| | 1 | /* |
| | 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. |
| | 7 | * |
| | 8 | * This file contains Original Code and/or Modifications of Original Code |
| | 9 | * as defined in and that are subject to the Apple Public Source License |
| | 10 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 11 | * compliance with the License. Please obtain a copy of the License at |
| | 12 | * http://www.opensource.apple.com/apsl/ and read it before using this |
| | 13 | * file. |
| | 14 | * |
| | 15 | * The Original Code and all software distributed under the License are |
| | 16 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 17 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 18 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 19 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 20 | * Please see the License for the specific language governing rights and |
| | 21 | * limitations under the License. |
| | 22 | * |
| | 23 | * @APPLE_LICENSE_HEADER_END@ |
| | 24 | */ |
| | 25 | /* |
| | 26 | * @OSF_COPYRIGHT@ |
| | 27 | */ |
| | 28 | /* |
| | 29 | * Mach Operating System |
| | 30 | * Copyright (c) 1991,1990,1989 Carnegie Mellon University |
| | 31 | * All Rights Reserved. |
| | 32 | * |
| | 33 | * Permission to use, copy, modify and distribute this software and its |
| | 34 | * documentation is hereby granted, provided that both the copyright |
| | 35 | * notice and this permission notice appear in all copies of the |
| | 36 | * software, derivative works or modified versions, and any portions |
| | 37 | * thereof, and that both notices appear in supporting documentation. |
| | 38 | * |
| | 39 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
| | 40 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR |
| | 41 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
| | 42 | * |
| | 43 | * Carnegie Mellon requests users of this software to return to |
| | 44 | * |
| | 45 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
| | 46 | * School of Computer Science |
| | 47 | * Carnegie Mellon University |
| | 48 | * Pittsburgh PA 15213-3890 |
| | 49 | * |
| | 50 | * any improvements or extensions that they make and grant Carnegie Mellon |
| | 51 | * the rights to redistribute these changes. |
| | 52 | */ |
| | 53 | |
| | 54 | #ifndef _I386_ASM_H_ |
| | 55 | #define _I386_ASM_H_ |
| | 56 | |
| | 57 | #ifdef _KERNEL |
| | 58 | #include <gprof.h> |
| | 59 | #endif /* _KERNEL */ |
| | 60 | |
| | 61 | #ifdef MACH_KERNEL |
| | 62 | #include <mach_kdb.h> |
| | 63 | #else /* !MACH_KERNEL */ |
| | 64 | #define MACH_KDB 0 |
| | 65 | #endif /* !MACH_KERNEL */ |
| | 66 | |
| | 67 | |
| | 68 | #if defined(MACH_KERNEL) || defined(_KERNEL) |
| | 69 | #include <gprof.h> |
| | 70 | #endif /* MACH_KERNEL || _KERNEL */ |
| | 71 | |
| | 72 | |
| | 73 | #define S_ARG0 4(%esp) |
