140 lines
3.7 KiB
C
140 lines
3.7 KiB
C
/* $NetBSD: ieee_handler.h,v 1.4 1998/09/02 19:17:12 matthias Exp $ */
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/*
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* IEEE floating point support for NS32081 and NS32381 fpus.
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* Copyright (c) 1995 Ian Dall
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* IAN DALL ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION.
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* IAN DALL DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES
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* WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*/
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/*
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* File: ieee_handler.h
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* Author: Ian Dall
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* Date: November 1995
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*
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* Prototypes for entry points. Customization for in kernel version
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* or unix signal handler version.
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*
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* HISTORY
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* 02-Apr-96 Matthias Pfaller <leo@dachau.marco.de>)
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* Add NetBSD kernel support.
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*
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* 14-Dec-95 Ian Dall (Ian.Dall@dsto.defence.gov.au)
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* First release.
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*
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*/
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#ifndef _IEEE_HANDLER_H_
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#define _IEEE_HANDLER_H_
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#if defined(KERNEL) || defined(_KERNEL)
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#ifdef MACH
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#include <ns532/thread.h>
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#include <mach/vm_param.h>
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#include "mach_kdb.h"
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#if MACH_KDB
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#define DEBUG
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#endif
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typedef struct {
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struct ns532_saved_state *regs;
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struct ns532_fp_state *fps;
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} state;
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#define LREGBASE(s) ((vaddr_t) (s)->fps)
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#define LREGOFFSET(n) offsetof(struct ns532_fp_state, regs.l.l ## n)
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#define FREGBASE(s) ((vaddr_t) (s)->fps)
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#define FREGOFFSET(n) offsetof(struct ns532_fp_state, regs.f.f ## n)
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#define REGBASE(s) ((vaddr_t) (s)->regs)
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#define REGOFFSET(n) offsetof(struct ns532_saved_state, r ## n)
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#define FSR fps->fsr
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#define FP regs->fp
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#define SP regs->usp
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#define SB regs->sb
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#define PC regs->pc
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#define PSR regs->psr
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#elif defined(__NetBSD__) /* MACH */
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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typedef struct proc state;
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#define LREGBASE(s) ((vaddr_t) (s)->p_addr->u_pcb.pcb_freg)
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#define LREGOFFSET(n) (n * sizeof(double))
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#define FREGBASE(s) ((vaddr_t) (s)->p_addr->u_pcb.pcb_freg)
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#define FREGOFFSET(n) ((n & ~1) * sizeof(double) + (n & 1) * sizeof(float))
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#define REGBASE(s) ((vaddr_t) (s)->p_md.md_regs)
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#define REGOFFSET(n) offsetof(struct reg, r_r ## n)
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#define FSR p_addr->u_pcb.pcb_fsr
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#define FP p_md.md_regs->r_fp
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#define SP p_md.md_regs->r_sp
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#define SB p_md.md_regs->r_sb
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#define PC p_md.md_regs->r_pc
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#define PSR p_md.md_regs->r_psr
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#define PSR_N PSL_N
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#define PSR_Z PSL_Z
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#define PSR_L PSL_L
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#else /* __NetBSD__ */
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#error OS unsupported
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#endif /* __NetBSD__ */
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#else /* KERNEL || _KERNEL */
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#include <signal.h>
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struct fstate {
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unsigned int fsr;
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union {
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struct { double l0, l2, l4, l6, l1, l3, l5, l7;} l;
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struct { float f0, f1, f2, f3, f4, f5, f6, f7;} f;
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} regs;
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};
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struct ns532_combined_state {
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struct sigcontext *scp;
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struct fstate fs;
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};
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typedef struct ns532_combined_state state;
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#define LREG(REG) fs.regs.l.l ## REG
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#define LREGBASE(s) ((vaddr_t) &(s)->fs)
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#define LREGOFFSET(n) offsetof(struct fstate, regs.l.l ## n)
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#define FREGBASE(s) ((vaddr_t) &(s)->fs)
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#define FREGOFFSET(n) offsetof(struct fstate, regs.f.f ## n)
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#define REGBASE(s) ((vaddr_t) (s)->scp)
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#define REGOFFSET(n) offsetof(struct sigcontext, sc_reg[n])
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#define FSR fs.fsr
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#define FP scp->sc_fp
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#define SP scp->sc_sp
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#define SB scp->sc_sb
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#define PC scp->sc_pc
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#define PSR scp->sc_ps
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int ieee_sig(int sig, int code, struct sigcontext *scp);
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#ifdef __NetBSD__
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#define PSR_N PSL_N
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#define PSR_Z PSL_Z
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#define PSR_L PSL_L
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#endif /* __NetBSD */
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#endif /* KERNEL */
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int ieee_handle_exception(state *state);
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#endif /* _IEEE_HANDLER_H_ */
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