diff options
Diffstat (limited to 'sys/ia64/include/asm.h')
| -rw-r--r-- | sys/ia64/include/asm.h | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/sys/ia64/include/asm.h b/sys/ia64/include/asm.h new file mode 100644 index 0000000..4d20be3 --- /dev/null +++ b/sys/ia64/include/asm.h @@ -0,0 +1,257 @@ +/* $FreeBSD$ */ +/* From: NetBSD: asm.h,v 1.18 1997/11/03 04:22:06 ross Exp */ + +/* + * Copyright (c) 1991,1990,1989,1994,1995,1996 Carnegie Mellon University + * All Rights Reserved. + * + * Permission to use, copy, modify and distribute this software and its + * documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR + * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie Mellon + * the rights to redistribute these changes. + */ + +/* + * Assembly coding style + * + * This file contains macros and register defines to + * aid in writing more readable assembly code. + * Some rules to make assembly code understandable by + * a debugger are also noted. + * + * The document + * + * "ALPHA Calling Standard", DEC 27-Apr-90 + * + * defines (a superset of) the rules and conventions + * we use. While we make no promise of adhering to + * such standard and its evolution (esp where we + * can get faster code paths) it is certainly intended + * that we be interoperable with such standard. + * + * In this sense, this file is a proper part of the + * definition of the (software) Alpha architecture. + */ + +/* + * Macro to make a local label name. + */ +#define LLABEL(name,num) L ## name ## num + +/* + * MCOUNT + */ + +#if !defined(GPROF) && !defined(PROF) +#define MCOUNT /* nothing */ +#else +#define MCOUNT \ + .set noat; \ + jsr at_reg,_mcount; \ + .set at +#endif + +/* + * LEAF + * Declare a global leaf function. + * A leaf function does not call other functions. + */ +#define LEAF(_name_, _n_args_) \ + .global _name_; \ + .proc _name_; \ +_name_:; \ + .regstk _n_args_, 0, 0, 0 \ + MCOUNT + +#define LEAF_NOPROFILE(_name_, _n_args_) \ + .global _name_; \ + .proc _name_; \ +_name_:; \ + .regstk _n_args_, 0, 0, 0 + +/* + * STATIC_LEAF + * Declare a local leaf function. + */ +#define STATIC_LEAF(_name_, _n_args_) \ + .proc _name_; \ +_name_:; \ + .regstk _n_args_, 0, 0, 0 \ + MCOUNT +/* + * XLEAF + * Global alias for a leaf function, or alternate entry point + */ +#define XLEAF(_name_) \ + .globl _name_; \ +_name_: + +/* + * STATIC_XLEAF + * Local alias for a leaf function, or alternate entry point + */ +#define STATIC_XLEAF(_name_) \ +_name_: + +/* + * NESTED + * Declare a (global) nested function + * A nested function calls other functions and needs + * to use alloc to save registers. + */ +#define NESTED(_name_,_n_args_,_n_locals_,_n_outputs_, \ + _pfs_reg_,_rp_reg_) \ + .globl _name_; \ + .proc _name_; \ +_name_:; \ + alloc _pfs_reg_=ar.pfs,_n_args_,_n_locals_,_n_outputs_,0;; \ + mov _rp_reg_=rp \ + MCOUNT + +#define NESTED_NOPROFILE(_name_,_n_args_,_n_locals_,_n_outputs_, \ + _pfs_reg_,_rp_reg_) \ + .globl _name_; \ + .proc _name_; \ +_name_:; \ + alloc _pfs_reg_=ar.pfs,_n_args_,_n_locals_,_n_outputs_,0;; \ + mov _rp_reg_=rp + +/* + * STATIC_NESTED + * Declare a local nested function. + */ +#define STATIC_NESTED(_name_,_n_args_,_n_locals_,_n_outputs_, \ + _pfs_reg_,_rp_reg_) \ + .proc _name_; \ +_name_:; \ + alloc _pfs_reg_=ar.pfs,_n_args_,_n_locals_,_n_outputs_,0;; \ + mov _rp_reg_=rp;; \ + MCOUNT + +/* + * XNESTED + * Same as XLEAF, for a nested function. + */ +#define XNESTED(_name_) \ + .globl _name_; \ +_name_: + + +/* + * STATIC_XNESTED + * Same as STATIC_XLEAF, for a nested function. + */ +#define STATIC_XNESTED(_name_) \ +_name_: + + +/* + * END + * Function delimiter + */ +#define END(_name_) \ + .endp _name_ + + +/* + * EXPORT + * Export a symbol + */ +#define EXPORT(_name_) \ + .global _name_; \ +_name_: + + +/* + * IMPORT + * Make an external name visible, typecheck the size + */ +#define IMPORT(_name_, _size_) \ + /* .extern _name_,_size_ */ + + +/* + * ABS + * Define an absolute symbol + */ +#define ABS(_name_, _value_) \ + .globl _name_; \ +_name_ = _value_ + + +/* + * BSS + * Allocate un-initialized space for a global symbol + */ +#define BSS(_name_,_numbytes_) \ + .comm _name_,_numbytes_ + + +/* + * MSG + * Allocate space for a message (a read-only ascii string) + */ +#define ASCIZ .asciz +#define MSG(msg,reg,label) \ + lda reg, label; \ + .data; \ +label: ASCIZ msg; \ + .text; + +/* + * System call glue. + */ +#define SYSCALLNUM(name) \ + SYS_ ## name + +#define CALLSYS_NOERROR(name) \ + mov r15=SYSCALLNUM(name); \ + break 0x100000 ;; + +/* + * WEAK_ALIAS: create a weak alias (ELF only). + */ +#ifdef __ELF__ +#define WEAK_ALIAS(alias,sym) \ + .weak alias; \ + alias = sym +#endif + +/* + * Kernel RCS ID tag and copyright macros + */ + +#ifdef _KERNEL + +#ifdef __ELF__ +#define __KERNEL_SECTIONSTRING(_sec, _str) \ + .section _sec ; .asciz _str ; .text +#else /* __ELF__ */ +#define __KERNEL_SECTIONSTRING(_sec, _str) \ + .data ; .asciz _str ; .align 3 ; .text +#endif /* __ELF__ */ + +#define __KERNEL_RCSID(_n, _s) __KERNEL_SECTIONSTRING(.ident, _s) +#define __KERNEL_COPYRIGHT(_n, _s) __KERNEL_SECTIONSTRING(.copyright, _s) + +#ifdef NO_KERNEL_RCSIDS +#undef __KERNEL_RCSID +#define __KERNEL_RCSID(_n, _s) /* nothing */ +#endif + +#endif /* _KERNEL */ |
