e2aceedd5a
kernel from usermode. The remaining user windows are spilled to the pcb as necessary. The user land window fault handlers fill directly from the pcb on return. Add system call entry points. Submitted by: tmm
65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
/*-
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* Copyright (c) 2001 Jake Burkholder.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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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* $FreeBSD$
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*/
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#ifndef _MACHINE_PCB_H_
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#define _MACHINE_PCB_H_
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#include <machine/fp.h>
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#include <machine/frame.h>
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/*
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* XXX: MAXWIN should probably be done dynamically, pcb_wscratch is therefore
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* at the end of the pcb.
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*/
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#define MAXWIN 8
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/* Used in pcb_fcwp to mark the wscratch stack as empty. */
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#define PCB_CWP_EMPTY 0xff
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/* NOTE: pcb_fpstate must be aligned on a 64 byte boundary. */
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struct pcb {
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struct fpstate pcb_fpstate;
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u_long pcb_fp;
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u_long pcb_pc;
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u_long pcb_y;
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caddr_t pcb_onfault;
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u_long pcb_inwinop;
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u_long pcb_cwp;
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u_long pcb_ws_inuse;
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struct wsframe pcb_wscratch[MAXWIN];
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};
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struct md_coredump {
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};
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#ifdef _KERNEL
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int savectx(struct pcb *pcb);
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#endif
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#endif /* !_MACHINE_PCB_H_ */
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