1 | /*****************************************************************************/ |
2 | /* */ |
3 | /* cpu.c */ |
4 | /* */ |
5 | /* CPU specifications */ |
6 | /* */ |
7 | /* */ |
8 | /* */ |
9 | /* (C) 2003-2011, Ullrich von Bassewitz */ |
10 | /* Roemerstrasse 52 */ |
11 | /* D-70794 Filderstadt */ |
12 | /* EMail: uz@cc65.org */ |
13 | /* */ |
14 | /* */ |
15 | /* This software is provided 'as-is', without any expressed or implied */ |
16 | /* warranty. In no event will the authors be held liable for any damages */ |
17 | /* arising from the use of this software. */ |
18 | /* */ |
19 | /* Permission is granted to anyone to use this software for any purpose, */ |
20 | /* including commercial applications, and to alter it and redistribute it */ |
21 | /* freely, subject to the following restrictions: */ |
22 | /* */ |
23 | /* 1. The origin of this software must not be misrepresented; you must not */ |
24 | /* claim that you wrote the original software. If you use this software */ |
25 | /* in a product, an acknowledgment in the product documentation would be */ |
26 | /* appreciated but is not required. */ |
27 | /* 2. Altered source versions must be plainly marked as such, and must not */ |
28 | /* be misrepresented as being the original software. */ |
29 | /* 3. This notice may not be removed or altered from any source */ |
30 | /* distribution. */ |
31 | /* */ |
32 | /*****************************************************************************/ |
33 | |
34 | |
35 | |
36 | /* common */ |
37 | #include "addrsize.h" |
38 | #include "check.h" |
39 | #include "cpu.h" |
40 | #include "strutil.h" |
41 | |
42 | |
43 | |
44 | /*****************************************************************************/ |
45 | /* Data */ |
46 | /*****************************************************************************/ |
47 | |
48 | |
49 | |
50 | /* CPU used */ |
51 | cpu_t CPU = CPU_UNKNOWN; |
52 | |
53 | /* Table with target names */ |
54 | const char* CPUNames[CPU_COUNT] = { |
55 | "none" , |
56 | "6502" , |
57 | "6502X" , |
58 | "65SC02" , |
59 | "65C02" , |
60 | "65816" , |
61 | "sweet16" , |
62 | "huc6280" , |
63 | "m740" , |
64 | "4510" , |
65 | }; |
66 | |
67 | /* Tables with CPU instruction sets */ |
68 | const unsigned CPUIsets[CPU_COUNT] = { |
69 | CPU_ISET_NONE, |
70 | CPU_ISET_6502, |
71 | CPU_ISET_6502 | CPU_ISET_6502X, |
72 | CPU_ISET_6502 | CPU_ISET_65SC02, |
73 | CPU_ISET_6502 | CPU_ISET_65SC02 | CPU_ISET_65C02, |
74 | CPU_ISET_6502 | CPU_ISET_65SC02 | CPU_ISET_65C02 | CPU_ISET_65816, |
75 | CPU_ISET_SWEET16, |
76 | CPU_ISET_6502 | CPU_ISET_65SC02 | CPU_ISET_65C02 | CPU_ISET_HUC6280, |
77 | CPU_ISET_6502 | CPU_ISET_M740, |
78 | CPU_ISET_6502 | CPU_ISET_65SC02 | CPU_ISET_65C02 | CPU_ISET_4510, |
79 | }; |
80 | |
81 | |
82 | |
83 | /*****************************************************************************/ |
84 | /* Code */ |
85 | /*****************************************************************************/ |
86 | |
87 | |
88 | |
89 | int ValidAddrSizeForCPU (unsigned char AddrSize) |
90 | /* Check if the given address size is valid for the current CPU */ |
91 | { |
92 | switch (AddrSize) { |
93 | case ADDR_SIZE_DEFAULT: |
94 | /* Always supported */ |
95 | return 1; |
96 | |
97 | case ADDR_SIZE_ZP: |
98 | /* Not supported by None and Sweet16 */ |
99 | return (CPU != CPU_NONE && CPU != CPU_SWEET16); |
100 | |
101 | case ADDR_SIZE_ABS: |
102 | /* Not supported by None */ |
103 | return (CPU != CPU_NONE); |
104 | |
105 | case ADDR_SIZE_FAR: |
106 | /* Only supported by 65816 */ |
107 | return (CPU == CPU_65816); |
108 | |
109 | case ADDR_SIZE_LONG: |
110 | /* Not supported by any CPU */ |
111 | return 0; |
112 | |
113 | default: |
114 | FAIL ("Invalid address size" ); |
115 | /* NOTREACHED */ |
116 | return 0; |
117 | } |
118 | } |
119 | |
120 | |
121 | |
122 | cpu_t FindCPU (const char* Name) |
123 | /* Find a CPU by name and return the target id. CPU_UNKNOWN is returned if |
124 | ** the given name is no valid target. |
125 | */ |
126 | { |
127 | unsigned I; |
128 | |
129 | /* Check all CPU names */ |
130 | for (I = 0; I < CPU_COUNT; ++I) { |
131 | if (StrCaseCmp (CPUNames [I], Name) == 0) { |
132 | return (cpu_t)I; |
133 | } |
134 | } |
135 | |
136 | /* Not found */ |
137 | return CPU_UNKNOWN; |
138 | } |
139 | |