1 /* Copyright (C) 2002, 2004 Red Hat, Inc. 2 Written by Ulrich Drepper <drepper (at) redhat.com>, 2002. 3 4 This program is Open Source software; you can redistribute it and/or 5 modify it under the terms of the Open Software License version 1.0 as 6 published by the Open Source Initiative. 7 8 You should have received a copy of the Open Software License along 9 with this program; if not, you may obtain a copy of the Open Software 10 License version 1.0 from http://www.opensource.org/licenses/osl.php or 11 by writing the Open Source Initiative c/o Lawrence Rosen, Esq., 12 3001 King Ranch Road, Ukiah, CA 95482. */ 13 14 #include <fcntl.h> 15 #include <inttypes.h> 16 #include <libelf.h> 17 #include <libdw.h> 18 #include <stdio.h> 19 #include <unistd.h> 20 21 22 int 23 main (int argc, char *argv[]) 24 { 25 int result = 0; 26 int cnt; 27 28 for (cnt = 1; cnt < argc; ++cnt) 29 { 30 int fd = open (argv[cnt], O_RDONLY); 31 32 Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ); 33 if (dbg == NULL) 34 { 35 printf ("%s not usable: %s\n", argv[cnt], dwarf_errmsg (-1)); 36 close (fd); 37 continue; 38 } 39 40 Dwarf_Off cuoff = 0; 41 Dwarf_Off old_cuoff = 0; 42 size_t hsize; 43 Dwarf_Off ao; 44 uint8_t asz; 45 uint8_t osz; 46 while (dwarf_nextcu (dbg, cuoff, &cuoff, &hsize, &ao, &asz, &osz) == 0) 47 { 48 printf ("cuhl = %zu, o = %llu, asz = %hhu, osz = %hhu, ncu = %llu\n", 49 hsize, (unsigned long long int) ao, 50 asz, osz, (unsigned long long int) cuoff); 51 52 /* Get the DIE for the CU. */ 53 Dwarf_Die die; 54 if (dwarf_offdie (dbg, old_cuoff + hsize, &die) == NULL) 55 { 56 /* Something went wrong. */ 57 printf ("%s: cannot get CU die\n", argv[cnt]); 58 result = 1; 59 break; 60 } 61 old_cuoff = cuoff; 62 63 Dwarf_Lines *lb; 64 size_t nlb; 65 if (dwarf_getsrclines (&die, &lb, &nlb) != 0) 66 { 67 printf ("%s: cannot get lines\n", argv[cnt]); 68 result = 1; 69 break; 70 } 71 72 printf (" %zu lines\n", nlb); 73 74 for (size_t i = 0; i < nlb; ++i) 75 { 76 Dwarf_Line *l = dwarf_onesrcline (lb, i); 77 if (l == NULL) 78 { 79 printf ("%s: cannot get individual line\n", argv[cnt]); 80 result = 1; 81 break; 82 } 83 84 Dwarf_Addr addr; 85 if (dwarf_lineaddr (l, &addr) != 0) 86 addr = 0; 87 const char *file = dwarf_linesrc (l, NULL, NULL); 88 int line; 89 if (dwarf_lineno (l, &line) != 0) 90 line = 0; 91 92 printf ("%" PRIx64 ": %s:%d:", (uint64_t) addr, 93 file ?: "???", line); 94 95 int column; 96 if (dwarf_linecol (l, &column) != 0) 97 column = 0; 98 if (column >= 0) 99 printf ("%d:", column); 100 101 bool is_stmt; 102 if (dwarf_linebeginstatement (l, &is_stmt) != 0) 103 is_stmt = false; 104 bool end_sequence; 105 if (dwarf_lineendsequence (l, &end_sequence) != 0) 106 end_sequence = false; 107 bool basic_block; 108 if (dwarf_lineblock (l, &basic_block) != 0) 109 basic_block = false; 110 bool prologue_end; 111 if (dwarf_lineprologueend (l, &prologue_end) != 0) 112 prologue_end = false; 113 bool epilogue_begin; 114 if (dwarf_lineepiloguebegin (l, &epilogue_begin) != 0) 115 epilogue_begin = false; 116 117 printf (" is_stmt:%s, end_seq:%s, bb:%s, prologue:%s, epilogue:%s\n", 118 is_stmt ? "yes" : "no", end_sequence ? "yes" : "no", 119 basic_block ? "yes" : "no", prologue_end ? "yes" : "no", 120 epilogue_begin ? "yes" : "no"); 121 } 122 } 123 124 dwarf_end (dbg); 125 close (fd); 126 } 127 128 return result; 129 } 130
