asm.h revision 1.37
1 /* $NetBSD: asm.h,v 1.37 2011/06/05 16:52:25 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 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 #undef __RCSID 148 #define RCSID(x) __RCSID(x) 149 #define __RCSID(x) .pushsection .ident; .asciz x; .popsection 150 151 #ifdef __ELF__ 152 #define WEAK_ALIAS(alias,sym) \ 153 .weak alias; \ 154 alias = sym 155 #endif 156 /* 157 * STRONG_ALIAS: create a strong alias. 158 */ 159 #define STRONG_ALIAS(alias,sym) \ 160 .globl alias; \ 161 alias = sym 162 163 #ifdef __STDC__ 164 #define WARN_REFERENCES(sym,msg) \ 165 .pushsection .gnu.warning. ## sym; \ 166 .ascii msg; \ 167 .popsection 168 #else 169 #define WARN_REFERENCES(sym,msg) \ 170 .pushsection .gnu.warning./**/sym; \ 171 .ascii msg; \ 172 .popsection 173 #endif /* __STDC__ */ 174 175 #ifdef _KERNEL 176 /* 177 * Get cpu_info pointer for current processor. Always in SPRG0. *ALWAYS* 178 */ 179 #define GET_CPUINFO(r) mfsprg r,0 180 /* 181 * IN: 182 * R4[er] = first free byte beyond end/esym. 183 * 184 * OUT: 185 * R1[sp] = new kernel stack 186 * R4[er] = kernelend 187 */ 188 189 #ifdef CI_INTSTK 190 #define INIT_CPUINFO_INTSTK(er,tmp1) \ 191 addi er,er,INTSTK; \ 192 stptr er,CI_INTSTK(tmp1) 193 #else 194 #define INIT_CPUINFO_INTSTK(er,tmp1) /* nothing */ 195 #endif 196 197 /* 198 * We use lis/ori instead of lis/addi in case tmp2 is r0. 199 */ 200 #define INIT_CPUINFO(er,sp,tmp1,tmp2) \ 201 li tmp1,PAGE_MASK; \ 202 add er,er,tmp1; \ 203 andc er,er,tmp1; /* page align */ \ 204 lis tmp1,_C_LABEL(cpu_info)@ha; \ 205 addi tmp1,tmp1,_C_LABEL(cpu_info)@l; \ 206 mtsprg0 tmp1; /* save for later use */ \ 207 INIT_CPUINFO_INTSTK(er,tmp1); \ 208 lis tmp2,_C_LABEL(emptyidlespin)@h; \ 209 ori tmp2,tmp2,_C_LABEL(emptyidlespin)@l; \ 210 stptr tmp2,CI_IDLESPIN(tmp1); \ 211 li tmp2,-1; \ 212 stint tmp2,CI_IDEPTH(tmp1); \ 213 li tmp2,0; \ 214 lis %r13,_C_LABEL(lwp0)@h; \ 215 ori %r13,%r13,_C_LABEL(lwp0)@l; \ 216 stptr er,L_PCB(%r13); /* XXXuvm_lwp_getuarea */ \ 217 addi er,er,USPACE; /* stackpointer for lwp0 */ \ 218 addi sp,er,-FRAMELEN-CALLFRAMELEN; /* stackpointer for lwp0 */ \ 219 stptr sp,L_MD_UTF(%r13); /* save in lwp0.l_md.md_utf */ \ 220 /* er = end of mem reserved for kernel */ \ 221 li tmp2,0; \ 222 stptr tmp2,-CALLFRAMELEN(er); /* end of stack chain */ \ 223 stptru tmp2,-CALLFRAMELEN(sp) /* end of stack chain */ 224 225 #endif 226 227 /* Condition Register Bit Fields */ 228 229 #if defined(_REGNAMES) 230 #if defined(_KERNEL) || defined(_STANDALONE) 231 #define cr0 0 232 #define cr1 1 233 #define cr2 2 234 #define cr3 3 235 #define cr4 4 236 #define cr5 5 237 #define cr6 6 238 #define cr7 7 239 #endif 240 241 /* General Purpose Registers (GPRs) */ 242 243 #if defined(_KERNEL) || defined(_STANDALONE) 244 #define r0 0 245 #define r1 1 246 #define r2 2 247 #define r3 3 248 #define r4 4 249 #define r5 5 250 #define r6 6 251 #define r7 7 252 #define r8 8 253 #define r9 9 254 #define r10 10 255 #define r11 11 256 #define r12 12 257 #define r13 13 258 #define r14 14 259 #define r15 15 260 #define r16 16 261 #define r17 17 262 #define r18 18 263 #define r19 19 264 #define r20 20 265 #define r21 21 266 #define r22 22 267 #define r23 23 268 #define r24 24 269 #define r25 25 270 #define r26 26 271 #define r27 27 272 #define r28 28 273 #define r29 29 274 #define r30 30 275 #define r31 31 276 #endif 277 278 /* Floating Point Registers (FPRs) */ 279 280 #if defined(_KERNEL) || defined(_STANDALONE) 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 314 #endif /* _REGNAMES */ 315 316 /* 317 * Add some psuedo instructions to made sharing of assembly versions of 318 * ILP32 and LP64 code possible. 