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VG_EXPAND_FRAME_BY_trashes_r3(512) \
"std 2,-16(11)\n\t" /* save tocptr */ \
"ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \
"ld 3, 8(11)\n\t" /* arg1->r3 */ \
"ld 4, 16(11)\n\t" /* arg2->r4 */ \
"ld 5, 24(11)\n\t" /* arg3->r5 */ \
"ld 6, 32(11)\n\t" /* arg4->r6 */ \
"ld 7, 40(11)\n\t" /* arg5->r7 */ \
"ld 8, 48(11)\n\t" /* arg6->r8 */ \
"ld 9, 56(11)\n\t" /* arg7->r9 */ \
"ld 10, 64(11)\n\t" /* arg8->r10 */ \
"ld 11, 0(11)\n\t" /* target->r11 */ \
VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \
"mr 11,%1\n\t" \
"mr %0,3\n\t" \
"ld 2,-16(11)\n\t" /* restore tocptr */ \
VG_CONTRACT_FRAME_BY(512) \
: /*out*/ "=r" (_res) \
: /*in*/ "r" (&_argvec[2]) \
: /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \
); \
lval = (__typeof__(lval)) _res; \
} while (0)
#define CALL_FN_W_9W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \
arg7,arg8,arg9) \
do { \
volatile OrigFn _orig = (orig); \
volatile unsigned long _argvec[3+9]; \
volatile unsigned long _res; \
/* _argvec[0] holds current r2 across the call */ \
_argvec[1] = (unsigned long)_orig.r2; \
_argvec[2] = (unsigned long)_orig.nraddr; \
_argvec[2+1] = (unsigned long)arg1; \
_argvec[2+2] = (unsigned long)arg2; \
_argvec[2+3] = (unsigned long)arg3; \
_argvec[2+4] = (unsigned long)arg4; \
_argvec[2+5] = (unsigned long)arg5; \
_argvec[2+6] = (unsigned long)arg6; \
_argvec[2+7] = (unsigned long)arg7; \
_argvec[2+8] = (unsigned long)arg8; \
_argvec[2+9] = (unsigned long)arg9; \
__asm__ volatile( \
"mr 11,%1\n\t" \
VG_EXPAND_FRAME_BY_trashes_r3(512) \
"std 2,-16(11)\n\t" /* save tocptr */ \
"ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \
VG_EXPAND_FRAME_BY_trashes_r3(128) \
/* arg9 */ \
"ld 3,72(11)\n\t" \
"std 3,112(1)\n\t" \
/* args1-8 */ \
"ld 3, 8(11)\n\t" /* arg1->r3 */ \
"ld 4, 16(11)\n\t" /* arg2->r4 */ \
"ld 5, 24(11)\n\t" /* arg3->r5 */ \
"ld 6, 32(11)\n\t" /* arg4->r6 */ \
"ld 7, 40(11)\n\t" /* arg5->r7 */ \
"ld 8, 48(11)\n\t" /* arg6->r8 */ \
"ld 9, 56(11)\n\t" /* arg7->r9 */ \
"ld 10, 64(11)\n\t" /* arg8->r10 */ \
"ld 11, 0(11)\n\t" /* target->r11 */ \
VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \
"mr 11,%1\n\t" \
"mr %0,3\n\t" \
"ld 2,-16(11)\n\t" /* restore tocptr */ \
VG_CONTRACT_FRAME_BY(128) \
VG_CONTRACT_FRAME_BY(512) \
: /*out*/ "=r" (_res) \
: /*in*/ "r" (&_argvec[2]) \
: /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \
); \
lval = (__typeof__(lval)) _res; \
} while (0)
#define CALL_FN_W_10W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \
arg7,arg8,arg9,arg10) \
do { \
volatile OrigFn _orig = (orig); \
volatile unsigned long _argvec[3+10]; \
volatile unsigned long _res; \
/* _argvec[0] holds current r2 across the call */ \
_argvec[1] = (unsigned long)_orig.r2; \
_argvec[2] = (unsigned long)_orig.nraddr; \
