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linker_debug.h
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linker_debug.h
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/*
* Copyright (C) 2008-2010 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_
#include <stdio.h>
#ifndef LINKER_DEBUG
#error LINKER_DEBUG should be defined to either 1 or 0 in Android.mk
#endif
/* set LINKER_DEBUG_TO_LOG to 1 to send the logs to logcat,
* or 0 to use stdout instead.
*/
#define LINKER_DEBUG_TO_LOG 1
#define TRACE_DEBUG 1
#define DO_TRACE_LOOKUP 1
#define DO_TRACE_RELO 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
*********************************************************************/
/*********************************************************************/
#undef TRUE
#undef FALSE
#define TRUE 1
#define FALSE 0
/* Only use printf() during debugging. We have seen occasional memory
* corruption when the linker uses printf().
*/
#if LINKER_DEBUG
#include "linker_format.h"
extern int debug_verbosity;
#if LINKER_DEBUG_TO_LOG
extern int format_log(int, const char *, const char *, ...);
#define _PRINTVF(v,f,x...) \
do { \
if (debug_verbosity > (v)) format_log(5-(v),"linker",x); \
} while (0)
#else /* !LINKER_DEBUG_TO_LOG */
extern int format_fd(int, const char *, ...);
#define _PRINTVF(v,f,x...) \
do { \
if (debug_verbosity > (v)) format_fd(1, x); \
} while (0)
#endif /* !LINKER_DEBUG_TO_LOG */
#else /* !LINKER_DEBUG */
#define _PRINTVF(v,f,x...) do {} while(0)
#endif /* LINKER_DEBUG */
#define PRINT(x...) _PRINTVF(-1, FALSE, x)
#define INFO(x...) _PRINTVF(0, TRUE, x)
#define TRACE(x...) _PRINTVF(1, TRUE, x)
#define WARN(fmt,args...) \
_PRINTVF(-1, TRUE, "%s:%d| WARNING: " fmt, __FILE__, __LINE__, ## args)
#define ERROR(fmt,args...) \
_PRINTVF(-1, TRUE, "%s:%d| ERROR: " fmt, __FILE__, __LINE__, ## args)
#if TRACE_DEBUG
#define DEBUG(x...) _PRINTVF(2, TRUE, "DEBUG: " x)
#else /* !TRACE_DEBUG */
#define DEBUG(x...) do {} while (0)
#endif /* TRACE_DEBUG */
#if LINKER_DEBUG
#define TRACE_TYPE(t,x...) do { if (DO_TRACE_##t) { TRACE(x); } } while (0)
#else /* !LINKER_DEBUG */
#define TRACE_TYPE(t,x...) do {} while (0)
#endif /* LINKER_DEBUG */
#if STATS
#define RELOC_ABSOLUTE 0
#define RELOC_RELATIVE 1
#define RELOC_COPY 2
#define RELOC_SYMBOL 3
#define NUM_RELOC_STATS 4
struct _link_stats {
int reloc[NUM_RELOC_STATS];
};
extern struct _link_stats linker_stats;
#define COUNT_RELOC(type) \
do { if (type >= 0 && type < NUM_RELOC_STATS) { \
linker_stats.reloc[type] += 1; \
} else { \
PRINT("Unknown reloc stat requested\n"); \
} \
} while(0)
#else /* !STATS */
#define COUNT_RELOC(type) do {} while(0)
#endif /* STATS */
#if TIMING
#undef WARN
#define WARN(x...) do {} while (0)
#endif /* TIMING */
#if COUNT_PAGES
extern unsigned bitmask[];
#define MARK(offset) do { \
bitmask[((offset) >> 12) >> 3] |= (1 << (((offset) >> 12) & 7)); \
} while(0)
#else
#define MARK(x) do {} while (0)
#endif
#define DEBUG_DUMP_PHDR(phdr, name, pid) do { \
DEBUG("%5d %s (phdr = 0x%08x)\n", (pid), (name), (unsigned)(phdr)); \
DEBUG("\t\tphdr->offset = 0x%08x\n", (unsigned)((phdr)->p_offset)); \
DEBUG("\t\tphdr->p_vaddr = 0x%08x\n", (unsigned)((phdr)->p_vaddr)); \
DEBUG("\t\tphdr->p_paddr = 0x%08x\n", (unsigned)((phdr)->p_paddr)); \
DEBUG("\t\tphdr->p_filesz = 0x%08x\n", (unsigned)((phdr)->p_filesz)); \
DEBUG("\t\tphdr->p_memsz = 0x%08x\n", (unsigned)((phdr)->p_memsz)); \
DEBUG("\t\tphdr->p_flags = 0x%08x\n", (unsigned)((phdr)->p_flags)); \
DEBUG("\t\tphdr->p_align = 0x%08x\n", (unsigned)((phdr)->p_align)); \
} while (0)
#endif /* _LINKER_DEBUG_H_ */