/* Copyright (C) 1998-2002, 2004, 2006, 2012, 2015 Red Hat, Inc. This file is part of elfutils. Written by Ulrich Drepper , 1998. This file is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. elfutils is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #include #include #include #include #include ELFUTILS_HEADER(dw) #include #include #include #include #include "../libdw/known-dwarf.h" #include "../lib/system.h" static const char * dwarf_tag_string (unsigned int tag) { switch (tag) { #define DWARF_ONE_KNOWN_DW_TAG(NAME, CODE) case CODE: return #NAME; DWARF_ALL_KNOWN_DW_TAG #undef DWARF_ONE_KNOWN_DW_TAG default: return NULL; } } static const char * dwarf_attr_string (unsigned int attrnum) { switch (attrnum) { #define DWARF_ONE_KNOWN_DW_AT(NAME, CODE) case CODE: return #NAME; DWARF_ALL_KNOWN_DW_AT #undef DWARF_ONE_KNOWN_DW_AT default: return NULL; } } void handle (Dwarf *dbg, Dwarf_Die *die, int n) { Dwarf_Die child; unsigned int tag; const char *str; char buf[30]; const char *name; Dwarf_Off off; Dwarf_Off cuoff; size_t cnt; Dwarf_Addr addr; int i; tag = dwarf_tag (die); if (tag != DW_TAG_invalid) { str = dwarf_tag_string (tag); if (str == NULL) { snprintf (buf, sizeof buf, "%#x", tag); str = buf; } } else str = "* NO TAG *"; name = dwarf_diename (die); if (name == 0) name = "* NO NAME *"; off = dwarf_dieoffset (die); cuoff = dwarf_cuoffset (die); printf ("%*sDW_TAG_%s\n", n * 5, "", str); printf ("%*s Name : %s\n", n * 5, "", name); printf ("%*s Offset : %lld\n", n * 5, "", (long long int) off); printf ("%*s CU offset : %lld\n", n * 5, "", (long long int) cuoff); printf ("%*s Attrs :", n * 5, ""); for (cnt = 0; cnt < 0xffff; ++cnt) if (dwarf_hasattr (die, cnt)) printf (" %s", dwarf_attr_string (cnt) ?: ""); puts (""); if (dwarf_hasattr (die, DW_AT_low_pc) && dwarf_lowpc (die, &addr) == 0) { Dwarf_Attribute attr; Dwarf_Addr addr2; printf ("%*s low PC : %#llx\n", n * 5, "", (unsigned long long int) addr); if (dwarf_attr (die, DW_AT_low_pc, &attr) == NULL || dwarf_formaddr (&attr, &addr2) != 0 || addr != addr2) puts ("************* DW_AT_low_pc verify failed ************"); else if (! dwarf_hasform (&attr, DW_FORM_addr)) puts ("************* DW_AT_low_pc form failed ************"); else if (dwarf_whatform (&attr) != DW_FORM_addr) puts ("************* DW_AT_low_pc form (2) failed ************"); else if (dwarf_whatattr (&attr) != DW_AT_low_pc) puts ("************* DW_AT_low_pc attr failed ************"); } if (dwarf_hasattr (die, DW_AT_high_pc) && dwarf_highpc (die, &addr) == 0) { Dwarf_Attribute attr; Dwarf_Addr addr2; printf ("%*s high PC : %#llx\n", n * 5, "", (unsigned long long int) addr); if (dwarf_attr (die, DW_AT_high_pc, &attr) == NULL || dwarf_formaddr (&attr, &addr2) != 0 || addr != addr2) puts ("************* DW_AT_high_pc verify failed ************"); else if (! dwarf_hasform (&attr, DW_FORM_addr)) puts ("************* DW_AT_high_pc form failed ************"); else if (dwarf_whatform (&attr) != DW_FORM_addr) puts ("************* DW_AT_high_pc form (2) failed ************"); else if (dwarf_whatattr (&attr) != DW_AT_high_pc) puts ("************* DW_AT_high_pc attr failed ************"); } if (dwarf_hasattr (die, DW_AT_byte_size) && (i = dwarf_bytesize (die)) != -1) { Dwarf_Attribute attr; Dwarf_Word u2; unsigned int u; printf ("%*s