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linux-user/aarch64: Add SM bit to SVE signal context 

Make sure to zero the currently reserved fields.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220708151540.18136-36-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2022-07-08 20:45:30 +05:30 committed by Peter Maydell
parent 2a98579711
commit 4a29c36316
1 changed files with 8 additions and 1 deletions
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9
linux-user/aarch64/signal.c
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@ -78,7 +78,8 @@ struct target_extra_context {
struct target_sve_context {
struct target_aarch64_ctx head;
uint16_t vl;
uint16_t reserved[3];
uint16_t flags;
uint16_t reserved[2];
/* The actual SVE data immediately follows. It is laid out
* according to TARGET_SVE_SIG_{Z,P}REG_OFFSET, based off of
* the original struct pointer.
@ -101,6 +102,8 @@ struct target_sve_context {
#define TARGET_SVE_SIG_CONTEXT_SIZE(VQ) \
(TARGET_SVE_SIG_PREG_OFFSET(VQ, 17))
#define TARGET_SVE_SIG_FLAG_SM 1
struct target_rt_sigframe {
struct target_siginfo info;
struct target_ucontext uc;
@ -177,9 +180,13 @@ static void target_setup_sve_record(struct target_sve_context *sve,
{
int i, j;
memset(sve, 0, sizeof(*sve));
__put_user(TARGET_SVE_MAGIC, &sve->head.magic);
__put_user(size, &sve->head.size);
__put_user(vq * TARGET_SVE_VQ_BYTES, &sve->vl);
if (FIELD_EX64(env->svcr, SVCR, SM)) {
__put_user(TARGET_SVE_SIG_FLAG_SM, &sve->flags);
}
/* Note that SVE regs are stored as a byte stream, with each byte element
* at a subsequent address. This corresponds to a little-endian store