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tests/tcg/s390x: Test unaligned accesses

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Add a number of small test that check whether accessing unaligned
addresses in various ways leads to a specification exception.

Run these test both in softmmu and user configurations; expect a PGM
in one case and SIGILL in the other.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230316164428.275147-13-iii@linux.ibm.com>
[thuth: Added -Wl,--build-id=none to LDFLAGS]
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Ilya Leoshkevich 2023-03-16 17:44:28 +01:00 committed by Thomas Huth
parent ba1ef833be
commit e902126cae
17 changed files with 311 additions and 3 deletions
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15
tests/tcg/s390x/Makefile.softmmu-target
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@ -1,10 +1,14 @@
S390X_SRC=$(SRC_PATH)/tests/tcg/s390x
VPATH+=$(S390X_SRC)
QEMU_OPTS=-action panic=exit-failure -kernel
LINK_SCRIPT=$(S390X_SRC)/softmmu.ld
LDFLAGS=-nostdlib -static -Wl,-T$(LINK_SCRIPT) -Wl,--build-id=none
%: %.S
$(CC) -march=z13 -m64 -nostdlib -static -Wl,-Ttext=0 \
-Wl,--build-id=none $< -o $@
%.o: %.S
$(CC) -march=z13 -m64 -c $< -o $@
%: %.o $(LINK_SCRIPT)
$(CC) $< -o $@ $(LDFLAGS)
TESTS += unaligned-lowcore
TESTS += bal
@ -14,3 +18,8 @@ TESTS += lpswe-early
TESTS += ssm-early
TESTS += stosm-early
TESTS += exrl-ssm-early
include $(S390X_SRC)/pgm-specification.mak
$(PGM_SPECIFICATION_TESTS): pgm-specification-softmmu.o
$(PGM_SPECIFICATION_TESTS): LDFLAGS+=pgm-specification-softmmu.o
TESTS += $(PGM_SPECIFICATION_TESTS)

8
tests/tcg/s390x/Makefile.target
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@ -2,6 +2,9 @@ S390X_SRC=$(SRC_PATH)/tests/tcg/s390x
VPATH+=$(S390X_SRC)
CFLAGS+=-march=zEC12 -m64
%.o: %.c
$(CC) $(CFLAGS) $(EXTRA_CFLAGS) -c $< -o $@
config-cc.mak: Makefile
$(quiet-@)( \
$(call cc-option,-march=z14, CROSS_CC_HAS_Z14); \
@ -37,6 +40,11 @@ cdsg: LDFLAGS+=-pthread
rxsbg: CFLAGS+=-O2
include $(S390X_SRC)/pgm-specification.mak
$(PGM_SPECIFICATION_TESTS): pgm-specification-user.o
$(PGM_SPECIFICATION_TESTS): LDFLAGS+=pgm-specification-user.o
TESTS += $(PGM_SPECIFICATION_TESTS)
Z13_TESTS=vistr
$(Z13_TESTS): CFLAGS+=-march=z13 -O2
TESTS+=$(Z13_TESTS)

16
tests/tcg/s390x/br-odd.S Normal file
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@ -0,0 +1,16 @@
/*
* Test BRanching to a non-mapped odd address.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
.globl test
test:
lgrl %r1,odd_addr
br %r1
.align 8
odd_addr:
.quad 0xDDDDDDDDDDDDDDDD
.globl expected_old_psw
expected_old_psw:
.quad 0x180000000,0xDDDDDDDDDDDDDDDD

16
tests/tcg/s390x/cgrl-unaligned.S Normal file
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@ -0,0 +1,16 @@
/*
* Test CGRL with a non-doubleword aligned address.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
.globl test
test:
cgrl %r1,unaligned
.align 8
.globl expected_old_psw
expected_old_psw:
.quad 0x180000000,test
.long 0
unaligned:
.quad 0

16
tests/tcg/s390x/clrl-unaligned.S Normal file
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@ -0,0 +1,16 @@
/*
* Test CLRL with a non-word aligned address.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
.globl test
test:
clrl %r1,unaligned
.align 8
.globl expected_old_psw
expected_old_psw:
.quad 0x180000000,test
.short 0
unaligned:
.long 0

16
tests/tcg/s390x/crl-unaligned.S Normal file
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@ -0,0 +1,16 @@
/*
* Test CRL with a non-word aligned address.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
.globl test
test:
crl %r1,unaligned
.align 8
.globl expected_old_psw
expected_old_psw:
.quad 0x180000000,test
.short 0
unaligned:
.long 0

17
tests/tcg/s390x/ex-odd.S Normal file
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@ -0,0 +1,17 @@
/*
* Test EXECUTing a non-mapped odd address.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
.globl test
test:
lgrl %r1,odd_addr
fail:
ex 0,0(%r1)
.align 8
odd_addr:
.quad 0xDDDDDDDDDDDDDDDD
.globl expected_old_psw
expected_old_psw:
.quad 0x180000000,fail

