301A |
| #define VG_USERREQ__PTHREAD_YIELD 0x301B |
| #define VG_USERREQ__PTHREAD_KEY_VALIDATE 0x301C |
| |
| #define VG_USERREQ__CLEANUP_PUSH 0x3020 |
| #define VG_USERREQ__CLEANUP_POP 0x3021 |
| #define VG_USERREQ__GET_KEY_D_AND_S 0x3022 |
| |
| #define VG_USERREQ__NUKE_OTHER_THREADS 0x3023 |
| |
| /* Ask how many signal handler returns have happened to this |
| thread. */ |
| #define VG_USERREQ__GET_N_SIGS_RETURNED 0x3024 |
| |
| /* Get/set entries for a thread's pthread_atfork stack. */ |
| #define VG_USERREQ__SET_FHSTACK_USED 0x3025 |
| #define VG_USERREQ__GET_FHSTACK_USED 0x3026 |
| #define VG_USERREQ__SET_FHSTACK_ENTRY 0x3027 |
| #define VG_USERREQ__GET_FHSTACK_ENTRY 0x3028 |
| |
| /* Denote the finish of VG_(__libc_freeres_wrapper). */ |
| #define VG_USERREQ__LIBC_FREERES_DONE 0x3029 |
| |
| /* Cosmetic ... */ |
| #define VG_USERREQ__GET_PTHREAD_TRACE_LEVEL 0x3101 |
| /* Log a pthread error from client-space. Cosmetic. */ |
| #define VG_USERREQ__PTHREAD_ERROR 0x3102 |
| |
| /* |
| In vg_constants.h: |
| #define VG_USERREQ__SIGNAL_RETURNS 0x4001 |
| */ |
| |
| |
| /* The scheduler does need to know the address of it so it can be |
| called at program exit. */ |
| extern void VG_(__libc_freeres_wrapper)( void ); |
| |
| extern void VGR_(wait_for_fd_to_be_readable_or_erring) ( int fd ); |
| extern void VGR_(wait_for_fd_to_be_writable_or_erring) ( int fd ); |
| |
| extern int VGR_(recv)(int s, void *buf, unsigned int/*size_t*/ len, |
| int flags); |
| |
| extern int VGR_(accept)(int s, /*struct sockaddr*/ void *addr, |
| /*socklen_t*/ void *addrlen); |
| |
| |
| extern int VGR_(select) ( int n, |
| /*fd_set*/ void *rfds, |
| /*fd_set*/ void *wfds, |
| /*fd_set*/ void *xfds, |
| /*struct timeval*/ void *timeout ); |
| |
| extern int VGR_(msgsnd)(int msgid, |
| const void *msgp, |
| /*size_t*/ unsigned int msgsz, |
| int msgflg); |
| |
| extern int VGR_(msgrcv)( int msqid, |
| void* msgp, |
| /*size_t*/ unsigned int msgsz, |
| long msgtyp, |
| int msgflg ); |
| |
| extern int VGR_(readv)(int fd, |
| const /*struct iovec*/ void *iovV, |
| int count); |
| |
| extern int VGR_(writev)(int fd, |
| const /*struct iovec*/ void *iovV, |
| int count); |
| |
| /* --------------------------------------------------------------------- |
| Constants pertaining to the simulated CPU state, VG_(baseBlock), |
| which need to go here to avoid ugly circularities. |
| ------------------------------------------------------------------ */ |
| |
| /* How big is the saved SSE/SSE2 state? Note that this subsumes the |
| FPU state. On machines without SSE, we just save/restore the FPU |
| state into the first part of this area. */ |
| /* A general comment about SSE save/restore: It appears that the 7th |
| word (which is the MXCSR) has to be &ed with 0x0000FFBF in order |
| that restoring from it later does not cause a GP fault (which is |
| delivered as a segfault). I guess this will have to be done |
| any time we do fxsave :-( 7th word means word offset 6 or byte |
| offset 24 from the start address of the save area. |
| */ |
| #define VG_SIZE_OF_SSESTATE 512 |
| /* ... and in words ... */ |
| #define VG_SIZE_OF_SSESTATE_W ((VG_SIZE_OF_SSESTATE+3)/4) |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_defaults.c |
| ------------------------------------------------------------------ */ |
| |
| extern Bool VG_(sk_malloc_called_by_scheduler); |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_ldt.c |
| ------------------------------------------------------------------ */ |
| |
| /* This is the hardware-format for a segment descriptor, ie what the |
| x86 actually deals with. It is 8 bytes long. It's ugly. */ |
| |
| typedef struct _LDT_ENTRY { |
| union { |
| struct { |
| UShort LimitLow; |
| UShort BaseLow; |
| unsigned BaseMid : 8; |
| unsigned Type : 5; |
| unsigned Dpl : 2; |
| unsigned Pres : 1; |
| unsigned LimitHi : 4; |
| unsigned Sys : 1; |
| unsigned Reserved_0 : 1; |
| unsigned Default_Big : 1; |
| unsigned Granularity : 1; |
| unsigned BaseHi : 8; |
| } Bits; |
| struct { |
| UInt word1; |
| UInt word2; |
| } Words; |
| } |
| LdtEnt; |
| } VgLdtEntry; |
| |
| /* Maximum number of LDT entries supported (by the x86). */ |
| #define VG_M_LDT_ENTRIES 8192 |
| /* The size of each LDT entry == sizeof(VgLdtEntry) */ |
| #define VG_LDT_ENTRY_SIZE 8 |
| |
| /* Alloc & copy, and dealloc. */ |
| extern VgLdtEntry* |
| VG_(allocate_LDT_for_thread) ( VgLdtEntry* parent_ldt ); |
| extern void |
| VG_(deallocate_LDT_for_thread) ( VgLdtEntry* ldt ); |
| |
| /* Simulate the modify_ldt syscall. */ |
| extern Int VG_(sys_modify_ldt) ( ThreadId tid, |
| Int func, void* ptr, UInt bytecount ); |
| |
| /* Called from generated code. Given a segment selector and a virtual |
| address, return a linear address, and do limit checks too. */ |
| extern Addr VG_(do_useseg) ( UInt seg_selector, Addr virtual_addr ); |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_scheduler.c |
| ------------------------------------------------------------------ */ |
| |
| typedef |
| enum { |
| VgTs_Empty, /* this slot is not in use */ |
| VgTs_Runnable, /* waiting to be scheduled */ |
| VgTs_WaitJoiner, /* waiting for someone to do join on me */ |
