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106 lines
3.7 KiB
106 lines
3.7 KiB
/* |
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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 <unistd.h> |
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#include <async_safe/log.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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#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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