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/*-
* Copyright (c) 2001, Juniper Networks, Inc.
* All rights reserved.
* Truman Joe, February 2001.
*
* regdef.h -- MIPS register definitions.
*
* JNPR: regdef.h,v 1.3 2006/08/07 05:38:57 katta
* $FreeBSD$
*/
#ifndef _MACHINE_REGDEF_H_
#define _MACHINE_REGDEF_H_
#include <machine/cdefs.h> /* For API selection */
#if defined(__ASSEMBLER__)
/* General purpose CPU register names */
#define zero $0 /* wired zero */
#define AT $at /* assembler temp */
#define v0 $2 /* return value */
#define v1 $3
#define a0 $4 /* argument registers */
#define a1 $5
#define a2 $6
#define a3 $7
#if defined(__mips_n32) || defined(__mips_n64)
#define a4 $8
#define a5 $9
#define a6 $10
#define a7 $11
#define t0 $12 /* Temp regs, not saved accross subroutine calls */
#define t1 $13
#define t2 $14
#define t3 $15
#else
#define t0 $8 /* caller saved */
#define t1 $9
#define t2 $10
#define t3 $11
#define t4 $12 /* caller saved - 32 bit env arg reg 64 bit */
#define t5 $13
#define t6 $14
#define t7 $15
#endif
#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 /* code generator */
#define t9 $25
#define k0 $26 /* kernel temporary */
#define k1 $27
#define gp $28 /* global pointer */
#define sp $29 /* stack pointer */
#define fp $30 /* frame pointer */
#define s8 $30 /* callee saved */
#define ra $31 /* return address */
/*
* These are temp registers whose names can be used in either the old
* or new ABI, although they map to different physical registers. In
* the old ABI, they map to t4-t7, and in the new ABI, they map to a4-a7.
*
* Because they overlap with the last 4 arg regs in the new ABI, ta0-ta3
* should be used only when we need more than t0-t3.
*/
#if defined(__mips_n32) || defined(__mips_n64)
#define ta0 $8
#define ta1 $9
#define ta2 $10
#define ta3 $11
#else
#define ta0 $12
#define ta1 $13
#define ta2 $14
#define ta3 $15
#endif /* __mips_n32 || __mips_n64 */
#endif /* __ASSEMBLER__ */
#endif /* !_MACHINE_REGDEF_H_ */
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