| |
| /*--------------------------------------------------------------------*/ |
| /*--- A header file for all private parts of Valgrind's core. ---*/ |
| /*--- Include no other! ---*/ |
| /*--- core.h ---*/ |
| /*--------------------------------------------------------------------*/ |
| |
| /* |
| This file is part of Valgrind, an extensible x86 protected-mode |
| emulator for monitoring program execution on x86-Unixes. |
| |
| Copyright (C) 2000-2004 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 __CORE_H |
| #define __CORE_H |
| |
| /* --------------------------------------------------------------------- |
| Build options and table sizes. You should be able to change these |
| options or sizes, recompile, and still have a working system. |
| ------------------------------------------------------------------ */ |
| |
| /* For system call numbers __NR_... */ |
| #include "vg_unistd.h" |
| |
| #include "vg_constants.h" |
| |
| /* All stuff visible to core and tools goes in tool.h. Things |
| * visible to core but not visible to any tools should go in this |
| * file, core.h. */ |
| #include "tool.h" |
| #include "valgrind.h" |
| |
| #undef SK_ |
| #define SK_(x) vgSkinInternal_##x |
| |
| /* 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 ExeContexts. Should be |
| prime. */ |
| #define VG_N_EC_LISTS 4999 /* a prime number */ |
| |
| /* 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 Valgrind tries to reserve for |
| it's own use - two per thread plues a small number of extras. */ |
| #define VG_N_RESERVED_FDS (VG_N_THREADS*2 + 4) |
| |
| /* 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 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 4 |
| |
| /* Max number of callers for context in a suppression. */ |
| #define VG_N_SUPP_CALLERS 4 |
| |
| /* Useful macros */ |
| /* a - alignment - must be a power of 2 */ |
| #define ROUNDDN(p, a) ((Addr)(p) & ~((a)-1)) |
| #define ROUNDUP(p, a) ROUNDDN((p)+(a)-1, (a)) |
| #define PGROUNDDN(p) ROUNDDN(p, VKI_BYTES_PER_PAGE) |
| #define PGROUNDUP(p) ROUNDUP(p, VKI_BYTES_PER_PAGE) |
| |
| |
| /* --------------------------------------------------------------------- |
| 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 |
| |
| /* Default debugger command. */ |
| #define VG_CLO_DEFAULT_DBCOMMAND GDB_PATH " -nw %f %p" |
| |
| /* Describes where logging output is to be sent. */ |
| typedef |
| enum { |
| VgLogTo_Fd, |
| VgLogTo_File, |
| VgLogTo_Socket |
| } VgLogTo; |
| |
| /* pid of main process */ |
| extern Int VG_(main_pid); |
| |
| /* pgrp of process (global to all threads) */ |
| extern Int VG_(main_pgrp); |
| |
| /* Application-visible file descriptor limits */ |
| extern Int VG_(fd_soft_limit); |
| extern Int VG_(fd_hard_limit); |
| |
| /* Should we stop collecting errors if too many appear? default: YES */ |
| extern Bool VG_(clo_error_limit); |
| /* Enquire about whether to attach to a debugger at errors? default: NO */ |
| extern Bool VG_(clo_db_attach); |
| /* The debugger command? default: whatever gdb ./configure found */ |
| extern Char* VG_(clo_db_command); |
| /* 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_(clo_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_log_fd holds the file id, and is |
| taken from the command line. clo_log_name is irrelevant. |
| |
| When log_to == VgLogTo_File, clo_log_name holds the log-file |
| name, and is taken from the command line. clo_log_fd is then |
| made to hold the relevant file id, by opening clo_log_name |
| (concatenated with the process ID) for writing. |
| |
| When log_to == VgLogTo_Socket, clo_log_name holds the |
| hostname:portnumber pair, and is taken from the command line. |
| clo_log_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 log_fd == 2 |
| (stderr). */ |
| extern VgLogTo VG_(clo_log_to); |
| extern Int VG_(clo_log_fd); |
| extern Char* VG_(clo_log_name); |
| |
| /* Add timestamps to log messages? default: NO */ |
| extern Bool VG_(clo_time_stamp); |
| |
| /* 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); |
| /* 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); |
