129 lines
3.7 KiB
C
129 lines
3.7 KiB
C
/* $NetBSD: frame.h,v 1.5 2001/01/22 22:10:46 bjh21 Exp $ */
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/*
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* Copyright (c) 1999 Ben Harris.
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* Copyright (c) 1994-1997 Mark Brinicombe.
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* Copyright (c) 1994 Brini.
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* All rights reserved.
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*
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* This code is derived from software written for Brini by Mark Brinicombe
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Brini.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* frame.h - Stack frames structures
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*/
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#ifndef _ARM26_FRAME_H_
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#define _ARM26_FRAME_H_
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#include <arm/frame.h>
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#ifndef _LOCORE
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#include <arm/armreg.h>
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/*
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* System stack frames.
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*/
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/*
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* irqframes just contain registers that APCS specifies the callee
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* need not preserve.
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*/
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typedef struct irqframe {
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union {
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struct {
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register_t if_r0;
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register_t if_r1;
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register_t if_r2;
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register_t if_r3;
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register_t if_r12;
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register_t if_r14;
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} svc;
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struct {
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register_t if_r0;
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register_t if_r1;
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register_t if_r2;
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register_t if_r3;
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register_t if_r11;
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register_t if_r12;
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} usr;
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} if_mode;
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register_t if_r15; /* Must be fixed so we know which branch to use */
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} irqframe_t;
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#define clockframe irqframe
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/* All the CLKF_* macros take a struct clockframe * as an argument. */
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/* True if we took the interrupt in user mode */
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#define CLKF_USERMODE(frame) ((frame->if_r15 & R15_MODE) == R15_MODE_USR)
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/* True if we were at spl0 before the interrupt */
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#define CLKF_BASEPRI(frame) 0 /* FIXME */
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/* Extract the program counter from a clockframe */
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#define CLKF_PC(frame) (frame->if_r15 & R15_PC)
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/* True if we took the interrupt from inside another interrupt handler. */
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/* Non-trivial to check because we handle interrupts in SVC mode. */
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#define CLKF_INTR(frame) 0 /* FIXME */
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/*
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* Switch frame
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*/
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struct switchframe {
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register_t sf_r4; /* Callee-saved registers */
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register_t sf_r5;
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register_t sf_r6;
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register_t sf_r7;
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register_t sf_r8;
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register_t sf_r9;
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register_t sf_r10;
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register_t sf_r11; /* Frame pointer */
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register_t sf_r13; /* Stack pointer */
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register_t sf_r14; /* Return address */
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};
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/*
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* Floating-point frame. Stores the state of the FPU.
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*/
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struct fpframe {
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register_t ff_fpsr;
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register_t ff_regs[8*3];
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};
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#endif _LOCORE
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#endif /* _ARM26_FRAME_H_ */
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/* End of frame.h */
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