c3fc9df84a
* Also change _orig to _intr for clarity
* Cleaned up {IPC,KER}VEC
* Renamed _minix_kernel_info_struct to get_minix_kerninfo
* Merged _senda.S into _ipc.S
* Moved into separate files get_minix_kerninfo and _do_kernel_call
* Adapted do_kernel_call to follow same _ convention as ipc functions
* Drop patches in libc/net/send.c and libc/include/namespace.h
Change-Id: If4ea21ecb65435170d7d87de6c826328e84c18d0
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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