| /* How often we should poll for signals, assuming we need to poll for |
| signals. */ |
| extern Int VG_(clo_signal_polltime); |
| |
| /* Low latency syscalls and signals */ |
| extern Bool VG_(clo_lowlat_syscalls); |
| extern Bool VG_(clo_lowlat_signals); |
| |
| /* Track open file descriptors? */ |
| extern Bool VG_(clo_track_fds); |
| |
| /* 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 tool 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); |
| /* Generate branch-prediction hints? */ |
| extern Bool VG_(clo_branchpred); |
| /* Continue stack traces below main()? Default: NO */ |
| extern Bool VG_(clo_show_below_main); |
| /* Test each client pointer dereference to check it's within the |
| client address space bounds */ |
| extern Bool VG_(clo_pointercheck); |
| |
| /* Set up the libc freeres wrapper */ |
| extern void VG_(intercept_libc_freeres_wrapper)(Addr); |
| |
| /* --------------------------------------------------------------------- |
| Profiling stuff |
| ------------------------------------------------------------------ */ |
| |
| 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) |
| |
| /* --------------------------------------------------------------------- |
| Tool-related types |
| ------------------------------------------------------------------ */ |
| /* These structs are not exposed to tools to mitigate possibility of |
| binary-incompatibilities when the core/tool interface changes. Instead, |
| set functions are provided (see include/tool.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; |
| Bool shadow_memory; |
| } |
| VgNeeds; |
| |
| extern VgNeeds VG_(needs); |
| |
| extern void VG_(tool_init_dlsym)(void *dlhandle); |
| |
| #include "vg_toolint.h" |
| |
| /* --------------------------------------------------------------------- |
| 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. |
| TOOL for the tool 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 tool replaces glibc's |
| malloc() et al -- redzone size is chosen by the tool. |
| 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_TOOL 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 |
| |
| // This is both the minimum payload size of a malloc'd block, and its |
| // minimum alignment. Must be a power of 2 greater than 4, and should be |
| // greater than 8. |
| #define VG_MIN_MALLOC_SZB 8 |
| |
| // Round-up size for --sloppy-malloc=yes. |
| #define VG_SLOPPY_MALLOC_SZB 4 |
| |
| 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_(sanity_check_malloc_all) ( void ); |
| |
| extern void VG_(print_all_arena_stats) ( void ); |
| |
| extern Bool VG_(is_empty_arena) ( ArenaId aid ); |
| |
| /* --------------------------------------------------------------------- |
| 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 tools. */ |
| |
| #define VG_USERREQ__MALLOC 0x2001 |
| #define VG_USERREQ__FREE 0x2002 |
| |
| /* (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 /* unused */ |
| #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 /* unused */ |
| |
| /* 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 __libc_freeres_wrapper(). */ |
| #define VG_USERREQ__LIBC_FREERES_DONE 0x3029 |
| |
| /* Allocate RT signals */ |
| #define VG_USERREQ__GET_SIGRT_MIN 0x302B |
| #define VG_USERREQ__GET_SIGRT_MAX 0x302C |
| #define VG_USERREQ__ALLOC_RTSIG 0x302D |
| |
| /* Hook for replace_malloc.o to get malloc functions */ |
| #define VG_USERREQ__GET_MALLOCFUNCS 0x3030 |
| |
| /* Get stack information for a thread. */ |
| #define VG_USERREQ__GET_STACK_INFO 0x3033 |
| |
| /* Cosmetic ... */ |
| #define VG_USERREQ__GET_PTHREAD_TRACE_LEVEL 0x3101 |
| /* Log a pthread error from client-space. Cosmetic. */ |
| #define VG_USERREQ__PTHREAD_ERROR 0x3102 |
| /* Internal equivalent of VALGRIND_PRINTF . */ |
| #define VG_USERREQ__INTERNAL_PRINTF 0x3103 |
| /* Internal equivalent of VALGRIND_PRINTF_BACKTRACE . */ |
| #define VG_USERREQ__INTERNAL_PRINTF_BACKTRACE 0x3104 |
| |
| /* |
| In vg_constants.h: |
| #define VG_USERREQ__SIGNAL_RETURNS 0x4001 |
| */ |
| |
