mirror of
git://git.musl-libc.org/musl
synced 2025-01-23 15:13:43 +00:00
4ffa706899
the ABI type for the vector registers in fpregset_t, struct fpsimd_context, and struct user_fpsimd_struct is __uint128_t, which was presumably originally not used because it's a nonstandard type, but its existence is mandated by the aarch64 psABI. use of the wrong type here broke software using these structures, and encouraged incorrect fixes with casts rather than reinterpretation of representation.
154 lines
3.9 KiB
C
154 lines
3.9 KiB
C
#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
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|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#define MINSIGSTKSZ 6144
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#define SIGSTKSZ 12288
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#endif
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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typedef unsigned long greg_t;
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typedef unsigned long gregset_t[34];
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typedef struct {
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__uint128_t vregs[32];
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unsigned int fpsr;
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unsigned int fpcr;
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} fpregset_t;
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typedef struct sigcontext {
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unsigned long fault_address;
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unsigned long regs[31];
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unsigned long sp, pc, pstate;
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long double __reserved[256];
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} mcontext_t;
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#define FPSIMD_MAGIC 0x46508001
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#define ESR_MAGIC 0x45535201
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#define EXTRA_MAGIC 0x45585401
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#define SVE_MAGIC 0x53564501
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struct _aarch64_ctx {
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unsigned int magic;
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unsigned int size;
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};
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struct fpsimd_context {
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struct _aarch64_ctx head;
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unsigned int fpsr;
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unsigned int fpcr;
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__uint128_t vregs[32];
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};
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struct esr_context {
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struct _aarch64_ctx head;
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unsigned long esr;
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};
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struct extra_context {
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struct _aarch64_ctx head;
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unsigned long datap;
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unsigned int size;
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unsigned int __reserved[3];
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};
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struct sve_context {
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struct _aarch64_ctx head;
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unsigned short vl;
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unsigned short __reserved[3];
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};
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#define SVE_VQ_BYTES 16
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#define SVE_VQ_MIN 1
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#define SVE_VQ_MAX 512
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#define SVE_VL_MIN (SVE_VQ_MIN * SVE_VQ_BYTES)
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#define SVE_VL_MAX (SVE_VQ_MAX * SVE_VQ_BYTES)
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#define SVE_NUM_ZREGS 32
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#define SVE_NUM_PREGS 16
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#define sve_vl_valid(vl) \
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((vl) % SVE_VQ_BYTES == 0 && (vl) >= SVE_VL_MIN && (vl) <= SVE_VL_MAX)
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#define sve_vq_from_vl(vl) ((vl) / SVE_VQ_BYTES)
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#define sve_vl_from_vq(vq) ((vq) * SVE_VQ_BYTES)
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#define SVE_SIG_ZREG_SIZE(vq) ((unsigned)(vq) * SVE_VQ_BYTES)
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#define SVE_SIG_PREG_SIZE(vq) ((unsigned)(vq) * (SVE_VQ_BYTES / 8))
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#define SVE_SIG_FFR_SIZE(vq) SVE_SIG_PREG_SIZE(vq)
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#define SVE_SIG_REGS_OFFSET \
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((sizeof(struct sve_context) + (SVE_VQ_BYTES - 1)) \
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/ SVE_VQ_BYTES * SVE_VQ_BYTES)
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#define SVE_SIG_ZREGS_OFFSET SVE_SIG_REGS_OFFSET
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#define SVE_SIG_ZREG_OFFSET(vq, n) \
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(SVE_SIG_ZREGS_OFFSET + SVE_SIG_ZREG_SIZE(vq) * (n))
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#define SVE_SIG_ZREGS_SIZE(vq) \
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(SVE_SIG_ZREG_OFFSET(vq, SVE_NUM_ZREGS) - SVE_SIG_ZREGS_OFFSET)
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#define SVE_SIG_PREGS_OFFSET(vq) \
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(SVE_SIG_ZREGS_OFFSET + SVE_SIG_ZREGS_SIZE(vq))
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#define SVE_SIG_PREG_OFFSET(vq, n) \
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(SVE_SIG_PREGS_OFFSET(vq) + SVE_SIG_PREG_SIZE(vq) * (n))
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#define SVE_SIG_PREGS_SIZE(vq) \
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(SVE_SIG_PREG_OFFSET(vq, SVE_NUM_PREGS) - SVE_SIG_PREGS_OFFSET(vq))
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#define SVE_SIG_FFR_OFFSET(vq) \
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(SVE_SIG_PREGS_OFFSET(vq) + SVE_SIG_PREGS_SIZE(vq))
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#define SVE_SIG_REGS_SIZE(vq) \
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(SVE_SIG_FFR_OFFSET(vq) + SVE_SIG_FFR_SIZE(vq) - SVE_SIG_REGS_OFFSET)
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#define SVE_SIG_CONTEXT_SIZE(vq) (SVE_SIG_REGS_OFFSET + SVE_SIG_REGS_SIZE(vq))
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#else
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typedef struct {
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long double __regs[18+256];
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} mcontext_t;
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#endif
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struct sigaltstack {
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void *ss_sp;
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int ss_flags;
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size_t ss_size;
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};
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typedef struct __ucontext {
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unsigned long uc_flags;
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struct __ucontext *uc_link;
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stack_t uc_stack;
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sigset_t uc_sigmask;
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mcontext_t uc_mcontext;
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} ucontext_t;
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#define SA_NOCLDSTOP 1
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#define SA_NOCLDWAIT 2
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#define SA_SIGINFO 4
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#define SA_ONSTACK 0x08000000
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#define SA_RESTART 0x10000000
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#define SA_NODEFER 0x40000000
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#define SA_RESETHAND 0x80000000
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#define SA_RESTORER 0x04000000
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#endif
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#define SIGHUP 1
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#define SIGINT 2
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#define SIGQUIT 3
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#define SIGILL 4
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#define SIGTRAP 5
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#define SIGABRT 6
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#define SIGIOT SIGABRT
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#define SIGBUS 7
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#define SIGFPE 8
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#define SIGKILL 9
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#define SIGUSR1 10
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#define SIGSEGV 11
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#define SIGUSR2 12
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#define SIGPIPE 13
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#define SIGALRM 14
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#define SIGTERM 15
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#define SIGSTKFLT 16
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#define SIGCHLD 17
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#define SIGCONT 18
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#define SIGSTOP 19
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#define SIGTSTP 20
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#define SIGTTIN 21
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#define SIGTTOU 22
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#define SIGURG 23
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#define SIGXCPU 24
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#define SIGXFSZ 25
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#define SIGVTALRM 26
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#define SIGPROF 27
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#define SIGWINCH 28
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#define SIGIO 29
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#define SIGPOLL 29
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#define SIGPWR 30
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#define SIGSYS 31
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#define SIGUNUSED SIGSYS
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#define _NSIG 65
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