1/* $FreeBSD$ */ 2/* $NetBSD: locore.S,v 1.24 2000/05/31 05:09:17 thorpej Exp $ */ 3 4/*- 5 * Copyright (C) 2001 Benno Rice 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 * 17 * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 25 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 26 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28/*- 29 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 30 * Copyright (C) 1995, 1996 TooLs GmbH. 31 * All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 3. All advertising materials mentioning features or use of this software 42 * must display the following acknowledgement: 43 * This product includes software developed by TooLs GmbH. 44 * 4. The name of TooLs GmbH may not be used to endorse or promote products 45 * derived from this software without specific prior written permission. 46 * 47 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 48 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 49 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 50 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 51 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 52 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 53 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 54 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 55 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 56 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 57 */ 58 59#include "assym.s" 60 61#include <sys/syscall.h> 62 63#include <machine/trap.h> 64#include <machine/param.h> 65#include <machine/spr.h> 66#include <machine/asm.h> 67 68#include "opt_kdtrace.h" 69 70/* Locate the per-CPU data structure */ 71#define GET_CPUINFO(r) \ 72 mfsprg0 r 73 74/* 75 * Compiled KERNBASE location and the kernel load address 76 */ 77 .globl kernbase 78 .set kernbase, KERNBASE 79 80#define TMPSTKSZ 16384 /* 16K temporary stack */ 81 82/* 83 * Globals 84 */ 85 .data 86 .align 4 87GLOBAL(tmpstk) 88 .space TMPSTKSZ 89GLOBAL(esym) 90 .llong 0 /* end of symbol table */ 91 92#define INTRCNT_COUNT 256 /* max(HROWPIC_IRQMAX,OPENPIC_IRQMAX) */ 93GLOBAL(intrnames) 94 .space INTRCNT_COUNT * (MAXCOMLEN + 1) * 2 95GLOBAL(sintrnames) 96 .quad INTRCNT_COUNT * (MAXCOMLEN + 1) * 2 97 98 .align 4 99GLOBAL(intrcnt) 100 .space INTRCNT_COUNT * 4 * 2 101GLOBAL(sintrcnt) 102 .quad INTRCNT_COUNT * 4 * 2 103 104 .text 105 .globl btext 106btext: 107 108/* 109 * This symbol is here for the benefit of kvm_mkdb, and is supposed to 110 * mark the start of kernel text. 111 */ 112 .globl kernel_text 113kernel_text: 114 115/* 116 * Startup entry. Note, this must be the first thing in the text 117 * segment! 118 */ 119 .text 120ASENTRY_NOPROF(__start) 121 li 8,0 122 li 9,0x100 123 mtctr 9 1241: 125 dcbf 0,8 126 icbi 0,8 127 addi 8,8,0x20 128 bdnz 1b 129 sync 130 isync 131 132 /* Save the argument pointer and length */ 133 mr 20,6 134 mr 21,7 135 136 lis 8,openfirmware_entry@ha 137 std 5,openfirmware_entry@l(8) /* save client interface handler */ 138 139 /* Set up the stack pointer */ 140 lis 1,(tmpstk+TMPSTKSZ-48)@ha 141 addi 1,1,(tmpstk+TMPSTKSZ-48)@l 142 143 /* Set up the TOC pointer */ 144 lis 2,tocbase@ha 145 ld 2,tocbase@l(2) 146 147 mfmsr 0 148 lis 9,ofmsr@ha 149 stdu 0,ofmsr@l(9) 150 151 mfsprg0 0 /* save SPRG0-3 */ 152 std 0,8(9) /* ofmsr[1] = sprg0 */ 153 mfsprg1 0 154 std 0,16(9) /* ofmsr[2] = sprg1 */ 155 mfsprg2 0 156 std 0,24(9) /* ofmsr[3] = sprg2 */ 157 mfsprg3 0 158 std 0,32(9) /* ofmsr[4] = sprg3 */ 159 160 /* Switch to 64-bit mode */ 161 mfmsr 9 162 li 8,1 163 insrdi 9,8,1,0 164 mtmsrd 9 165 166 bl OF_initial_setup 167 nop 168 169 lis 3,kernbase@ha 170 addi 3,3,kernbase@l 171 172 lis 4,end@ha 173 addi 4,4,end@l 174 add 4,4,3 175 mr 5,4 176 177 /* Restore the argument pointer and length */ 178 mr 6,20 179 mr 7,21 180 181 bl powerpc_init 182 nop 183 mr %r1, %r3 184 li %r3, 0 185 std %r3, 0(%r1) 186 bl mi_startup 187 nop 188 b OF_exit 189 nop 190 191/* 192 * PPC64 ABI TOC base 193 */ 194 195 .align 3 196 .globl tocbase 197tocbase: 198 .llong .TOC.@tocbase 199 200/* 201 * int setfault() 202 * 203 * Similar to setjmp to setup for handling faults on accesses to user memory. 204 * Any routine using this may only call bcopy, either the form below, 205 * or the (currently used) C code optimized, so it doesn't use any non-volatile 206 * registers. 207 */ 208ASENTRY_NOPROF(setfault) 209 mflr 0 210 mfcr 12 211 mfsprg 4,0 212 ld 4,TD_PCB(13) /* curthread = r13 */ 213 std 3,PCB_ONFAULT(4) 214 std 0,0(3) 215 std 1,8(3) 216 std 2,16(3) 217 218 std %r12,24(%r3) /* Save the non-volatile GP regs. */ 219 std %r13,24+1*8(%r3) 220 std %r14,24+2*8(%r3) 221 std %r15,24+3*8(%r3) 222 std %r16,24+4*8(%r3) 223 std %r17,24+5*8(%r3) 224 std %r18,24+6*8(%r3) 225 std %r19,24+7*8(%r3) 226 std %r20,24+8*8(%r3) 227 std %r21,24+9*8(%r3) 228 std %r22,24+10*8(%r3) 229 std %r23,24+11*8(%r3) 230 std %r24,24+12*8(%r3) 231 std %r25,24+13*8(%r3) 232 std %r26,24+14*8(%r3) 233 std %r27,24+15*8(%r3) 234 std %r28,24+16*8(%r3) 235 std %r29,24+17*8(%r3) 236 std %r30,24+18*8(%r3) 237 std %r31,24+19*8(%r3) 238 239 xor 3,3,3 240 blr 241 242#include <powerpc/aim/trap_subr64.S> 243