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 // You can increase the verbosity of debug traces by defining the LD_DEBUG 33 // environment variable to a numeric value from 0 to 2 (corresponding to 34 // INFO, TRACE, and DEBUG calls in the source). This will only 35 // affect new processes being launched. 36 37 // By default, traces are sent to logcat, with the "linker" tag. You can 38 // change this to go to stdout instead by setting the definition of 39 // LINKER_DEBUG_TO_LOG to 0. 40 #define LINKER_DEBUG_TO_LOG 1 41 42 #define TRACE_DEBUG 1 43 #define DO_TRACE_LOOKUP 1 44 #define DO_TRACE_RELO 1 45 #define DO_TRACE_IFUNC 1 46 #define TIMING 0 47 #define STATS 0 48 #define COUNT_PAGES 0 49 50 /********************************************************************* 51 * You shouldn't need to modify anything below unless you are adding 52 * more debugging information. 53 * 54 * To enable/disable specific debug options, change the defines above 55 *********************************************************************/ 56 57 #include "private/libc_logging.h" 58 59 __LIBC_HIDDEN__ extern int g_ld_debug_verbosity; 60 61 #if LINKER_DEBUG_TO_LOG 62 #define _PRINTVF(v, x...) \ 63 do { \ 64 if (g_ld_debug_verbosity > (v)) __libc_format_log(5-(v), "linker", x); \ 65 } while (0) 66 #else /* !LINKER_DEBUG_TO_LOG */ 67 #define _PRINTVF(v, x...) \ 68 do { \ 69 if (g_ld_debug_verbosity > (v)) { __libc_format_fd(1, x); write(1, "\n", 1); } \ 70 } while (0) 71 #endif /* !LINKER_DEBUG_TO_LOG */ 72 73 #define PRINT(x...) _PRINTVF(-1, x) 74 #define INFO(x...) _PRINTVF(0, x) 75 #define TRACE(x...) _PRINTVF(1, x) 76 77 #if TRACE_DEBUG 78 #define DEBUG(x...) _PRINTVF(2, "DEBUG: " x) 79 #else /* !TRACE_DEBUG */ 80 #define DEBUG(x...) do {} while (0) 81 #endif /* TRACE_DEBUG */ 82 83 #define TRACE_TYPE(t, x...) do { if (DO_TRACE_##t) { TRACE(x); } } while (0) 84 85 #endif /* _LINKER_DEBUG_H_ */ 86
