221 lines
4.2 KiB
C
221 lines
4.2 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 1995, 1996, 1997, 1999, 2001 by Ralf Baechle
|
|
* Copyright (C) 1999 by Silicon Graphics, Inc.
|
|
* Copyright (C) 2001 MIPS Technologies, Inc.
|
|
* Copyright (C) 2002 Maciej W. Rozycki
|
|
*
|
|
* Some useful macros for MIPS assembler code
|
|
*
|
|
* Some of the routines below contain useless nops that will be optimized
|
|
* away by gas in -O mode. These nops are however required to fill delay
|
|
* slots in noreorder mode.
|
|
*/
|
|
#ifndef __ASM_H__
|
|
#define __ASM_H__
|
|
|
|
/*
|
|
* LEAF - declare leaf routine
|
|
*/
|
|
#define LEAF(symbol) \
|
|
.globl symbol; \
|
|
.align 2; \
|
|
.type symbol,@function; \
|
|
.ent symbol,0; \
|
|
symbol: .frame sp,0,ra
|
|
|
|
/*
|
|
* NESTED - declare nested routine entry point
|
|
*/
|
|
#define NESTED(symbol, framesize, rpc) \
|
|
.globl symbol; \
|
|
.align 2; \
|
|
.type symbol,@function; \
|
|
.ent symbol,0; \
|
|
symbol: .frame sp, framesize, rpc
|
|
|
|
/*
|
|
* END - mark end of function
|
|
*/
|
|
#define END(function) \
|
|
.end function; \
|
|
.size function,.-function
|
|
|
|
/*
|
|
* EXPORT - export definition of symbol
|
|
*/
|
|
#define EXPORT(symbol) \
|
|
.globl symbol; \
|
|
symbol:
|
|
|
|
/*
|
|
* FEXPORT - export definition of a function symbol
|
|
*/
|
|
#define FEXPORT(symbol) \
|
|
.globl symbol; \
|
|
.type symbol,@function; \
|
|
symbol:
|
|
|
|
/*
|
|
* Global data declaration with size.
|
|
*/
|
|
#define EXPORTS(name,sz) \
|
|
.globl name; \
|
|
.type name,@object; \
|
|
.size name,sz; \
|
|
name:
|
|
|
|
/*
|
|
* Weak data declaration with size.
|
|
*/
|
|
#define WEXPORT(name,sz) \
|
|
.weakext name; \
|
|
.type name,@object; \
|
|
.size name,sz; \
|
|
name:
|
|
|
|
/*
|
|
* Global data reference with size.
|
|
*/
|
|
#define IMPORT(name, size) \
|
|
.extern name,size
|
|
|
|
/*
|
|
* Global zeroed data.
|
|
*/
|
|
#define BSS(name,size) \
|
|
.type name,@object; \
|
|
.comm name,size
|
|
|
|
/*
|
|
* Local zeroed data.
|
|
*/
|
|
#define LBSS(name,size) \
|
|
.lcomm name,size
|
|
|
|
|
|
/*
|
|
* ABS - export absolute symbol
|
|
*/
|
|
#define ABS(symbol,value) \
|
|
.globl symbol; \
|
|
symbol = value
|
|
|
|
|
|
#define TEXT(msg) \
|
|
.pushsection .data; \
|
|
8: .asciiz msg; \
|
|
.popsection;
|
|
|
|
|
|
#define ENTRY(name) \
|
|
.globl name; \
|
|
.align 2; \
|
|
.ent name,0; \
|
|
name##:
|
|
|
|
/*
|
|
* Macros to handle different pointer/register sizes for 32/64-bit code
|
|
*/
|
|
|
|
/*
|
|
* Size of a register
|
|
*/
|
|
#define SZREG 4
|
|
|
|
|
|
/*
|
|
* Use the following macros in assemblercode to load/store registers,
|
|
* pointers etc.
|
|
*/
|
|
#define REG_S sw
|
|
#define REG_L lw
|
|
#define REG_SUBU subu
|
|
#define REG_ADDU addu
|
|
|
|
|
|
/*
|
|
* How to add/sub/load/store/shift C int variables.
|
|
*/
|
|
#define INT_ADD add
|
|
#define INT_ADDU addu
|
|
#define INT_ADDI addi
|
|
#define INT_ADDIU addiu
|
|
#define INT_SUB sub
|
|
#define INT_SUBU subu
|
|
#define INT_L lw
|
|
#define INT_S sw
|
|
#define INT_SLL sll
|
|
#define INT_SLLV sllv
|
|
#define INT_SRL srl
|
|
#define INT_SRLV srlv
|
|
#define INT_SRA sra
|
|
#define INT_SRAV srav
|
|
|
|
|
|
|
|
/*
|
|
* How to add/sub/load/store/shift C long variables.
|
|
*/
|
|
#define LONG_ADD add
|
|
#define LONG_ADDU addu
|
|
#define LONG_ADDI addi
|
|
#define LONG_ADDIU addiu
|
|
#define LONG_SUB sub
|
|
#define LONG_SUBU subu
|
|
#define LONG_L lw
|
|
#define LONG_S sw
|
|
#define LONG_SLL sll
|
|
#define LONG_SLLV sllv
|
|
#define LONG_SRL srl
|
|
#define LONG_SRLV srlv
|
|
#define LONG_SRA sra
|
|
#define LONG_SRAV srav
|
|
|
|
#define LONG .word
|
|
#define LONGSIZE 4
|
|
#define LONGMASK 3
|
|
#define LONGLOG 2
|
|
|
|
|
|
|
|
/*
|
|
* How to add/sub/load/store/shift pointers.
|
|
*/
|
|
#define PTR_ADD add
|
|
#define PTR_ADDU addu
|
|
#define PTR_ADDI addi
|
|
#define PTR_ADDIU addiu
|
|
#define PTR_SUB sub
|
|
#define PTR_SUBU subu
|
|
#define PTR_L lw
|
|
#define PTR_S sw
|
|
#define PTR_LA la
|
|
#define PTR_SLL sll
|
|
#define PTR_SLLV sllv
|
|
#define PTR_SRL srl
|
|
#define PTR_SRLV srlv
|
|
#define PTR_SRA sra
|
|
#define PTR_SRAV srav
|
|
|
|
#define PTR_SCALESHIFT 2
|
|
|
|
#define PTR .word
|
|
#define PTRSIZE 4
|
|
#define PTRLOG 2
|
|
|
|
|
|
/*
|
|
* Some cp0 registers were extended to 64bit for MIPS III.
|
|
*/
|
|
#define MFC0 mfc0
|
|
#define MTC0 mtc0
|
|
|
|
|
|
#define SSNOP sll zero, zero, 1
|
|
|
|
#endif /* end of __ASM_H__ */
|