asm.h revision 1.33
1 /* $NetBSD: asm.h,v 1.33 2011/01/17 08:23:56 matt 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 _LP64 38 39 /* ppc64 is always PIC, r2 is always the TOC */ 40 41 #define PIC_PLT(x) .x 42 43 #else 44 45 #ifdef PIC 46 #define PIC_PROLOGUE XXX 47 #define PIC_EPILOGUE XXX 48 #define PIC_PLT(x) x@plt 49 #ifdef __STDC__ 50 #define PIC_TOCNAME(name) .LCTOC_##name 51 #else 52 #define PIC_TOCNAME(name) .LCTOC_/**/name 53 #endif 54 #define PIC_TOCSETUP(name, reg) \ 55 .pushsection ".got2","aw" ;\ 56 PIC_TOCNAME(name) = . + 32768 ;\ 57 .popsection ;\ 58 bcl 20,31,1001f ;\ 59 1001: mflr reg ;\ 60 addis reg,reg,PIC_TOCNAME(name)-1001b@ha ;\ 61 addi reg,reg,PIC_TOCNAME(name)-1001b@l 62 #define PIC_GOTSETUP(reg) \ 63 bcl 20,31,2002f ;\ 64 2002: mflr reg ;\ 65 addis reg,reg,_GLOBAL_OFFSET_TABLE_-2002b@ha ;\ 66 addi reg,reg,_GLOBAL_OFFSET_TABLE_-2002b@l 67 #ifdef __STDC__ 68 #define PIC_GOT(x) XXX 69 #define PIC_GOTOFF(x) XXX 70 #else /* not __STDC__ */ 71 #define PIC_GOT(x) XXX 72 #define PIC_GOTOFF(x) XXX 73 #endif /* __STDC__ */ 74 #else 75 #define PIC_PROLOGUE 76 #define PIC_EPILOGUE 77 #define PIC_PLT(x) x 78 #define PIC_GOT(x) x 79 #define PIC_GOTOFF(x) x 80 #define PIC_GOTSETUP(r) 81 #define PIC_TOCSETUP(n, r) 82 #endif 83 84 #endif 85 86 #define _C_LABEL(x) x 87 #define _ASM_LABEL(x) x 88 89 #define _GLOBAL(x) \ 90 .data; .align 2; .globl x; x: 91 92 #ifdef GPROF 93 # define _PROF_PROLOGUE mflr 0; stw 0,4(1); bl _mcount 94 #else 95 # define _PROF_PROLOGUE 96 #endif 97 98 #ifdef _LP64 99 100 #define SF_HEADER_SZ 48 101 #define SF_PARAM_SZ 64 102 #define SF_SZ (SF_HEADER_SZ + SF_PARAM_SZ) 103 104 #define SF_SP 0 105 #define SF_CR 8 106 #define SF_LR 16 107 #define SF_PARAM SF_HEADER_SZ 108 109 #define ENTRY(y) \ 110 .globl y; \ 111 .section ".opd","aw"; \ 112 .align 3; \ 113 y: .quad .y,.TOC.@tocbase,0; \ 114 .previous; \ 115 .size y,24; \ 116 .type .y,@function; \ 117 .globl .y; \ 118 .align 3; \ 119 .y: 120 121 #define CALL(y) \ 122 bl .y; \ 123 nop 124 125 #define ENTRY_NOPROFILE(y) ENTRY(y) 126 #define ASENTRY(y) ENTRY(y) 127 #else 128 129 #define _ENTRY(x) \ 130 .text; .align 2; .globl x; .type x,@function; x: 131 132 #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 133 #define END(y) .size _C_LABEL(y),.-_C_LABEL(y) 134 135 #define ENTRY_NOPROFILE(y) _ENTRY(_C_LABEL(y)) 136 137 #define CALL(y) \ 138 bl y 139 140 #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 141 #endif 142 143 #define GLOBAL(y) _GLOBAL(_C_LABEL(y)) 144 145 #define ASMSTR .asciz 146 147 #define RCSID(x) __RCSID(x) 148 #define __RCSID(x) .pushsection .ident; .asciz x; .popsection 149 150 #ifdef __ELF__ 151 #define WEAK_ALIAS(alias,sym) \ 152 .weak alias; \ 153 alias = sym 154 #endif 155 /* 156 * STRONG_ALIAS: create a strong alias. 