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" 68 extern int debug_verbosity; 69 #if LINKER_DEBUG_TO_LOG 70 extern 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 */ 76 extern 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 4 113 114 struct _link_stats { 115 int reloc[NUM_RELOC_STATS]; 116 }; 117 extern 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 136 extern 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