Commit 58709f6f authored by Benjamin Gray's avatar Benjamin Gray Committed by Michael Ellerman
Browse files

selftests/powerpc/ptrace: Update ptrace-perf watchpoint selftest 



Now that ptrace and perf are no longer exclusive, update the
test to exercise interesting interactions.

An assembly file is used for the children to allow precise instruction
choice and addresses, while avoiding any compiler quirks.

Signed-off-by: default avatarBenjamin Gray <bgray@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230801011744.153973-7-bgray@linux.ibm.com
parent bd29813a

tools/testing/selftests/powerpc/ptrace/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ $(TM_TESTS): CFLAGS += -I../tm -mhtm 
CFLAGS += $(KHDR_INCLUDES) -fno-pie



$(OUTPUT)/ptrace-gpr: ptrace-gpr.S

$(OUTPUT)/ptrace-perf-hwbreak: ptrace-perf-asm.S

$(OUTPUT)/ptrace-pkey $(OUTPUT)/core-pkey: LDLIBS += -pthread



$(TEST_GEN_PROGS): ../harness.c ../utils.c ../lib/reg.S

tools/testing/selftests/powerpc/ptrace/ptrace-perf-asm.S

0 → 100644
+33 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-or-later */



#include <ppc-asm.h>



.global same_watch_addr_load

.global same_watch_addr_trap



FUNC_START(same_watch_addr_child)

	nop

same_watch_addr_load:

	ld 0,0(3)

	nop

same_watch_addr_trap:

	trap

	blr

FUNC_END(same_watch_addr_child)





.global perf_then_ptrace_load1

.global perf_then_ptrace_load2

.global perf_then_ptrace_trap



FUNC_START(perf_then_ptrace_child)

	nop

perf_then_ptrace_load1:

	ld 0,0(3)

perf_then_ptrace_load2:

	ld 0,0(4)

	nop

perf_then_ptrace_trap:

	trap

	blr

FUNC_END(perf_then_ptrace_child)

tools/testing/selftests/powerpc/ptrace/ptrace-perf-hwbreak.c

+334 −548

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