gdb/testsuite/gdb.cp/call-method-register.exp

# Copyright 1992-2024 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 callling a method on a variable that has been put in a
# register.

require allow_cplus_tests

load_lib "cp-support.exp"
load_lib dwarf.exp

standard_testfile .cc -dw.S

if {[prepare_for_testing "failed to prepare" $testfile $srcfile \
	 {debug c++}]} {
    return -1
}

set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {

    set main_result \
	[function_range main ${::srcdir}/${::subdir}/${::srcfile}]
    set main_start [lindex $main_result 0]
    set main_length [lindex $main_result 1]

    cu {} {
	compile_unit {
	    {DW_AT_language @DW_LANG_C_plus_plus}
	    {DW_AT_name	    $::srcfile}
	    {DW_AT_comp_dir /tmp}
	} {
	    declare_labels int_type_label struct_type_label \
		struct_ptr_type_label
	    set ptr_size [get_sizeof "void *" 96]

	    DW_TAG_subprogram {
		{name main}
		{low_pc $main_start addr}
		{high_pc $main_length data8}
		{DW_AT_type :$int_type_label}
	    }

	    int_type_label: DW_TAG_base_type {
		{DW_AT_byte_size 4 DW_FORM_sdata}
		{DW_AT_encoding @DW_ATE_signed}
		{DW_AT_name int}
	    }

	    struct_type_label: DW_TAG_structure_type {
		{DW_AT_byte_size 4 DW_FORM_sdata}
		{DW_AT_name small}
	    } {
		member {
		    {name xxx}
		    {type :$int_type_label}
		    {data_member_location 0 data1}
		}
		subprogram {
		    {name yyy}
		    {type :$int_type_label}
		} {
		    formal_parameter {
			{type :$struct_ptr_type_label}
			{artificial 1 flag_present}
		    }
		}
	    }

	    struct_ptr_type_label: DW_TAG_pointer_type {
		{DW_AT_byte_size $ptr_size DW_FORM_data1}
		{type :$struct_type_label}
	    }

	    DW_TAG_variable {
		{DW_AT_name global_var}
		{DW_AT_type :$struct_type_label}
		{DW_AT_location {
		    DW_OP_reg0
		} 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 "print global_var.yyy ()" \
    "Address requested for identifier \"global_var\" which is in register .*" \
    "call method on register local"