| #define VG_INTERCEPT_PREFIX "_vgi__" |
| #define VG_INTERCEPT_PREFIX_LEN 6 |
| #define VG_INTERCEPT(name) _vgi__##name |
| #define VG_INTERCEPT_ALIAS(name) "_vgi__" #name |
| |
| #define VG_WRAPPER_PREFIX "_vgw__" |
| #define VG_WRAPPER_PREFIX_LEN 6 |
| #define VG_WRAPPER(name) _vgw__##name |
| #define VG_WRAPPER_ALIAS(name) "_vgw__" #name |
| |
| |
| struct vg_mallocfunc_info { |
| /* things vg_replace_malloc.o needs to know about */ |
| Addr sk_malloc; |
| Addr sk_calloc; |
| Addr sk_realloc; |
| Addr sk_memalign; |
| Addr sk___builtin_new; |
| Addr sk___builtin_vec_new; |
| Addr sk_free; |
| Addr sk___builtin_delete; |
| Addr sk___builtin_vec_delete; |
| |
| Addr arena_payload_szB; |
| |
| Bool clo_sloppy_malloc; |
| Bool clo_trace_malloc; |
| }; |
| |
| /* --------------------------------------------------------------------- |
| 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 ); |
| extern void VG_(clear_TLS_for_thread) ( VgLdtEntry* tls ); |
| |
| /* Simulate the modify_ldt syscall. */ |
| extern Int VG_(sys_modify_ldt) ( ThreadId tid, |
| Int func, void* ptr, UInt bytecount ); |
| |
| /* Simulate the {get,set}_thread_area syscalls. */ |
| extern Int VG_(sys_set_thread_area) ( ThreadId tid, |
| struct vki_modify_ldt_ldt_s* info ); |
| extern Int VG_(sys_get_thread_area) ( ThreadId tid, |
| struct vki_modify_ldt_ldt_s* info ); |
| |
| /* 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_libpthread.c |
| ------------------------------------------------------------------ */ |
| |
| /* Replacements for pthread types, shared between vg_libpthread.c and |
| vg_scheduler.c. See comment in vg_libpthread.c above the other |
| vg_pthread_*_t types for a description of how these are used. */ |
| |
| struct _vg_pthread_fastlock |
| { |
| long int __vg_status; /* "Free" or "taken" or head of waiting list */ |
| int __vg_spinlock; /* Used by compare_and_swap emulation. Also, |
| adaptive SMP lock stores spin count here. */ |
| }; |
| |
| typedef struct |
| { |
| int __vg_m_reserved; /* Reserved for future use */ |
| int __vg_m_count; /* Depth of recursive locking */ |
| /*_pthread_descr*/ void* __vg_m_owner; /* Owner thread (if recursive or errcheck) */ |
| int __vg_m_kind; /* Mutex kind: fast, recursive or errcheck */ |
| struct _vg_pthread_fastlock __vg_m_lock; /* Underlying fast lock */ |
| } vg_pthread_mutex_t; |
| |
| typedef struct |
| { |
| struct _vg_pthread_fastlock __vg_c_lock; /* Protect against concurrent access */ |
| /*_pthread_descr*/ void* __vg_c_waiting; /* Threads waiting on this condition */ |
| |
| // Nb: the following padding removed because it was missing from an |
| // earlier glibc, so the size test in the CONVERT macro was failing. |
| // --njn |
| |
| // Padding ensures the size is 48 bytes |
| /*char __vg_padding[48 - sizeof(struct _vg_pthread_fastlock) |
| - sizeof(void*) - sizeof(long long)]; |
| long long __vg_align;*/ |
| } vg_pthread_cond_t; |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_scheduler.c |
| ------------------------------------------------------------------ */ |
| |
| typedef |
| enum ThreadStatus { |
| 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_WaitMX, /* waiting on a mutex */ |
| VgTs_WaitCV, /* waiting on a condition variable */ |
| VgTs_WaitSys, /* waiting for a syscall to complete */ |
| VgTs_Sleeping, /* sleeping for a while */ |
| } |
| ThreadStatus; |
| |
| typedef |
| enum CleanupType { |
| VgCt_None, /* this cleanup entry is not initialised */ |
| VgCt_Function, /* an old-style function pointer cleanup */ |
| VgCt_Longjmp /* a new-style longjmp based cleanup */ |
| } |
| CleanupType; |
| |
| /* Information on a thread's stack. */ |
| typedef |
| struct { |
| Addr base; |
| UInt size; |
| UInt guardsize; |
| } |
| StackInfo; |
| |
| /* An entry in a threads's cleanup stack. */ |
| typedef |
| struct { |
| CleanupType type; |
| union { |
| struct { |
| void (*fn)(void*); |
| void* arg; |
| } function; |
| struct { |
| void *ub; |
| int ctype; |
| } longjmp; |
| } data; |
| } |
| CleanupEntry; |
| |
| /* An entry in a thread's fork-handler stack. */ |