| VgTs_WaitJoinee, /* waiting for the thread I did join on */ |
| VgTs_WaitFD, /* waiting for I/O completion on a fd */ |
| VgTs_WaitMX, /* waiting on a mutex */ |
| VgTs_WaitCV, /* waiting on a condition variable */ |
| VgTs_WaitSIG, /* waiting due to sigwait() */ |
| VgTs_Sleeping /* sleeping for a while */ |
| } |
| ThreadStatus; |
| |
| /* An entry in a threads's cleanup stack. */ |
| typedef |
| struct { |
| void (*fn)(void*); |
| void* arg; |
| } |
| CleanupEntry; |
| |
| /* An entry in a thread's fork-handler stack. */ |
| typedef |
| struct { |
| void (*prepare)(void); |
| void (*parent)(void); |
| void (*child)(void); |
| } |
| ForkHandlerEntry; |
| |
| |
| struct _ThreadState { |
| /* ThreadId == 0 (and hence vg_threads[0]) is NEVER USED. |
| The thread identity is simply the index in vg_threads[]. |
| ThreadId == 1 is the root thread and has the special property |
| that we don't try and allocate or deallocate its stack. For |
| convenience of generating error message, we also put the |
| ThreadId in this tid field, but be aware that it should |
| ALWAYS == the index in vg_threads[]. */ |
| ThreadId tid; |
| |
| /* Current scheduling status. |
| |
| Complications: whenever this is set to VgTs_WaitMX, you |
| should also set .m_edx to whatever the required return value |
| is for pthread_mutex_lock / pthread_cond_timedwait for when |
| the mutex finally gets unblocked. */ |
| ThreadStatus status; |
| |
| /* When .status == WaitMX, points to the mutex I am waiting for. |
| When .status == WaitCV, points to the mutex associated with |
| the condition variable indicated by the .associated_cv field. |
| In all other cases, should be NULL. */ |
| void* /*pthread_mutex_t* */ associated_mx; |
| |
| /* When .status == WaitCV, points to the condition variable I am |
| waiting for. In all other cases, should be NULL. */ |
| void* /*pthread_cond_t* */ associated_cv; |
| |
| /* If VgTs_Sleeping, this is when we should wake up, measured in |
| milliseconds as supplied by VG_(read_millisecond_counter). |
| |
| If VgTs_WaitCV, this indicates the time at which |
| pthread_cond_timedwait should wake up. If == 0xFFFFFFFF, |
| this means infinitely far in the future, viz, |
| pthread_cond_wait. */ |
| UInt awaken_at; |
| |
| /* If VgTs_WaitJoiner, return value, as generated by joinees. */ |
| void* joinee_retval; |
| |
| /* If VgTs_WaitJoinee, place to copy the return value to, and |
| the identity of the thread we're waiting for. */ |
| void** joiner_thread_return; |
| ThreadId joiner_jee_tid; |
| |
| /* Whether or not detached. */ |
| Bool detached; |
| |
| /* Cancelability state and type. */ |
| Bool cancel_st; /* False==PTH_CANCEL_DISABLE; True==.._ENABLE */ |
| Bool cancel_ty; /* False==PTH_CANC_ASYNCH; True==..._DEFERRED */ |
| |
| /* Pointer to fn to call to do cancellation. Indicates whether |
| or not cancellation is pending. If NULL, not pending. Else |
| should be &thread_exit_wrapper(), indicating that |
| cancallation is pending. */ |
| void (*cancel_pend)(void*); |
| |
| /* The cleanup stack. */ |
| Int custack_used; |
| CleanupEntry custack[VG_N_CLEANUPSTACK]; |
| |
| /* A pointer to the thread's-specific-data. This is handled almost |
| entirely from vg_libpthread.c. We just provide hooks to get and |
| set this ptr. This is either NULL, indicating the thread has |
| read/written none of its specifics so far, OR points to a |
| void*[VG_N_THREAD_KEYS], allocated and deallocated in |
| vg_libpthread.c. */ |
| void** specifics_ptr; |
| |
| /* This thread's blocked-signals mask. Semantics is that for a |
| signal to be delivered to this thread, the signal must not be |
| blocked by either the process-wide signal mask nor by this |
| one. So, if this thread is prepared to handle any signal that |
| the process as a whole is prepared to handle, this mask should |
| be made empty -- and that it is its default, starting |
| state. */ |
| vki_ksigset_t sig_mask; |
| |
| /* When not VgTs_WaitSIG, has no meaning. When VgTs_WaitSIG, |
| is the set of signals for which we are sigwait()ing. */ |
| vki_ksigset_t sigs_waited_for; |
| |
| /* Counts the number of times a signal handler for this thread |
| has returned. This makes it easy to implement pause(), by |
| polling this value, of course interspersed with nanosleeps, |
| and waiting till it changes. */ |
| UInt n_signals_returned; |
| |
| /* Stacks. When a thread slot is freed, we don't deallocate its |
| stack; we just leave it lying around for the next use of the |
| slot. If the next use of the slot requires a larger stack, |
| only then is the old one deallocated and a new one |
| allocated. |
| |
| For the main thread (threadid == 0), this mechanism doesn't |
| apply. We don't know the size of the stack since we didn't |
| allocate it, and furthermore we never reallocate it. */ |
| |
| /* The allocated size of this thread's stack (permanently zero |
| if this is ThreadId == 0, since we didn't allocate its stack) */ |
| UInt stack_size; |
| |
| /* Address of the lowest word in this thread's stack. NULL means |
| not allocated yet. |
| */ |
| Addr stack_base; |
| |
| /* Address of the highest legitimate word in this stack. This is |
| used for error messages only -- not critical for execution |
