1 /* $NetBSD: asm.h,v 1.19 2006/01/20 22:02:40 christos Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 5 * Copyright (C) 1995, 1996 TooLs GmbH. 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 TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #ifndef _PPC_ASM_H_ 35 #define _PPC_ASM_H_ 36 37 #ifdef PIC 38 #define PIC_PROLOGUE XXX 39 #define PIC_EPILOGUE XXX 40 #define PIC_PLT(x) x@plt 41 #ifdef __STDC__ 42 #define PIC_GOT(x) XXX 43 #define PIC_GOTOFF(x) XXX 44 #else /* not __STDC__ */ 45 #define PIC_GOT(x) XXX 46 #define PIC_GOTOFF(x) XXX 47 #endif /* __STDC__ */ 48 #else 49 #define PIC_PROLOGUE 50 #define PIC_EPILOGUE 51 #define PIC_PLT(x) x 52 #define PIC_GOT(x) x 53 #define PIC_GOTOFF(x) x 54 #endif 55 56 #define _C_LABEL(x) x 57 #define _ASM_LABEL(x) x 58 59 #define _GLOBAL(x) \ 60 .data; .align 2; .globl x; x: 61 62 #define _ENTRY(x) \ 63 .text; .align 2; .globl x; .type x,@function; x: 64 65 #ifdef GPROF 66 # define _PROF_PROLOGUE mflr 0; stw 0,4(1); bl _mcount 67 #else 68 # define _PROF_PROLOGUE 69 #endif 70 71 #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 72 #define ENTRY_NOPROFILE(y) _ENTRY(_C_LABEL(y)) 73 74 #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 75 #define GLOBAL(y) _GLOBAL(_C_LABEL(y)) 76 77 #define ASMSTR .asciz 78 79 #define RCSID(x) .text; .asciz x 80 81 #ifdef __ELF__ 82 #define WEAK_ALIAS(alias,sym) \ 83 .weak alias; \ 84 alias = sym 85 #endif 86 /* 87 * STRONG_ALIAS: create a strong alias. 88 */ 89 #define STRONG_ALIAS(alias,sym) \ 90 .globl alias; \ 91 alias = sym 92 93 #ifdef __STDC__ 94 #define WARN_REFERENCES(_sym,_msg) \ 95 .section .gnu.warning. ## _sym ; .ascii _msg ; .text 96 #else 97 #define WARN_REFERENCES(_sym,_msg) \ 98 .section .gnu.warning./**/_sym ; .ascii _msg ; .text 99 #endif /* __STDC__ */ 100 101 #ifdef _KERNEL 102 /* 103 * Get cpu_info pointer for current processor. Always in SPRG0. *ALWAYS* 104 */ 105 #define GET_CPUINFO(r) mfsprg r,0 106 /* 107 * IN: 108 * R4[er] = first free byte beyond end/esym. 109 * 110 * OUT: 111 * R1[sp] = new kernel stack 112 * R4[er] = kernelend 113 */ 114 115 #define INIT_CPUINFO(er,sp,tmp1,tmp2) \ 116 li tmp1,PGOFSET; \ 117 add er,er,tmp1; \ 118 andc er,er,tmp1; /* page align */ \ 119 lis tmp1,_C_LABEL(cpu_info)@ha; \ 120 addi tmp1,tmp1,_C_LABEL(cpu_info)@l; \ 121 mtsprg0 tmp1; /* save for later use */ \ 122 addi er,er,INTSTK; \ 123 stptr er,CI_INTSTK(tmp1); \ 124 stptr er,CI_IDLE_PCB(tmp1); \ 125 addi er,er,USPACE; /* space for idle_u */ \ 126 lis tmp2,_C_LABEL(emptyidlespin)@h; \ 127 ori tmp2,tmp2,_C_LABEL(emptyidlespin)@l; \ 128 stptr tmp2,CI_IDLESPIN(tmp1); \ 129 li tmp2,-1; \ 130 stint tmp2,CI_INTRDEPTH(tmp1); \ 131 li tmp2,0; \ 132 stptr tmp2,-CALLFRAMELEN(er); /* terminate idle stack chain */\ 133 lis tmp1,_C_LABEL(proc0paddr)@ha; \ 134 stptr er,_C_LABEL(proc0paddr)@l(tmp1); \ 135 addi er,er,USPACE; /* stackpointer for proc0 */ \ 136 addi sp,er,-FRAMELEN; /* stackpointer for proc0 */ \ 137 /* er = end of mem reserved for kernel */ \ 138 stptru tmp2,-CALLFRAMELEN(sp) /* end of stack chain */ 139 140 #endif 141 142 /* Condition Register Bit Fields */ 143 144 #if !defined(_NOREGNAMES) 145 #if defined(_KERNEL) || defined(_STANDALONE) 146 #define cr0 0 147 #define cr1 1 148 #define cr2 2 149 #define cr3 3 150 #define cr4 4 151 #define cr5 5 152 #define cr6 6 153 #define cr7 7 154 #endif 155 156 /* General Purpose Registers (GPRs) */ 157 158 #if