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Dwarf assembler: handle one instruction function

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On aarch64, we got the following fail:

(gdb) disassemble func
Dump of assembler code for function func:
   0x0000000000400730 <+0>:     ret
End of assembler dump.^M
(gdb) x/2i func+0^M
   0x400730 <func>:     ret^M
   0x400734 <main>:     stp     x29, x30, [sp,#-16]!^M
(gdb) FAIL: gdb.dwarf2/dw2-ifort-parameter.exp: x/2i func+0

the pattern in proc function_range expects to match <func+0>, however,
GDB doesn't display the offset when it is zero.  This patch is to
adjust the pattern when $func_length is zero.

gdb/testsuite:

2015-02-26  Yao Qi  <yao.qi@linaro.org>

	* lib/dwarf.exp (function_range): Adjust pattern when $func_length
	is zero.
This commit is contained in:
Yao Qi 2015-02-26 14:21:19 +00:00
parent 80c570537e
commit 03eddd80d7
2 changed files with 11 additions and 1 deletions
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5
gdb/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2015-02-26 Yao Qi <yao.qi@linaro.org>
* lib/dwarf.exp (function_range): Adjust pattern when $func_length
is zero.
2015-02-26 Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.arch/cordic.ko.bz2: New file.

7
gdb/testsuite/lib/dwarf.exp
View file

@ -146,9 +146,14 @@ proc function_range { func src } {
}
# Compute the size of the last instruction.
if { $func_length == 0 } then {
set func_pattern "$func"
} else {
set func_pattern "$func\\+$func_length"
}
set test "x/2i $func+$func_length"
gdb_test_multiple $test $test {
-re ".*($hex) <$func\\+$func_length>:\[^\r\n\]+\r\n\[ \]+($hex).*\.\r\n$gdb_prompt $" {
-re ".*($hex) <$func_pattern>:\[^\r\n\]+\r\n\[ \]+($hex).*\.\r\n$gdb_prompt $" {
set start $expect_out(1,string)
set end $expect_out(2,string)