319 */ 320 #define ldint lwz /* not needed but for completeness */ 321 #define ldintu lwzu /* not needed but for completeness */ 322 #define stint stw /* not needed but for completeness */ 323 #define stintu stwu /* not needed but for completeness */ 324 325 #ifndef _LP64 326 327 #define ldlong lwz /* load "C" long */ 328 #define ldlongu lwzu /* load "C" long with udpate */ 329 #define stlong stw /* load "C" long */ 330 #define stlongu stwu /* load "C" long with udpate */ 331 #define ldptr lwz /* load "C" pointer */ 332 #define ldptru lwzu /* load "C" pointer with udpate */ 333 #define stptr stw /* load "C" pointer */ 334 #define stptru stwu /* load "C" pointer with udpate */ 335 #define ldreg lwz /* load PPC general register */ 336 #define ldregu lwzu /* load PPC general register with udpate */ 337 #define streg stw /* load PPC general register */ 338 #define stregu stwu /* load PPC general register with udpate */ 339 #define SZREG 4 /* 4 byte registers */ 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 #else 354 355 #define ldlong ld /* load "C" long */ 356 #define ldlongu ldu /* load "C" long with update */ 357 #define stlong std /* store "C" long */ 358 #define stlongu stdu /* store "C" long with update */ 359 #define ldptr ld /* load "C" pointer */ 360 #define ldptru ldu /* load "C" pointer with update */ 361 #define stptr std /* store "C" pointer */ 362 #define stptru stdu /* store "C" pointer with update */ 363 #define ldreg ld /* load PPC general register */ 364 #define ldregu ldu /* load PPC general register with update */ 365 #define streg std /* store PPC general register */ 366 #define stregu stdu /* store PPC general register with update */ 367 /* redefined this to force an error on PPC64 to catch their use. */ 368 #define lmw lmd /* load multiple PPC general registers */ 369 #define stmw stmd /* store multiple PPC general registers */ 370 #define SZREG 8 /* 8 byte registers */ 371 372 #define lptrarx ldarx /* load "C" pointer with reservation */ 373 #define llongarx ldarx /* load "C" long with reservation */ 374 #define lregarx ldarx /* load PPC general register with reservation */ 375 376 #define stptrcx stdcx /* store "C" pointer conditional */ 377 #define stlongcx stdcx /* store "C" long conditional */ 378 #define stregax stdcx /* store PPC general register conditional */ 379 380 #define clrrptri clrrdi /* clear right "C" pointer immediate */ 381 #define clrrlongi clrrdi /* clear right "C" long immediate */ 382 #define clrrregi clrrdi /* clear right PPC general register immediate */ 383 384 #endif 385 386 #ifdef _LOCORE 387 .macro stmd r,dst 388 i = 0 389 .rept 32-\r 390 std i+\r, i*8+\dst 391 i = i + 1 392 .endr 393 .endm 394 395 .macro lmd r,dst 396 i = 0 397 .rept 32-\r 398 ld i+\r, i*8+\dst 399 i = i + 1 400 .endr 401 .endm 402 #endif 403 404 #endif /* !_PPC_ASM_H_ */ 405
Indexes created Fri Oct 03 02:09:57 GMT 2025