_argvec[2+1] = (unsigned long)arg1; \
_argvec[2+2] = (unsigned long)arg2; \
_argvec[2+3] = (unsigned long)arg3; \
_argvec[2+4] = (unsigned long)arg4; \
_argvec[2+5] = (unsigned long)arg5; \
_argvec[2+6] = (unsigned long)arg6; \
_argvec[2+7] = (unsigned long)arg7; \
_argvec[2+8] = (unsigned long)arg8; \
_argvec[2+9] = (unsigned long)arg9; \
_argvec[2+10] = (unsigned long)arg10; \
__asm__ volatile( \
"mr 11,%1\n\t" \
VG_EXPAND_FRAME_BY_trashes_r3(512) \
"std 2,-16(11)\n\t" /* save tocptr */ \
"ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \
VG_EXPAND_FRAME_BY_trashes_r3(128) \
/* arg10 */ \
"ld 3,80(11)\n\t" \
"std 3,120(1)\n\t" \
/* arg9 */ \
"ld 3,72(11)\n\t" \
"std 3,112(1)\n\t" \
/* args1-8 */ \
"ld 3, 8(11)\n\t" /* arg1->r3 */ \
"ld 4, 16(11)\n\t" /* arg2->r4 */ \
"ld 5, 24(11)\n\t" /* arg3->r5 */ \
"ld 6, 32(11)\n\t" /* arg4->r6 */ \
"ld 7, 40(11)\n\t" /* arg5->r7 */ \
"ld 8, 48(11)\n\t" /* arg6->r8 */ \
"ld 9, 56(11)\n\t" /* arg7->r9 */ \
"ld 10, 64(11)\n\t" /* arg8->r10 */ \
"ld 11, 0(11)\n\t" /* target->r11 */ \
VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \
"mr 11,%1\n\t" \
"mr %0,3\n\t" \
"ld 2,-16(11)\n\t" /* restore tocptr */ \
VG_CONTRACT_FRAME_BY(128) \
VG_CONTRACT_FRAME_BY(512) \
: /*out*/ "=r" (_res) \
: /*in*/ "r" (&_argvec[2]) \
: /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \
); \
lval = (__typeof__(lval)) _res; \
} while (0)
#define CALL_FN_W_11W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \
arg7,arg8,arg9,arg10,arg11) \
do { \
volatile OrigFn _orig = (orig); \
volatile unsigned long _argvec[3+11]; \
volatile unsigned long _res; \
/* _argvec[0] holds current r2 across the call */ \
_argvec[1] = (unsigned long)_orig.r2; \
_argvec[2] = (unsigned long)_orig.nraddr; \
_argvec[2+1] = (unsigned long)arg1; \
_argvec[2+2] = (unsigned long)arg2; \
_argvec[2+3] = (unsigned long)arg3; \
_argvec[2+4] = (unsigned long)arg4; \
_argvec[2+5] = (unsigned long)arg5; \
_argvec[2+6] = (unsigned long)arg6; \
_argvec[2+7] = (unsigned long)arg7; \
_argvec[2+8] = (unsigned long)arg8; \
_argvec[2+9] = (unsigned long)arg9; \
_argvec[2+10] = (unsigned long)arg10; \
_argvec[2+11] = (unsigned long)arg11; \
__asm__ volatile( \
"mr 11,%1\n\t" \
VG_EXPAND_FRAME_BY_trashes_r3(512) \
"std 2,-16(11)\n\t" /* save tocptr */ \
"ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \
VG_EXPAND_FRAME_BY_trashes_r3(144) \
/* arg11 */ \
"ld 3,88(11)\n\t" \
"std 3,128(1)\n\t" \
/* arg10 */ \
"ld 3,80(11)\n\t" \
"std 3,120(1)\n\t" \
/* arg9 */ \
"ld 3,72(11)\n\t" \
"std 3,112(1)\n\t" \
/* args1-8 */ \
"ld 3, 8(11)\n\t" /* arg1->r3 */ \
"ld 4, 16(11)\n\t" /* arg2->r4 */ \
"ld 5, 24(11)\n\t" /* arg3->r5 */ \
"ld 6, 32(11)\n\t" /* arg4->r6 */ \
"ld 7, 40(11)\n\t" /* arg5->r7 */ \
"ld 8, 48(11)\n\t" /* arg6->r8 */ \