| | 74 | #define S_ARG1 8(%esp) |
| | 75 | #define S_ARG2 12(%esp) |
| | 76 | #define S_ARG3 16(%esp) |
| | 77 | |
| | 78 | #define FRAME pushl %ebp; movl %esp, %ebp |
| | 79 | #define EMARF leave |
| | 80 | |
| | 81 | #define B_ARG0 8(%ebp) |
| | 82 | #define B_ARG1 12(%ebp) |
| | 83 | #define B_ARG2 16(%ebp) |
| | 84 | #define B_ARG3 20(%ebp) |
| | 85 | |
| | 86 | /* There is another definition of ALIGN for .c sources */ |
| | 87 | #ifdef ASSEMBLER |
| | 88 | #define ALIGN 2,0x90 |
| | 89 | #endif /* ASSEMBLER */ |
| | 90 | |
| | 91 | #ifndef FALIGN |
| | 92 | #define FALIGN ALIGN |
| | 93 | #endif |
| | 94 | |
| | 95 | #define LB(x,n) n |
| | 96 | #if __STDC__ |
| | 97 | #ifndef __NO_UNDERSCORES__ |
| | 98 | #define LCL(x) L ## x |
| | 99 | #define EXT(x) _ ## x |
| | 100 | #define LEXT(x) _ ## x ## : |
| | 101 | #else |
| | 102 | #define LCL(x) .L ## x |
| | 103 | #define EXT(x) x |
| | 104 | #define LEXT(x) x ## : |
| | 105 | #endif |
| | 106 | #define LBc(x,n) n ## : |
| | 107 | #define LBb(x,n) n ## b |
| | 108 | #define LBf(x,n) n ## f |
| | 109 | #else /* __STDC__ */ |
| | 110 | #ifndef __NO_UNDERSCORES__ |
| | 111 | #define LCL(x) L/**/x |
| | 112 | #define EXT(x) _/**/x |
| | 113 | #define LEXT(x) _/**/x/**/: |
| | 114 | #else /* __NO_UNDERSCORES__ */ |
| | 115 | #define LCL(x) .L/**/x |
| | 116 | #define EXT(x) x |
| | 117 | #define LEXT(x) x/**/: |
| | 118 | #endif /* __NO_UNDERSCORES__ */ |
| | 119 | #define LBc(x,n) n/**/: |
| | 120 | #define LBb(x,n) n/**/b |
| | 121 | #define LBf(x,n) n/**/f |
| | 122 | #endif /* __STDC__ */ |
| | 123 | |
| | 124 | #define SVC .byte 0x9a; .long 0; .word 0x7 |
| | 125 | |
| | 126 | #define RPC_SVC .byte 0x9a; .long 0; .word 0xf |
| | 127 | |
| | 128 | #define String .asciz |
| | 129 | #define Value .word |
| | 130 | #define Times(a,b) (a*b) |
| | 131 | #define Divide(a,b) (a/b) |
| | 132 | |
| | 133 | #define INB inb %dx, %al |
| | 134 | #define OUTB outb %al, %dx |
| | 135 | #define INL inl %dx, %eax |
| | 136 | #define OUTL outl %eax, %dx |
| | 137 | |
| | 138 | #define data16 .byte 0x66 |
| | 139 | #define addr16 .byte 0x67 |
| | 140 | |
| | 141 | #if !GPROF |
| | 142 | #define MCOUNT |
| | 143 | |
| | 144 | #elif defined(__SHARED__) |
| | 145 | #define MCOUNT ; .data;\ |
| | 146 | .align ALIGN;\ |
| | 147 | LBc(x, 8) .long 0;\ |
| | 148 | .text;\ |
| | 149 | Gpush;\ |
| | 150 | Gload;\ |
| | 151 | leal Gotoff(LBb(x,8)),%edx;\ |
| | 152 | Egaddr(%eax,_mcount_ptr);\ |
| | 153 | Gpop;\ |
| | 154 | call *(%eax); |
| | 155 | |
| | 156 | #else /* !GPROF, !__SHARED__ */ |
| | 157 | #define MCOUNT ; .data;\ |
| | 158 | .align ALIGN;\ |
| | 159 | LBc(x, 8) .long 0;\ |
| | 160 | .text;\ |
| | 161 | movl LBb(x,8),%edx;\ |
| | 162 | call *EXT(_mcount_ptr); |
| | 163 | |
| | 164 | #endif /* GPROF */ |
| | 165 | |
| | 166 | #ifdef __ELF__ |