| typedef |
| struct { |
| void (*prepare)(void); |
| void (*parent)(void); |
| void (*child)(void); |
| } |
| ForkHandlerEntry; |
| |
| typedef struct ProxyLWP ProxyLWP; |
| |
| typedef |
| 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. */ |
| vg_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_timer). |
| |
| 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; |
| |
| /* If VgTs_WaitSys, this is the result of the pre-syscall check */ |
| void *sys_pre_res; |
| |
| /* If VgTs_WaitSys, this is the syscall we're currently running */ |
| Int syscallno; |
| |
| /* If VgTs_WaitSys, this is the syscall flags */ |
| UInt sys_flags; |
| |
| /* Details about this thread's proxy LWP */ |
| ProxyLWP *proxy; |
| |
| /* 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 this signal mask. If more than one thread accepts a |
| signal, then it will be delivered to one at random. If all |
| threads block the signal, it will remain pending until either a |
| thread unblocks it or someone uses sigwaitsig/sigtimedwait. |
| |
| sig_mask reflects what the client told us its signal mask should |
| be, but isn't necessarily the current signal mask of the proxy |
| LWP: it may have more signals blocked because of signal |
| handling, or it may be different because of sigsuspend. |
| */ |
| vki_ksigset_t sig_mask; |
| |
| /* Effective signal mask. This is the mask which currently |
| applies; it may be different from sig_mask while a signal |
| handler is running. |
| */ |
| vki_ksigset_t eff_sig_mask; |
| |
| /* 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; |
| |
| /* The allocated size of this thread's stack's guard area (permanently |
| zero if this is ThreadId == 0, since we didn't allocate its stack) */ |
| UInt stack_guard_size; |
| |
| /* 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; |
| |
| /* Alternate signal stack */ |
| vki_kstack_t altstack; |
| |
| /* 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; |
| |
| /* TLS table. This consists of a small number (currently 3) of |
| entries from the Global Descriptor Table. */ |
| VgLdtEntry tls[VKI_GDT_TLS_ENTRIES]; |
| |
| /* 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 and in VG_(baseBlock) 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; |
| } |
| ThreadState; |
| |
| |
| /* 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 ); |
| |
| /* Determine if 'tid' is that of the current running thread (Nb: returns |
| False if no thread is currently running. */ |
| extern Bool VG_(is_running_thread)(ThreadId tid); |
| |
| /* Get the ThreadState for a particular thread */ |
| extern ThreadState *VG_(get_ThreadState)(ThreadId tid); |
| |
| /* Similarly ... */ |
| extern ThreadId VG_(get_current_tid) ( void ); |
| |
| /* Nuke all threads except tid. */ |
| extern void VG_(nuke_all_threads_except) ( ThreadId me ); |
| |
| /* Give a hint to the scheduler that it may be a good time to find a |
| new runnable thread. If prefer_sched != VG_INVALID_THREADID, then |
| try to schedule that thread. |
| */ |
| extern void VG_(need_resched) ( ThreadId prefer_sched ); |
| |
| /* 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_FatalSig /* Killed by the default action of a fatal |
| signal */ |
| } |
| VgSchedReturnCode; |
| |
| |
| // The scheduler. 'fatal_sigNo' is only set if VgSrc_FatalSig is returned. |
| extern VgSchedReturnCode VG_(scheduler) |
| ( Int* exit_code, ThreadId* last_run_thread, Int* fatal_sigNo ); |
| |
| extern void VG_(scheduler_init) ( void ); |
| |
| extern void VG_(pp_sched_status) ( void ); |
| |
| // Longjmp back to the scheduler and thus enter the sighandler immediately. |
| extern void VG_(resume_scheduler) ( Int sigNo, vki_ksiginfo_t *info ); |
| |
| // Longjmp, ending the scheduler, when a fatal signal occurs in the client. |
| extern void VG_(scheduler_handle_fatal_signal)( Int sigNo ); |
| |
| /* 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_SZB 16 |
| |
| /* 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_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) |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_signals.c |
