1 /* $OpenBSD: pcb.h,v 1.4 2018/07/04 17:52:29 drahn Exp $ */ 2 /* 3 * Copyright (c) 2016 Dale Rahn <drahn@dalerahn.com> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 #ifndef _MACHINE_PCB_H_ 18 #define _MACHINE_PCB_H_ 19 20 #include <machine/frame.h> 21 22 #include <machine/pte.h> 23 #include <machine/reg.h> 24 25 struct trapframe; 26 27 /* 28 * Warning certain fields must be within 256 bytes of the beginning 29 * of this structure. 30 */ 31 struct pcb { 32 u_int pcb_flags; 33 #define PCB_FPU 0x00000001 /* Process had FPU initialized */ 34 #define PCB_SINGLESTEP 0x00000002 /* Single step process */ 35 struct trapframe *pcb_tf; 36 37 register_t pcb_sp; // stack pointer of switchframe 38 39 caddr_t pcb_onfault; // On fault handler 40 struct fpreg pcb_fpstate; // Floating Point state */ 41 struct cpu_info *pcb_fpcpu; 42 43 void *pcb_tcb; 44 }; 45 #endif /* _MACHINE_PCB_H_ */ 46