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 0 39 #define DO_TRACE_RELO 0 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 /* Only use printf() during debugging. We have seen occasional memory 59 * corruption when the linker uses printf(). 60 */ 61 #if LINKER_DEBUG 62 extern int debug_verbosity; 63 #warning "*** LINKER IS USING printf(); DO NOT CHECK THIS IN ***" 64 #define _PRINTVF(v,f,x...) \ 65 do { \ 66 (debug_verbosity > (v)) && (printf(x), ((f) && fflush(stdout))); \ 67 } while (0) 68 #else /* !LINKER_DEBUG */ 69 #define _PRINTVF(v,f,x...) do {} while(0) 70 #endif /* LINKER_DEBUG */ 71 72 #define PRINT(x...) _PRINTVF(-1, FALSE, x) 73 #define INFO(x...) _PRINTVF(0, TRUE, x) 74 #define TRACE(x...) _PRINTVF(1, TRUE, x) 75 #define WARN(fmt,args...) \ 76 _PRINTVF(-1, TRUE, "%s:%d| WARNING: " fmt, __FILE__, __LINE__, ## args) 77 #define ERROR(fmt,args...) \ 78 _PRINTVF(-1, TRUE, "%s:%d| ERROR: " fmt, __FILE__, __LINE__, ## args) 79 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 99 100 struct _link_stats { 101 int reloc[NUM_RELOC_STATS]; 102 }; 103 extern 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 122 extern 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