35f612b88a
and POWER8. This instruction set unifies the 32 64-bit scalar floating point registers with the 32 128-bit vector registers into a single bank of 64 128-bit registers. Kernel support mostly amounts to saving and restoring the wider version of the floating point registers and making sure that both scalar FP and vector registers are enabled once a VSX instruction is executed. get_mcontext() and friends currently cannot see the high bits, which will require a little more work. As the system compiler (GCC 4.2) does not support VSX, making use of this from userland requires either newer GCC or clang. Relnotes: yes Sponsored by: FreeBSD Foundation
93 lines
1.8 KiB
C
93 lines
1.8 KiB
C
/* $NetBSD: reg.h,v 1.4 2000/06/04 09:30:44 tsubai Exp $ */
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/* $FreeBSD$ */
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#ifndef _POWERPC_REG_H_
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#define _POWERPC_REG_H_
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#if defined(_KERNEL) && !defined(KLD_MODULE) && !defined(_STANDALONE)
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#include "opt_compat.h"
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#endif
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/* Must match struct trapframe */
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struct reg {
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register_t fixreg[32];
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register_t lr;
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register_t cr;
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register_t xer;
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register_t ctr;
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register_t pc;
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};
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/* Must match pcb.pcb_fpu */
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struct fpreg {
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union {
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double fpr;
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uint64_t vsr[2];
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} fpreg[32];
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double fpscr;
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};
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/* Must match pcb.pcb_vec */
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struct vmxreg {
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uint32_t vr[32][4];
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uint32_t pad[2];
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uint32_t vrsave;
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uint32_t vscr;
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};
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struct dbreg {
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unsigned int junk;
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};
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#ifdef COMPAT_FREEBSD32
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/* Must match struct trapframe */
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struct reg32 {
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int32_t fixreg[32];
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int32_t lr;
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int32_t cr;
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int32_t xer;
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int32_t ctr;
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int32_t pc;
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};
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struct fpreg32 {
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struct fpreg data;
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};
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struct vmxreg32 {
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struct vmxreg data;
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};
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struct dbreg32 {
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struct dbreg data;
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};
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#endif
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#ifdef _KERNEL
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/*
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* XXX these interfaces are MI, so they should be declared in a MI place.
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*/
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int fill_regs(struct thread *, struct reg *);
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int set_regs(struct thread *, struct reg *);
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int fill_fpregs(struct thread *, struct fpreg *);
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int set_fpregs(struct thread *, struct fpreg *);
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int fill_dbregs(struct thread *, struct dbreg *);
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int set_dbregs(struct thread *, struct dbreg *);
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#ifdef COMPAT_FREEBSD32
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struct image_params;
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int fill_regs32(struct thread *, struct reg32 *);
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int set_regs32(struct thread *, struct reg32 *);
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void ppc32_setregs(struct thread *, struct image_params *, u_long);
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#define fill_fpregs32(td, reg) fill_fpregs(td,(struct fpreg *)reg)
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#define set_fpregs32(td, reg) set_fpregs(td,(struct fpreg *)reg)
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#define fill_dbregs32(td, reg) fill_dbregs(td,(struct dbreg *)reg)
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#define set_dbregs32(td, reg) set_dbregs(td,(struct dbreg *)reg)
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#endif
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#endif
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#endif /* _POWERPC_REG_H_ */
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