| correctness. Is is set for all stacks, specifically including |
| ThreadId == 0 (the main thread). */ |
| Addr stack_highest_word; |
| |
| /* Pointer to this thread's Local (Segment) Descriptor Table. |
| Starts out as NULL, indicating there is no table, and we hope to |
| keep it that way. If the thread does __NR_modify_ldt to create |
| entries, we allocate a 8192-entry table at that point. This is |
| a straight copy of the Linux kernel's scheme. Don't forget to |
| deallocate this at thread exit. */ |
| VgLdtEntry* ldt; |
| |
| /* Saved machine context. Note the FPU state, %EIP and segment |
| registers are not shadowed. |
| |
| Although the segment registers are 16 bits long, storage |
| management here, in VG_(baseBlock) and in VG_(m_state_static) is |
| simplified if we pretend they are 32 bits. */ |
| UInt m_cs; |
| UInt m_ss; |
| UInt m_ds; |
| UInt m_es; |
| UInt m_fs; |
| UInt m_gs; |
| |
| UInt m_eax; |
| UInt m_ebx; |
| UInt m_ecx; |
| UInt m_edx; |
| UInt m_esi; |
| UInt m_edi; |
| UInt m_ebp; |
| UInt m_esp; |
| UInt m_eflags; |
| UInt m_eip; |
| |
| /* The SSE/FPU state. This array does not (necessarily) have the |
| required 16-byte alignment required to get stuff in/out by |
| fxsave/fxrestore. So we have to do it "by hand". |
| */ |
| UInt m_sse[VG_SIZE_OF_SSESTATE_W]; |
| |
| UInt sh_eax; |
| UInt sh_ebx; |
| UInt sh_ecx; |
| UInt sh_edx; |
| UInt sh_esi; |
| UInt sh_edi; |
| UInt sh_ebp; |
| UInt sh_esp; |
| UInt sh_eflags; |
| }; |
| |
| |
| /* The thread table. */ |
| extern ThreadState VG_(threads)[VG_N_THREADS]; |
| |
| /* Check that tid is in range and denotes a non-Empty thread. */ |
| extern Bool VG_(is_valid_tid) ( ThreadId tid ); |
| |
| /* Check that tid is in range. */ |
| extern Bool VG_(is_valid_or_empty_tid) ( ThreadId tid ); |
| |
| /* Copy the specified thread's state into VG_(baseBlock) in |
| preparation for running it. */ |
| extern void VG_(load_thread_state)( ThreadId ); |
| |
| /* Save the specified thread's state back in VG_(baseBlock), and fill |
| VG_(baseBlock) with junk, for sanity-check reasons. */ |
| extern void VG_(save_thread_state)( ThreadId ); |
| |
| /* And for the currently running one, if valid. */ |
| extern ThreadState* VG_(get_current_thread_state) ( void ); |
| |
| /* Similarly ... */ |
| extern ThreadId VG_(get_current_tid) ( void ); |
| |
| /* Nuke all threads except tid. */ |
| extern void VG_(nuke_all_threads_except) ( ThreadId me ); |
| |
| |
| /* Return codes from the scheduler. */ |
| typedef |
| enum { |
| VgSrc_Deadlock, /* no runnable threads and no prospect of any |
| even if we wait for a long time */ |
| VgSrc_ExitSyscall, /* client called exit(). This is the normal |
| route out. */ |
| VgSrc_BbsDone /* In a debugging run, the specified number of |
| bbs has been completed. */ |
| } |
| VgSchedReturnCode; |
| |
| |
| /* The scheduler. */ |
| extern VgSchedReturnCode VG_(scheduler) ( void ); |
| |
| extern void VG_(scheduler_init) ( void ); |
| |
| extern void VG_(pp_sched_status) ( void ); |
| |
| /* vg_oursignalhandler() might longjmp(). Here's the jmp_buf. */ |
| extern jmp_buf VG_(scheduler_jmpbuf); |
| /* This says whether scheduler_jmpbuf is actually valid. Needed so |
| that our signal handler doesn't longjmp when the buffer isn't |
| actually valid. */ |
| extern Bool VG_(scheduler_jmpbuf_valid); |
| /* ... and if so, here's the signal which caused it to do so. */ |
| extern Int VG_(longjmpd_on_signal); |
| |
| |
| /* The red-zone size which we put at the bottom (highest address) of |
| thread stacks, for paranoia reasons. This can be arbitrary, and |
| doesn't really need to be set at compile time. */ |
| #define VG_AR_CLIENT_STACKBASE_REDZONE_SZW 4 |
| |
| #define VG_AR_CLIENT_STACKBASE_REDZONE_SZB \ |
| (VG_AR_CLIENT_STACKBASE_REDZONE_SZW * VKI_BYTES_PER_WORD) |
| |
| /* Junk to fill up a thread's shadow regs with when shadow regs aren't |
| being used. */ |
| #define VG_UNUSED_SHADOW_REG_VALUE 0x27182818 |
| /* For sanity checking: if this ends up in a thread's shadow regs when |
| shadow regs aren't being used, something went wrong. */ |
| #define VG_USED_SHADOW_REG_VALUE 0x31415927 |
| |
| /* Write a value to a client's thread register, and shadow (if necessary) */ |
| #define SET_THREAD_REG( zztid, zzval, zzreg, zzREG, zzevent, zzargs... ) \ |
| do { VG_(threads)[zztid].m_##zzreg = (zzval); \ |
| VG_TRACK( zzevent, zztid, R_##zzREG, ##zzargs ); \ |
| } while (0) |
| |
| #define SET_SYSCALL_RETVAL(zztid, zzval) \ |
| SET_THREAD_REG(zztid, zzval, eax, EAX, post_reg_write_syscall_return) |
| |
| #define SET_SIGNAL_EDX(zztid, zzval) \ |
| SET_THREAD_REG(zztid, zzval, edx, EDX, post_reg_write_deliver_signal) |
| |
| #define SET_SIGNAL_ESP(zztid, zzval) \ |
| SET_THREAD_REG(zztid, zzval, esp, ESP, post_reg_write_deliver_signal) |
| |
| #define SET_CLREQ_RETVAL(zztid, zzval) \ |
| SET_THREAD_REG(zztid, zzval, edx, EDX, post_reg_write_clientreq_return) |
| |
| #define SET_CLCALL_RETVAL(zztid, zzval, f) \ |
| SET_THREAD_REG(zztid, zzval, edx, EDX, post_reg_write_clientcall_return, f) |
| |
| #define SET_PTHREQ_ESP(zztid, zzval) \ |
| SET_THREAD_REG(zztid, zzval, esp, ESP, post_reg_write_pthread_return) |
| |
| #define SET_PTHREQ_RETVAL(zztid, zzval) \ |
