mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
131 lines
3.6 KiB
Plaintext
131 lines
3.6 KiB
Plaintext
# Copyright 2018-2023 Free Software Foundation, Inc.
|
|
|
|
# This program 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.
|
|
#
|
|
# This program 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/>.
|
|
|
|
# Test that GDB can support accesing fields of a structure if the
|
|
# fields have non-standard names. Specifically, if the names are
|
|
# reserved C type names like 'double', 'float', 'int', etc.
|
|
#
|
|
# We don't expect to that such structures should be seen in real C
|
|
# code, but in some cases GDB will generate artificial structures, and
|
|
# in some cases, these type names are the obvious choice for field
|
|
# names.
|
|
#
|
|
# One specific example is RISC-V, the 64-bit floating point registers
|
|
# are represented as a structure with the field names 'float' and
|
|
# 'double'.
|
|
|
|
load_lib dwarf.exp
|
|
|
|
# This test can only be run on targets which support DWARF-2 and use
|
|
# gas.
|
|
require dwarf2_support
|
|
|
|
standard_testfile .c .S
|
|
set asm_file [standard_output_file $srcfile2]
|
|
|
|
# We need to know the size of integer and address types in order to
|
|
# write some of the debugging info we'd like to generate.
|
|
#
|
|
# For that, we ask GDB by debugging our test program. Any program
|
|
# would do, but since we already have one specifically for this
|
|
# testcase, might as well use that.
|
|
if [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] {
|
|
return -1
|
|
}
|
|
set int_size [get_sizeof "int" -1]
|
|
|
|
# Rebuild the test binary with the single field within the structure
|
|
# renamed to FIELD_NAME, then test that we can access the field
|
|
# through '.' and through '->'.
|
|
proc run_test { field_name } {
|
|
global asm_file testfile srcfile subdir srcdir
|
|
global int_size
|
|
|
|
Dwarf::assemble $asm_file {
|
|
global srcdir subdir srcfile
|
|
global field_name int_size
|
|
|
|
cu {} {
|
|
DW_TAG_compile_unit {
|
|
{DW_AT_language @DW_LANG_C}
|
|
{DW_AT_name $srcfile}
|
|
{DW_AT_comp_dir /tmp}
|
|
} {
|
|
declare_labels itype ptype stype
|
|
|
|
itype: DW_TAG_base_type {
|
|
{DW_AT_byte_size $int_size DW_FORM_sdata}
|
|
{DW_AT_encoding @DW_ATE_signed}
|
|
{DW_AT_name int}
|
|
}
|
|
|
|
stype: DW_TAG_structure_type {
|
|
{DW_AT_name "foo"}
|
|
{DW_AT_byte_size $int_size DW_FORM_sdata}
|
|
} {
|
|
member {
|
|
{name $field_name}
|
|
{type :$itype}
|
|
{data_member_location 0 data1}
|
|
}
|
|
}
|
|
|
|
ptype: DW_TAG_pointer_type {
|
|
{DW_AT_type :$stype}
|
|
}
|
|
|
|
DW_TAG_variable {
|
|
{DW_AT_name obj}
|
|
{DW_AT_type :$stype}
|
|
{DW_AT_location {
|
|
DW_OP_addr [gdb_target_symbol obj]
|
|
} SPECIAL_expr}
|
|
{external 1 flag}
|
|
}
|
|
|
|
DW_TAG_variable {
|
|
{DW_AT_name ptr}
|
|
{DW_AT_type :$ptype}
|
|
{DW_AT_location {
|
|
DW_OP_addr [gdb_target_symbol ptr]
|
|
} SPECIAL_expr}
|
|
{external 1 flag}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if { [prepare_for_testing "failed to prepare" ${testfile} \
|
|
[list $srcfile $asm_file] {nodebug}] } {
|
|
return -1
|
|
}
|
|
|
|
if ![runto_main] {
|
|
return -1
|
|
}
|
|
|
|
gdb_test "p obj.$field_name" " = 0" \
|
|
"access a field named '$field_name' directly"
|
|
|
|
gdb_test "p ptr->$field_name" " = 0" \
|
|
"access a field named '$field_name' through a pointer"
|
|
|
|
gdb_exit
|
|
}
|
|
|
|
foreach field_name { double float char byte long int short unsigned signed } {
|
|
run_test $field_name
|
|
}
|