157 */ 158 #define STRONG_ALIAS(alias,sym) \ 159 .globl alias; \ 160 alias = sym 161 162 #ifdef __STDC__ 163 #define WARN_REFERENCES(sym,msg) \ 164 .pushsection .gnu.warning. ## sym; \ 165 .ascii msg; \ 166 .popsection 167 #else 168 #define WARN_REFERENCES(sym,msg) \ 169 .pushsection .gnu.warning./**/sym; \ 170 .ascii msg; \ 171 .popsection 172 #endif /* __STDC__ */ 173 174 #ifdef _KERNEL 175 /* 176 * Get cpu_info pointer for current processor. Always in SPRG0. *ALWAYS* 177 */ 178 #define GET_CPUINFO(r) mfsprg r,0 179 /* 180 * IN: 181 * R4[er] = first free byte beyond end/esym. 182 * 183 * OUT: 184 * R1[sp] = new kernel stack 185 * R4[er] = kernelend 186 */ 187 188 #define INIT_CPUINFO(er,sp,tmp1,tmp2) \ 189 li tmp1,PGOFSET; \ 190 add er,er,tmp1; \ 191 andc er,er,tmp1; /* page align */ \ 192 lis tmp1,_C_LABEL(cpu_info)@ha; \ 193 addi tmp1,tmp1,_C_LABEL(cpu_info)@l; \ 194 mtsprg0 tmp1; /* save for later use */ \ 195 addi er,er,INTSTK; \ 196 stptr er,CI_INTSTK(tmp1); \ 197 lis tmp2,_C_LABEL(emptyidlespin)@h; \ 198 ori tmp2,tmp2,_C_LABEL(emptyidlespin)@l; \ 199 stptr tmp2,CI_IDLESPIN(tmp1); \ 200 li tmp2,-1; \ 201 stint tmp2,CI_INTRDEPTH(tmp1); \ 202 li tmp2,0; \ 203 stptr tmp2,-CALLFRAMELEN(er); /* terminate idle stack chain */\ 204 lis tmp1,_C_LABEL(lwp0)+L_PCB@ha; /* XXXuvm_lwp_getuarea */ \ 205 stptr er,_C_LABEL(lwp0)+L_PCB@l(tmp1); \ 206 addi er,er,USPACE; /* stackpointer for proc0 */ \ 207 addi sp,er,-FRAMELEN; /* stackpointer for proc0 */ \ 208 /* er = end of mem reserved for kernel */ \ 209 stptru tmp2,-CALLFRAMELEN(sp) /* end of stack chain */ 210 211 #endif 212 213 /* Condition Register Bit Fields */ 214 215 #if defined(_REGNAMES) 216 #if defined(_KERNEL) || defined(_STANDALONE) 217 #define cr0 0 218 #define cr1 1 219 #define cr2 2 220 #define cr3 3 221 #define cr4 4 222 #define cr5 5 223 #define cr6 6 224 #define cr7 7 225 #endif 226 227 /* General Purpose Registers (GPRs) */ 228 229 #if defined(_KERNEL) || defined(_STANDALONE) 230 #define r0 0 231 #define r1 1 232 #define r2 2 233 #define r3 3 234 #define r4 4 235 #define r5 5 236 #define r6 6 237 #define r7 7 238 #define r8 8 239 #define r9 9 240 #define r10 10 241 #define r11 11 242 #define r12 12 243 #define r13 13 244 #define r14 14 245 #define r15 15 246 #define r16 16 247 #define r17 17 248 #define r18 18 249 #define r19 19 250 #define r20 20 251 #define r21 21 252 #define r22 22 253 #define r23 23 254 #define r24 24 255 #define r25 25 256 #define r26 26 257 #define r27 27 258 #define r28 28 259 #define r29 29 260 #define r30 30 261 #define r31 31 262 #endif 263 264 /* Floating Point Registers (FPRs) */ 265 266 #if defined(_KERNEL) || defined(_STANDALONE) 267 #define fr0 0 268 #define fr1 1 269 #define fr2 2 270 #define fr3 3 271 #define fr4 4 272 #define fr5 5 273 #define fr6 6 274 #define fr7 7 275 #define fr8 8 276 #define fr9 9 277 #define fr10 10 278 #define fr11 11 279 #define fr12 12 280 #define fr13 13 281 #define fr14 14 282 #define fr15 15 283 #define fr16 16 284 #define fr17 17 285 #define fr18 18 286 #define fr19 19 287 #define fr20 20 288 #define fr21 21 289 #define fr22 22 290 #define fr23 23 291 #define fr24 24 292 #define fr25 25 293 #define fr26 26 294 #define fr27 27 295 #define fr28 28 296 #define fr29 29 297 #define fr30 30 298 #define fr31 31 299 #endif 300 #endif /* _REGNAMES */ 301 302 /* 303 * Add some psuedo instructions to made sharing of assembly versions of 304 * ILP32 and LP64 code possible. 