linker_debug.h revision 9f65adf2ba3bb15feb8b7a7b3eef788df3fd270e
1/* 2 * Copyright (C) 2008 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/* WARNING: For linker debugging only.. Be careful not to leave any of 35 * this on when submitting back to repository */ 36#define LINKER_DEBUG 0 37#define TRACE_DEBUG 0 38#define DO_TRACE_LOOKUP 1 39#define DO_TRACE_RELO 1 40#define TIMING 0 41#define STATS 0 42#define COUNT_PAGES 0 43 44/********************************************************************* 45 * You shouldn't need to modify anything below unless you are adding 46 * more debugging information. 47 * 48 * To enable/disable specific debug options, change the defines above 49 *********************************************************************/ 50 51 52/*********************************************************************/ 53#undef TRUE 54#undef FALSE 55#define TRUE 1 56#define FALSE 0 57 58 59#define __PRINTVF(v,f,x...) do { \ 60 (debug_verbosity > (v)) && (printf(x), ((f) && fflush(stdout))); \ 61 } while (0) 62/* Only use printf() during debugging. We have seen occasional memory 63 * corruption when the linker uses printf(). 64 */ 65#if LINKER_DEBUG 66extern int debug_verbosity; 67#warning "*** LINKER IS USING printf(); DO NOT CHECK THIS IN ***" 68#define _PRINTVF(v,f,x...) __PRINTVF(v,f,x) 69#else /* !LINKER_DEBUG */ 70#define _PRINTVF(v,f,x...) do {} while(0) 71#endif /* LINKER_DEBUG */ 72 73#define PRINT(x...) _PRINTVF(-1, FALSE, x) 74#define INFO(x...) _PRINTVF(0, TRUE, x) 75#define TRACE(x...) _PRINTVF(1, TRUE, x) 76#define WARN(fmt,args...) \ 77 _PRINTVF(-1, TRUE, "%s:%d| WARNING: " fmt, __FILE__, __LINE__, ## args) 78#define ERROR(fmt,args...) \ 79 __PRINTVF(-1, TRUE, "%s:%d| ERROR: " fmt, __FILE__, __LINE__, ## args) 80 81#if TRACE_DEBUG 82#define DEBUG(x...) _PRINTVF(2, TRUE, "DEBUG: " x) 83#else /* !TRACE_DEBUG */ 84#define DEBUG(x...) do {} while (0) 85#endif /* TRACE_DEBUG */ 86 87#if LINKER_DEBUG 88#define TRACE_TYPE(t,x...) do { if (DO_TRACE_##t) { TRACE(x); } } while (0) 89#else /* !LINKER_DEBUG */ 90#define TRACE_TYPE(t,x...) do {} while (0) 91#endif /* LINKER_DEBUG */ 92 93#if STATS 94#define RELOC_ABSOLUTE 0 95#define RELOC_RELATIVE 1 96#define RELOC_COPY 2 97#define RELOC_SYMBOL 3 98#define NUM_RELOC_STATS 4 99 100struct _link_stats { 101 int reloc[NUM_RELOC_STATS]; 102}; 103extern struct _link_stats linker_stats; 104 105#define COUNT_RELOC(type) \ 106 do { if (type >= 0 && type < NUM_RELOC_STATS) { \ 107 linker_stats.reloc[type] += 1; \ 108 } else { \ 109 PRINT("Unknown reloc stat requested\n"); \ 110 } \ 111 } while(0) 112#else /* !STATS */ 113#define COUNT_RELOC(type) do {} while(0) 114#endif /* STATS */ 115 116#if TIMING 117#undef WARN 118#define WARN(x...) do {} while (0) 119#endif /* TIMING */ 120 121#if COUNT_PAGES 122extern unsigned bitmask[]; 123#define MARK(offset) do { \ 124 bitmask[((offset) >> 12) >> 3] |= (1 << (((offset) >> 12) & 7)); \ 125 } while(0) 126#else 127#define MARK(x) do {} while (0) 128#endif 129 130#define DEBUG_DUMP_PHDR(phdr, name, pid) do { \ 131 DEBUG("%5d %s (phdr = 0x%08x)\n", (pid), (name), (unsigned)(phdr)); \ 132 DEBUG("\t\tphdr->offset = 0x%08x\n", (unsigned)((phdr)->p_offset)); \ 133 DEBUG("\t\tphdr->p_vaddr = 0x%08x\n", (unsigned)((phdr)->p_vaddr)); \ 134 DEBUG("\t\tphdr->p_paddr = 0x%08x\n", (unsigned)((phdr)->p_paddr)); \ 135 DEBUG("\t\tphdr->p_filesz = 0x%08x\n", (unsigned)((phdr)->p_filesz)); \ 136 DEBUG("\t\tphdr->p_memsz = 0x%08x\n", (unsigned)((phdr)->p_memsz)); \ 137 DEBUG("\t\tphdr->p_flags = 0x%08x\n", (unsigned)((phdr)->p_flags)); \ 138 DEBUG("\t\tphdr->p_align = 0x%08x\n", (unsigned)((phdr)->p_align)); \ 139 } while (0) 140 141#endif /* _LINKER_DEBUG_H_ */ 142