Annotation of sys/arch/arm/include/pcb.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: pcb.h,v 1.3 2006/05/27 20:36:05 miod Exp $ */
2: /* $NetBSD: pcb.h,v 1.10 2003/10/13 21:46:39 scw Exp $ */
3:
4: /*
5: * Copyright (c) 2001 Matt Thomas <matt@3am-software.com>.
6: * Copyright (c) 1994 Mark Brinicombe.
7: * All rights reserved.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
17: * 3. All advertising materials mentioning features or use of this software
18: * must display the following acknowledgement:
19: * This product includes software developed by the RiscBSD team.
20: * 4. The name "RiscBSD" nor the name of the author may be used to
21: * endorse or promote products derived from this software without specific
22: * prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED
25: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
26: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27: * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
28: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
30: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef _ARM_PCB_H_
38: #define _ARM_PCB_H_
39:
40: #include <machine/frame.h>
41: #include <machine/fp.h>
42:
43: #include <arm/pte.h>
44:
45: struct trapframe;
46:
47: struct pcb_arm32 {
48: paddr_t pcb32_pagedir; /* PT hooks */
49: pd_entry_t *pcb32_pl1vec; /* PTR to vector_base L1 entry*/
50: pd_entry_t pcb32_l1vec; /* Value to stuff on ctx sw */
51: u_int pcb32_dacr; /* Domain Access Control Reg */
52: void *pcb32_cstate; /* &pmap->pm_cstate */
53: /*
54: * WARNING!
55: * cpuswitch.S relies on pcb32_r8 being quad-aligned in struct pcb
56: * (due to the use of "strd" when compiled for XSCALE)
57: */
58: u_int pcb32_r8; /* used */
59: u_int pcb32_r9; /* used */
60: u_int pcb32_r10; /* used */
61: u_int pcb32_r11; /* used */
62: u_int pcb32_r12; /* used */
63: u_int pcb32_sp; /* used */
64: u_int pcb32_lr;
65: u_int pcb32_pc;
66: u_int pcb32_und_sp;
67: };
68: #define pcb_pagedir pcb_un.un_32.pcb32_pagedir
69: #define pcb_pl1vec pcb_un.un_32.pcb32_pl1vec
70: #define pcb_l1vec pcb_un.un_32.pcb32_l1vec
71: #define pcb_dacr pcb_un.un_32.pcb32_dacr
72: #define pcb_cstate pcb_un.un_32.pcb32_cstate
73:
74: struct pcb_arm26 {
75: struct switchframe *pcb26_sf;
76: };
77: #define pcb_sf pcb_un.un_26.pcb26_sf
78:
79: /*
80: * WARNING!
81: * See warning for struct pcb_arm32, above, before changing struct pcb!
82: */
83: struct pcb {
84: u_int pcb_flags;
85: #define PCB_OWNFPU 0x00000001
86: struct trapframe *pcb_tf;
87: caddr_t pcb_onfault; /* On fault handler */
88: union {
89: struct pcb_arm32 un_32;
90: struct pcb_arm26 un_26;
91: } pcb_un;
92: struct fpe_sp_state pcb_fpstate; /* Floating Point state */
93: };
94: #define pcb_ff pcb_fpstate /* for arm26 */
95:
96: /*
97: * No additional data for core dumps.
98: */
99: struct md_coredump {
100: int md_empty;
101: };
102:
103: #ifdef _KERNEL
104: #ifdef MULTIPROCESSOR
105: #define curpcb (curcpu()->ci_curpcb)
106: #else
107: extern struct pcb *curpcb;
108: #endif
109: #endif /* _KERNEL */
110:
111: #endif /* _ARM_PCB_H_ */
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