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Diffstat (limited to 'sys/amd64/include/pcb.h')
| -rw-r--r-- | sys/amd64/include/pcb.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/sys/amd64/include/pcb.h b/sys/amd64/include/pcb.h new file mode 100644 index 0000000..92bd810 --- /dev/null +++ b/sys/amd64/include/pcb.h @@ -0,0 +1,87 @@ +/*- + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * William Jolitz. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)pcb.h 5.10 (Berkeley) 5/12/91 + * + * PATCHES MAGIC LEVEL PATCH THAT GOT US HERE + * -------------------- ----- ---------------------- + * CURRENT PATCH LEVEL: 1 00154 + * -------------------- ----- ---------------------- + * + * 20 Apr 93 Bruce Evans New npx-0.5 code + * + */ + +/* + * Intel 386 process control block + */ +#include "machine/tss.h" +#include "machine/npx.h" + +struct pcb { + struct i386tss pcb_tss; +#define pcb_ksp pcb_tss.tss_esp0 +#define pcb_ptd pcb_tss.tss_cr3 +#define pcb_cr3 pcb_ptd +#define pcb_pc pcb_tss.tss_eip +#define pcb_psl pcb_tss.tss_eflags +#define pcb_usp pcb_tss.tss_esp +#define pcb_fp pcb_tss.tss_ebp +#ifdef notyet + u_char pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */ +#endif + struct save87 pcb_savefpu; /* floating point state for 287/387 */ + struct emcsts pcb_saveemc; /* Cyrix EMC state */ +/* + * Software pcb (extension) + */ + int pcb_flags; +#ifdef notused +#define FP_WASUSED 0x01 /* process has used fltng pnt hardware */ +#define FP_NEEDSSAVE 0x02 /* ... that needs save on next context switch */ +#define FP_NEEDSRESTORE 0x04 /* ... that needs restore on next DNA fault */ +#endif +#define FP_USESEMC 0x08 /* process uses EMC memory-mapped mode */ +#define FM_TRAP 0x10 /* process entered kernel on a trap frame */ +#define FP_SOFTFP 0x20 /* process using software fltng pnt emulator */ + short pcb_iml; /* interrupt mask level */ + caddr_t pcb_onfault; /* copyin/out fault recovery */ + long pcb_sigc[8]; /* XXX signal code trampoline */ + int pcb_cmap2; /* XXX temporary PTE - will prefault instead */ +}; + +#ifdef KERNEL +struct pcb *curpcb; /* our current running pcb */ +#endif |