| | 167 | #define ELF_FUNC(x) .type x,@function |
| | 168 | #define ELF_DATA(x) .type x,@object |
| | 169 | #define ELF_SIZE(x,s) .size x,s |
| | 170 | #else |
| | 171 | #define ELF_FUNC(x) |
| | 172 | #define ELF_DATA(x) |
| | 173 | #define ELF_SIZE(x,s) |
| | 174 | #endif |
| | 175 | |
| | 176 | #define Entry(x) .globl EXT(x); ELF_FUNC(EXT(x)); .align FALIGN; LEXT(x) |
| | 177 | #define ENTRY(x) Entry(x) MCOUNT |
| | 178 | #define ENTRY2(x,y) .globl EXT(x); .globl EXT(y); \ |
| | 179 | ELF_FUNC(EXT(x)); ELF_FUNC(EXT(y)); \ |
| | 180 | .align FALIGN; LEXT(x); LEXT(y) \ |
| | 181 | MCOUNT |
| | 182 | #if __STDC__ |
| | 183 | #define ASENTRY(x) .globl x; .align FALIGN; x ## : ELF_FUNC(x) MCOUNT |
| | 184 | #else |
| | 185 | #define ASENTRY(x) .globl x; .align FALIGN; x: ELF_FUNC(x) MCOUNT |
| | 186 | #endif /* __STDC__ */ |
| | 187 | |
| | 188 | #define DATA(x) .globl EXT(x); ELF_DATA(EXT(x)); .align ALIGN; LEXT(x) |
| | 189 | |
| | 190 | #define End(x) ELF_SIZE(x,.-x) |
| | 191 | #define END(x) End(EXT(x)) |
| | 192 | #define ENDDATA(x) END(x) |
| | 193 | #define Enddata(x) End(x) |
| | 194 | |
| | 195 | /* |
| | 196 | * ELF shared library accessor macros. |
| | 197 | * Gpush saves the %ebx register used for the GOT address |
| | 198 | * Gpop pops %ebx if we need a GOT |
| | 199 | * Gload loads %ebx with the GOT address if shared libraries are used |
| | 200 | * Gcall calls an external function. |
| | 201 | * Gotoff allows you to reference local labels. |
| | 202 | * Gotoff2 allows you to reference local labels with an index reg. |
| | 203 | * Gotoff3 allows you to reference local labels with an index reg & size. |
| | 204 | * Gaddr loads up a register with an address of an external item. |
| | 205 | * Gstack is the number of bytes that Gpush pushes on the stack. |
| | 206 | * |
| | 207 | * Varients of the above with E or L prefixes do EXT(name) or LCL(name) |
| | 208 | * respectively. |
| | 209 | */ |
| | 210 | |
| | 211 | #ifndef __SHARED__ |
| | 212 | #define Gpush |
| | 213 | #define Gpop |
| | 214 | #define Gload |
| | 215 | #define Gcall(func) call func |
| | 216 | #define Gotoff(lab) lab |
| | 217 | #define Gotoff2(l,r) l(r) |
| | 218 | #define Gotoff3(l,r,s) l(,r,s) |
| | 219 | #define Gaddr(to,lab) movl $lab,to |
| | 220 | #define Gcmp(lab,reg) cmpl $lab,reg |
| | 221 | #define Gmemload(lab,reg) movl lab,reg |
| | 222 | #define Gmemstore(reg,lab,tmp) movl reg,lab |
| | 223 | #define Gstack 0 |
| | 224 | |
| | 225 | #else |
| | 226 | #ifdef __ELF__ /* ELF shared libraries */ |
| | 227 | #define Gpush pushl %ebx |
| | 228 | #define Gpop popl %ebx |
| | 229 | #define Gload call 9f; 9: popl %ebx; addl $_GLOBAL_OFFSET_TABLE_+[.-9b],%ebx |
| | 230 | #define Gcall(func) call EXT(func)@PLT |
| | 231 | #define Gotoff(lab) lab@GOTOFF(%ebx) |
