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/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _LINKER_DEBUG_H_
#define _LINKER_DEBUG_H_
// You can increase the verbosity of debug traces by defining the LD_DEBUG
// environment variable to a numeric value from 0 to 2 (corresponding to
// INFO, TRACE, and DEBUG calls in the source). This will only
// affect new processes being launched.
// By default, traces are sent to logcat, with the "linker" tag. You can
// change this to go to stdout instead by setting the definition of
// LINKER_DEBUG_TO_LOG to 0.
#define LINKER_DEBUG_TO_LOG 1
#define TRACE_DEBUG 1
#define DO_TRACE_LOOKUP 1
#define DO_TRACE_RELO 1
#define DO_TRACE_IFUNC 1
#define TIMING 0
#define STATS 0
#define COUNT_PAGES 0
/*********************************************************************
* You shouldn't need to modify anything below unless you are adding
* more debugging information.
*
* To enable/disable specific debug options, change the defines above
*********************************************************************/
#include "private/libc_logging.h"
__LIBC_HIDDEN__ extern int g_ld_debug_verbosity;
#if LINKER_DEBUG_TO_LOG
#define _PRINTVF(v, x...) \
do { \
if (g_ld_debug_verbosity > (v)) __libc_format_log(5-(v), "linker", x); \
} while (0)
#else /* !LINKER_DEBUG_TO_LOG */
#define _PRINTVF(v, x...) \
do { \
if (g_ld_debug_verbosity > (v)) { __libc_format_fd(1, x); write(1, "\n", 1); } \
} while (0)
#endif /* !LINKER_DEBUG_TO_LOG */
#define PRINT(x...) _PRINTVF(-1, x)
#define INFO(x...) _PRINTVF(0, x)
#define TRACE(x...) _PRINTVF(1, x)
#if TRACE_DEBUG
#define DEBUG(x...) _PRINTVF(2, "DEBUG: " x)
#else /* !TRACE_DEBUG */
#define DEBUG(x...) do {} while (0)
#endif /* TRACE_DEBUG */
#define TRACE_TYPE(t, x...) do { if (DO_TRACE_##t) { TRACE(x); } } while (0)
#if COUNT_PAGES
extern uint32_t bitmask[];
#if defined(__LP64__)
#define MARK(offset) \
do { \
if ((((offset) >> 12) >> 5) < 4096) \
bitmask[((offset) >> 12) >> 5] |= (1 << (((offset) >> 12) & 31)); \
} while (0)
#else
#define MARK(offset) \
do { \
bitmask[((offset) >> 12) >> 3] |= (1 << (((offset) >> 12) & 7)); \
} while (0)
#endif
#else
#define MARK(x) do {} while (0)
#endif
#endif /* _LINKER_DEBUG_H_ */
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