| ------------------------------------------------------------------ */ |
| |
| extern Bool VG_(do_signal_routing); /* whether scheduler LWP has to route signals */ |
| |
| /* RT signal allocation */ |
| extern Int VG_(sig_rtmin); |
| extern Int VG_(sig_rtmax); |
| extern Int VG_(sig_alloc_rtsig) ( Int high ); |
| |
| extern void VG_(sigstartup_actions) ( void ); |
| |
| extern void VG_(deliver_signal) ( ThreadId tid, const vki_ksiginfo_t *, Bool async ); |
| extern void VG_(unblock_host_signal) ( Int sigNo ); |
| |
| extern Bool VG_(is_sig_ign) ( Int sigNo ); |
| |
| /* Route pending signals from the scheduler LWP to the appropriate |
| thread LWP. */ |
| extern void VG_(route_signals) ( void ); |
| |
| /* 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 ); |
| |
| /* 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 ); |
| |
| extern void VG_(kill_self)(Int sigNo); |
| |
| /* These function synthesize a fault, as if the running instruction |
| had had a fault. These functions do not return - they longjmp back |
| into the scheduler so the signal can be delivered. */ |
| extern void VG_(synth_fault) (ThreadId tid); |
| extern void VG_(synth_fault_mapping)(ThreadId tid, Addr addr); |
| extern void VG_(synth_fault_perms) (ThreadId tid, Addr addr); |
| |
| extern void VG_(get_sigstack_bounds)( Addr* low, Addr* high ); |
| |
| /* --------------------------------------------------------------------- |
| 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) ( const Char* expr, const Char* file, |
| Int line, const Char* fn ); |
| __attribute__ ((__noreturn__)) |
| extern void VG_(core_panic) ( Char* str ); |
| |
| /* Tools use VG_(strdup)() which doesn't expose ArenaId */ |
| extern Char* VG_(arena_strdup) ( ArenaId aid, const Char* s); |
| |
| extern Int VG_(fcntl) ( Int fd, Int cmd, Int arg ); |
| extern Int VG_(poll)( struct vki_pollfd *, UInt nfds, Int timeout); |
| |
| /* system/mman.h */ |
| extern void* VG_(mmap)( void* start, UInt length, UInt prot, UInt flags, |
| UInt sf_flags, UInt fd, UInt offset ); |
| extern Int VG_(munmap)( void* start, Int length ); |
| extern Int VG_(mprotect)( void *start, Int length, UInt prot ); |
| |
| |
| /* Move an fd into the Valgrind-safe range */ |
| Int VG_(safe_fd)(Int oldfd); |
| |
| extern Int VG_(write_socket)( Int sd, void *msg, Int count ); |
| |
| /* --- Connecting over the network --- */ |
| extern Int VG_(connect_via_socket)( UChar* str ); |
| |
| /* Environment manipulations */ |
| extern Char **VG_(env_setenv) ( Char ***envp, const Char* varname, |
| const Char *val ); |
| extern void VG_(env_unsetenv) ( Char **env, const Char *varname ); |
| extern void VG_(env_remove_valgrind_env_stuff) ( Char** env ); |
| |
| /* --------------------------------------------------------------------- |
| 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 ); |
| |
| // Functions for printing from code within Valgrind, but which runs on the |
| // sim'd CPU. Defined here because needed for vg_libpthread.c, |
| // vg_replace_malloc.c, plus the rest of the core. The weak attribute |
| // ensures the multiple definitions are not a problem. They must be functions |
| // rather than macros so that va_list can be used. |
| |
| __attribute__((weak)) |
| int |
| VALGRIND_INTERNAL_PRINTF(char *format, ...) |
| { |
| unsigned int _qzz_res = 0; |
| va_list vargs; |
| va_start(vargs, format); |
| VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0, VG_USERREQ__INTERNAL_PRINTF, |
| (unsigned int)format, (unsigned int)vargs, 0, 0); |
| va_end(vargs); |
| return _qzz_res; |
| } |
| |
| __attribute__((weak)) |
| int |
| VALGRIND_INTERNAL_PRINTF_BACKTRACE(char *format, ...) |
| { |
| unsigned int _qzz_res = 0; |
| va_list vargs; |
| va_start(vargs, format); |
| VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0, VG_USERREQ__INTERNAL_PRINTF_BACKTRACE, |
| (unsigned int)format, (unsigned int)vargs, 0, 0); |
| va_end(vargs); |
| return _qzz_res; |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| 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 ); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_to_ucode.c |