"ld 9, 56(11)\n\t" /* arg7->r9 */ \
"ld 10, 64(11)\n\t" /* arg8->r10 */ \
"ld 11, 0(11)\n\t" /* target->r11 */ \
VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \
"mr 11,%1\n\t" \
"mr %0,3\n\t" \
"ld 2,-16(11)\n\t" /* restore tocptr */ \
VG_CONTRACT_FRAME_BY(144) \
VG_CONTRACT_FRAME_BY(512) \
: /*out*/ "=r" (_res) \
: /*in*/ "r" (&_argvec[2]) \
: /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \
); \
lval = (__typeof__(lval)) _res; \
} while (0)
#define CALL_FN_W_12W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \
arg7,arg8,arg9,arg10,arg11,arg12) \
do { \
volatile OrigFn _orig = (orig); \
volatile unsigned long _argvec[3+12]; \
volatile unsigned long _res; \
/* _argvec[0] holds current r2 across the call */ \
_argvec[1] = (unsigned long)_orig.r2; \
_argvec[2] = (unsigned long)_orig.nraddr; \
_argvec[2+1] = (unsigned long)arg1; \
_argvec[2+2] = (unsigned long)arg2; \
_argvec[2+3] = (unsigned long)arg3; \
_argvec[2+4] = (unsigned long)arg4; \
_argvec[2+5] = (unsigned long)arg5; \
_argvec[2+6] = (unsigned long)arg6; \
_argvec[2+7] = (unsigned long)arg7; \
_argvec[2+8] = (unsigned long)arg8; \
_argvec[2+9] = (unsigned long)arg9; \
_argvec[2+10] = (unsigned long)arg10; \
_argvec[2+11] = (unsigned long)arg11; \
_argvec[2+12] = (unsigned long)arg12; \
__asm__ volatile( \
"mr 11,%1\n\t" \
VG_EXPAND_FRAME_BY_trashes_r3(512) \
"std 2,-16(11)\n\t" /* save tocptr */ \
"ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \
VG_EXPAND_FRAME_BY_trashes_r3(144) \
/* arg12 */ \
"ld 3,96(11)\n\t" \
"std 3,136(1)\n\t" \
/* arg11 */ \
"ld 3,88(11)\n\t" \
"std 3,128(1)\n\t" \
/* arg10 */ \
"ld 3,80(11)\n\t" \
"std 3,120(1)\n\t" \
/* arg9 */ \
"ld 3,72(11)\n\t" \
"std 3,112(1)\n\t" \
/* args1-8 */ \
"ld 3, 8(11)\n\t" /* arg1->r3 */ \
"ld 4, 16(11)\n\t" /* arg2->r4 */ \
"ld 5, 24(11)\n\t" /* arg3->r5 */ \
"ld 6, 32(11)\n\t" /* arg4->r6 */ \
"ld 7, 40(11)\n\t" /* arg5->r7 */ \
"ld 8, 48(11)\n\t" /* arg6->r8 */ \
"ld 9, 56(11)\n\t" /* arg7->r9 */ \
"ld 10, 64(11)\n\t" /* arg8->r10 */ \
"ld 11, 0(11)\n\t" /* target->r11 */ \
VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \
"mr 11,%1\n\t" \
"mr %0,3\n\t" \
"ld 2,-16(11)\n\t" /* restore tocptr */ \
VG_CONTRACT_FRAME_BY(144) \
VG_CONTRACT_FRAME_BY(512) \
: /*out*/ "=r" (_res) \
: /*in*/ "r" (&_argvec[2]) \
: /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \
); \
lval = (__typeof__(lval)) _res; \
} while (0)
#endif /* PLAT_ppc64_aix5 */
/* ------------------------------------------------------------------ */
/* ARCHITECTURE INDEPENDENT MACROS for CLIENT REQUESTS. */
/* */
/* ------------------------------------------------------------------ */
/* Some request codes. There are many more of these, but most are not
exposed to end-user view. These are the public ones, all of the
form 0x1000 + small_number.
