1 /* $OpenBSD: pcb.h,v 1.4 2024/10/15 09:16:39 jsg 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 #include <machine/reg.h> 23 24 struct trapframe; 25 26 /* 27 * Warning certain fields must be within 256 bytes of the beginning 28 * of this structure. 29 */ 30 struct pcb { 31 u_int pcb_flags; 32 #define PCB_FPU 0x00000001 /* Process had FPU initialized */ 33 #define PCB_SINGLESTEP 0x00000002 /* Single step process */ 34 struct trapframe *pcb_tf; 35 36 register_t pcb_sp; // stack pointer of switchframe 37 38 caddr_t pcb_onfault; // On fault handler 39 struct fpreg pcb_fpstate; // Floating Point state */ 40 }; 41 #endif /* _MACHINE_PCB_H_ */ 42