e87324746c
Marin Cermak has found various testcases (or one of them) of GDB FAIL on ppc64. https://sourceware.org/bugzilla/show_bug.cgi?id=20328 .o contained only the function descriptor address. The DWARF as produced by Tcl Dwarf::assemble: <1><27>: Abbrev Number: 4 (DW_TAG_subprogram) <28> DW_AT_name : main <2d> DW_AT_external : 1 <2e> DW_AT_low_pc : 0x1001ff98 <36> DW_AT_high_pc : 0x1002ff98 <2><3e>: Abbrev Number: 5 (DW_TAG_lexical_block) Runtime info: $2 = {<text variable, no debug info>} 0x10000674 <.main> $3 = {void ()} 0x1001ff98 <main> On Tue, 12 Jul 2016 15:22:49 +0200, Ulrich Weigand wrote: Well, most of the gdb.dwarf2 test cases simply use explicitly placed labels for the DW_AT_low_pc / DW_AT_high_pc attributes. See e.g. dw2-unresolved-main.c: asm (".globl cu_text_start"); asm ("cu_text_start:"); On Wed, 13 Jul 2016 10:54:00 +0200, Jan Kratochvil wrote: Now I see I should not do that because: lib/dwarf.exp: proc function_range { func src } { So I am providing this patch. gdb/testsuite/ChangeLog 2016-07-13 Jan Kratochvil <jan.kratochvil@redhat.com> * gdb.dwarf2/atomic-type.exp: Use function_range for low_pc and high_pc. * gdb.dwarf2/atomic.c (f): Rename f_end_lbl to f_label. * gdb.dwarf2/dw2-bad-mips-linkage-name.c (f): Rename f_end_lbl to f_label. (g): Rename g_end_lbl to g_label. * gdb.dwarf2/dw2-bad-mips-linkage-name.exp: Use function_range for low_pc and high_pc. * gdb.dwarf2/dw2-lexical-block-bare.exp: Likewise.
82 lines
2.5 KiB
Text
82 lines
2.5 KiB
Text
# Copyright 2015-2016 Free Software Foundation, Inc.
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# This program 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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#
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# This program is distributed in the hope that it will be useful,
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# but 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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#
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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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load_lib dwarf.exp
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# This test can only be run on targets which support DWARF-2 and use gas.
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if {![dwarf2_support]} {
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return 0
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}
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standard_testfile dw2-bad-mips-linkage-name.c dw2-bad-mips-linkage-name.S
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# Set up the DWARF for the test.
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set asm_file [standard_output_file $srcfile2]
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Dwarf::assemble $asm_file {
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global srcdir subdir srcfile
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set f_result [function_range f ${srcdir}/${subdir}/${srcfile}]
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set f_start [lindex $f_result 0]
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set f_length [lindex $f_result 1]
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set g_result [function_range g ${srcdir}/${subdir}/${srcfile}]
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set g_start [lindex $g_result 0]
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set g_length [lindex $g_result 1]
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cu {} {
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DW_TAG_compile_unit {
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{DW_AT_language @DW_LANG_C}
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{DW_AT_name dw2-bad-mips-linkage-name.c}
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{DW_AT_comp_dir /tmp}
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} {
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declare_labels b_l
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b_l: DW_TAG_base_type {
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{DW_AT_byte_size 1 DW_FORM_sdata}
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{DW_AT_encoding @DW_ATE_signed}
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{DW_AT_name bool}
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}
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DW_TAG_subprogram {
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{name f}
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{low_pc $f_start addr}
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{high_pc "$f_start + $f_length" addr}
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{type :$b_l}
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{DW_AT_MIPS_linkage_name _Z1fv}
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}
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DW_TAG_subprogram {
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{name g}
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{low_pc $g_start addr}
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{high_pc "$g_start + $g_length" addr}
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{type :$b_l}
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{DW_AT_MIPS_linkage_name 42 DW_FORM_data1}
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}
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}
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}
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}
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if { [prepare_for_testing ${testfile}.exp ${testfile} \
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[list $srcfile $asm_file] {nodebug}] } {
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return -1
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}
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# A successful run will have two PASSes. A GDB that's lacking
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# attribute type checking will segfault at some point. It doesn't
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# much matter what we test here, so long as we do something to make
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# sure that the DWARF is read.
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gdb_test "ptype f" " = bool \\(\\)"
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gdb_test "ptype g" " = bool \\(\\)"
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