Core ones are in the range 0x00000000--0x0000ffff. The non-public
ones start at 0x2000.
*/
/* These macros are used by tools -- they must be public, but don't
embed them into other programs. */
#define VG_USERREQ_TOOL_BASE(a,b) \
((unsigned int)(((a)&0xff) << 24 | ((b)&0xff) << 16))
#define VG_IS_TOOL_USERREQ(a, b, v) \
(VG_USERREQ_TOOL_BASE(a,b) == ((v) & 0xffff0000))
/* !! ABIWARNING !! ABIWARNING !! ABIWARNING !! ABIWARNING !!
This enum comprises an ABI exported by Valgrind to programs
which use client requests. DO NOT CHANGE THE ORDER OF THESE
ENTRIES, NOR DELETE ANY -- add new ones at the end. */
typedef
enum { VG_USERREQ__RUNNING_ON_VALGRIND = 0x1001,
VG_USERREQ__DISCARD_TRANSLATIONS = 0x1002,
/* These allow any function to be called from the simulated
CPU but run on the real CPU. Nb: the first arg passed to
the function is always the ThreadId of the running
thread! So CLIENT_CALL0 actually requires a 1 arg
function, etc. */
VG_USERREQ__CLIENT_CALL0 = 0x1101,
VG_USERREQ__CLIENT_CALL1 = 0x1102,
VG_USERREQ__CLIENT_CALL2 = 0x1103,
VG_USERREQ__CLIENT_CALL3 = 0x1104,
/* Can be useful in regression testing suites -- eg. can
send Valgrind's output to /dev/null and still count
errors. */
VG_USERREQ__COUNT_ERRORS = 0x1201,
/* These are useful and can be interpreted by any tool that
tracks malloc() et al, by using vg_replace_malloc.c. */
VG_USERREQ__MALLOCLIKE_BLOCK = 0x1301,
VG_USERREQ__FREELIKE_BLOCK = 0x1302,
/* Memory pool support. */
VG_USERREQ__CREATE_MEMPOOL = 0x1303,
VG_USERREQ__DESTROY_MEMPOOL = 0x1304,
VG_USERREQ__MEMPOOL_ALLOC = 0x1305,
VG_USERREQ__MEMPOOL_FREE = 0x1306,
VG_USERREQ__MEMPOOL_TRIM = 0x1307,
VG_USERREQ__MOVE_MEMPOOL = 0x1308,
VG_USERREQ__MEMPOOL_CHANGE = 0x1309,
VG_USERREQ__MEMPOOL_EXISTS = 0x130a,
/* Allow printfs to valgrind log. */
/* The first two pass the va_list argument by value, which
assumes it is the same size as or smaller than a UWord,
which generally isn't the case. Hence are deprecated.
The second two pass the vargs by reference and so are
immune to this problem. */
/* both :: char* fmt, va_list vargs (DEPRECATED) */
VG_USERREQ__PRINTF = 0x1401,
VG_USERREQ__PRINTF_BACKTRACE = 0x1402,
/* both :: char* fmt, va_list* vargs */
VG_USERREQ__PRINTF_VALIST_BY_REF = 0x1403,
VG_USERREQ__PRINTF_BACKTRACE_VALIST_BY_REF = 0x1404,
/* Stack support. */
VG_USERREQ__STACK_REGISTER = 0x1501,
VG_USERREQ__STACK_DEREGISTER = 0x1502,
VG_USERREQ__STACK_CHANGE = 0x1503,
/* Wine support */
VG_USERREQ__LOAD_PDB_DEBUGINFO = 0x1601,
/* Querying of debug info. */
VG_USERREQ__MAP_IP_TO_SRCLOC = 0x1701
} Vg_ClientRequest;
#if !defined(__GNUC__)
# define __extension__ /* */
#endif
/*
* VALGRIND_DO_CLIENT_REQUEST_EXPR(): a C expression that invokes a Valgrind
* client request and whose value equals the client request result.