| SET_THREAD_REG(zztid, zzval, edx, EDX, post_reg_write_pthread_return) |
| |
| |
| /* This is or'd into a pthread mutex's __m_kind field if it is used |
| before Valgrind is up and running (prehistory). This is used so |
| that if some early code (like the dynamic linker) takes a lock |
| before Valgrind starts and then releases it afterwards, we can work |
| out what's happening. */ |
| #define VG_PTHREAD_PREHISTORY 0x80000000 |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_signals.c |
| ------------------------------------------------------------------ */ |
| |
| extern void VG_(sigstartup_actions) ( void ); |
| extern void VG_(sigshutdown_actions) ( void ); |
| |
| extern Bool VG_(deliver_signals) ( void ); |
| extern void VG_(unblock_host_signal) ( Int sigNo ); |
| extern void VG_(handle_SCSS_change) ( Bool force_update ); |
| |
| |
| /* Fake system calls for signal handling. */ |
| extern void VG_(do__NR_sigaltstack) ( ThreadId tid ); |
| extern void VG_(do__NR_sigaction) ( ThreadId tid ); |
| extern void VG_(do__NR_sigprocmask) ( ThreadId tid, |
| Int how, |
| vki_ksigset_t* set, |
| vki_ksigset_t* oldset ); |
| extern void VG_(do_pthread_sigmask_SCSS_upd) ( ThreadId tid, |
| Int how, |
| vki_ksigset_t* set, |
| vki_ksigset_t* oldset ); |
| extern void VG_(send_signal_to_thread) ( ThreadId thread, |
| Int signo ); |
| |
| extern void VG_(do_sigpending) ( ThreadId tid, vki_ksigset_t* set ); |
| |
| |
| /* Modify the current thread's state once we have detected it is |
| returning from a signal handler. */ |
| extern Bool VG_(signal_returns) ( ThreadId ); |
| |
| /* Handy utilities to block/restore all host signals. */ |
| extern void VG_(block_all_host_signals) |
| ( /* OUT */ vki_ksigset_t* saved_mask ); |
| extern void VG_(restore_all_host_signals) |
| ( /* IN */ vki_ksigset_t* saved_mask ); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_mylibc.c |
| ------------------------------------------------------------------ */ |
| |
| #define vg_assert(expr) \ |
| ((void) ((expr) ? 0 : \ |
| (VG_(core_assert_fail) (VG__STRING(expr), \ |
| __FILE__, __LINE__, \ |
| __PRETTY_FUNCTION__), 0))) |
| __attribute__ ((__noreturn__)) |
| extern void VG_(core_assert_fail) ( Char* expr, Char* file, |
| Int line, Char* fn ); |
| __attribute__ ((__noreturn__)) |
| extern void VG_(core_panic) ( Char* str ); |
| |
| /* VG_(brk) not public so skins cannot screw with curr_dataseg_end */ |
| extern void* VG_(brk) ( void* end_data_segment ); |
| |
| /* Skins use VG_(strdup)() which doesn't expose ArenaId */ |
| extern Char* VG_(arena_strdup) ( ArenaId aid, const Char* s); |
| |
| /* Skins shouldn't need these...(?) */ |
| extern void VG_(start_rdtsc_calibration) ( void ); |
| extern void VG_(end_rdtsc_calibration) ( void ); |
| extern UInt VG_(read_millisecond_timer) ( void ); |
| |
| extern Int VG_(fcntl) ( Int fd, Int cmd, Int arg ); |
| extern Int VG_(select)( Int n, |
| vki_fd_set* readfds, |
| vki_fd_set* writefds, |
| vki_fd_set* exceptfds, |
| struct vki_timeval * timeout ); |
| extern Int VG_(nanosleep)( const struct vki_timespec *req, |
| struct vki_timespec *rem ); |
| |
| extern Int VG_(write_socket)( Int sd, void *msg, Int count ); |
| |
| /* --- Connecting over the network --- */ |
| extern Int VG_(connect_via_socket)( UChar* str ); |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_message.c |
| ------------------------------------------------------------------ */ |
| |
| /* Low-level -- send bytes directly to the message sink. Do not |
| use. */ |
| extern void VG_(send_bytes_to_logging_sink) ( Char* msg, Int nbytes ); |
| |
| |
| /* --------------------------------------------------------------------- |
| Definitions for the JITter (vg_translate.c, vg_to_ucode.c, |
| vg_from_ucode.c). |
| ------------------------------------------------------------------ */ |
| |
| #define VG_IS_FLAG_SUBSET(set1,set2) \ |
| (( ((FlagSet)set1) & ((FlagSet)set2) ) == ((FlagSet)set1) ) |
| |
| #define VG_UNION_FLAG_SETS(set1,set2) \ |
| ( ((FlagSet)set1) | ((FlagSet)set2) ) |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_demangle.c |
| ------------------------------------------------------------------ */ |
| |
| extern void VG_(demangle) ( Char* orig, Char* result, Int result_size ); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_from_ucode.c |
| ------------------------------------------------------------------ */ |
| |
| extern UChar* VG_(emit_code) ( UCodeBlock* cb, Int* nbytes, UShort jumps[VG_MAX_JUMPS] ); |
| |
| extern void VG_(print_ccall_stats) ( void ); |
| extern void VG_(print_UInstr_histogram) ( void ); |
| |
| extern void VG_(unchain_jumpsite) ( Addr jumpsite ); |
| extern Addr VG_(get_jmp_dest) ( Addr jumpsite ); |
| extern Bool VG_(is_unchained_jumpsite) ( Addr jumpsite ); |
| extern Bool VG_(is_chained_jumpsite) ( Addr jumpsite ); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_to_ucode.c |
| ------------------------------------------------------------------ */ |
| |
| extern Int VG_(disBB) ( UCodeBlock* cb, Addr eip0 ); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_translate.c |
| ------------------------------------------------------------------ */ |
| |
| /* Expandable arrays of uinstrs. */ |
