1 /* $NetBSD: asm.h,v 1.46 2014/03/06 19:05:24 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+32768@plt 49 # ifdef __STDC__ 50 # define PIC_TOCNAME(name) .LCTOC_##name 51 # else 52 # define PIC_TOCNAME(name) .LCTOC_/**/name 53 # endif /* __STDC __*/ 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 /* !__PIC__ */ 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 /* __PIC__ */ 83 84 #endif /* __LP64__ */ 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 _XENTRY(y) \ 110 .globl y; \ 111 .pushsection ".opd","aw"; \ 112 .align 3; \ 113 y: .quad .##y,.TOC.@tocbase,0; \ 114 .popsection; \ 115 .size y,24; \ 116 .type .##y,@function; \ 117 .globl .##y; \ 118 .align 3; \ 119 .##y: 120 121 #define _ENTRY(x) .text; _XENTRY(x) 122 123 # define ENTRY(y) _ENTRY(y) 124 125 # define END(y) .size .##y,. - .##y 126 127 # define CALL(y) \ 128 bl .y; \ 129 nop 130 131 # define ENTRY_NOPROFILE(y) ENTRY(y) 132 # define ASENTRY(y) ENTRY(y) 133 #else /* !_LP64 */ 134 135 # define _XENTRY(x) .align 2; .globl x; .type x,@function; x: 136 # define _ENTRY(x) .text; _XENTRY(x) 137 138 # define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 139 140 # define END(y) .size _C_LABEL(y),.-_C_LABEL(y) 141 142 # define CALL(y) \ 143 bl y 144 145 # define ENTRY_NOPROFILE(y) _ENTRY(_C_LABEL(y)) 146 # define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 147 #endif /* __LP64__ */ 148 149 #define GLOBAL(y) _GLOBAL(_C_LABEL(y)) 150 151 #define ASMSTR .asciz 152 153 #undef __RCSID 154 #define RCSID(x) __RCSID(x) 155 #define __RCSID(x) .pushsection .ident; .asciz x; .popsection 156 157 #ifdef __ELF__ 158 # define WEAK_ALIAS(alias,sym) \ 159 .weak alias; \ 160 alias = sym 161 #endif /* __ELF__ */ 162 /* 163 * STRONG_ALIAS: create a strong alias. 164 */ 165 #define STRONG_ALIAS(alias,sym) \ 166 .globl alias; \ 167 alias = sym 168 169 #ifdef __STDC__ 170 # define WARN_REFERENCES(sym,msg) \ 171 .pushsection .gnu.warning. ## sym; \ 172 .ascii msg; \ 173 .popsection 174 #else 175 # define WARN_REFERENCES(sym,msg) \ 176 .pushsection .gnu.warning./**/sym; \ 177 .ascii msg; \ 178 .popsection 179 #endif /* __STDC__ */ 180 181 #ifdef _KERNEL 182 /* 183 * Get cpu_info pointer for current processor. Always in SPRG0. *ALWAYS* 184 */ 185 # define GET_CPUINFO(r) mfsprg r,0 186 /* 187 * IN: 188 * R4[er] = first free byte beyond end/esym. 189 * 190 * OUT: 191 * R1[sp] = new kernel stack 192 * R4[er] = kernelend 193 */ 194 195 # ifdef CI_INTSTK 196 # define INIT_CPUINFO_INTSTK(er,tmp1) \ 197 addis er,er,INTSTK@ha; \ 198 addi er,er,INTSTK@l; \ 199 stptr er,CI_INTSTK(tmp1) 200 # else 201 # define INIT_CPUINFO_INTSTK(er,tmp1) /* nothing */ 202 # endif /* CI_INTSTK */ 203 204 /* 205 * We use lis/ori instead of lis/addi in case tmp2 is r0. 206 */ 207 # define INIT_CPUINFO(er,sp,tmp1,tmp2) \ 208 li tmp1,PAGE_MASK; \ 209 add er,er,tmp1; \ 210 andc er,er,tmp1; /* page align */ \ 211 lis tmp1,_C_LABEL(cpu_info)@ha; \ 212 addi tmp1,tmp1,_C_LABEL(cpu_info)@l; \ 213 mtsprg0 tmp1; /* save for later use */ \ 214 INIT_CPUINFO_INTSTK(er,tmp1); \ 215 lis tmp2,_C_LABEL(emptyidlespin)@h; \ 216 ori tmp2,tmp2,_C_LABEL(emptyidlespin)@l; \ 217 stptr tmp2,CI_IDLESPIN(tmp1); \ 218 li tmp2,-1; \ 219 stint tmp2,CI_IDEPTH(tmp1); \ 220 li tmp2,0; \ 221 lis %r13,_C_LABEL(lwp0)@h; \ 222 ori %r13,%r13,_C_LABEL(lwp0)@l; \ 223 stptr er,L_PCB(%r13); /* XXXuvm_lwp_getuarea */ \ 224 stptr tmp1,L_CPU(%r13); \ 225 addis er,er,USPACE@ha; /* stackpointer for lwp0 */ \ 226 addi er,er,USPACE@l; /* stackpointer for lwp0 */ \ 227 addi sp,er,-FRAMELEN-CALLFRAMELEN; /* stackpointer for lwp0 */ \ 228 stptr sp,L_MD_UTF(%r13); /* save in lwp0.l_md.md_utf */ \ 229 /* er = end of mem reserved for kernel */ \ 230 li tmp2,0; \ 231 stptr tmp2,-CALLFRAMELEN(er); /* end of stack chain */ \ 232 stptru tmp2,-CALLFRAMELEN(sp) /* end of stack chain */ 233 234 #endif /* _KERNEL */ 235 236 237 #if defined(_REGNAMES) && (defined(_KERNEL) || defined(_STANDALONE)) 238 /* Condition Register Bit Fields */ 239 # define cr0 0 240 # define cr1 1 241 # define cr2 2 242 # define cr3 3 243 # define cr4 4 244 # define cr5 5 245 # define cr6 6 246 # define cr7 7 247 /* General Purpose Registers (GPRs) */ 248 # define r0 0 249 # define r1 1 250 # define r2 2 251 # define r3 3 252 # define r4 4 253 # define r5 5 254 # define r6 6 255 # define r7 7 256 # define r8 8 257 # define r9 9 258 # define r10 10 259 # define r11 11 260 # define r12 12 261 # define r13 13 262 # define r14 14 263 # define r15 15 264 # define r16 16 265 # define r17 17 266 # define r18 18 267 # define r19 19 268 # define r20 20 269 # define r21 21 270 # define r22 22 271 # define r23 23 272 # define r24 24 273 # define r25 25 274 # define r26 26 275 # define r27 27 276 # define r28 28 277 # define r29 29 278 # define r30 30 279 # define r31 31 280 /* Floating Point Registers (FPRs) */ 281 # define fr0 0 282 # define fr1 1 283 # define fr2 2 284 # define fr3 3 285 # define fr4 4 286 # define fr5 5 287 # define fr6 6 288 # define fr7 7 289 # define fr8 8 290 # define fr9 9 291 # define fr10 10 292 # define fr11 11 293 # define fr12 12 294 # define fr13 13 295 # define fr14 14 296 # define fr15 15 297 # define fr16 16 298 # define fr17 17 299 # define fr18 18 300 # define fr19 19 301 # define fr20 20 302 # define fr21 21 303 # define fr22 22 304 # define fr23 23 305 # define fr24 24 306 # define fr25 25 307 # define fr26 26 308 # define fr27 27 309 # define fr28 28 310 # define fr29 29 311 # define fr30 30 312 # define fr31 31 313 #endif /* _REGNAMES && (_KERNEL || _STANDALONE) */ 314 315 /* 316 * Add some psuedo instructions to made sharing of assembly versions of 317 * ILP32 and LP64 code possible. 318 */ 319 #define ldint lwz /* not needed but for completeness */ 320 #define ldintu lwzu /* not needed but for completeness */ 321 #define stint stw /* not needed but for completeness */ 322 #define stintu stwu /* not needed but for completeness */ 323 324 #ifndef _LP64 325 326 # define ldlong lwz /* load "C" long */ 327 # define ldlongu lwzu /* load "C" long with udpate */ 328 # define stlong stw /* load "C" long */ 329 # define stlongu stwu /* load "C" long with udpate */ 330 # define ldptr lwz /* load "C" pointer */ 331 # define ldptru lwzu /* load "C" pointer with udpate */ 332 # define stptr stw /* load "C" pointer */ 333 # define stptru stwu /* load "C" pointer with udpate */ 334 # define ldreg lwz /* load PPC general register */ 335 # define ldregu lwzu /* load PPC general register with udpate */ 336 # define streg stw /* load PPC general register */ 337 # define stregu stwu /* load PPC general register