305 */ 306 #define ldint lwz /* not needed but for completeness */ 307 #define ldintu lwzu /* not needed but for completeness */ 308 #define stint stw /* not needed but for completeness */ 309 #define stintu stwu /* not needed but for completeness */ 310 311 #ifndef _LP64 312 313 #define ldlong lwz /* load "C" long */ 314 #define ldlongu lwzu /* load "C" long with udpate */ 315 #define stlong stw /* load "C" long */ 316 #define stlongu stwu /* load "C" long with udpate */ 317 #define ldptr lwz /* load "C" pointer */ 318 #define ldptru lwzu /* load "C" pointer with udpate */ 319 #define stptr stw /* load "C" pointer */ 320 #define stptru stwu /* load "C" pointer with udpate */ 321 #define ldreg lwz /* load PPC general register */ 322 #define ldregu lwzu /* load PPC general register with udpate */ 323 #define streg stw /* load PPC general register */ 324 #define stregu stwu /* load PPC general register with udpate */ 325 #define SZREG 4 /* 4 byte registers */ 326 327 #define lptrarx lwarx /* load "C" pointer with reservation */ 328 #define llongarx lwarx /* load "C" long with reservation */ 329 #define lregarx lwarx /* load PPC general register with reservation */ 330 331 #define stptrcx stwcx /* store "C" pointer conditional */ 332 #define stlongcx stwcx /* store "C" long conditional */ 333 #define stregcx stwcx /* store PPC general register conditional */ 334 335 #define clrrptri clrrwi /* clear right "C" pointer immediate */ 336 #define clrrlongi clrrwi /* clear right "C" long immediate */ 337 #define clrrregi clrrwi /* clear right PPC general register immediate */ 338 339 #else 340 341 #define ldlong ld /* load "C" long */ 342 #define ldlongu ldu /* load "C" long with update */ 343 #define stlong std /* store "C" long */ 344 #define stlongu stdu /* store "C" long with update */ 345 #define ldptr ld /* load "C" pointer */ 346 #define ldptru ldu /* load "C" pointer with update */ 347 #define stptr std /* store "C" pointer */ 348 #define stptru stdu /* store "C" pointer with update */ 349 #define ldreg ld /* load PPC general register */ 350 #define ldregu ldu /* load PPC general register with update */ 351 #define streg std /* store PPC general register */ 352 #define stregu stdu /* store PPC general register with update */ 353 /* redefined this to force an error on PPC64 to catch their use. */ 354 #define lmw lmd /* load multiple PPC general registers */ 355 #define stmw stmd /* store multiple PPC general registers */ 356 #define SZREG 8 /* 8 byte registers */ 357 358 #define lptrarx ldarx /* load "C" pointer with reservation */ 359 #define llongarx ldarx /* load "C" long with reservation */ 360 #define lregarx ldarx /* load PPC general register with reservation */ 361 362 #define stptrcx stdcx /* store "C" pointer conditional */ 363 #define stlongcx stdcx /* store "C" long conditional */ 364 #define stregax stdcx /* store PPC general register conditional */ 365 366 #define clrrptri clrrdi /* clear right "C" pointer immediate */ 367 #define clrrlongi clrrdi /* clear right "C" long immediate */ 368 #define clrrregi clrrdi /* clear right PPC general register immediate */ 369 370 #endif 371 372 #ifdef _LOCORE 373 .macro stmd r,dst 374 i = 0 375 .rept 32-\r 376 std i+\r, i*8+\dst 377 i = i + 1 378 .endr 379 .endm 380 381 .macro lmd r,dst 382 i = 0 383 .rept 32-\r 384 ld i+\r, i*8+\dst 385 i = i + 1 386 .endr 387 .endm 388 #endif 389 390 #endif /* !_PPC_ASM_H_ */ 391
Indexes created Fri Oct 03 02:09:57 GMT 2025