| struct _UCodeBlock { |
| Addr orig_eip; |
| Int used; |
| Int size; |
| UInstr* instrs; |
| Int nextTemp; |
| }; |
| |
| extern UCodeBlock* VG_(alloc_UCodeBlock) ( void ); |
| |
| extern void VG_(translate) ( ThreadState* tst, |
| Addr orig_addr, |
| UInt* orig_size, |
| Addr* trans_addr, |
| UInt* trans_size, |
| UShort jumps[VG_MAX_JUMPS]); |
| |
| extern Bool VG_(saneUInstr) ( Bool beforeRA, Bool beforeLiveness, |
| UInstr* u ); |
| extern void VG_(saneUCodeBlock) ( UCodeBlock* cb ); |
| extern Bool VG_(saneUCodeBlockCalls) ( UCodeBlock* cb ); |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_execontext.c. |
| ------------------------------------------------------------------ */ |
| |
| /* Records the PC and a bit of the call chain. The first 4 %eip |
| values are used in comparisons do remove duplicate errors, and for |
| comparing against suppression specifications. The rest are purely |
| informational (but often important). */ |
| |
| struct _ExeContext { |
| struct _ExeContext * next; |
| /* Variable-length array. The size is VG_(clo_backtrace_size); at |
| least 2, at most VG_DEEPEST_BACKTRACE. [0] is the current %eip, |
| [1] is its caller, [2] is the caller of [1], etc. */ |
| Addr eips[0]; |
| }; |
| |
| |
| /* Print stats (informational only). */ |
| extern void VG_(show_ExeContext_stats) ( void ); |
| |
| /* Like VG_(get_ExeContext), but with a slightly different type */ |
| extern ExeContext* VG_(get_ExeContext2) ( Addr eip, Addr ebp, |
| Addr ebp_min, Addr ebp_max ); |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_errcontext.c. |
| ------------------------------------------------------------------ */ |
| |
| /* Note: it is imperative this doesn't overlap with (0..) at all, as skins |
| * effectively extend it by defining their own enums in the (0..) range. */ |
| typedef |
| enum { |
| PThreadSupp = -1, /* Matches PThreadErr */ |
| } |
| CoreSuppKind; |
| |
| /* For each caller specified for a suppression, record the nature of |
| the caller name. Not of interest to skins. */ |
| typedef |
| enum { |
| ObjName, /* Name is of an shared object file. */ |
| FunName /* Name is of a function. */ |
| } |
| SuppLocTy; |
| |
| /* Suppressions. Skins can get/set skin-relevant parts with functions |
| declared in include/vg_skin.h. Extensible via the 'extra' field. |
| Skins can use a normal enum (with element values in the normal range |
| (0..)) for `skind'. */ |
| struct _Supp { |
| struct _Supp* next; |
| /* The number of times this error has been suppressed. */ |
| Int count; |
| /* The name by which the suppression is referred to. */ |
| Char* sname; |
| /* First two (name of fn where err occurs, and immediate caller) |
| * are mandatory; extra two are optional. */ |
| SuppLocTy caller_ty[VG_N_SUPP_CALLERS]; |
| Char* caller [VG_N_SUPP_CALLERS]; |
| |
| /* The skin-specific part */ |
| /* What kind of suppression. Must use the range (0..) */ |
| SuppKind skind; |
| /* String -- use is optional. NULL by default. */ |
| Char* string; |
| /* Anything else -- use is optional. NULL by default. */ |
| void* extra; |
| }; |
| |
| /* Note: it is imperative this doesn't overlap with (0..) at all, as skins |
| * effectively extend it by defining their own enums in the (0..) range. */ |
| typedef |
| enum { |
| PThreadErr = -1, /* Pthreading error */ |
| } |
| CoreErrorKind; |
| |
| /* Errors. Extensible (via the 'extra' field). Skins can use a normal |
| enum (with element values in the normal range (0..)) for `ekind'. |
| Functions for getting/setting the skin-relevant fields are in |
| include/vg_skin.h. |
| |
| When errors are found and recorded with VG_(maybe_record_error)(), all |
| the skin must do is pass in the four parameters; core will |
| allocate/initialise the error record. |
| */ |
| struct _Error { |
| struct _Error* next; |
| /* NULL if unsuppressed; or ptr to suppression record. */ |
| Supp* supp; |
| Int count; |
| ThreadId tid; |
| |
| /* The skin-specific part */ |
| /* Initialised by core */ |
| ExeContext* where; |
| /* Used by ALL. Must be in the range (0..) */ |
| Int ekind; |
| /* Used frequently */ |
| Addr addr; |
| /* Used frequently */ |
| Char* string; |
| /* For any skin-specific extras */ |
| void* extra; |
| }; |
| |
| |
| extern void VG_(load_suppressions) ( void ); |
| |
| extern void VG_(record_pthread_error) ( ThreadId tid, Char* msg ); |
| |
| extern void VG_(show_all_errors) ( void ); |
| |
| extern Bool VG_(is_action_requested) ( Char* action, Bool* clo ); |
| |
| extern void VG_(gen_suppression) ( Error* err ); |
| |
| extern UInt VG_(n_errs_found); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_procselfmaps.c |
| ------------------------------------------------------------------ */ |
| |
| /* Reads /proc/self/maps into a static buffer. */ |
| void VG_(read_procselfmaps_contents) ( void ); |
| |
| /* Parses /proc/self/maps, calling `record_mapping' for each entry. If |
| `read_from_file' is True, /proc/self/maps is read directly, otherwise |
| it's read from the buffer filled by VG_(read_procselfmaps_contents)(). */ |
| extern |
| void VG_(read_procselfmaps) ( |
| void (*record_mapping)( Addr, UInt, Char, Char, Char, UInt, UChar* ), |
| Bool read_from_file |
