+2015-02-11 Petr Machata <pmachata@redhat.com>
+
+ * dwarf_ranges.c (dwarf_ranges): Do not bail out when neither
+ DW_AT_entry_pc nor DW_AT_low_pc are available. Instead remember
+ the fact in *BASEP and bail out later if it hasn't been updated by
+ __libdw_read_begin_end_pair_inc.
+
2014-12-24 Mark Wielaard <mjw@redhat.com>
* dwarf_getsrc_die.c (dwarf_getsrc_die): Return the last line record
DW_AT_entry_pc,
&attr_mem),
basep) != 0)
- {
- if (INTUSE(dwarf_errno) () == 0)
- {
- invalid:
- __libdw_seterrno (DWARF_E_INVALID_DWARF);
- }
- return -1;
- }
+ *basep = (Dwarf_Addr) -1;
}
else
{
return -1l;
}
- /* We have an address range entry. */
+ /* We have an address range entry. Check that we have a base. */
+ if (*basep == (Dwarf_Addr) -1)
+ {
+ if (INTUSE(dwarf_errno) () == 0)
+ {
+ invalid:
+ __libdw_seterrno (DWARF_E_INVALID_DWARF);
+ }
+ return -1;
+ }
+
*startp = *basep + begin;
*endp = *basep + end;
return readp - (unsigned char *) d->d_buf;
+2015-02-11 Petr Machata <pmachata@redhat.com>
+
+ * run-dwarf-ranges.sh: New test.
+ * dwarf-ranges.c: New file.
+ * debug-ranges-no-lowpc.s, debug-ranges-no-lowpc.o.bz2: New test case.
+
2015-01-21 Mark Wielaard <mjw@redhat.com>
* Makefile.am (check_PROGRAMS): Add elfstrtab.
find-prologues funcretval allregs rdwrmmap \
dwfl-bug-addr-overflow arls dwfl-bug-fd-leak \
dwfl-addr-sect dwfl-bug-report early-offscn \
- dwfl-bug-getmodules dwarf-getmacros addrcfi \
+ dwfl-bug-getmodules dwarf-getmacros dwarf-ranges addrcfi \
test-flag-nobits dwarf-getstring rerequest_tag \
alldts md5-sha1-test typeiter typeiter2 low_high_pc \
test-elf_cntl_gelf_getshdr dwflsyms dwfllines \
dwfl-bug-fd-leak dwfl-bug-report \
run-dwfl-bug-offline-rel.sh run-dwfl-addr-sect.sh \
run-disasm-x86.sh run-disasm-x86-64.sh \
- run-early-offscn.sh run-dwarf-getmacros.sh \
+ run-early-offscn.sh run-dwarf-getmacros.sh run-dwarf-ranges.sh \
run-test-flag-nobits.sh run-prelink-addr-test.sh \
run-dwarf-getstring.sh run-rerequest_tag.sh run-typeiter.sh \
run-readelf-d.sh run-readelf-gdb_index.sh run-unstrip-n.sh \
dwfl_bug_getmodules_LDADD = $(libdw) $(libebl) $(libelf) -ldl
dwfl_addr_sect_LDADD = $(libdw) $(libebl) $(libelf) -ldl
dwarf_getmacros_LDADD = $(libdw)
+dwarf_ranges_LDADD = $(libdw)
dwarf_getstring_LDADD = $(libdw)
addrcfi_LDADD = $(libdw) $(libebl) $(libelf) -ldl
test_flag_nobits_LDADD = $(libelf)
--- /dev/null
+ .section .debug_info
+.Lcu1_begin:
+ .4byte .Lcu1_end - .Lcu1_start
+.Lcu1_start:
+ .2byte 3 /* Version */
+ .4byte .Labbrev1_begin /* Abbrevs */
+ .byte 8 /* Pointer size */
+ .uleb128 2 /* Abbrev (DW_TAG_compile_unit) */
+ .4byte 0
+.Lcu1_end:
+ .section .note.gnu.build-id, "a", %note
+ .4byte 4
+ .4byte 8
+ .4byte 3
+ .ascii "GNU\0"
+ .byte 0x01
+ .byte 0x02
+ .byte 0x03
+ .byte 0x04
+ .byte 0x05
+ .byte 0x06
+ .byte 0x07
+ .byte 0x08
+ .section .debug_abbrev
+.Labbrev1_begin:
+ .uleb128 2 /* Abbrev start */
+ .uleb128 0x11 /* DW_TAG_compile_unit */
+ .byte 0 /* has_children */
+ .uleb128 0x55 /* DW_AT_ranges */
+ .uleb128 0x06 /* DW_FORM_data4 */
+ .byte 0x0 /* Terminator */
+ .byte 0x0 /* Terminator */
+ .byte 0x0 /* Terminator */
+ .byte 0x0 /* Terminator */
+
+ .section .debug_ranges
+
+ .8byte 0xffffffffffffffff
+ .8byte 0
+
+ .8byte 1
+ .8byte 2
+
+ .8byte 3
+ .8byte 4
+
+ .8byte 0
+ .8byte 0
+
--- /dev/null
+/* Test program for dwarf_ranges
+ Copyright (C) 2015 Red Hat, Inc.
+ This file is part of elfutils.
+
+ 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 <http://www.gnu.org/licenses/>. */
+
+#include <config.h>
+#include ELFUTILS_HEADER(dw)
+#include <dwarf.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <inttypes.h>
+
+int
+main (int argc, char *argv[])
+{
+ assert (argc >= 3);
+ const char *name = argv[1];
+ ptrdiff_t cuoff = strtol (argv[2], NULL, 0);
+
+ int fd = open (name, O_RDONLY);
+ Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);
+
+ Dwarf_Die cudie_mem, *cudie = dwarf_offdie (dbg, cuoff, &cudie_mem);
+
+ Dwarf_Addr base, start, end;
+ for (ptrdiff_t off = 0;
+ (off = dwarf_ranges (cudie, off, &base, &start, &end)); )
+ if (off == -1)
+ {
+ puts (dwarf_errmsg (dwarf_errno ()));
+ break;
+ }
+ else
+ fprintf (stderr, "%"PRIx64"..%"PRIx64" (base %"PRIx64")\n",
+ start, end, base);
+
+ dwarf_end (dbg);
+
+ return 0;
+}
--- /dev/null
+#! /bin/sh
+# Copyright (C) 2015 Red Hat, Inc.
+# This file is part of elfutils.
+#
+# 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 <http://www.gnu.org/licenses/>.
+
+. $srcdir/test-subr.sh
+
+testfiles debug-ranges-no-lowpc.o
+
+testrun_compare ${abs_builddir}/dwarf-ranges debug-ranges-no-lowpc.o 0xb <<\EOF
+1..2 (base 0)
+3..4 (base 0)
+EOF
+
+exit 0
projects / thirdparty / elfutils.git / commitdiff