defined(_KERNEL) || defined(_STANDALONE) 159 #define r0 0 160 #define r1 1 161 #define r2 2 162 #define r3 3 163 #define r4 4 164 #define r5 5 165 #define r6 6 166 #define r7 7 167 #define r8 8 168 #define r9 9 169 #define r10 10 170 #define r11 11 171 #define r12 12 172 #define r13 13 173 #define r14 14 174 #define r15 15 175 #define r16 16 176 #define r17 17 177 #define r18 18 178 #define r19 19 179 #define r20 20 180 #define r21 21 181 #define r22 22 182 #define r23 23 183 #define r24 24 184 #define r25 25 185 #define r26 26 186 #define r27 27 187 #define r28 28 188 #define r29 29 189 #define r30 30 190 #define r31 31 191 #endif 192 193 /* Floating Point Registers (FPRs) */ 194 195 #if defined(_KERNEL) || defined(_STANDALONE) 196 #define fr0 0 197 #define fr1 1 198 #define fr2 2 199 #define fr3 3 200 #define fr4 4 201 #define fr5 5 202 #define fr6 6 203 #define fr7 7 204 #define fr8 8 205 #define fr9 9 206 #define fr10 10 207 #define fr11 11 208 #define fr12 12 209 #define fr13 13 210 #define fr14 14 211 #define fr15 15 212 #define fr16 16 213 #define fr17 17 214 #define fr18 18 215 #define fr19 19 216 #define fr20 20 217 #define fr21 21 218 #define fr22 22 219 #define fr23 23 220 #define fr24 24 221 #define fr25 25 222 #define fr26 26 223 #define fr27 27 224 #define fr28 28 225 #define fr29 29 226 #define fr30 30 227 #define fr31 31 228 #endif 229 #endif /* !_NOREGNAMES */ 230 231 /* 232 * Add some psuedo instructions to made sharing of assembly versions of 233 * ILP32 and LP64 code possible. 234 */ 235 #define ldint lwz /* not needed but for completeness */ 236 #define ldintu lwzu /* not needed but for completeness */ 237 #define stint stw /* not needed but for completeness */ 238 #define stintu stwu /* not needed but for completeness */ 239 #ifndef _LP64 240 #define ldlong lwz /* load "C" long */ 241 #define ldlongu lwzu /* load "C" long with udpate */ 242 #define stlong stw /* load "C" long */ 243 #define stlongu stwu /* load "C" long with udpate */ 244 #define ldptr lwz /* load "C" pointer */ 245 #define ldptru lwzu /* load "C" pointer with udpate */ 246 #define stptr stw /* load "C" pointer */ 247 #define stptru stwu /* load "C" pointer with udpate */ 248 #define ldreg lwz /* load PPC general register */ 249 #define ldregu lwzu /* load PPC general register with udpate */ 250 #define streg stw /* load PPC general register */ 251 #define stregu stwu /* load PPC general register with udpate */ 252 #define SZREG 4 /* 4 byte registers */ 253 #else 254 #define ldlong ld /* load "C" long */ 255 #define ldlongu ldu /* load "C" long with update */ 256 #define stlong std /* store "C" long */ 257 #define stlongu stdu /* store "C" long with update */ 258 #define ldptr ld /* load "C" pointer */ 259 #define ldptru ldu /* load "C" pointer with update */ 260 #define stptr std /* store "C" pointer */ 261 #define stptru stdu /* store "C" pointer with update */ 262 #define ldreg ld /* load PPC general register */ 263 #define ldregu ldu /* load PPC general register with update */ 264 #define streg std /* store PPC general register */ 265 #define stregu stdu /* store PPC general register with update */ 266 /* redefined this to force an error on PPC64 to catch their use. */ 267 #define lmw lmd /* load multiple PPC general registers */ 268 #define stmw stmd /* store multiple PPC general registers */ 269 #define SZREG 8 /* 8 byte registers */ 270 #endif 271 272 #endif /* !_PPC_ASM_H_ */ 273