78cd283480
COUNT_PAGES tries to count the pages dirtied by relocations, but this implementation is broken because it's merging rel->r_offset values from multiple DSOs. The functionality is hard to use, because it requires rebuilding the linker, and it's not obvious to me that it should belong in the linker. If we do want it, we should make it work without rebuilding the linker. Similar information can currently be collected by parsing the result of `readelf -r` on a binary (or a set of binaries). Bug: none Test: m linker libc com.android.runtime ; adb sync ; run something Change-Id: I760fb6ea4ea3d1927eb5145cdf4ca133851d69b4
84 lines
3.2 KiB
C
84 lines
3.2 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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#pragma once
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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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/*********************************************************************
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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 <unistd.h>
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#include <async_safe/log.h>
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#include <async_safe/CHECK.h>
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__LIBC_HIDDEN__ extern int g_ld_debug_verbosity;
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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)) async_safe_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)) { async_safe_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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