16
tests/tcg/s390x/lgrl-unaligned.S Normal file
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@ -0,0 +1,16 @@
/*
* Test LGRL from a non-doubleword aligned address.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
.globl test
test:
lgrl %r1,unaligned
.align 8
.globl expected_old_psw
expected_old_psw:
.quad 0x180000000,test
.long 0
unaligned:
.quad 0

16
tests/tcg/s390x/llgfrl-unaligned.S Normal file
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@ -0,0 +1,16 @@
/*
* Test LLGFRL from a non-word aligned address.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
.globl test
test:
llgfrl %r1,unaligned
.align 8
.globl expected_old_psw
expected_old_psw:
.quad 0x180000000,test
.short 0
unaligned:
.long 0

18
tests/tcg/s390x/lpswe-unaligned.S Normal file
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@ -0,0 +1,18 @@
/*
* Test LPSWE from a non-doubleword aligned address.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
.globl test
test:
larl %r1,unaligned
fail:
lpswe 0(%r1)
.align 8
.globl expected_old_psw
expected_old_psw:
.quad 0x180000000,fail
.long 0
unaligned:
.quad 0

16
tests/tcg/s390x/lrl-unaligned.S Normal file
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@ -0,0 +1,16 @@
/*
* Test LRL from a non-word aligned address.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
.globl test
test:
lrl %r1,unaligned
.align 8
.globl expected_old_psw
expected_old_psw:
.quad 0x180000000,test
.short 0
unaligned:
.long 0

40
tests/tcg/s390x/pgm-specification-softmmu.S Normal file
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@ -0,0 +1,40 @@
/*
* Common softmmu code for specification exception testing.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
.section .head
.org 0x8d
ilc:
.org 0x8e
program_interruption_code:
.org 0x150
program_old_psw:
.org 0x1D0 /* program new PSW */
.quad 0x180000000,pgm /* 64-bit mode */
.org 0x200 /* lowcore padding */
.globl _start
_start:
lpswe test_psw
pgm:
chhsi program_interruption_code,0x6 /* PGM_SPECIFICATION? */
jne failure
lg %r0,expected_old_psw+8 /* ilc adjustment */
llgc %r1,ilc
agr %r0,%r1
stg %r0,expected_old_psw+8
clc expected_old_psw(16),program_old_psw /* correct location? */
jne failure
lpswe success_psw
failure:
lpswe failure_psw
.align 8
test_psw:
.quad 0x180000000,test /* 64-bit mode */
success_psw:
.quad 0x2000180000000,0xfff /* see is_special_wait_psw() */
failure_psw:
.quad 0x2000180000000,0 /* disabled wait */

37
tests/tcg/s390x/pgm-specification-user.c Normal file
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@ -0,0 +1,37 @@
/*
* Common user code for specification exception testing.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <assert.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
extern void test(void);
extern long expected_old_psw[2];
static void handle_sigill(int sig, siginfo_t *info, void *ucontext)
{
if ((long)info->si_addr != expected_old_psw[1]) {
_exit(EXIT_FAILURE);
}
_exit(EXIT_SUCCESS);
}
int main(void)
{
struct sigaction act;
int err;
memset(&act, 0, sizeof(act));
act.sa_sigaction = handle_sigill;
act.sa_flags = SA_SIGINFO;
err = sigaction(SIGILL, &act, NULL);
assert(err == 0);
test();
return EXIT_FAILURE;
}

15
tests/tcg/s390x/pgm-specification.mak Normal file
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@ -0,0 +1,15 @@
# SPDX-License-Identifier: GPL-2.0-or-later
# List of specification exception tests.
# Shared between the softmmu and the user makefiles.
PGM_SPECIFICATION_TESTS = \
br-odd \
cgrl-unaligned \
clrl-unaligned \
crl-unaligned \
ex-odd \
lgrl-unaligned \
llgfrl-unaligned \
lpswe-unaligned \
lrl-unaligned \
stgrl-unaligned \
strl-unaligned

20
tests/tcg/s390x/softmmu.ld Normal file
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@ -0,0 +1,20 @@
/*
* Linker script for the softmmu test kernels.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
ENTRY(_start)
SECTIONS {
. = 0;
.text : {
*(.head)
*(.text)
}
/DISCARD/ : {
*(*)
}
}

16
tests/tcg/s390x/stgrl-unaligned.S Normal file
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@ -0,0 +1,16 @@
/*
* Test STGRL to a non-doubleword aligned address.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
.globl test
test:
stgrl %r1,unaligned
.align 8
.globl expected_old_psw
expected_old_psw:
.quad 0x180000000,test
.long 0
unaligned:
.quad 0

16
tests/tcg/s390x/strl-unaligned.S Normal file
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@ -0,0 +1,16 @@
/*
* Test STRL to a non-word aligned address.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
.globl test
test:
strl %r1,unaligned
.align 8
.globl expected_old_psw
expected_old_psw:
.quad 0x180000000,test
.short 0
unaligned:
.long 0