sys/powerpc/include/asm.h

   1 /*-
   2  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
   3  * Copyright (C) 1995, 1996 TooLs GmbH.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by TooLs GmbH.
  17  * 4. The name of TooLs GmbH may not be used to endorse or promote products
  18  *    derived from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
  21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  23  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  26  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  27  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  28  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  29  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  *
  31  *      $NetBSD: asm.h,v 1.6.18.1 2000/07/25 08:37:14 kleink Exp $
  32  * $FreeBSD$
  33  */
  34
  35 #ifndef _MACHINE_ASM_H_
  36 #define _MACHINE_ASM_H_
  37
  38 #include <sys/cdefs.h>
  39
  40 #if defined(PIC) && !defined(__powerpc64__)
  41 #define PIC_PROLOGUE    XXX
  42 #define PIC_EPILOGUE    XXX
  43 #define PIC_PLT(x)      x@plt
  44 #ifdef  __STDC__
  45 #define PIC_GOT(x)      XXX
  46 #else   /* not __STDC__ */
  47 #define PIC_GOT(x)      XXX
  48 #endif  /* __STDC__ */
  49 #else
  50 #define PIC_PROLOGUE
  51 #define PIC_EPILOGUE
  52 #define PIC_PLT(x)      x
  53 #define PIC_GOT(x)      x
  54 #endif
  55
  56 #define CNAME(csym)             csym
  57 #define ASMNAME(asmsym)         asmsym
  58 #ifdef __powerpc64__
  59 #define HIDENAME(asmsym)        __CONCAT(_,asmsym)
  60 #else
  61 #define HIDENAME(asmsym)        __CONCAT(.,asmsym)
  62 #endif
  63
  64 #if !defined(_CALL_ELF) || _CALL_ELF == 1
  65 #ifdef _KERNEL
  66 /* ELFv1 kernel uses global dot symbols */
  67 #define DOT_LABEL(name)         __CONCAT(.,name)
  68 #define TYPE_ENTRY(name)        .size   name,24; \
  69                                 .type   DOT_LABEL(name),@function; \
  70                                 .globl  DOT_LABEL(name);
  71 #define END_SIZE(name)          .size   DOT_LABEL(name),.-DOT_LABEL(name);
  72 #else /* !_KERNEL */
  73 /* ELFv1 user code uses local function entry points */
  74 #define DOT_LABEL(name)         __CONCAT(.L.,name)
  75 #define TYPE_ENTRY(name)        .type   name,@function;
  76 #define END_SIZE(name)          .size   name,.-DOT_LABEL(name);
  77 #endif /* _KERNEL */
  78 #else
  79 /* ELFv2 doesn't have any of this complication */
  80 #define DOT_LABEL(name)         name
  81 #define TYPE_ENTRY(name)        .type   name,@function;
  82 #define END_SIZE(name)          .size   name,.-DOT_LABEL(name);
  83 #endif
  84
  85 #define _GLOBAL(name) \
  86         .data; \
  87         .p2align 2; \
  88         .globl  name; \
  89         name:
  90
  91 #ifdef __powerpc64__
  92 #define TOC_NAME_FOR_REF(name)  __CONCAT(.L,name)
  93 #define TOC_REF(name)   TOC_NAME_FOR_REF(name)@toc
  94 #define TOC_ENTRY(name) \
  95         .section ".toc","aw"; \
  96         TOC_NAME_FOR_REF(name): \
  97         .tc name[TC],name
  98 #endif
  99
 100 #ifdef __powerpc64__
 101
 102 #if !defined(_CALL_ELF) || _CALL_ELF == 1
 103 #define _ENTRY(name) \
 104         .section ".text"; \
 105         .p2align 2; \
 106         .globl  name; \
 107         .section ".opd","aw"; \
 108         .p2align 3; \
 109         name: \
 110         .quad   DOT_LABEL(name),.TOC.@tocbase,0; \
 111         .previous; \
 112         .p2align 4; \
 113         TYPE_ENTRY(name) \
 114 DOT_LABEL(name):
 115 #else
 116 #define _ENTRY(name) \
 117         .text; \
