1 /* pcb.h,v 1.14.22.2 2007/11/06 23:15:05 matt Exp */ 2 3 /* 4 * Copyright (c) 2001 Matt Thomas <matt@3am-software.com>. 5 * Copyright (c) 1994 Mark Brinicombe. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the RiscBSD team. 19 * 4. The name "RiscBSD" nor the name of the author may be used to 20 * endorse or promote products derived from this software without specific 21 * prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef _ARM_PCB_H_ 37 #define _ARM_PCB_H_ 38 39 #include <machine/frame.h> 40 41 #include <arm/arm32/pte.h> 42 #include <arm/reg.h> 43 44 struct pcb_arm32 { 45 /* 46 * WARNING! 47 * cpuswitchto.S relies on pcb32_r8 being quad-aligned in struct pcb 48 * (due to the use of "strd" when compiled for XSCALE) 49 */ 50 u_int pcb32_r8 __aligned(8); /* used */ 51 u_int pcb32_r9; /* used */ 52 u_int pcb32_r10; /* used */ 53 u_int pcb32_r11; /* used */ 54 u_int pcb32_r12; /* used */ 55 u_int pcb32_sp; /* used */ 56 u_int pcb32_lr; 57 u_int pcb32_pc; 58 59 /* 60 * ARMv6 has two user thread/process id registers which can hold 61 * any 32bit quanttiies. 62 */ 63 u_int pcb32_user_pid_rw; /* p15, 0, Rd, c13, c0, 2 */ 64 u_int pcb32_user_pid_ro; /* p15, 0, Rd, c13, c0, 3 */ 65 }; 66 #define pcb_pagedir pcb_un.un_32.pcb32_pagedir 67 #define pcb_pl1vec pcb_un.un_32.pcb32_pl1vec 68 #define pcb_l1vec pcb_un.un_32.pcb32_l1vec 69 #define pcb_dacr pcb_un.un_32.pcb32_dacr 70 #define pcb_cstate pcb_un.un_32.pcb32_cstate 71 #define pcb_user_pid_rw pcb_un.un_32.pcb32_user_pid_rw 72 #ifdef __PROG32 73 #define pcb_ksp pcb_un.un_32.pcb32_sp 74 #endif 75 76 struct pcb_arm26 { 77 struct switchframe *pcb26_sf; 78 }; 79 #define pcb_sf pcb_un.un_26.pcb26_sf 80 #ifdef __PROG26 81 #define pcb_ksp pcb_sf.sf_r13 82 #endif 83 84 /* 85 * WARNING! 86 * See warning for struct pcb_arm32, above, before changing struct pcb! 87 */ 88 struct pcb { 89 union { 90 struct pcb_arm32 un_32; 91 struct pcb_arm26 un_26; 92 } pcb_un; 93 void * pcb_onfault; /* On fault handler */ 94 struct vfpreg pcb_vfp; /* VFP registers */ 95 struct vfpreg pcb_kernel_vfp; /* kernel VFP state */ 96 }; 97 98 /* 99 * No additional data for core dumps. 100 */ 101 struct md_coredump { 102 int md_empty; 103 }; 104 105 #endif /* _ARM_PCB_H_ */ 106