*/
#if defined(NVALGRIND)
#define VALGRIND_DO_CLIENT_REQUEST_EXPR( \
_zzq_default, _zzq_request, \
_zzq_arg1, _zzq_arg2, _zzq_arg3, _zzq_arg4, _zzq_arg5) \
(_zzq_default)
#else /*defined(NVALGRIND)*/
#if defined(_MSC_VER)
#define VALGRIND_DO_CLIENT_REQUEST_EXPR( \
_zzq_default, _zzq_request, \
_zzq_arg1, _zzq_arg2, _zzq_arg3, _zzq_arg4, _zzq_arg5) \
(vg_VALGRIND_DO_CLIENT_REQUEST_EXPR((uintptr_t)(_zzq_default), \
(_zzq_request), (uintptr_t)(_zzq_arg1), (uintptr_t)(_zzq_arg2), \
(uintptr_t)(_zzq_arg3), (uintptr_t)(_zzq_arg4), \
(uintptr_t)(_zzq_arg5)))
static __inline unsigned
vg_VALGRIND_DO_CLIENT_REQUEST_EXPR(uintptr_t _zzq_default,
unsigned _zzq_request, uintptr_t _zzq_arg1,
uintptr_t _zzq_arg2, uintptr_t _zzq_arg3,
uintptr_t _zzq_arg4, uintptr_t _zzq_arg5)
{
unsigned _zzq_rlval;
VALGRIND_DO_CLIENT_REQUEST(_zzq_rlval, _zzq_default, _zzq_request,
_zzq_arg1, _zzq_arg2, _zzq_arg3, _zzq_arg4, _zzq_arg5);
return _zzq_rlval;
}
#else /*defined(_MSC_VER)*/
#define VALGRIND_DO_CLIENT_REQUEST_EXPR( \
_zzq_default, _zzq_request, \
_zzq_arg1, _zzq_arg2, _zzq_arg3, _zzq_arg4, _zzq_arg5) \
(__extension__({unsigned int _zzq_rlval; \
VALGRIND_DO_CLIENT_REQUEST(_zzq_rlval, _zzq_default, _zzq_request, \
_zzq_arg1, _zzq_arg2, _zzq_arg3, _zzq_arg4, _zzq_arg5) \
_zzq_rlval; \
}))
#endif /*defined(_MSC_VER)*/
#endif /*defined(NVALGRIND)*/
/* Returns the number of Valgrinds this code is running under. That
is, 0 if running natively, 1 if running under Valgrind, 2 if
running under Valgrind which is running under another Valgrind,
etc. */
#define RUNNING_ON_VALGRIND \
VALGRIND_DO_CLIENT_REQUEST_EXPR(0 /* if not */, \
VG_USERREQ__RUNNING_ON_VALGRIND, \
0, 0, 0, 0, 0) \
/* Discard translation of code in the range [_qzz_addr .. _qzz_addr +
_qzz_len - 1]. Useful if you are debugging a JITter or some such,
since it provides a way to make sure valgrind will retranslate the
invalidated area. Returns no value. */
#define VALGRIND_DISCARD_TRANSLATIONS(_qzz_addr,_qzz_len) \
{unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__DISCARD_TRANSLATIONS, \
_qzz_addr, _qzz_len, 0, 0, 0); \
}
/* These requests are for getting Valgrind itself to print something.
Possibly with a backtrace. This is a really ugly hack. The return value
is the number of characters printed, excluding the "**<pid>** " part at the
start and the backtrace (if present). */
#if defined(NVALGRIND)
# define VALGRIND_PRINTF(...)
# define VALGRIND_PRINTF_BACKTRACE(...)
#else /* NVALGRIND */
#if !defined(_MSC_VER)
/* Modern GCC will optimize the static routine out if unused,
and unused attribute will shut down warnings about it. */
static int VALGRIND_PRINTF(const char *format, ...)
__attribute__((format(__printf__, 1, 2), __unused__));
#endif
static int
#if defined(_MSC_VER)
__inline
#endif
VALGRIND_PRINTF(const char *format, ...)