| ); |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_symtab2.c |
| ------------------------------------------------------------------ */ |
| |
| extern void VG_(read_symbols) ( void ); |
| extern void VG_(read_symtab_callback) ( Addr start, UInt size, |
| Char rr, Char ww, Char xx, |
| UInt foffset, UChar* filename ); |
| extern void VG_(unload_symbols) ( Addr start, UInt length ); |
| |
| extern Bool VG_(get_fnname_nodemangle)( Addr a, Char* fnname, Int n_fnname ); |
| extern void VG_(mini_stack_dump) ( ExeContext* ec ); |
| extern Int VG_(setup_code_redirect_table) ( void ); |
| |
| typedef |
| struct { |
| Addr entry_pt_orig; |
| Addr entry_pt_subst; |
| } |
| CodeRedirect; |
| |
| #define VG_N_CODE_REDIRECTS 10 |
| extern CodeRedirect VG_(code_redirect_table)[VG_N_CODE_REDIRECTS]; |
| /* Table is terminated by a NULL entry_pt_orig field. */ |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_main.c |
| ------------------------------------------------------------------ */ |
| |
| /* Is this a SSE/SSE2-capable CPU? If so, we had better save/restore |
| the SSE state all over the place. This is set up very early, in |
| vg_startup.S. We have to determine it early since we can't even |
| correctly snapshot the startup machine state without it. */ |
| extern Bool VG_(have_ssestate); |
| |
| /* Tell the logging mechanism whether we are logging to a file |
| descriptor or a socket descriptor. */ |
| extern Bool VG_(logging_to_filedes); |
| |
| /* Sanity checks which may be done at any time. The scheduler decides when. */ |
| extern void VG_(do_sanity_checks) ( Bool force_expensive ); |
| |
| /* A structure used as an intermediary when passing the simulated |
| CPU's state to some assembly fragments, particularly system calls. |
| Stuff is copied from baseBlock to here, the assembly magic runs, |
| and then the inverse copy is done. Alignment: the SSE state must |
| be 16-byte aligned. We ask for the whole struct to be 16-byte |
| aligned, and the SSE state starts at the 6+8+1+1th == 16th word, |
| so it too must be 16-byte aligned. Consequence: change this struct |
| only _very carefully_ ! See also above comment re masking MXCSR. |
| */ |
| __attribute__ ((aligned (16))) |
| extern UInt VG_(m_state_static) [6 /* segment regs, Intel order */ |
| + 8 /* int regs, in Intel order */ |
| + 1 /* %eflags */ |
| + 1 /* %eip */ |
| + VG_SIZE_OF_SSESTATE_W /* SSE state */ |
| ]; |
| |
| /* Handy fns for doing the copy back and forth. */ |
| extern void VG_(copy_baseBlock_to_m_state_static) ( void ); |
| extern void VG_(copy_m_state_static_to_baseBlock) ( void ); |
| |
| /* Determine if %esp adjustment must be noted */ |
| extern Bool VG_(need_to_handle_esp_assignment) ( void ); |
| |
| /* Called when some unhandleable client behaviour is detected. |
| Prints a msg and aborts. */ |
| extern void VG_(unimplemented) ( Char* msg ) |
| __attribute__((__noreturn__)); |
| |
| /* The stack on which Valgrind runs. We can't use the same stack as the |
| simulatee -- that's an important design decision. */ |
| extern UInt VG_(stack)[VG_STACK_SIZE_W]; |
| |
| /* Similarly, we have to ask for signals to be delivered on an alternative |
| stack, since it is possible, although unlikely, that we'll have to run |
| client code from inside the Valgrind-installed signal handler. If this |
| happens it will be done by vg_deliver_signal_immediately(). */ |
| extern UInt VG_(sigstack)[VG_SIGSTACK_SIZE_W]; |
| |
| /* Holds client's %esp at the point we gained control. From this the |
| client's argc, argv and envp are deduced. */ |
| extern Addr VG_(esp_at_startup); |
| |
| /* Indicates presence, and holds address of client's sysinfo page, a |
| feature of some modern kernels used to provide vsyscalls, etc. */ |
| extern Bool VG_(sysinfo_page_exists); |
| extern Addr VG_(sysinfo_page_addr); |
| |
| /* Remove valgrind.so and skin's .so from a LD_PRELOAD=... string so child |
| processes don't get traced into. Also mess up $libdir/valgrind so that |
| our libpthread.so disappears from view. */ |
| void VG_(mash_LD_PRELOAD_and_LD_LIBRARY_PATH) ( Char* ld_preload_str, |
| Char* ld_library_path_str ); |
| |
| /* Something of a function looking for a home ... start up GDB. This |
| is called from VG_(swizzle_esp_then_start_GDB) and so runs on the |
| *client's* stack. This is necessary to give GDB the illusion that |
| the client program really was running on the real cpu. */ |
| extern void VG_(start_GDB_whilst_on_client_stack) ( void ); |
| |
| /* VG_(bbs_done) in include/vg_skin.h */ |
| |
| /* 64-bit counter for the number of bbs to go before a debug exit. */ |
| extern ULong VG_(bbs_to_go); |
| |
| /* Counts downwards in vg_run_innerloop. */ |
| extern UInt VG_(dispatch_ctr); |
| |
| /* Is the client running on the simulated CPU or the real one? */ |
| extern Bool VG_(running_on_simd_CPU); /* Initially False */ |
| |
| /* This is the ThreadId of the last thread the scheduler ran. */ |
| extern ThreadId VG_(last_run_tid); |
| |
| /* This is the argument to __NR_exit() supplied by the first thread to |
| call that syscall. We eventually pass that to __NR_exit() for |
| real. */ |
| extern Int VG_(exitcode); |
| |
| |
| /* --- Counters, for informational purposes only. --- */ |
