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2aa62f2bc9
This set of three packages: AppPkg, StdLib, StdLibPrivateInternalFiles; contains the implementation of libraries based upon non-UEFI standards such as ISO/IEC-9899, the library portion of the C Language Standard, POSIX, etc. AppPkg contains applications that make use of the standard libraries defined in the StdLib Package. StdLib contains header (include) files and the implementations of the standard libraries. StdLibPrivateInternalFiles contains files for the exclusive use of the library implementations in StdLib. These files should never be directly referenced from applications or other code. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11600 6f19259b-4bc3-4df7-8a09-765794883524
186 lines
3.9 KiB
C
186 lines
3.9 KiB
C
/* $NetBSD: asm.h,v 1.4 2006/08/30 11:14:23 cherry Exp $ */
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/* -
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* Copyright (c) 1991,1990,1989,1994,1995,1996 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie Mellon
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* the rights to redistribute these changes.
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*/
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/*
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* Assembly coding style
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*
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* This file contains macros and register defines to
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* aid in writing more readable assembly code.
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* Some rules to make assembly code understandable by
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* a debugger are also noted.
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*/
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/*
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* Macro to make a local label name.
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*/
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#define LLABEL(name,num) L ## name ## num
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/*
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* MCOUNT
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*/
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#if defined(GPROF)
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#define MCOUNT \
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alloc out0 = ar.pfs, 8, 0, 4, 0; \
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mov out1 = r1; \
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mov out2 = b0;; \
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mov out3 = r0; \
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br.call.sptk b0 = _mcount;;
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#else
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#define MCOUNT /* nothing */
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#endif
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/*
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* ENTRY
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* Declare a global leaf function.
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* A leaf function does not call other functions.
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*/
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#define ENTRY(_name_, _n_args_) \
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.global _name_; \
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.align 16; \
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.proc _name_; \
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_name_:; \
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.regstk _n_args_, 0, 0, 0; \
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MCOUNT
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#define ENTRY_NOPROFILE(_name_, _n_args_) \
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.global _name_; \
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.align 16; \
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.proc _name_; \
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_name_:; \
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.regstk _n_args_, 0, 0, 0
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/*
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* STATIC_ENTRY
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* Declare a local leaf function.
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*/
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#define STATIC_ENTRY(_name_, _n_args_) \
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.align 16; \
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.proc _name_; \
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_name_:; \
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.regstk _n_args_, 0, 0, 0 \
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MCOUNT
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/*
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* XENTRY
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* Global alias for a leaf function, or alternate entry point
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*/
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#define XENTRY(_name_) \
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.globl _name_; \
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_name_:
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/*
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* STATIC_XENTRY
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* Local alias for a leaf function, or alternate entry point
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*/
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#define STATIC_XENTRY(_name_) \
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_name_:
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/*
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* END
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* Function delimiter
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*/
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#define END(_name_) \
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.endp _name_
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/*
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* EXPORT
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* Export a symbol
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*/
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#define EXPORT(_name_) \
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.global _name_; \
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_name_:
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/*
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* IMPORT
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* Make an external name visible, typecheck the size
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*/
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#define IMPORT(_name_, _size_) \
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/* .extern _name_,_size_ */
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/*
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* ABS
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* Define an absolute symbol
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*/
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#define ABS(_name_, _value_) \
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.globl _name_; \
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_name_ = _value_
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/*
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* BSS
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* Allocate un-initialized space for a global symbol
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*/
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#define BSS(_name_,_numbytes_) \
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.comm _name_,_numbytes_
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/*
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* MSG
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* Allocate space for a message (a read-only ascii string)
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*/
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#define ASCIZ .asciz
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#define MSG(msg,reg,label) \
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addl reg,@ltoff(label),gp;; \
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ld8 reg=[reg];; \
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.data; \
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label: ASCIZ msg; \
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.text;
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/*
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* System call glue.
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*/
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#define SYSCALLNUM(name) ___CONCAT(SYS_,name)
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#define CALLSYS_NOERROR(name) \
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{ .mmi ; \
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alloc r9 = ar.pfs, 0, 0, 8, 0 ; \
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mov r31 = ar.k5 ; \
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mov r10 = b0 ;; } \
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{ .mib ; \
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mov r8 = SYSCALLNUM(name) ; \
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mov b7 = r31 ; \
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br.call.sptk b0 = b7 ;; }
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/*
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* WEAK_ALIAS: create a weak alias (ELF only).
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*/
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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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