{
unsigned long _qzz_res;
va_list vargs;
va_start(vargs, format);
#if defined(_MSC_VER)
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0,
VG_USERREQ__PRINTF_VALIST_BY_REF,
(uintptr_t)format,
(uintptr_t)&vargs,
0, 0, 0);
#else
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0,
VG_USERREQ__PRINTF_VALIST_BY_REF,
(unsigned long)format,
(unsigned long)&vargs,
0, 0, 0);
#endif
va_end(vargs);
return (int)_qzz_res;
}
#if !defined(_MSC_VER)
static int VALGRIND_PRINTF_BACKTRACE(const char *format, ...)
__attribute__((format(__printf__, 1, 2), __unused__));
#endif
static int
#if defined(_MSC_VER)
__inline
#endif
VALGRIND_PRINTF_BACKTRACE(const char *format, ...)
{
unsigned long _qzz_res;
va_list vargs;
va_start(vargs, format);
#if defined(_MSC_VER)
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0,
VG_USERREQ__PRINTF_BACKTRACE_VALIST_BY_REF,
(uintptr_t)format,
(uintptr_t)&vargs,
0, 0, 0);
#else
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0,
VG_USERREQ__PRINTF_BACKTRACE_VALIST_BY_REF,
(unsigned long)format,
(unsigned long)&vargs,
0, 0, 0);
#endif
va_end(vargs);
return (int)_qzz_res;
}
#endif /* NVALGRIND */
/* These requests allow control to move from the simulated CPU to the
real CPU, calling an arbitary function.
Note that the current ThreadId is inserted as the first argument.
So this call:
VALGRIND_NON_SIMD_CALL2(f, arg1, arg2)
requires f to have this signature:
Word f(Word tid, Word arg1, Word arg2)
where "Word" is a word-sized type.
Note that these client requests are not entirely reliable. For example,
if you call a function with them that subsequently calls printf(),
there's a high chance Valgrind will crash. Generally, your prospects of
these working are made higher if the called function does not refer to
any global variables, and does not refer to any libc or other functions
(printf et al). Any kind of entanglement with libc or dynamic linking is
likely to have a bad outcome, for tricky reasons which we've grappled
with a lot in the past.
*/
#define VALGRIND_NON_SIMD_CALL0(_qyy_fn) \
__extension__ \
({unsigned long _qyy_res; \
VALGRIND_DO_CLIENT_REQUEST(_qyy_res, 0 /* default return */, \
VG_USERREQ__CLIENT_CALL0, \
_qyy_fn, \
0, 0, 0, 0); \
_qyy_res; \
})
#define VALGRIND_NON_SIMD_CALL1(_qyy_fn, _qyy_arg1) \
__extension__ \
({unsigned long _qyy_res; \
VALGRIND_DO_CLIENT_REQUEST(_qyy_res, 0 /* default return */, \
VG_USERREQ__CLIENT_CALL1, \
_qyy_fn, \
_qyy_arg1, 0, 0, 0); \
_qyy_res; \
})
#define VALGRIND_NON_SIMD_CALL2(_qyy_fn, _qyy_arg1, _qyy_arg2) \
__extension__ \
({unsigned long _qyy_res; \
VALGRIND_DO_CLIENT_REQUEST(_qyy_res, 0 /* default return */, \
VG_USERREQ__CLIENT_CALL2, \
_qyy_fn, \
_qyy_arg1, _qyy_arg2, 0, 0); \
_qyy_res; \
})
#define VALGRIND_NON_SIMD_CALL3(_qyy_fn, _qyy_arg1, _qyy_arg2, _qyy_arg3) \
__extension__ \
({unsigned long _qyy_res; \
VALGRIND_DO_CLIENT_REQUEST(_qyy_res, 0 /* default return */, \
VG_USERREQ__CLIENT_CALL3, \
_qyy_fn, \
_qyy_arg1, _qyy_arg2, \
_qyy_arg3, 0); \
_qyy_res; \
})
/* Counts the number of errors that have been recorded by a tool. Nb:
the tool must record the errors with VG_(maybe_record_error)() or
VG_(unique_error)() for them to be counted. */
#define VALGRIND_COUNT_ERRORS \
__extension__ \
({unsigned int _qyy_res; \
VALGRIND_DO_CLIENT_REQUEST(_qyy_res, 0 /* default return */, \
VG_USERREQ__COUNT_ERRORS, \
0, 0, 0, 0, 0); \
_qyy_res; \
})
/* Several Valgrind tools (Memcheck, Massif, Helgrind, DRD) rely on knowing
when heap blocks are allocated in order to give accurate results. This
happens automatically for the standard allocator functions such as
malloc(), calloc(), realloc(), memalign(), new, new[], free(), delete,
delete[], etc.
