b1c4ba4ab6
Due to the ABI we are using we have to use the earm architecture moniker for the build system to behave correctly. This involves then some headers to move around. There is also a few related Makefile updates as well as minor source code corrections.
191 lines
5 KiB
C
191 lines
5 KiB
C
/* $NetBSD: asm.h,v 1.16 2012/09/01 14:46:25 matt Exp $ */
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/*
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)asm.h 5.5 (Berkeley) 5/7/91
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*/
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#ifndef _ARM32_ASM_H_
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#define _ARM32_ASM_H_
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#include <arm/cdefs.h>
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#define __BIT(n) (1 << (n))
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#define __BITS(hi,lo) ((~((~0)<<((hi)+1)))&((~0)<<(lo)))
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#define _C_LABEL(x) x
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#define _ASM_LABEL(x) x
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#ifdef __STDC__
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# define __CONCAT(x,y) x ## y
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# define __STRING(x) #x
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#else
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# define __CONCAT(x,y) x/**/y
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# define __STRING(x) "x"
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#endif
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#ifndef _ALIGN_TEXT
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# define _ALIGN_TEXT .align 0
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#endif
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/*
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* gas/arm uses @ as a single comment character and thus cannot be used here
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* Instead it recognised the # instead of an @ symbols in .type directives
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* We define a couple of macros so that assembly code will not be dependent
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* on one or the other.
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*/
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#define _ASM_TYPE_FUNCTION %function
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#define _ASM_TYPE_OBJECT %object
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#ifdef __thumb__
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#define _ENTRY(x) \
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.text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; .thumb_func; x:
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#else
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#define _ENTRY(x) \
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.text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x:
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#endif
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#define _END(x) .size x,.-x
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#ifdef GPROF
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# define _PROF_PROLOGUE \
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mov ip, lr; bl __mcount
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#else
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# define _PROF_PROLOGUE
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#endif
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#define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
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#define ENTRY_NP(y) _ENTRY(_C_LABEL(y))
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#define END(y) _END(_C_LABEL(y))
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#define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
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#define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y))
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#define ASEND(y) _END(_ASM_LABEL(y))
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#if defined(__minix)
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#define _LABEL(x) \
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.globl x; x:
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#define LABEL(y) _LABEL(_C_LABEL(y))
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#endif /* defined(__minix) */
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#define ASMSTR .asciz
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#if defined(PIC)
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#ifdef __thumb__
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#define PLT_SYM(x) x
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#define GOT_SYM(x) PIC_SYM(x, GOTOFF)
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#define GOT_GET(x,got,sym) \
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ldr x, sym; \
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add x, got; \
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ldr x, [x]
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#else
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#define PLT_SYM(x) PIC_SYM(x, PLT)
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#define GOT_SYM(x) PIC_SYM(x, GOT)
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#define GOT_GET(x,got,sym) \
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ldr x, sym; \
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ldr x, [x, got]
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#endif /* __thumb__ */
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#define GOT_INIT(got,gotsym,pclabel) \
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ldr got, gotsym; \
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add got, got, pc; \
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pclabel:
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#define GOT_INITSYM(gotsym,pclabel) \
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gotsym: .word _C_LABEL(_GLOBAL_OFFSET_TABLE_) + (. - (pclabel+4))
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#ifdef __STDC__
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#define PIC_SYM(x,y) x ## ( ## y ## )
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#else
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#define PIC_SYM(x,y) x/**/(/**/y/**/)
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#endif
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#else
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#define PLT_SYM(x) x
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#define GOT_SYM(x) x
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#define GOT_GET(x,got,sym) \
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ldr x, sym;
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#define GOT_INIT(got,gotsym,pclabel)
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#define GOT_INITSYM(gotsym,pclabel)
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#define PIC_SYM(x,y) x
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#endif /* PIC */
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#define RCSID(x) .pushsection ".ident"; .asciz x; .popsection
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#define WEAK_ALIAS(alias,sym) \
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.weak alias; \
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alias = sym
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/*
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* STRONG_ALIAS: create a strong alias.
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*/
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#define STRONG_ALIAS(alias,sym) \
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.globl alias; \
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alias = sym
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#ifdef __STDC__
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#define WARN_REFERENCES(sym,msg) \
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.pushsection .gnu.warning. ## sym; \
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.ascii msg; \
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.popsection
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#else
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#define WARN_REFERENCES(sym,msg) \
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.pushsection .gnu.warning./**/sym; \
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.ascii msg; \
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.popsection
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#endif /* __STDC__ */
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#ifdef __thumb__
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# define XPUSH push
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# define XPOP pop
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# define XPOPRET pop {pc}
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#else
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# define XPUSH stmfd sp!,
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# define XPOP ldmfd sp!,
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# ifdef _ARM_ARCH_5
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# define XPOPRET ldmfd sp!, {pc}
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# else
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# define XPOPRET ldmfd sp!, {lr}; mov pc, lr
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# endif
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#endif
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#if defined (_ARM_ARCH_4T)
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# define RET bx lr
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# define RETc(c) __CONCAT(bx,c) lr
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#else
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# define RET mov pc, lr
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# define RETc(c) __CONCAT(mov,c) pc, lr
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#endif
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#ifdef __minix
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#define IMPORT(sym) \
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.extern _C_LABEL(sym)
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#endif
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#endif /* !_ARM_ASM_H_ */
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