1 /* Copyright (C) 1997, 1998, 2002, 2003 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 Contributed by Ralf Baechle <ralf@gnu.org>. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <http://www.gnu.org/licenses/>. */ 18 19 #ifndef _SYS_REGDEF_H 20 #define _SYS_REGDEF_H 21 22 #include <sgidefs.h> 23 24 /* 25 * Symbolic register names for 32 bit ABI 26 */ 27 #define zero $0 /* wired zero */ 28 #define AT $1 /* assembler temp - uppercase because of ".set at" */ 29 #define v0 $2 /* return value */ 30 #define v1 $3 31 #define a0 $4 /* argument registers */ 32 #define a1 $5 33 #define a2 $6 34 #define a3 $7 35 #if _MIPS_SIM != _MIPS_SIM_ABI32 36 #define a4 $8 37 #define a5 $9 38 #define a6 $10 39 #define a7 $11 40 #define t0 $12 41 #define t1 $13 42 #define t2 $14 43 #define t3 $15 44 #define ta0 a4 45 #define ta1 a5 46 #define ta2 a6 47 #define ta3 a7 48 #else /* if _MIPS_SIM == _MIPS_SIM_ABI32 */ 49 #define t0 $8 /* caller saved */ 50 #define t1 $9 51 #define t2 $10 52 #define t3 $11 53 #define t4 $12 54 #define t5 $13 55 #define t6 $14 56 #define t7 $15 57 #define ta0 t4 58 #define ta1 t5 59 #define ta2 t6 60 #define ta3 t7 61 #endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */ 62 #define s0 $16 /* callee saved */ 63 #define s1 $17 64 #define s2 $18 65 #define s3 $19 66 #define s4 $20 67 #define s5 $21 68 #define s6 $22 69 #define s7 $23 70 #define t8 $24 /* caller saved */ 71 #define t9 $25 72 #define jp $25 /* PIC jump register */ 73 #define k0 $26 /* kernel scratch */ 74 #define k1 $27 75 #define gp $28 /* global pointer */ 76 #define sp $29 /* stack pointer */ 77 #define fp $30 /* frame pointer */ 78 #define s8 $30 /* same like fp! */ 79 #define ra $31 /* return address */ 80 81 #endif /* _SYS_REGDEF_H */ 82