Hi
On 13/08/2019 17:26, Dave Martin wrote:
> On Fri, Aug 02, 2019 at 06:02:57PM +0100, Cristian Marussi wrote:
>> Added a simple fake_sigreturn testcase which builds a ucontext_t
>
> Add
Ok
>
>> without the required fpsimd_context and place it onto the stack.
>> Expects a SIGSEGV on test PASS.
>>
>> Signed-off-by: Cristian Marussi <cristian.marussi@xxxxxxx>
>> ---
>> .../arm64/signal/testcases/.gitignore | 1 +
>> .../testcases/fake_sigreturn_missing_fpsimd.c | 44 +++++++++++++++++++
>> 2 files changed, 45 insertions(+)
>> create mode 100644 tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c
>>
>> diff --git a/tools/testing/selftests/arm64/signal/testcases/.gitignore b/tools/testing/selftests/arm64/signal/testcases/.gitignore
>> index cf2a73599818..17d1c5e73319 100644
>> --- a/tools/testing/selftests/arm64/signal/testcases/.gitignore
>> +++ b/tools/testing/selftests/arm64/signal/testcases/.gitignore
>> @@ -6,3 +6,4 @@ mangle_pstate_invalid_mode_el3
>> mangle_pstate_ssbs_regs
>> fake_sigreturn_bad_magic
>> fake_sigreturn_bad_size_for_magic0
>> +fake_sigreturn_missing_fpsimd
>> diff --git a/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c
>> new file mode 100644
>> index 000000000000..b8dd57ce6844
>> --- /dev/null
>> +++ b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_missing_fpsimd.c
>> @@ -0,0 +1,44 @@
>> +/* SPDX-License-Identifier: GPL-2.0 */
>> +/* Copyright (C) 2019 ARM Limited */
>> +
>
> signal.h?
>
Ok
>> +#include <stdio.h>
>> +#include <ucontext.h>
>> +
>> +#include "test_signals_utils.h"
>> +#include "testcases.h"
>> +
>> +struct fake_sigframe sf;
>> +
>> +static int fake_sigreturn_missing_fpsimd_run(struct tdescr *td,
>> + siginfo_t *si, ucontext_t *uc)
>> +{
>> + size_t resv_sz, offset;
>> + struct _aarch64_ctx *head = GET_SF_RESV_HEAD(sf);
>> +
>> + /* just to fill the ucontext_t with something real */
>> + if (!get_current_context(td, &sf.uc))
>> + return 1;
>> +
>> + resv_sz = GET_SF_RESV_SIZE(sf);
>> + head = get_header(head, FPSIMD_MAGIC, resv_sz, &offset);
>> + /* just give up and timeout if still not enough space */
>> + if (head && resv_sz - offset >= HDR_SZ) {
>> + fprintf(stderr, "Mangling template header. Spare space:%zd\n",
>> + resv_sz - offset);
>> + /* Just overwrite fpsmid_context */
>> + write_terminator_record(head);
>> +
>> + ASSERT_BAD_CONTEXT(&sf.uc);
>> + fake_sigreturn(&sf, sizeof(sf), 16);
>> + }
>> +
>> + return 1;
>> +}
>
> [...]
>
> Seems reasonable otherwise.
>
> Cheers
> ---Dave
>