But if your program uses a custom allocator, this doesn't automatically
happen, and Valgrind will not do as well. For example, if you allocate
superblocks with mmap() and then allocates chunks of the superblocks, all
Valgrind's observations will be at the mmap() level and it won't know that
the chunks should be considered separate entities. In Memcheck's case,
that means you probably won't get heap block overrun detection (because
there won't be redzones marked as unaddressable) and you definitely won't
get any leak detection.
The following client requests allow a custom allocator to be annotated so
that it can be handled accurately by Valgrind.
VALGRIND_MALLOCLIKE_BLOCK marks a region of memory as having been allocated
by a malloc()-like function. For Memcheck (an illustrative case), this
does two things:
- It records that the block has been allocated. This means any addresses
within the block mentioned in error messages will be
identified as belonging to the block. It also means that if the block
isn't freed it will be detected by the leak checker.
- It marks the block as being addressable and undefined (if 'is_zeroed' is
not set), or addressable and defined (if 'is_zeroed' is set). This
controls how accesses to the block by the program are handled.
'addr' is the start of the usable block (ie. after any
redzone), 'sizeB' is its size. 'rzB' is the redzone size if the allocator
can apply redzones -- these are blocks of padding at the start and end of
each block. Adding redzones is recommended as it makes it much more likely
Valgrind will spot block overruns. `is_zeroed' indicates if the memory is
zeroed (or filled with another predictable value), as is the case for
calloc().
VALGRIND_MALLOCLIKE_BLOCK should be put immediately after the point where a
heap block -- that will be used by the client program -- is allocated.
It's best to put it at the outermost level of the allocator if possible;
for example, if you have a function my_alloc() which calls
internal_alloc(), and the client request is put inside internal_alloc(),
stack traces relating to the heap block will contain entries for both
my_alloc() and internal_alloc(), which is probably not what you want.
For Memcheck users: if you use VALGRIND_MALLOCLIKE_BLOCK to carve out
custom blocks from within a heap block, B, that has been allocated with
malloc/calloc/new/etc, then block B will be *ignored* during leak-checking
-- the custom blocks will take precedence.
VALGRIND_FREELIKE_BLOCK is the partner to VALGRIND_MALLOCLIKE_BLOCK. For
Memcheck, it does two things:
- It records that the block has been deallocated. This assumes that the
block was annotated as having been allocated via
VALGRIND_MALLOCLIKE_BLOCK. Otherwise, an error will be issued.
- It marks the block as being unaddressable.
VALGRIND_FREELIKE_BLOCK should be put immediately after the point where a
heap block is deallocated.
In many cases, these two client requests will not be enough to get your
allocator working well with Memcheck. More specifically, if your allocator
writes to freed blocks in any way then a VALGRIND_MAKE_MEM_UNDEFINED call
will be necessary to mark the memory as addressable just before the zeroing
occurs, otherwise you'll get a lot of invalid write errors. For example,
you'll need to do this if your allocator recycles freed blocks, but it
zeroes them before handing them back out (via VALGRIND_MALLOCLIKE_BLOCK).
Alternatively, if your allocator reuses freed blocks for allocator-internal
data structures, VALGRIND_MAKE_MEM_UNDEFINED calls will also be necessary.
Really, what's happening is a blurring of the lines between the client
program and the allocator... after VALGRIND_FREELIKE_BLOCK is called, the
memory should be considered unaddressable to the client program, but the
allocator knows more than the rest of the client program and so may be able
to safely access it. Extra client requests are necessary for Valgrind to
understand the distinction between the allocator and the rest of the
program.
Note: there is currently no VALGRIND_REALLOCLIKE_BLOCK client request; it
has to be emulated with MALLOCLIKE/FREELIKE and memory copying.
