38a01737c1
have f16-f31 as part of the context. The PCB has been reorganized to better match how we save and restore the (preserved) registers. This commit also moves the context restoriation to its own function (named pcb_restore), as we did with pcb_save. Only minimal effort has been put in writing optimal assembly. The expectation is that there will be more rounds of changes.
101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/*-
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* Copyright (c) 2000 Doug Rabson
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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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/*
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* PCB: process control block
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*/
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struct pcb {
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uint64_t pcb_sp;
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uint64_t pcb_ar_unat;
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uint64_t pcb_rp;
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uint64_t pcb_pr;
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struct ia64_fpreg pcb_f[20];
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#define PCB_F2 0
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#define PCB_F3 1
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#define PCB_F4 2
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#define PCB_F5 3
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#define PCB_F16 4
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#define PCB_F17 5
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#define PCB_F18 6
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#define PCB_F19 7
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#define PCB_F20 8
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#define PCB_F21 9
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#define PCB_F22 10
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#define PCB_F23 11
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#define PCB_F24 12
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#define PCB_F25 13
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#define PCB_F26 14
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#define PCB_F27 15
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#define PCB_F28 16
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#define PCB_F29 17
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#define PCB_F30 18
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#define PCB_F31 19
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uint64_t pcb_r[4];
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#define PCB_R4 0
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#define PCB_R5 1
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#define PCB_R6 2
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#define PCB_R7 3
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uint64_t pcb_unat47;
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uint64_t pcb_b[5];
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#define PCB_B1 0
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#define PCB_B2 1
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#define PCB_B3 2
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#define PCB_B4 3
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#define PCB_B5 4
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uint64_t pcb_ar_bsp;
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uint64_t pcb_ar_pfs;
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uint64_t pcb_ar_rnat;
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uint64_t pcb_ar_lc;
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uint64_t pcb_current_pmap;
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uint64_t pcb_ar_fcr;
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uint64_t pcb_ar_eflag;
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uint64_t pcb_ar_csd;
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uint64_t pcb_ar_ssd;
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uint64_t pcb_ar_fsr;
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uint64_t pcb_ar_fir;
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uint64_t pcb_ar_fdr;
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/* Aligned! */
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struct ia64_fpreg pcb_highfp[96]; /* f32-f127 */
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uint64_t pcb_onfault; /* for copy faults */
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uint64_t pcb_accessaddr; /* for [fs]uswintr */
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};
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#ifdef _KERNEL
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void restorectx(struct pcb *);
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void savectx(struct pcb *);
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#endif
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#endif /* _MACHINE_PCB_H_ */
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