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ftmemsim-valgrind/coregrind/vg_include.h
Nicholas Nethercote 73852e1a20 Put VALGRIND_INTERNAL_PRINTF and VALGRIND_INTERNAL_PRINTF_BACKTRACE back in 
vg_include.h, where they must be otherwise vg_libtpthread.c has problems.
Added a comment explaining why they must be in vg_include.h.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2576
2004-08-09 11:15:10 +00:00

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/*--------------------------------------------------------------------*/
/*--- 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) 2000-2004 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 __VG_INCLUDE_H
#define __VG_INCLUDE_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 vg_skin.h. Things
* visible to core but not visible to any tools should go in this
* file, vg_include.h. */
#include "vg_skin.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);
/* 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/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;
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
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. */
extern VgSchedReturnCode VG_(scheduler) ( Int* exit_code,
ThreadId* last_run_thread );
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 );
/* 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 */
/* stage1 executable file descriptor */
extern Int VG_(vgexecfd);
/* client executable file descriptor */
extern Int VG_(clexecfd);
/* 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__));
/* Valgrind's argc and argv */
extern Int VG_(vg_argc);
extern Char **VG_(vg_argv);
/* 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);
/* If we're doing the default action of a fatal signal */
extern jmp_buf* VG_(fatal_signal_jmpbuf_ptr);
extern Int VG_(fatal_sigNo); /* the fatal signal */
/* --- 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 __attribute__((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);
/* Nb: Most helper offsets are in include/vg_skin.h, for use by tools */
extern Int VGOFF_(helper_undefined_instruction);
#endif /* ndef __VG_INCLUDE_H */
/* ---------------------------------------------------------------------
Finally - autoconf-generated settings
------------------------------------------------------------------ */
#include "config.h"
/*--------------------------------------------------------------------*/
/*--- end vg_include.h ---*/
/*--------------------------------------------------------------------*/
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