| |
| /* Number of lookups which miss the fast tt helper. */ |
| extern UInt VG_(tt_fast_misses); |
| |
| /* Counts for TT/TC informational messages. */ |
| |
| /* Number and total o/t size of translations overall. */ |
| extern UInt VG_(overall_in_count); |
| extern UInt VG_(overall_in_osize); |
| extern UInt VG_(overall_in_tsize); |
| /* Number and total o/t size of discards overall. */ |
| extern UInt VG_(overall_out_count); |
| extern UInt VG_(overall_out_osize); |
| extern UInt VG_(overall_out_tsize); |
| /* The number of discards of TT/TC. */ |
| extern UInt VG_(number_of_tc_discards); |
| /* Counts of chain and unchain operations done. */ |
| extern UInt VG_(bb_enchain_count); |
| extern UInt VG_(bb_dechain_count); |
| /* Number of unchained jumps performed. */ |
| extern UInt VG_(unchained_jumps_done); |
| |
| |
| /* Counts pertaining to the register allocator. */ |
| |
| /* total number of uinstrs input to reg-alloc */ |
| extern UInt VG_(uinstrs_prealloc); |
| |
| /* total number of uinstrs added due to spill code */ |
| extern UInt VG_(uinstrs_spill); |
| |
| /* number of bbs requiring spill code */ |
| extern UInt VG_(translations_needing_spill); |
| |
| /* total of register ranks over all translations */ |
| extern UInt VG_(total_reg_rank); |
| |
| /* Counts pertaining to internal sanity checking. */ |
| extern UInt VG_(sanity_fast_count); |
| extern UInt VG_(sanity_slow_count); |
| |
| /* Counts pertaining to the scheduler. */ |
| extern UInt VG_(num_scheduling_events_MINOR); |
| extern UInt VG_(num_scheduling_events_MAJOR); |
| |
| /* Insert and extract the D flag from eflags */ |
| UInt VG_(insertDflag)(UInt eflags, Int d); |
| Int VG_(extractDflag)(UInt eflags); |
| |
| /* start address and size of the initial stack */ |
| extern Addr VG_(foundstack_start); |
| extern UInt VG_(foundstack_size); |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_memory.c |
| ------------------------------------------------------------------ */ |
| |
| extern void VG_(init_memory) ( void ); |
| extern void VG_(new_exe_segment) ( Addr a, UInt len ); |
| extern void VG_(remove_if_exe_segment) ( Addr a, UInt len ); |
| |
| extern __attribute__((regparm(1))) |
| void VG_(unknown_esp_update) ( Addr new_ESP ); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_syscalls.c |
| ------------------------------------------------------------------ */ |
| |
| extern void VG_(init_dataseg_end_for_brk) ( void ); |
| |
| extern void VG_(perform_assumed_nonblocking_syscall) ( ThreadId tid ); |
| |
| extern void* VG_(pre_known_blocking_syscall) ( ThreadId tid, Int syscallno ); |
| extern void VG_(post_known_blocking_syscall)( ThreadId tid, Int syscallno, |
| void* pre_res, Int res ); |
| |
| extern Bool VG_(is_kerror) ( Int res ); |
| |
| #define KERNEL_DO_SYSCALL(thread_id, result_lvalue) \ |
| VG_(load_thread_state)(thread_id); \ |
| VG_(copy_baseBlock_to_m_state_static)(); \ |
| VG_(do_syscall)(); \ |
| VG_(copy_m_state_static_to_baseBlock)(); \ |
| VG_(save_thread_state)(thread_id); \ |
| result_lvalue = VG_(threads)[thread_id].m_eax; \ |
| VG_TRACK( post_reg_write_syscall_return, thread_id, R_EAX ); |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_transtab.c |
| ------------------------------------------------------------------ */ |
| |
| /* The fast-cache for tt-lookup. */ |
| extern Addr VG_(tt_fast)[VG_TT_FAST_SIZE]; |
| |
| extern void VG_(get_tt_tc_used) ( UInt* tt_used, UInt* tc_used ); |
| |
| extern void VG_(add_to_trans_tab) ( Addr orig_addr, Int orig_size, |
| Addr trans_addr, Int trans_size, |
| UShort jumps[VG_MAX_JUMPS]); |
| |
| extern void VG_(invalidate_translations) ( Addr start, UInt range, Bool unchain_blocks ); |
| |
| extern void VG_(init_tt_tc) ( void ); |
| |
| extern void VG_(sanity_check_tc_tt) ( void ); |
| extern Addr VG_(search_transtab) ( Addr original_addr ); |
| |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_syscall.S |
| ------------------------------------------------------------------ */ |
| |
| extern void VG_(do_syscall) ( void ); |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_startup.S |
| ------------------------------------------------------------------ */ |
| |
| extern void VG_(switch_to_real_CPU) ( void ); |
| |
| extern void VG_(swizzle_esp_then_start_GDB) ( Addr m_eip_at_error, |
| Addr m_esp_at_error, |
| Addr m_ebp_at_error ); |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_dispatch.S |
| ------------------------------------------------------------------ */ |
| |
| /* Run a thread for a (very short) while, until some event happens |
| which means we need to defer to the scheduler. */ |
| extern UInt VG_(run_innerloop) ( void ); |
| |
| /* The patching routing called when a BB wants to chain itself to |
| another. */ |
| extern UInt VG_(patch_me); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_helpers.S |
| ------------------------------------------------------------------ */ |
| |
| /* Mul, div, etc, -- we don't codegen these directly. */ |
| extern void VG_(helper_idiv_64_32); |
| extern void VG_(helper_div_64_32); |
| extern void VG_(helper_idiv_32_16); |
| extern void VG_(helper_div_32_16); |
| extern void VG_(helper_idiv_16_8); |
