DW_AT_data_location and DW_OP_push_object_address testcase.
This testcase allows us to test the proper processing of both
DW_AT_data_location and DW_OP_push_object_address using a hand-crafted
testcase duplicating how we expect the Ada compiler to represent
unbounded arrays.
gdb/testsuite/ChangeLog:
* gdb.dwarf2/data-loc.c, gdb.dwarf2/data-loc.exp: New files.
This commit is contained in:
Joel Brobecker
parent
950c97d860
commit
3c8c5dcc98
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@ -1,3 +1,7 @@
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2014-08-18 Joel Brobecker <brobecker@adacore.com>
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* gdb.dwarf2/data-loc.c, gdb.dwarf2/data-loc.exp: New files.
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2014-08-15 Siva Chandra Reddy <sivachandra@google.com>
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PR c++/17132
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@ -0,0 +1,46 @@
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/* Copyright 2014 Free Software Foundation, Inc.
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This file is part of GDB.
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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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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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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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/* This C file provides some global variables laid out in a way
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that mimicks what the GNAT Ada compiler calls "fat pointers".
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These fat pointers are the memory representation used by
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the compiler to handle dynamic arrays.
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Debugging information on how to decode that data into an array
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will be generated separately by the testcase using that file. */
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struct fat_pointer
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{
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int *data;
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int *bounds;
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};
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int table_1_data[] = {1, 2, 3};
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int table_1_bounds[] = {1, 3};
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struct fat_pointer table_1 = {table_1_data, table_1_bounds};
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int table_2_data[] = {5, 8, 13, 21, 34};
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int table_2_bounds[] = {2, 6};
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struct fat_pointer table_2 = {table_2_data, table_2_bounds};
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int
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main (void)
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{
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table_1.bounds[1] = 2;
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table_2.bounds[1] = 3;
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return 0;
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}
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@ -0,0 +1,191 @@
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# Copyright 2014 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 data-loc.c data-loc-dw.S
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# We need to know the size of integer and address types in order
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# to write some of the debugging info we'd like to generate.
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#
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# For that, we ask GDB by debugging our data-loc.c program.
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# Any program would do, but since we already have data-loc.c
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# specifically for this testcase, might as well use that.
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if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile}] } {
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untested ${testfile}.exp
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return -1
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}
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# Make some DWARF for the test.
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set asm_file [standard_output_file $srcfile2]
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Dwarf::assemble $asm_file {
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cu {} {
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DW_TAG_compile_unit {
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{DW_AT_language @DW_LANG_Ada95}
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{DW_AT_name foo.adb}
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{DW_AT_comp_dir /tmp}
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} {
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declare_labels integer_label array_label
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integer_label: DW_TAG_base_type {
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{DW_AT_byte_size 4 DW_FORM_sdata}
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{DW_AT_encoding @DW_ATE_signed}
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{DW_AT_name integer}
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}
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array_label: DW_TAG_array_type {
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{DW_AT_name foo__array_type}
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{DW_AT_type :$integer_label}
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{DW_AT_data_location {
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DW_OP_push_object_address
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DW_OP_deref
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} SPECIAL_expr}
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{external 1 flag}
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} {
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DW_TAG_subrange_type {
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{DW_AT_type :$integer_label}
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{DW_AT_lower_bound {
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DW_OP_push_object_address
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DW_OP_plus_uconst [get_sizeof "void *" 96]
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DW_OP_deref
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DW_OP_deref_size [get_sizeof "int" 4]
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} SPECIAL_expr}
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{DW_AT_upper_bound {
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DW_OP_push_object_address
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DW_OP_plus_uconst [get_sizeof "void *" 96]
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DW_OP_deref
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DW_OP_plus_uconst [get_sizeof "int" 4]
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DW_OP_deref_size [get_sizeof "int" 4]
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} SPECIAL_expr}
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{DW_AT_upper_bound 5 DW_FORM_data1}
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}
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}
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DW_TAG_typedef {
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{DW_AT_name foo__array_type}
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{DW_AT_type :$array_label}
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}
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DW_TAG_variable {
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{DW_AT_name foo__three}
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{DW_AT_type :$array_label}
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{DW_AT_location {
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DW_OP_addr table_1
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} SPECIAL_expr}
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{external 1 flag}
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}
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DW_TAG_variable {
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{DW_AT_name foo__five}
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{DW_AT_type :$array_label}
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{DW_AT_location {
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DW_OP_addr table_2
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} SPECIAL_expr}
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{external 1 flag}
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}
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}
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}
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}
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# Now that we've generated the DWARF debugging info, rebuild our
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# program using our debug info instead of the info generated by
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# the compiler.
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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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if ![runto_main] {
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return -1
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}
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gdb_test_no_output "set language ada"
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gdb_test "print foo.three" \
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" = \\(1, 2, 3\\)"
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gdb_test "ptype foo.three" \
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"type = array \\(1 .. 3\\) of integer"
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gdb_test "print foo.three(1)" \
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" = 1"
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gdb_test "print foo.three(2)" \
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" = 2"
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gdb_test "print foo.three(3)" \
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" = 3"
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gdb_test "print foo.three'first" \
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" = 1"
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gdb_test "print foo.three'last" \
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" = 3"
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gdb_test "print foo.three'length" \
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" = 3"
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gdb_test "print foo.five" \
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" = \\(2 => 5, 8, 13, 21, 34\\)"
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gdb_test "ptype foo.five" \
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"type = array \\(2 .. 6\\) of integer"
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gdb_test "ptype foo.array_type" \
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"type = array \\(<>\\) of integer"
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gdb_test "print foo.five(2)" \
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" = 5"
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gdb_test "print foo.five(3)" \
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" = 8"
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gdb_test "print foo.five(4)" \
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" = 13"
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gdb_test "print foo.five(5)" \
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" = 21"
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gdb_test "print foo.five(6)" \
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" = 34"
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gdb_test "print foo.five'first" \
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" = 2"
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gdb_test "print foo.five'last" \
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" = 6"
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gdb_test "print foo.five'length" \
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" = 5"
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gdb_test_no_output "set lang c"
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gdb_test "print foo__three" \
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" = \\{1, 2, 3\\}"
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gdb_test "ptype foo__three" \
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"type = integer \\\[3\\\]"
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gdb_test "print foo__five" \
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" = \\{5, 8, 13, 21, 34\\}"
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gdb_test "ptype foo__five" \
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"type = integer \\\[5\\\]"
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gdb_test "ptype foo__array_type" \
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"type = integer \\\[variable length\\\]"
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