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root/bsp/hal/ppc/include/context.h/* [<][>][^][v][top][bottom][index][help] */INCLUDED FROM1 /*- 2 * Copyright (c) 2009, Kohsuke Ohtani 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the author nor the names of any co-contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef _PPC_CONTEXT_H 31 #define _PPC_CONTEXT_H 32 33 #ifndef __ASSEMBLY__ 34 35 #include <sys/types.h> 36 37 /* 38 * Common register frame for trap/interrupt. 39 * These cpu state are saved into top of the kernel stack in 40 * trap/interrupt entries. Since the arguments of system calls are 41 * passed via registers, the system call library is completely 42 * dependent on this register format. 43 */ 44 struct cpu_regs { 45 uint32_t gr[32]; /* R0-R31 */ 46 uint32_t lr; 47 uint32_t cr; 48 uint32_t xer; 49 uint32_t ctr; 50 uint32_t srr0; 51 uint32_t srr1; 52 uint32_t trap_no; /* trap number */ 53 }; 54 55 /* 56 * Kernel mode context for context switching. 57 */ 58 struct kern_regs { 59 uint32_t gr[19]; /* R13-R31 */ 60 uint32_t r2; 61 uint32_t sp; 62 uint32_t lr; 63 uint32_t cr; 64 uint32_t kstack; /* kernel stack */ 65 }; 66 67 /* 68 * Processor context 69 */ 70 struct context { 71 struct kern_regs kregs; /* kernel mode registers */ 72 struct cpu_regs *uregs; /* user mode registers */ 73 struct cpu_regs *saved_regs; /* saved user mode registers */ 74 }; 75 76 typedef struct context *context_t; /* context id */ 77 78 #endif /* !__ASSEMBLY__ */ 79 80 #define REG_R0 0x00 81 #define REG_R1 0x04 82 #define REG_R2 0x08 83 #define REG_R3 0x0c 84 #define REG_R4 0x10 85 #define REG_R5 0x14 86 #define REG_R6 0x18 87 #define REG_R7 0x1c 88 #define REG_R8 0x20 89 #define REG_R9 0x24 90 #define REG_R10 0x28 91 #define REG_R11 0x2c 92 #define REG_R12 0x30 93 #define REG_R13 0x34 94 #define REG_R14 0x38 95 #define REG_R15 0x3c 96 #define REG_R16 0x40 97 #define REG_R17 0x44 98 #define REG_R18 0x48 99 #define REG_R19 0x4c 100 #define REG_R20 0x50 101 #define REG_R21 0x54 102 #define REG_R22 0x58 103 #define REG_R23 0x5c 104 #define REG_R24 0x60 105 #define REG_R25 0x64 106 #define REG_R26 0x68 107 #define REG_R27 0x6c 108 #define REG_R28 0x70 109 #define REG_R29 0x74 110 #define REG_R30 0x78 111 #define REG_R31 0x7c 112 #define REG_LR 0x80 113 #define REG_CR 0x84 114 #define REG_XER 0x88 115 #define REG_CTR 0x8c 116 #define REG_SRR0 0x90 117 #define REG_SRR1 0x94 118 #define CTX_TRAPNO 0x98 119 120 #define CTXREGS (4*39) 121 122 #endif /* !_PPC_CONTEXT_H */ /* [<][>][^][v][top][bottom][index][help] */ | |||
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Copyright© 2005-2009 Kohsuke Ohtani |
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