Ignored if addr == 0.
*/
#define VALGRIND_MALLOCLIKE_BLOCK(addr, sizeB, rzB, is_zeroed) \
{unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__MALLOCLIKE_BLOCK, \
addr, sizeB, rzB, is_zeroed, 0); \
}
/* See the comment for VALGRIND_MALLOCLIKE_BLOCK for details.
Ignored if addr == 0.
*/
#define VALGRIND_FREELIKE_BLOCK(addr, rzB) \
{unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__FREELIKE_BLOCK, \
addr, rzB, 0, 0, 0); \
}
/* Create a memory pool. */
#define VALGRIND_CREATE_MEMPOOL(pool, rzB, is_zeroed) \
{unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__CREATE_MEMPOOL, \
pool, rzB, is_zeroed, 0, 0); \
}
/* Destroy a memory pool. */
#define VALGRIND_DESTROY_MEMPOOL(pool) \
{unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__DESTROY_MEMPOOL, \
pool, 0, 0, 0, 0); \
}
/* Associate a piece of memory with a memory pool. */
#define VALGRIND_MEMPOOL_ALLOC(pool, addr, size) \
{unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__MEMPOOL_ALLOC, \
pool, addr, size, 0, 0); \
}
/* Disassociate a piece of memory from a memory pool. */
#define VALGRIND_MEMPOOL_FREE(pool, addr) \
{unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__MEMPOOL_FREE, \
pool, addr, 0, 0, 0); \
}
/* Disassociate any pieces outside a particular range. */
#define VALGRIND_MEMPOOL_TRIM(pool, addr, size) \
{unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__MEMPOOL_TRIM, \
pool, addr, size, 0, 0); \
}
/* Resize and/or move a piece associated with a memory pool. */
#define VALGRIND_MOVE_MEMPOOL(poolA, poolB) \
{unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__MOVE_MEMPOOL, \
poolA, poolB, 0, 0, 0); \
}
/* Resize and/or move a piece associated with a memory pool. */
#define VALGRIND_MEMPOOL_CHANGE(pool, addrA, addrB, size) \
{unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__MEMPOOL_CHANGE, \
pool, addrA, addrB, size, 0); \
}
/* Return 1 if a mempool exists, else 0. */
#define VALGRIND_MEMPOOL_EXISTS(pool) \
__extension__ \
({unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__MEMPOOL_EXISTS, \
pool, 0, 0, 0, 0); \
_qzz_res; \
})
/* Mark a piece of memory as being a stack. Returns a stack id. */
#define VALGRIND_STACK_REGISTER(start, end) \
__extension__ \
({unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__STACK_REGISTER, \
start, end, 0, 0, 0); \
_qzz_res; \
})
/* Unmark the piece of memory associated with a stack id as being a
stack. */
#define VALGRIND_STACK_DEREGISTER(id) \
{unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__STACK_DEREGISTER, \
id, 0, 0, 0, 0); \
}
/* Change the start and end address of the stack id. */
#define VALGRIND_STACK_CHANGE(id, start, end) \
{unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__STACK_CHANGE, \
id, start, end, 0, 0); \
}
/* Load PDB debug info for Wine PE image_map. */
#define VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta) \
{unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__LOAD_PDB_DEBUGINFO, \
fd, ptr, total_size, delta, 0); \
}
/* Map a code address to a source file name and line number. buf64
must point to a 64-byte buffer in the caller's address space. The
result will be dumped in there and is guaranteed to be zero
terminated. If no info is found, the first byte is set to zero. */
#define VALGRIND_MAP_IP_TO_SRCLOC(addr, buf64) \
{unsigned int _qzz_res; \
VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
VG_USERREQ__MAP_IP_TO_SRCLOC, \
addr, buf64, 0, 0, 0); \
}
#undef PLAT_x86_linux
#undef PLAT_amd64_linux
#undef PLAT_ppc32_linux
#undef PLAT_ppc64_linux
#undef PLAT_arm_linux
#undef PLAT_ppc32_aix5
#undef PLAT_ppc64_aix5
#endif /* __VALGRIND_H */