PS2SDK
PS2 Homebrew Libraries
as_reg_compat.h
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1 /*
2 # _____ ___ ____ ___ ____
3 # ____| | ____| | | |____|
4 # | ___| |____ ___| ____| | \ PS2DEV Open Source Project.
5 #-----------------------------------------------------------------------
6 # Copyright 2001-2004, ps2dev - http://www.ps2dev.org
7 # Licenced under Academic Free License version 2.0
8 # Review ps2sdk README & LICENSE files for further details.
9 */
10 
16 #ifndef __AS_REG_COMPAT_H__
17 #define __AS_REG_COMPAT_H__
18 
19 #ifdef _IOP
20 #define ABI_EABI64
21 #endif
22 
23 #if !defined(ABI_EABI64) && !defined(ABI_N32)
24 // No ABI defined
25 #error "Must define ABI_EABI64 or ABI_N32"
26 #endif
27 
28 #if defined(ABI_EABI64) && defined(ABI_N32)
29 // Both ABI's defined
30 #error "Must define ABI_EABI64 or ABI_N32"
31 #endif
32 
33 #define zero 0 // Hardware zero
34 #define at 1 // Assembler temporary Caller-saved
35 #define v0 2 // Function results Caller-saved
36 #define v1 3 // Function results Caller-saved
37 #define a0 4 // Subprogram arguments Caller-saved
38 #define a1 5 // Subprogram arguments Caller-saved
39 #define a2 6 // Subprogram arguments Caller-saved
40 #define a3 7 // Subprogram arguments Caller-saved
41 
42 #ifdef ABI_EABI64
43 #define a4 INVALID_REG
44 #define a5 INVALID_REG
45 #define a6 INVALID_REG
46 #define a7 INVALID_REG
47 #define t0 8 // Temporaries Caller-saved <- watch out!
48 #define t1 9 // Temporaries Caller-saved <- watch out!
49 #define t2 10 // Temporaries Caller-saved <- watch out!
50 #define t3 11 // Temporaries Caller-saved <- watch out!
51 #define t4 12 // Temporaries Caller-saved
52 #define t5 13 // Temporaries Caller-saved
53 #define t6 14 // Temporaries Caller-saved
54 #define t7 15 // Temporaries Caller-saved
55 #endif
56 
57 #ifdef ABI_N32
58 #define a4 8 // Subprogram arguments Caller-saved
59 #define a5 9 // Subprogram arguments Caller-saved
60 #define a6 10 // Subprogram arguments Caller-saved
61 #define a7 11 // Subprogram arguments Caller-saved
62 #define t0 12 // Temporaries Caller-saved <- watch out!
63 #define t1 13 // Temporaries Caller-saved <- watch out!
64 #define t2 14 // Temporaries Caller-saved <- watch out!
65 #define t3 15 // Temporaries Caller-saved <- watch out!
66 #define t4 INVALID_REG
67 #define t5 INVALID_REG
68 #define t6 INVALID_REG
69 #define t7 INVALID_REG
70 #endif
71 
72 #define s0 16 // Saved Callee-saved
73 #define s1 17 // Saved Callee-saved
74 #define s2 18 // Saved Callee-saved
75 #define s3 19 // Saved Callee-saved
76 #define s4 20 // Saved Callee-saved
77 #define s5 21 // Saved Callee-saved
78 #define s6 22 // Saved Callee-saved
79 #define s7 23 // Saved Callee-saved
80 #define t8 24 // Temporary Caller-saved
81 #define t9 25 // Temporary Caller-saved
82 #define k0 26 // Reserved for kernel
83 #define k1 27 // Reserved for kernel
84 #define gp 28 // Global pointer Callee-saved
85 #define sp 29 // Stack pointer Callee-saved
86 #define fp 30 // Frame pointer Callee-saved
87 #define ra 31 // Return address Caller-saved
88 
89 #endif /* __AS_REG_COMPAT_H__ */