| 1 | /*␊ |
| 2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * @APPLE_LICENSE_HEADER_START@␊ |
| 5 | * ␊ |
| 6 | * This file contains Original Code and/or Modifications of Original Code␊ |
| 7 | * as defined in and that are subject to the Apple Public Source License␊ |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in␊ |
| 9 | * compliance with the License. Please obtain a copy of the License at␊ |
| 10 | * http://www.opensource.apple.com/apsl/ and read it before using this␊ |
| 11 | * file.␊ |
| 12 | * ␊ |
| 13 | * The Original Code and all software distributed under the License are␊ |
| 14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
| 15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊ |
| 18 | * Please see the License for the specific language governing rights and␊ |
| 19 | * limitations under the License.␊ |
| 20 | * ␊ |
| 21 | * @APPLE_LICENSE_HEADER_END@␊ |
| 22 | */␊ |
| 23 | /* Copyright (c) 1996 NeXT Software, Inc. All rights reserved.␊ |
| 24 | *␊ |
| 25 | *␉File:␉architecture/ppc/reg_help.h␊ |
| 26 | *␉Author:␉Doug Mitchell, NeXT Computer, Inc.␊ |
| 27 | *␊ |
| 28 | *␉m98k-specific macros and inlines for defining machine registers.␊ |
| 29 | *␊ |
| 30 | * HISTORY␊ |
| 31 | * 05-Nov-92 Doug Mitchell at NeXT␊ |
| 32 | *␉Created.␊ |
| 33 | *␊ |
| 34 | * 29-Dec-96 Umesh Vaishampayan (umeshv@NeXT.com)␊ |
| 35 | *␉Ported from m98k. Removed dependency on nrw directory.␊ |
| 36 | *␉Merged code from architecture/nrw/reg_help.h.␊ |
| 37 | *␉Moved Register Usage #defines from asm_help.h in here.␊ |
| 38 | */␊ |
| 39 | ␊ |
| 40 | #ifndef _ARCH_PPC_REG_HELP_H_␊ |
| 41 | #define _ARCH_PPC_REG_HELP_H_␊ |
| 42 | ␊ |
| 43 | #if defined(__ASSEMBLER__)␊ |
| 44 | /*␊ |
| 45 | * GRF Register Usage Aliases␊ |
| 46 | */␊ |
| 47 | #define␉zt␉␉r0␉␉// architecturally 0 for mem refs only!␊ |
| 48 | ␉␉␉␉␉// real reg other inst, caller-saved␊ |
| 49 | #define␉sp␉␉r1␉␉// stack pointer, callee-saved␊ |
| 50 | #define␉toc␉␉r2␉␉// tbl of contents, callee-saved␊ |
| 51 | #define␉a0␉␉r3␉␉// arg 0, return value 0, caller saved␊ |
| 52 | #define␉a1␉␉r4␉␉// arg 1, return value 1, caller saved␊ |
| 53 | #define␉a2␉␉r5␉␉// ....␊ |
| 54 | #define␉a3␉␉r6␊ |
| 55 | #define␉a4␉␉r7␊ |
| 56 | #define␉a5␉␉r8␊ |
| 57 | #define␉a6␉␉r9␊ |
| 58 | #define␉a7␉␉r10␉␉// arg 7, return value 7, caller saved␊ |
| 59 | #define␉ep␉␉r11␉␉// environment ptr, caller saved␊ |
| 60 | #define␉at␉␉r12␉␉// assembler temp, caller saved␊ |
| 61 | #define␉s17␉␉r13␉␉// callee-saved 17␊ |
| 62 | #define␉s16␉␉r14␊ |
| 63 | #define␉s15␉␉r15␊ |
| 64 | #define␉s14␉␉r16␊ |
| 65 | #define␉s13␉␉r17␊ |
| 66 | #define␉s12␉␉r18␊ |
| 67 | #define␉s11␉␉r19␊ |
| 68 | #define␉s10␉␉r20␊ |
| 69 | #define␉s9␉␉r21␊ |
| 70 | #define␉s8␉␉r22␊ |
| 71 | #define␉s7␉␉r23␊ |
| 72 | #define␉s6␉␉r24␊ |
| 73 | #define␉s5␉␉r25␊ |
