1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)DEFS.h 5.1 (Berkeley) 4/23/90 37 * $FreeBSD: src/sys/amd64/include/asm.h,v 1.14 2003/06/02 05:59:35 peter Exp $ 38 */ 39 40 #ifndef _CPU_ASM_H_ 41 #define _CPU_ASM_H_ 42 43 #include <sys/cdefs.h> 44 45 #ifdef PIC 46 #define PIC_PLT(x) x@PLT 47 #define PIC_GOT(x) x@GOTPCREL(%rip) 48 #else 49 #define PIC_PLT(x) x 50 #define PIC_GOT(x) x 51 #endif 52 53 /* 54 * CNAME and HIDENAME manage the relationship between symbol names in C 55 * and the equivalent assembly language names. CNAME is given a name as 56 * it would be used in a C program. It expands to the equivalent assembly 57 * language name. HIDENAME is given an assembly-language name, and expands 58 * to a possibly-modified form that will be invisible to C programs. 59 */ 60 #define CNAME(csym) csym 61 #define HIDENAME(asmsym) .asmsym 62 63 /* XXX should use .p2align 4,0x90 for -m486. */ 64 #define _START_ENTRY .text; .p2align 2,0x90 65 66 #define _ENTRY(x) _START_ENTRY; \ 67 .globl CNAME(x); .type CNAME(x),@function; CNAME(x): 68 69 #ifdef PROF 70 #define ALTENTRY(x) _ENTRY(x); \ 71 call PIC_PLT(HIDENAME(mcount)); \ 72 jmp 9f 73 #define ENTRY(x) _ENTRY(x); \ 74 call PIC_PLT(HIDENAME(mcount)); \ 75 9: 76 #else 77 #define ALTENTRY(x) _ENTRY(x) 78 #define ENTRY(x) _ENTRY(x) 79 #endif 80 81 #define END(x) .size x, . - x 82 83 #define RCSID(x) .text; .asciz x 84 85 #endif /* !_CPU_ASM_H_ */ 86