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- /*
- * 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_ASM_H
- #define __ASM_ASM_H
- #include <asm/sgidefs.h>
- #ifndef CAT
- #ifdef __STDC__
- #define __CAT(str1, str2) str1##str2
- #else
- #define __CAT(str1, str2) str1/**/str2
- #endif
- #define CAT(str1, str2) __CAT(str1, str2)
- #endif
- /*
- * PIC specific declarations
- * Not used for the kernel but here seems to be the right place.
- */
- #ifdef __PIC__
- #define CPRESTORE(register) \
- .cprestore register
- #define CPADD(register) \
- .cpadd register
- #define CPLOAD(register) \
- .cpload register
- #else
- #define CPRESTORE(register)
- #define CPADD(register)
- #define CPLOAD(register)
- #endif
- /*
- * 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:
- /*
- * ABS - export absolute symbol
- */
- #define ABS(symbol,value) \
- .globl symbol; \
- symbol = value
- #define PANIC(msg) \
- .set push; \
- .set reorder; \
- PTR_LA a0, 8f; \
- jal panic; \
- 9: b 9b; \
- .set pop; \
- TEXT(msg)
- /*
- * Print formatted string
- */
- #ifdef CONFIG_PRINTK
- #define PRINT(string) \
- .set push; \
- .set reorder; \
- PTR_LA a0, 8f; \
- jal printk; \
- .set pop; \
- TEXT(string)
- #else
- #define PRINT(string)
- #endif
- #define TEXT(msg) \
- .pushsection .data; \
- 8: .asciiz msg; \
- .popsection;
- /*
- * Build text tables
- */
- #define TTABLE(string) \
- .pushsection .text; \
- .word 1f; \
- .popsection \
- .pushsection .data; \
- 1: .asciiz string; \
- .popsection
- /*
- * MIPS IV pref instruction.
- * Use with .set noreorder only!
- *
- * MIPS IV implementations are free to treat this as a nop. The R5000
- * is one of them. So we should have an option not to use this instruction.
- */
- #ifdef CONFIG_CPU_HAS_PREFETCH
- #define PREF(hint,addr) \
- .set push; \
- .set mips4; \
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