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 #include <machine/fp.h> 41 42 #include <arm/arm32/pte.h> 43 #include <arm/reg.h> 44 45 struct trapframe; 46 47 struct pcb_arm32 { 48 /* 49 * WARNING! 50 * cpuswitch.S relies on pcb32_r8 being quad-aligned in struct pcb 51 * (due to the use of "strd" when compiled for XSCALE) 52 */ 53 u_int pcb32_r8 __aligned(8); /* used */ 54 u_int pcb32_r9; /* used */ 55 u_int pcb32_r10; /* used */ 56 u_int pcb32_r11; /* used */ 57 u_int pcb32_r12; /* used */ 58 u_int pcb32_sp; /* used */ 59 u_int pcb32_lr; 60 u_int pcb32_pc; 61 62 /* 63 * ARMv6 has two user thread/process id registers which can hold 64 * any 32bit quanttiies. 65 */ 66 u_int pcb32_user_pid_rw; /* p15, 0, Rd, c13, c0, 2 */ 67 u_int pcb32_user_pid_ro; /* p15, 0, Rd, c13, c0, 3 */ 68 }; 69 #define pcb_pagedir pcb_un.un_32.pcb32_pagedir 70 #define pcb_pl1vec pcb_un.un_32.pcb32_pl1vec 71 #define pcb_l1vec pcb_un.un_32.pcb32_l1vec 72 #define pcb_dacr pcb_un.un_32.pcb32_dacr 73 #define pcb_cstate pcb_un.un_32.pcb32_cstate 74 75 struct pcb_arm26 { 76 struct switchframe *pcb26_sf; 77 }; 78 #define pcb_sf pcb_un.un_26.pcb26_sf 79 80 /* 81 * WARNING! 82 * See warning for struct pcb_arm32, above, before changing struct pcb! 83 */ 84 struct pcb { 85 u_int pcb_flags; 86 #define PCB_OWNFPU 0x00000001 87 #define PCB_NOALIGNFLT 0x00000002 /* For EXEC_AOUT */ 88 struct trapframe *pcb_tf; 89 void * pcb_onfault; /* On fault handler */ 90 union { 91 struct pcb_arm32 un_32; 92 struct pcb_arm26 un_26; 93 } pcb_un; 94 struct fpe_sp_state pcb_fpstate; /* FPA Floating Point state */ 95 struct vfpreg pcb_vfp; /* VFP registers */ 96 struct cpu_info *pcb_vfpcpu; /* CPU holding VFP state */ 97 }; 98 #define pcb_ff pcb_fpstate /* for arm26 */ 99 100 /* 101 * No additional data for core dumps. 102 */ 103 struct md_coredump { 104 int md_empty; 105 }; 106 107 #ifdef _KERNEL 108 #ifdef _KERNEL_OPT 109 #include "opt_multiprocessor.h" 110 #endif 111 #ifdef MULTIPROCESSOR 112 #define curpcb (curcpu()->ci_curpcb) 113 #else 114 extern struct pcb *curpcb; 115 #endif 116 #endif /* _KERNEL */ 117 118 #endif /* _ARM_PCB_H_ */ 119