1/* 2 * Copyright (C) 2008-2010 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#ifndef _LINKER_DEBUG_H_ 30#define _LINKER_DEBUG_H_ 31 32#include <stdio.h> 33 34#ifndef LINKER_DEBUG 35#error LINKER_DEBUG should be defined to either 1 or 0 in Android.mk 36#endif 37 38/* set LINKER_DEBUG_TO_LOG to 1 to send the logs to logcat, 39 * or 0 to use stdout instead. 40 */ 41#define LINKER_DEBUG_TO_LOG 1 42#define TRACE_DEBUG 1 43#define DO_TRACE_LOOKUP 1 44#define DO_TRACE_RELO 1 45#define TIMING 0 46#define STATS 0 47#define COUNT_PAGES 0 48 49/********************************************************************* 50 * You shouldn't need to modify anything below unless you are adding 51 * more debugging information. 52 * 53 * To enable/disable specific debug options, change the defines above 54 *********************************************************************/ 55 56 57/*********************************************************************/ 58#undef TRUE 59#undef FALSE 60#define TRUE 1 61#define FALSE 0 62 63/* Only use printf() during debugging. We have seen occasional memory 64 * corruption when the linker uses printf(). 65 */ 66#if LINKER_DEBUG 67#include "linker_format.h" 68extern int debug_verbosity; 69#if LINKER_DEBUG_TO_LOG 70extern int format_log(int, const char *, const char *, ...); 71#define _PRINTVF(v,f,x...) \ 72 do { \ 73 if (debug_verbosity > (v)) format_log(5-(v),"linker",x); \ 74 } while (0) 75#else /* !LINKER_DEBUG_TO_LOG */ 76extern int format_fd(int, const char *, ...); 77#define _PRINTVF(v,f,x...) \ 78 do { \ 79 if (debug_verbosity > (v)) format_fd(1, x); \ 80 } while (0) 81#endif /* !LINKER_DEBUG_TO_LOG */ 82#else /* !LINKER_DEBUG */ 83#define _PRINTVF(v,f,x...) do {} while(0) 84#endif /* LINKER_DEBUG */ 85 86#define PRINT(x...) _PRINTVF(-1, FALSE, x) 87#define INFO(x...) _PRINTVF(0, TRUE, x) 88#define TRACE(x...) _PRINTVF(1, TRUE, x) 89#define WARN(fmt,args...) \ 90 _PRINTVF(-1, TRUE, "%s:%d| WARNING: " fmt, __FILE__, __LINE__, ## args) 91#define ERROR(fmt,args...) \ 92 _PRINTVF(-1, TRUE, "%s:%d| ERROR: " fmt, __FILE__, __LINE__, ## args) 93 94 95#if TRACE_DEBUG 96#define DEBUG(x...) _PRINTVF(2, TRUE, "DEBUG: " x) 97#else /* !TRACE_DEBUG */ 98#define DEBUG(x...) do {} while (0) 99#endif /* TRACE_DEBUG */ 100 101#if LINKER_DEBUG 102#define TRACE_TYPE(t,x...) do { if (DO_TRACE_##t) { TRACE(x); } } while (0) 103#else /* !LINKER_DEBUG */ 104#define TRACE_TYPE(t,x...) do {} while (0) 105#endif /* LINKER_DEBUG */ 106 107#if STATS 108#define RELOC_ABSOLUTE 0 109#define RELOC_RELATIVE 1 110#define RELOC_COPY 2 111#define RELOC_SYMBOL 3 112#define NUM_RELOC_STATS 4 113 114struct _link_stats { 115 int reloc[NUM_RELOC_STATS]; 116}; 117extern struct _link_stats linker_stats; 118 119#define COUNT_RELOC(type) \ 120 do { if (type >= 0 && type < NUM_RELOC_STATS) { \ 121 linker_stats.reloc[type] += 1; \ 122 } else { \ 123 PRINT("Unknown reloc stat requested\n"); \ 124 } \ 125 } while(0) 126#else /* !STATS */ 127#define COUNT_RELOC(type) do {} while(0) 128#endif /* STATS */ 129 130#if TIMING 131#undef WARN 132#define WARN(x...) do {} while (0) 133#endif /* TIMING */ 134 135#if COUNT_PAGES 136extern unsigned bitmask[]; 137#define MARK(offset) do { \ 138 bitmask[((offset) >> 12) >> 3] |= (1 << (((offset) >> 12) & 7)); \ 139 } while(0) 140#else 141#define MARK(x) do {} while (0) 142#endif 143 144#define DEBUG_DUMP_PHDR(phdr, name, pid) do { \ 145 DEBUG("%5d %s (phdr = 0x%08x)\n", (pid), (name), (unsigned)(phdr)); \ 146 DEBUG("\t\tphdr->offset = 0x%08x\n", (unsigned)((phdr)->p_offset)); \ 147 DEBUG("\t\tphdr->p_vaddr = 0x%08x\n", (unsigned)((phdr)->p_vaddr)); \ 148 DEBUG("\t\tphdr->p_paddr = 0x%08x\n", (unsigned)((phdr)->p_paddr)); \ 149 DEBUG("\t\tphdr->p_filesz = 0x%08x\n", (unsigned)((phdr)->p_filesz)); \ 150 DEBUG("\t\tphdr->p_memsz = 0x%08x\n", (unsigned)((phdr)->p_memsz)); \ 151 DEBUG("\t\tphdr->p_flags = 0x%08x\n", (unsigned)((phdr)->p_flags)); \ 152 DEBUG("\t\tphdr->p_align = 0x%08x\n", (unsigned)((phdr)->p_align)); \ 153 } while (0) 154 155#endif /* _LINKER_DEBUG_H_ */ 156