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