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Clean up gdb.trace/entry-values.exp

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This patch is to clean up gdb.trace/entry-values.exp as a preparation
of the next patch.  It updates the comments to reflect the code.

One DIE generated in dwarf assembler is

 		GNU_call_site {
		    {low_pc "$bar_start + $bar_call_foo" addr}
 		    {abstract_origin :$foo_label}

the DW_AT_low_pc attribute is the return address after the call, so I
rename variable bar_call_foo to returned_from_foo.

gdb/testsuite:

2014-12-29  Yao Qi  <yao@codesourcery.com>

	* gdb.trace/entry-values.exp: Update comments.  Rename variable
	bar_call_foo to returned_from_foo.
This commit is contained in:
Yao Qi 2014-12-29 11:56:51 +08:00
parent 91529dc5ce
commit 9d85a0ec6b
2 changed files with 14 additions and 9 deletions
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5
gdb/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2014-12-29 Yao Qi <yao@codesourcery.com>
* gdb.trace/entry-values.exp: Update comments. Rename variable
bar_call_foo to returned_from_foo.
2014-12-20 Mihail-Marian Nistor <mihail.nistor@freescale.com>
PR gdb/17394

18
gdb/testsuite/gdb.trace/entry-values.exp
View File

@ -26,16 +26,16 @@ if {[gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile}1.o \
return -1
}
# Start GDB and load object file, compute the function length and
# the offset of branch instruction in function. They are needed
# in the Dwarf Assembler below.
# Start GDB and load object file, compute the offset of the
# instruction in bar returned from foo. It is needed in the Dwarf
# Assembler.
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}1.o
set bar_call_foo ""
set returned_from_foo ""
if { [istarget "arm*-*-*"] || [istarget "aarch64*-*-*"] } {
set call_insn "bl"
@ -47,18 +47,18 @@ if { [istarget "arm*-*-*"] || [istarget "aarch64*-*-*"] } {
set call_insn "call"
}
# Calculate the offset of the instruction bar calls foo.
# Calculate the offset of the instruction in bar returned from foo.
set test "disassemble bar"
gdb_test_multiple $test $test {
-re ".*$hex <\\+$decimal>:\[ \t\]+$call_insn\[^\r\n\]+\r\n\[ \]+$hex <\\+($decimal)>:.*$gdb_prompt $" {
set bar_call_foo $expect_out(1,string)
set returned_from_foo $expect_out(1,string)
}
-re ".*$gdb_prompt $" {
fail $test
}
}
if { [string equal $bar_call_foo ""] } {
if { [string equal $returned_from_foo ""] } {
fail "Find the call or branch instruction offset in bar"
# The following test makes no sense if the offset is unknown. We need
# to update the pattern above to match call or branch instruction for
@ -72,7 +72,7 @@ gdb_exit
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
declare_labels int_label foo_label
global bar_call_foo
global returned_from_foo
global srcdir subdir srcfile
set bar_result [function_range bar ${srcdir}/${subdir}/${srcfile}]
@ -116,7 +116,7 @@ Dwarf::assemble $asm_file {
}
GNU_call_site {
{low_pc "$bar_start + $bar_call_foo" addr}
{low_pc "$bar_start + $returned_from_foo" addr}
{abstract_origin :$foo_label}
} {
# Faked entry values are reference to variables 'global1'