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1.1 ! root 1: /* ! 2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. ! 3: * ! 4: * @APPLE_LICENSE_HEADER_START@ ! 5: * ! 6: * The contents of this file constitute Original Code as defined in and ! 7: * are subject to the Apple Public Source License Version 1.1 (the ! 8: * "License"). You may not use this file except in compliance with the ! 9: * License. Please obtain a copy of the License at ! 10: * http://www.apple.com/publicsource and read it before using this file. ! 11: * ! 12: * This Original Code and all software distributed under the License are ! 13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER ! 14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, ! 15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, ! 16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the ! 17: * License for the specific language governing rights and limitations ! 18: * under the License. ! 19: * ! 20: * @APPLE_LICENSE_HEADER_END@ ! 21: */ ! 22: /* Copyright (c) 1996 NeXT Software, Inc. All rights reserved. ! 23: * ! 24: * File: architecture/ppc/reg_help.h ! 25: * Author: Doug Mitchell, NeXT Computer, Inc. ! 26: * ! 27: * m98k-specific macros and inlines for defining machine registers. ! 28: * ! 29: * HISTORY ! 30: * 05-Nov-92 Doug Mitchell at NeXT ! 31: * Created. ! 32: * ! 33: * 29-Dec-96 Umesh Vaishampayan ([email protected]) ! 34: * Ported from m98k. Removed dependency on nrw directory. ! 35: * Merged code from architecture/nrw/reg_help.h. ! 36: * Moved Register Usage #defines from asm_help.h in here. ! 37: */ ! 38: ! 39: #ifndef _ARCH_PPC_REG_HELP_H_ ! 40: #define _ARCH_PPC_REG_HELP_H_ ! 41: ! 42: #if defined(__ASSEMBLER__) ! 43: /* ! 44: * GRF Register Usage Aliases ! 45: */ ! 46: #define zt r0 // architecturally 0 for mem refs only! ! 47: // real reg other inst, caller-saved ! 48: #define sp r1 // stack pointer, callee-saved ! 49: #define toc r2 // tbl of contents, callee-saved ! 50: #define a0 r3 // arg 0, return value 0, caller saved ! 51: #define a1 r4 // arg 1, return value 1, caller saved ! 52: #define a2 r5 // .... ! 53: #define a3 r6 ! 54: #define a4 r7 ! 55: #define a5 r8 ! 56: #define a6 r9 ! 57: #define a7 r10 // arg 7, return value 7, caller saved ! 58: #define ep r11 // environment ptr, caller saved ! 59: #define at r12 // assembler temp, caller saved ! 60: #define s17 r13 // callee-saved 17 ! 61: #define s16 r14 ! 62: #define s15 r15 ! 63: #define s14 r16 ! 64: #define s13 r17 ! 65: #define s12 r18 ! 66: #define s11 r19 ! 67: #define s10 r20 ! 68: #define s9 r21 ! 69: #define s8 r22 ! 70: #define s7 r23 ! 71: #define s6 r24 ! 72: #define s5 r25 ! 73: #define s4 r26 ! 74: #define s3 r27 ! 75: #define s2 r28 ! 76: #define s1 r29 // .... ! 77: #define s0 r30 // callee-saved 0 ! 78: #define fp r31 // frame-pointer, callee-saved ! 79: ! 80: /* ! 81: * Conversion of GRF aliases to register numbers ! 82: */ ! 83: #define GRF_ZT 0 // architecturally 0 for mem refs only! ! 84: // real reg other inst, caller-saved ! 85: #define GRF_SP 1 // stack pointer, callee-saved ! 86: #define GRF_TOC 2 // tbl of contents, callee-saved ! 87: #define GRF_A0 3 // arg 0, return value 0, caller saved ! 88: #define GRF_A1 4 // arg 1, return value 1, caller saved ! 89: #define GRF_A2 5 // .... ! 90: #define GRF_A3 6 ! 91: #define GRF_A4 7 ! 92: #define GRF_A5 8 ! 93: #define GRF_A6 9 ! 94: #define GRF_A7 10 // arg 7, return value 7, caller saved ! 95: #define GRF_EP 11 // environment ptr, caller saved ! 96: #define GRF_AT 12 // assembler temp, caller saved ! 97: #define GRF_S17 13 // callee-saved 17 ! 98: #define GRF_S16 14 ! 99: #define GRF_S15 15 ! 100: #define GRF_S14 16 ! 101: #define GRF_S13 17 ! 102: #define GRF_S12 18 ! 103: #define GRF_S11 19 ! 104: #define GRF_S10 20 ! 