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Add a new client request, VALGRIND_MAP_IP_TO_SRCLOC, so that clients

Browse Source 
can query their own debug info.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11269
This commit is contained in:
Julian Seward 2010-08-20 18:22:07 +00:00
parent 9a8dd3161a
commit 3195fb3d5d
2 changed files with 44 additions and 1 deletions
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29
coregrind/m_scheduler/scheduler.c
View File

@ -1546,6 +1546,35 @@ void do_client_request ( ThreadId tid )
SET_CLREQ_RETVAL( tid, 0 ); /* return value is meaningless */
break;
case VG_USERREQ__MAP_IP_TO_SRCLOC: {
Addr ip = arg[1];
UChar* buf64 = (UChar*)arg[2];
VG_(memset)(buf64, 0, 64);
UInt linenum = 0;
Bool ok = VG_(get_filename_linenum)(
ip, &buf64[0], 50, NULL, 0, NULL, &linenum
);
if (ok) {
/* Find the terminating zero in the first 50 bytes. */
UInt i;
for (i = 0; i < 50; i++) {
if (buf64[i] == 0)
break;
}
/* We must find a zero somewhere in 0 .. 49. Else
VG_(get_filename_linenum) is not properly zero
terminating. */
vg_assert(i < 50);
VG_(sprintf)(&buf64[i], ":%u", linenum);
} else {
buf64[0] = 0;
}
SET_CLREQ_RETVAL( tid, 0 ); /* return value is meaningless */
break;
}
case VG_USERREQ__MALLOCLIKE_BLOCK:
case VG_USERREQ__FREELIKE_BLOCK:
// Ignore them if the addr is NULL; otherwise pass onto the tool.

16
include/valgrind.h
View File

@ -4159,7 +4159,10 @@ typedef
VG_USERREQ__STACK_CHANGE = 0x1503,
/* Wine support */
VG_USERREQ__LOAD_PDB_DEBUGINFO = 0x1601
VG_USERREQ__LOAD_PDB_DEBUGINFO = 0x1601,
/* Querying of debug info. */
VG_USERREQ__MAP_IP_TO_SRCLOC = 0x1701
} Vg_ClientRequest;
#if !defined(__GNUC__)
@ -4524,6 +4527,17 @@ VALGRIND_PRINTF_BACKTRACE(const char *format, ...)
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