diff options
| author | Szabolcs Nagy <nsz@port70.net> | 2018-02-02 20:58:20 +0000 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2018-02-22 18:51:32 -0500 |
| commit | 9bed82df305f5d1b7ebc36d0ac7a75d4f834e69b (patch) | |
| tree | c008a88179120aeb3938dd915b1ae8bef9721102 /arch | |
| parent | 74ab4b828475bdd2afa76eb7c9e9808e7c872c1c (diff) | |
| download | musl-9bed82df305f5d1b7ebc36d0ac7a75d4f834e69b.tar.gz musl-9bed82df305f5d1b7ebc36d0ac7a75d4f834e69b.tar.xz musl-9bed82df305f5d1b7ebc36d0ac7a75d4f834e69b.zip | |
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')
| -rw-r--r-- | arch/aarch64/bits/signal.h | 39 |
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]; |