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gdb.trace: Fix unavailable-dwarf-piece.exp on big endian targets 

The test constructs fake DWARF info for a C structure involving bitfields.
DWARF bitfields are always counted from LSB, while the order in which
bitfields are allocated in a C struct depends on the target endianness -
thus the generated DWARF marks different bitfields as unavailable when
target is big endian.  Accordingly, we need different expected outputs.

Tested on s390 and s390x, no regression on x86_64.

gdb/testsuite/ChangeLog:

	* gdb.trace/unavailable-dwarf-piece.exp: Fix bitfield handling on big
	endian targets.
This commit is contained in:
Marcin Kościelnicki 2016-01-23 13:17:34 +01:00
parent cc5fd9abe4
commit dc29a1ce6a
2 changed files with 22 additions and 3 deletions
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5
gdb/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2016-01-23 Marcin Kościelnicki <koriakin@0x04.net>
* gdb.trace/unavailable-dwarf-piece.exp: Fix bitfield handling on big
endian targets.
2016-01-22 Jan Kratochvil <jan.kratochvil@redhat.com>
Pedro Alves <palves@redhat.com>

20
gdb/testsuite/gdb.trace/unavailable-dwarf-piece.exp
View File

@ -325,10 +325,24 @@ with_test_prefix "tracing bar" {
gdb_test "continue" "Continuing\\.\[ \r\n\]+Breakpoint.*"
gdb_test_no_output "tstop"
set endian ""
gdb_test_multiple "show endian" "show endian" {
-re ".* (big|little) endian.*$gdb_prompt $" {
set endian $expect_out(1,string)
pass "endianness: $endian"
}
}
gdb_test "tfind 0" "Found trace frame 0, tracepoint .*"
gdb_test "p/d x" "\\\$${decimal} = {a = 0, b = <unavailable>, c = 0, d = 0, e = 0, f = 0, g = 0, h = 0, i = 0, j = 0}"
gdb_test "p/d y" "\\\$${decimal} = {a = 0, b = 0, c = 0, d = 0, e = <unavailable>, f = 0, g = 0, h = 0, i = 0, j = 0}"
gdb_test "p/d z" "\\\$${decimal} = {a = 0, b = 0, c = 0, d = 0, e = 0, f = 0, g = 0, h = 0, i = <unavailable>, j = 0}"
if { $endian == "little" } {
gdb_test "p/d x" "\\\$${decimal} = {a = 0, b = <unavailable>, c = 0, d = 0, e = 0, f = 0, g = 0, h = 0, i = 0, j = 0}"
gdb_test "p/d y" "\\\$${decimal} = {a = 0, b = 0, c = 0, d = 0, e = <unavailable>, f = 0, g = 0, h = 0, i = 0, j = 0}"
gdb_test "p/d z" "\\\$${decimal} = {a = 0, b = 0, c = 0, d = 0, e = 0, f = 0, g = 0, h = 0, i = <unavailable>, j = 0}"
} else {
gdb_test "p/d x" "\\\$${decimal} = {a = 0, b = 0, c = 0, d = 0, e = 0, f = 0, g = 0, h = 0, i = <unavailable>, j = 0}"
gdb_test "p/d y" "\\\$${decimal} = {a = 0, b = 0, c = 0, d = 0, e = 0, f = <unavailable>, g = 0, h = 0, i = 0, j = 0}"
gdb_test "p/d z" "\\\$${decimal} = {a = 0, b = <unavailable>, c = 0, d = 0, e = 0, f = 0, g = 0, h = 0, i = 0, j = 0}"
}
gdb_test "tfind none" "No longer looking at any trace frame.*"
}