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Annotation of kernel/machdep/ppc/asm.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: #ifndef        _PPC_ASM_H_
        !            26: #define        _PPC_ASM_H_
        !            27: 
        !            28: #define ARG0 r3
        !            29: #define ARG1 r4
        !            30: #define ARG2 r5
        !            31: #define ARG3 r6
        !            32: #define ARG4 r7
        !            33: #define ARG5 r8
        !            34: #define ARG6 r9
        !            35: #define ARG7 r10
        !            36: 
        !            37: #define tmp0   r0      /* Temporary GPR remapping (603e specific) */
        !            38: #define tmp1   r1
        !            39: #define tmp2   r2
        !            40: #define tmp3   r3
        !            41: 
        !            42: /* SPR registers as taken from 603e user guide */
        !            43: 
        !            44: #define dmiss  976             /* ea that missed */
        !            45: #define dcmp   977             /* compare value for the va that missed */
        !            46: #define hash1  978             /* pointer to first hash pteg */
        !            47: #define        hash2   979             /* pointer to second hash pteg */
        !            48: #define imiss  980             /* ea that missed */
        !            49: #define icmp   981             /* compare value for the va that missed */
        !            50: #define rpa    982             /* required physical address register */
        !            51: 
        !            52: #define iabr   1010            /* instruction address breakpoint register */
        !            53: #define dabr   1013            /* data address breakpoint register */
        !            54: 
        !            55: #define CR0 cr0
        !            56: #define CR1 cr1
        !            57: #define CR2 cr2
        !            58: #define CR3 cr3
        !            59: #define CR4 cr4
        !            60: #define CR5 cr5
        !            61: #define CR6 cr6
        !            62: #define CR7 cr7
        !            63: /* Tags are placed before Immediately Following Code (IFC) for the debugger
        !            64:  * to be able to deduce where to find various registers when backtracing
        !            65:  * 
        !            66:  * We only define the values as we use them, see SVR4 ABI PowerPc Supplement
        !            67:  * for more details (defined in ELF spec).
        !            68:  */
        !            69: 
        !            70: #define TAG_NO_FRAME_USED 0x00000000
        !            71: 
        !            72: #define COPYIN_ARG0_OFFSET FM_ARG0
        !            73: 
        !            74: #define MACH_KDB 0
        !            75: 
        !            76: #define BREAKPOINT_TRAP twge   r2,r2
        !            77: 
        !            78: /* There is another definition of ALIGNMENT for .c sources */
        !            79: #ifndef __LANGUAGE_ASSEMBLY
        !            80: #define ALIGNMENT 4
        !            81: #endif /* __LANGUAGE_ASSEMBLY */
        !            82: 
        !            83: #ifndef FALIGNMENT
        !            84: #define FALIGNMENT 4 /* Align functions on words for now. Cachelines is better */
        !            85: #endif
        !            86: 
        !            87: #define LB(x,n) n
        !            88: #if    __STDC__
        !            89: #ifndef __NO_UNDERSCORES__
        !            90: #define        LCL(x)  L ## x
        !            91: #define EXT(x) _ ## x
        !            92: #define LEXT(x) _ ## x ## :
        !            93: #else
        !            94: #define        LCL(x)  .L ## x
        !            95: #define EXT(x) x
        !            96: #define LEXT(x) x ## :
        !            97: #endif
        !            98: #define LBc(x,n) n ## :
        !            99: #define LBb(x,n) n ## b
        !           100: #define LBf(x,n) n ## f
        !           101: #else /* __STDC__ */
        !           102: #ifndef __NO_UNDERSCORES__
        !           103: #define LCL(x) L/**/x
        !           104: #define EXT(x) _/**/x
        !           105: #define LEXT(x) _/**/x/**/:
        !           106: #else /* __NO_UNDERSCORES__ */
        !           107: #define        LCL(x)  .L/**/x
        !           108: #define EXT(x) x
        !           109: #define LEXT(x) x/**/:
        !           110: #endif /* __NO_UNDERSCORES__ */
        !           111: #define LBc(x,n) n/**/:
        !           112: #define LBb(x,n) n/**/b
        !           113: #define LBf(x,n) n/**/f
        !           114: #endif /* __STDC__ */
        !           115: 
        !           116: #define String .asciz
        !           117: #define Value  .word
        !           118: #define Times(a,b) (a*b)
        !           119: #define Divide(a,b) (a/b)
        !           120: 
        !           121: #define data16 .byte 0x66
        !           122: #define addr16 .byte 0x67
        !           123: 
        !           124: #define MCOUNT
        !           125: 
        !           126: #ifdef __ELF__
        !           127: #define ELF_FUNC(x)    .type x,@function
        !           128: #define ELF_DATA(x)    .type x,@object
        !           129: #define ELF_SIZE(x,s)  .size x,s
        !           130: #else
        !           131: #define ELF_FUNC(x)
        !           132: #define ELF_DATA(x)
        !           133: #define ELF_SIZE(x,s)
        !           134: #endif
        !           135: 
        !           136: #define        Entry(x,tag)    .globl EXT(x) @ ELF_FUNC(EXT(x)) @ .long tag @ .align FALIGNMENT @ LEXT(x)
        !           137: #define        ENTRY(x,tag)    Entry(x,tag) MCOUNT
        !           138: #define        ENTRY2(x,y,tag) .globl EXT(x) @ .globl EXT(y) @ \
        !           139:                        ELF_FUNC(EXT(x)) @ ELF_FUNC(EXT(y)) @ \
        !           140:                        .align FALIGNMENT @ LEXT(x) @ LEXT(y) \
        !           141:                        MCOUNT
        !           142: #if __STDC__
        !           143: #define        ASENTRY(x)      .globl x @ .align FALIGNMENT @ x ## : ELF_FUNC(x) MCOUNT
        !           144: #else
        !           145: #define        ASENTRY(x)      .globl x @ .align FALIGNMENT @ x: ELF_FUNC(x) MCOUNT
        !           146: #endif /* __STDC__ */
        !           147: 
        !           148: #define        DATA(x)         .globl EXT(x) @ ELF_DATA(EXT(x)) @ .align ALIGNMENT @ LEXT(x)
        !           149: 
        !           150: #define End(x)         ELF_SIZE(x,.-x)
        !           151: #define END(x)         End(EXT(x))
        !           152: #define ENDDATA(x)     END(x)
        !           153: #define Enddata(x)     End(x)
        !           154: 
        !           155: /* These defines are here for .c files that wish to reference global symbols
        !           156:  * within __asm__ statements. 
        !           157:  */
        !           158: #ifdef __LANGUAGE_ASSEMBLY
        !           159: #ifndef __NO_UNDERSCORES__
        !           160: #define CC_SYM_PREFIX "_"
        !           161: #else
        !           162: #define CC_SYM_PREFIX ""
        !           163: #endif /* __NO_UNDERSCORES__ */
        !           164: #endif /* __LANGUAGE_ASSEMBLY */
        !           165: 
        !           166: #endif /* _PPC_ASM_H_ */

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