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https://sourceware.org/git/binutils-gdb.git
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4a94e36819
This commit brings all the changes made by running gdb/copyright.py as per GDB's Start of New Year Procedure. For the avoidance of doubt, all changes in this commits were performed by the script.
132 lines
3.2 KiB
Plaintext
132 lines
3.2 KiB
Plaintext
# Copyright 2017-2022 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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# Test the symbol needs check mechanism if it assumes that faking
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# reads from a target is a safe thing to do.
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#
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# In particular, the test uses a relative branch DWARF operation to
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# potentially cause an infinite loop, if the target reads are indeed
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# faked.
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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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# Choose suitable integer registers for the test.
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set dwarf_regnum 0
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if { [is_aarch64_target] } {
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set regname x0
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} elseif { [is_aarch32_target]
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|| [istarget "s390*-*-*" ]
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|| [istarget "powerpc*-*-*"]
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|| [istarget "rs6000*-*-aix*"] } {
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set regname r0
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} elseif { [is_x86_like_target] } {
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set regname eax
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} elseif { [is_amd64_regs_target] } {
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set regname rax
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} else {
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verbose "Skipping ${gdb_test_file_name}."
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return
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}
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standard_testfile symbol_needs_eval.c ${gdb_test_file_name}-dw.S
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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 $asm_file {
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global dwarf_regnum regname
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set exec_mask_var [gdb_target_symbol exec_mask]
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cu {} {
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DW_TAG_compile_unit {
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{DW_AT_name symbol_needs_eval.c}
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{DW_AT_comp_dir /tmp}
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} {
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declare_labels int_type_label
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# define int type
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int_type_label: DW_TAG_base_type {
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{DW_AT_name "int"}
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{DW_AT_encoding @DW_ATE_signed}
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{DW_AT_byte_size 4 DW_FORM_sdata}
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}
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# add info for variable exec_mask
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DW_TAG_variable {
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{DW_AT_name exec_mask}
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{DW_AT_type :$int_type_label}
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{DW_AT_location {
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DW_OP_addr $exec_mask_var
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} SPECIAL_expr}
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{external 1 flag}
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}
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# add info for subprogram main
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DW_TAG_subprogram {
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{MACRO_AT_func { main }}
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{DW_AT_frame_base {
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DW_OP_regx $dwarf_regnum
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} SPECIAL_expr}
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} {
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# define artificial variable a
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DW_TAG_variable {
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{DW_AT_name a}
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{DW_AT_type :$int_type_label}
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{DW_AT_location {
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DW_OP_lit1
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DW_OP_addr $exec_mask_var
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DW_OP_deref
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# jump to DW_OP_fbreg
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DW_OP_skip 4
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DW_OP_drop
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DW_OP_fbreg 0
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DW_OP_dup
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DW_OP_lit0
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DW_OP_eq
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# conditional jump to DW_OP_drop
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DW_OP_bra -9
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DW_OP_stack_value
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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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}
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if { [prepare_for_testing ${testfile}.exp ${testfile} \
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[list $srcfile $asm_file] {nodebug}] } {
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return -1
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}
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if ![runto_main] {
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return -1
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}
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gdb_test_no_output "set var \$$regname = 2" "init reg to 2"
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gdb_test_no_output "set var exec_mask = 0" "init exec_mask to 0"
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gdb_test "print/d a" " = 2" "a == 2"
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