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cb67f0018f
to determine if a process is using floating point. in order to avoid sign extending a 13 bit immediate. 2. We don't need to context switch cwp anymore, it is better to just fiddle the save tstate on return from traps. See exception.s 1.10 and 1.12. 3. Completely remove pcb_cwp. 4. Implement vmapbuf, vunmapbuf and vm_fault_quick. Completely remove TODOs from vm_machdep.c (yay!). Submitted by: tmm (1, 3, 4) Obtained from: existing archs (4)
57 lines
1.8 KiB
C
57 lines
1.8 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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#define MAXWIN 8
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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_nsaved;
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u_long pcb_rwsp[MAXWIN];
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struct rwindow pcb_rw[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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