1 /* $OpenBSD: pcb.h,v 1.6 2024/10/15 09:16:39 jsg 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 #include <machine/reg.h> 22 23 struct trapframe; 24 25 /* 26 * Warning certain fields must be within 256 bytes of the beginning 27 * of this structure. 28 */ 29 struct pcb { 30 u_int pcb_flags; 31 #define PCB_FPU 0x00000001 /* Process had FPU initialized */ 32 #define PCB_SINGLESTEP 0x00000002 /* Single step process */ 33 struct trapframe *pcb_tf; 34 35 register_t pcb_sp; // stack pointer of switchframe 36 37 caddr_t pcb_onfault; // On fault handler 38 struct fpreg pcb_fpstate; // Floating Point state */ 39 40 void *pcb_tcb; 41 }; 42 #endif /* _MACHINE_PCB_H_ */ 43