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3666a04883
This commits the result of running gdb/copyright.py as per our Start
of New Year procedure...
gdb/ChangeLog
Update copyright year range in copyright header of all GDB files.
247 lines
6.8 KiB
Plaintext
247 lines
6.8 KiB
Plaintext
# Copyright 2013-2021 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 .c entry-values-dw.S
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if {[gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile}1.o \
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object {nodebug}] != ""} {
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return -1
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}
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if {[gdb_compile [list ${binfile}1.o] \
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"${binfile}1" executable {}] != ""} {
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return -1
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}
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# Start GDB and load executable file, compute the offset of the
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# instruction in bar returned from foo. It is needed in the Dwarf
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# Assembler.
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}1
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set returned_from_foo ""
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if { [istarget "arm*-*-*"] || [istarget "aarch64*-*-*"] } {
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set call_insn "bl"
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} elseif { [istarget "s390*-*-*"] } {
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set call_insn "brasl"
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} elseif { [istarget "powerpc*-*-*"] } {
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set call_insn "bl"
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} elseif { [istarget "mips*-*-*"] } {
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# Skip the delay slot after the instruction used to make a call
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# (which can be a jump or a branch) if it has one.
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#
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# JUMP (or BRANCH) foo
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# insn1
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# insn2
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#
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# Most MIPS instructions used to make calls have a delay slot.
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# These include JAL, JALS, JALX, JALR, JALRS, BAL and BALS.
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# In this case the program continues from `insn2' when `foo'
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# returns. The only exception is JALRC, in which case execution
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# resumes from `insn1' instead.
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set call_insn {jalrc|[jb]al[sxr]*[ \t][^\r\n]+\r\n}
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} else {
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set call_insn "call"
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}
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# Calculate the offset of the instruction in bar returned from foo.
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set test "disassemble bar"
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gdb_test_multiple $test $test {
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-re ".*$hex <\\+$decimal>:\[ \t\]+\\y$call_insn\\y\[^\r\n\]+\r\n\[ \]+$hex <\\+($decimal)>:.*$gdb_prompt $" {
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set returned_from_foo $expect_out(1,string)
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}
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-re ".*$gdb_prompt $" {
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fail $test
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}
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}
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if { [string equal $returned_from_foo ""] } {
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fail "find the call or branch instruction offset in bar"
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# The following test makes no sense if the offset is unknown. We need
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# to update the pattern above to match call or branch instruction for
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# the target architecture.
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return -1
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}
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gdb_exit
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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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declare_labels int_label foo_label
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global returned_from_foo
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global srcdir subdir srcfile
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set bar_result [function_range bar ${srcdir}/${subdir}/${srcfile}]
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set bar_start [lindex $bar_result 0]
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set bar_length [lindex $bar_result 1]
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cu {} {
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compile_unit {{language @DW_LANG_C}} {
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int_label: base_type {
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{name int}
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{encoding @DW_ATE_signed}
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{byte_size 4 DW_FORM_sdata}
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}
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foo_label: subprogram {
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{decl_file 0 udata}
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{MACRO_AT_func { foo }}
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} {
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formal_parameter {
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{type :$int_label}
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{name i}
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{location {DW_OP_reg0} SPECIAL_expr}
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}
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formal_parameter {
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{type :$int_label}
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{name j}
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{location {DW_OP_reg1} SPECIAL_expr}
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}
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}
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subprogram {
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{name bar}
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{decl_file 0 udata}
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{low_pc $bar_start addr}
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{high_pc "$bar_start + $bar_length" addr}
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{GNU_all_call_sites 1 sdata}
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} {
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formal_parameter {
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{type :$int_label}
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{name i}
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}
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GNU_call_site {
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{low_pc "$bar_start + $returned_from_foo" addr}
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{abstract_origin :$foo_label}
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} {
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# Faked entry values are reference to variables 'global1'
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# and 'global2' and faked locations are register 0 and
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# register 1.
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GNU_call_site_parameter {
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{location {DW_OP_reg0} SPECIAL_expr}
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{GNU_call_site_value {
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addr global1
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deref_size 4
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} SPECIAL_expr}
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}
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GNU_call_site_parameter {
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{location {DW_OP_reg1} SPECIAL_expr}
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{GNU_call_site_value {
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addr global2
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deref_size 4
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} SPECIAL_expr}
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}
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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 {[gdb_compile $asm_file ${binfile}2.o object {nodebug}] != ""} {
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return -1
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}
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if {[gdb_compile [list ${binfile}1.o ${binfile}2.o] \
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"${binfile}" executable {}] != ""} {
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return -1
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}
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clean_restart ${testfile}
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if ![runto_main] {
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fail "can't run to main"
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return -1
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}
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gdb_breakpoint "foo"
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gdb_continue_to_breakpoint "foo"
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gdb_test_no_output "set print entry-values both"
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gdb_test_sequence "bt" "bt (1)" {
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"\[\r\n\]#0 .* foo \\(i=[-]?[0-9]+, i@entry=2, j=[-]?[0-9]+, j@entry=3\\)"
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"\[\r\n\]#1 .* bar \\(i=<optimized out>, i@entry=<optimized out>\\)"
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"\[\r\n\]#2 .* \.?main \\(\\)"
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}
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# Update global variables 'global1' and 'global2' and test that the
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# entry values are updated too.
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gdb_test_no_output "set var *(int *) &global1=10"
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gdb_test_no_output "set var *(int *) &global2=11"
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gdb_test_sequence "bt" "bt (2)" {
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"\[\r\n\]#0 .* foo \\(i=[-]?[0-9]+, i@entry=10, j=[-]?[0-9]+, j@entry=11\\)"
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"\[\r\n\]#1 .* bar \\(i=<optimized out>, i@entry=<optimized out>\\)"
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"\[\r\n\]#2 .* \.?main \\(\\)"
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}
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# Restart GDB and trace.
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clean_restart $binfile
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load_lib "trace-support.exp"
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if ![runto_main] {
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fail "can't run to main to check for trace support"
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return -1
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}
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if ![gdb_target_supports_trace] {
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unsupported "target does not support trace"
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return -1
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}
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gdb_test "trace foo" "Tracepoint $decimal at .*"
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# Collect arguments i and j. Collect 'global1' which is entry value
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# of argument i. Don't collect 'global2' to test the entry value of
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# argument j.
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gdb_trace_setactions "set action for tracepoint 1" "" \
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"collect i, j, (int) global1, \(\*\(void \*\*\) \(\$$spreg\)\) @ 128" "^$"
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gdb_test_no_output "tstart"
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gdb_breakpoint "end"
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gdb_continue_to_breakpoint "end"
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gdb_test_no_output "tstop"
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gdb_test "tfind" "Found trace frame 0, .*" "tfind start"
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# Since 'global2' is not collected, j@entry is expected to be 'unavailable'.
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gdb_test "bt 1" "#0 .* foo \\(i=\[-\]?$decimal, i@entry=2, j=\[-\]?$decimal, j@entry=<unavailable>\\).*"
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# Test that unavailable "j@entry" is not shown when command option
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# --skip-unavailable is used.
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gdb_test "interpreter-exec mi \"-stack-list-arguments --skip-unavailable --simple-values\"" \
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"\r\n\\^done,stack-args=\\\[frame={level=\"0\",args=\\\[{name=\"i\",type=\"int\",value=\".*\"},{name=\"i@entry\",type=\"int\",value=\"2\"},{name=\"j\",type=\"int\",value=\".*\"}\\\]},frame=.*\\\].*"
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gdb_test "tfind" "Target failed to find requested trace frame\..*"
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