byte size : %d\n", n * 5, "", i); if (dwarf_attr (die, DW_AT_byte_size, &attr) == NULL || dwarf_formudata (&attr, &u2) != 0 || i != (int) u2) puts ("************* DW_AT_byte_size verify failed ************"); else if (! dwarf_hasform (&attr, DW_FORM_data1) && ! dwarf_hasform (&attr, DW_FORM_data2) && ! dwarf_hasform (&attr, DW_FORM_data4) && ! dwarf_hasform (&attr, DW_FORM_data8) && ! dwarf_hasform (&attr, DW_FORM_sdata) && ! dwarf_hasform (&attr, DW_FORM_udata)) puts ("************* DW_AT_byte_size form failed ************"); else if ((u = dwarf_whatform (&attr)) == 0 || (u != DW_FORM_data1 && u != DW_FORM_data2 && u != DW_FORM_data4 && u != DW_FORM_data8 && u != DW_FORM_sdata && u != DW_FORM_udata)) puts ("************* DW_AT_byte_size form (2) failed ************"); else if (dwarf_whatattr (&attr) != DW_AT_byte_size) puts ("************* DW_AT_byte_size attr failed ************"); } if (dwarf_hasattr (die, DW_AT_bit_size) && (i = dwarf_bitsize (die)) != -1) { Dwarf_Attribute attr; Dwarf_Word u2; unsigned int u; printf ("%*s bit size : %d\n", n * 5, "", i); if (dwarf_attr (die, DW_AT_bit_size, &attr) == NULL || dwarf_formudata (&attr, &u2) != 0 || i != (int) u2) puts ("************* DW_AT_bit_size test failed ************"); else if (! dwarf_hasform (&attr, DW_FORM_data1) && ! dwarf_hasform (&attr, DW_FORM_data2) && ! dwarf_hasform (&attr, DW_FORM_data4) && ! dwarf_hasform (&attr, DW_FORM_data8) && ! dwarf_hasform (&attr, DW_FORM_sdata) && ! dwarf_hasform (&attr, DW_FORM_udata)) puts ("************* DW_AT_bit_size form failed ************"); else if ((u = dwarf_whatform (&attr)) == 0 || (u != DW_FORM_data1 && u != DW_FORM_data2 && u != DW_FORM_data4 && u != DW_FORM_data8 && u != DW_FORM_sdata && u != DW_FORM_udata)) puts ("************* DW_AT_bit_size form (2) failed ************"); else if (dwarf_whatattr (&attr) != DW_AT_bit_size) puts ("************* DW_AT_bit_size attr failed ************"); } if (dwarf_hasattr (die, DW_AT_bit_offset) && (i = dwarf_bitoffset (die)) != -1) { Dwarf_Attribute attr; Dwarf_Word u2; unsigned int u; printf ("%*s bit offset: %d\n", n * 5, "", i); if (dwarf_attr (die, DW_AT_bit_offset, &attr) == NULL || dwarf_formudata (&attr, &u2) != 0 || i != (int) u2) puts ("************* DW_AT_bit_offset test failed ************"); else if (! dwarf_hasform (&attr, DW_FORM_data1) && ! dwarf_hasform (&attr, DW_FORM_data2) && ! dwarf_hasform (&attr, DW_FORM_data4) && ! dwarf_hasform (&attr, DW_FORM_data8) && ! dwarf_hasform (&attr, DW_FORM_sdata) && ! dwarf_hasform (&attr, DW_FORM_udata)) puts ("************* DW_AT_bit_offset form failed ************"); else if ((u = dwarf_whatform (&attr)) == 0 || (u != DW_FORM_data1 && u != DW_FORM_data2 && u != DW_FORM_data4 && u != DW_FORM_data8 && u != DW_FORM_sdata && u != DW_FORM_udata)) puts ("************* DW_AT_bit_offset form (2) failed ************"); else if (dwarf_whatattr (&attr) != DW_AT_bit_offset) puts ("************* DW_AT_bit_offset attr failed ************"); } if (dwarf_hasattr (die, DW_AT_language) && (i = dwarf_srclang (die)) != -1) { Dwarf_Attribute attr; Dwarf_Word u2; unsigned int u; printf ("%*s language : %d\n", n * 5, "", i); if (dwarf_attr (die, DW_AT_language, &attr) == NULL || dwarf_formudata (&attr, &u2) != 0 || i != (int) u2) puts ("************* DW_AT_language test