60ead00ef8
trap.c to frame.h - Use the macros in vm_machdep.c:cpu_fork() to set up the trap frame of the new thread.
145 lines
4.3 KiB
C
145 lines
4.3 KiB
C
/*
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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* All rights reserved.
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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 TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $NetBSD: frame.h,v 1.2 1999/01/10 10:13:15 tsubai Exp $
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* $FreeBSD$
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*/
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#ifndef _MACHINE_FRAME_H_
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#define _MACHINE_FRAME_H_
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#include <machine/types.h>
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/*
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* We have to save all registers on every trap, because
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* 1. user could attach this process every time
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* 2. we must be able to restore all user registers in case of fork
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* Actually, we do not save the fp registers on trap, since
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* these are not used by the kernel. They are saved only when switching
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* between processes using the FPU.
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*
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* Change ordering to cluster together these register_t's. XXX
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*/
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struct trapframe {
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register_t fixreg[32];
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register_t lr;
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int cr;
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int xer;
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register_t ctr;
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register_t srr0;
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register_t srr1;
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register_t dar; /* dar & dsisr are only filled on a DSI trap */
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int dsisr;
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int exc;
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};
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/*
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* This is to ensure alignment of the stackpointer
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*/
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#define FRAMELEN roundup(sizeof(struct trapframe) + 8, 16)
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#define trapframe(td) ((td)->td_frame)
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struct switchframe {
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register_t sp;
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register_t fill;
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register_t user_sr;
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register_t cr;
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register_t fixreg2;
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register_t fixreg[19]; /* R13-R31 */
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};
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struct clockframe {
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register_t srr1;
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register_t srr0;
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int pri;
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int depth;
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};
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/*
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* Call frame for PowerPC used during fork.
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*/
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struct callframe {
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register_t cf_func;
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register_t cf_arg0;
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register_t cf_arg1;
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};
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#define IFRAMELEN sizeof(struct intrframe)
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struct intrframe {
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register_t r1; /* 0 */
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register_t _pad4; /* 4 */
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/*
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* The next 4 fields are "clockframe"
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*/
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register_t srr1; /* 8 */
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register_t srr0; /* 12 */
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int pri; /* 16 */
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int intr_depth; /* 20 */
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register_t vrsave; /* 24 */
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register_t ctr; /* 28 */
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register_t xer; /* 32 */
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register_t cr; /* 36 */
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register_t lr; /* 40 */
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register_t r12; /* 44 */
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register_t r11; /* 48 */
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register_t r10; /* 52 */
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register_t r9; /* 56 */
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register_t r8; /* 60 */
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register_t r7; /* 64 */
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register_t r6; /* 68 */
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register_t r5; /* 72 */
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register_t r4; /* 76 */
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register_t r3; /* 80 */
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register_t r0; /* 84 */
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};
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#define SPFRAMELEN sizeof(struct spillframe)
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struct spillframe {
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register_t r1; /* 0 */
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register_t _pad4; /* 4 */
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register_t r12; /* 8 */
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register_t r11; /* 12 */
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register_t r10; /* 16 */
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register_t r9; /* 20 */
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register_t r8; /* 24 */
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register_t r7; /* 28 */
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register_t r6; /* 32 */
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register_t r5; /* 36 */
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register_t r4; /* 40 */
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register_t r3; /* 44 */
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register_t r0; /* 48 */
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};
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/* Definitions for syscalls */
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#define FIRSTARG 3 /* first arg in reg 3 */
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#define NARGREG 8 /* 8 args in regs */
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#define MOREARGS(sp) ((caddr_t)((int)(sp) + 8)) /* more args go here */
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#endif /* _MACHINE_FRAME_H_ */
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