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/*
* $NetBSD: armfpe.h,v 1.3 1996/03/18 19:54:53 mark Exp $
*
* Copyright (c) 1995 Neil A Carson.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Brini.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* RiscBSD kernel project
*
* armfpe.h
*
* Details of functions and structures needed for ARM FP cor
* support in RiscBSD
*
* Created : 04/01/96
*/
#ifndef __ARM32_ARM_FPE_H
#define __ARM32_ARM_FPE_H
/************************************ Types ***********************************/
/*
* An extended precision floating point number
*/
typedef struct {
u_int32_t exponent;
u_int32_t mantissa_hi;
u_int32_t mantissa_lo;
} fp_extended_precision_t;
/*
* Type for a saved FP context, if we want to translate the context to a
* user-readable form
*/
typedef struct fp_context_frame {
u_int32_t fpsr;
fp_extended_precision_t regs[8];
} fp_context_frame_t;
/************************************* Module *********************************/
typedef struct {
/*
* Addresses of procedures/functions
*/
u_int32_t core_abort_addr;
u_int32_t core_initws_addr;
u_int32_t core_initcontext_addr;
u_int32_t core_changecontext_addr;
u_int32_t core_shutdown_addr;
u_int32_t core_activatecontext_addr;
u_int32_t core_deactivatecontext_addr;
u_int32_t core_savecontext_addr;
u_int32_t core_loadcontext_addr;
u_int32_t core_disable_addr;
u_int32_t core_enable_addr;
/*
* Addresses of things that need to be filled in by the kernel on startup
*/
u_int32_t *main_ws_ptr_addr;
u_int32_t *local_handler_ptr_addr;
u_int32_t *old_handler_ptr_addr;
u_int32_t *exc_handler_ptr_addr;
u_int32_t *fp_post_proc_addr;
/*
* Numbers that the kernel needs - these are not pointers so do not need to
* be relocated!
*/
u_int32_t WorkspaceLength;
u_int32_t ContextLength;
} arm_fpe_mod_hdr_t;
/**************************** Procedures in arm_fpe.c *************************/
#ifdef _KERNEL
/* macro to return the FP context for a process */
#define FP_CONTEXT(p) ((u_int)(((u_char *)(p)->p_addr) + sizeof(struct user)))
/* Prototypes */
void arm_fpe_mod_reloc __P((void));
int arm_fpe_boot __P((void));
int initialise_arm_fpe __P((cpu_t *cpu));
void arm_fpe_postproc __P((u_int fpframe, struct trapframe *frame));
void arm_fpe_exception __P((int exception, u_int pc, u_int fpframe));
void arm_fpe_core_disable __P((void));
void arm_fpe_core_enable __P((void));
u_int arm_fpe_core_initws __P((u_int workspace, int handler1, int handler2));
u_int arm_fpe_core_abort __P((u_int context, int r12, int pc));
void arm_fpe_core_initcontext __P((u_int context));
u_int arm_fpe_core_changecontext __P((u_int context));
void arm_fpe_core_shutdown __P((void));
void arm_fpe_core_activatecontext __P((u_int context));
u_int arm_fpe_core_deactivatecontext __P((void));
u_int arm_fpe_core_savecontext __P((u_int context, int *savearea, int pc));
void arm_fpe_core_loadcontext __P((u_int context, int *loadarea));
void arm_fpe_copycontext __P((u_int c1, u_int c2));
#endif
#endif
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