failed ************"); else if (! dwarf_hasform (&attr, DW_FORM_data1) && ! dwarf_hasform (&attr, DW_FORM_data2) && ! dwarf_hasform (&attr, DW_FORM_data4) && ! dwarf_hasform (&attr, DW_FORM_data8) && ! dwarf_hasform (&attr, DW_FORM_sdata) && ! dwarf_hasform (&attr, DW_FORM_udata)) puts ("************* DW_AT_language form failed ************"); else if ((u = dwarf_whatform (&attr)) == 0 || (u != DW_FORM_data1 && u != DW_FORM_data2 && u != DW_FORM_data4 && u != DW_FORM_data8 && u != DW_FORM_sdata && u != DW_FORM_udata)) puts ("************* DW_AT_language form (2) failed ************"); else if (dwarf_whatattr (&attr) != DW_AT_language) puts ("************* DW_AT_language attr failed ************"); } if (dwarf_hasattr (die, DW_AT_ordering) && (i = dwarf_arrayorder (die)) != -1) { Dwarf_Attribute attr; Dwarf_Word u2; unsigned int u; printf ("%*s ordering : %d\n", n * 5, "", i); if (dwarf_attr (die, DW_AT_ordering, &attr) == NULL || dwarf_formudata (&attr, &u2) != 0 || i != (int) u2) puts ("************* DW_AT_ordering test failed ************"); else if (! dwarf_hasform (&attr, DW_FORM_data1) && ! dwarf_hasform (&attr, DW_FORM_data2) && ! dwarf_hasform (&attr, DW_FORM_data4) && ! dwarf_hasform (&attr, DW_FORM_data8) && ! dwarf_hasform (&attr, DW_FORM_sdata) && ! dwarf_hasform (&attr, DW_FORM_udata)) puts ("************* DW_AT_ordering failed ************"); else if ((u = dwarf_whatform (&attr)) == 0 || (u != DW_FORM_data1 && u != DW_FORM_data2 && u != DW_FORM_data4 && u != DW_FORM_data8 && u != DW_FORM_sdata && u != DW_FORM_udata)) puts ("************* DW_AT_ordering form (2) failed ************"); else if (dwarf_whatattr (&attr) != DW_AT_ordering) puts ("************* DW_AT_ordering attr failed ************"); } if (dwarf_hasattr (die, DW_AT_comp_dir)) { Dwarf_Attribute attr; if (dwarf_attr (die, DW_AT_comp_dir, &attr) == NULL || (name = dwarf_formstring (&attr)) == NULL) puts ("************* DW_AT_comp_dir attr failed ************"); else printf ("%*s directory : %s\n", n * 5, "", name); } if (dwarf_hasattr (die, DW_AT_producer)) { Dwarf_Attribute attr; if (dwarf_attr (die, DW_AT_producer, &attr) == NULL || (name = dwarf_formstring (&attr)) == NULL) puts ("************* DW_AT_comp_dir attr failed ************"); else printf ("%*s producer : %s\n", n * 5, "", name); } if (dwarf_haschildren (die) != 0 && dwarf_child (die, &child) == 0) handle (dbg, &child, n + 1); if (dwarf_siblingof (die, die) == 0) handle (dbg, die, n); } int main (int argc, char *argv[]) { int cnt; for (cnt = 1; cnt < argc; ++cnt) { int fd = open (argv[cnt], O_RDONLY); Dwarf *dbg; printf ("file: %s\n", xbasename (argv[cnt])); dbg = dwarf_begin (fd, DWARF_C_READ); if (dbg == NULL) { printf ("%s not usable\n", argv[cnt]); close (fd); continue; } Dwarf_Off off = 0; Dwarf_Off old_off = 0; size_t hsize; Dwarf_Off abbrev; uint8_t addresssize; uint8_t offsetsize; while (dwarf_nextcu (dbg, off, &off, &hsize, &abbrev, &addresssize, &offsetsize) == 0) { printf ("New CU: off = %llu, hsize = %zu, ab = %llu, as = %" PRIu8 ", os = %" PRIu8 "\n", (unsigned long long int) old_off, hsize, (unsigned long long int) abbrev, addresssize, offsetsize); Dwarf_Die die; if (dwarf_offdie (dbg, old_off + hsize, &die) != NULL) handle (dbg, &die, 1); old_off = off; } dwarf_end (dbg); close (fd); } return 0; }