| 74 | #define␉s4␉␉r26␊ |
| 75 | #define␉s3␉␉r27␊ |
| 76 | #define␉s2␉␉r28␊ |
| 77 | #define␉s1␉␉r29␉␉// ....␊ |
| 78 | #define␉s0␉␉r30␉␉// callee-saved 0␊ |
| 79 | #define␉fp␉␉r31␉␉// frame-pointer, callee-saved␊ |
| 80 | ␊ |
| 81 | /*␊ |
| 82 | * Conversion of GRF aliases to register numbers␊ |
| 83 | */␊ |
| 84 | #define␉GRF_ZT␉␉0␉␉// architecturally 0 for mem refs only!␊ |
| 85 | ␉␉␉␉␉// real reg other inst, caller-saved␊ |
| 86 | #define␉GRF_SP␉␉1␉␉// stack pointer, callee-saved␊ |
| 87 | #define␉GRF_TOC␉␉2␉␉// tbl of contents, callee-saved␊ |
| 88 | #define␉GRF_A0␉␉3␉␉// arg 0, return value 0, caller saved␊ |
| 89 | #define␉GRF_A1␉␉4␉␉// arg 1, return value 1, caller saved␊ |
| 90 | #define␉GRF_A2␉␉5␉␉// ....␊ |
| 91 | #define␉GRF_A3␉␉6␊ |
| 92 | #define␉GRF_A4␉␉7␊ |
| 93 | #define␉GRF_A5␉␉8␊ |
| 94 | #define␉GRF_A6␉␉9␊ |
| 95 | #define␉GRF_A7␉␉10␉␉// arg 7, return value 7, caller saved␊ |
| 96 | #define␉GRF_EP␉␉11␉␉// environment ptr, caller saved␊ |
| 97 | #define␉GRF_AT␉␉12␉␉// assembler temp, caller saved␊ |
| 98 | #define␉GRF_S17␉␉13␉␉// callee-saved 17␊ |
| 99 | #define␉GRF_S16␉␉14␊ |
| 100 | #define␉GRF_S15␉␉15␊ |
| 101 | #define␉GRF_S14␉␉16␊ |
| 102 | #define␉GRF_S13␉␉17␊ |
| 103 | #define␉GRF_S12␉␉18␊ |
| 104 | #define␉GRF_S11␉␉19␊ |
| 105 | #define␉GRF_S10␉␉20␊ |
| 106 | #define␉GRF_S9␉␉21␊ |
| 107 | #define␉GRF_S8␉␉22␊ |
| 108 | #define␉GRF_S7␉␉23␊ |
| 109 | #define␉GRF_S6␉␉24␊ |
| 110 | #define␉GRF_S5␉␉25␊ |
| 111 | #define␉GRF_S4␉␉26␊ |
| 112 | #define␉GRF_S3␉␉27␊ |
| 113 | #define␉GRF_S2␉␉28␊ |
| 114 | #define␉GRF_S1␉␉29␉␉// ....␊ |
| 115 | #define␉GRF_S0␉␉30␉␉// callee-saved 0␊ |
| 116 | #define␉GRF_FP␉␉31␉␉// frame pointer, callee-saved␊ |
| 117 | ␊ |
| 118 | /*␊ |
| 119 | * FPF Register names␊ |
| 120 | */␊ |
| 121 | #define␉ft0␉␉f0␉␉// scratch reg, caller-saved␊ |
| 122 | #define␉fa0␉␉f1␉␉// fp arg 0, return 0, caller-saved␊ |
| 123 | #define␉fa1␉␉f2␉␉// fp arg 1, caller-saved␊ |
| 124 | #define␉fa2␉␉f3␉␉// fp arg 2, caller-saved␊ |
| 125 | #define␉fa3␉␉f4␊ |
| 126 | #define␉fa4␉␉f5␊ |
| 127 | #define␉fa5␉␉f6␊ |
| 128 | #define␉fa6␉␉f7␊ |
| 129 | #define␉fa7␉␉f8␊ |
| 130 | #define␉fa8␉␉f9␊ |
| 131 | #define␉fa9␉␉f10␊ |
| 132 | #define␉fa10␉␉f11␊ |
| 133 | #define␉fa11␉␉f12␊ |
| 134 | #define␉fa12␉␉f13␉␉// fp arg 12, caller-saved␊ |
| 135 | #define␉fs17␉␉f14␉␉// callee-saved 17␊ |
| 136 | #define␉fs16␉␉f15␊ |
| 137 | #define␉fs15␉␉f16␊ |
| 138 | #define␉fs14␉␉f17␊ |
| 139 | #define␉fs13␉␉f18␊ |
| 140 | #define␉fs12␉␉f19␊ |
| 141 | #define␉fs11␉␉f20␊ |
| 142 | #define␉fs10␉␉f21␊ |
| 143 | #define␉fs9␉␉f22␊ |
| 144 | #define␉fs8␉␉f23␊ |
| 145 | #define␉fs7␉␉f24␊ |
| 146 | #define␉fs6␉␉f25␊ |
| 147 | #define␉fs5␉␉f26␊ |
| 148 | #define␉fs4␉␉f27␊ |
| 149 | #define␉fs3␉␉f28␊ |
| 150 | #define␉fs2␉␉f29␊ |
| 151 | #define␉fs1␉␉f30␊ |
