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Diffstat (limited to 'libbsd/include/arch/arm/machine/asm.h')
| -rw-r--r-- | libbsd/include/arch/arm/machine/asm.h | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/libbsd/include/arch/arm/machine/asm.h b/libbsd/include/arch/arm/machine/asm.h new file mode 100644 index 0000000..9b68afa --- /dev/null +++ b/libbsd/include/arch/arm/machine/asm.h @@ -0,0 +1,168 @@ +/* $NetBSD: asm.h,v 1.12 2008/08/29 19:00:25 matt Exp $ */ + +/* + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * William Jolitz. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * from: @(#)asm.h 5.5 (Berkeley) 5/7/91 + */ + +#ifndef _ARM32_ASM_H_ +#define _ARM32_ASM_H_ + +#include <arm/cdefs.h> + +#define _C_LABEL(x) x +#define _ASM_LABEL(x) x + +#ifdef __STDC__ +# define __CONCAT(x,y) x ## y +# define __STRING(x) #x +#else +# define __CONCAT(x,y) x/**/y +# define __STRING(x) "x" +#endif + +#ifndef _ALIGN_TEXT +# define _ALIGN_TEXT .align 0 +#endif + +/* + * gas/arm uses @ as a single comment character and thus cannot be used here + * Instead it recognised the # instead of an @ symbols in .type directives + * We define a couple of macros so that assembly code will not be dependant + * on one or the other. + */ +#define _ASM_TYPE_FUNCTION %function +#define _ASM_TYPE_OBJECT %object +#ifdef __thumb__ +#define _ENTRY(x) \ + .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; .thumb_func; x: +#else +#define _ENTRY(x) \ + .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x: +#endif +#define _END(x) .size x,.-x + +#ifdef GPROF +# define _PROF_PROLOGUE \ + mov ip, lr; bl __mcount +#else +# define _PROF_PROLOGUE +#endif + +#define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE +#define ENTRY_NP(y) _ENTRY(_C_LABEL(y)) +#define END(y) _END(_C_LABEL(y)) +#define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE +#define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y)) +#define ASEND(y) _END(_ASM_LABEL(y)) + +#define ASMSTR .asciz + +#if defined(PIC) +#ifdef __thumb__ +#define PLT_SYM(x) x +#define GOT_SYM(x) PIC_SYM(x, GOTOFF) +#define GOT_GET(x,got,sym) \ + ldr x, sym; \ + add x, got; \ + ldr x, [x] +#else +#define PLT_SYM(x) PIC_SYM(x, PLT) +#define GOT_SYM(x) PIC_SYM(x, GOT) +#define GOT_GET(x,got,sym) \ + ldr x, sym; \ + ldr x, [x, got] +#endif /* __thumb__ */ + +#define GOT_INIT(got,gotsym,pclabel) \ + ldr got, gotsym; \ + add got, got, pc; \ + pclabel: +#define GOT_INITSYM(gotsym,pclabel) \ + gotsym: .word _C_LABEL(_GLOBAL_OFFSET_TABLE_) + (. - (pclabel+4)) + +#ifdef __STDC__ +#define PIC_SYM(x,y) x ## ( ## y ## ) +#else +#define PIC_SYM(x,y) x/**/(/**/y/**/) +#endif + +#else +#define PLT_SYM(x) x +#define GOT_SYM(x) x +#define GOT_GET(x,got,sym) \ + ldr x, sym; +#define GOT_INIT(got,gotsym,pclabel) +#define GOT_INITSYM(gotsym,pclabel) +#define PIC_SYM(x,y) x +#endif /* PIC */ + +#define RCSID(x) .pushsection ".ident"; .asciz x; .popsection + +#define WEAK_ALIAS(alias,sym) \ + .weak alias; \ + alias = sym + +/* + * STRONG_ALIAS: create a strong alias. + */ +#define STRONG_ALIAS(alias,sym) \ + .globl alias; \ + alias = sym + +#define WARN_REFERENCES(sym,msg) \ + .stabs msg,30,0,0,0 ; \ + .stabs __STRING(_C_LABEL(sym)),1,0,0,0 + +#ifdef __thumb__ +# define XPUSH push +# define XPOP pop +# define XPOPRET pop {pc} +#else +# define XPUSH stmfd sp!, +# define XPOP ldmfd sp!, +# ifdef _ARM_ARCH_5 +# define XPOPRET ldmfd sp!, {pc} +# else +# define XPOPRET ldmfd sp!, {lr}; mov pc, lr +# endif +#endif + +#if defined (_ARM_ARCH_4T) +# define RET bx lr +# define RETc(c) __CONCAT(bx,c) lr +#else +# define RET mov pc, lr +# define RETc(c) __CONCAT(mov,c) pc, lr +#endif + +#endif /* !_ARM_ASM_H_ */ |