| | 232 | #define Gotoff2(l,r) l@GOTOFF(%ebx,r) |
| | 233 | #define Gotoff3(l,r,s) l@GOTOFF(%ebx,r,s) |
| | 234 | #define Gaddr(to,lab) movl lab@GOT(%ebx),to |
| | 235 | #define Gcmp(lab,reg) cmpl reg,lab@GOT(%ebx) |
| | 236 | #define Gmemload(lab,reg) movl lab@GOT(%ebx),reg; movl (reg),reg |
| | 237 | #define Gmemstore(reg,lab,tmp) movl lab@GOT(%ebx),tmp; movl reg,(tmp) |
| | 238 | #define Gstack 4 |
| | 239 | |
| | 240 | #else /* ROSE shared libraries */ |
| | 241 | #define Gpush |
| | 242 | #define Gpop |
| | 243 | #define Gload |
| | 244 | #define Gcall(func) call *9f; .data; .align ALIGN; 9: .long func; .text |
| | 245 | #define Gotoff(lab) lab |
| | 246 | #define Gotoff2(l,r) l(r) |
| | 247 | #define Gotoff3(l,r,s) l(,r,s) |
| | 248 | #define Gaddr(to,lab) movl 9f,to; .data; .align ALIGN; 9: .long lab; .text |
| | 249 | #define Gcmp(lab,reg) cmpl reg,9f; .data; .align ALIGN; 9: .long lab; .text |
| | 250 | #define Gmemload(lab,reg) movl 9f,reg; movl (reg),reg; .data; .align ALIGN; 9: .long lab; .text |
| | 251 | #define Gmemstore(reg,lab,tmp) movl 9f,tmp; movl reg,(tmp); .data; .align ALIGN; 9: .long lab; .text |
| | 252 | #define Gstack 0 |
| | 253 | #endif /* __ELF__ */ |
| | 254 | #endif /* __SHARED__ */ |
| | 255 | |
| | 256 | /* Egotoff is not provided, since external symbols should not use @GOTOFF |
| | 257 | relocations. */ |
| | 258 | #define Egcall(func) Gcall(EXT(func)) |
| | 259 | #define Egaddr(to,lab) Gaddr(to,EXT(lab)) |
| | 260 | #define Egcmp(lab,reg) Gcmp(EXT(lab),reg) |
| | 261 | #define Egmemload(lab,reg) Gmemload(EXT(lab),reg) |
| | 262 | #define Egmemstore(reg,lab,tmp) Gmemstore(reg,EXT(lab),tmp) |
| | 263 | |
| | 264 | #define Lgotoff(lab) Gotoff(LCL(lab)) |
| | 265 | #define Lgotoff2(l,r) Gotoff2(LCL(l),r) |
| | 266 | #define Lgotoff3(l,r,s) Gotoff3(LCL(l),r,s) |
| | 267 | #define Lgcmp(lab,reg) Gcmp(LCL(lab),reg) |
| | 268 | #define Lgmemload(lab,reg) movl Lgotoff(lab),reg |
| | 269 | #define Lgmemstore(reg,lab,tmp) movl reg,Lgotoff(lab) |
| | 270 | |
| | 271 | #ifdef ASSEMBLER |
| | 272 | #if MACH_KDB |
| | 273 | #include <ddb/stab.h> |
| | 274 | /* |
| | 275 | * This pseudo-assembler line is added so that there will be at least |
| | 276 | * one N_SO entry in the symbol stable to define the current file name. |
| | 277 | */ |
| | 278 | #endif /* MACH_KDB */ |
| | 279 | |
| | 280 | #else /* NOT ASSEMBLER */ |
| | 281 | |
| | 282 | /* These defines are here for .c files that wish to reference global symbols |
| | 283 | * within __asm__ statements. |
| | 284 | */ |
| | 285 | #ifndef __NO_UNDERSCORES__ |
| | 286 | #define CC_SYM_PREFIX "_" |
| | 287 | #else |
| | 288 | #define CC_SYM_PREFIX "" |
| | 289 | #endif /* __NO_UNDERSCORES__ */ |
| | 290 | #endif /* ASSEMBLER */ |
| | 291 | |
| | 292 | #endif /* _I386_ASM_H_ */ |
projects / apple / xnu.git / blame_incremental