105: #define GRF_S9 21 ! 106: #define GRF_S8 22 ! 107: #define GRF_S7 23 ! 108: #define GRF_S6 24 ! 109: #define GRF_S5 25 ! 110: #define GRF_S4 26 ! 111: #define GRF_S3 27 ! 112: #define GRF_S2 28 ! 113: #define GRF_S1 29 // .... ! 114: #define GRF_S0 30 // callee-saved 0 ! 115: #define GRF_FP 31 // frame pointer, callee-saved ! 116: ! 117: /* ! 118: * FPF Register names ! 119: */ ! 120: #define ft0 f0 // scratch reg, caller-saved ! 121: #define fa0 f1 // fp arg 0, return 0, caller-saved ! 122: #define fa1 f2 // fp arg 1, caller-saved ! 123: #define fa2 f3 // fp arg 2, caller-saved ! 124: #define fa3 f4 ! 125: #define fa4 f5 ! 126: #define fa5 f6 ! 127: #define fa6 f7 ! 128: #define fa7 f8 ! 129: #define fa8 f9 ! 130: #define fa9 f10 ! 131: #define fa10 f11 ! 132: #define fa11 f12 ! 133: #define fa12 f13 // fp arg 12, caller-saved ! 134: #define fs17 f14 // callee-saved 17 ! 135: #define fs16 f15 ! 136: #define fs15 f16 ! 137: #define fs14 f17 ! 138: #define fs13 f18 ! 139: #define fs12 f19 ! 140: #define fs11 f20 ! 141: #define fs10 f21 ! 142: #define fs9 f22 ! 143: #define fs8 f23 ! 144: #define fs7 f24 ! 145: #define fs6 f25 ! 146: #define fs5 f26 ! 147: #define fs4 f27 ! 148: #define fs3 f28 ! 149: #define fs2 f29 ! 150: #define fs1 f30 ! 151: #define fs0 f31 // callee-saved 0 ! 152: ! 153: /* ! 154: * Conversion of FPF aliases to register numbers ! 155: */ ! 156: #define FPF_FT0 0 // scratch reg, caller-saved ! 157: #define FPF_FA0 1 // fp arg 0, return 0, caller-saved ! 158: #define FPF_FA1 2 // fp arg 1, caller-saved ! 159: #define FPF_FA2 3 // fp arg 2, caller-saved ! 160: #define FPF_FA3 4 ! 161: #define FPF_FA4 5 ! 162: #define FPF_FA5 6 ! 163: #define FPF_FA6 7 ! 164: #define FPF_FA7 8 ! 165: #define FPF_FA8 9 ! 166: #define FPF_FA9 10 ! 167: #define FPF_FA10 11 ! 168: #define FPF_FA11 12 ! 169: #define FPF_FA12 13 // fp arg 12, caller-saved ! 170: #define FPF_FS17 14 // callee-saved 17 ! 171: #define FPF_FS16 15 ! 172: #define FPF_FS15 16 ! 173: #define FPF_FS14 17 ! 174: #define FPF_FS13 18 ! 175: #define FPF_FS12 19 ! 176: #define FPF_FS11 20 ! 177: #define FPF_FS10 21 ! 178: #define FPF_FS9 22 ! 179: #define FPF_FS8 23 ! 180: #define FPF_FS7 24 ! 181: #define FPF_FS6 25 ! 182: #define FPF_FS5 26 ! 183: #define FPF_FS4 27 ! 184: #define FPF_FS3 28 ! 185: #define FPF_FS2 29 ! 186: #define FPF_FS1 30 ! 187: #define FPF_FS0 31 // callee-saved 0 ! 188: ! 189: #endif /* __ASSEMBLER__ */ ! 190: ! 191: ! 192: /* Bitfield definition aid */ ! 193: #define BITS_WIDTH(msb, lsb) ((msb)-(lsb)+1) ! 194: #define BIT_WIDTH(pos) (1) /* mostly to record the position */ ! 195: ! 196: /* Mask creation */ ! 197: #define MKMASK(width, offset) (((unsigned)-1)>>(32-(width))<<(offset)) ! 198: #define BITSMASK(msb, lsb) MKMASK(BITS_WIDTH(msb, lsb), lsb & 0x1f) ! 199: #define BITMASK(pos) MKMASK(BIT_WIDTH(pos), pos & 0x1f) ! 200: ! 201: /* Register addresses */ ! 202: #if __ASSEMBLER__ ! 203: # define REG_ADDR(type, addr) (addr) ! 204: #else /* ! __ASSEMBLER__ */ ! 205: # define REG_ADDR(type, addr) (*(volatile type *)(addr)) ! 206: #endif /* __ASSEMBLER__ */ ! 207: ! 208: /* Cast a register to be an unsigned */ ! 209: /* CAUTION : non naturally aligned foo can result into alignment traps ! 210: * use at own risk. ! 211: */ ! 212: #define CONTENTS(foo) (*(unsigned *) &(foo)) ! 213: ! 214: /* STRINGIFY -- perform all possible substitutions, then stringify */ ! 215: #define __STR(x) #x /* just a helper macro */ ! 216: #define STRINGIFY(x) __STR(x) ! 217: ! 218: /* ! 219: * Stack pointer must always be a multiple of 16 ! 220: */ ! 221: #define STACK_INCR 16 ! 222: #define ROUND_FRAME(x) ((((unsigned)(x)) + STACK_INCR - 1) & ~(STACK_INCR-1)) ! 223: ! 224: #endif /* _ARCH_PPC_REG_HELP_H_ */
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