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From: Peter Maydell <peter.maydell@linaro.org>
To: qemu-devel@nongnu.org
Subject: [PULL 35/45] linux-user/aarch64: Add SM bit to SVE signal context
Date: Mon, 11 Jul 2022 14:57:40 +0100
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From: Richard Henderson <richard.henderson@linaro.org>
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>
---
linux-user/aarch64/signal.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/linux-user/aarch64/signal.c b/linux-user/aarch64/signal.c
index 7da0e36c6d4..3cef2f44cf5 100644
--- a/linux-user/aarch64/signal.c
+++ b/linux-user/aarch64/signal.c
@@ -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))
=20
+#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;
=20
+ 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);
+ }
=20
/* Note that SVE regs are stored as a byte stream, with each byte elem=
ent
* at a subsequent address. This corresponds to a little-endian store
--=20
2.25.1