| extern void VG_(helper_div_16_8); |
| |
| extern void VG_(helper_imul_32_64); |
| extern void VG_(helper_mul_32_64); |
| extern void VG_(helper_imul_16_32); |
| extern void VG_(helper_mul_16_32); |
| extern void VG_(helper_imul_8_16); |
| extern void VG_(helper_mul_8_16); |
| |
| extern void VG_(helper_CLD); |
| extern void VG_(helper_STD); |
| extern void VG_(helper_get_dirflag); |
| |
| extern void VG_(helper_CLC); |
| extern void VG_(helper_STC); |
| |
| extern void VG_(helper_shldl); |
| extern void VG_(helper_shldw); |
| extern void VG_(helper_shrdl); |
| extern void VG_(helper_shrdw); |
| |
| extern void VG_(helper_RDTSC); |
| extern void VG_(helper_CPUID); |
| |
| extern void VG_(helper_bsf); |
| extern void VG_(helper_bsr); |
| |
| extern void VG_(helper_fstsw_AX); |
| extern void VG_(helper_SAHF); |
| extern void VG_(helper_LAHF); |
| extern void VG_(helper_DAS); |
| extern void VG_(helper_DAA); |
| |
| extern void VG_(helper_undefined_instruction); |
| |
| /* NOT A FUNCTION; this is a bogus RETURN ADDRESS. */ |
| extern void VG_(signalreturn_bogusRA)( void ); |
| |
| /* --------------------------------------------------------------------- |
| Things relating to the used skin |
| ------------------------------------------------------------------ */ |
| |
| #define VG_TRACK(fn, args...) \ |
| do { \ |
| if (VG_(track_events).fn) \ |
| VG_(track_events).fn(args); \ |
| } while (0) |
| |
| |
| /* --------------------------------------------------------------------- |
| The state of the simulated CPU. |
| ------------------------------------------------------------------ */ |
| |
| /* --------------------------------------------------------------------- |
| Offsets into baseBlock for everything which needs to referred to |
| from generated code. The order of these decls does not imply |
| what the order of the actual offsets is. The latter is important |
| and is set up in vg_main.c. |
| ------------------------------------------------------------------ */ |
| |
| /* An array of words. In generated code, %ebp always points to the |
| start of this array. Useful stuff, like the simulated CPU state, |
| and the addresses of helper functions, can then be found by |
| indexing off %ebp. The following declares variables which, at |
| startup time, are given values denoting offsets into baseBlock. |
| These offsets are in *words* from the start of baseBlock. */ |
| |
| #define VG_BASEBLOCK_WORDS 400 |
| |
| extern UInt VG_(baseBlock)[VG_BASEBLOCK_WORDS]; |
| |
| |
| /* ----------------------------------------------------- |
| Read-write parts of baseBlock. |
| -------------------------------------------------- */ |
| |
| /* State of the simulated CPU. */ |
| extern Int VGOFF_(m_eax); |
| extern Int VGOFF_(m_ecx); |
| extern Int VGOFF_(m_edx); |
| extern Int VGOFF_(m_ebx); |
| extern Int VGOFF_(m_esp); |
| extern Int VGOFF_(m_ebp); |
| extern Int VGOFF_(m_esi); |
| extern Int VGOFF_(m_edi); |
| extern Int VGOFF_(m_eflags); |
| extern Int VGOFF_(m_ssestate); |
| extern Int VGOFF_(m_eip); |
| |
| extern Int VGOFF_(m_dflag); /* D flag is handled specially */ |
| |
| extern Int VGOFF_(m_cs); |
| extern Int VGOFF_(m_ss); |
| extern Int VGOFF_(m_ds); |
| extern Int VGOFF_(m_es); |
| extern Int VGOFF_(m_fs); |
| extern Int VGOFF_(m_gs); |
| |
| /* Reg-alloc spill area (VG_MAX_SPILLSLOTS words long). */ |
| extern Int VGOFF_(spillslots); |
| |
| /* Records the valid bits for the 8 integer regs & flags reg. */ |
| extern Int VGOFF_(sh_eax); |
| extern Int VGOFF_(sh_ecx); |
| extern Int VGOFF_(sh_edx); |
| extern Int VGOFF_(sh_ebx); |
| extern Int VGOFF_(sh_esp); |
| extern Int VGOFF_(sh_ebp); |
| extern Int VGOFF_(sh_esi); |
| extern Int VGOFF_(sh_edi); |
| extern Int VGOFF_(sh_eflags); |
| |
| /* ----------------------------------------------------- |
| Read-only parts of baseBlock. |
| -------------------------------------------------- */ |
| |
| /* This thread's LDT pointer. */ |
| extern Int VGOFF_(ldt); |
| |
| /* Nb: Most helper offsets are in include/vg_skin.h, for use by skins */ |
| |
| extern Int VGOFF_(helper_undefined_instruction); |
| |
| /* For storing extension-specific helpers, determined at runtime. The addr |
| * and offset arrays together form a (addr, offset) map that allows a |
| * helper's baseBlock offset to be computed from its address. It's done |
| * like this so CCALL_M_Ns and other helper calls can use the function |
| * address rather than having to much around with offsets. */ |
| extern UInt VG_(n_compact_helpers); |
| extern UInt VG_(n_noncompact_helpers); |
| |
| extern Addr VG_(compact_helper_addrs) []; |
| extern Int VG_(compact_helper_offsets)[]; |
| |
| extern Addr VG_(noncompact_helper_addrs) []; |
| extern Int VG_(noncompact_helper_offsets)[]; |
| |
| #endif /* ndef __VG_INCLUDE_H */ |
| |
| |
| /* --------------------------------------------------------------------- |
| Finally - autoconf-generated settings |
| ------------------------------------------------------------------ */ |
| |
| #include "config.h" |
| |
| /*--------------------------------------------------------------------*/ |
| /*--- end vg_include.h ---*/ |
| /*--------------------------------------------------------------------*/ |