1 /* $OpenBSD: pcb.h,v 1.3 2021/06/30 22:20:56 kettenis Exp $ */ 2 3 /* 4 * Copyright (c) 2016 Dale Rahn <drahn@dalerahn.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 #ifndef _MACHINE_PCB_H_ 19 #define _MACHINE_PCB_H_ 20 21 #include <machine/frame.h> 22 23 #include <machine/pte.h> 24 #include <machine/reg.h> 25 26 struct trapframe; 27 28 /* 29 * Warning certain fields must be within 256 bytes of the beginning 30 * of this structure. 31 */ 32 struct pcb { 33 u_int pcb_flags; 34 #define PCB_FPU 0x00000001 /* Process had FPU initialized */ 35 #define PCB_SINGLESTEP 0x00000002 /* Single step process */ 36 struct trapframe *pcb_tf; 37 38 register_t pcb_sp; // stack pointer of switchframe 39 40 caddr_t pcb_onfault; // On fault handler 41 struct fpreg pcb_fpstate; // Floating Point state */ 42 }; 43 #endif /* _MACHINE_PCB_H_ */ 44