| 152 | #define␉fs0␉␉f31␉␉// callee-saved 0␊ |
| 153 | ␊ |
| 154 | /*␊ |
| 155 | * Conversion of FPF aliases to register numbers␊ |
| 156 | */␊ |
| 157 | #define␉FPF_FT0␉␉0␉␉// scratch reg, caller-saved␊ |
| 158 | #define␉FPF_FA0␉␉1␉␉// fp arg 0, return 0, caller-saved␊ |
| 159 | #define␉FPF_FA1␉␉2␉␉// fp arg 1, caller-saved␊ |
| 160 | #define␉FPF_FA2␉␉3␉␉// fp arg 2, caller-saved␊ |
| 161 | #define␉FPF_FA3␉␉4␊ |
| 162 | #define␉FPF_FA4␉␉5␊ |
| 163 | #define␉FPF_FA5␉␉6␊ |
| 164 | #define␉FPF_FA6␉␉7␊ |
| 165 | #define␉FPF_FA7␉␉8␊ |
| 166 | #define␉FPF_FA8␉␉9␊ |
| 167 | #define␉FPF_FA9␉␉10␊ |
| 168 | #define␉FPF_FA10␉11␊ |
| 169 | #define␉FPF_FA11␉12␊ |
| 170 | #define␉FPF_FA12␉13␉␉// fp arg 12, caller-saved␊ |
| 171 | #define␉FPF_FS17␉14␉␉// callee-saved 17␊ |
| 172 | #define␉FPF_FS16␉15␊ |
| 173 | #define␉FPF_FS15␉16␊ |
| 174 | #define␉FPF_FS14␉17␊ |
| 175 | #define␉FPF_FS13␉18␊ |
| 176 | #define␉FPF_FS12␉19␊ |
| 177 | #define␉FPF_FS11␉20␊ |
| 178 | #define␉FPF_FS10␉21␊ |
| 179 | #define␉FPF_FS9␉␉22␊ |
| 180 | #define␉FPF_FS8␉␉23␊ |
| 181 | #define␉FPF_FS7␉␉24␊ |
| 182 | #define␉FPF_FS6␉␉25␊ |
| 183 | #define␉FPF_FS5␉␉26␊ |
| 184 | #define␉FPF_FS4␉␉27␊ |
| 185 | #define␉FPF_FS3␉␉28␊ |
| 186 | #define␉FPF_FS2␉␉29␊ |
| 187 | #define␉FPF_FS1␉␉30␊ |
| 188 | #define␉FPF_FS0␉␉31␉␉// callee-saved 0␊ |
| 189 | ␊ |
| 190 | #endif␉/* __ASSEMBLER__ */␊ |
| 191 | ␊ |
| 192 | ␊ |
| 193 | /* Bitfield definition aid */␊ |
| 194 | #define␉BITS_WIDTH(msb, lsb)␉((msb)-(lsb)+1)␊ |
| 195 | #define␉BIT_WIDTH(pos)␉␉(1)␉/* mostly to record the position */␊ |
| 196 | ␊ |
| 197 | /* Mask creation */␊ |
| 198 | #define␉MKMASK(width, offset)␉(((unsigned)-1)>>(32-(width))<<(offset))␊ |
| 199 | #define␉BITSMASK(msb, lsb)␉MKMASK(BITS_WIDTH(msb, lsb), lsb & 0x1f)␊ |
| 200 | #define␉BITMASK(pos)␉␉MKMASK(BIT_WIDTH(pos), pos & 0x1f)␊ |
| 201 | ␊ |
| 202 | /* Register addresses */␊ |
| 203 | #if␉__ASSEMBLER__␊ |
| 204 | # define␉REG_ADDR(type, addr)␉(addr)␊ |
| 205 | #else␉/* ! __ASSEMBLER__ */␊ |
| 206 | # define␉REG_ADDR(type, addr)␉(*(volatile type *)(addr))␊ |
| 207 | #endif␉/* __ASSEMBLER__ */␊ |
| 208 | ␊ |
| 209 | /* Cast a register to be an unsigned */␊ |
| 210 | /* CAUTION :␉non naturally aligned foo can result into alignment traps␊ |
| 211 | *␉␉use at own risk.␊ |
| 212 | */␊ |
| 213 | #define␉CONTENTS(foo)␉(*(unsigned *) &(foo))␊ |
| 214 | ␊ |
| 215 | /* STRINGIFY -- perform all possible substitutions, then stringify */␊ |
| 216 | #define␉__STR(x)␉#x␉␉/* just a helper macro */␊ |
| 217 | #define␉STRINGIFY(x)␉__STR(x)␊ |
| 218 | ␊ |
| 219 | /* ␊ |
| 220 | * Stack pointer must always be a multiple of 16␊ |
| 221 | */␊ |
| 222 | #define␉STACK_INCR␉16␊ |
| 223 | #define␉ROUND_FRAME(x)␉((((unsigned)(x)) + STACK_INCR - 1) & ~(STACK_INCR-1))␊ |
| 224 | ␊ |
| 225 | #endif /* _ARCH_PPC_REG_HELP_H_ */␊ |
| 226 | |
