1 // Copyright 2000-2005 the Contributors, as shown in the revision logs.
2 // Licensed under the Apache Public Source License 2.0 ("the License").
3 // You may not use this file except in compliance with the License.
5 package org.ibex.nestedvm;
9 public final static int ZERO = 0; // Immutable, hardwired to 0
10 public final static int AT = 1; // Reserved for assembler
11 public final static int K0 = 26; // Reserved for kernel
12 public final static int K1 = 27; // Reserved for kernel
13 public final static int GP = 28; // Global pointer (the middle of .sdata/.sbss)
14 public final static int SP = 29; // Stack pointer
15 public final static int FP = 30; // Frame Pointer
16 public final static int RA = 31; // Return Address
18 // Return values (caller saved)
19 public final static int V0 = 2;
20 public final static int V1 = 3;
21 // Argument Registers (caller saved)
22 public final static int A0 = 4;
23 public final static int A1 = 5;
24 public final static int A2 = 6;
25 public final static int A3 = 7;
26 // Temporaries (caller saved)
27 public final static int T0 = 8;
28 public final static int T1 = 9;
29 public final static int T2 = 10;
30 public final static int T3 = 11;
31 public final static int T4 = 12;
32 public final static int T5 = 13;
33 public final static int T6 = 14;
34 public final static int T7 = 15;
35 public final static int T8 = 24;
36 public final static int T9 = 25;
37 // Saved (callee saved)
38 public final static int S0 = 16;
39 public final static int S1 = 17;
40 public final static int S2 = 18;
41 public final static int S3 = 19;
42 public final static int S4 = 20;
43 public final static int S5 = 21;
44 public final static int S6 = 22;
45 public final static int S7 = 23;