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133 lines
3.4 KiB
133 lines
3.4 KiB
/* Test program for dwarf_lowpc and dwarf_highpc
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Copyright (C) 2012, 2018 Red Hat, Inc.
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This file is part of elfutils.
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This file is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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elfutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <config.h>
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#include <assert.h>
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#include <inttypes.h>
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#include ELFUTILS_HEADER(dwfl)
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#include <dwarf.h>
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#include <argp.h>
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#include <stdio.h>
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#include <stdio_ext.h>
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#include <locale.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fnmatch.h>
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struct args
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{
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Dwfl *dwfl;
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Dwarf_Die *cu;
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Dwarf_Addr dwbias;
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char **argv;
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const char *file;
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};
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static struct args *args;
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static void
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fail(Dwarf_Off off, const char *name, const char *msg)
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{
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printf("%s: [%" PRIx64 "] '%s' %s\n", args->file, off, name, msg);
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exit(-1);
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}
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static int
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handle_die (Dwarf_Die *die, void *arg)
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{
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args = arg;
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Dwarf_Off off = dwarf_dieoffset (die);
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const char *name = dwarf_diename (die);
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if (name == NULL)
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name = "<no name>";
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printf ("[%" PRIx64 "] %s\n", off, name);
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Dwarf_Addr lowpc = 0;
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Dwarf_Addr highpc = 0;
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if (dwarf_lowpc (die, &lowpc) != 0 && dwarf_hasattr (die, DW_AT_low_pc))
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fail (off, name, "has DW_AT_low_pc but dwarf_lowpc fails");
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if (dwarf_highpc (die, &highpc) != 0 && dwarf_hasattr (die, DW_AT_high_pc))
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fail (off, name, "has DW_AT_high_pc but dwarf_highpc fails");
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/* GCC < 4.7 had a bug where no code CUs got a highpc == lowpc.
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Allow that, because it is not the main purpose of this test. */
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if (dwarf_hasattr (die, DW_AT_low_pc)
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&& dwarf_hasattr (die, DW_AT_high_pc)
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&& highpc <= lowpc
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&& ! (dwarf_tag (die) == DW_TAG_compile_unit && highpc == lowpc))
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{
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printf("lowpc: %" PRIx64 ", highpc: %" PRIx64 "lx\n", lowpc, highpc);
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fail (off, name, "highpc <= lowpc");
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}
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return 0;
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}
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int
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main (int argc, char *argv[])
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{
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int remaining;
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/* Set locale. */
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(void) setlocale (LC_ALL, "");
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struct args a = { .dwfl = NULL, .cu = NULL };
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(void) argp_parse (dwfl_standard_argp (), argc, argv, 0, &remaining,
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&a.dwfl);
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assert (a.dwfl != NULL);
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a.argv = &argv[remaining];
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int result = 0;
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while ((a.cu = dwfl_nextcu (a.dwfl, a.cu, &a.dwbias)) != NULL)
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{
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a.file = dwarf_diename (a.cu);
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handle_die (a.cu, &a);
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dwarf_getfuncs (a.cu, &handle_die, &a, 0);
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uint8_t unit_type;
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Dwarf_Die subdie;
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if (dwarf_cu_info (a.cu->cu, NULL, &unit_type, NULL, &subdie,
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NULL, NULL, NULL) != 0)
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{
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Dwarf_Off off = dwarf_dieoffset (a.cu);
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fail (off, "dwarf_cu_info", dwarf_errmsg (-1));
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}
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if (unit_type == DW_UT_skeleton)
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{
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const char *name = dwarf_diename (&subdie) ?: "<unknown>";
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printf ("Following split subdie: %s\n", name);
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struct args b = a;
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b.cu = &subdie;
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handle_die (b.cu, &b);
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dwarf_getfuncs (b.cu, &handle_die, &b, 0);
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printf ("Done subdie: %s\n", name);
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}
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}
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dwfl_end (a.dwfl);
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printf ("\n");
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return result;
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}
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