 118         .p2align 4; \
 119         .globl  name; \
 120         .type   name,@function; \
 121 name: \
 122         addis   %r2, %r12, (.TOC.-name)@ha; \
 123         addi    %r2, %r2, (.TOC.-name)@l; \
 124         .localentry name, .-name;
 125 #endif
 126
 127 #define _END(name) \
 128         .long   0; \
 129         .byte   0,0,0,0,0,0,0,0; \
 130         END_SIZE(name)
 131
 132 #define LOAD_ADDR(reg, var) \
 133         lis     reg, var@highest; \
 134         ori     reg, reg, var@higher; \
 135         rldicr  reg, reg, 32, 31; \
 136         oris    reg, reg, var@h; \
 137         ori     reg, reg, var@l;
 138 #else /* !__powerpc64__ */
 139 #define _ENTRY(name) \
 140         .text; \
 141         .p2align 4; \
 142         .globl  name; \
 143         .type   name,@function; \
 144         name:
 145 #define _END(name)
 146
 147 #define LOAD_ADDR(reg, var) \
 148         lis     reg, var@ha; \
 149         ori     reg, reg, var@l;
 150 #endif /* __powerpc64__ */
 151
 152 #if defined(PROF) || (defined(_KERNEL) && defined(GPROF))
 153 # ifdef __powerpc64__
 154 #   define      _PROF_PROLOGUE  mflr 0;                                 \
 155                                 std 3,48(1);                            \
 156                                 std 4,56(1);                            \
 157                                 std 5,64(1);                            \
 158                                 std 0,16(1);                            \
 159                                 stdu 1,-112(1);                         \
 160                                 bl _mcount;                             \
 161                                 nop;                                    \
 162                                 ld 0,112+16(1);                         \
 163                                 ld 3,112+48(1);                         \
 164                                 ld 4,112+56(1);                         \
 165                                 ld 5,112+64(1);                         \
 166                                 mtlr 0;                                 \
 167                                 addi 1,1,112
 168 # else
 169 #   define      _PROF_PROLOGUE  mflr 0; stw 0,4(1); bl _mcount
 170 # endif
 171 #else
 172 # define        _PROF_PROLOGUE
 173 #endif
 174
 175 #define ASENTRY(y)      _ENTRY(ASMNAME(y)); _PROF_PROLOGUE
 176 #define END(y)          _END(CNAME(y))
 177 #define ENTRY(y)        _ENTRY(CNAME(y)); _PROF_PROLOGUE
 178 #define GLOBAL(y)       _GLOBAL(CNAME(y))
 179
 180 #define ASENTRY_NOPROF(y)       _ENTRY(ASMNAME(y))
 181 #define ENTRY_NOPROF(y)         _ENTRY(CNAME(y))
 182
 183 #define ASMSTR          .asciz
 184
 185 #define RCSID(x)        .text; .asciz x
 186
 187 #undef __FBSDID
 188 #if !defined(lint) && !defined(STRIP_FBSDID)
 189 #define __FBSDID(s)     .ident s
 190 #else
 191 #define __FBSDID(s)     /* nothing */
 192 #endif /* not lint and not STRIP_FBSDID */
 193
 194 #define WEAK_REFERENCE(sym, alias)                              \
 195         .weak alias;                                            \
 196         .equ alias,sym
 197
 198 #ifdef __STDC__
 199 #define WARN_REFERENCES(_sym,_msg)                              \
 200         .section .gnu.warning. ## _sym ; .ascii _msg ; .text
 201 #else
 202 #define WARN_REFERENCES(_sym,_msg)                              \
 203         .section .gnu.warning./**/_sym ; .ascii _msg ; .text
 204 #endif /* __STDC__ */
 205
 206 #endif /* !_MACHINE_ASM_H_ */