| ------------------------------------------------------------------ */ |
| |
| Bool VG_(cpu_has_feature)(UInt feat); |
| |
| 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 void VG_(translate) ( ThreadId tid, Addr orig_addr, Bool debugging ); |
| |
| extern void VG_(sanity_check_UInstr) ( UInt n, UInstr* u ); |
| |
| extern void VG_(print_reg_alloc_stats) ( void ); |
| |
| /* --------------------------------------------------------------------- |
| 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 1, 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_(print_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. |
| ------------------------------------------------------------------ */ |
| |
| 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 UInt VG_(get_n_errs_found) ( void ); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_procselfmaps.c |
| ------------------------------------------------------------------ */ |
| |
| /* Reads /proc/self/maps into a static buffer which can be parsed by |
| VG_(parse_procselfmaps)(). */ |
| extern void VG_(read_procselfmaps) ( 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_(parse_procselfmaps) ( |
| void (*record_mapping)( Addr addr, UInt len, Char rr, Char ww, Char xx, |
| UInt dev, UInt ino, ULong foff, |
| const UChar *filename ) ); |
| |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_symtab2.c |
| ------------------------------------------------------------------ */ |
| |
| typedef struct _Segment Segment; |
| |
| extern Bool VG_(is_object_file) ( const void *hdr ); |
| extern void VG_(mini_stack_dump) ( Addr eips[], UInt n_eips ); |
| extern SegInfo * VG_(read_seg_symbols) ( Segment *seg ); |
| extern void VG_(symtab_incref) ( SegInfo * ); |
| extern void VG_(symtab_decref) ( SegInfo *, Addr a, UInt len ); |
| |
| extern Bool VG_(get_fnname_nodemangle)( Addr a, Char* fnname, Int n_fnname ); |
| |
| /* Set up some default redirects */ |
| extern void VG_(setup_code_redirect_table) ( void ); |
| |
| /* Redirection machinery */ |
| extern Addr VG_(code_redirect) ( Addr orig ); |
| |
| /* --------------------------------------------------------------------- |
| 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 |
| main(). 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_(sanity_check_general) ( Bool force_expensive ); |
| |
| /* Address space */ |
| extern Addr VG_(client_base); /* client address space limits */ |
| extern Addr VG_(client_end); |
| extern Addr VG_(client_mapbase); /* base of mappings */ |
| extern Addr VG_(clstk_base); /* client stack range */ |
| extern Addr VG_(clstk_end); |
| extern Addr VG_(client_trampoline_code); |
| |
| extern Addr VG_(brk_base); /* start of brk */ |
| extern Addr VG_(brk_limit); /* current brk */ |
| extern Addr VG_(shadow_base); /* tool's shadow memory */ |
| extern Addr VG_(shadow_end); |
| extern Addr VG_(valgrind_base); /* valgrind's address range */ |
| extern Addr VG_(valgrind_end); |
| |
| extern vki_rlimit VG_(client_rlimit_data); /* client's original rlimit data */ |
| |
| /* client executable file descriptor */ |
| extern Int VG_(clexecfd); |
| |
| // Help set up the child used when doing execve() with --trace-children=yes |
| Char* VG_(build_child_VALGRINDCLO) ( Char* exename ); |
| Char* VG_(build_child_exename) ( 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__)); |
| |
| /* Something of a function looking for a home ... start up debugger. */ |
| extern void VG_(start_debugger) ( Int tid ); |
| |
| /* Counts downwards in vg_run_innerloop. */ |
| extern UInt VG_(dispatch_ctr); |
| |
| /* --- Counters, for informational purposes only. --- */ |
| |
| // These counters must be declared here because they're maintained by |
| // vg_dispatch.S. |
| extern UInt VG_(bb_enchain_count); // Counts of chain operations done |
| extern UInt VG_(bb_dechain_count); // Counts of unchain operations done |
| extern UInt VG_(unchained_jumps_done); // Number of unchained jumps performed |
| |