with udpate */ 338 # define SZREG 4 /* 4 byte registers */ 339 # define P2SZREG 2 340 341 # define lptrarx lwarx /* load "C" pointer with reservation */ 342 # define llongarx lwarx /* load "C" long with reservation */ 343 # define lregarx lwarx /* load PPC general register with reservation */ 344 345 # define stptrcx stwcx /* store "C" pointer conditional */ 346 # define stlongcx stwcx /* store "C" long conditional */ 347 # define stregcx stwcx /* store PPC general register conditional */ 348 349 # define clrrptri clrrwi /* clear right "C" pointer immediate */ 350 # define clrrlongi clrrwi /* clear right "C" long immediate */ 351 # define clrrregi clrrwi /* clear right PPC general register immediate */ 352 353 # define cmpptr cmpw 354 # define cmplong cmpw 355 # define cmpreg cmpw 356 # define cmpptri cmpwi 357 # define cmplongi cmpwi 358 # define cmpregi cmpwi 359 # define cmpptrl cmpwl 360 # define cmplongl cmpwl 361 # define cmpregl cmpwl 362 # define cmpptrli cmpwli 363 # define cmplongli cmpwli 364 # define cmpregli cmpwli 365 366 #else /* __LP64__ */ 367 368 # define ldlong ld /* load "C" long */ 369 # define ldlongu ldu /* load "C" long with update */ 370 # define stlong std /* store "C" long */ 371 # define stlongu stdu /* store "C" long with update */ 372 # define ldptr ld /* load "C" pointer */ 373 # define ldptru ldu /* load "C" pointer with update */ 374 # define stptr std /* store "C" pointer */ 375 # define stptru stdu /* store "C" pointer with update */ 376 # define ldreg ld /* load PPC general register */ 377 # define ldregu ldu /* load PPC general register with update */ 378 # define streg std /* store PPC general register */ 379 # define stregu stdu /* store PPC general register with update */ 380 /* redefined this to force an error on PPC64 to catch their use. */ 381 # define lmw lmd /* load multiple PPC general registers */ 382 # define stmw stmd /* store multiple PPC general registers */ 383 # define SZREG 8 /* 8 byte registers */ 384 # define P2SZREG 3 385 386 # define lptrarx ldarx /* load "C" pointer with reservation */ 387 # define llongarx ldarx /* load "C" long with reservation */ 388 # define lregarx ldarx /* load PPC general register with reservation */ 389 390 # define stptrcx stdcx /* store "C" pointer conditional */ 391 # define stlongcx stdcx /* store "C" long conditional */ 392 # define stregax stdcx /* store PPC general register conditional */ 393 394 # define clrrptri clrrdi /* clear right "C" pointer immediate */ 395 # define clrrlongi clrrdi /* clear right "C" long immediate */ 396 # define clrrregi clrrdi /* clear right PPC general register immediate */ 397 398 # define cmpptr cmpd 399 # define cmplong cmpd 400 # define cmpreg cmpd 401 # define cmpptri cmpdi 402 # define cmplongi cmpdi 403 # define cmpregi cmpdi 404 # define cmpptrl cmpdl 405 # define cmplongl cmpdl 406 # define cmpregl cmpdl 407 # define cmpptrli cmpdli 408 # define cmplongli cmpdli 409 # define cmpregli cmpdli 410 411 #endif /* __LP64__ */ 412 413 #ifdef _LOCORE 414 .macro stmd r,dst 415 i = 0 416 .rept 32-\r 417 std i+\r, i*8+\dst 418 i = i + 1 419 .endr 420 .endm 421 422 .macro lmd r,dst 423 i = 0 424 .rept 32-\r 425 ld i+\r, i*8+\dst 426 i = i + 1 427 .endr 428 .endm 429 #endif /* _LOCORE */ 430 431 #endif /* !_PPC_ASM_H_ */ 432