diff options
Diffstat (limited to 'usr/src/uts/intel/sys/fp.h')
| -rw-r--r-- | usr/src/uts/intel/sys/fp.h | 90 |
1 files changed, 87 insertions, 3 deletions
diff --git a/usr/src/uts/intel/sys/fp.h b/usr/src/uts/intel/sys/fp.h index 4956e2d318..3373484dec 100644 --- a/usr/src/uts/intel/sys/fp.h +++ b/usr/src/uts/intel/sys/fp.h @@ -19,6 +19,8 @@ * CDDL HEADER END */ /* + * Copyright 2015 Nexenta Systems, Inc. All rights reserved. + * * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved. */ @@ -168,6 +170,91 @@ extern "C" { "\20\20fz\17ru\16rd\15pm\14um\13om\12zm\11dm" \ "\10im\7daz\6pe\5ue\4oe\3ze\2de\1ie" +/* + * This structure is written to memory by an 'fnsave' instruction + */ +struct fnsave_state { + uint16_t f_fcw; + uint16_t __f_ign0; + uint16_t f_fsw; + uint16_t __f_ign1; + uint16_t f_ftw; + uint16_t __f_ign2; + uint32_t f_eip; + uint16_t f_cs; + uint16_t f_fop; + uint32_t f_dp; + uint16_t f_ds; + uint16_t __f_ign3; + union { + uint16_t fpr_16[5]; /* 80-bits of x87 state */ + } f_st[8]; +}; /* 108 bytes */ + +/* + * This structure is written to memory by an 'fxsave' instruction + * Note the variant behaviour of this instruction between long mode + * and legacy environments! + */ +struct fxsave_state { + uint16_t fx_fcw; + uint16_t fx_fsw; + uint16_t fx_fctw; /* compressed tag word */ + uint16_t fx_fop; +#if defined(__amd64) + uint64_t fx_rip; + uint64_t fx_rdp; +#else + uint32_t fx_eip; + uint16_t fx_cs; + uint16_t __fx_ign0; + uint32_t fx_dp; + uint16_t fx_ds; + uint16_t __fx_ign1; +#endif + uint32_t fx_mxcsr; + uint32_t fx_mxcsr_mask; + union { + uint16_t fpr_16[5]; /* 80-bits of x87 state */ + u_longlong_t fpr_mmx; /* 64-bit mmx register */ + uint32_t __fpr_pad[4]; /* (pad out to 128-bits) */ + } fx_st[8]; +#if defined(__amd64) + upad128_t fx_xmm[16]; /* 128-bit registers */ + upad128_t __fx_ign2[6]; +#else + upad128_t fx_xmm[8]; /* 128-bit registers */ + upad128_t __fx_ign2[14]; +#endif +}; /* 512 bytes */ + +/* + * This structure is written to memory by an 'xsave' instruction. + * First 512 byte is compatible with the format of an 'fxsave' area. + */ +struct xsave_state { + struct fxsave_state xs_fxsave; + uint64_t xs_xstate_bv; /* 512 */ + uint64_t xs_rsv_mbz[2]; + uint64_t xs_reserved[5]; + upad128_t xs_ymm[16]; /* avx - 576 */ +}; /* 832 bytes, asserted in fpnoextflt() */ + +/* + * Kernel's FPU save area + */ +typedef struct { + union _kfpu_u { + struct fxsave_state kfpu_fx; +#if defined(__i386) + struct fnsave_state kfpu_fn; +#endif + struct xsave_state kfpu_xs; + } kfpu_u; + uint32_t kfpu_status; /* saved at #mf exception */ + uint32_t kfpu_xstatus; /* saved at #xm exception */ +} kfpu_t; + extern int fp_kind; /* kind of fp support */ extern int fp_save_mech; /* fp save/restore mechanism */ extern int fpu_exists; /* FPU hw exists */ @@ -188,9 +275,6 @@ extern void fpxsave_ctxt(void *); extern void xsave_ctxt(void *); extern void (*fpsave_ctxt)(void *); -struct fnsave_state; -struct fxsave_state; -struct xsave_state; extern void fxsave_insn(struct fxsave_state *); extern void fpsave(struct fnsave_state *); extern void fprestore(struct fnsave_state *); |