1 /* $NetBSD: asm.h,v 1.19 2005/12/24 22:57:26 uwe Exp $ */ 2 3 /*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)asm.h 5.5 (Berkeley) 5/7/91 35 */ 36 37 #ifndef _SH3_ASM_H_ 38 #define _SH3_ASM_H_ 39 40 #define PIC_PROLOGUE 41 #define PIC_EPILOGUE 42 #define PIC_PLT(x) x 43 #define PIC_GOT(x) x 44 #define PIC_GOTOFF(x) x 45 46 /* 47 * The old NetBSD/sh3 ELF toolchain used underscores. The new 48 * NetBSD/sh3 ELF toolchain does not. The C pre-processor 49 * defines __NO_LEADING_UNDERSCORES__ for the new ELF toolchain. 50 */ 51 52 #if defined(__ELF__) && defined(__NO_LEADING_UNDERSCORES__) 53 # define _C_LABEL(x) x 54 #else 55 #ifdef __STDC__ 56 # define _C_LABEL(x) _ ## x 57 #else 58 # define _C_LABEL(x) _/**/x 59 #endif 60 #endif 61 #define _ASM_LABEL(x) x 62 63 /* let kernels and others override entrypoint alignment */ 64 #ifndef _ALIGN_TEXT 65 # define _ALIGN_TEXT .align 2 66 #endif 67 68 #ifdef __ELF__ 69 #define _ENTRY(x) \ 70 .text ;\ 71 _ALIGN_TEXT ;\ 72 .globl x ;\ 73 .type x,@function ;\ 74 x: 75 #else /* !__ELF__ */ 76 #define _ENTRY(x) \ 77 .text ;\ 78 _ALIGN_TEXT ;\ 79 .globl x ;\ 80 x: 81 #endif /* !__ELF__ */ 82 83 #ifdef GPROF 84 #define _PROF_PROLOGUE \ 85 mov.l 1f,r1 ; \ 86 mova 2f,r0 ; \ 87 jmp @r1 ; \ 88 nop ; \ 89 .align 2 ; \ 90 1: .long __mcount ; \ 91 2: 92 #else /* !GPROF */ 93 #define _PROF_PROLOGUE 94 #endif /* !GPROF */ 95 96 #define ENTRY(y) _ENTRY(_C_LABEL(y)) _PROF_PROLOGUE 97 #define NENTRY(y) _ENTRY(_C_LABEL(y)) 98 #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)) _PROF_PROLOGUE 99 100 #ifdef __ELF__ 101 #define ALTENTRY(name) \ 102 .globl _C_LABEL(name) ;\ 103 .type _C_LABEL(name),@function ;\ 104 _C_LABEL(name): 105 #else 106 #define ALTENTRY(name) \ 107 .globl _C_LABEL(name) ;\ 108 _C_LABEL(name): 109 #endif 110 111 #define ASMSTR .asciz 112 113 #ifdef __ELF__ 114 #define RCSID(x) .section .ident; .asciz x; .previous 115 #else 116 #define RCSID(x) .text; .asciz x 117 #endif 118 119 #ifdef NO_KERNEL_RCSIDS 120 #define __KERNEL_RCSID(_n, _s) /* nothing */ 121 #else 122 #define __KERNEL_RCSID(_n, _s) RCSID(_s) 123 #endif 124 125 #ifdef __ELF__ 126 #define WEAK_ALIAS(alias,sym) \ 127 .weak _C_LABEL(alias); \ 128 _C_LABEL(alias) = _C_LABEL(sym) 129 #endif 130 131 #define WARN_REFERENCES(_sym,_msg) \ 132 .section .gnu.warning._sym; .ascii _msg; .previous 133 134 #endif /* !_SH3_ASM_H_ */ 135