| extern void VG_(print_scheduler_stats) ( void ); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_memory.c |
| ------------------------------------------------------------------ */ |
| |
| /* A Segment is mapped piece of client memory. This covers all kinds |
| of mapped memory (exe, brk, mmap, .so, shm, stack, etc) |
| |
| We try to encode everything we know about a particular segment here. |
| */ |
| #define SF_FIXED (1 << 0) // client asked for MAP_FIXED |
| #define SF_SHARED (1 << 1) // shared |
| #define SF_SHM (1 << 2) // SYSV SHM (also SF_SHARED) |
| #define SF_MMAP (1 << 3) // mmap memory |
| #define SF_FILE (1 << 4) // mapping is backed by a file |
| #define SF_STACK (1 << 5) // is a stack |
| #define SF_GROWDOWN (1 << 6) // segment grows down |
| #define SF_GROWUP (1 << 7) // segment grows up |
| #define SF_EXEC (1 << 8) // segment created by exec |
| #define SF_DYNLIB (1 << 9) // mapped from dynamic library |
| #define SF_NOSYMS (1 << 10) // don't load syms, even if present |
| #define SF_BRK (1 << 11) // brk segment |
| #define SF_CORE (1 << 12) // allocated by core on behalf of the client |
| #define SF_VALGRIND (1 << 13) // a valgrind-internal mapping - not in client |
| #define SF_CODE (1 << 14) // segment contains cached code |
| |
| struct _Segment { |
| UInt prot; /* VKI_PROT_* */ |
| UInt flags; /* SF_* */ |
| |
| Addr addr; /* mapped addr (page aligned) */ |
| UInt len; /* size of mapping (page aligned) */ |
| |
| /* These are valid if (flags & SF_FILE) */ |
| ULong offset; /* file offset */ |
| const Char *filename; /* filename (NULL if unknown) */ |
| UInt dev; /* device */ |
| UInt ino; /* inode */ |
| |
| SegInfo *symtab; /* symbol table */ |
| }; |
| |
| /* segment mapped from a file descriptor */ |
| extern void VG_(map_fd_segment) (Addr addr, UInt len, UInt prot, UInt flags, |
| Int fd, ULong off, const Char *filename); |
| |
| /* segment mapped from a file */ |
| extern void VG_(map_file_segment)(Addr addr, UInt len, UInt prot, UInt flags, |
| UInt dev, UInt ino, ULong off, const Char *filename); |
| |
| /* simple segment */ |
| extern void VG_(map_segment) (Addr addr, UInt len, UInt prot, UInt flags); |
| |
| extern void VG_(unmap_range) (Addr addr, UInt len); |
| extern void VG_(mprotect_range)(Addr addr, UInt len, UInt prot); |
| extern Addr VG_(find_map_space)(Addr base, UInt len, Bool for_client); |
| |
| extern Segment *VG_(find_segment)(Addr a); |
| extern Segment *VG_(first_segment)(void); |
| extern Segment *VG_(next_segment)(Segment *); |
| |
| extern Bool VG_(seg_contains)(const Segment *s, Addr ptr, UInt size); |
| extern Bool VG_(seg_overlaps)(const Segment *s, Addr ptr, UInt size); |
| |
| extern void VG_(pad_address_space)(void); |
| extern void VG_(unpad_address_space)(void); |
| |
| extern REGPARM(1) |
| void VG_(unknown_esp_update) ( Addr new_ESP ); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_proxylwp.c |
| ------------------------------------------------------------------ */ |
| |
| /* Issue a syscall for thread tid */ |
| extern Int VG_(sys_issue)(int tid); |
| |
| extern void VG_(proxy_init) ( void ); |
| extern void VG_(proxy_create) ( ThreadId tid ); |
| extern void VG_(proxy_delete) ( ThreadId tid, Bool force ); |
| extern void VG_(proxy_results) ( void ); |
| extern void VG_(proxy_sendsig) ( ThreadId tid, Int signo ); |
| extern void VG_(proxy_setsigmask)(ThreadId tid); |
| extern void VG_(proxy_sigack) ( ThreadId tid, const vki_ksigset_t *); |
| extern void VG_(proxy_abort_syscall) ( ThreadId tid ); |
| extern void VG_(proxy_waitsig) ( void ); |
| extern void VG_(proxy_wait_sys) (ThreadId tid, Bool restart); |
| |
| extern void VG_(proxy_shutdown) ( void ); // shut down the syscall workers |
| extern Int VG_(proxy_resfd) ( void ); // FD something can select on to know |
| // a syscall finished |
| |
| /* Sanity-check the whole proxy-LWP machinery */ |
| void VG_(sanity_check_proxy)(void); |
| |
| /* Send a signal from a thread's proxy to the thread. This longjmps |
| back into the proxy's main loop, so it doesn't return. */ |
| __attribute__ ((__noreturn__)) |
