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x32: Fix gdb.trace/mi-trace-frame-collected.exp

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gdb.trace/mi-trace-frame-collected.exp has a couple failures on x32:

 FAIL: gdb.trace/mi-trace-frame-collected.exp: live: -trace-frame-collected (register)
 FAIL: gdb.trace/mi-trace-frame-collected.exp: tfile: -trace-frame-collected (register)

gdb.log:

 -trace-frame-collected
 ^done,explicit-variables=[{name="gdb_char_test",value="0 '\\000'"}],computed-expressions=[],registers=[{number="16",value="0x4004dc"},{number="204",value="0x4004dc"}],tvars
 =[],memory=[{address="0x00601060",length="1"}]
 (gdb)
 FAIL: gdb.trace/mi-trace-frame-collected.exp: live: -trace-frame-collected (register)
[...]
 -trace-frame-collected
 ^done,explicit-variables=[{name="gdb_char_test",value="0 '\\000'"}],computed-expressions=[],registers=[{number="16",value="0x4004dc"},{number="204",value="0x4004dc"}],tvars
 =[],memory=[{address="0x00601060",length="1"}]
 (gdb)
 FAIL: gdb.trace/mi-trace-frame-collected.exp: tfile: -trace-frame-collected (register)

This test only collects the PC, and thus expects to only see one
register in the output of -trace-frame-collected.  However, while on
the 64-bit ABI gdb only exposes 64-bit $pc/$rip (register 16 above),
on x32, GDB exposes 32-bit $eip as well, as a pseudo-register
(register 204 above).  Thus, collecting $pc/$rip automatically always
collects $eip as well.

gdb/testsuite/ChangeLog:
2016-08-19  Pedro Alves  <palves@redhat.com>

	* gdb.trace/mi-trace-frame-collected.exp
	(test_trace_frame_collected): On x32, expect two registers.
This commit is contained in:
Pedro Alves 2016-08-19 12:07:46 +01:00
parent f077e978de
commit 0646e07d6e
2 changed files with 17 additions and 2 deletions
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5
gdb/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2016-08-19 Pedro Alves <palves@redhat.com>
* gdb.trace/mi-trace-frame-collected.exp
(test_trace_frame_collected): On x32, expect two registers.
2016-08-18 Carl Love <cel@us.ibm.com>
* gdb.arch/powerpc-power.s: Add new Power9 instruction tests

14
gdb/testsuite/gdb.trace/mi-trace-frame-collected.exp
View File

@ -95,15 +95,25 @@ proc test_trace_frame_collected { data_source } {
# Test MI command '-trace-frame-collected' dumps only
# collected registers.
# While the tracepoint has no explicit action that causes
# collection of registers other than the PC, some
# architectures manage to collect or guess more than that.
if { [istarget "s390*-*-*"] } {
# Only PC is collected, but on s390 PC is a pseudo-register -
# collecting it also collects the underlying PSWA register.
# On s390 PC is a pseudo-register - collecting it also
# collects the underlying PSWA register.
if { "$data_source" != "tfile" } {
set reg_pattern "$reg_pattern,$reg_pattern"
} else {
# For tfile, PSWM and CC are also guessed.
set reg_pattern "$reg_pattern,$reg_pattern,$reg_pattern,$reg_pattern"
}
} elseif {[is_amd64_regs_target] && [is_ilp32_target]} {
# x32. While on the 64-bit ABI gdb only exposes 64-bit
# $pc/$rip, on x32, GDB exposes 32-bit $eip as well, as a
# pseudo-register. Thus, collecting $pc/$rip
# automatically always collects $eip as well.
set reg_pattern "$reg_pattern,$reg_pattern"
}
mi_gdb_test "-trace-frame-collected" \