asm.h revision 1.20
1 /* $NetBSD: asm.h,v 1.20 2006/07/01 20:34:49 ross 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 #ifdef GPROF 63 # define _PROF_PROLOGUE mflr 0; stw 0,4(1); bl _mcount 64 #else 65 # define _PROF_PROLOGUE 66 #endif 67 68 #ifdef _LP64 69 70 #define SF_HEADER_SZ 48 71 #define SF_PARAM_SZ 64 72 #define SF_SZ (F_HEADER_SZ + F_PARAM_SZ) 73 74 #define SF_SP 0 75 #define SF_CR 8 76 #define SF_LR 16 77 #define SF_PARAM SF_HEADER_SZ 78 79 #define ENTRY(y) \ 80 .globl y; \ 81 .section ".opd","aw"; \ 82 .align 3; \ 83 y: .quad .y,.TOC.@tocbase,0; \ 84 .previous; \ 85 .size y,24; \ 86 .type .y,@function; \ 87 .globl .y; \ 88 .y: 89 #define CALL(y) \ 90 bl y; \ 91 nop 92 93 #define ENTRY_NOPROFILE(y) ENTRY(y) 94 #define ASENTRY(y) ENTRY(y) 95 #else 96 97 #define _ENTRY(x) \ 98 .text; .align 2; .globl x; .type x,@function; x: 99 100 #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 101 102 #define ENTRY_NOPROFILE(y) _ENTRY(_C_LABEL(y)) 103 104 #define CALL(y) \ 105 bl y 106 107 #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 108 #endif 109 110 #define GLOBAL(y) _GLOBAL(_C_LABEL(y)) 111 112 #define ASMSTR .asciz 113 114 #define RCSID(x) .text; .asciz x 115 116 #ifdef __ELF__ 117 #define WEAK_ALIAS(alias,sym) \ 118 .weak alias; \ 119 alias = sym 120 #endif 121 /* 122 * STRONG_ALIAS: create a strong alias. 123 */ 124 #define STRONG_ALIAS(alias,sym) \ 125 .globl alias; \ 126 alias = sym 127 128 #ifdef __STDC__ 129 #define WARN_REFERENCES(_sym,_msg) \ 130 .section .gnu.warning. ## _sym ; .ascii _msg ; .text 131 #else 132 #define WARN_REFERENCES(_sym,_msg) \ 133 .section .gnu.warning./**/_sym ; .ascii _msg ; .text 134 #endif /* __STDC__ */ 135 136 #ifdef _KERNEL 137 /* 138 * Get cpu_info pointer for current processor. Always in SPRG0. *ALWAYS* 139 */ 140 #define GET_CPUINFO(r) mfsprg r,0 141 /* 142 * IN: 143 * R4[er] = first free byte beyond end/esym. 144 * 145 * OUT: 146 * R1[sp] = new kernel stack 147 * R4[er] = kernelend 148 */ 149 150 #define INIT_CPUINFO(er,sp,tmp1,tmp2) \ 151 li tmp1,PGOFSET; \ 152 add er,er,tmp1; \ 153 andc er,er,tmp1; /* page align */ \ 154 lis tmp1,_C_LABEL(cpu_info)@ha; \ 155 addi tmp1,tmp1,_C_LABEL(cpu_info)@l; \ 156 mtsprg0 tmp1; /* save for later use */ \ 157 addi er,er,INTSTK; \ 158 stptr er,CI_INTSTK(tmp1); \ 159 stptr er,CI_IDLE_PCB(tmp1); \ 160 addi er,er,USPACE; /* space for idle_u */ \ 161 lis tmp2,_C_LABEL(emptyidlespin)@h; \ 162 ori tmp2,tmp2,_C_LABEL(emptyidlespin)@l; \ 163 stptr tmp2,CI_IDLESPIN(tmp1); \ 164 li tmp2,-1; \ 165 stint tmp2,CI_INTRDEPTH(tmp1); \ 166 li tmp2,0; \ 167 stptr tmp2,-CALLFRAMELEN(er); /* terminate idle stack chain */\ 168 lis tmp1,_C_LABEL(proc0paddr)@ha; \ 169 stptr er,_C_LABEL(proc0paddr)@l(tmp1); \ 170 addi er,er,USPACE; /* stackpointer for proc0 */ \ 171 addi sp,er,-FRAMELEN; /* stackpointer for proc0 */ \ 172 /* er = end of mem reserved for kernel */ \ 173 stptru tmp2,-CALLFRAMELEN(sp) /* end of stack chain */ 174 175 #endif 176 177 /* Condition Register Bit Fields */ 178 179 #if !defined(_NOREGNAMES) 180 #if defined(_KERNEL) || defined(_STANDALONE) 181 #define cr0 0 182 #define cr1 1 183 #define cr2 2 184 #define cr3 3 185 #define cr4 4 186 #define cr5 5 187 #define cr6 6 188 #define cr7 7 189 #endif 190 191 /* General Purpose Registers (GPRs) */ 192 193 #if defined(_KERNEL) || defined(_STANDALONE) 194 #define r0 0 195 #define r1 1 196 #define r2 2 197 #define r3 3 198 #define r4 4 199 #define r5 5 200 #define r6 6 201 #define r7 7 202 #define r8 8 203 #define r9 9 204 #define r10 10 205 #define r11 11 206 #define r12 12 207 #define r13 13 208 #define r14 14 209 #define r15 15 210 #define r16 16 211 #define r17 17 212 #define r18 18 213 #define r19 19 214 #define r20 20 215 #define r21 21 216 #define r22 22 217 #define r23 23 218 #define r24 24 219 #define r25 25 220 #define r26 26 221 #define r27 27 222 #define r28 28 223 #define r29 29 224 #define r30 30 225 #define r31 31 226 #endif 227 228 /* Floating Point Registers (FPRs) */ 229 230 #if defined(_KERNEL) || defined(_STANDALONE) 231 #define fr0 0 232 #define fr1 1 233 #define fr2 2 234 #define fr3 3 235 #define fr4 4 236 #define fr5 5 237 #define fr6 6 238 #define fr7 7 239 #define fr8 8 240 #define fr9 9 241 #define fr10 10 242 #define fr11 11 243 #define fr12 12 244 #define fr13 13 245 #define fr14 14 246 #define fr15 15 247 #define fr16 16 248 #define fr17 17 249 #define fr18 18 250 #define fr19 19 251 #define fr20 20 252 #define fr21 21 253 #define fr22 22 254 #define fr23 23 255 #define fr24 24 256 #define fr25 25 257 #define fr26 26 258 #define fr27 27 259 #define fr28 28 260 #define fr29 29 261 #define fr30 30 262 #define fr31 31 263 #endif 264 #endif /* !_NOREGNAMES */ 265 266 /* 267 * Add some psuedo instructions to made sharing of assembly versions of 268 * ILP32 and LP64 code possible. 269 */ 270 #define ldint lwz /* not needed but for completeness */ 271 #define ldintu lwzu /* not needed but for completeness */ 272 #define stint stw /* not needed but for completeness */ 273 #define stintu stwu /* not needed but for completeness */ 274 275 #ifndef _LP64 276 277 #define ldlong lwz /* load "C" long */ 278 #define ldlongu lwzu /* load "C" long with udpate */ 279 #define stlong stw /* load "C" long */ 280 #define stlongu stwu /* load "C" long with udpate */ 281 #define ldptr lwz /* load "C" pointer */ 282 #define ldptru lwzu /* load "C" pointer with udpate */ 283 #define stptr stw /* load "C" pointer */ 284 #define stptru stwu /* load "C" pointer with udpate */ 285 #define ldreg lwz /* load PPC general register */ 286 #define ldregu lwzu /* load PPC general register with udpate */ 287 #define streg stw /* load PPC general register */ 288 #define stregu stwu /* load PPC general register with udpate */ 289 #define SZREG 4 /* 4 byte registers */ 290 291 #else 292 293 #define ldlong ld /* load "C" long */ 294 #define ldlongu ldu /* load "C" long with update */ 295 #define stlong std /* store "C" long */ 296 #define stlongu stdu /* store "C" long with update */ 297 #define ldptr ld /* load "C" pointer */ 298 #define ldptru ldu /* load "C" pointer with update */ 299 #define stptr std /* store "C" pointer */ 300 #define stptru stdu /* store "C" pointer with update */ 301 #define ldreg ld /* load PPC general register */ 302 #define ldregu ldu /* load PPC general register with update */ 303 #define streg std /* store PPC general register */ 304 #define stregu stdu /* store PPC general register with update */ 305 /* redefined this to force an error on PPC64 to catch their use. */ 306 #define lmw lmd /* load multiple PPC general registers */ 307 #define stmw stmd /* store multiple PPC general registers */ 308 #define SZREG 8 /* 8 byte registers */ 309 310 #endif 311 312 #endif /* !_PPC_ASM_H_ */ 313
Indexes created Fri Oct 03 02:09:57 GMT 2025