| extern void VG_(proxy_handlesig)( const vki_ksiginfo_t *siginfo, |
| const struct vki_sigcontext *sigcontext ); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_syscalls.c |
| ------------------------------------------------------------------ */ |
| |
| extern Char *VG_(resolve_filename)(Int fd); |
| |
| extern Bool VG_(pre_syscall) ( ThreadId tid ); |
| extern void VG_(post_syscall)( ThreadId tid, Bool restart ); |
| |
| extern Bool VG_(is_kerror) ( Int res ); |
| |
| /* Internal atfork handlers */ |
| typedef void (*vg_atfork_t)(ThreadId); |
| extern void VG_(atfork)(vg_atfork_t pre, vg_atfork_t parent, vg_atfork_t child); |
| |
| /* fd leakage calls. */ |
| extern void VG_(init_preopened_fds) ( void ); |
| extern void VG_(show_open_fds) ( void ); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_transtab.c |
| ------------------------------------------------------------------ */ |
| |
| /* The fast-cache for tt-lookup. */ |
| extern Addr VG_(tt_fast)[VG_TT_FAST_SIZE]; |
| |
| extern void VG_(init_tt_tc) ( void ); |
| 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 Addr VG_(search_transtab) ( Addr original_addr ); |
| |
| extern void VG_(invalidate_translations) ( Addr start, UInt range, |
| Bool unchain_blocks ); |
| |
| extern void VG_(sanity_check_tt_tc) ( void ); |
| |
| extern void VG_(print_tt_tc_stats) ( void ); |
| |
| extern Int VG_(get_bbs_translated) ( void ); |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_syscall.S |
| ------------------------------------------------------------------ */ |
| |
| extern Int VG_(do_syscall) ( UInt, ... ); |
| extern Int VG_(clone) ( Int (*fn)(void *), void *stack, Int flags, void *arg, |
| Int *child_tid, Int *parent_tid); |
| extern void VG_(sigreturn)(void); |
| |
| /* --------------------------------------------------------------------- |
| 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_CMC); |
| |
| extern void VG_(helper_shldl); |
| extern void VG_(helper_shldw); |
| extern void VG_(helper_shrdl); |
| extern void VG_(helper_shrdw); |
| |
| extern void VG_(helper_IN); |
| extern void VG_(helper_OUT); |
| |
| extern void VG_(helper_RDTSC); |
| extern void VG_(helper_CPUID); |
| |
| extern void VG_(helper_bsfw); |
| extern void VG_(helper_bsfl); |
| extern void VG_(helper_bsrw); |
| extern void VG_(helper_bsrl); |
| |
| 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_AAS); |
| extern void VG_(helper_AAA); |
| extern void VG_(helper_AAD); |
| extern void VG_(helper_AAM); |
| |
| extern void VG_(helper_cmpxchg8b); |
| |
| extern void VG_(helper_undefined_instruction); |
| |
| /* Information about trampoline code (for signal return and syscalls) */ |
| extern const Char VG_(trampoline_code_start); |
| extern const Int VG_(trampoline_code_length); |
| extern const Int VG_(tramp_sigreturn_offset); |
| extern const Int VG_(tramp_syscall_offset); |
| |
| /* --------------------------------------------------------------------- |
| Things relating to the used tool |
| ------------------------------------------------------------------ */ |
| |
| #define VG_TRACK(fn, args...) \ |
| do { \ |
| if (VG_(defined_##fn)()) \ |
| SK_(fn)(args); \ |
| } while(0) |
| |
| __attribute__ ((noreturn)) |
| extern void VG_(missing_tool_func) ( const Char* fn ); |
| |
| /* --------------------------------------------------------------------- |
| 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); |
| |
| /* This thread's TLS pointer. */ |
| extern Int VGOFF_(tls_ptr); |
| |
| /* Nb: Most helper offsets are in include/tool.h, for use by tools */ |
| |
| extern Int VGOFF_(helper_undefined_instruction); |
| |
| #endif /* ndef __CORE_H */ |
| |
| |
| /* --------------------------------------------------------------------- |
| Finally - autoconf-generated settings |
| ------------------------------------------------------------------ */ |
| |
| #include "config.h" |
| |
| /*--------------------------------------------------------------------*/ |
| /*--- end ---*/ |
| /*--------------------------------------------------------------------*/ |