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kernel add
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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) 1985 MIPS Computer Systems, Inc.
* Copyright (C) 1994, 95, 99, 2003 by Ralf Baechle
* Copyright (C) 1990 - 1992, 1999 Silicon Graphics, Inc.
* Copyright (C) 2011 Wind River Systems,
* written by Ralf Baechle <ralf@linux-mips.org>
*/
#ifndef _ASM_REGDEF_H
#define _ASM_REGDEF_H
#include <asm/sgidefs.h>
#if _MIPS_SIM == _MIPS_SIM_ABI32
/*
* Symbolic register names for 32 bit ABI
*/
#define zero $0 /* wired zero */
#define AT $1 /* assembler temp - uppercase because of ".set at" */
#define v0 $2 /* return value */
#define v1 $3
#define a0 $4 /* argument registers */
#define a1 $5
#define a2 $6
#define a3 $7
#define t0 $8 /* caller saved */
#define t1 $9
#define t2 $10
#define t3 $11
#define t4 $12
#define ta0 $12
#define t5 $13
#define ta1 $13
#define t6 $14
#define ta2 $14
#define t7 $15
#define ta3 $15
#define s0 $16 /* callee saved */
#define s1 $17
#define s2 $18
#define s3 $19
#define s4 $20
#define s5 $21
#define s6 $22
#define s7 $23
#define t8 $24 /* caller saved */
#define t9 $25
#define jp $25 /* PIC jump register */
#define k0 $26 /* kernel scratch */
#define k1 $27
#define gp $28 /* global pointer */
#define sp $29 /* stack pointer */
#define fp $30 /* frame pointer */
#define s8 $30 /* same like fp! */
#define ra $31 /* return address */
#endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
#if _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32
#define zero $0 /* wired zero */
#define AT $at /* assembler temp - uppercase because of ".set at" */
#define v0 $2 /* return value - caller saved */
#define v1 $3
#define a0 $4 /* argument registers */
#define a1 $5
#define a2 $6
#define a3 $7
#define a4 $8 /* arg reg 64 bit; caller saved in 32 bit */
#define ta0 $8
#define a5 $9
#define ta1 $9
#define a6 $10
#define ta2 $10
#define a7 $11
#define ta3 $11
#define t0 $12 /* caller saved */
#define t1 $13
#define t2 $14
#define t3 $15
#define s0 $16 /* callee saved */
#define s1 $17
#define s2 $18
#define s3 $19
#define s4 $20
#define s5 $21
#define s6 $22
#define s7 $23
#define t8 $24 /* caller saved */
#define t9 $25 /* callee address for PIC/temp */
#define jp $25 /* PIC jump register */
#define k0 $26 /* kernel temporary */
#define k1 $27
#define gp $28 /* global pointer - caller saved for PIC */
#define sp $29 /* stack pointer */
#define fp $30 /* frame pointer */
#define s8 $30 /* callee saved */
#define ra $31 /* return address */
#endif /* _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32 */
#endif /* _ASM_REGDEF_H */
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