From f2e6e1d3bfd4c92ef0f5ed4721fd9050c59dafca Mon Sep 17 00:00:00 2001 From: Alexander Kanavin Date: Fri, 10 Nov 2017 17:38:59 +0200 Subject: package.bbclass: replace rpm/debugedit with dwarfsrcfiles Debugedit provided by rpm 4.14 is rewriting binaries in-place, and was found to produce broken output at least for grub: http://lists.openembedded.org/pipermail/openembedded-core/2017-November/143989.html A replacement utility was suggested via private mail: https://lists.fedorahosted.org/archives/list/elfutils-devel@lists.fedorahosted.org/message/VZP4G5N2ELYZEDAB3QYLXYHDGX4WMCUF/ Signed-off-by: Alexander Kanavin --- .../dwarfsrcfiles/dwarfsrcfiles.bb | 22 ++++ .../dwarfsrcfiles/files/dwarfsrcfiles.c | 111 +++++++++++++++++++++ 2 files changed, 133 insertions(+) create mode 100644 meta/recipes-devtools/dwarfsrcfiles/dwarfsrcfiles.bb create mode 100644 meta/recipes-devtools/dwarfsrcfiles/files/dwarfsrcfiles.c (limited to 'meta/recipes-devtools/dwarfsrcfiles') diff --git a/meta/recipes-devtools/dwarfsrcfiles/dwarfsrcfiles.bb b/meta/recipes-devtools/dwarfsrcfiles/dwarfsrcfiles.bb new file mode 100644 index 0000000000..c59a006eda --- /dev/null +++ b/meta/recipes-devtools/dwarfsrcfiles/dwarfsrcfiles.bb @@ -0,0 +1,22 @@ +SUMMARY = "A small utility for printing debig source file locations embedded in binaries" +LICENSE = "GPLv2+" +LIC_FILES_CHKSUM = "file://../dwarfsrcfiles.c;md5=31483894e453a77acbb67847565f1b5c;beginline=1;endline=8" + +SRC_URI = "file://dwarfsrcfiles.c" +BBCLASSEXTEND = "native" +DEPENDS = "elfutils" +DEPENDS_append_libc-musl = " argp-standalone" + +do_compile () { + ${CC} ${CFLAGS} ${LDFLAGS} -o dwarfsrcfiles ../dwarfsrcfiles.c -lelf -ldw +} + +do_compile_libc-musl () { + ${CC} ${CFLAGS} ${LDFLAGS} -o dwarfsrcfiles ../dwarfsrcfiles.c -lelf -ldw -largp +} + +do_install () { + install -d ${D}${bindir} + install -t ${D}${bindir} dwarfsrcfiles +} + diff --git a/meta/recipes-devtools/dwarfsrcfiles/files/dwarfsrcfiles.c b/meta/recipes-devtools/dwarfsrcfiles/files/dwarfsrcfiles.c new file mode 100644 index 0000000000..af7af524eb --- /dev/null +++ b/meta/recipes-devtools/dwarfsrcfiles/files/dwarfsrcfiles.c @@ -0,0 +1,111 @@ +// dwarfsrcfiles.c - Get source files associated with the dwarf in a elf file. +// gcc -Wall -g -O2 -lelf -ldw -o dwarfsrcfiles dwarfsrcfiles.c +// +// Copyright (C) 2011, Mark Wielaard +// +// This file is free software. You can redistribute it and/or modify +// it under the terms of the GNU General Public License (GPL); either +// version 2, or (at your option) any later version. + +#include +#include + +#include +#include +#include + +static int +process_cu (Dwarf_Die *cu_die) +{ + Dwarf_Attribute attr; + const char *name; + const char *dir = NULL; + + Dwarf_Files *files; + size_t n; + int i; + + if (dwarf_tag (cu_die) != DW_TAG_compile_unit) + { + fprintf (stderr, "DIE isn't a compile unit"); + return -1; + } + + if (dwarf_attr (cu_die, DW_AT_name, &attr) == NULL) + { + fprintf(stderr, "CU doesn't have a DW_AT_name"); + return -1; + } + + name = dwarf_formstring (&attr); + if (name == NULL) + { + fprintf(stderr, "Couldn't get DW_AT_name as string, %s", + dwarf_errmsg (-1)); + return -1; + } + + if (dwarf_attr (cu_die, DW_AT_comp_dir, &attr) != NULL) + { + dir = dwarf_formstring (&attr); + if (dir == NULL) + { + fprintf(stderr, "Couldn't get DW_AT_comp_die as string, %s", + dwarf_errmsg (-1)); + return -1; + } + } + + if (dir == NULL) + printf ("%s\n", name); + else + printf ("%s/%s\n", dir, name); + + if (dwarf_getsrcfiles (cu_die, &files, &n) != 0) + { + fprintf(stderr, "Couldn't get CU file table, %s", + dwarf_errmsg (-1)); + return -1; + } + + for (i = 1; i < n; i++) + { + const char *file = dwarf_filesrc (files, i, NULL, NULL); + if (dir != NULL && file[0] != '/') + printf ("\t%s/%s\n", dir, file); + else + printf ("\t%s\n", file); + } + + return 0; +} + +int +main (int argc, char **argv) +{ + char* args[3]; + int res = 0; + Dwfl *dwfl; + Dwarf_Addr bias; + + if (argc != 2) + fprintf(stderr, "Usage %s ", argv[0]); + + // Pretend "dwarfsrcfiles -e " was given, so we can use standard + // dwfl argp parser to open the file for us and get our Dwfl. Useful + // in case argument is an ET_REL file (like kernel modules). libdwfl + // will fix up relocations for us. + args[0] = argv[0]; + args[1] = "-e"; + args[2] = argv[1]; + + argp_parse (dwfl_standard_argp (), 3, args, 0, NULL, &dwfl); + + Dwarf_Die *cu = NULL; + while ((cu = dwfl_nextcu (dwfl, cu, &bias)) != NULL) + res |= process_cu (cu); + + dwfl_end (dwfl); + + return res; +} -- cgit 1.2.3-korg