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authorSzabolcs Nagy <nsz@port70.net>2018-02-02 20:58:20 +0000
committerRich Felker <dalias@aerifal.cx>2018-02-22 18:51:32 -0500
commit9bed82df305f5d1b7ebc36d0ac7a75d4f834e69b (patch)
treec008a88179120aeb3938dd915b1ae8bef9721102 /arch/aarch64
parent74ab4b828475bdd2afa76eb7c9e9808e7c872c1c (diff)
downloadmusl-9bed82df305f5d1b7ebc36d0ac7a75d4f834e69b.tar.gz
aarch64: add sve_context struct and related defines from linux v4.15
signal context definitions for scalable vector extension new in commit d0b8cd3187889476144bd9b13bf36a932c3e7952
Diffstat (limited to 'arch/aarch64')
-rw-r--r--arch/aarch64/bits/signal.h39
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/aarch64/bits/signal.h b/arch/aarch64/bits/signal.h
index 1c67313d..b71261f5 100644
--- a/arch/aarch64/bits/signal.h
+++ b/arch/aarch64/bits/signal.h
@@ -25,6 +25,7 @@ typedef struct sigcontext {
#define FPSIMD_MAGIC 0x46508001
#define ESR_MAGIC 0x45535201
#define EXTRA_MAGIC 0x45585401
+#define SVE_MAGIC 0x53564501
struct _aarch64_ctx {
unsigned int magic;
unsigned int size;
@@ -45,6 +46,44 @@ struct extra_context {
unsigned int size;
unsigned int __reserved[3];
};
+struct sve_context {
+ struct _aarch64_ctx head;
+ unsigned short vl;
+ unsigned short __reserved[3];
+};
+#define SVE_VQ_BYTES 16
+#define SVE_VQ_MIN 1
+#define SVE_VQ_MAX 512
+#define SVE_VL_MIN (SVE_VQ_MIN * SVE_VQ_BYTES)
+#define SVE_VL_MAX (SVE_VQ_MAX * SVE_VQ_BYTES)
+#define SVE_NUM_ZREGS 32
+#define SVE_NUM_PREGS 16
+#define sve_vl_valid(vl) \
+ ((vl) % SVE_VQ_BYTES == 0 && (vl) >= SVE_VL_MIN && (vl) <= SVE_VL_MAX)
+#define sve_vq_from_vl(vl) ((vl) / SVE_VQ_BYTES)
+#define sve_vl_from_vq(vq) ((vq) * SVE_VQ_BYTES)
+#define SVE_SIG_ZREG_SIZE(vq) ((unsigned)(vq) * SVE_VQ_BYTES)
+#define SVE_SIG_PREG_SIZE(vq) ((unsigned)(vq) * (SVE_VQ_BYTES / 8))
+#define SVE_SIG_FFR_SIZE(vq) SVE_SIG_PREG_SIZE(vq)
+#define SVE_SIG_REGS_OFFSET \
+ ((sizeof(struct sve_context) + (SVE_VQ_BYTES - 1)) \
+ / SVE_VQ_BYTES * SVE_VQ_BYTES)
+#define SVE_SIG_ZREGS_OFFSET SVE_SIG_REGS_OFFSET
+#define SVE_SIG_ZREG_OFFSET(vq, n) \
+ (SVE_SIG_ZREGS_OFFSET + SVE_SIG_ZREG_SIZE(vq) * (n))
+#define SVE_SIG_ZREGS_SIZE(vq) \
+ (SVE_SIG_ZREG_OFFSET(vq, SVE_NUM_ZREGS) - SVE_SIG_ZREGS_OFFSET)
+#define SVE_SIG_PREGS_OFFSET(vq) \
+ (SVE_SIG_ZREGS_OFFSET + SVE_SIG_ZREGS_SIZE(vq))
+#define SVE_SIG_PREG_OFFSET(vq, n) \
+ (SVE_SIG_PREGS_OFFSET(vq) + SVE_SIG_PREG_SIZE(vq) * (n))
+#define SVE_SIG_PREGS_SIZE(vq) \
+ (SVE_SIG_PREG_OFFSET(vq, SVE_NUM_PREGS) - SVE_SIG_PREGS_OFFSET(vq))
+#define SVE_SIG_FFR_OFFSET(vq) \
+ (SVE_SIG_PREGS_OFFSET(vq) + SVE_SIG_PREGS_SIZE(vq))
+#define SVE_SIG_REGS_SIZE(vq) \
+ (SVE_SIG_FFR_OFFSET(vq) + SVE_SIG_FFR_SIZE(vq) - SVE_SIG_REGS_OFFSET)
+#define SVE_SIG_CONTEXT_SIZE(vq) (SVE_SIG_REGS_OFFSET + SVE_SIG_REGS_SIZE(vq))
#else
typedef struct {
long double __regs[18+256];